GOST 30090-93

INTERSTATE STANDARD

BAGS AND BAGGING FABRICS

GENERAL TECHNICAL CONDITIONS

INTERSTATE COUNCIL
ON STANDARDIZATION, METROLOGY AND CERTIFICATION

Minsk

Preface

1. DEVELOPED by the Russian Federation - Technical Committee for Standardization TC 338 “Light Industry Products”

INTRODUCED by the Technical Secretariat of the Interstate Council for Standardization, Metrology and Certification

2. ADOPTED by the Interstate Council for Standardization, Metrology and Certification (report of the technical secretariat No. 3 dated 04/15/94)

3. By Decree of the Committee of the Russian Federation on Standardization, Metrology and Certification dated 08.08.94 No. 207, the interstate standard GOST 30090-93 was put into effect directly as a state standard of the Russian Federation on January 1, 1995.

4. INSTEAD OF GOST 8516-78, GOST 18225-72, GOST 19298-73, GOST 19317-73

5. Reissue. February 1997

GOST 30090-93

INTERSTATE STANDARD

Date of introduction 1995-01-01

1. AREA OF APPLICATION

This standard applies to grocery bags and bags for technical purposes, as well as to the fabrics used for their manufacture.

Mandatory requirements for the quality of bags are the breaking load of the fabric strip, the breaking load of the bag seam, the mass fraction of fire and the mass fraction of pile (see table).

Bags used for packaging dangerous goods must comply with the requirements of GOST 26319.

2. REGULATORY REFERENCES

This standard uses references to the following standards:

3.3.1. The use of chemical fibers, yarns and threads not listed in the table for food bags must be approved by the National Sanitary and Epidemiological Supervision Authority for contact with food.

(Changed edition, Amendment No. 1).

3.4. Bag fabrics are produced in the form of fabric with a width of 106; 111; 114.5; 94.5 cm or sleeves 50, 56, 58 cm wide.

Bags are produced in the sizes indicated in the table.

Table 1

	Type of raw materials used
Grocery bags (for packaging flour, cereals, grain, sugar and other food products) and bag fabrics for them;	Yarn from bast fibers: flax, jute, kenaf, hemp and a mixture of these fibers in various combinations;
technical bags (for packaging ore, seeds and other products) and bag fabrics for them	yarn from bast fibers mixed with chemical fibers: viscose, copper-ammonia, polyester, polyamide;
	chemical threads: viscose, polyester, polyamide, polypropylene;
	cotton yarn

Table 2

	Bag size, cm

Grocery bags


Technical bags

By agreement between the manufacturer and the consumer, bags can be produced in other sizes and designs, and bag fabrics can be produced in other widths.

(Changed edition, Amendment No. 1).

3.5. Permissible minimum deviations in physical and mechanical parameters should not exceed:

according to the width of the fabric (sleeves):

up to 100 cm........................................................ ....... - 1 cm;

St. 100 cm................................................... ...... - 2 cm;

according to bag size:

in width........................................................ .... - 1 cm;

length................................................... ....... - 3 cm;

by surface density

fabrics........................................................ ............ - 7%

by weight of 1 bag................................................... . - 7%;

number of threads per 10 cm

fabrics:

based on................................................... ............ - 2%;

for duck............................................. ................ - 3% .

Note - Plus tolerances for the listed indicators are not limited.

(Changed edition, Amendment No. 1).

3.6. In the designation of bags and fabrics when ordering, indicate for bags: purpose of the bag and type of raw material, strength group, bag size, designation of the standard for fabrics: type of raw material, strength group, width, designation of the standard.

For example:

linen grocery bag, ordinary, 53´ 104 cm, GOST 30090-93;

technical bag made of chemical threads, increased strength 46´ 65 cm, GOST 30090-93;

jute bag fabric, ordinary, width 112 cm, GOST 30090-93.

4. GENERAL TECHNICAL REQUIREMENTS

4.1. Characteristics

4.1.1. Bags are made from bag fabrics produced from bast yarn, from bast yarn mixed with chemical fibers in accordance with GOST 10078, as well as in combination with other types of yarn and threads produced according to regulatory and technical documentation.

4.1.2. Bag fabrics and sacks are produced in the following types: ordinary, high-strength, with a compacted edge.

Bags and bag fabrics with a sealed edge must have one colored lining with a width of (20 ± 2) mm. The width of the sealed edge must be at least 25 mm.

Bags and bag fabrics of increased strength must have two colored interlinings with a width of (15 ± 2) mm with a distance of 50 mm between them.

4.1.3. Fabrics for bags, depending on their purpose, must be cut and calendered.

Fabrics for bags made from chemical film threads can be laminated with melt polypropylene or polyethylene.

(Changed edition, Amendment No. 1).

4.1.4. In terms of physical and mechanical indicators, bags and bag fabrics must comply with the standards specified in the table.

4.1.5. The humidity of bags and bag fabrics should be no more than 14%.

For bags and bag fabrics made of polypropylene threads, humidity is not specified.

4.1.6. Grocery bags should not have any foreign odor or emit harmful substances that change the properties and quality of products.

4.1.7. The content of metal dust in grocery bags should not exceed 3 mg per bag. Metal impurities of needle-shaped, plate-shaped and coarse shapes are not allowed.

4.1.8. Bags are sewn from one piece of fabric, sewing one side and the bottom or two sides into one whole, and hemming the neck of the bag if there is no edge in it.

It is allowed to sew bags from two pieces of fabric, observing the same direction of the warp threads in them. The number of such bags from the total number of bags in the batch should be no more than 5%.

When making bags from fabric produced on a circular loom, the bag is sewn from one piece of fabric, the bottom is sewn together and the neck is hemmed.

(Changed edition, Amendment No. 1).

4.1.8.1. By agreement with the consumer, bags can be produced with a closed (with valve) neck. The valve is formed in one of the upper corners of the bag by folding the corner of the bag inside. The neck of the bag is then sewn up with a closed hem stitch.

The valve size is determined by agreement with the consumer.

Figure 1a

(Introduced additionally, Amendment No. 1).

Table 3

Breaking load of strips of fabric, size 50´ 200 mm at warp and weft, for fabrics and bags

Mass fraction of fire, %, no more

Mass fraction of lint, %, no more

Complete change in linear dimensions, %, no more (except for bags made of chemical film threads)

ordinary

increased strength

with sealed edge

after thermal and humidity treatment

after washing

ordinary

increased strength

with sealed edge

lateral

Grocery bags:

from linen and mixed linen yarn;

the same, in combination with chemical threads, with cotton yarn;

from chemical threads.

Bags, technical:

from yarn made from jute, kenaf, hemp and short flax fibers or mixtures thereof;

the same, in combination with chemical threads;

from chemical threads

Notes - 1. The indicators “mass fraction of lint, %, no more” and “complete shrinkage of bags, %, no more after washing” are determined for grocery bags intended for packaging sugar.”

2. Linen blended yarn includes yarn with a flax fiber content of at least 30%.

(Changed edition, Amendment No. 1).

4.1.9. Sewing the sides and bottom of the bag is carried out with one or two of seven types of seams:

1 - single-line hem with a closed cut (Figure);

2 - one-line overcasting with a closed cut (Figure);

3 - single-line overcasting with an open cut (Figure);

4 - hem with a closed cut, single-line overcasting with the fabric folded outside the bag (Figure);

5 - single-line hem with an open cut, with the fabric folded to the outside of the bag (Figure);

6 - single-line hem along the edge (Figure);

7 - single-line hem with an open cut, folding the fabric inside the bag (Figure).

Notes

1. All types of seams, if they have an edge, are made without bending the fabric.

2. When sewing the sides and bottoms of grocery bags, seams are not allowed without folding the cut edges of the fabric or without overcasting them.

Figure 9

4.1.10. Hemming the cut edge of the fabric at the neck of the bag is carried out using a single-line hem stitch with a closed cut (Figure ) or a single-line overlock stitch with an open cut (Figure ).

In bags sewn from fabrics made from chemical film threads, with the cut edge of the fabric melted, the neck is hemmed with a single-line hem seam along the edge. It is allowed not to hem the neck with a melted cut edge, provided that the strength of the cut of the bag and the safety of the product are ensured.

(Changed edition, Amendment No. 1).

4.1.11. Sewing grocery bags

When sewing grocery bags with seam types 1 and 6 (figure and), the width of the side seam should be (15 ± 5) mm, the bottom seam should be (20 ± 5) mm. The stitching should be done no further than 3 mm from the center of the seam in any direction.

The width of the side seam when sewing with an overlock stitch of types 2 and 3 (figures and) should be (10 ± 2) mm. In bags made of fabrics produced on pneumatic rapier machines of the ATPR type, the seam width is (12 ± 2) mm.

When sewing the bottom of the bag with seams of types 4 and 5, the edge of the fabric is folded outside the bag to a width of (15 ± 2) mm and overcast with an overcast seam, and then the bottom of the bag is sewn with an overlock stitch with a width of (10 ± 2) mm.

The neck of the bags is hemmed with a type 8 seam (Figure) or a type 9 seam (Figure). Seam width (10 ± 2) mm.

4.1.12. Sewing technical bags

Sewing the sides and bottom is done using seam types 2, 3 and 7 (figures , , ), seam width (12 ± 2) mm. When sewing a bag with a type 7 seam, the fabric is folded into the bag to a width of no more than 25 mm.

If there is no edge in the neck of the bag, the neck is hemmed using seams of type 7 or 8 (figures and), seam width (12 ± 5) mm.

When sewing bags from fabric made from chemical film threads, the side seam along the edge or fused edge is made without bending the fabric, the bottom seam is made with the fabric folded to a width of (20 ± 10) mm.

(Changed edition, Amendment No. 1).

4.1.13. Bags are sewn using polyester, polyamide, viscose and other types of threads produced in accordance with regulatory and technical documentation, ensuring that the requirements for the breaking load of the seam and the quality of sewing are maintained.

4.1.14. All threads of the seams must be secured, the fastening braid and the free ends of the threads should not be more than 5 cm long.

4.1.15. The number of stitches per 10 cm of seam must correspond to that indicated in the table.

4.1.16. Determination of grade of bags and bag fabrics

For bags and bag fabrics, two grades are established: first and second.

Table 4

		Number of stitches per 10 cm, not less
Grocery bags:
side seam

	Closed or open hem single-line overcasting
bottom seam	Closed hem single line
	Single-line hem along the edge
	Hem with open or closed cut, single-line overcasting (for overcasting and sewing)
neck hemming	Closed hem single line
neck hemming
Technical bags:
side and bottom seams	Single-line hem with open cut
neck hemming	Closed hem single line
neck hemming	Single-line hem with open cut

(Changed edition, Amendment No. 1).

The grade of bag fabrics and bags is determined by physical and mechanical parameters, the number of defects in appearance, and the quality of sewing of the bag.

The grade is determined based on the worst indicator. Examples of variety definitions are provided in the appendix. Terms of defects in the appearance of bag tissues and their explanations are indicated in the appendix.

4.1.16.1. Permissible deviations for bag fabrics and bags of the second grade in terms of physical and mechanical indicators are established from the minimum standards for the first grade established in the technical documentation; and they should not exceed the values specified in the table.

Table 5


Fabric width, cm
Bag size:
length and width, cm
Surface density of fabric, %
Weight of 1 bag,%
Number of threads per 10 cm for warp and weft	Not allowed

4.1.16.2. The total number of defects in appearance allowed with restrictions in bag fabrics and bags of the first and second grades should not be more than indicated in the table.

Table 6

The name and size of appearance defects allowed with restrictions are indicated in the table.

4.1.16.3. Defects in appearance exceeding the size indicated for the second grade in the table are not allowed in bag fabrics and bags.

In pieces of bag fabrics, unacceptable defects in appearance are subject to cutting out or, as agreed by the parties, a conditional cut. The number of cuts per conventional piece length should be no more than 3. The minimum cut length should be at least 1.3 m.

Table 7

	Dimensions and number of appearance defects allowed with restrictions, accepted as one defect
	Grocery bags and fabrics for them		Technical bags and fabrics for them
	first grade	second grade	first grade	second grade
Local damage with destruction of warp and weft threads, woven area, cm -2	Not allowed
Missing threads (twins, spans) one thread total length, cm	No more than 20		One up to 10 cm long	One up to 20 cm long or two 10 cm long each
Missing two or more threads (twins, spans)	Not allowed		Not allowed
Dives total length, cm	No more than 20
Undercuts with a decrease in weft density by no more than one thread per 1 cm	1 per bag	1 per bag	1 per bag	2 per bag
Couples and cuts that decompress the fabric	No more than 1 thread thick
Rashes and local thickenings	Three to five times the thickness of a single thread
Tear off the base without compromising the integrity of the fabric
Darning area, cm -2			Machine darning is allowed, which does not cause product spillage
Oil stains, dirt	Not allowed		Not allowed	1 spot per bag
Notes 1. The quality of the darning must meet the requirements for the quality of the fabric. 2. Fringe along the edges in fabrics produced on ATPR type machines and in bags sewn from these fabrics is not considered a defect

(Changed edition, Amendment No. 1).

4.1.16.4. The grade of bags based on the quality of tailoring is determined in accordance with the requirements of the table.

Table 8

		Bag type

Lack of stitches	Side and bottom	Not allowed	No more than 1 per 10 cm
Lack of stitches	Hemming the neck	No more than 1 per 10 cm	No more than 2 by 10 cm
Skipping stitches	Side and bottom	No more than 1	2 - 3 in different places
Skipping stitches	Hemming the neck	No more than 2 in one place	No more than 2 in two places

4.1.16.5. In bags, a pronounced seam tie, an oval seam, skipping or lack of stitches more than the norms indicated in the table for the second grade are not allowed.

4.1.16.6. If a seam is oval, stitches are skipped, or a pocket is formed, it is allowed to correct the defects in the form of additional stitching along the defective area, and a new seam should be started no closer than 3 cm to the beginning of the defective area and finished at the same distance from its end. The corrected area is not considered a defect.

4.1.17. Bags made of fabric made from chemical film threads must withstand at least 3 impacts during free fall:

from a height of 1.2 m to the bottom of the bag;

from a height of 1.6 m flat on each side.

After each fall there should be no rupture of the bag or loss of contents. A small leak at the sewing point of the bag is not considered a defect in the bag, provided that no further spillage of product occurs when the bag is lifted.

4.1.18. By agreement with the consumer, inscriptions and drawings can be applied to the bag.

Samples of inscriptions and drawings - as agreed with the consumer. Approval of standard samples is allowed.

The inscription should be clear, even, and easy to read.

Contamination or stains from printing ink that make it difficult to read the inscription and distort the design are not allowed.

4.1.17, 4.1.18(Introduced additionally, Change No. 1).

4.2. Marking

4.2.1. Marking of bag fabrics according to GOST 30084.

4.2.2. Marking of bags.

4.2.2.1. A label indicating the data characterizing the product is placed in the top pack of the bale:

names of the manufacturer and its trademark;

product names;

bag article number (if available);

bag size;

varieties;

number of bags in a bale;

dates of manufacture;

designations of this standard and technical documentation.

4.2.2.2. Transport marking of the bale must be applied in accordance with the requirements of GOST 14192. The bale card or label attached to the bale indicates:

name of the manufacturer and its trademark;

product name;

bale number;

bag article (if available);

variety;

number of bags in a bale;

gross weight;

date of manufacture.

4.2.2.1, 4.2.2.2 (Changed edition, Amendment No. 1).

4.3. Package

4.3.1. Folding and primary packaging of bag fabrics - according to GOST 12453.

4.3.2. The bags are packed in packs of 10 pieces. Packs are packed in bales weighing no more than 50 kg.

Packing bags of different purposes, sizes and grades into piles is not permitted.

Bags made from two pieces of fabric are packaged separately.

4.3.3. Bales of bags are lined on all sides with packaging fabric in accordance with GOST 5530 or other types of packaging materials and tied with rope in accordance with GOST 1868 or other binding materials. All types of packaging and binding materials used must ensure the safety of packaged products.

By agreement with the consumer, it is allowed not to line the bales with packaging material and to increase the weight of the bales when loading and unloading operations are mechanized.

4.3.4. It is allowed, by agreement with the consumer, to use other methods of packing bags to ensure the safety of products.

(Introduced additionally, Amendment No. 1).

5. ACCEPTANCE RULES

5.1. Sacks and bag fabrics are presented for acceptance in batches. A batch is considered to be any quantity of products of the same article and type, documented in one quality document.

5.2. Rules for acceptance of bag fabrics according to GOST 20566, GOST 29104.0.

(Changed edition, Amendment No. 1).

It is allowed to test bags made of chemical film threads without first keeping them in climatic conditions in accordance with GOST 10681.

6.3. Determination of linear dimensions and surface density of bag fabric - according to GOST 3811, GOST 29104.1.

6.4. Determination of the number of threads per 10 cm of fabric - according to GOST 3812, GOST 29104.3.

6.1. - 6.4. (Changed edition, Amendment No. 1).

The arithmetic mean of the results of all weighings with an error of ± 1 g is taken as the test result.

6.7. To count the number of stitches per 10 cm of seam and measure the width of the seam, five bags are selected from a sample selected by . Counting is carried out on each bag in three places: two counts in the side and hem seams and one each in the bottom and overcast seams. Count the whole number of stitches per 10 cm of seam.

The arithmetic mean of the results of all measurements is taken as the final result.

6.8. Determination of the breaking load of bag fabrics and bag seams - according to GOST 3813, GOST 29104.4.

To control the tensile load of the fabric and seams, five bags are selected. The size of the sample to determine the breaking load of the seam is indicated in the Appendix.

The distance between the clamps of the tensile testing machine is set to 200 mm. The lowering speed of the lower clamp should ensure the duration of stretching of the sample until it breaks is 15 - 45 s.

The breaking load of a seam is recorded at the moment of rupture of sewing threads or fabric.

The arithmetic mean of all measurements is taken as the test result. The calculation is carried out accurate to the first decimal place, followed by rounding to the nearest whole number.

6.6. - 6.8. (Changed edition, Amendment No. 1).

6.9. Determination of the mass fraction of fires

6.9.2. Each selected sample is weighed with an error of ± 0.01 g, and from each sample, a free and partially woven fire (with one end freely protruding) is selected from both sides using tweezers. The sample cleared from the fire is weighed again with an error of ± 0.01 g.

6.9.3. Mass fraction of firesK, %, calculated by the formula

(1)

Where m 1 - initial mass of the sample, g;

T 2 - mass of sample cleaned from fire, g.

The arithmetic mean of the results of all tests is taken as the final result. Counting is carried out to the second decimal place, followed by rounding to the first decimal place.

6.10. Determination of mass fraction of fire and mass fraction of lint

6.10.1. Sampling for testing - according to. One side of each obtained sample is marked.

6.10.2. When testing, the following devices, devices and instruments are used: an electric razor of the “Kharkov” type with floating knives, a metal comb with a frequency of needles of 10 by 10 mm and a needle diameter at the base of 0.5 mm, tweezers or a long needle, the base is a beam (wooden or metal ) size 150´ 150 mm with a metal hoop for securing samples, scales with a weighing error of ± 0.01 g.

6.10.3. Before testing, each sample is weighed with an error of no more than ± 0.01 g and secured in a hoop frame on a beam base.

A loose and partially woven cord (with one end freely protruding) is selected from the surface of the sample with tweezers.

To lift the crushed pile, the sample is “combed” from the marked side with a metal comb from one edge to the other vertically and horizontally (one movement in each direction). The lint remaining on the comb is collected.

Using an electric razor, the surface of the sample is processed in a spiral motion from the marked side parallel to all edges (Figure). The treatment is carried out in three stages lasting: 3, 2 and 1 min. After each stage of processing, the lint is selected from the tray of the electric razor using a brush, tweezers or a long needle, and after the third stage, the lint is collected from the knife block.

The free-falling lint, removed with a metal comb and an electric razor, is combined together and weighed on a scale with an error of ± 0.01 g.

The corners of the processed sample are marked on the frame with a colored pencil, removed from the frame and the processed part is cut out. The untreated part of the sample is weighed with an error of ±0.01 g.

The sample is turned over to the untreated side, the remaining fire is selected, added to the previously collected one and weighed with an error of ± 0.01 g.

6.10.4. The results of all weighings are recorded in a table in a form corresponding to the table.

Table 9

	Weight of sample measuring 17´ 17 cm	Total mass of fires, g	Total pile mass, g	Mass of the untreated part of the sample, g

Mass fraction of firesK, %, calculated by the formula

(2)

The result is calculated with an accuracy of 0.001 and rounded to 0.01%.

Mass fraction of lintB, %, calculated by the formula

(3)

The result is calculated with an accuracy of 0.01 and rounded to the nearest 0.1%.

6.11. Determination of metal impurities

To determine metal impurities, five bags are selected from those previously selected according to.

The selected bags are cleaned with a hair or nylon brush, first from the outside and then from the inside. The bags are cleaned over a sheet of paper with an area of at least 1 m2. Each side is cleaned twice.

After cleaning the bags, collect all the bag scraps with a magnet. Metal impurities collected by a magnet are weighed and the arithmetic mean of all weighings is determined.

6.12. Determination of the complete change in linear dimensions after thermal and humidity treatment and washing

6.12.1. Determination of the complete change in linear dimensions after thermal and moisture treatment is carried out on bags selected by.

Before and after treatment, the linear dimensions of the bags are measured according to.

The bags are processed in a pest control unit in accordance with the approved technological regime.

6.12.2. To determine the complete change in linear dimensions after washing, five bags are selected from the sample.

Before washing, measure the size of the bags according to.

Washing is carried out with clean water in drum-type washing machines with normal machine load at a temperature of +60 - 65 °C for 15 minutes.

It is allowed to wash bags in other types of washing machines while maintaining the washing mode.

After washing and spinning, the bags are straightened and hung to dry in a heat chamber or in air.

Dry bags are measured when the bag fabric is fully extended.

6.12.3. Changing linear dimensions along lengthY l and width Yb, %, are calculated using the formulas:

(4)

(5)

Where l 1 - average length of bags before processing, cm;

l 2 - average length of bags after processing, cm;

b 1 - average width of bags before processing, cm;

b 2 - average width of bags after processing, cm.

Complete change in linear dimensionsY, %, calculated by the formula

(6)

6.12, 6.12.1 - 6.12.3 (Changed edition, Amendment No. 1).

6.13. To determine the moisture content of the bags, one bag is taken from each bale selected by .

To determine the moisture content, the bag is dried in a conditioning apparatus at a temperature of 105 - 110 °C to constant weight.

Bag humidity W, %, calculated by the formula

(7)

Where m 1 - initial mass of the bag, g;

T 2 - the mass of the bag, dried to constant mass.

The arithmetic mean of the test results of all samples is taken as the final result.

6.14. Determination of defects in the appearance of bag fabrics is determined by viewing the fabric from the front side with reflected light on a rejecting table or rolling, which has an inclination to the vertical from 25° to 30°.

If disagreements arise, tissues are examined in natural light.

6.15. Determination of defects in the appearance and quality of tailoring of bags is carried out by viewing all bags selected by. The bags are viewed on a table under reflected light.

6.16. Determination of strength during free fall - according to GOST 17811.

To control the strength during dropping, 5 bags are selected from the sample selected according to.

(Introduced additionally, Amendment No. 1).

7. TRANSPORTATION AND STORAGE

7.1. Transportation and storage of bag fabrics and bags - in accordance with GOST 7000.

8. OPERATING INSTRUCTIONS

8.1. Unloading and storing empty bags.

8.1.1. Bales are unloaded from vehicles using loading and unloading mechanisms or through a conveyor system in combination with the necessary mechanisms and devices.

When unloading, bags should not be damaged.

8.1.2. Bales of bags must be placed in stable stacks.

Previously delivered batches should be used first.

8.2. Filling bags

8.2.1. Bags must be filled using special filling machines and devices. The degree of filling of the bag should not exceed 95% of its capacity.

8.2.3. Filled bags should be sewn using Class 38-A or equivalent sewing machines.

9. MANUFACTURER WARRANTY

The manufacturer guarantees the compliance of bags and bag fabrics with the requirements of this standard, subject to the conditions of their operation, storage and transportation.

The guaranteed shelf life of bags and bag fabrics is five years from the date of manufacture.

Appendix A

(required)

EXAMPLES OF DETERMINING THE GRADE OF BAGS

Example 1. Determination of the grade of bags by defects in appearance, allowed with restrictions, and by physical and mechanical indicators.

When examining 100 bags taken from the batch, it was found that 96 bags corresponded to the first grade in terms of the presence of defects, four bags corresponded to the second grade, and according to physical and mechanical indicators, all bags corresponded to the first grade. If the accompanying documents indicate the first grade of the lot, then a repeat sample is made, i.e. they look through double the number of bags - 200 bags.

Resampling result:

a) all bags correspond to the first grade, the entire batch is assessed as the first grade;

b) 193 bags correspond to the first grade, seven bags correspond to the second grade, the entire batch belongs to the second grade, because out of 200 bags, seven bags (more than 3%) are classified as second grade.

Example 2. Determining the grade of bags based on the quality of tailoring

When examining 100 bags taken from the batch, it was found that 50 bags had no sewing defects, 20 had one stitch missing on the hem line, and 30 had two stitches missing in one place, in the hem neck seam.

The entire batch is classified as first grade.

Example 3. Determining the grade of a batch of bags

After the final assessment, the bags were classified according to defects in appearance, which were allowed with restrictions to the second grade, according to physical and mechanical indicators - to the first grade, and according to the quality of tailoring - to the first grade.

The batch of bags belongs to the second grade.

Appendix B

(required)

TERMS OF DEFECTS OF APPEARANCE OF BAG TISSUE AND THEIR EXPLANATIONS

Table B1

	Explanation
Holes, punctures, holes, notches, knots that cause holes, folds, creases that tear the fabric	Local fabric defects with destruction of warp and weft threads
	Local fabric defect consisting in the absence of one or more warp threads
	Local fabric defect, consisting in the absence of one or more threads across the entire width of the fabric or in a limited area
Dives	Local defect in the form of one or more threads of one system incorrectly overlapping the threads of another system, disrupting the weave
Nedoseka	Local fabric defect in the form of a strip across the entire width of the fabric due to the reduced weft density of the fabric
Double, couple	Local defect in the form of two or more threads earned instead of one
Cutting	A common defect in the form of spread warp threads due to a violation of the density of the reed teeth
Thickening	Local defect in the form of thread thickening in a limited area
	Local defect in the form of irremovable traces of folds
Warp separation	Trace of elimination of tears of a large group of main threads
Knotting	Local defect in the form of incorrectly intertwined adjacent threads
	Woven loops of weft yarn on the surface of the fabric

Appendix B

DIAGRAM FOR CUTTING A BAG FOR TESTING

1 - sample for determining the breaking load of the bottom seam; 2 - sample to determine the breaking load of the side seam; 3 - a sample for determining the breaking load and the number of threads per 10 cm of fabric along the base; 4 - a sample for determining the breaking load and the number of threads per 10 cm of fabric along the weft; 5 - sample for determining the mass fraction of fire and the mass fraction of fluff

Figure 11

Figure 12

Samples 2, 3, 4, 5 are cut out from one and the other side of the bag.

Samples 3, 4 are stripped across the width by 50 mm.

Key words:bags, bag fabrics

(Changed edition, Amendment No. 1).

Appendix A (mandatory) Examples of determining the grade of bags Appendix B (mandatory). Terms of defects in the appearance of bag tissues and their explanations Appendix B (recommended). Scheme of cutting a bag for testing and cutting a sample to determine the breaking load of the seam

Interstate standard GOST 30090-93
"Sacks and bag fabrics. General technical conditions"
(put into effect by Decree of the Russian Federation Committee on Standardization, Metrology and Certification dated August 8, 1994 N 207)

With changes and additions from:

Sacks and fabric for bads. General specifications

Date of introduction: January 1, 1995
Instead of GOST 8516-78,
GOST 18225-72,
GOST 19298-73,
GOST 19317-73

Information about changes:

1. Scope of application

This standard applies to grocery bags and bags for technical purposes, as well as to the fabrics used for their manufacture.

Mandatory requirements for the quality of bags are the breaking load of the fabric strip, the breaking load of the bag seam, the mass fraction of fire and the mass fraction of pile (see Table 3).

Bags used for packaging dangerous goods must comply with the requirements of GOST 26319.

Information about changes:

GOST 1868-88 Technical and household ropes. Specifications

GOST 3811-72 Textile materials. Fabrics, non-woven fabrics and piece goods. Methods for determining linear dimensions, linear and surface densities

GOST 3812-72 Textile materials. Fabrics and piece goods. Methods for determining the density of threads and pile tufts

GOST 3813-72 Textile materials. Fabrics and piece goods. Methods for determining tensile tensile characteristics

GOST 5530-81 Fabrics for packaging and technical purposes. Specifications

GOST 7000-80 Textile materials. Packaging, labeling, transportation and storage

GOST 10078-85 Yarn from bast fibers and their mixtures with chemical fibers. General technical conditions

GOST 10681-75 Textile materials. Climatic conditions for conditioning and testing samples and methods for their determination

GOST 12453-77 Fabrics and piece goods, pure linen, linen and semi-linen. Primary packaging and labeling

3.2. In the technical documentation for a specific type of bags and bag fabrics (depending on the purpose, the following are indicated: composition of raw materials, linear density of yarn and threads, number of threads per 10 cm in warp and weft, surface density of 1 m of fabric, fabric width, type of fabric finishing, weave , size of the bag, weight of one bag, breaking load of the fabric, breaking load of the seam of the bag; change in the size of the bag after thermal and moisture treatment or washing, mass fraction of fire and lint.

The technical documentation may establish additional requirements for products and their labeling that are not provided for by this standard.

3.3. Depending on the purpose and type of raw materials used, bags and bag fabrics are divided in accordance with Table 1.

Information about changes:

3.3.1 The use of chemical fibers, yarns and threads not listed in Table 1 for grocery bags must be approved by the National Sanitary and Epidemiological Surveillance Authority for contact with food products,

Information about changes:

3.4 Bag fabrics are produced in the form of fabric with a width of 106; 111; 114.5; 94.5 cm or sleeves 50 wide; 56; 58 cm.

Bags are produced in the sizes indicated in table 2.

Table 1

Purpose of the bag	Type of raw materials used
Grocery bags (for packaging flour, cereals, sugar grains and other food products) and bag fabrics for them;	Yarn made from bast fibers: flax, jute, kenaf, hemp and a mixture of these fibers in various combinations -,
technical bags (for packaging ore, seeds and other products) and bag fabrics for them	yarn from bast fibers mixed with chemical fibers: viscose, copper-ammonia, polyester, polyamide;
	chemical threads: viscose, polyester, polyamide, polypropylene;
	cotton yarn

Table 2

Purpose of the bag

Bag size, cm

Bags, grocery

Technical bags

3.5 Permissible minimum deviations in physical and mechanical parameters should not exceed:

according to the width of the fabric (sleeves):


according to bag size:
	in width

along the density surface

by weight of 1 bag
	number of threads per 10 cm

	based on

Note - Plus tolerances for the listed indicators are not limited.

Information about changes:

4.1.3 Fabrics for bags, depending on their purpose, must be cut and calendered.

Fabrics for bags made from chemical film threads can be laminated with melt polypropylene or polyethylene.

Information about changes:

4.1.4 In terms of physical and mechanical parameters, bags and bag fabrics must comply with the standards specified in Table 3.

Table 3

Name of bags

Breaking load of a strip of fabric, size 50x200 mm, warp and weft, N(kgf), not less, for fabrics and bags

Mass fraction of fire, %, no more

Mass fraction of lint, %, no more

Complete change in the linear dimensions of bags, %, no more (except for bags made of chemical film threads)

ordinary

increased strength

with sealed edge

after thermal and humidity treatment

after washing

ordinary

increased strength

with sealed edge

lateral

Grocery bags;

from linen and mixed linen yarn;

the same, in combination with chemical threads, with cotton yarn;

from yarn made from jute, kenaf, hemp and short flax fibers or mixtures thereof;

the same in combination with chemical threads;

from chemical threads.

Technical bags:

from yarn made from jute, kenaf, hemp and short flax fibers or mixtures thereof;

the same, in combination with chemical threads;

from chemical threads

Notes - 1. The indicators “mass fraction of lint, %, no more” and “complete shrinkage of bags, %, no more after washing” are determined for grocery bags intended for packaging sugar.”

2. Linen mixed yarn includes yarn with a flax fiber content of at least 30%

4.1.5. The humidity of bags and bag fabrics should be no more than 14%.

For bags and bag fabrics made of polypropylene threads, humidity is not established.

4.1.6 Grocery bags should not have any foreign odor or emit harmful substances that change the properties and quality of the products.

Information about changes:

4.1.8 The bag is sewn from one piece of fabric, sewing one side and the bottom or two sides into one, and hemming the neck of the bag if there is no edge in it.

When making bags from fabric produced on a circular loom, the bag is sewn from one piece of fabric, the bottom is sewn together and the neck is hemmed.

Information about changes:

4.1.9 Sewing the sides and bottom of the bag is carried out with one or two of seven types of seams:

1 - (Figure 1);

2 - one-line overcasting with a closed cut (Figure 2);

3 - (Figure 3);

4 - one-line hem with a closed cut, folding the fabric outside the bag (Figure 4);

5 - hem with an open cut, single-line overcasting with the fabric folded outside the bag (Figure 5);

6 - single-line hem along the edge (Figure 6);

7 - single-line hem with an open cut, folding the fabric inside the bag (Figure 7).

Notes

1 All types of seams, if they have an edge, are made without bending the fabric

2 When sewing the sides and bottom of grocery bags, seams are not allowed without folding the cut edges of the fabric or without overcasting them.

Information about changes:

4.1.10 Hemming the cut edge of the fabric at the neck of the bag is carried out using a single-line hem seam with a closed cut (Figure 8) or a single-line overlock stitch with an open cut (Figure 9)

4.1.11 Sewing grocery bags

When sewing grocery bags with seam types 1 and 6 (Figure 1 and), the width of the side seam should be mi, the bottom seam should be mm. The stitching should be done no further than 3 mm from the center of the seam in any direction.

The width of the side seam when sewing with an overlock stitch of types 2 and 3 (Figures 2 and ) should be mm. In bags made of fabrics produced on pneumatic rapier machines of the ATPR type, the seam width is mm

When sewing the bottom of the bag with seams of type 4 and 5, the edge of the fabric is folded outwards of the bag to a width of mm and overcast with an overcast seam, and then the bottom of the bag is sewn with an overcast stitch with a width of mm

The neck of the bags is hemmed with a type 8 seam (Figure 8) or a type 9 seam (Figure 9). Seam width (10_2) mm

Information about changes:

4.1.12 Sewing technical bags

Sewing the sides and bottom is done using seam types 2, 3 and 7 (Figures 2, ,), seam width mm. When sewing a bag with a type 7 seam, the fabric is folded into the bag to a width of no more than 25 mm.

If there is no edge in the neck of the bag, the neck is hemmed using seams of type 7 or 8 (Figures 7 and), seam width mm.

4.1.13 Bags are sewn using polyester, polyamide, viscose and other types of threads produced in accordance with regulatory and technical documentation, ensuring that the requirements for the breaking load of the seam and the quality of sewing are maintained.

4.1.14 All threads of the seams must be secured; the fastening braid and free ends of the threads must not be more than 5 cm long.

Information about changes:

4.1.15 The number of stitches per 10 cm of seam must correspond to that indicated in table 4.

Table 4

Purpose of the bag and type of seam		The number of stitches per 10 cm is not less
Grocery bags side seam	Closed hem single line
	Single-line hem to hem
	Hem with closed or open cut, single-line overcast
bottom seam	Closed hem single line
	Single-line hem along the edge
	Hem with open or closed cut, single-line overcasting (for overcasting and sewing)
neck hemming	Closed hem single line
	Single-line hem with open cut
Technical bags: side and bottom seams	Single-line overcasting with open cut
neck hemming	Closed hem single line
	Single-line hem with open cut

4.1.16 Determination of grading of bags and bag fabrics

For bags and bag fabrics, two grades are established: first and second.

The grade of bag fabrics and bags is determined by physical and mechanical parameters, the number of defects in appearance, and the quality of sewing of the bag.

The grade is set to the worst indicator. Examples of variety definitions are given in Appendix A. Terms of defects in the appearance of bag tissues and their explanations are indicated in Appendix B.

4.1.16.1 Permissible deviations for bag fabrics and bags of the second grade but for physical and mechanical indicators are established from the minimum standards for the first grade established in the technical documentation; and they should not exceed the values given in Table 5.

Table 5

Indicator name	Grocery bags in fabric for them
Fabric width, cm
Bag size
length and width, cm
Surface density of fabric, %
Weight of 1 bag,%
Number of threads per 10 cm
by warp and weft	Not allowed

4.1.16.2. The total number of defects in appearance allowed with restrictions in bag fabrics and bags of the first and second grades should not be more than indicated in Table 6.

Table 6

	Total number of vices allowed with restrictions
	per 30 m of the conventional length of a piece of fabric, or more	per bag, no more

The name and size of appearance defects allowed with restrictions are indicated in Table 7.

Information about changes:

4.1.16.3 Defects in appearance exceeding the size indicated for the second grade in Table 7 are not allowed in bag fabrics and bags,

Table 7

Name of the vice	Dimensions and number of appearance defects allowed with restrictions, accepted as one defect
	Grocery bags and fabrics for them		Technical bags and fabrics for them
	first grade	second grade	first grade		second grade
Local damage with destruction of warp and weft threads, braid area,	Not allowed
Missing threads (twins, spans) one thread total length, cm	No more than 20		One up to 10 cm long		One up to 20 cm long or two 10 cm long each
Missing two or more threads (twins, spans)	Not allowed		Not allowed

Dives total length, cm	No more than 20
Undercuts with a decrease in weft density by no more than one thread per 1 cm	1 per bag	1 per bag	1 per bag		2 per bag
Couples and cuts that decompress the fabric	No more than 1 thread thick
Rashes and local thickenings	Three to five times the thickness of a single thread
Tear off the base without compromising the integrity of the fabric
Darning area,			Machine darning is allowed, which does not cause product spillage
Oil stains, dirt	Not allowed		Not allowed	1 spot per bag
Notes 1 The quality of the darning must meet the requirements for the quality of the fabric. 2 Fringe along the edges in fabrics produced on ATPR type machines and in bags sewn from these fabrics is not considered a defect.

4.1.16.4 The grade of bags based on the quality of sewing is determined in accordance with the requirements of Table 8.

Table 8

Name of sewing defects		Bag type
Name of sewing defects
Lack of stitches	Side and bottom	Not allowed	No more than 1 to 10 cm
	Hemming the neck	No more than 1 per 10 cm	No more than 2 by 10 cm
Skipping stitches	Side and bottom	No more than 1	2-3 in different places
	Hemming the neck	No more than 2 in one place	No more than 2 in two places

4.1.16.5 In bags, a pronounced seam tie, an oval seam, skipping and lack of stitches more than the norms indicated in Table 8 for the second grade are not allowed.

4.1.16.6 If the seam is oval, stitches are skipped, or if a pocket is formed, it is allowed to correct the defects in the form of additional stitching over the defective area, and the new seam must be started no closer than 3 cm before the beginning of the defective area and finished at the same distance from its end. The corrected area is not considered a defect.

Information about changes:

4.2.2.1 A label indicating the data characterizing the product is placed in the top pack of the bale;

names of the manufacturer and its trademark;

product names;

bag article number (if available);

bag size;

number of bags in a bale;

dates of manufacture;

designations of this standard and technical documentation.

Information about changes:

4.2.2.2. Transport marking of the bale must be applied in accordance with the requirements of GOST 14192. On the bale card or label attached to the bale, indicate:

name of the manufacturer and its trademark;

product name;

bale number;

bag article (if available);

number of bags in a bale;

gross weight;

date of manufacture.

4.3 Packaging

4.3.1 Folding and primary packaging of bag fabrics - according to GOST 12453.

4.3.2 Bags are packed in packs of 10 pieces. Packs are packed in bales weighing no more than 50 kg.

Packing bags of different purposes, sizes and grades into piles is not permitted.

Bags made from two pieces of fabric are packaged separately.

4.3.3 Bales of bags are lined on all sides with packaging fabric in accordance with GOST 5530 or other types of packaging materials and tied with rope in accordance with GOST 1868 or other binding materials. All types of packaging and binding materials used must ensure the safety of packaged products.

By agreement with the consumer, it is allowed not to line the bales with packaging material and to increase the weight of the bales when loading and unloading operations are mechanized.

Information about changes:

5.4 The manufacturer periodically controls the quality of bags based on physical and mechanical parameters, at least once a month.

The indicators “mass fraction of fire” and “mass fraction of fluff” are determined at least once a quarter.

The indicators “complete change in the linear dimensions of bags after thermal and moisture treatment,” “complete change in the linear dimensions of bags after washing” are checked when putting products into production and in case of disagreements in quality assessment.

6. Control methods

Information about changes:

6.2 Before inspection, bag fabrics and sacks must be kept for at least 24 hours in climatic conditions in accordance with GOST 10681.

It is allowed to test bags made of chemical film threads without first keeping them in climatic conditions in accordance with GOST 10681.

Information about changes:

Amendment No. 1, introduced by Decree of the State Standard of the Russian Federation of March 2, 2001 No. 105-st, amended paragraph 6.3, which comes into force on July 1, 2001.

This standard applies to grocery bags and bags for technical purposes, as well as to the fabrics used for their manufacture.
Mandatory requirements for the quality of bags are the breaking load of the fabric strip, the breaking load of the bag seam, the mass fraction of fire and the mass fraction of pile (see Table 3).

CLASSIFICATION, MAIN PARAMETERS AND DIMENSIONS

Sacks and bag fabrics must be produced in accordance with the requirements of this standard, technical documentation and technological regimes approved in the prescribed manner.
The technical documentation for a specific type of bags and bag fabrics, depending on the purpose, indicates: composition of raw materials, linear density of yarn and threads, number of threads per 10 cm in warp and weft, surface density of 1 m of fabric, fabric width, type of fabric finishing, weave, bag size, weight of one bag, breaking load of fabric, breaking load of bag seam; change in bag size after thermal and moisture treatment or washing, mass fraction of fire and lint.
By agreement between the manufacturer and the consumer, the technical documentation may establish additional requirements for products not covered by this standard.
Depending on the purpose and type of raw materials used, bags and bag fabrics are divided in accordance with Table 1.
The use of chemical fibers, yarns and threads not listed in Table 1 for grocery bags must be permitted by the Sanitary and Epidemiological Supervision Committee of the Russian Federation for contact with food products.
Bag fabrics are produced in width, cm: 106; 111; 114.5; 94.5.
The bags are produced in the sizes indicated in Table 2.

Table 1.
Table 2.

By agreement between the manufacturer and the consumer, bags can be produced in other sizes, and bag fabrics can be produced in other widths.
The permissible minimum deviations in terms of physical and mechanical parameters should not exceed:
by fabric width:
up to 100 cm... -1 cm;.
St. 100 cm... -2 cm;
according to bag size:
in width... -1 cm;
in length... -2 cm;
by surface density
fabrics... -7%;
by weight of 1 bag... -7%;
number of threads per 10 cm of fabric:
based... -2%;
for duck... -3%.
Note - Plus tolerances for the listed indicators are not limited.

GENERAL TECHNICAL REQUIREMENTS

CHARACTERISTICS

Bags are made from bag fabrics, producing -. made from bast yarn, from bast yarn mixed with chemical fibers in accordance with GOST 10078, as well as in combination with other types of yarn and threads produced according to regulatory and technical documentation.
Bag fabrics and sacks are produced in the following types: ordinary, high-strength, with a compacted edge.
Sacks and bag fabrics with a sealed edge must have one colored lining with a width of (20±2) mm. The width of the sealed edge must be at least 25 mm.
Bags and bag fabrics of increased strength must have two colored linings (15±2) mm wide with a distance of 50 mm between them.
Fabrics for bags, depending on their purpose, must be cut and calendered.
In terms of physical and mechanical indicators, bags and bag fabrics must comply with the standards specified in Table 3.
The humidity of bags and bag fabrics should be no more than 14%.
For bags and bag fabrics made of polypropylene threads, humidity is not specified.
Grocery bags should not have any foreign odor or emit harmful substances that change the properties and quality of products.
The content of metal dust in grocery bags should not exceed 3 mg per bag. Metal impurities of needle-shaped, plate-shaped and coarse shapes are not allowed.
Bags are sewn from one piece of fabric, sewing one side and the bottom or two sides into one whole, and hemming the neck of the bag if there is no edge in it.
It is allowed to sew bags from two pieces of fabric, observing the same direction of the warp threads in them. The number of such bags from the total number of bags in the batch should be no more than 5%. Table 3.

Name of bags	Breaking load of a strip of fabric, size 50×200 mm, warp and weft, N(kgf), not less, for fabrics and bags			Mass fraction of fire, %, no more	Mass fraction of lint, %, no more	Total shrinkage of bags, %, no more
						ordinary		increased strength		with sealed edge		after thermal and humidity treatment	after washing
	ordinary	increased strength	with sealed edge			lateral	bottom	lateral	bottom	lateral	bottom	after thermal and humidity treatment	after washing
1	2	3	4	5	6	7	8	9	10	11	12	13	14
Grocery bags: made of linen and mixed linen yarn;	539 (55)	656 (67)	588 (60)	451 (46)	412 (42)	548 (56)	500 (51)	480 (49)	451 (46)	2,50	4,0	6,0	10
the same, in combination with chemical threads, with cotton yarn; from yarn made from jute, kenaf, hemp and short flax fibers or mixtures thereof;	539 (55)	755 (77)	686 (70)	451 (46)	412 (42)	588 (60)	588 (60)	549 (56)	549 (56)	0,30	4,0	6,0	10
the same, in combination with chemical threads:
from chemical threads.	-	833 (85)	833 (85)	-	-	647 (66)	647 (66)	647 (66)	647 (66)	-	-	6,0	10
Technical bags: from yarn made from jute, kenaf, hemp and short flax fibers or mixtures thereof;	598 (61)	-	-	421 (43)	421 (43)	-	-	-	-	-	-	-	-
the same, in combination with chemical threads;
from chemical threads	-	833 (85)	-	-	-	586 (60)	586 (60)	-	-	-	-	-	-

Notes 1. The indicators “mass fraction of lint, %, no more” and “complete shrinkage of bags, %, no more after washing” are determined for grocery bags intended for packaging sugar.”
2. Linen blended yarn includes yarn with a flax fiber content of at least 30%.

Sewing the sides and bottom of the bag is carried out with one or two of seven types of seams:
1 - (Figure 1);
2 - one-line overcasting with a closed cut (Figure 2);
3 - (Figure 3);
4 - hem with a closed cut, single-line overcasting with the fabric folded outside the bag (Figure 4);
5 - single-line hem with an open cut, with the fabric folded outside the bag (Figure 5);
6 - single-line hem along the edge (Figure 6);
7 - single-line hem with an open cut, folding the fabric inside the bag (Figure 7).
Notes
1. All types of seams, if they have an edge, are made without bending the fabric.
2. When sewing the sides and bottoms of grocery bags, seams are not allowed without folding the cut edges of the fabric or without overcasting them.

Hemming the cut edge of the fabric at the neck of the bag is carried out using a single-line hem seam with a closed cut (Figure 8) or a single-line overlock stitch with an open cut (Figure 9).

SEWING FOOD BAGS

When sewing grocery bags with seam types 1 and 6 (Figure 1 and 6), the width of the side seam should be (15±5) mm, the bottom seam - (20±5) mm. The stitching should be done no further than 3 mm from the center of the seam in any direction.
The width of the side seam when sewing with an overlock stitch of types 2 and 3 (Figures 2 and 3) should be (10±2) mm. In bags made of fabrics produced on pneumatic rapier machines of the ATPR type, the seam width is (12±2) mm.
When sewing the bottom of the bag with seams of types 4 and 5, the edge of the fabric is folded outside the bag to a width of (15 ± 2) mm and overcast with an overcast seam, and then the bottom of the bag is sewn with an overcast stitch with a width of (10 ± 2) mm.
The neck of the bags is hemmed with a type 8 seam (Figure 8) or a type 9 seam (Figure 9). Seam width (10±2) mm.

SEWING TECHNICAL BAGS

Sewing the sides and bottom is done using seam types 2, 3 and 7 (Figures 2, 3, 7), seam width (12±2) mm. When sewing a bag with a type 7 seam, the fabric is folded into the bag to a width of no more than 25 mm.
If there is no edge in the neck of the bag, the neck is hemmed using seams of type 7 or 8 (Figures 7 and 8), seam width (12±5) mm.
When sewing bags made of polypropylene fabric, the side seam along the edge and the fused edge is made without bending the fabric, the bottom seam is made with a bend of the fabric to a width of (15±5) mm.
Bags are sewn using polyester, polyamide, viscose and other types of threads produced in accordance with regulatory and technical documentation, ensuring that the requirements for the breaking load of the seam and the quality of sewing are maintained.
All threads of the seams must be secured, the fastening braid and the free ends of the threads should not be more than 5 cm long.
The number of stitches per 10 cm of seam must correspond to that indicated in Table 4.

DETERMINATION OF THE GRADE OF BAGS AND BAGGED FABRICS

For bags and bag fabrics, two grades are established: first and second.

Table 4.

Purpose of the bag and type of seam	Seam type	Number of stitches per 10 cm
Grocery bags:
side seam	Closed hem single line Hem with closed or open cut single-line winding	15 15 12
bottom seam	Closed hem single line Single-line hem along the edge Hem with open or closed cut, single-line overcasting (for overcasting and sewing)	16 15 12
neck hemming	Open hem single line Single-line hem with open cut	7 10
Technical bags:
side and bottom seams	Single-line hem with open cut	12
neck hemming	Closed hem single line Hem with open cut, single-line marking	5 11

The grade of bag fabrics and bags is determined by physical and mechanical parameters, the number of defects in appearance, and the quality of sewing of the bag.
The grade is determined based on the worst indicator. Examples of grade definition are given in Appendix A. Terms of defects in the appearance of bag fabrics and their explanations are given in Appendix B.
Permissible deviations for bag fabrics and bags of the second grade in terms of physical and mechanical indicators are established from the minimum standards for the first grade established in the technical documentation, and they should not exceed the values specified in Table 5.

Table 5.

The total number of defects in appearance allowed with restrictions in bag fabrics and bags of the first and second grades should not be more than indicated in Table 6.

Table 6.

The name and size of appearance defects allowed with restrictions are indicated in Table 7.
Defects in appearance exceeding the size indicated for the second grade in Table 7 are not allowed in bag fabrics and bags.
In pieces of bag fabrics, unacceptable defects in appearance are subject to cutting out or, as agreed by the parties, a conditional cut. The number of cuts per conventional piece length should be no more than 3. The minimum cut length should be at least 1.3 m.

Table 7.

Name of the vice	Dimensions and number of appearance defects allowed with restrictions, accepted as one defect
	Grocery bags and fabrics for them		Technical bags and fabrics for them
	first grade	second grade	first grade	second grade
Local damage with destruction of warp and weft threads, weft area, cm	Not allowed	Up to 0.25	Up to 0.25	Up to 0.50
Missing threads (twins, spans) one thread total length, cm	No more than 20		One up to 10 cm long	One up to 20 cm long or two 10 cm long each
Missing two or more threads (twins, spans)	Not allowed		Not allowed
Dives total length, cm	No more than 20		-	-
Undercuts with a decrease in weft density by no more than one thread per 1 cm	1 per bag	1 per bag	1 per bag	2 per bag
Couples and cuts that decompress the fabric	No more than 1 thread thick		-	-
Rashes and local thickenings	Three to five times the thickness of a single thread		-	-
Tear off the base without compromising the integrity of the fabric	1	1	-	-
Darning area, cm	3	8	Machine darning is allowed, which does not cause product spillage
Oil stains, dirt	Not allowed		Not allowed	1 spot per 1 bag

Notes
1. The quality of the darning must meet the requirements for the quality of the fabric.
2. Fringe along the edges in fabrics produced on ATPR type machines and in bags sewn from these fabrics is not considered a defect.

The grade of bags based on the quality of tailoring is determined in accordance with the requirements of Table 8.

Table 8.

In bags, a pronounced seam tie, an oval seam, skipping or lack of stitches in excess of the norms specified in Table 8 for the second grade are not allowed.
If a seam is oval, stitches are skipped, or a pocket is formed, it is allowed to correct the defects in the form of additional stitching along the defective area, and a new seam should be started no closer than 3 cm to the beginning of the defective area and finished at the same distance from its end. The corrected area is not considered a defect.

APPENDIX B (mandatory)
TERMS OF DEFECTS OF APPEARANCE OF BAG TISSUE AND THEIR EXPLANATIONS

Table B1

Term	Explanation
Holes, punctures, holes, notches, knots that cause holes, folds, creases that tear the fabric	Local fabric defects with destruction of warp and weft threads
Blizna	Local fabric defect consisting in the absence of one or more warp threads
spans	Local fabric defect, consisting in the absence of one or more threads across the entire width of the fabric or in a limited area
Dives	Local defect in the form of one or more threads of one system incorrectly overlapping the threads of another system, disrupting the weave
Nedoseka	Local fabric defect in the form of a strip across the entire width of the fabric due to the reduced weft density of the fabric
Double, couple	Local defect in the form of two or more threads earned instead of one
Cutting	A common defect in the form of spread warp threads due to a violation of the density of the reed teeth
Thickening	Local defect in the form of thread thickening in a limited area
Hall	Local defect in the form of irremovable traces of folds
Warp separation	Trace of elimination of tears of a large group of main threads
Knotting	Local defect in the form of incorrectly intertwined adjacent threads
Meetings	Woven loops of weft yarn on the surface of the fabric

GOST 30090-93 “Sacks and bag fabrics. General technical conditions"

Date of introduction 1995-01-01

Preface

1 DEVELOPED by the Russian Federation - Technical Committee for Standardization TC 338 “Light Industry Products”

INTRODUCED by the Technical Secretariat of the Interstate Council for Standardization, Metrology and Certification

2 ADOPTED by the Interstate Council for Standardization, Metrology and Certification

(report of the technical secretariat No. 3 dated 04/15/94)

State name
Republic of Belarus	State Standard of Belarus
Republic of Kazakhstan
Russian Federation	Gosstandart of Russia

3 By Decree of the Committee of the Russian Federation on Standardization, Metrology and Certification dated 08.08.94 No. 207, the interstate standard GOST 30090-93 was put into effect directly as a state standard of the Russian Federation on January 1, 1995.

4 INSTEAD GOST 8516-78, GOST 18225-72, GOST 19298-73, GOST 19317-73

5 REPUBLICATION. October 2000

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Change No. 1 GOST 30090-93 Bags and bag fabrics. General technical conditions

Adopted by the Interstate Council for Standardization, Metrology and Certification (Protocol No. 18 of October 18, 2000)

Registered by Bureau of Standards MGS No. 3679

State name	Name of the national standardization body
Azerbaijan Republic	Azgosstandart
Republic of Belarus	State Standard of the Republic of Belarus
Georgia	Gruzstandart
Republic of Kazakhstan	Gosstandart of the Republic of Kazakhstan
Kyrgyz Republic	Kyrgyzstandard
Republic of Moldova	Moldovastandard
Russian Federation	Gosstandart of Russia
Republic of Tajikistan	Tajikgosstandart
Turkmenistan	Main State Inspectorate "Turkmenstan-Dartlary"
Ukraine	State Standard of Ukraine

Section 1 should be supplemented with the following paragraph:

“Sacks used for packaging dangerous goods must comply with the requirements of GOST 26319.”

“GOST 17811-78 Polyethylene bags for chemical products. Specifications

GOST 26319-84 Dangerous goods. Package

GOST 29104.0-91 Technical fabrics. Acceptance rules and sampling methods

GOST 29104.1-91 Technical fabrics. Methods for determining linear dimensions, linear and surface densities

GOST 29104.3-91 Technical fabrics. Method for determining the number of threads per 10 cm

GOST 29104.4-91 Technical fabrics. Method for determining breaking load and elongation at break.”

Clause 3.2. The second paragraph should be presented in a new edition:

“The technical documentation may establish additional requirements for products and their labeling that are not provided for by this standard.”

Clause 3.3.1. Replace the words: “The Sanitary and Epidemiological Surveillance Committee of the Russian Federation” with “The National Sanitary and Epidemiological Surveillance Authority.”

Clause 3.4. The first paragraph should be presented in a new edition:

“Bag fabrics are produced in the form of a canvas with a width of 106; 111; 114.5; 94.5 cm or sleeves 50 wide; 56; 58 cm";

The last paragraph after the word “dimensions” should be supplemented with the words: “and designs”.

Clause 3.5. Second paragraph. Replace the words: “according to the width of the fabrics” with “according to the width of the fabric (sleeves).”

Section 3 should be supplemented with clause - 3.6:

“3.6 In the designation of bags and fabrics when ordering, indicate for bags: the purpose of the bag and the type of raw material, strength group, bag size, standard designation; for fabrics: type of raw material, strength group, width, standard designation.

For example:

linen grocery bag, ordinary, 53x104 cm, GOST 3.0090-93;

technical bag made of chemical threads, increased strength, 46x65 cm, GOST 30090-93;

jute bag fabric, ordinary, width 112 cm, GOST 30090-93.”

Add paragraph 4.1.3 with the following paragraph:

“Fabrics for bags made from chemical film threads can be laminated with melt polypropylene or polyethylene”

Clause 4.1.4. Table 3. Head. For columns 13, 14, replace the words:

“Complete shrinkage of bags, %. no more" to "Complete change in the linear dimensions of bags, %, no more (except for bags made of chemical film threads)";

Columns 2, 5, 6 for grocery bags made of chemical threads should be supplemented with the following values: 588 (60). 294 (30), 294 (30);

for technical bags made of chemical threads, add the following values: 686 (70), 294 (30), 294 (30).

Add paragraph 4.1.8 with the following paragraph:

“When making bags from fabric produced on a circular loom, the bag is sewn from one piece of fabric, the bottom is sewn and the neck is trimmed.”

Section 4 should be supplemented with clause - 4.1.8.1 (after clause 4.1.8):

“4.1.8.1 By agreement with the consumer, bags can be produced with a closed (with valve) neck. The valve is formed in one of the upper corners of the bag by placing the corner of the bag inside. The neck of the bag is then sewn up with a closed hem stitch.

The valve size is determined by agreement with the consumer

Figure 1a

Add paragraph 4.1.10 with the following paragraph:

“In bags sewn from fabrics made from chemical film threads, when the color of the fabric is melted, the neck is hemmed with a single-line hem seam along the edge. It is allowed not to hem the neck with a melted cut edge, provided that the strength of the cut of the bag and the safety of the product are ensured.”

Clause 4.1.12. The last paragraph should be presented in a new edition:

“When sewing bags from fabric made from chemical film threads, the side seam along the edge or fused edge is made without bending the fabric, the bottom seam is made with the fabric folded to the width, (20± 110) mm".

Clause 4.1.15. Table 4. Column “Seam type”. Seventh paragraph. Replace the words: “with an open cut” with “with a closed cut”;

the head after the words “Number of stitches per 10 cm” is supplemented with the words: “not less.”

Clause 4.1.16.3. Table 7. Column “Name of defect”. First, ninth paragraphs. Replace the unit of physical quantity: cm by cm~2.

Section 4 should be supplemented with paragraphs - 4.1.17, 4.1.18:

“4.1.17 Bags made of fabric made from chemical film threads must withstand at least 3 impacts during free fall: from a height of 1.2 m to the bottom of the bag;

from a height of 1.6 m flat on each side.

4.1.18 By agreement with the consumer, inscriptions and drawings can be applied to the bag.

Samples of inscriptions and drawings - as agreed with the consumer. Approval of standard samples is allowed.

The inscription should be clear, even, and easy to read. Contamination or stains from printing ink that make it difficult to read the inscription and distort the design are not allowed.”

Clauses 4.2.2.1 (fourth paragraph), 4.2.2.2 (fifth paragraph) after the words “bag article” should be supplemented with the words: “(if any)”.

Section 4 should be supplemented with clause - 4.3.4:

“4.3.4 It is allowed, by agreement with the consumer, to use other methods of packaging bags that ensure the safety of products.”

Clause 5.4. The last paragraph should be stated in a new edition: “The indicators “a complete change in the linear dimensions of bags after thermal and humidity treatment”, “a complete change in the linear dimensions of bags after washing” are checked when putting products into production and in case of disagreements in quality assessment.”

Clause 6.1 after the words “according to GOST 20566” is supplemented with the reference: GOST 29104.0.

Add paragraph 6.2 with the following paragraph:

“It is allowed to test bags made of chemical film threads without first keeping them in climatic conditions in accordance with GOST 10681.”

Clause 6.6. Last paragraph. Replace the value: ±0.1 g with ±1 g. Eliminate the words: “the result is rounded to 1 g.”

Clause 6.7. The first paragraph should be supplemented with the words: “Count the whole number of stitches per 10 cm of seam.”

the second paragraph should be supplemented with the words: “The sample size for determining the breaking load of the seam is specified in Appendix B”;

the last paragraph should be stated in a new edition:

“The arithmetic mean of all measurements is taken as the test result. The calculation is carried out accurate to the first decimal place, followed by rounding to the nearest whole number.”

Clauses 6.12. 6.12.1. 6.12.2. Replace the words: “complete shrinkage of bags” with “complete change in linear dimensions.”

Add paragraph 6.12.1 (after the first): “Before and after processing, the linear dimensions of the bags are measured in accordance with 6.5.”

Clause 6.12.2. The third paragraph after the words “Washing is carried out” should be supplemented with the words: “clean water”;

The fifth paragraph should be stated in a new edition:

“After washing and spinning, the bags are straightened and hung to dry in a heat chamber or in air.”

Clause 6.12.3. First paragraph. Replace the words: “Shrinkage along the length Y and width Uh* with “Change in linear dimensions along the length Y and width of the spacecraft”:

replace the words: “Complete shrinkage” with “Complete change in linear dimensions.”

Section 6 should be supplemented with clause - 6.16:

“6.16 Determination of strength during free fall - according to GOST 17811.

To control the strength during dropping, 5 bags are selected from the sample selected according to 5.3.”

Bibliographic data. Replace group: D25 with D95; add OKP code: 22 9700.

(IUS No. 5 of 2001)

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