Commonly-used method of discerning the quality of the zipper
The dye for thee strip should be even without stain and scar,touched by hand,it feels soft.The band looks like wave in the direction vertically and horizontally.
Teeth:The surface of the teeth should be smooth .When used,it feels soft without noise.
Slider:The slider should go smoothly are freely.fastened but will not come off.
Stick cloth:The stock cloth fits the hand well,without breaking and coming off.
Retainer,Insert Pin:Square bolt can be adopted freely fastening with thee band.
The top stop must come together with first tooth on metal and nylon zippers.But the distance can not be over 1mm and should be form and looks fine.
The bottom stop must come together with the teeth or be fastened on surface and should be fixed and look fine.
B、Key tips on zipper purchase
Where will the zipper be used(Such as leather truck,footwear,jacket,raincoat,tent,jeans needing hard washing and leather products with high acidity),or other special requirement.
Requiremment for thee content of zipper:does not need containing AZO or nickel pass needle detector. |
