The quality problems and solutions that often exist in zippers

1. Contrast color zipper: The fabric is inconsistent with the zipper tape, such as white fabric with black or red zipper tape. When placing an order, it must be stated that the color fastness must be good, and the zipper must be tested and confirmed before being sewn before mass production. Contamination occurs. In the dyeing process of clothing, the remaining acidic substances or oxidants react chemically, which may cause contamination of the contact area between the zipper and the clothing. Please use fully washed fabrics and materials. 3. Discoloration of the zipper The microphone teeth of the metal zipper turn black and the discolored microphone teeth will pollute the clothing. Once the copper alloy is oxidized, it will turn black... Do not seal the packaging bag, keep it breathable, and be careful not to be full of moisture. Use moisture-proof paper and moisture-proof agent, the effect will be better. The following are some of the more useful methods: 4. 8#, 10# resin, metal pullers or larger-volume pullers, round pullers are not effective for needle detection. On the one hand, it is due to its large size, and on the other hand, the circular pull tab will generate a magnetic field when testing the needle, thereby affecting the effect of the needle detection test. 5. Nylon zipper is used for PVC fabric or waterproof/ski fabric (light color), please note that the fabric will absorb oil stains in the zipper and cause stains on the fabric. When receiving similar orders, please indicate when placing the order: zipper Control the oil yield and conduct tests before production If the phenomenon of migration occurs, the finished products should be separated by paper, and attention should be paid to the preservation state. 7. The cotton garment with metal zipper will change color after dyeing. Discoloration is caused by the chemical reaction of the mouthpiece, the split piece, the slider and the top stop after acid/alkaline dyeing. At present, the zipper factory can only add film to the metal parts such as the slider and the microphone (this is paid), but it cannot completely guarantee that the zipper will not react chemically. Please make a sample for testing first to confirm that the zipper is suitable for the garment production process before purchasing in large quantities. This article comes from: City Machinery Co., Ltd., please indicate: