How to choose a rubber TPE supplier in Shanghai

TPE overmolding injection bonding generally uses a two-shot injection molding process,

To prevent contamination of TPE material and the presence of old material or impurities in the screw and attachment recesses, especially materials with poor thermal stability, all parts should be cleaned with a screw cleaner before use and after shutdown to ensure no impurities adhere.

SEBS is the hydrogenation product of SBS. SEBS has a saturated molecular structure, which makes its characteristics quite different. It has the necessary aging resistance, yellowing resistance, and other properties required for producing transparent TPE, and also contributes to excellent properties such as high temperature resistance and corrosion resistance. This is how transparent TPE is manufactured.

rubber TPE supplier

Fix the already injection-molded rigid plastic part onto the overmolding mold, then at an appropriate temperature, inject and bond the soft TPE onto the hard plastic part, and cool to obtain the product. The injection temperature for overmolding bonding varies depending on the hard plastic material being overmolded.

TPE overmolding injection bonding generally uses a two-shot injection molding process, that is, fixing the injection-molded rigid plastic part onto the overmolding mold,

The wall thickness of the TPE layer should be as uniform as possible to achieve the best molding cycle. The transition between different wall thicknesses should be gradual to reduce problems caused by fluid flow, such as gas marks and bubbles.

Diene-type transparent TPE, diene-type TPE is mainly an isomer of natural rubber, so it is also called thermoplastic trans-natural rubber. Although its heat resistance and mechanical strength are not as good as rubber, with good transparency, weather resistance, electrical insulation, and photodegradability, it is widely used in shoemaking, sponge, optical film, and other industrial rubber products.

rubber TPE supplier

Then at an appropriate temperature, inject and bond the soft TPE onto the hard plastic part, and cool to obtain the product. The injection temperature for overmolding bonding varies depending on the hard plastic material being overmolded.

Preheating the insert before overmolding helps improve bond strength,

TPE high-transparency material has different product properties when applied in different aspects. Thermoplastic elastomer is also called TPE material. Transparent TPE not only has the processing properties of thermoplastic plastics but also has the physical properties of vulcanized rubber. This is the so-called advantageous combination of the advantages of plastic and rubber. Transparent TPE is widely used in people's daily life and production.

Since any impurity in the TPE material may affect the transparency of the product, attention must be paid to sealing during storage, transportation, and feeding to ensure the TPE material is clean. Especially if the TPE material contains moisture, heating can cause the material to deteriorate, so it must be dried. During injection molding, a drying hopper must be used for feeding.

rubber TPE supplier

Because the preheating process can improve the compatibility between the insert material and TPE. The appropriate temperature for the insert should be discussed and determined with the material supplier.