Bag fabric GOST 30090 93. Instructions for use

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

Introduction date 1995-01-01

Foreword

1 DEVELOPED by the Russian Federation - Technical Committee for Standardization TK 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 15.04.94)

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

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

5 REVISION. October 2000

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Amendment No. 1 to GOST 30090-93 Sacks and bag fabrics. General specifications

Adopted by the Interstate Council for Standardization, Metrology and Certification (Minutes No. 18 of 10/18/2000)

Registered by the IGU Standards Bureau No. 3679

Section 1 shall be supplemented with the paragraph:

"Bags used for packing 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 method

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 reworded as follows:

“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: "Committee of Sanitary and Epidemiological Supervision of the Russian Federation" with "National Body of Sanitary and Epidemiological Surveillance".

Clause 3.4. Rewrite the first paragraph:

“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" shall be supplemented with the words: "and structures".

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

Section 3 shall be supplemented with paragraph - 3.6:

“3.6 In the symbol 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.

Paragraph 4.1.3 shall be supplemented with the paragraph:

"Fabrics for bags made from chemical film yarns can be melt-laminated with polypropylene or polyethylene"

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

“Full shrinkage of bags, %. no more” to “Total 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 man-made threads shall be supplemented with the values ​​respectively: 588 (60). 294 (30), 294 (30);

for technical sacks made of man-made threads, add the values ​​respectively: 686 (70), 294 (30), 294 (30).

Paragraph 4.1.8 shall be supplemented with the following paragraph:

“In the manufacture of 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 trimmed.”

Section 4 shall 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 a valve) mouth. The valve is formed in one of the upper corners of the bag by laying the corner of the bag inside. Then the neck of the bag is sewn up with a hem seam with a closed cut.

The valve size is set in agreement with the consumer

Figure 1a

Paragraph 4.1.10 shall be supplemented with the following paragraph:

“In bags sewn from fabrics made from chemical film threads, with a melted edged color of the fabric, the neck is hemmed with a single-line seam, folded along the edge. It is allowed not to hem a 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. Revise the last paragraph:

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

Clause 4.1.15. Table 4. Column "Type of seam". Seventh paragraph. Change the words: "open cut" to "closed cut";

head after the words "Number of stitches per 10 cm" to add the words: "not less".

Clause 4.1.16.3. Table 7. Column "Name of the defect". First, ninth paragraphs. Change the unit of physical quantity: cm to cm~2.

Section 4 shall 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.

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

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

Samples of inscriptions and drawings - in agreement with the consumer. Approval of reference samples is allowed.

The inscription must be clear, even and easy to read. No contamination or stains from printing ink are allowed, which make it difficult to read the inscription and distort the drawing.

Paragraphs 4.2.2.1 (fourth paragraph), 4.2.2.2 (fifth paragraph) after the words "bag article" shall be supplemented with the words: "(if any)".

Section 4 shall be supplemented with paragraph - 4.3.4:

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

Clause 5.4. The last paragraph should be reworded: “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 disagreement in assessing quality.

Paragraph 6.1 after the words "according to GOST 20566" shall be supplemented with the reference: GOST 29104.0.

Paragraph 6.2 shall be supplemented with a paragraph:

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

Clause 6.6. Last paragraph. Change the value: ±0.1 g to ±1 g. Delete the words: “the result is rounded to the nearest 1 g”.

Clause 6.7. Supplement the first paragraph with the words: “Count an integer number of stitches per 10 cm of a seam.”

Supplement the second paragraph with the words: “The size of the sample for determining the breaking load of the seam is indicated in Appendix B”;

Rewrite the last paragraph:

“The arithmetic mean of all measurements is taken as the test result. The calculation is carried out with an accuracy of the first decimal place, followed by rounding up to an integer.

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

Paragraph 6.12.1 shall be supplemented with a paragraph (after the first one): “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 “Laundry is carried out” shall be supplemented with the words: “clean water”;

the fifth paragraph shall be stated in a new wording:

“After washing and squeezing, 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 Yh* with “Change in linear dimensions along the length Y and width KA”:

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

Section 6 shall be supplemented with paragraph - 6.16:

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

To control the drop strength, 5 bags are taken from the sample selected according to 5.3.

bibliographic data. Replace group: D25 with D95; supplement with OKP code: 22 9700.

(IUS No. 5 2001)

The document is not available in full mode

Appendix A (mandatory) Examples of determining the grade of bags Appendix B (mandatory). Terms of defects in the appearance of sac tissues and their explanations Appendix B (recommended). The scheme of cutting the bag for testing and the pattern of the sample for determining the breaking load of the seam

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

With changes and additions from:

Sacks and fabric for bads. General specifications

Introduction date 1 January 1995
Instead of GOST 8516-78,
GOST 18225-72,
GOST 19298-73,
GOST 19317-73

Information about changes:

1 area of ​​use

This standard applies to food 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 a strip of fabric, the breaking load of the seam of the bag, the mass fraction of fires 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 utility 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 handicrafts. Methods for determining the density of threads and bunches of pile

GOST 3813-72 Textile materials. Fabrics and handicrafts. Methods for determining rupture characteristics in tension

GOST 5530-81 Packaging and technical fabrics. Specifications

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

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

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

GOST 12453-77 Pure linen, linen and half-linen fabrics and piece goods. Primary packaging and labeling

3.2. In the technical documentation for a specific type of bags for bag fabrics (depending on the purpose, the composition of the raw material, the linear density of yarn and threads, the number of threads per 10 cm in warp and weft, the surface density of 1 m of fabric, the width of the fabric, the type of fabric finish, weave , bag size, weight of one bag, breaking load of 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 pile.

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 food contact,

Information about changes:

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

The bags are produced in the sizes indicated in table 2.

Table 1

table 2

This standard applies to food 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 a strip of fabric, the breaking load of the seam of the bag, the mass fraction of fires and the mass fraction of pile (see table 3).

CLASSIFICATION, MAIN PARAMETERS AND DIMENSIONS

Bags 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: the composition of raw materials, the linear density of yarn and threads, the number of threads per 10 cm in warp and weft, the surface density of 1 m of fabric, the width of the fabric, the type of fabric finish, weave, bag size, weight of one bag, fabric breaking load, bag seam breaking load; change in the size of the bag after thermal and moisture treatment or washing, mass fraction of fires and pile.
By agreement between the manufacturer and the consumer, the technical documentation may establish additional requirements for products that are not provided for by this standard.
Depending on the purpose and type of raw materials used, bags and bags of fabric 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 approved by the Sanitary and Epidemiological Supervision Committee of the Russian Federation for contact with food.
Bag fabrics are produced in width, cm: 106; 111; 114.5; 94.5.
The bags are produced in the sizes shown in Table 2.

Table 1.
Table 2.

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

GENERAL TECHNICAL REQUIREMENTS

CHARACTERISTICS

Bags are made from bag fabrics, producing -. from bast yarn, from bast yarn mixed with chemical fibers according to GOST 10078, as well as in combination with other types of yarn and threads produced according to normative and technical documentation.
Bag fabrics and bags are available in the following types: ordinary, high strength, with a sealed edge.
Sacks and sack fabrics with a sealed edge should have one color spacer (20 ± 2) mm wide. The width of the sealed edge must be at least 25 mm.
Sacks and sack fabrics of increased strength must have two colored spacers (15 ± 2) mm wide with a distance of 50 mm between them.
Fabrics for bags, depending on the purpose, must be trimmed, calendared.
According to physical and mechanical parameters, bags and bag fabrics must comply with the standards specified in Table 3.
Humidity of bags and bag fabrics should be no more than 14%.
For bags and bag fabrics made of polypropylene threads, the humidity is not established.
Grocery bags should not have a foreign smell and 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. Acicular, lamellar and grainy metal impurities are not allowed.
Bags are sewn from one piece of fabric, sewing one side and bottom or two sides into one piece, and the neck of the bag is hemmed if there is no edge in it.
It is allowed to sew bags from two cuts of fabric, observing the same direction of the warp threads in them. The number of such bags of the total number of bags in a batch should not exceed 5%. Table 3

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

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

SEWING GROUP BAGS

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

SEWING TECHNICAL BAGS

The side and bottom are sewn with a seam of types 2, 3 and 7 (Figures 2, 3, 7), the width of the seam is (12 ± 2) mm. When sewing a bag with a type 7 seam, the fabric is bent inside the bag to a width of not more than 25 mm.
In the absence of an edge in the neck of the bag, the neck is hemmed with seams of type 7 or 8 (Figures 7 and 8), the width of the seam is (12 ± 5) mm.
When sewing bags from polypropylene fabric, the side seam along the edge and the melted edge is made without bending the fabric, the bottom seam is made with bending the fabric to a width of (15 ± 5) mm.
Bags are sewn with polyester, polyamide, viscose and other types of threads produced according to normative and technical documentation, ensuring that the requirements for the breaking load of the seam and the quality of tailoring are maintained.
All seam threads must be fastened, the bartack braid and the free ends of the threads should not be more than 5 cm long.
The number of stitches per 10 cm of the seam must correspond to that indicated in table 4.

GRADING OF BAGS AND SACK FABRICS

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

Table 4

The grade of sack fabrics and sacks is determined by physical and mechanical parameters, the number of appearance defects, and the quality of the sack tailoring.
The grade is set according to the worst indicator. Examples of class definition are given in Appendix A. The terms of defects in the appearance of sack 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 parameters are set from the minimum standards for the first grade established in the technical documentation, and they should not exceed the values ​​\u200b\u200bspecified in Table 5.

Table 5

The total number of defects in appearance, allowed with a restriction in bag fabrics and bags of the first and second grade, should not exceed that indicated in table 6.

Table 6

The name and size of defects in appearance, allowed with a restriction, are indicated in Table 7.
Defects in appearance exceeding the size specified for Class II in Table 7 are not allowed in bag fabrics and bags.
In pieces of bag fabrics, unacceptable defects in appearance are subject to cutout or, by agreement of the parties, a conditional cut. The number of cuts per nominal length of a piece should be no more than 3. The minimum cut length should be at least 1.3 m.

Table 7

The grade of bags according to the quality of tailoring is determined in accordance with the requirements of table 8.

Table 8

In bags, a pronounced screed of the seam, oval of the seam, skipping and lack of stitches more than the norms indicated in Table 8 for the second grade are not allowed.
When the seam is oval, skipped stitches, as well as when a pocket is formed, it is allowed to correct defects in the form of additional stitching at the defective place, and the new seam must be started no closer than 3 cm to the beginning of the defective place and finished at the same distance from its end. The corrected place is not considered a defect.

APPENDIX B (mandatory)
TERMS OF DEFECTS IN THE APPEARANCE OF POUCH FABRICS AND THEIR EXPLANATIONS

Table B1

GOST 30090-93

INTERSTATE STANDARD

BAGS AND SACK FABRICS

GENERAL SPECIFICATIONS

INTERSTATE COUNCIL
ON STANDARDIZATION, METROLOGY AND CERTIFICATION

Minsk

Foreword

1. DEVELOPED by the Russian Federation - Technical Committee for Standardization TK 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 15.04.94)

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

Introduction date 1995-01-01

1 AREA OF USE

This standard applies to food 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 a strip of fabric, the breaking load of the seam of the bag, the mass fraction of fires 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 grocery bags must be approved by the National Sanitary and Epidemiological Surveillance Authority for food contact.

(Revised edition, Rev. No. 1).

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

The bags are produced in the sizes indicated in the table.

Table 1

table 2

By agreement between the manufacturer and the consumer, bags can be produced in other sizes and designs, bag fabrics - in a different width.

(Revised edition, Rev. No. 1).

3.5. Permissible minimum deviations in terms of 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;

by bag size:

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

by lenght................................................ ....... - 3 cm;

by surface density

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

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

number of threads per 10 cm

fabrics:

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

by duck ................................................ ................ - 3% .

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

(Revised edition, Rev. No. 1).

3.6. In the symbol for bags and fabrics, when ordering, indicate for bags: the purpose of the bag and the type of raw material, the strength group, the size of the bag, the designation of the standard for fabrics: the type of raw material, the strength group, the width, the 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 according to GOST 10078, and also in combination with other types of yarn and threads produced according to regulatory and technical documentation.

4.1.2. Bag fabrics and bags are available in the following types: ordinary, high strength, with a sealed edge.

Sacks and sackcloths with sealed edges shall have one color spacer (20 ± 2) mm wide. The width of the sealed edge must be at least 25 mm.

Sacks and sack fabrics of increased strength must have two colored spacers (15 ± 2) mm wide with a distance of 50 mm between them.

4.1.3. Fabrics for bags, depending on the purpose, must be trimmed, calendared.

Bag fabrics made from chemical film yarns can be melt laminated with polypropylene or polyethylene.

(Revised edition, Rev. No. 1).

4.1.4. According to physical and mechanical indicators, bags and bag fabrics must comply with the standards specified in the table.

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

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

4.1.6. Grocery bags should not have a foreign smell and 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. Acicular, lamellar and grainy metal impurities are not allowed.

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

It is allowed to sew bags from two cuts of fabric, observing the same direction of the warp threads in them. The number of such bags of the total number of bags in a batch should not exceed 5%.

In the manufacture of 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.

(Revised edition, Rev. No. 1).

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

The size of the valve is set in agreement with the consumer.

Figure 1a

(Introduced additionally, Rev. No. 1).

Table 3

(Revised edition, Rev. No. 1).

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

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

2 - in a hem with a closed cut, overcast single-line (figure);

3 - hem with an open cut overcast single-line (figure);

4 - hem with a closed cut overcast single-line with a bend of the fabric outward of the bag (figure);

5 - hem with an open cut overcast single-line with a bend of the fabric outward of the bag (figure);

6 - single-line folded along the edge (figure);

7 - hem with an open cut overcast single-line with a bend of the fabric inside the bag (figure).

Notes

1. All types of seams in the presence of edges are performed without bending the fabric.

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

Figure 9

4.1.10. Hemming the cut edge of the fabric in the neck of the bag is carried out with a single-line hem seam with a closed cut (figure) or a single-line overlock seam with an open cut (figure).

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

(Revised edition, Rev. No. 1).

4.1.11. Tailoring of grocery bags

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

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

When sewing the bottom of the bag with seams of type 4 and 5, the edge of the fabric is folded out of 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 seam with a width of (10 ± 2) mm.

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

4.1.12. Tailoring of technical bags

The side and bottom are sewn with a seam of types 2, 3 and 7 (figures , , ), the width of the seam is (12 ± 2) mm. When sewing a bag with a type 7 seam, the fabric is bent inside the bag to a width of not more than 25 mm.

In the absence of an edge in the neck of the bag, the neck is hemmed with seams of type 7 or 8 (Figures and), the seam width is (12 ± 5) mm.

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

(Revised edition, Rev. No. 1).

4.1.13. Bags are sewn with polyester, polyamide, viscose and other types of threads produced according to normative 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 seam threads must be fastened, the bartack 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 a seam must correspond to that indicated in the table.

4.1.16. Grading of bags and bag fabrics

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

Table 4

(Revised edition, Rev. No. 1).

The grade of sack fabrics and sacks is determined by physical and mechanical parameters, the number of appearance defects, and the quality of the sack tailoring.

The grade is set according to the worst indicator. Examples of class definitions are given in the appendix. The 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 parameters are set from the minimum standards for the first grade, established in the technical documentation; and they must not exceed the values ​​given in the table.

Table 5

4.1.16.2. The total number of defects in appearance, allowed with a restriction in bag fabrics and bags of the first and second grade, should not exceed that indicated in the table.

Table 6

The name and size of defects in appearance, allowed with a restriction, are indicated in the table.

4.1.16.3. Defects in appearance exceeding the size indicated for Class II in the table, in bag fabrics and bags, are not allowed.

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

Table 7

(Revised edition, Rev. No. 1).

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

Table 8

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

4.1.16.6. When the seam is oval, skipped stitches, as well as when a pocket is formed, it is allowed to correct defects in the form of additional stitching at the defective place, and the new seam must be started no closer than 3 cm to the beginning of the defective place and finished at the same distance from its end. The corrected place is not considered a defect.

4.1.17. Bags made of fabric made from chemical film yarns 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 drop, there must be no rupture of the bag or loss of contents. A small leak at the piercing of the bag is not considered a defect in the bag, provided that no further spillage of the product occurs when the bag is lifted.

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

Samples of inscriptions and drawings - in agreement with the consumer. Approval of reference samples is allowed.

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

No contamination or stains from printing ink are allowed, which make it difficult to read the inscription and distort the drawing.

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

4.2. Marking

4.2.1. Marking of bag fabrics in accordance with GOST 30084.

4.2.2. Bag labeling.

4.2.2.1. A label is put into the top pack of the bale with the data characterizing the products:

the name of the manufacturer and its trademark;

product names;

article of the bag (if any);

bag size;

varieties;

the number of bags in a bale;

manufacturing dates;

designations of this standard and technical documentation.

4.2.2.2. The 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;

Name of product;

bale number;

bag article (if any);

grade;

the number of bags in a bale;

gross weight;

date of manufacture.

4.2.2.1, 4.2.2.2 (Revised edition, Rev. 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. Bundles are packed in bales weighing no more than 50 kg.

Packing in a pile of bags of different purposes, sizes and grades is not allowed.

Bags sewn from two pieces of fabric are packed separately.

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

By agreement with the consumer, it is allowed not to sheathe the bales with packaging material and to increase the weight of the bale during the mechanization of loading and unloading operations.

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

(Introduced additionally, Rev. No. 1).

5. ACCEPTANCE RULES

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

5.2. Rules for acceptance of bag fabrics in accordance with GOST 20566, GOST 29104.0.

(Revised edition, Rev. No. 1).

It is allowed to test bags made of chemical film threads without preliminary 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. (Revised edition, Rev. No. 1).

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

6.7. To count the number of stitches per 10 cm of the seam and measure the width of the seam, five bags are selected from the sample selected by . Counting is carried out on each bag in three places: two counts in the side and hemming seams and one in the bottom and overcasting. Count an integer number of stitches per 10 cm 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 breaking load, the load of the fabric and the seams, five bags are selected according to . The size of the sample for determining the breaking load of the seam is indicated in the appendix.

The distance between the jaws of the tensile testing machine is set to 200 mm. The rate of lowering the lower clamp should provide the duration of the sample stretching to break 15 - 45 s.

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

The arithmetic mean of all measurements is taken as the test result. The calculation is carried out with an accuracy of the first decimal place, followed by rounding to an integer.

6.6. - 6.8. (Revised edition, Rev. No. 1).

6.9. Determination of the mass fraction of bonfires

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

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

(1)

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

T 2 - weight of the 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 the mass fraction of fires and the mass fraction of pile

6.10.1. Sampling for testing - according to . One of the sides of each received sample is marked.

6.10.2. When testing, the following devices, fixtures and tools are used: an electric razor of the Kharkiv type with floating knives, a metal comb with a needle frequency 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 fixing samples, balances with a weighing error of ± 0.01 g.

6.10.3. Before testing, each sample is weighed with an error of not more than ± 0.01 g and fixed in a frame-hoop on a base-beam.

From the surface of the sample, a free and partially woven bonfire (with one end protruding freely) is selected with tweezers.

To raise the crumpled 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 pile remaining on the comb is collected.

With an electric razor, the surface of the sample is treated with a spiral movement 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 pile is selected from the tray of the electric razor with a brush, tweezers or a long needle, and after the third stage, the pile is also collected from the knife block.

The pile, which has fallen out freely, removed with a metal comb and an electric razor, is connected together and weighed on a balance 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 with the untreated side, the remaining fire is selected, attached to the one collected earlier and weighed with an error of ± 0.01 g.

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

Table 9

Mass fraction of bonfiresK, %, calculated according to the formula

(2)

The result is calculated to the nearest 0.001 and rounded up to 0.01%.

Mass fraction of pileB, %, calculated by the formula

(3)

The result is calculated to the nearest 0.01 and rounded up to 0.1%.

6.11. Determination of metal impurities

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

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 m 2 . Each side is cleaned twice.

After cleaning the bags, all bag marks are collected with a magnet. The metal impurities collected by the magnet are weighed and the arithmetic average of all weighings is determined.

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

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

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

Bags are processed in the exterminator in accordance with the approved technological regime.

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

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

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

It is allowed to wash bags in washing machines of another type while maintaining the washing regime.

After washing and squeezing, the bags are straightened and dried in a heat chamber or in air in a suspended state.

Dry bags are measured with the fabric of the bag fully extended.

6.12.3. Changing linear dimensions along the lengthYl and width Yb, %, calculated by 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 - the average width of the bags after processing, see

Full change of linear dimensionsY, %, calculated by the formula

(6)

6.12, 6.12.1 - 6.12.3 (Revised edition, Rev. No. 1).

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

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

Humidity of the bag W, %, calculated by the formula

(7)

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

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

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 under reflected light on a grading table or rolling, which has an inclination to the vertical from 25° to 30°.

In the event of disagreement, tissue viewing is carried out in natural light.

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

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

To control the drop strength, 5 bags are selected from a sample selected by .

(Introduced additionally, Rev. No. 1).

7. TRANSPORT AND STORAGE

7.1. Transportation and storage of bag fabrics and bags - according to GOST 7000.

8. INSTRUCTIONS FOR USE

8.1. Unloading and storage of empty bags.

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

When unloading, the bags must not be damaged.

8.1.2. Bales of bags must be stacked in stable piles.

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 must be sewn on a Class 38-A or equivalent sewing machine.

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.

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

Annex A

(mandatory)

EXAMPLES OF DETERMINING THE GRADE OF BAGS

Example 1. Determination of the grade of bags according to defects in appearance, allowed with restriction, and according to physical and mechanical indicators.

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

Resampling result:

a) all bags correspond to the first grade, the whole lot is evaluated by the first grade;

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

Example 2. Determining the grade of bags by the quality of tailoring

When looking at 100 bags taken from the batch, it was found that 50 bags had no sewing defects, 20 had a skip of one stitch per line of the sewing seam, 30 had skipped two stitches in one place, in the hemming seam of the neck.

The whole lot belongs to the first grade.

Example 3 Determining the Grade of a Lot of Bags

Bags after the final assessment were attributed to defects in appearance, allowed with a restriction to the second grade, according to physical and mechanical parameters - to the first grade, according to the quality of tailoring - to the first grade.

The batch of bags belongs to the second grade.

Annex B

(mandatory)

TERMS OF DEFECTS IN THE APPEARANCE OF POUCH FABRICS AND THEIR EXPLANATIONS

Table B1

Annex B

SCHEME OF CUTTING THE BAG FOR TESTS

1 - a sample for determining the breaking load of the bottom seam; 2 - sample for determining 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 warp; 4 - a sample for determining the breaking load and the number of threads per 10 cm of fabric by weft; 5 - a sample for determining the mass fraction of fires and the mass fraction of pile

Figure 11

Figure 12

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

Samples 3, 4 are cleaned in width by 50 mm.

Keywords:bags, bag fabrics

(Revised edition, Rev. No. 1).