Some standard content:
Chemical Industry Standard of the People's Republic of China
HG 2291 92
Waterproof rubber coated fabric
Issued on 1992-06-01
Ministry of Chemical Industry of the People's Republic of China
Implementation on 1993-10-01
Standard Oil Granting Network wmx.baaomc.com Chemical Industry Standard of the People's Republic of China
Waterproof rubber coated fabric
HG2291-92
This standard refers to Part 3 "Natural rubber and synthetic rubber coated fabrics" in the international standard ISO8096-3-1988 "Specifications for rubber or plastic coated fabrics used as waterproof cloth". 1 Subject content and scope of application
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation, storage, etc. of waterproof rubber coated fabrics (hereinafter referred to as coated fabrics). This standard is applicable to single-sided rubber coated fabrics, double-sided rubber coated fabrics or laminated rubber coated fabrics made of fiber fabrics and rubber or rubber and plastics through coating to make them waterproof. The coated fabric is used to make waterproof work clothes for labor protection or waterproof clothing, rain gear, etc. This standard does not apply to waterproof rubber coated fabrics used as awnings or other special technical requirements. 2 Reference standards
GB5571
Determination of water permeability of adhesive tape
GB5572
Determination of tear strength and elongation of adhesive tape GB5573
Determination of tear resistance of adhesive tape
GB7537
GB7538
GB7539
Accelerated aging test for rubber coated fabrics
Determination of whole roll characteristics of rubber coated fabrics
Standard environment for storage and testing of rubber coated fabrics GB10720
Determination of adhesion strength of coating layer of rubber or plastic coated fabrics 3 Product classification
Coated fabrics according to their structure It is divided into the following 3 types: Type I: single-sided rubber coated fabric; Type II: double-sided rubber coated fabric; Type II: laminated rubber coated fabric. 4 Technical requirements 4.1 The physical properties of the coated fabric shall comply with the provisions of Table 1. Approved by the Ministry of Chemical Industry of the People's Republic of China on June 1, 1992, implemented on October 1, 1993, tensile strength, kN/m, tear resistance, N, coating adhesion strength, N/m, water permeability resistance (30kPa×60min), cold resistance (-20℃×4h, Liqu 180°), heat resistance ( 125℃×4h）
Coating layer adhesion strength change rate (70℃×72h), %Tensile strength change rate (70℃×72h), %Vulcanization degree
4.2 Roll characteristics of coated fabric
4.2.1 Length
The roll length and number of sections of coated fabric shall comply with Table 2. Roll length, m
Not less than
Number of sections, sections
Not more than
HG229192
Not less than
Not less than
Not less than
Not less than
Not less than
Reduced by not more than
Reduced by not more than
Impermeable Water
No breaks or cracks in the coating
No stickiness or cracking in the coating
No signs of adhesiveness in the coating
Shortest section length, m
Width not more than 1.0m
Note: Other requirements for the length of the whole roll, the number of sections or the length of the section can be agreed upon by both parties. 4.2.2 Width
The width of the coated fabric shall be agreed upon by both parties.
4.2.3 Thickness or unit area mass
The thickness or unit area mass of the coated fabric shall be determined according to the different product types and different uses of work clothes, rain gear, clothing,
and can be agreed upon by both parties.
The thickness difference of the coated fabric in the same width shall not be more than 15%, and the thickness difference of the whole roll shall not be more than 20%. Standard Investment Network
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HG2291-92
4.3 Appearance quality
4.3.1 The appearance of the coated fabric should be uniform in color, smooth and clean, and should not have any obvious defects that affect the appearance and use. 4.3.2 On the principle of not affecting the use and water permeability of coated fabrics, the appearance defects on the surface are shown in Table 3. Table 3
Defect name
1 Live wrinkles
2 Dead wrinkles
3 Seam marks.
4 Stains
5 Foreign sand particles
6 Rubber particles and blocks
7 Single-side curling
8 Uneven patchwork
9 Effective coating defects on the edge of the fabric
10 Thread ends
11 Mechanical damage
2 Powder spots
13 Airways
14 Glue penetration on the fabric
15 Fabric pattern marks
Not allowed
Not allowed
Not allowed
Not allowed Allowed
Not allowed
Not allowed
First-class products
Width not more than 5mm
Edge width deviation not more than 5mm
Allowed to exist around both sides, but the width of each side is not more than 5mm
Not allowed
Not allowed“.
Not allowed
Not allowedWww.bzxZ.net
Allowed to be slightly uniform
Not allowed
Allowed to be slightly uniform\
Not allowed
Allowed to be smooth
Not allowed
Not allowed
Qualified products
Diameter not more than 1mm
Width not more than 10mm
Edge width deviation not more than 10 mm
Allow both sides to exist at the same time, but the width of each side shall not exceed 10mm
Length shall not exceed 50mm
Not allowed
Slight defects are allowed
Almost uniform
Slight unevenness is allowed
Slight unevenness is allowed
Note: ① Appearance defects not listed in Table 3 can be handled as similar defects by the manufacturer's technical supervision department or the supplier and the belt supplier. ② If the points of the fiber fabric affect the appearance quality and use of the coated fabric, they shall be handled as similar appearance defects in Table 3, or agreed upon by the supply and demand parties 1) Use standard samples for comparison.
4.3.3 The number of defects specified in Table 3 is expressed as the entire length of the coated fabric where they are located. For coated fabrics with a width of not more than 1.0m, the starting value is 0.25m, and 0.25m is used as a counting unit, that is, when the length of the defect is not more than 0.25m, the defect is counted. The length of the defect is 0.25m. When the length of the defect is greater than 0.25m and not greater than 0.50m, the defect is counted as 0.50m, and so on. For coated fabrics with a width greater than 1.0m, the starting value is 0.10m, and 0.10m is used as a counting unit, that is, when the length of the defect is not greater than 0.10m, the defect is counted as 0.10m, when the length of the defect is greater than 0.10m and not greater than 0.20m, the defect is counted as 0.20m, and so on. 4.3.4 The cumulative length of the corresponding appearance defects of first-class products shall not exceed 1/4 of the length of the whole roll; the cumulative length of the corresponding appearance defects of qualified products shall not exceed 1/2 of the length of the whole roll. 4.3.5 The appearance defects of dense or large areas of bubbles, delamination, damage, dead wrinkles, lack of glue, oversulfurization, etc. that have no use value in coated fabrics should be treated as waste and should be cut from the whole roll of coated fabrics. con Various standard industry information free download
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5 Test method
5.1 Physical property test method
5.1.1 Sampling
HG2291-92
The sample should be sampled 1.0m away from the end of the whole roll of coated fabric and more than 10cm away from the edge. And it can represent the batch of products manufactured. 5.1.2 Standard environment for sample placement and testing The samples of coated fabrics must be placed in environment A and method A in GB7539. 5.1.3 The tensile strength test must be carried out in accordance with GB5572. 5.1.4 The tear resistance test must be carried out in accordance with the "single tongue method" in GB5573. 5.1.5 The coating adhesion strength test must be carried out in accordance with GB10720. 5.1.6 The water permeability test must be carried out in accordance with method A2 in GB5571. 5.1.7 The cold resistance test must be carried out in accordance with Appendix A. 5.1.8 The heat resistance test must be carried out in accordance with method A in GB7537. 5.1.9 The aging test shall be carried out according to Method A in GB7537, and the physical properties after aging shall be measured according to GB5573 and GB10720 respectively.
5.1.10 The degree of aging shall be carried out according to Appendix B.
5.1.11 The determination of the length, width, thickness and unit area mass of the whole roll shall be carried out according to the relevant provisions of GB7538. 5.2 The appearance quality of the coated fabric shall be checked by visual inspection, and the defect length shall be measured with appropriate measuring tools and counted according to the provisions of Article 4.3.3. 6 Inspection rules
6.1 Inspection classification
Inspection is divided into factory inspection and type inspection. 6.1.1 Factory inspection
The appearance quality, length, width, thickness and unit area mass of the whole roll shall be inspected before leaving the factory. 6.1.1.1 Appearance quality
Appearance quality shall be tested according to the method in 5.2 and shall meet the requirements in 4.3. The product shall be fully inspected for appearance quality. 6.1.1.2 Length of the whole roll
The length of the whole roll and the number and length of each roll shall meet the requirements in 4.2.1. Test according to the method in 5.1.11. The product shall be fully inspected for the length of the whole roll
6.1.1.3 Width, thickness and unit area mass The width, thickness and unit area mass shall meet the requirements in 4.2.2 and 4.2.3. Test according to the method in 5.1.11. Each roll of coated fabric shall be sampled and inspected for its width, thickness and unit area mass once. 6.1.2 Type inspection
6.1.2.1 Type inspection shall be carried out in any of the following cases: a. Trial production and identification of new products or old products transferred to the factory for production; b. After formal production, if there are major changes in structure, formula, materials, and processes that may affect product performance; during normal production, periodic inspection should be carried out C
after a certain amount of production (not more than 100,000m);
d. When the product is stopped for half a year and production is resumed; e. "When the national quality supervision agency proposes a requirement for type inspection. 6.1.2.2 The items of product type inspection are appearance quality, roll length, width, thickness, unit area mass and physical properties. The inspection batch for physical property measurement is 15 days of production or less than 100,000m. 6.2 Judgment rules
Standard digging network mm.b28080.com Customer standard industry data free download HG 2291 - 92
6.2.1 Appearance quality is a full inspection item, and products are judged and handled in accordance with Article 4.3. Products that do not meet the requirements of first-class products can be re-inspected and handled in accordance with the requirements of qualified products.
6.2.2 The entire roll length is a full inspection item, and products are inspected and judged in accordance with Article 4.2.1. Rolls that do not meet the length, number of sections and section length requirements are unqualified rolls.
6.2.3 The inspection of width, thickness and unit area quality is a sample test for each roll. If it does not meet the requirements of Articles 4.2.2 and 4.2.3, the roll is an unqualified roll.
6.2.4 Physical performance inspection: For product batches with first-class appearance, re-inspection is not allowed; for product batches with qualified appearance, if any item in Table 1 is found to not meet the requirements, it is allowed to take double tests from the same batch of products. The sample shall be retested. If the test result still does not meet the requirements of Table 1, the batch of products shall be unqualified.
6.2.5 If there is a dispute between the supplier and the buyer over the quality of the coated fabric, the national quality organization shall conduct arbitration in accordance with the provisions of this standard and the quality agreement or contract between the supplier and the buyer.
7 Marking, packaging, transportation and storage
7.1 The end of each roll of coated fabric or its packaging bag shall be marked with the inspection result, which shall include: a.
Manufacturer name and trademark;
b. Product name;
Product standard code;
Product model or product mark;
Manufacturing date (or number) or production batch number; e.
f. Inspection result or quality grade mark;
Inspector Code.
7.2 The whole roll of coated fabric should be packed with suitable materials. If there are special circumstances, it can be agreed upon by both parties. 7.2.1 If the whole roll of coated fabric needs to be packed according to quality grade, it shall be agreed upon by both parties. 7.3 During transportation and storage, coated fabrics should be kept away from direct sunlight, rain and snow, kept clean, and prohibited from contact with acids, alkalis, oils and organic solvents that affect the quality of the coating. It should be kept 1m away from heat sources. 7.4 Coated fabrics should be stored in a ventilated warehouse with a temperature of -15~+35C and a relative humidity of 50%~80%. Depending on the different coated fabrics, they should be placed in a tower shape or in parallel on a flat wooden board. The stacking height should not exceed 1.50m, and they should be turned over once every season. 7.5 Under the conditions specified in Articles 7.3 and 7.4, manufacturing The factory shall ensure that the waterproof rubber coated fabric shall meet the requirements of this standard within 18 months from the date of manufacture. Standard Technical NetworkbasosocomA1 Test content and scope of application
HG2291-92
Appendix A
Low-temperature bending test of rubber coated fabric
(Supplement)
The method for determining the fracture or cracking of the coating layer when the rubber coated fabric is bent 180° under specified low temperature conditions is applicable to the determination of the low-temperature performance of coated fabrics or products with a thickness of 0.1 to 2.20 mm.A2 Test principle
After the sample is placed in the specified environment, it is exposed in the low-temperature box for a certain period of time, and then a 180° bending test is performed to check the damage of the sample.
A3 Test instrument
A3.1 Low-temperature box: The low-temperature box should have a large enough working space, which should be large enough to accommodate the sample glass plate and gloves used for the test, and ensure that the bending test can be easily carried out in the low-temperature box. The temperature in the low temperature box should be controlled within ±1℃. A3.2 Glass plate: used to place all samples, with a size of about 125mm×175mm×5mm, and 2 pieces in total. A3.3 Gloves: 3 pairs, 1 pair is placed in the same temperature environment as the sample, and is used to take the sample in the low temperature box. The other 2 pairs are used at room temperature and are worn inside the cold gloves to protect the operator. A4 Samples
Three samples must be cut within 150mm from the edge of the coated fabric, and the size of the sample is 25mm×100mm. The length of the sample should be parallel to the warp of the coated fabric.
A5 Time interval from the manufacture of the coated fabric to the test A5.1 For all tests, the time interval from the date of production of the coated fabric to the test should not be less than 16h. A5.2 Before the test, the sample should be placed in a standard environment with a temperature of 20±2℃ and a relative humidity of (65±5)% or a temperature of 23±2℃ and a relative humidity of (50±5)%. The single-sided coated fabric should be kept for no less than 16 hours, and the double-sided coated fabric should be kept for no less than 24 hours. A6 Test Procedure
A6.1 Place the three samples placed in the standard environment between the glass plates. There should be enough space between the samples to allow air to pass during the placement process. Place the glass plate with the sample in an appropriate position in the low temperature box, and also place the gloves in the low temperature box, and keep them at the test temperature for 4 hours.
A6. After 24 hours, take out the samples one at a time from between the two glass plates in the low temperature box, then fold the samples 180°, and then use a 5x magnifying glass to check whether the coated surface of the samples has any breaks or cracks. For double-sided coated fabrics, check the coating layers on both sides: A7 Test results
If the coated surfaces of the three samples are free of breaks or cracks, they are qualified. If the coated surfaces of the three samples are all broken or cracked, test three more samples. If one of the additional samples is broken or cracked, it is a defective product. Standard technology exchange network m.bzsoo/comB1 Reagents and Coating Polymers
The following reagents are used for the listed coating polymers and coating laminate types
Natural rubber
Styrene-butadiene rubber
Butadiene rubber
Polyisoprene rubber
Ethylene-propylene rubber
Chloroprene rubber
Butyl rubber
Chlorosulfonated polyethylene
Polyurethane rubber
Nitrile rubber
PVC-nitrile rubber
B2 Preparation of test specimens
HG2291-92
Appendix B
Determination of degree of vulcanization|| tt||(Supplement)
Xylene
Xylene
Xylene
Xylene
Xylene
Xylene
Trimethylbenzene
Xylene
Chemical pure
Chemical pure
Chemical pure
Chemical pure
Chemical pure
Chemical pure
Chemical pure
Chemical pure
Chemical pure
Chemical pure
Chemical pure
Chemical pure
Chemical pure
Chemical pure
Chemical pure
Chemical pure
Cut 3 specimens from the sample. If the material to be tested is double-sided rubber-coated fabric, cut 6 specimens. Each sample is 100mm×100mm in size. Samples are cut evenly over the width of the sample, but samples shall not be taken within 200mm from the edge: B3 Test Procedure
When the laminated coated fabric is tested, sufficient surface fiber fabric shall be removed for testing. 1.0mL of the relevant reagent specified in B1 shall be dripped into the center of the sample, and the coated surface of the reagent shall be covered with a surface dish with a diameter of 50mm. After 120s, make sure that the fingers are dry and clean, remove the surface, and touch the coated polymer surface with the hand to check for signs of adhesiveness. B4° Result Expression
Record the signs of adhesiveness on the surface of the coated polymer. Additional Notes:
This standard was proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Shenyang Rubber Industry Products Research Institute of the Ministry of Chemical Industry. This standard was drafted by Shanghai Rubber Products Factory No. 4, and the main drafter of this standard is listed in the Stock Jianming.
From the date of implementation of this standard, the former standard HG4-398-82 "Waterproof Tape" issued by the Ministry of Chemical Industry will be invalid. Standard technology loss network wtps, som people's republic of china
chemical industry standard
waterproof rubber coated fabric
HG2291-92
edit chemical industry standard editing department
(chemical industry standardization institute)
postal code: 100013
print, chemical industry standardization institute
copyright exclusive, no reproduction
format 880×12301/16
word count 14000
first edition in december 1992
first printing in january 1993
print count 1-500
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