GB/T 4802.2-2008Textiles -- Determination of fabric propensity to surface fuzzing and to pilling -- Part 2: Modified Martindale method (English PDF)

Foreword

GB/T 4802 " Textiles - Determination of fabric propensity to surface fuzzing and to

pilling" is divided into 4 parts.

- Part 1. Circular locus method;

- Part 2. Modified Martindale method;

- Part 3. Pilling box method;

- Part 4. Random rolling method.

This Part is part 2 of GB/T 4802.

This Part is modified in relation to ISO 12945-2.2000 Textiles - Determination of fabric

propensity to surface fuzzing and to pilling - Part 2. Modified Martindale method

(English edition).

Differences from ISO 19.945-2.2000 are as follows.

- Relative provisions on grade and comparison are added in clause 10.

- Article "j) after pretreatment, compare the sample with the samples that are not

treated; the assess grading of fuzzing, pilling or pills;" is added in clause 12. The

serial numbers after that are increased sequentially.

This Part replaces GB/T 4802.2-1997 "Textiles - Determination of fabric propensity to

surface fuzzing and to pilling - Part 2. Modified Martindale method "Differences from

GB/T 4802.2 1997.

1 Standard name is modified as " Textiles - Determination of fabric propensity to

surface fuzzing and to pilling - Part 2. Modified Martindale method".

2 Provisions in Scope does not specify the applicable fabric.

3 Clause 3 Terminology and Definition is added.

4 Description of the modified Martindale abrasion testing machine is added; and

diagrams of devices such as pilling table, clamping ring, specimen holder body,

additional loading weight and auxiliary device are added. Sample size in the

sample holder is adjusted correspondingly; the diameter is changed from 40mm

to 50140+ mm.

5 Grade-box's specific requirements are added and illustrated in figure.

6 The pad in specimen holder is change from polyurethane foam to weaving felt

fabric; The corresponding clauses that whether use pad according to sample

weight are deleted;

7 Abradant is changed from single test fabric to 2 abradants – the fabric under test

AND the wool standard abradant; and wool standard abradant shall be adopted

for decorative fabric.

8 Sample quantity is change from 4 sets to 3 sets of specimens.

9 As for loading, single mass loading is changed to 2 kinds of mass loadings that

are chosen according to test fabric application.

10 Provision of conducting grade-assessment after 1000 times of abrasion is

deleted; test procedure of adopting stages to conduct the abrasion and

grade-assessment is specified;

11 State description of fuzzing and pilling of specimens is added;

grade-assessment mode is changed FROM comparing samples for

grade-assessment INTO according to visual description for

grade-assessment;

12 Annex A "Pilling experimentation classification" is added.

Annex A of this Part is the normative.

This Part was proposed by China Textile General Association.

This Part shall be under the jurisdiction of Basic Standard Branch (SAC/TC 209/SC 1)

of National Textile Standardization Technical Committee.

Drafting organizations of this Part. Zhong Fang Biao (Beijing) Inspection Certification

Center Co., Ltd. and Ningbo Textile Instrument Plant.

Chief drafting staffs of this Part. Zhou Shixiang, Hu Junwei.

The previous editions replaced by this Part are as follows.

- GB 4802.2-1984, GB/T 4802.2-1997.

Textiles - Determination of fabric propensity to surface

fuzzing and to pilling –

Part 2. Modified Martindale method

1 Scope

This Part of GB/T 4802 specifies a method for determination of the resistance to

pilling and surface change of textile fabrics using a modified Martindale method.

2 Normative references

The following normative documents contain the provisions which, through reference in

this text, constitute the provisions of this Part of GB/T 4802. For dated references, the

subsequent amendments or revisions of these publications do not apply. However,

parties who enter into an agreement based on this Part of GB/T 4802 are encouraged

to investigate the possibility of applying the most recent editions of the normative

documents indicated below. For undated references, the latest edition of the

normative document referred to applies.

GB/T 6529 Textiles - Standard atmospheres for conditioning and testing (GB/T

6.529-2008, ISO 139.2005, MOD)

GB/T 21196.1 Textiles - Determination of the abrasion resistance of fabrics by the

Martindale method - Part 1. Martindale abrasion testing apparatus (ISO 12947-1.1998,

MOD)

3 Terms and definitions

For the purposes of this Part of GB/T 4802, the following terms and definitions apply.

4 Principle

A circular test specimen is passed over a friction surface comprising the same fabric

or, when relevant, a wool abradant fabric, at a defined force in the form of a Lissajous

figure, with the test specimen able to rotate easily around an axis through its centre,

perpendicular to the plane of the test specimen. Fuzzing and pilling are assessed

visually after defined stages of rub testing.

5 Apparatus

7 Conditioning and testing atmosphere

The standard temperate atmosphere for conditioning and testing textiles as defined in

GB/T 6529 shall be used.

8 Preparation of test specimens