5/15/2008 - Performance is required: |
Performance is required:
( 1) The shrinking rate of washing of the zipper is not greater than 4%; It is not greater than 3% to dry-clean the shrinking rate.
( 2) Able to bear the organic solvent. Soak zipper in temperature ' 20?à 2) . Four chlorine ethylene 2h in the solution of C, then take out, let it naturally dry, zipper(spend manual to draw back and draw, equal to) Must keep its function of use.
( 3) Part, metal of the zipper plate the corrosion-resistant performance on layer. The sample is soaked in 3% of the Nacl solutions, after 180min, takes out and lets it be naturally dry, there should not be rusty spots through estimating.
( 4) The appended documents of some selling markets. Such as the country of the European Economic Community, draw in the main material zinc alloy of the head under the regulation, can't contain the nickel (Ni) The element, forbid using sulphur dyes,etc.. Can't contain sulphur (S) in the dyestuffs that bring in the yarn With the lead (pb) The element, does not include the azo dyes.
5,Determine the intensity method of the zipper:
? The crosswise of the zipper resists tension ' 2.5cm)
The ordinary zipper resists the determination of tension: This is a method that is used for showing the general zipper intensity, the lower zipper is gripped under the state shut, as drawn, use with the angle with vertical zipper direction and fix the strength of the pace to act on the zipper, determine the tension of resisting.
2-31 zippers of crosswise of Fig. resists tension
? Tension of resisting on the zipper top
Fixed to bite bottom to shut zipper while being easy, stop move chain to by head again, through act on, lie in zipper top draw and deduct hard, can measure the size of resisting tension. The ones that stopped on measurement in this blocked the intensity test method of strength.
|
|
|
About Me
Friends
|
