Polyethylene terephthalate, or PET, is a versatile thermoplastic material commonly used in the manufacturing of food and beverage packaging, clothing, carpets, and many other consumer goods. It offers excellent strength, durability, and resistance to chemicals and moisture. PET is also recyclable and can be made into sustainable products.

PET polyethylene terephthalate

1. Chemical and physical properties:

The glass transition temperature of PET is about 165C, and the crystallization temperature range of the material is 120~220C. PET has a strong hygroscopicity at high temperatures. For glass fiber reinforced PET materials, it is also very easy to bend at high temperatures. The degree of crystallization of the material can be improved by adding crystallization enhancer. Transparent products processed with PET have gloss and thermal distortion temperature. Special additives such as mica can be added to PET to minimize bending deformation. If a lower mold temperature is used, transparent products can also be obtained using non-filled PET materials.

2. Process characteristics of TPE:

Drying treatment: Drying treatment before processing is a must, because PET has strong hygroscopicity. Recommended drying conditions of 120~165C, 4 hours of drying treatment. The humidity should be less than 0.02%. Melting temperature: For non-filling type: 265~280C; For glass filling type: 275~290C. Mold temperature: 80~120C. Injection pressure: 300~1300bar. Injection speed: Higher injection speeds can be used without causing embrittlement. Runner and gate: All conventional gate types can be used. Gate size should be 50~100% of the thickness of the plastic parts.

3. Typical application range:

Automotive industry (structural components such as mirror boxes, electrical components such as headlight mirrors, etc.), electrical components (motor housing, electrical couches, relays, switches, microwave oven internal components). Industrial applications (pump housings, manual instruments, etc.).

Dongguan Yi Tai Electronic Technologies Co.,Ltd. can provide customers who are in need of TPE products with good price, high quality, durable TPE parts, contact us for a free quote!