How to Choose Henan Rubber TPE Suppliers

TPE materials are used for overmolding, with TPE soft rubber as the outer coating layer,

Transparent grades include transparent and translucent series, each with multiple hardness levels; excellent transparency; smooth and soft surface; good anti-yellowing properties, tear resistance, and tensile strength; environmentally friendly; suitable for various transparent series products.

Because TPE transparent materials require high light transmittance, the surface quality of the products must be strict, without any defects such as streaks, pores, whitening, halos, black spots, discoloration, poor gloss, etc. Therefore, throughout the injection molding process, special attention and strict or even special requirements must be placed on TPE raw materials, equipment, molds, and even product design.

Rubber TPE suppliers

Common rigid materials for cooperation are mainly plastics, as well as metals and fabrics. TPE injection overmolding with fabrics is mainly used in luggage products, which, like metal overmolding, are generally fake overmolding.

TPE overmolding generally adopts a two-shot injection molding process, where the already molded rigid plastic part is fixed in the overmolding mold,

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, all parts should be cleaned with a screw cleaner before use and after shutdown to ensure no impurities adhere.

Transparent TPE is used in stationery, sports equipment, etc., with good UV resistance, chemical resistance, and ease of coloring and processing.

Rubber TPE suppliers

Then, at an appropriate temperature, the TPE soft rubber is injection overmolded onto the rigid part, and the product is obtained after cooling. The injection temperature for overmolding varies depending on the rigid material being overmolded.

Preheating the insert before overmolding helps improve bonding strength,

Styrenic transparent TPE is widely used in the footwear industry, largely replacing rubber; its applications in industrial rubber products such as rubber sheets and plates are also expanding.

Since any impurity in TPE material can affect product transparency, attention must be paid to sealing during storage, transportation, and feeding to ensure clean TPE raw materials. Especially if TPE raw materials contain moisture, heating will cause degradation, so they must be dried. During injection molding, a dry hopper must be used for feeding.

Rubber TPE suppliers

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