Benefits of Hubei Pet Toy TPR

TPE overmolding (injection bonding) generally uses a two-shot injection process,

Transparent TPE is used in appliance housings, handles, grips, etc., offering excellent tactile feel, anti-slip and effort-saving properties, and is easy to color and process, with a wide design space.

Transparent grades are divided into clear and translucent series, each with various hardness levels; excellent transparency; smooth and soft surface; good yellowing resistance, tear resistance, and tensile strength; environmentally friendly; suitable for various transparent series products.

Pet toy TPR

The pre-molded (injected) rigid plastic part is fixed in the overmolding mold, and then at the appropriate temperature, TPE soft rubber is injected and bonded onto the rigid part, and cooled to obtain the product. The injection temperature for overmolding depends on the rigid material being overmolded.

The key point in TPE overmolding (two-shot injection) is to achieve good adhesion between TPE and the substrate materials like 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 fields. Thermoplastic elastomer, also called TPE material, not only has the processing properties of thermoplastics but also the physical properties of vulcanized rubber. This is the advantageous combination of plastics and rubber. Transparent TPE is widely used in people's daily life and production.

Transparent TPE, specifically speaking, is a 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.

Pet toy TPR

According to the chemical principle of like dissolves like, the key is that TPE and the substrate must have similar polarity to allow molecular chain-level fusion between TPE and the substrate.

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

The thickness of TPE/TPR overmolding layer. In most overmolding applications, a wall thickness range of 1.5-3.0mm can ensure good adhesion. If the TPE layer is too thin, injection is difficult, adhesion strength is low, and feel is poor. If the TPE layer is too thick, on one hand the cost is higher, on the other hand it is prone to shrinkage, bubbles and other defects.

Transparent TPE is used in appliance housings, handles, grips, etc., offering excellent tactile feel, anti-slip and effort-saving properties, and is easy to color and process, with a wide design space.

Pet toy TPR

The mold temperature can be appropriately raised to 70°C, which is beneficial for adhesion and can also obtain a more glossy overmolding surface.