GB/T 17760-2019Inspection method for printed or dyed fabric surface defects (English PDF)

1 Scope

GB/T 17760-2019 is the Chinese national standard on inspection method for printed or dyed fabric surface defects, in the field of textile and leather technology. The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up - which in practice is how most foreign buyers meet it. It was issued on 4 June 2019 by the State Administration for Market Regulation; Standardization Administration of China, and has been in force since 1 January 2020. Classification: ICS 59.080.01, CCS W70. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This Standard stipulates the terms, definitions, inspection conditions, operational stipulations, inspection methods and inspection report of inspection method for printed or dyed fabric surface defects. This Standard is applicable to various kinds of bleached, dyed and printed fabric, which is produced through machine-weaving, and with the raw material of cotton, chemical fiber and other pure or blended natural yarn.

2 Normative References

The following documents are indispensable to the application of this document. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document.

GB/T 250 Textiles - Tests for Color Fastness - Grey Scale for Assessing Change in Color;

GB/T 24250 Woven Fabrics - Description of Defects - Vocabulary

3 Terms and Definitions

What is defined in GB/T 24250, and the following terms and definitions are applicable to this document.

3.1 Point Assessing Point assessing refers to the method which assesses the number and severity of fabric surface defects through point and stipulates the maximum limit.

3.2 Defect Marking Method Defect marking method refers to the method which displays the location and number of certain surface defects through marking and stipulates length discount to replace defects.

8 Double warp 2 warps parallelly woven into single yarn (strand) fabric

9 Parallel thread tightness Uneven tension when single yarn is twisted into strand

10 Loose warp Partial warps are woven into fabric under loose tension

11 Tight warp Partial warps are woven under excessive degree of twist

12 Warp hanging Partial warps are under excessive tension in fabric

13 Warp shrinkage ripple Partial warps become loose under accidental tension, which leads to ripple-shaped rolls-and-swells on fabric surface

20 Knot Knot that would affect the quality of the subsequent processes

21 Temple defects Temple or licker-in roller leads to fluff or broken rolling of yarns in fabric

22 Weft throwing Uncut yarn head that is trailed on fabric surface or on selvage

23 Improper trimming Fabric surface fluffy and has uneven wrinkles after trimming; warp and weft crossing is uneven or unthoroughly trimmed

24 Wrong fiber Weaving of strange fiber yarns

25 Grease stain Trace left on fabric after being stained with oil

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Appendix A

(normative) Specific Content of Various Fabric Surface Defects A.1 Warp-wise Defects The specific content of warp-wise defects: bamboo joint, thick warp, misaligned density, drafting misdrawn, reed mark, reed misdrawn, multi-strand warp, double warp, parallel thread tightness, loose warp, tight warp, warp hanging, warp shrinkage ripple, breaking wrap, breaking defect, sank yarn, star-shaped stitch, yarn skipping, cotton ball, knot, temple defects, weft throwing, improper trimming, wrong fiber, grease stain, oil warp, rust warp, rust stain, non-fading color wrap and non-fading color stain, water stain, dirt, pulp spot, cloth blossom, oil yarn, cat ear, concave edge, rotten edge, flower warp, long strip shadow, iron-shine, needle mark, grinding crack, improper stitch selvage, reedness, wooden roller wrinkle, corrugated edge, hair point, fleece, down pile making, thick and thin section, tool path, temple mark, strip flower, crumping wrinkle, inconsistent pattern, uneven printing and dyeing, cotton knots and impurities, deep and shallow spots, fish scale streak, missing cut, patching strip, suede patch. A.2 Weft-wise Defects The specific content of weft-wise defects: wrong weft (including thick, thin, tight and loose), uneven strips, sloughed-off weft, double weft, weft shrinkage, raw edge, uneven weaving, woven impurities, flower weft, oil weft, rust weft, non-fading color weft, coal-dust stained yarn, mispick, broken filament, wood shavings, lack of core filament, fuzziness, lathing warp shrinkage (print), brush gear. A.3 Crosspiece The specific content of crosspiece: pick-out mark, thin weft, close weft, connecting gear, cutting gear, off printing. A.4 Severe Defects The specific content of severe defects: broken hole, edge exclusion, float, thin weft, shrinkage ripple (start counting from three rows), 3 parallel hanging warps, loose warps (including separating 1 ~ 2 PCS of good yarn), non-docking rolling spindle, 1 cm and above rotten edge, woven metal impurities, lack of fleece, short fleece, pulp spot that would affect texture, mildew, improper trimming that would damage cloth back, over 10 knots or temple defects in 8 cm weft-wise full frame, exposed core yarn. A.5 Others A.5.1 In terms of warp-wise defects and weft-wise defects, some defects have

Appendix B

(normative) Description of Defect Names Please refer to Table B.1 for a description of defect names. Table B.1 -- Description of Defect Names No. Name of Defect Description of Defect