Characteristics of TPU plastic

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Characteristics of TPU plastic
The second one is because TPU is also soft. Like silicone, it is a soft rubber product. Many people don’t know the difference between silicone and TPU, and even some Taobao sellers don’t know. They call the soft silicone silicone. . TPU belongs to the plastic category, and the product is made by injection molding process, that is, after the plastic rice is heated and melted, the barrel is injected into the plastic mold to make the product. Silica gel belongs to rubber, and the molding process is vulcanization molding. The silicone mold is opened up and down. Cut pieces of silicone raw materials, put them in the mold, and heat and pressurize to make the product. Generally, plastic products will have a plastic inlet, which needs to be trimmed after the product is injection molded. If the trim is not good, the appearance will be affected. The silicone has no glue inlet, but there is a burr around it that needs to be repaired. If the mold is very garbage, the burr will be more obvious, and the burr will be the same as that of a dog. From the feel of the hand, the hardness of TPU is generally harder than that of silicone, and the elasticity of hand pinching is stronger, while the elasticity of silicone is slightly worse. TPU can be compared to the feel of muscle, and silicone to the feel of fat. From the outside, TPU can be made very transparent, but silicone cannot. The most transparent one is very hazy, like a thick fog. It is precisely because of this transparent feeling of TPU that it is more popular with users. Moreover, there are still many high-grade TPU products, with strong selectivity and more pattern changes than silica gel. The disadvantage of TPU is that it is easy to deform and turn yellow. After three or four months of use, if you just buy a light-colored product such as transparent white, it will easily turn yellow. If the material is not good, the surface may even fog up. Or sticky hands.