What is TPC-ET Polymer

As manufacturing continues to demand ever-increasing material performance, a material that combines mechanical toughness, processing stability, and cross-material compatibility will stand out in many fields. TPC-ET 4057N, a thermoplastic polyester elastomer (TPC-ET polymer) from Toray DuPont, offers outstanding performance in low warpage control and adhesion, meeting the demands for high-precision, durable components in industries such as automotive, electrical, and industrial equipment.

01 | Material Highlights

Excellent substrate adhesion

Strong bonding to a variety of engineering plastics and metal surfaces, making it particularly suitable for overmolding and multi-layer structural parts.

Low warpage and dimensional stability

Low post-molding deformation ensures part flatness and assembly accuracy, even in complex mold structures.

Flexibility and impact resistance

High elongation combined with excellent elastic recovery ensures performance even after repeated impact and deformation.

Abrasion and tear resistance

Significantly extends service life in applications requiring long-term friction and tension.

Wide Temperature Resistance

No brittle cracking at low temperatures, stable performance at moderate to high temperatures, adaptable to diverse climates and operating conditions.

02 | Applications

Automotive

Suitable for wire harness sheathing, flexible seals, covered handles, interior elastic components, and other applications, particularly where weather resistance and surface finish are critical.

Electronic and Electrical Appliances

Can be used for cable sheathing, shock absorbers, and switch coverings, achieving both insulation and durability.

Industrial and Mechanical Equipment

Suitable for components requiring long-term operation and wear resistance, such as protective covers, hoses, sliding parts, and buffer components.

03 | Processing and Processing Characteristics

Multi-Process Compatibility

Suitable for various molding methods, including injection molding, extrusion, and coating, with excellent compatibility with a wide range of plastic substrates.

Balanced Flow and Precision

Moderate melt flowability enables filling complex cavities while ensuring part dimensional stability.

Low Moisture Absorption

Maintains excellent performance in hot and humid environments, minimizing warping or strength loss due to moisture absorption.

04 | TPC-ET Polymer 4057N Data Sheet

05 | Competitive Advantages

Cross-Material Bonding Capability

This material can securely bond with a variety of plastics without additional processing during overmolding, reducing process steps and costs.

Low Risk of Deformation

This material is particularly beneficial for the production of precision parts, reducing post-production trimming and rework.

Global Adaptability

This material can withstand a variety of climates, including those characterized by extreme cold and humidity, making it suitable for export-oriented products.

06 | Customer Feedback

A European automotive interior parts manufacturer reported a 15% increase in first-pass yield for overmolded parts and a significant reduction in warpage after switching materials. A home appliance manufacturer reported that the bond between the overmolded parts and the substrate remained strong in high-humidity environments, with no delamination.

07 | Similar Material Recommendations

08 | FAQ

Q1: Can it be used directly for long-term outdoor exposure?
Yes, but adding UV-resistant modification is recommended to extend its life.

Q2: Is it compatible with overmolding materials like PP and PA?
In most cases, it is, but the effectiveness depends on the process and mold design.

Q3: Can it be used for food contact?
Customized food-grade versions are required based on regulations and certifications.

09 | International Trade Supply Advantages

  ・We have extensive experience exporting engineering plastics and are familiar with international certification and customs clearance processes.

  ・We provide sampling, modification, and color matching services.

  ・Our technical team can optimize production and application solutions for our customers.

  ・Stable global supply channels ensure long-term project supply security.

Keywords: TPC ET polymer

Toray DuPont TPC-ET 4057N combines low warpage, strong adhesion, and excellent mechanical properties, offering a material option that combines easy processing with long-term durability for various industries. It is particularly suitable for the production of high-precision, demanding structural and functional components.

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