enjoyurself

7,Special performance is required
( 1) , dyeing fastness: Demand, draw, connect with among 80 hot water of C soaking 15min, in contrast to former state, greater than 4 generally.
( 2) , the contracting rate of hand: The washing the contracting rate of the zipper is not greater than 3%, it is not greater than 3% to dry-clean the contracting rate.
( 3) , able to bear the organic solvent: It soak zipper for 20+ been at temperature /- whether four 2 record by second ?? s of 2H of the solutions rares,let it the getting drier naturally, opening and closing and keeping the already existing function of the zipper.
( 4) , the corrosion-resistant performance of plating layer of metal: Receive in 3% of the records in solutions, take out naturally after 180min drily, estimate rusty spot.
( 5) , include poisonously or the harmful material.
Strong test of the zipper
There are many kinds of to measure strong methods of zippers, but the basic one requires that can pass the following methods test with strength, can judge the chain quality drawn of different uses in the result tested from these.
( 1) , the flat test of drawing brute force
Draw brute force basic strong indicator most, spend with testing zippering toothing in lock state each other while being flat, the ability to resist horizontal effort, this is very similar to state used actually.
( 2) , the test of having and stopping brute force
The chain drawn connects with the tooth and locks each other, and will draw the head and pull to the top and stop the mouth, will lead to draw the head, can measure the brute force stopped on the zipper at this moment, this is a simulation zipper, under holding the state, it draw head stop draw at crossing take off or on stop resist by ability of external force when being move bringing muscle.
( 3) , the test of making and stopping brute force
It draw it pull to it last mouth underpart, draw there aren't tooth, last chain tooth to draw both sides head but, make and stop the strength needed destroyed by measurement, and measure and draw the resistance of the component within the head.
( 4) , make tail draw strong test while being flat
Test make tail draw, connect with intubate and socket resist the situation that the external force destroy, the jig is differentiated fixed left on the right open the tail from head to foot, draw and connect it with closing the situation, begin to start the machine.
( 5) , the test of drawing the head and locking brute force
Draw head lock since, draw tooth divide into into about two part repeatedly in the middle to connect with tooth, draw the zipper of two about parts, can test that lock brute force and draw the resistance of the component within the head.
( 6) , draw soil draw one combine strong test
In order to perpendicular to direction to draw petal construct in order to draw head effort, know, draw petal with draw body separate, the number value recorded at this moment is to draw combination brute force of playing one of the head.