Detection method of zippers
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°.
Check poewr on
Secure the lower part of the bite zipper and pullthe pull head up.
Lock the puller head in the middle of the teethand pull the chains eft and riaht in theirrespective directions.
Stretch the bite zipper horizontally atconstant speed.
Check under the strong
Pull the pull head to the bottom, separating thetwo chains left and right and pulling in theirrespective directions.
Open tall flat pull strong
Lock the puller head in the middle of the teethand pull the chains left and right in theirrespective directions.
Testing method for trademark products
The rope pulls on the hand
Apply tension radially until the rope separatesfrom the flm or the rope breaks.The separatingforce is the pulling force of the rope handle.
O buckle pull
Apply radial tension until both O buckles areseparated or the fabric is damaged.Tension isthe force when the O buckle is separated or theclothe is broken.
O buckle binding force
Continue applying force until the two O bucklesseparated.The force of separation is the bindingforce.
Trademark seam cracking test
Clamp the trademark at the sewing position of1mm (not the thickness of the mark) up anddown directly for tensile test.
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