FZ/T 01031-2016Knitted fabric and elastic woven fabric - Determination of maximum force to seam rupture and elongation - Grab method (English PDF)

Foreword

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

This Standard replaces FZ/T 01031-1993 Knitted fabric and elastic woven

fabric - Determination of maximum force to seam rupture and elongation - Grab

tensile method. Compared with FZ/T 01031-1993, the main changes are as

follows:

- MODIFY the standard title, from "grab tensile method" to "grab method";

- DELETE the reference to GB/T 5708 and GB/T 11050 in Clause 2 -

Normative references, and ADD the reference to GB/T 3923.2;

- MODIFY the requirements of Clause 5 - Equipment, to meet the

requirements of GB/T 3923.2;

- ADD the sewing and specimen cutting equipment required for 5.2 and 5.3

of this Standard;

- DELETE "Clause 6 - Requirements for sampling" of the old standard;

- SIMPLIFY the requirements of Clause 6 - Conditioning and test atmosphere,

and DELETE the specification on the conditioning time of specimens;

- MODIFY the sample sewing requirements in 7.2 of Clause 7 - Specimen

TO that the sewing requirements shall be determined according to the

relevant product standards or agreements between the parties concerned;

- DELETE steps 8.1 and 8.4 in Clause 8 of the old standard;

- DELETE the optional tensile speed of 200 mm/min in 8.2, and ADD the

annotation description of other test speeds;

- REFINE the cause of specimen rupture in 8.7, and SPECIFY the choice of

results;

- MODIFY the formula in 9.2 to the calculation method of seam elongation

dominated by loose clamping;

- ADD "a) the serial number of this Standard" in Clause 10 - Test report;

- DELETE Annex A and Annex B.

This Standard was proposed by China National Textile and Apparel Council.

This Standard shall be under the jurisdiction of Subcommittee on Basic

Knitted fabric and elastic woven fabric -

Determination of maximum force to seam rupture and

elongation - Grab method

1 Scope

This Standard specifies two tensile test methods to determine the seam

strength and elongation of the straight-line seam type of textiles. Method A is

the horizontal tensile method; Method B is the vertical tensile method.

This Standard applies to knitted fabrics and elastic woven fabrics.

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 6529 Textiles - Standard atmospheres for conditioning and testing

GB/T 8170 Rules of rounding off for numerical values & expression and

judgement of limiting values

GB/T 3923.2 Textiles - Tensile properties of fabrics - Part 2: Determination of

maximum force using the grab method

3 Terms and definitions

For the purpose of this document, the following terms and definitions apply.

3.1

wale (warp) seam

A seam sewed perpendicular to the fabric in the wale (warp) direction.

3.2

course (weft) seam

pretension shall be kept lower than the pretension given in 8.3.1 during the

entire process of installing the specimen and closing the clamps.

9 Calculation and presentation of results