The processing method of TPE covered PC.

  • Time of issue:2023-05-19
  • Views:713

  The processing method of TPE covered PC.

  • Categories:Industry News
  • Author:SPP
  • Origin:en.tpe-sp.com
  • Time of issue:2023-05-19
  • Views:713

  The processing method of TPE covered PC.

  TPE overmolded PC, generally using the usual molding method, that is, two sets of molds, one set first injection molding PC products, the other set of molds (called overmolded molds) for injection molding TPE rubber overmolded to the surface of PC products. This kind of molding method is called secondary injection molding, overmolding or embedded injection molding. There are also more advanced two-color injection molding machines to process, the result is the same, through the injection molding method, the TPE and PC good composite bonding together. The injection molding temperature for overmolding varies depending on the hard plastic material used for overmolding. Because the temperature should be considered to let the hard rubber and TPE soft rubber both materials to soften, in order to promote the two materials in the contact surface to achieve a certain degree of compatibility. In order to achieve the effect of true overmolding, usually the injection temperature of TPE overmolded PP material is about 170-190 degrees Celsius; overmolded ABS material is about 220-220 degrees Celsius; the temperature of overmolded PC material is slightly higher than the injection temperature of overmolded ABS.

  The main advantages of TPE used in overmolding injection bonding:

  1. TPE elastomer soft rubber is used in secondary injection molding, overmolding and injection bonding. Because TPE material has good non-slip properties and good elasticity, it can enhance the touch feeling of the products and enhance the grip.

  2.TPE elastomer can be adjusted to suitable hardness (hardness range Shore 25-90A) and suitable physical properties (such as wear resistance, scratch resistance, adhesion, melt index, etc.) according to the physical requirements of the product. It provides various possible material application solutions for different products.

  3. TPE is processed by overmolding and injection bonding, commonly used in products such as handles, grips, electronic materials and so on. The material gives the product a comfortable touch, enhances the grip, improves the aesthetics of the product and the added value of the product. Most of the products are exported to the United States, Japan and the European Union and other developed countries and regions. Because TPE elastomer is green material, the material does not contain phthalates, halogens, and 38 SVHC substances of great concern as stipulated by REACH. It meets ROHS, REACH, NP, EN71, PAHS environmental testing standards, and can fully meet the environmental requirements of the United States, Japan, the European Union and other developed countries and regions.

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