GB/T 32598-2016Textiles -- Tests for colour fastness -- Method for the instrumental assessment of staining of adjacent fabrics (English PDF)

Foreword

This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This Standard uses redrafting method to modify and adopt ISO 105-A04:1989

"Textiles - Tests for colour fastness - Part A04: Method for the instrumental of

the degree of staining of adjacent fabrics" (English version). Main technical

differences between this Standard and ISO 105-A04:1989 are as follows:

-- deleted ISO 105-F10:1989, ISO 105-J01:1989 from normative references,

added GB/T 3978, GB/T 7568 (all parts), GB/T 8424.3, GB/T 13765;

-- added relevant national standard references in Clause 4;

-- modified the operating method in 6.2 from "When the staining is uneven, it

shall be measured multiple times. When calculating, it shall use its

arithmetic mean" to "When the staining is uneven, it is recommended to

measure the darkest part of the adjacent fabric";

-- modified the measuring conditions in 6.3 to "The recommended instrument

measuring geometric conditions are (di:8°), CIE10° observer and D65 light

source. After consultation in various aspects, it may also use other

measurement conditions and CIE2° observers specified in GB/T 3978";

-- added number of calculation formulas in 6.4 and 6.5;

-- added sample description, testing instruments, testing conditions, date of

test in Clause 7.

This Standard was proposed by China Textile Industry Federation.

This Standard shall be under the jurisdiction of National Technical Committee

on Textiles of Standardization Administration of China (SAC/TC 209).

The drafting organizations of this Standard: Shanghai Entry-Exit Inspection and

Quarantine Bureau, China Textile Standard (Beijing) Inspection and

Certification Center Co., Ltd., Shanghai Aili Garment Inspection and Repair Co.,

Ltd.

Main drafters of this Standard: Sun Meirong, Yuan Zhilei, Wei Mengyuan, Cai

Jiashi, Zhou Zhiping, Liang Guobin.

Textiles - Tests for colour fastness - Method for the

instrumental assessment of staining of adjacent fabrics

1 Scope

This Standard specifies the method for the instrumental assessment of staining

of adjacent fabrics in tests for textile colour fastness.

This Standard is applicable to staining assessment in tests for colour fastness

of various textiles. It is also applicable to other textile materials.

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 3978, Standard illuminants and geometric conditions

GB/T 7568 (all parts), Textiles - Tests for colour fastness - Standard adjacent

fabrics

GB/T 8424.3, Textiles - Tests for colour fastness - Calculation of colour

differences (GB/T 8424.3-2001, eqv ISO 105-J03:1995)

GB/T 13765, Textiles - Tests for colour fastness - Specification for

STANDARD adjacent fabric of linen and ramie

3 Principle

Respectively measure the colour of adjacent fabrics that are in contact with the

sample and the colour of adjacent fabrics that are not in contact with the sample

in the colour fastness test. The colour difference between the two is calculated

in a unit of CIELAB and is converted to the number of levels used to access the

staining through formula calculation.

4 Instruments

Spectrophotometer or colorimeter: With irradiation conditions for standard

......