First, let's understand the principle of zipper:
The structure of the zipper is mainly connected by serrated teeth one by one.When you pull up, the teeth will be closely connected by the pull head.Because the jagged joint is the strongest,So it doesn't stretch or shift and break.
How do zippers usually break?
1) because we often wash clothes, because of the detergent with strong decondibility and the bleach containing "chlorine", it will decompose the paraffin wax and oil protective film attached to the zipper. When you use the first zipper to pull up and close, the bottom side of the zipper will be unable to fit the bilateral tooth row into the zipper.
When you pull it up, it will cause the bilateral teeth row cannot be aligned and closely occluded. As long as you exert a little pressure on the zipper, the bottom end of the zipper will start to fall off, so the whole zipper will only have the top and the bottom end of the zipper bite the rest teeth row and then all the zippers will be off.
2) zipper itself quality problem, because the zipper material is not up to standard of raw materials, as well as the processing of hardware old problems will make the output of the finished product is larger error, also resulted in the opening and closing of zipper is not smooth, so choose the zipper must choose strong brands, so every detail on the production line, there is a brand standard, will give you in the use of clothing or other in the future to bring more comfortable experience.
