How to Choose Dongguan Thermoplastic TPE Manufacturers

A bonding layer is formed at the interface between hard plastic and soft rubber,

Due to the high light transmittance required for transparent TPE materials, the surface quality of the product must be strictly controlled, without any defects such as streaks, pores, whitening, haze, black spots, discoloration, poor gloss, etc. Therefore, throughout the entire injection molding process, strict and even special attention must be paid to the TPE raw materials, equipment, molds, and even product design.

Diene-based transparent TPE, a structural isomer of natural rubber, is also known as 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 films, and other industrial rubber products due to its good transparency, weather resistance, electrical insulation, and photodegradability.

Thermoplastic TPE manufacturers

Greatly improve the bonding adhesion of TPE soft rubber to hard plastic. False overmolding hardly involves the compatibility of the two materials; the overmolding is achieved through mechanical force, mold and product design, surface treatment, and interlocking effect, allowing the soft and hard plastics to bond together.

The key point of TPE overmolding (two-shot injection molding) is to ensure good adhesion between TPE and the substrate materials such as PP, ABS, PC, PA, etc. To achieve good adhesion between TPE and the substrate,

Transparent TPE materials have different product properties when applied in different areas. Thermoplastic elastomer, also known as TPE material, not only has the processing properties of thermoplastic plastics but also the physical properties of vulcanized rubber. This is the advantageous combination of plastics and rubber, and transparent TPE is widely used in people's daily life and production.

Since any impurities in TPE material can affect the transparency of the product, sealing must be ensured during storage, transportation, and feeding to keep the TPE raw materials clean. Especially if the TPE raw materials contain moisture, heating can cause degradation, so they must be dried. During injection molding, a drying hopper must be used for feeding.

Thermoplastic TPE manufacturers

According to the principle of chemical similarity and compatibility, it is crucial that TPE and the substrate have similar polarity to allow molecular-level fusion between TPE and the substrate.

TPE as a raw material. TPE material manufacturers provide environmentally friendly, non-toxic, good elasticity, and smooth surface. In addition,

Transparent grade includes transparent and translucent series, each with various hardness levels; excellent transparency; smooth and soft surface; good anti-yellowing properties, tear resistance, tensile strength; meets environmental requirements; suitable for various transparent series products.

Thickness of TPE/TPR overmolding layer. In most overmolding applications, a wall thickness range of 1.5-3.0mm ensures good adhesion. If the TPE layer is too thin, injection molding becomes difficult, adhesion strength is low, and hand feel is poor. If the TPE layer is too thick, on one hand, the cost is higher, and on the other hand, defects such as shrinkage and bubbles are prone to occur.

Thermoplastic TPE manufacturers

The surface is not easy to attract dust, has good thermal conductivity, excellent anti-fouling performance, and passes skin safety and non-sensitization tests to meet the characteristics that silicone cannot provide, making the appearance more high-end and refined, positioning TPE as the preferred high-end raw material in the industry.