Basic knowledge of pull-up (zipper puller)

The main part of the pull. The pulling body has two inlets and a meshing outlet, upper plate and lower plate. The upper plate has a nose pull, which is integrated with the lower plate by the support core. The pull head used for nylon zippers has upper and lower ribs on the inside of the upper and lower plates. Image We say nylon zipper pull, plastic steel zipper pull, metal zipper pull, these, not refers to the material of the pulling head, but refers to the material of the zipper tooth, so the real accurate expression of the commonly called puller should be: nylon zipper with pull, plastic steel zipper with pull, metal zipper with zipper. Why are there these types of zipper pulls? Isn't it okay to unify into one? That's because different varieties of zippers their width and thickness are not the same, as shown in the picture A and B above, for matching zippers, the size of A and B on nylon zippers, plastic steel zippers, metal zippers on the size is different. Physical color map Image Image Figure 2-20 Schematic diagram of zipper puller structure The expression format of the general puller to place an order: Example 1: D5# automatic head E001 pull tab Surface treatment: paint to Y card color 218 Example 2: D5# plastic conjoined unlocked pull head color pair template, There are many types of pulling heads, the common ones are mainly automatic lock pulling head, needle lock pulling head, unlocked pulling head, double open tail pull-down head four forms, the following we classify to make an introduction. (1) Auto lock slider Referred to as self-locking head, the nose of the pulling head has a self-locking small stop, which can be automatically embedded between the chain teeth under the action of spring force to lock the pulling head. When opening and closing the zipper, lift the pull tab to drive the small stop out of the chain. The automatic pull lock has: a. Single pull self-locking head (one way A/L slider Figure 2-21a), - the upper plate of the pull head (nose pull) is equipped with an automatic lock pull head of the pull tab; Uses: The most commonly used popular models, children's, adult clothing, shoes, etc. are almost all used. ImageImageImage Automatic head, locomotive head, European head. All belong to the automatic locking pull. b. Double pull self-locking head (two way A/L slider Figure 2-21b), - the upper plate (nose pull) and lower plate (nose pull) of the pull head are each equipped with an automatic locking head of the pull tab; Uses: used in special requirements of products, rarely used. Image c. Rotating self-locking head (creversible A/L Figure 2-21c), the pull tab can wrap around the automatic locking head around the upper and lower plates of the pulling head. Uses: Used on clothing that can be worn on both sides, often used. Image Image d. Shrapnel double lock (YG head) Usage: trouser chain, bag chain. Image Image (2) Pin lock slider Figure 2-21d) The pull tab of the pull head has 1 to 2 stoppers, and when the pull tab is pressed down, the stopper is inserted between the chain teeth to fix the puller. Usage: bedding, shoes, etc Image Image Figure 2-21 One of the schematic diagrams of the type of pulling head (3) Non lock slider - Pull head without locking function. It is divided into single and double: Usage: bags, Image Image a. Single pull unlocked pull head (one way N/L Figure 2-22a) The upper plate of the pull head is equipped with a pull tab unlocked pull head; b. Double pull unlocked pull head (two way N/L Figure 2-22b) The upper and lower plates of the pull head are each equipped with a pull tab unlocked pull head; c. Rotating unlocked pull head (reversible N/L Figure 2-22c) pull tab can wrap around the upper and lower plates of the pull head; d. N/L slider with a lock hole see Figure 2-22d There is one or two parallel keyholes on the pull head body, which is used on the "O" zipper, and the two pulls can be locked with a lock after the zipper is closed. (4) Invisible pulls (invisible) are used for tighter clothing, mostly used in women's clothing. Image Puller is an important component of the puller, in addition to functionality, it has a strong decorative nature, and many pullers are mostly brand carriers. It can be designed to connect with the pull body in various geometries or with the pull body through the connecter to achieve zipper closure. There are many pull tab materials, such as metal, injection molded, leather, diamond-set and so on. As shown in Figs. 2-23, 2-24, 2-25 Figure 2-23 Pull tab No. 1 Silica gel (silicon concan), PVC class, soft material, good hand feeling, rich color. Image Figure 2-24 Pull tab No. 2 metal pull tab Image Figure 2-24 Pull tab 3 plastic pull tab For TPU, TPE, POM, PP and other plastic injection molding. It is generally monochrome and can also be two-colored. It is characterized by environmental protection and wear-resistant. Image Figure 2-25 Pull tab No. 4 set with diamonds, greased with glue pull tab Image Image Figure 2-26 Pull tab No. 5 leather pull tab Image Test items related to pulling heads: 1. Comprehensive tensile test, that is, the force of the pull tab from the body of the pull head, measured in kilograms (KG) or cattle (Lbf). 2,Salt spray test. Simulate the acid and alkali environment to see whether the product is discolored, oxidized, etc. 3, pull head lock force. Put on the zipper to test the locking strength of the slider on the zipper. 4, pull the head over the needle. Some customers who export or have requirements for this test whether the product contains iron, mainly to prevent sharp tools such as needles that interrupt the clothing processing process from harming consumers. If this is required, all pulls should be made of iron-free components. 5, reciprocating fatigue test. Detect whether the pull head is pulled and closed 2000 times (according to requirements) whether there are worn zippers, bursting teeth, crooked teeth, etc., and can check whether it matches the zippers. 6, Color fastness test. Detect the washing resistance of the surface treatment of the pull head such as painting, electroplating, etc., whether it will fade, delaminate, etc. 7. Does not contain azo and other environmental protection tests. Test items related to pull tabs: 1. Torque, torque force test. Test the torsional force of the pull tab, measured in kilograms (KG) or Ox (Lbf). 2,Pass the needle. Some customers who export or have requirements for this test whether the product contains iron, mainly to prevent sharp tools such as needles that interrupt the clothing processing process from harming consumers. If this is required, all pulls should be made of iron-free components. 3,Color fastness test. Detect the washing resistance of the surface treatment of the pull tab such as painting, electroplating, etc., whether it will fade, delaminate, etc. Whether the leather pull tab will shift color, etc.7, does not contain environmental tests such as azo.