DETECTION METHOD
Detection method of zippers
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Tension Binding Force
The tension acts on the bottom of the puller and the combined puller head.  In addition to the measurement method of 90° as shown in the figure, there are other methods of 45°.
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Check poewr on
Secure the lower part of the bite zipper and pull the pull head up.
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Self-locking force
Lock the puller head in the middle of the teeth and pull the chains left and right in their respective directions.
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Between strong
Stretch the bite zipper horizontally at constant speed.
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Check under the strong
Pull the pull head to the bottom, separating the two chains left and right and pulling in their respective directions.
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Open tall flat pull strong
Lock the puller head in the middle of the teeth and pull the chains left and right in their respective directions.
Testing method for trademark products
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The rope pulls on the hand
Apply tension radially until the rope separates from the film or the rope breaks.The separating force is the pulling force of the rope handle.
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O buckle pull
Apply radial tension until both O buckles are separated or the fabric is damaged.Tension is the force when the O buckle is separated or the clothe is broken.
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O buckle binding force
Continue applying force until the two O buckles separated.The force of separation is the binding force.
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Trademark seam cracking test
Clamp the trademark at the sewing position of 1mm (not the thickness of the mark) up and down directly for tensile test.
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