What are the advantages of TPE thermoplastic elastomer
Source：德创化工Time：2019-04-27Hits：2326
The TPE material is not unfamiliar to anyone who has been in contact with the TPE material, but the TPE material is also relatively rich in content for the layman, because the TPE material is a hybrid new type of environmental protection material. The TPE material characteristics can be adjusted according to the customer's requirements. Therefore, the application range of TPE materials is also relatively wide. So today we share the difference between injection grade TPE and extrusion grade TPE materials. Can injection TPE be used for extrusion? Let's see!
General injection plastic TPE, according to the need to do a better liquidity, extruded TPE generally to melt to do a slightly lower point, in addition to the need for a certain melt strength, that is, the stereotyped effect is better! Of course, do wire, melting finger is not necessarily small, need to expand small exit, so it is easier to quickly extrude.
TPE is an abbreviation for English Thermopolistic Elastomer, which means thermoplastic elastomer. TPE is generally considered to be a synthetic modification of SEBS(styrene block copolymer) in the elastomer industry. TPE secondary injection molding generally refers to the first injection of hard plastic PP, PS, ABS, PC, PA, etc., and then through the injection molding process on the hard plastic material surface bread covered with a relatively thin TPE soft gum. To increase the comfort of the product's touch, skid stop performance and slow impact performance.
Injection molding = Injection molding machine + Injection molding mold; Extrusion = extruder + die, core die + cooling sink. The injection molding machine and the extruder, almost, melt the plastic. The difference lies in the mold: Injection mold, there are upper and lower molds, together, inside the processing has a cavity, is the same shape as the product. After the plastic particles melt, they are injected into a closed mold cavity, cooled, and the product is removed. Extruding die is very simple, is the mouth mold set core die, similar to two rings together, extrude tube shape, and then cool through the sink to become hard.
The biggest differences between injection molding and extrusion are as follows:
1, injection molding can be a relatively complex product, the product is not continuous, one cavity or more, the basic shape of plastic products are molded by injection, such as: plastic washbasin, plastic shell, tool handle, soft plastic toys and so on. Features: Can not be continuously produced, need to cool one mold and then one mold. And there's material.
Extrusion can generally only be done with the same cross-sectional, continuous production of products such as TPE water pipes, TPE ear wires, TPE tension tubes, TPE tension belts, TPE seals, and so on. Features: continuous production, through the sink, edge extrusion edge cooling. As long as the material is constant, it can always be squeezed out, tens of thousands of meters can be, there is no head.
TPE is now really a very extensive material in our daily life, and TPE is also an environmental material, which also makes TPE's development speed increase, type and use are also very diverse.
