How to Select a Fujian Bracelet Material TPE Supplier

In the elastomer industry, TPE generally refers to composite functional materials modified from SEBS.

Transparent TPE materials have different product properties depending on the application. Thermoplastic elastomer, also known as TPE material, transparent TPE not only has the processing properties of thermoplastics, but also the physical properties of vulcanized rubber. This is the so-called advantage combination of plastic and rubber. Transparent TPE is widely used in people's daily life and production.

To achieve the matte appearance of thermoset rubber surfaces, a rougher mold surface is required. Generally speaking, the rough surface produced after Electrical 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, shot blasting, and chemical etching can also be used to produce surfaces with different gloss and appearance.

Bracelet Material TPE Supplier

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

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

To prevent contamination of TPE raw materials and the presence of old materials or impurities in the screw and attachment recesses, especially materials with poor thermal stability, the screw cleaner should be used to clean all parts before use and after shutdown to ensure no impurities adhere.

Olefin transparent TPE has excellent weather resistance and ozone resistance, so it is called the fastest-growing variety of TPE. It is mainly used as a major rubber material in fields such as automobiles and home appliances.

Bracelet Material TPE Supplier

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

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

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

Due to the high light transmittance of transparent TPE materials, strict requirements are imposed on the surface quality of the product. No defects such as streaks, air bubbles, whitening, halo, black spots, discoloration, or poor gloss are allowed. Therefore, throughout the injection molding process, close attention must be paid to the TPE raw materials, equipment, mold, and even product design, and strict or even special requirements must be put forward.

Bracelet Material TPE Supplier

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