According to the commonly used special treatment means, can be waterproof zipper is divided into coating waterproof zipper, pvc film waterproof zipper, waterproof agent immersion, paste TPU film and other categories.
(a), Paste TPU film waterproof zipper: One of the TPU is environmentally friendly polymer, Chinese called thermoplastic polyurethane, also known as waterproof breathable membrane, is a new type of environmental protection materials. This is a major breakthrough in the application of waterproof breathable fabric, which overcomes many defects of PVC waterproof zipper. It not only has most of the properties of rubber and ordinary plastics, but also has excellent physical and chemical properties, so it is also known as the future material. TPU film is the use of TPU granular materials, through a special process made of film. It inherits the excellent physical property of TPU, and its application range is very wide. Because TPU overcomes many defects of PVC, so TPU film waterproof zipper also in performance than PVC waterproof zipper superior. To sum up, the TPU film Waterproof zipper with cold -40 100 Shan, waterproof, breathable, low temperature, soft and good features, is waterproof zipper in the high-end products.
(b), PVC film Waterproof zipper: The main material used in this product is PVC, the main ingredient is polyvinyl chloride, adding other ingredients to enhance its heat resistance, toughness, ductility. The surface of the film is the top layer of paint, the middle of the main ingredient is polyvinyl chloride, the lowest layer is the back coating adhesive. PVC materials can be widely used, there are two reasons: First, the unique properties of PVC (Rain, fire, anti-static, easy to shape), the second is the low input of PVC high yield characteristics. PVC Waterproof Zipper is the use of PVC waterproof characteristics.
(iii), coating waterproof zipper: it is characterized by not falling off, not white, not brittle, low-temperature 70s, environmental protection, soft, waterproof good.