1 Scope
This part of GB/T 7742 specifies hydraulic method of determining textile bursting strength and bursting distension, including two kinds of procedures of determining test specimen bursting property: conditioning and soaking.
This Part uses constant rate pump device to apply hydraulic pressure. Pneumatic sealing method is specified in Part 2 of GB/T 7742.
This Part is applicable to knitted fabric, woven fabrics, nonwovens, laminated fabric and various textiles manufactured from other process.
The available data indicate: when the pressure does not exceed 80kPa, the bursting strength results obtained by adopting hydraulic and pneumatic sealing bursting apparatus have no obvious difference. This pressure range includes most of the property levels of ordinary garments. For special textiles with higher requirements for bursting pressure, hydraulic apparatus is more applicable.
2 Normative References
The following standards contain provisions which, through reference of this Part of GB/T 7742, constitute provisions of this Part. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties whose enter into agreement according to this Part are encouraged to research whether the latest editions of these documents are applied or not. For undated references, the latest edition of the reference document is applicable to this Part.
Contents
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Principle
5 Test Specimens
6 Apparatus
7 Conditioning
8 Procedure
9 Calculation and Expression of Results
10 Test Report
Appendix A (Informative) Selection of Test Areas
