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中文版Open end, closed end PVC
specification：Technical specifications of 8#PVC airtight zipper
Testing item
Unit
Enterprise Standard
Test result
Remark
Slider fastener breadth
mm
70mm
70mm
Chain width
mm
7mm
7.03mm
Chain tension strength
N/in
Minimum: 400N/in
520N/in
UK Standard: 355N/in
Slider action docking
N
Minimum: 175N
175N
Slider block break strength
N
Minimum: 600N
690N
Airproof performance test
conformed
Compare with sample
Slider action closing
N
Maximum: 75N
75N
Slip strength
N
Maximum: 55N
40-50N
Reciprocating times
Cycle
Minimum: 300times
conformed
Note:
1) The chain tension strength testing method is to select a section of the zipper not less than 60mm and nip 25mm from the section. The distance from top to chain element should not exceed 10mm and the slide velocity should be 110mm/min.
2) Reciprocating tests require the zipper length within 1.0m and slide velocity within 10-15m/min.
3) Please specify your special requirements for usage when ordering the products.