GB/T 8628-2013Textiles -- Preparation, marking and measuring of fabric specimens and garments in tests for determination of dimensional change (English PDF)

Foreword

This standard is drafted according to the rules specified in GB/T 1.1-2009.

This standard replaces GB/T 8628-2001 Textiles - Preparation, marking and measuring of

fabric specimens and garments in tests for determination of dimensional change.

Compared with GB/T 8628-2001, the main technical changes of this Standard are as

follows.

— The statement of application scope is revised (see Clause 1; Clause 1 in

Edition-2001).

— Reference to GB/T 8170-1987 is deleted. References to GB/T 4666, GB/T 8629,

GB/T8631, GB/T 19981, ISO 15797 and FZ/T 20021 are added (see Clause 2, 6.2,

Clause 9; Clause 2 and Clause 10 in Edition-2001).

— The equipment generating normal atmosphere is deleted (see 4.4 in Edition-2001).

— Sampling requirements for knitted fabric are added (see 6.1).

— Pre-conditioning for specimens is deleted. Relevant marker is adjusted to be after

conditioning (see 6.3 and 6.4; 6.4 in Edition-2001).

— Operational steps for cloth hanging and conditioning are added (see 7.1.4).

— Pants measurement positions are added (see 7.2.2).

— Statement about treatment is added in the test report (see Clause 11).

— Annex "measurement of bra, knitting socks, hats and gloves" is deleted (see Annex

B in Edition-2001).

Using re-drafting method, this standard modifies and adopts ISO 3759.2011 Textiles -

Preparation, Marking and Measuring of Fabric Specimens and Garments in Tests for

Determination of Dimensional Change (English version).

The main differences between this standard and ISO 3759.2011 are as follows.

— Table of Contents and Foreword of international standard are deleted;

— International standards in normative reference are replaced with corresponding

national standards or industrial standards (see Clause 2).

— Add pants measurement positions (see 7.2.2).

— Add code D of dimensional change-rate in calculation formula and result rounding

requirements (see Clause 10).

Textiles - Preparation, marking and measuring of fabric

specimens and garments in tests for determination of

dimensional change

1 Scope

This Standard specifies a method for the preparation, marking and measuring of textile

fabrics, garments and fabric assemblies for use in tests for assessing dimensional change

after a specified treatment, e.g. washing, dry cleaning, soaking in water and steaming,

following the procedures in GB/T 8629, GB/T 19981, GB/T 8631, ISO 15797 and FZ/T

20021.

This Standard is applicable to woven and knitted fabrics, and made-up textile articles. The

procedures are not applicable to certain upholstery coverings.

2 Normative references

The articles contained in the following documents have become part of this document

when they are quoted herein. For the dated documents so quoted, all the modifications

(including all corrections) or revisions made thereafter shall be applicable to this

document.

GB/T 4666 Textiles - Fabrics - Determination of width and length (GB/T 4666-2009,

ISO 22198.2006, IDT)

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

6529-2008, ISO 139.2005 MOD)

GB/T 8629 Textiles - Domestic washing and drying procedures for textile testing

(GB/T 8628-2001, ISO 3759.2011, MOD)

GB/T 8631 Textiles - Determination of dimensional changes of fabrics induced by

cold-water immersion (GB/T 8631-2001, ISO 7771.1985, eqv)

GB/T 19981.1 Textiles - Professional care, drycleaning and wetcleaning of fabrics

and garments - Part 1.Assessment of performance after drycleaning and finishing

(GB/T 19981.1-2005, ISO 3175-1.1998, MOD)

GB/T 19981.2 Textiles-Textiles - Professional care, drycleaning and wetcleaning of

fabrics and garments Part 2.Procedure for testing performance when drycleaning and

finishing using tetrachloroethene (GB/T 19981.2-2005, ISO 3175-2.1998, MOD)

of one leg to the bottom of the other leg via the crotch;

d) width at waist;

e) width at bottom of leg;

f) width of leg halfway between crotch and bottom of leg, i.e. knee (omit if leg length is

short);

g) Thigh. across measure along the direction perpendicular to the trouser length from

the bottom of crotch to the side edge of trouser.

h) Trouser length. along side seam, measure from waist upper-mouth to the

foot-mouth, smoothly and vertically.

8 Flat made-up textile articles

Follow the procedure described in 7.1, using the following measuring positions.

a) overall length;

b) overall width.

NOTE 1.Heavy drapes can stretch during hanging and shrink during washing. Methods for assessing

dimensional change do not, in general, include dimensional changes occurring under tension.

......