This part of GB/T 13772 specifies the determination of the slippage resistance of yarns at a seam in woven fabrics via fixed load method.
This part is applicable to all apparel and upholstery woven fabrics and stretch fabrics (including those containing elastomeric yarns).
It is not applicable to industrial fabric, e.g. beltings.
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 6529-2008, ISO 139:2005, MOD)
GB/T 8629 Textiles - Domestic Washing and Drying Procedures for Textile Testing (GB/T 8629-2017, ISO 6330:2012, MOD)
GB/T 16825.1 Verification of Static Uniaxial Testing Machines - Part 1: Tension/Compression Testing Machines - Verification and Calibration of the Force-measuring System (GB/T 16825.1-2008, ISO 7500-1:2004, IDT)
GB/T 19022 Measurement Management Systems - Requirements for Measurement Processes and Measuring Equipment (GB/T 19022-2003, ISO 10012:2003, IDT)
GB/T 19981.2 Textiles - Professional Care, Drycleaning and Wetcleaning of Fabrics and Garments - Part2: Procedure for Testing Performance When Drycleaning and Finishing Using Tetrachloroethene (GB/T 19981.2-2014, ISO 3175-2:2010, MOD)
GB/T 24118-2009 Textiles - Stitch Types - Classification and Terminology (ISO 4915:1991, IDT)
3 Terms and Definitions
For the purposes of this standard, the following terms and definitions apply.
3.1
constant rate of extension testing machine
a testing machine where one clamp is fixed whilst the other is moving with a constant speed throughout the test and the test specimen extension is in proportion to the time
3.2
grab test
a kind of fabric tensile test in which only the center part of the test specimen is gripped by the clamp
3.3
yarn slippage
seam slippage
the movement, in a woven fabric of weft yarns over warp yarns (or warp yarns over weft yarns) as a result of a pulling action
Note: Seam slippage is fabric property and shall not be confused with seam strength.
3.4
warp slippage
warp yarns slipping over weft yarns, i.e. the warp yarns are at right angles to the direction of pull
3.5
weft slippage
weft yarns slipping over warp yarns, i.e. the weft yarns are at right angles to the direction of pull
3.6
seam allowance
the distance between the seam line and the adjacent edges of the material
3.7
seam opening
the maximum distance between the yarns in fabric after their slippage
GB/T 13772.2-2018 The following standards are cited: