1 Important tips for buying zipper:

The adaptability of zippers in different environments and occasions is different. Different specifications have a certain scope of application. The requirements of ordinary zippers and special zippers are different. Therefore, when selecting zippers, the manufacturer must pay attention to the following issues :

1. Targets for zipper applications. When purchasing zippers, it is best for the purchaser to inform the zipper manufacturer, which type of product the zipper is used for, and whether there are any special post-processing requirements for the product, such as ordinary water washing or acid enzyme washing, etc. This is convenient for the zipper manufacturer to adjust the quality and individual requirements of the zipper to the requirements of the supporting products; 2. The length of the zipper and the allowable tolerance, the meaning of the zipper length is different in different zipper forms, because the zipper is a flexible The fabric will have a certain degree of expansion and contraction under the action of external force. When purchasing the zipper to determine the size, it must be considered; 3. The requirements for the composition of the zipper, because different countries and regions have different environmental and ecological requirements for textiles, the inspection method is also They are not all the same, especially the grade requirements for azo, heavy metal-free, over-detection, etc. are very different. Therefore, it is best to indicate the country and region where the product is exported in the purchase of zipper, or directly propose the composition of the zipper. Requirements; 4. Children’s clothing zipper safety tips, in order to ensure the safety of zipper use in children’s clothing, we must not only control the chemical composition of the zipper products, but also have requirements for metal accessories, such as the use of injection top and bottom stops, The metal fittings have no sharp edges, etc., to avoid sharp corners from hurting and scratching children's skin.

2 Matters needing attention in the use of finished zipper.

1. Correct selection and use of sliders. Different sliders have different functions and should be selected correctly. In the washing process of clothing, the chemical composition of some detergents is concerned about corrosion. For example, it is best to use spring pulls that are resistant to washing. The zipper is washed in the unfolded state. The lock slider receives a sudden pulling force, or some sundries enter the slider, causing the slider to be damaged; 2. The correct use of zipper accessories, because the metal top stop and bottom stop are sharper for penetrating chain feet, In the process of manufacturing and use, the sharp part will be accidentally exposed, and there are unsafe factors. Therefore, it is recommended that children's clothing use injection-molded top and bottom stops when choosing a zipper. The same applies to zippers used in underwear. For open-end zippers, be sure to insert the insert tube into the bottom of the socket cavity, insert it to the end, and then pull the slider. If the insert tube cannot be inserted in place, pull the slider forcibly, which will easily cause the first zipper. The chain teeth are deformed or displaced, resulting in that the two chain teeth cannot be verbally engaged or the pull head cannot be pulled firmly. Even if it can be pulled, it will cause the chain teeth to "broken". If the intubation tube is not inserted in place, it is easy to damage the plug-in unit. The correct method: When the slider cannot be pulled, please move the slider back. Check that the intubation tube is in place and there will be no problem when pulling it; 3. The problem of discoloration of metal zipper teeth is due to the chemical nature of copper alloys. When it is acidic, alkaline, oxidizing or reducing agent, a chemical reaction will occur, causing the color to change. When the chemical agent remaining on the clothing reacts with the elements, sliders or opening parts of the metal zipper, the zipper may change color. This is reflected in the high temperature and high humidity conditions (the sewn product is steam ironed and sealed In the plastic belt and keep it for a long time, etc.) is easier to happen, this situation is not the quality of the zipper itself. Metal zippers have been protected during the manufacturing process, but due to the oxidizing nature of the copper material, even if the protective treatment sits well, there are unavoidable things that happen. For example, when the copper zipper is used in leather products or wool products, it turns black due to the oxidation of metal. This is because the chromic acid, tannins used in leather products and the bleaching agent (ammonium sulfite) in the bleaching process of wool products Later, due to incomplete neutralization, gaseous substances remained in the product. In order to prevent oxidation of the copper alloy, it is necessary to carry out anti-rust treatment, but due to the use of a strong treatment agent and sealing in a polyethylene packaging bag, it will promote discoloration. The rubber band itself contains sulfide, which can easily cause the copper material to become black due to oxidation reaction, so avoid using rubber bands to tie metal zippers.