Although the metal zipper is insignificant, it also needs scientific use. When pulling the metal zipper, the teeth on both sides must be close, the top must be aligned, and then the metal zipper head must be pulled gently along the track, and cannot be pulled too hard.
When moving the metal zipper head, be careful not to twist the skirt or cloth edge and other debris into the metal zipper, so as not to cause "teeth skew", "broken belly", "teeth" and other phenomena. If the metal zipper is astringent and not easy to pull, do not pull hard, you can apply some wax or soap on the metal zipper, you can pull.

If the metal zipper head unilateral teeth split, wear loose, can be used in the metal zipper head of the closing end of the transverse gently clamp, the metal zipper will immediately become good, unilateral teeth tight, no longer loose. Avoid contact with humid environment, because the metal zipper will be due to metal oxidation leaching caused by part of the teeth have black phenomenon.

Avoid contact between the metal zipper and the rubber band, because the rubber band itself contains sulfide, and when the rubber band bundles the metal zipper, the metal chain teeth will vulcanize (turn black). After washing, it is necessary to clean and dry in time: because the dyes or residual chemicals in the fabric REDOX reaction with the metal parts, it may cause the metal parts to change color.

When the metal zipper does not open and close smoothly, if the chain head is pulled forcefully, it will produce tooth occlusion failure. At this time, use paraffin or lubricating spray to apply to the surface and inside of the tooth, and then move the pull head several times after sliding loose. Sometimes the chain head bites the line segment or the fabric so that the pull head can not move in this case, if you want to pull the pull head, it will bite deeper and deeper, you should put the pull head backwards on the one hand, and the fabric untie. When fully bitten in, do not vigorously pull the pull head, please slowly backward pull the head.