GB/T 20039-2026Cotton and polyester blended yarn-dyed fabric (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

This document replaces GB/T 20039-2005 "Polyester and Cotton Blended Yarn-dyed Fabrics". Compared with GB/T 20039-2005, except for structural adjustments and... Aside from editorial changes, the main technical changes are as follows.

a) The scope has been changed (see Chapter 1, Chapter 1 of the 2005 edition);

b) Added terms and definitions (see Chapter 3);

c) Product categories and specifications have been removed (see Chapter 3 of the 2005 edition);

d) The overview of assessment items has been removed (see section 4.1 of the 2005 edition);

e) The grading rules have been changed (see 4.2, 2005 version 4.2);

Requirements for color fastness to stains and color fastness to heat pressing (see Table 1, Table 2 of the 2005 edition);

g) The indicators for unit area mass deviation rate, tear strength, seam separation degree, pilling, water fastness, and light fastness have been added. (See Table 1);

h) The scoring criteria for width deviation, color difference, and localized fabric defects have been revised (see Table 2, Table 3 in the 2005 edition);

i) Regulations for scattered fabric defects have been added (see Table 2);

j) Added regulations on dummy cutting and assembly (see 4.4.2);

k) The test methods for fiber content, dimensional change after washing, color fastness to soaping, and color fastness to heat pressing were modified (see 5.2, 5.5,...). (5.10, 5.13; 6.10, 6.2, 6.5, 6.8 of the 2005 edition)

l) Additional tests were added for unit area mass deviation rate, tear strength, seam separation degree, pilling, water fastness, and light fastness. Methods (see 5.3, 5.7, 5.8, 5.9, 5.14, 5.15);

m) The method for scoring localized fabric defects has been changed (see Appendix A, Chapter 5, 2005 edition);

n) The inspection rules have been changed (see Chapter 6, 7.2, 7.3, and 7.4 of the 2005 edition);

o) Changes were made to the markings, packaging, transport, and storage (see Chapter 7, and Chapters 8, 10, and 11 of the 2005 edition);

p) The package (item) requirement has been removed (see Chapter 9 of the 2005 edition).

1 Scope

This document defines the terminology for cotton and polyester blended yarn-dyed fabrics, specifies requirements, inspection rules, and procedures for marking, packaging, transportation, and storage. The corresponding experimental methods are described.

This document applies to woven yarn-dyed fabrics made from a blend of cotton and polyester fibers. The yarn-dyed fabrics are made from a blend of cotton and polyester yarns. For woven products, please refer to the guidelines.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies to this document.

GB/T 250 Textiles - Tests for color fastness - Assessment of color change - Gray scale

GB/T 2828.1-2012 Sampling Procedures for Inspection by Attributes - Part 1: Lot-by-lot Inspection Sampling Indexed by Acceptable Quality Limit (AQL) plan (Sulfuric acid process)

GB/T 3917.1 Textiles - Tear properties of fabrics - Part 1: Determination of tear strength by impact pendulum method

GB/T 3920 Textiles - Tests for color fastness - Color fastness to rubbing

GB/T 3921-2008 Textiles - Tests for color fastness - Color fastness to washing

GB/T 3922 Textiles - Tests for color fastness - Color fastness to perspiration

GB/T 3923.1 Textiles - Tensile properties of fabrics - Part 1: Determination of breaking strength and elongation at break (strip method)

GB/T 4666 Textiles - Determination of Length and Width of Fabrics

GB/T 4668 Determination of density of woven fabrics

GB/T 4669-2008 Textiles - Determination of mass per unit length and mass per unit area of woven fabrics

GB/T 4802.2-2008 Textiles - Determination of pilling and fuzzing properties of fabrics - Part 2: Modified Martindale method

GB/T 4841.3 Standard Depth Color Chart for Dyeing 2/1, 1/3, 1/6, 1/12, 1/25

GB/T 5296.4 Instructions for use of consumer products - Part 4: Textiles and clothing

GB/T 5713 Textiles - Tests for color fastness - Water fastness

GB/T 6152-1997 Textiles - Tests for color fastness - Heat and pressure fastness

GB/T 8170 Rules for rounding off numerical values and the representation and determination of limiting values

GB/T 8427-2019 Textiles - Tests for color fastness - Color fastness to artificial light. Xenon arc

GB/T 8628 Textiles - Preparation, marking and measurement of fabric samples and garments for the determination of dimensional changes

GB/T 8629-2017 Home Washing and Drying Procedures for Textile Testing

GB/T 8630 Determination of dimensional changes of textiles after washing and drying

GB/T 14801 Test methods for weft skew and weft bow of woven and knitted fabrics

GB 18401 National Basic Safety Technical Specifications for Textile Products