quality control

Zipper Strength Test Method

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  Puller attachment test

  For a full zip closure. When a force is applied to the zipper sheet and the zipper button part below it, the tension resistance of the zipper button can be measured. In addition to the 90° measurement method shown in the figure on the right, another method is the 45° measurement method.

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  Top stop holding strength test

  Fix the bottom end of the zipper, pull the pull button to the top of the zipper, and measure the amount of tension resistance by applying force to the pull button on the top stop of the zipper.

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  Lateral strength of the pin & box test

  The lower end opening part of the zipper is fixed to the tensile tester (only the lower end opening part as shown in the figure), so that the first zipper tooth at the lower end of the zipper is on a horizontal line with the edge of the clamp, so that its resistance can be measured tension.

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  Lateral strength of china test (per2.54cm)

  Pull the zipper, use the vertical angle of the zipper direction and the force of the fixed speed to act on the zipper to measure the tensile strength.

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  Bottom stop holding strength test

  Pull the zipper to the bottom of the zipper, and two flat chains, one left and one right, can measure the bottom end tension.

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  Slider lock strength test

  The zipper buckle is locked in the middle of the zipper, and the two single zippers that are not engaged are one left and one right, and the zipper strength and zipper resistance can be tested.