Flame-resistant water-proof fabrics and terpaulines coated with PVC on both sides
Some standard content:
GB/T 16741
This standard is formulated with reference to [S08095-1990 Technical Conditions for Polyvinyl Chloride Coated Fabrics for Synchronous Use] and International Railway Union UIC806R Technical Specifications for Synchronous Use of Cargo Covers. The elongation at break, water permeability resistance, water permeability resistance of heat-sealed seams, tensile strength of E, F, and G products, and tensile strength of heat-sealed seams and tensile strength of fluffy rings of G products in this standard are equivalent to the technical indicators in the TJIC 806 R standard; while the tensile strength of D~G products incorporates the technical indicators of IS08095. The fusion performance of this standard is equivalent to the technical indicators in ISO8095. This standard is proposed by China Packaging General Office. This standard is under the jurisdiction of the National Packaging Standardization Technical Committee. This standard is jointly drafted by the National Packaging Product Quality Supervision and Inspection Center (Jinan) and Yinqiu Rubber and Plastic Products Co., Ltd. The main drafters of this standard are Wang Xingdong, Yuan Huachuan, Liu Hongxin, Zhou Jiayan and Sun Yongshun. 1 Scope
National Standard of the People's Republic of China
Flame-resistant and water-proof fabrics and terpaulines conted with PVC on both sides GB/T 16741.:1997
This standard specifies the product types, specifications, technical requirements, test methods, inspection rules and markings, packaging, transportation and storage of double-sided coated polyvinyl chloride flame-retardant waterproof fabrics and tarpaulins (hereinafter referred to as coated fabrics and tarpaulins). This standard is applicable to coated fabrics and tarpaulins with polyvinyl chloride resin coated on both sides and based on fabrics such as vinylon fiber, nylon fiber, polyester fiber and glass fiber.
Citation Difficulty
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest version of the following standards. GB5454-85 Oxygen index method for determination of burning performance of textile fabrics GB/T12588-90 Rapid melting test method for polyoxyethylene coating layer of plastic coated fabrics GB/T13489-92 Determination of burning performance of rubber coated fabrics HG/T 2-162-65 Low temperature impact compression test method for plastics HG/T2580-1994 Determination of tensile strength and elongation at break for rubber or plastic coated fabrics HG/T2581-1994 Determination of tear resistance of rubber or plastic coated fabrics HG/T2582-1994 Determination of water permeability resistance of rubber or plastic coated fabrics 3 Product types and specifications
3.1 Chuzun fabric types
Coated fabrics are divided into A~G categories according to their tensile strength (see Table 1). Table 1 Coated fabric type
Tensile strength (warp and weft)
N/50 mm2
3.2 Tarpaulin specifications
Tarpaulin specifications are shown in Table 2.
National Technical Supervision Commission approved c on 1997-02-21
1997-07-01 implementation
GB/T 16741—1997
Table 2 Tarpaulin specifications
Note: Tarpaulins with special specifications and other special requirements can be agreed upon by both the supplier and the buyer. Technical requirements
4.1 Appearance
The coating of coated fabric and tarpaulin should be basically uniform and without obvious defects such as stagnation, holes, lumps, degumming, bubbles, dead caps and damage. The reverse sewing of tarpaulin should be semi-straight, without loose needles or broken threads, and without floating threads. The back stitching at the starting and stopping points should not be less than three stitches. The thin loops of the tarpaulin should be evenly distributed and close to the ropes. The coating fabric in the area with the tarpaulin loops should be at least three layers. The heat-sealed seams of the tarpaulin should be smooth. There should be no obvious wrinkles, holes or other defects. The color of the product can be agreed upon by both the supplier and the buyer. 4.2 Dimensions and deviations
4.2.1 Covering fabric
4.2.7.1 The length of each covering fabric is 100 m, with a deviation of ±20 cm. It is allowed to have broken ends, but the number shall not exceed one, and the length of each section shall not be less than 10 m.
4.2.1.2 Width deviation: ±20 mm. 4.2.2 Tarpaulin dimensions and deviations
Tarpaulin dimensions and deviations are shown in Table 3.
Table 3 Tarpaulin dimensions and deviations
Length and width
Ribbon width 1
Area spacing
Heat seal width
Edge width
Needle/10m
1) Whether the tarpaulin has ribs or not can be sized according to user requirements
Change to Table 2
4.3 Physical and chemical properties
GB/T 16741-1997
Physical, mechanical and chemical properties of coated fabrics and reinforced fabrics must be specified in Table 4. Table 4 Physical, mechanical and chemical properties of coated fabrics and sewn fabrics
Tensile strength (warp, weft)
N/50 mm
Tear resistance (warp, weft)
Tensile strength of heat-sealed seams (warp, linear)
Tensile strength of fluff loops (warp, weft)
Peeling strength of heat-sealed chains (warp, weft)
Elongation at break (warp, weft)
Water permeability resistance
Blocking resistance (25 C±1r)
Fusion performance
Heat-seamed anti-water permeability
Flame burning time
Load index
Anti-water permeability
Water immersion
Heat aging
Test method
Stop plugging performance
Flame burning time
No cracks larger than 1 mm are allowed
No new cracks or holes are allowed in the bending part20
No cracks larger than 1 mm are allowed
When testing the physical, mechanical and chemical properties of coated fabrics and tarpaulins, the specimens should be placed in an environment of 23°C ± 2°C and relative humidity (50 ± 5)% for at least 4 hours, and the test should be carried out in this environment. 5.1 Appearance inspection
Visual inspection under light or daylight.
5.2 Determination of various dimensions
GB/T 16741—1997
values, the length of the coated fabric is accurate to 1cm, the width is accurate to 1mm. The length and width of the tarpaulin are accurate to 1cm respectively. 5.2.2 Use a ruler with a graduation value of 1mm to measure the spacing between the centers of adjacent tarpaulin circles. Take the arithmetic mean of at least five spacings and calculate to an accuracy of 1mm.
5.2.3 Other dimensions are measured five times at equal intervals with a ruler with a graduation value of 1mm. Take the arithmetic half-mean and retain the integer. 5.3 The determination of tensile strength and elongation at break is carried out according to HG/T2580. The width of the specimen is 50mm, the length is 350mm, the distance between the clamps is 200mm±1mm, and the pulling rate is 100 mm/min±10mrn/min. Calculation results, tensile strength is accurate to 1N, and elongation at break is retained as an integer. 5.4 Determination of tearing resistance
According to HG/T2581, double tongue single tearing method is used, the sample size is 225mm long, 75mm ± 0.5mm wide, 5.5 Determination of water permeability performance
According to method A1 in HG/T 2582. 5.6 Determination of flame combustion
According to the first chapter of GB/T13489.
5.7 Determination of oxygen index
According to GB5454.
5.8 Determination of cold resistance
According to HG/T2-162. Take 50mm×6mm samples, three pieces in each of the warp and weft directions, place the samples in an environment of -25℃ ± 1℃ for 5 minutes, and then carry out impact test. After the test, no cracks with a length of more than 1mm shall be generated on the surface of each sample. 5.9 Determination of fusion performance
Perform according to GB/T12588.
5.10 Heat aging test
Cut three samples of 300mm×300mm, hang them in an aging box at 100℃±2℃ for 144h, take them out, and cool them to room temperature. Carry out water permeability resistance and flame burning time tests according to the provisions of 5.5 and 5.6 of this standard, and cold resistance test according to the provisions of 5 and 8 in an environment of 15℃±1℃.
5.11 Water immersion test
Cut three samples of 300mm×300mm, immerse them completely in room temperature water, change the water every 24h, immerse them for 114h, take them out. Bake them in an oven at 100C±2℃ for 1h, take them out and let them cool to room temperature. Carry out the water permeability resistance and flame burning time test according to the provisions of 5.5.5.6 of this standard. Carry out the cold resistance test according to the provisions of 5.8 in an environment of 15℃±1℃. 5.12 Determination of tensile strength of heat-sealed seams
Carry out according to HG/T2580. Cut the warp perpendicular to the heat-sealed bond direction.Five specimens in each direction. The width of the specimen is 50mm±0.5mm. The length of both sides of the heat-sealed seam should not be less than 150mm. The tensile rate is 100mm/min±10mm/min, and the distance between the clamps is 200mm±1mm. The results are expressed as the arithmetic mean of the five specimens in the warp and weft directions, and the calculation is accurate to 1 N. 5.13 Determination of the tensile strength of the awning
The width of the specimen is 100mm±1mm, and the length is 300mm±1mm. The awning should be located in the middle of the specimen width direction. The chain line of the specimen hemming should be appropriately long and three knots should be tied. Take five specimens in each direction of the warp and weft. Fix the awning of the specimen on the hook of the mobile clamp, and clamp the other end in the fixed clamp. The tensile rate is 100mm/min±10mm/min, and the distance between the clamps is 200mm±1mm. Record the maximum load when the awning is loose or the awning is damaged. The results are expressed as the arithmetic mean of the five specimens in the warp and weft directions, and the calculation is accurate to 1N. 5.14 Determination of peeling force of heat-sealed seams
The sample length is at least 200 mm, the width is 30 mm ± 0.2 mm, and there are three pieces in each direction of warp and weft. Peel off 50 mm at one end of the sample and test at a rate of 100 mm/min ± 10 mm/min. The effective peeling length of the sample is at least 70 mm, and the peeling force curve is recorded. The median result of the curve is expressed as the arithmetic mean of the three samples in the warp and weft directions, and the calculation is accurate to 0.1V. 5.15 Determination of water-permeability resistance of heat-sealed seams
According to HG/T2582 method A1, the heat-sealed seam should be located in the middle of the sample. During the test, observe whether the heat-sealed seam and its fixed edge are leaking
GB/T167411997
Note: Among the items of physical, mechanical and chemical properties, the items without "heat-sealed seam" are: The samples are not cut at the heat-sealed part. 6 Inspection rules
6.1 Coated fabrics and tarpaulins must be inspected and qualified by the quality inspection department of the manufacturer and accompanied by a product certificate before they can leave the factory. 6.2 Coated fabrics and tarpaulins are inspected in batches. Coated fabrics produced continuously with the same formula, the same materials and technology, but not more than 100 rolls are considered a batch; tarpaulins processed from a batch of coated fabrics with the same process, but not more than 50 pieces are considered a batch. 6.3 Factory inspection
The appearance and size of coated fabrics and tarpaulins should be inspected by batch, roll and piece. The appearance and size of coated fabrics should meet the requirements, otherwise, the roll of product is judged as unqualified. The appearance and size of tarpaulins should not exceed two unqualified items, otherwise, the product is judged as unqualified. 6.4 Type inspection
6.4.1 Sampling
6.4.1.1 Randomly select three rolls of coated fabric products that have passed the factory inspection as samples. At least one layer of the surface of each roll shall be removed, and 1m of each roll shall be taken as samples.
6.4.1.2 Randomly select three pieces of warp fabric products that have passed the factory inspection as samples. From one of the pieces, take the actual width of the tarpaulin as the sampling width and cut 2m (including the heat-sealed chain part) in the length direction as a sample. 6.4.2 Type inspection
Type inspection includes all technical requirements in this standard and shall be carried out at least once a year. However, type inspection shall also be carried out in any of the following circumstances.
a) When the formula, process, or raw materials are changed, which may affect the product quality b) When the production is stopped for a long time and then resumed.
6. 4. 3 Judgment rules
6.4.3.1 Judgment rules for coated fabrics
a) In terms of appearance, length and width, no more than one item of each roll of product shall be unqualified: otherwise, the roll of product shall be judged as unqualified product:
If any roll of the sampled roll is unqualified, six rolls shall be randomly selected from the original batch of products and re-inspected for appearance, length and width; if three or more rolls are unqualified, the batch of products shall be judged as unqualified products. b) The physical, mechanical and chemical properties of the product shall all meet the requirements of the standard, otherwise, double samples shall be randomly selected from the original batch of products to re-inspect the unqualified items. If the re-inspection is still unqualified, the batch of products shall be judged as unqualified products. c) When the products are qualified according to a) and b), the batch of products shall be judged as qualified products. 6.4.3.2 Tarpaulin determination rules
a) In the appearance and dimensional deviation items, the number of unqualified items for each product shall not exceed three, otherwise, the product shall be judged as unqualified.
If one of the three products sampled is unqualified, six products shall be randomly selected from the original batch of products and re-inspected for appearance and dimensional deviation; if three or more products are unqualified, the batch of products shall be judged as unqualified. b) The physical, mechanical and chemical properties of the product shall all meet the requirements of the standard; otherwise, double samples shall be randomly selected from the original batch of products and re-inspected for unqualified items. If the re-inspection is still unqualified, the batch of products shall be judged as unqualified. c) When the products are qualified according to a) and b), the batch of products shall be judged as qualified. 7 Marking, packaging, transportation, storage
7.1 The product should be accompanied by a product certificate, indicating the product name, type, specification, quantity, production date, manufacturer, this standard and base fabric material.
7.2 The product should be packed in good condition.
CB/T16741—1997
7.3 Coated fabrics and tarpaulins should not be hooked during transportation to avoid damage. 7.4 Coated fabrics and tarpaulins should be stored in a clean, cool warehouse or pavilion; if the user has special requirements for the marking, folding and packaging of the fabric, the supply and demand parties shall negotiate to resolve the problem.1 Rules for judging coated fabrics bzxZ.net
a) In the appearance, length and width, no more than one item of each roll of product shall be unqualified: otherwise, the roll of product shall be judged as unqualified.
If any roll of the sampled roll is unqualified, six rolls shall be randomly selected from the original batch of products and re-inspected for appearance, length and width; if three or more rolls are unqualified, the batch of products shall be judged as unqualified. b) The physical, mechanical and chemical properties of the product shall all meet the requirements of the standard, otherwise, double samples shall be randomly selected from the original batch of products to re-inspect the unqualified items. If the re-inspection is still unqualified, the batch of products shall be judged as unqualified. c) When the product is qualified according to a) and b), the batch of products shall be judged as qualified. 6.4.3.2 Rules for judging tarpaulins
a) In the appearance and size deviation items, no more than three items of each product shall be unqualified, otherwise, the product shall be judged as unqualified.
If one of the three products sampled is unqualified, six products should be randomly sampled from the original batch of products and re-inspected for appearance and dimensional deviation; if three or more products are unqualified, the batch of products shall be judged as unqualified. b) The physical, mechanical and chemical properties of the products shall all meet the requirements of the standard; otherwise, double samples shall be randomly sampled from the original batch of products and re-inspected for unqualified items. If the re-inspection is still unqualified, the batch of products shall be judged as unqualified. c) When the products are qualified according to a) and b), the batch of products shall be judged as qualified. 7 Marking, packaging, transportation, storage
7.1 The product shall be accompanied by a product certificate indicating the product name, type, specification, quantity, production date, manufacturer, this standard and base fabric material.
7.2 The product shall be tied in good condition.
CB/T16741—1997
7.3 Coated fabrics and tarpaulins should not be hooked or tied during transportation to avoid damage. 7.4 Coated fabrics and tarpaulins should be stored in a clean, cool warehouse or pavilion. If the user has special requirements for the marking, folding and packaging of the fabric, the supply and demand parties shall negotiate to resolve the issue.1 Rules for judging coated fabrics
a) In the appearance, length and width, no more than one item of each roll of product shall be unqualified: otherwise, the roll of product shall be judged as unqualified.
If any roll of the sampled roll is unqualified, six rolls shall be randomly selected from the original batch of products and re-inspected for appearance, length and width; if three or more rolls are unqualified, the batch of products shall be judged as unqualified. b) The physical, mechanical and chemical properties of the product shall all meet the requirements of the standard, otherwise, double samples shall be randomly selected from the original batch of products to re-inspect the unqualified items. If the re-inspection is still unqualified, the batch of products shall be judged as unqualified. c) When the product is qualified according to a) and b), the batch of products shall be judged as qualified. 6.4.3.2 Rules for judging tarpaulins
a) In the appearance and size deviation items, no more than three items of each product shall be unqualified, otherwise, the product shall be judged as unqualified.
If one of the three products sampled is unqualified, six products should be randomly sampled from the original batch of products and re-inspected for appearance and dimensional deviation; if three or more products are unqualified, the batch of products shall be judged as unqualified. b) The physical, mechanical and chemical properties of the products shall all meet the requirements of the standard; otherwise, double samples shall be randomly sampled from the original batch of products and re-inspected for unqualified items. If the re-inspection is still unqualified, the batch of products shall be judged as unqualified. c) When the products are qualified according to a) and b), the batch of products shall be judged as qualified. 7 Marking, packaging, transportation, storage
7.1 The product shall be accompanied by a product certificate indicating the product name, type, specification, quantity, production date, manufacturer, this standard and base fabric material.
7.2 The product shall be tied in good condition.
CB/T16741—1997
7.3 Coated fabrics and tarpaulins should not be hooked or tied during transportation to avoid damage. 7.4 Coated fabrics and tarpaulins should be stored in a clean, cool warehouse or pavilion. If the user has special requirements for the marking, folding and packaging of the fabric, the supply and demand parties shall negotiate to resolve the issue.
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