Kuraray TPE

Updated: 2026-07-15

Overview

Kuraray TPE is a premium thermoplastic elastomer produced by Kuraray Co., a Japanese chemical manufacturer renowned for its advanced polymer technologies. TPEs bridge the gap between vulcanized rubber and rigid plastics, offering processability via injection molding or extrusion while maintaining elasticity. Kuraray’s SEBS-based TPEs are particularly valued for their balance of mechanical strength and soft-touch aesthetics. These materials are engineered for industries demanding precision and reliability, such as automotive components (e.g., weatherstripping) and medical devices (e.g., tubing). Unlike conventional rubbers, Kuraray TPEs can be recycled, aligning with sustainability goals. Their versatility also extends to consumer products like toothbrush grips and ergonomic tool handles.

Physical and Chemical Properties

Kuraray TPEs exhibit a unique combination of rubber-like elasticity and thermoplastic behavior, allowing them to be melted and reshaped multiple times. Typical hardness ranges from Shore A 10 to 90, catering to applications from ultra-soft gels to semi-rigid components. The material’s density is lower than many competing elastomers, reducing weight in finished products. Chemically, SEBS-based TPEs resist water, alcohols, and dilute acids, making them suitable for hygiene and medical applications. However, they may swell in hydrocarbons. Grades with UV stabilizers are available for outdoor use, such as automotive exterior parts. Thermal stability generally spans -40°C to 100°C, though some high-performance variants withstand higher temperatures.

Main Applications

In the automotive sector, Kuraray TPEs are used for vibration-damping mounts, window seals, and interior trim due to their noise reduction and durability. Medical grades comply with ISO 10993 standards for skin contact, enabling use in catheter tubes and syringe plungers. Consumer goods leverage TPEs for non-slip surfaces in kitchenware and wearable devices. Packaging applications include tamper-evident caps and soft-touch cosmetic containers. Industrial uses encompass conveyor belts and cable insulation, where flexibility and electrical resistance are critical. Recent innovations include optically clear TPEs for touchscreen components.

Safety and Storage

Kuraray TPEs are generally safe under normal handling conditions, with most grades meeting FDA and EU food contact regulations. Dust inhalation during pellet processing should be minimized using proper ventilation. Process temperatures above 200°C may release volatile compounds, requiring exhaust systems. Storage recommendations include keeping bags sealed in a dry environment to prevent moisture absorption, which can affect processing. Pellets should not be exposed to direct sunlight for prolonged periods to avoid UV degradation. For fire safety, TPEs are self-extinguishing but may emit smoke when burned.

B2B Procurement Guide

When sourcing Kuraray TPE, buyers should specify technical requirements such as hardness, tensile strength (typically 5–30 MPa), and elongation at break (200–800%). Medical or food-contact applications demand certificates like USP Class VI or EU 10/2011 compliance. Volume discounts are common for orders exceeding 1 metric ton. Lead times vary by grade but average 4–8 weeks. Consider regional distributors for faster delivery, especially in North America and Europe. For prototyping, request samples with technical datasheets to test compatibility with your molding equipment. Environmental certifications like REACH or RoHS may be required for electronics applications.