Is Tianjin Plastic TPR Manufacturer Reliable?

In the elastomer industry, TPE usually refers to composite functional materials obtained by modifying SEBS.

Transparent grades are divided into transparent and translucent series, each with multiple hardness levels; excellent transparency; smooth and soft surface; good anti-yellowing performance, tear resistance, good tensile strength; meets environmental requirements; suitable for various transparent series products.

The wall thickness of TPE glue positions should be as uniform as possible to achieve the best molding cycle. Transitions between different wall thicknesses should be gradual to reduce problems caused by fluid flow, such as air marks and bubbles.

Plastic TPR manufacturer

TPE elastomer soft rubber has excellent comprehensive properties and is the most commonly used soft rubber material for secondary injection molding, overmolding, and two-color injection molding.

With the rapid development of the TPE elastomer industry in recent years,

The thickness of the TPE/TPR overmolding layer. In most overmolding applications, a wall thickness range of 1.5-3.0mm will ensure good bonding. If the TPE layer is too thin, injection molding is more difficult, bonding 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.

TPE high-transparency materials have different product properties in different applications. 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, and transparent TPE is widely used in people's lives and production.

Plastic TPR manufacturer

The application of TPE overmolding secondary injection molding is also becoming more mature. Many hard plastic products, after introducing elastomer TPE soft material, have improved the touch, grip, aesthetics, and other functional properties of the product.

The overmolding temperature is generally controlled at 30-50°C, but for some TPE grades with strong crystallinity,

To prevent contamination of TPE raw materials and the presence of old materials or impurities in the screw and attachment depressions, especially materials with poor thermal stability, each part should be cleaned with a screw cleaner before use and after shutdown to ensure no impurities adhere.

To achieve the matte appearance of thermoset rubber surfaces, a rougher mold surface is required. Generally speaking, the rough surface produced by electric discharge machining (EDM) of the mold cavity will produce an excellent workpiece appearance and make demolding relatively easy. 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.

Plastic TPR manufacturer

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