UB-302 Melting Point: 130±5°C

Ubest provides customized production of low melting point PET resin, with a controllable melting range from 110°C to 240°C. The formulation can be adjusted according to different application requirements, enabling flexible performance tuning for various industrial uses.

This low-melting polyester material is widely applied in textiles, building materials, coatings, shoe materials, hot melt adhesives, masterbatches, film processing, and engineering applications.

1. Masterbatch-Grade Low Melting PET Chips

This type is designed for masterbatch processing and color carrier applications. It features:

• Fast melting behavior

• Excellent melt flow and pigment dispersion

• Uniform and stable coloration performance

It is especially suitable as a polyester dye carrier in high-speed spinning processes such as POY and FDY, delivering:

• High color fastness

• Strong color saturation

• Bright and consistent coloration results

2. Spinning-Grade Low Melting PET

For fiber and yarn production, this material offers improved processing stability:

• High viscosity and stable spinning performance

• Good crystallization behavior

• Suitable for full-melt yarn and sheath-core composite yarn structures

Its controlled crystallization helps reduce adhesion issues during dyeing processes. The narrow melting range ensures more uniform dye uptake and consistent fiber quality.

To address dyeability challenges in conventional PET, Ubest also offers copolyester grades with improved dye affinity, which enhance dyeing efficiency under normal temperature and pressure conditions.

3. Film-Grade Low Melting PET

This grade is suitable for heat shrink and heat sealing film production, offering:

• Heat shrink film shrinkage rate: 30%–65%

• Uniform shrinkage performance

• Low warpage and reduced crystal point defects

For heat sealing film applications, it provides:

• Strong sealing performance

• Good printability and surface compatibility

4. Coating-Grade Low Melting PET

Used in polyester coating systems to enhance coating performance and processing flexibility.

Key features include:

• Adjustable molecular weight and melting point based on customer requirements

• Low B value

• Low hydroxyl value

• Low acid value

These properties contribute to improved coating stability and consistency.

5. Additional Application Areas

Beyond the above categories, low melting point PET resin is also widely used in:

• Shoe material production

• Hot melt adhesive systems

• Building and construction materials

• Engineering plastics modification

Summary

Ubest low melting point PET resin is a versatile copolyester material designed for multi-industry applications. With adjustable melting points, stable processing behavior, and customizable performance parameters, it provides reliable solutions for textile, film, coating, and adhesive industries in industrial-scale production environments.