1、 Testing of top stop strength

Flat pull strength is the most basic strength indicator used to test the ability of zipper teeth in work clothes to withstand lateral forces in an interlocking state, which is very similar to the actual state of use.

2、 Testing of flat tensile strength

There are various methods for measuring the strength of zippers in swimwear manufacturers, but the basic strength requirements can be tested through the following methods. From the results of these tests, the quality of zippers for different purposes can be determined.

3、 Testing of the locking strength of the pulling head

The swimwear manufacturer tests the resistance of the open end pull tube and socket to external force damage. The fixture is fixed on the left and right sides of the open end, and the pull is closed before starting the starter.

4、 Testing the tensile strength of the open end flat pull

Pull the pull head to the lower end stop, and the pull teeth are divided into two parts: left and right. Pull the chain teeth on both sides to measure the force required to stop the damage and measure the resistance force of the internal components of the pull head.

5、 Testing of bottom stop strength

The chain is interlocked with teeth, and the pull head is pulled to the upper end stop. At this time, the strength of the upper stop of the work clothes zipper can be measured. This simulates the ability of the pull head to withstand external forces when the work clothes zipper is in a grip state, when it is pulled over the upper stop or moved from the band.