zipper Material classification: nylon zipper, resin zipper, metal zipper. Nylon zipper: invisible zipper, double bone zipper, woven zipper, reverse zipper, waterproof zipper and so on. Resin zipper: gold (silver) zipper, transparent zipper, translucent zipper, animal luminous zipper, bud zipper, diamond zipper. Metal zipper: Aluminum zipper, brass zipper (brass, white copper, bronze, red copper, etc.) ), black pull zipper. Classification by species. Closed tail zipper and open zipper (left and right). Double closed tail zipper (X or O) 4. Double Zip zipper (left and right).

Closed tail: it does not need to divide the high and small parts when it is fixed, so it can sometimes turn the head open. Sometimes, the density of the edge weft is loose and easy to appear the silk thread phenomenon. It affects the appearance better. It is better to put the pattern in the width of the bottom stop by weaving the upper and lower one, so that it is not easy to thread through the tape. The upper position must be leveled, the front 2.2mm takes the lead, the 1.8mm takes the lead, and the injection front and rear yards take the lead to ensure the 4.0mm.

　　開尾：定寸選齒較難，因牙距比較小(1.2mm)故最好選用固定碼裝，右插左高右低，需手工修咪，超音半顆咪壓到根，兩側帶脛分布均勻，且面線不斷，打孔布腳長約8mm，壓方塊插銷時拉的速度不宜太快，兩邊用力均勻且拉到位，壓機關慢一定要起作用，這樣模具不易損壞，壓力由高壓轉為低壓，進行緩慢關模，然后高壓動作壓力由低壓轉為高壓，進行高壓鎖模，兩個感應開關相差20mm左右即可，由于3#尼龍厚度較薄，故感應開關動作差較小，對調整感應開關位置要求較高，具體調整方法：當拉鏈空檔時感應開關燈亮，走到拉鏈咪牙高出部分，感應桿動作，感應開關燈滅，釣針下壓，勾住貼布合咪牙的孔到位沖下。

　　 nylon zipper Ordinary opening: fixed size and selected teeth should be adjusted at any time according to different code (because of the change of tooth spacing), ensure that the right inserts the left, the right and the lower, while the left side is inserted. On the contrary, the supersonic half grain is pressed to the root, the position of the adhesive tape should be leveled, so as to ensure that the pinhole of the bolt block is punched to the bottom, and the length of the punching cloth is about 9.5mm, so as to ensure that the bolt is loaded to the root, the bolt is penetrated through the puncture needle, and the side of the box is secured with the side of the tibia, and the piercing needle is penetrated through the needle. When repairing the moulds, attention must be paid to the lower die slope, that is, the right inserts the left, the right and the lower, and the left side should be inserted. Note: when you change the mold, you should pay attention to the starting position, because the mold stroke is not the same, otherwise easy to damage the mold. The specific adjustment can be put into the mold with a piece of paper. The hand wheel is just cut off, the paper is just cut off, the perforating foot is 9.5mm, and the pressure block is inserted. Please refer to the 3# nylon open end press.

Nylon double open tail, fixed size, supersonic and 5# nylon zipper, perforated cloth foot about 13cm, ensure the square bolt is loaded to the root, four pinholes are Pierce in the middle, the square must fall in place, otherwise it is easy to appear defective products, separate parts and pull heads should be matched. If special pull head is taken, it is recommended that the goods should be tested first before they are produced, and whether they are matched, punched needle, deviated from the center or the pieces are broken.

　　 Resin Zipper Pull head mouth high 2.6-2.7MM, mouth width 4.75-4.85 combination width 4.55+ 0.05 thickness 2.4+0.05. Closed tail: when pressing upward and downward, the temperature, injection delay and holding time should be adjusted three. If the zipper size is about 15CM, a certain quantity can be used with one die and two strips. Open: when making an inch, make sure to take the lead. FONT face= "Times New Roman" >4.5cm, (17 grains of teeth), the supersonic tape has a clear pattern, uniform left and right, and the position is about 1.5mm from the tooth, so as to ensure that the hook can be fastened tightly, and the word is opened. Press adjustment: high pressure should not exceed 100kg/cm2, shoot pressure 40kg/cm2, keep pressure 30kg/cm2, low pressure 10kg/cm2 below, high pressure, keep pressure cooling time should be more than 0. 1 seconds, specific according to the actual product (zipper type) to be adjusted again.