How to choose a black TPR manufacturer in Jiangsu

TPE uses overmolding injection bonding process,

TPE high transparency material has different product properties when applied in different aspects. Thermoplastic elastomer is also called TPE material. Transparent TPE not only has the processing properties of thermoplastic plastics, but also has the physical properties of vulcanized rubber. This is the so-called advantageous combination of plastic and rubber. Transparent TPE is widely used in people's daily life and production.

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

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Common products such as handles, grips, electronic materials, etc. The material gives the product a comfortable touch, improves grip, enhances product appearance and added value.

TPE overmolding, as the name implies, is the process of overmolding TPE soft material onto other materials.

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

Transparent TPE is used in appliance housings, handles, grips, etc. It offers a very good hand feel, is slip-resistant and labor-saving, and is easy to color and process. It also has a wide design space.

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Common processing methods include one-shot molding using a two-color injection molding machine, or using a standard injection molding machine with an overmolding mold for two-shot injection molding. TPE overmolded products are generally handles, grips, and similar items. TPE soft material has a special comfortable touch, and the introduction of TPE material improves the grip and tactile feel of the product.

During the TPE material molding process, during the filling of the mold cavity,

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 material is clean. Especially if the TPE raw material contains moisture, heating will cause the raw material to deteriorate, so it must be dried. During injection molding, a drying hopper must be used for feeding.

The wall thickness of TPE material should be as uniform as possible to achieve the best molding cycle. The transition between different wall thicknesses should be gradual to reduce fluid flow problems such as flow marks and bubbles.

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If the filling performance of the product is poor, there will be excessive pressure drop, too long filling time, insufficient filling, etc., leading to quality issues in the product.