GB/T 19390-2023 PDF English
US$350.00 · In stock · Download in 9 secondsGB/T 19390-2023: Dipped polyester cord fabric for tyres Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 19390: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 19390-2023 | English | 350 |
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Dipped polyester cord fabric for tyres
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| GB/T 19390-2014 | English | 340 |
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Dipped polyester cord fabric for tyres
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| GB/T 19390-2003 | English | 220 |
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Dipped polyester cord fabric for tyres
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GB/T 19390-2023: Dipped polyester cord fabric for tyres---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT19390-2023
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 59.100.99
CCS G 41
Replacing GB/T 19390-2014
Dipped polyester cord fabric for tyres
Issued on. MARCH 17, 2023
Implemented on. OCTOBER 01, 2023
Issued by. State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 5
4 Product classification and specifications... 6
5 Technical requirements... 7
6 Test conditions, regulations on product batching and specimen preparation methods
... 11
7 Test methods for physical and chemical properties... 12
8 Inspection methods for tissue specifications and appearance quality... 25
9 Inspection rules... 25
10 Packaging, marking, quality guarantee, transportation and storage... 26
Annex A (informative) Tensile performance test method -- CRT tensile testing machine
method... 29
Annex B (informative) Schematic diagram of pneumatic grips for tensile testing
machine... 31
1 Scope
This document specifies product classification and specifications, technical
requirements, test conditions, regulations on product batching and specimen
preparation methods, physical and chemical properties test methods, tissue
specifications and appearance quality inspection methods, inspection rules as well as
packaging, marking, quality guarantee, transportation and storage FOR dipped
polyester cord fabric for tyres.
This document is applicable to the identification and acceptance of the quality of dipped
polyester cord fabric for tyres.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 2942-2009, Rubber, vulcanized - Determination of static adhesion to textile
cord - H-pull test
GB/T 3291 (all parts), Textiles - Terms of textile material properties and test
GB/T 4666-2009, Textiles - Fabrics - Determination of width and length
GB/T 4668-1995, Textiles - Woven fabrics - Determination of number of threads per
unit length
3 Terms and definitions
For the purposes of this document, the terms and definitions defined in GB/T 3291 (all
parts) as well as the followings apply.
3.1 H-test adhesive strength
The force required to pull the cord from the H-shaped rubber-cord test piece in the
direction perpendicular to the rubber block per unit length.
3.2 dip pick-up
The dipping component of the dipped cord is separated from the white cord by chemical
method and dried to a constant weight. The ratio of the constant mass of the
impregnated substance to the constant mass of the blank cord shall be the dip pick-up.
3.5 warp density within specified width from each edge
The number of warp threads within a certain length from both sides of the cord fabric
to the cloth edge.
3.6 net weight
The mass of dipped cord fabric obtained by subtracting the mass of all packaging
materials from the mass of the cord fabric roll when leaving the dipping machine.
4 Product classification and specifications
4.1 According to physical and chemical properties, dipped polyester cord fabrics are
divided into high-modulus low-shrinkage (HMLS), high-strength high-modulus low-
shrinkage (HTHMLS) and high-dimensionally-stable high-modulus low-shrinkage
(HDS-HMLS).
4.3 Each specification of dipped polyester cord fabric can be divided into various
specifications according to the warp density. Commonly used dipped polyester cord
fabric has 15 specifications, see Table 1.
5 Technical requirements
5.1 Physical and chemical properties
5.2 Appearance indicators
5.2.1 The appearance quality of dipped polyester cord fabric is evaluated in units of
rolls. The length of each roll of dipped polyester cord fabric is calculated as 1080 m.
6 Test conditions, regulations on product batching and specimen
preparation methods
6.1 Test conditions
6.2 Regulations on product batching and specimen preparation methods
6.2.1 Take several roll cord fabrics produced from the same warp bobbin as a batch of
goods. However, if they are produced by different processes or are not continuously
Cord specifications
6.2.3 From 20 cm away from the edge of the test cloth, uniformly extract cords with a
length of 500 mm ~ 600 mm from 6 positions equidistant from each other. Remove the
weft. After mixing, it is used as the specimen of this batch of dipped polyester cord
fabric.
6.2.4 In the event of disputes between the supplier and the buyer over the test results,
the test results jointly accepted by randomly selected specimens shall prevail.
7 Test methods for physical and chemical properties
7.1 Tensile property test
7.1.1 Principle
Under the specified conditions, clamp the cord specimen between the two clamps of
the CRE electronic tensile testing machine. Stretch the specimen to fracture at the
specified tensile speed. Determine the breaking strength, constant load elongation and
breaking elongation of the specimen directly from the strength-elongation curve or data
display.
7.1.2 Test instruments
This document recommends using CRE tensile testing machine. See Annex A when
using a CRT tensile testing machine. In case of any dispute over the tensile test results,
the test results of the CRE tensile testing machine shall prevail.
7.1.3 Number of specimens
It shall be ensured that the number of effective specimens is 20.
7.1.4 Test conditions
Distance between the jaws of the upper and lower fixtures. (250±1) mm.
Tensile speed. (300±5) mm/min.
7.1.5 Operating procedures
7.1.6 Calculation
Use a testing machine that is not equipped with an automatic test data processing device.
From the stress-strain curve of the specimen, read and record the breaking strength,
breaking elongation and constant load elongation of each specimen.
7.2 H-test adhesive strength test
According to the provisions of GB/T 2942-2009.The test conditions therein are as
follows.
7.3 Dip pick-up test
7.3.1 Principle
Because the mixed solvent in 7.3.4.1 can only dissolve polyester fiber, but not rubber
compound, separate the dipped film on the dipped cord with a measured constant mass
from the blank cord. Measure the constant mass of the dipped film. The ratio of the
constant mass to the constant mass of the blank cord shall be the dip pick-up of the
dipped cord.
7.3.5 Calculation
Use formula (4) to respectively calculate the dip pick-up of two specimens. Use the
arithmetic mean to represent the dip pick-up of each batch of cords. The value of the
calculation result shall be rounded to one digit after the decimal point according to
GB/T 8170.
7.4 Hot air thermal shrinkage test
7.4.1 Test method of hot air thermal shrinker
7.4.1.3 Number of specimens
It shall be ensured that the number of effective specimens is 5.
7.4.1.4 Test conditions
Temperature. (177±2)℃. Heat treatment time. 2 min.
7.7.6 Precautions
7.7.6.1 The calculation result shall indicate the off-machine moisture regain or moisture
regain after unpacking.
7.7.6.2 In order to prevent the moisture regain of the specimen from changing during
the test, the operator shall wear cotton gauze gloves on both hands. Place the specimen
in a dry, airtight container. Weigh it as soon as possible.
8 Inspection methods for tissue specifications and appearance quality
8.1 Inspection method for tissue specifications
8.1.1 Inspection method for cloth roll length
It is carried out in the way of metering on-line in the dipping production line
(manufacturer) or calendering production line (user). The unit is m. The value of the
inspection result shall be rounded to an integer according to GB/T 8170.
8.1.4 Inspection method for weft thread density
According to the provisions on the single piece method in GB/T 14343-2008.The unit
is dtex. The value of the inspection result shall be rounded to an integer according to
GB/T 8170.
9 Inspection rules
9.1 The physical and chemical properties indicators are sampling inspections. The
sampling methods shall be carried out according to the regulations in 6.2.1 and 6.2.2.
9.2 Appearance indicators are all inspections. The inspection items in Table 6 are all
assessment items. Carry out inspection according to the inspection method specified in
8.2.If there is one item failure, the product shall be rejected.
9.3 The buyer can inspect the product provided by the manufacturer according to the
provisions of this Standard within 12 months after the product is dipped. If the
inspection is not carried out within the time limit, it is deemed that the buyer has
approved the inspection results indicated in the quality guarantee issued by the seller.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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