Advantages of Zhejiang TPE Material Manufacturers

TPE is processed by injection overmolding,

Transparent TPE materials require high light transmittance, which imposes strict surface quality requirements on the material products. There must be no defects such as streaks, pores, whitening, halos, black spots, discoloration, poor gloss, etc. Therefore, throughout the injection molding process, strict and even special attention must be paid to the TPE raw materials, equipment, molds, and even product design.

To achieve the matte appearance of thermoset rubber, a rougher mold surface is required. Generally speaking, the rough surface produced by electrical discharge machining (EDM) of the mold cavity results in excellent workpiece appearance and makes demolding relatively easy. Abrasive methods such as steam blasting, sandblasting, shot blasting, and chemical etching can also be used to create surfaces with different gloss and appearance.

TPE material manufacturer

Common products include handles, grips, electronic materials, etc. The material imparts a comfortable touch, improves grip, enhances product aesthetics, and adds value.

TPE is used in injection overmolding, with TPE soft rubber as the soft outer covering,

The transparent grade includes transparent and translucent series, each with various hardness levels; excellent transparency; smooth and soft surface; good anti-yellowing performance, tear resistance, good tensile strength; environmentally friendly; suitable for various transparent series products.

Since any impurities in the TPE material can affect the transparency of the product, attention must be paid to sealing during storage, transportation, and feeding to ensure the TPE raw materials are clean. In particular, if the TPE raw material contains moisture, it will cause deterioration when heated, so it must be dried. During injection molding, a drying hopper must be used for feeding.

TPE material manufacturer

The common matching hard materials are mainly plastics, also metals and fabrics. TPE overmolding with fabric is mainly used in luggage products. Like metal overmolding, it is generally false overmolding. True overmolding is more common in secondary injection molding and two-shot injection molding, where the main material for TPE overmolding is plastic.

The overmolding temperature is generally controlled at 30-50°C, but for some highly crystalline TPE grades,

Transparent TPE is specifically 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.

Olefin-based transparent TPE has good weather resistance and ozone resistance, so it is called the fastest growing variety of TPE. It mainly serves as a primary rubber material in fields such as automotive and home appliances.

TPE material manufacturer

The mold temperature can be appropriately raised to 70°C, which is beneficial for bonding and can achieve a more glossy overmolded surface.