How to choose Fujian thermoplastic TPE wholesale

TPE elastomer soft gel can be adjusted to the appropriate hardness according to the physical property requirements of the product (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 has good transparency, weather resistance, electrical insulation, and photodegradability, and is widely used in shoemaking, sponge, optical films, and other industrial rubber products.

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

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And appropriate physical properties (such as wear and scratch resistance, adhesion, melt index, etc.). Provides various material application plans for different products.

Overmolding (two-shot injection molding) of TPE, the key point is that TPE and the substrate material (PP, ABS, PC, PA, etc.) can be well bonded. To achieve good adhesion between TPE and the substrate material,

SEBS is the product of SBS after hydrogenation. SEBS has a saturated molecular state structure, which leads to its unique characteristics. It has the necessary aging resistance, yellowing resistance, etc., for producing transparent TPE, and also promotes excellent properties such as high temperature resistance and corrosion resistance. Only then can transparent TPE be manufactured.

Transparent TPE is used in stationery, sports equipment, etc. It has good UV resistance, chemical resistance, and is easy to color and process.

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According to the principle of chemical similarity and compatibility, the key is that TPE and the substrate material should have similar polarity, so that TPE and the substrate material can achieve molecular chain level fusion.

When using a common injection molding machine for two-shot overmolding on nylon, it is recommended to preheat and bake the nylon part before overmolding,

Transparent TPE specifically refers to thermoplastic elastomer, while TPR is translated from English, strictly speaking 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.

Thickness of TPE/TPR overmolding layer. In most overmolding applications, wall thickness in the range of 1.5-3.0mm will ensure good adhesive effect. If the TPE layer is too thin, injection molding is difficult, adhesion strength is low, and hand feel is poor. If the TPE layer is too thick, on one hand the cost is high, on the other hand defects such as sink marks and bubbles are prone to occur.

Thermoplastic TPE wholesale

Preheat and bake the nylon part first, because nylon has strong water absorption, and overmolding requires high molding temperature; preheating before overmolding removes moisture and facilitates rapid hot overmolding.