Anhui TPR Material Manufacturers

TPE elastomer soft gel can be adjusted to the appropriate hardness based on product property requirements (hardness range Shore 25-90A),

Diene transparent TPE, diene 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, it is widely used in shoemaking, sponge, optical film and other industrial rubber products due to its good transparency, weather resistance, electrical insulation and photodegradability.

Transparent TPE is used in appliance casings, handles, grips, etc. It exhibits a very good touch feel, anti-slip and labor-saving, and is easy to color and process. It also has a wide design space.

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as well as appropriate physical properties (such as abrasion and scratch resistance, adhesion, melt index, etc.). It provides various possible material application solutions for different products.

TPE is used for overmolding and injection bonding, with TPE soft gel as the soft outer covering layer,

Transparent TPE, specifically speaking, is a thermoplastic elastomer, while TPR, translated from English, is strictly called thermoplastic rubber. This is the most basic difference. TPE is generally modified from SEBS base material, while TPR is modified from SBS base material.

Because TPE transparent material requires high light transmittance, the surface quality of the material product must be strictly controlled, without any defects such as streaks, pores, whitening, halos, black spots, discoloration, poor gloss, etc. Therefore, throughout the injection molding process, great attention must be paid to TPE raw materials, equipment, molds, and even product design, and strict or even special requirements must be proposed.

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Common matching hard materials are mainly plastics, also metals and fabrics. TPE injection bonding with fabric is mainly used in luggage products, like overmolding with metal, generally it is false overmolding. True overmolding is more common in two-shot injection molding and bi-injection molding, that is, the main material of TPE overmolding injection bonding is plastic.

When using ordinary injection molding machine to do two-shot overmolding on nylon, it is recommended before overmolding,

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

To achieve the matte appearance of thermosetting rubber surface, a rougher mold surface is required. Generally speaking, the rough surface produced by electrical discharge machining (EDM) of the mold cavity will produce excellent workpiece appearance and make demolding relatively simple. Grinding methods such as steam blasting, sandblasting, shot blasting, and chemical etching can also be used to produce surfaces with different gloss and appearance.

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First preheat and bake the nylon parts, because nylon has strong water absorption, and overmolding requires a higher molding temperature; preheating before overmolding can remove moisture, facilitating quick hot overmolding.