SBS-based

R Series | High Elastic Transparent Thermoplastic Elastomers (TPEs)

The R Series is a high-elastic, transparent Thermoplastic Elastomer (TPE) developed based on SBS (Styrene-Butadiene-Styrene). It is specifically engineered for applications requiring high elongation, rapid recovery, and long-term dynamic durability.
Compared to the H Series, which emphasizes balanced physical properties, and the T Series, which focuses on soft-touch performance, the R Series is designed for repetitive stretching, bending, and high-frequency dynamic use. It is particularly suitable for elastic structural components that require long-term operation without permanent deformation.

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Why Choose R Series?

The R Series is not designed solely for softness or transparency. Instead, it prioritizes elastic lifespan and rebound efficiency, enabling products to achieve:

Structural integrity under high deformation conditions
Fast recovery with minimal permanent deformation
Stable elasticity in long-term dynamic environments
A combination of transparency with dynamic visual elasticity

Material Properties and Advantages

SBS-Based High Elastic Structure
Excellent elongation and fast recovery, ideal for dynamic applications
High Elongation Rate
Elongation range of approximately 550–850%, supporting large deformation designs and repeated stretching
Superior Resilience & Fatigue Resistance
Maintains excellent rebound performance after repeated stretching and bending, with strong resistance to fatigue
Transparent Appearance
Offers clear visual quality combined with elastic aesthetics
Stable Processing Performance
Suitable for injection molding and extrusion production
Hardness Range
Shore A approx. 10A–88A
Good Flowability & Molding Stability
Safe & Compliant
Non-toxic and odorless; compliant with FDA, RoHS, REACH, and PAHs regulations

Typical Applications

Dynamic Elastic Components

Sports equipment elastic parts
High- frequency use structural components

Grip & Anti-Slip Applications

Handles and grips
Anti-slip components

Soft Protection & Overmolding

Bottle cap sealing liners
Flexible tubing

Protective and overmolded parts

Footwear & Elastic Support

Midsole materials
Elastic support structures

Applicable processing methods

R Series transparent TPEs are suitable for:

Injection Molding
Extrusion Molding

Its excellent fatigue resistance helps reduce product failure risks caused by material aging or elasticity degradation, making it especially suitable for high-usage, mass-production applications.

Summary

The R Series High Elastic Transparent TPE is a high-performance material solution designed for dynamic applications involving repeated stretching and rapid recovery. It serves as an effective alternative to silicone and certain TPU materials.

If you are looking for high-rebound TPE, high-elongation materials, or transparent elastomers for dynamic applications, the R Series offers an optimal balance of performance, processing efficiency, and cost-effectiveness.

Specification

Test Item	Test Method	Unit	Specification
Test Item	Test Method	Unit	R10AN	R25AN	R35AN	R45AN	R55AN	R60AN	R88AN
Density	ASTM D792	g/cm³	0.9±0.03	0.9±0.03	0.9±0.03	0.9±0.03	0.9±0.03	0.9±0.03	0.9±0.03
Hardness	ASTM D2240	Shore A	10±3	25±3	35±3	45±3	55±3	60±3	88±3
Tensile Strength	ASTM D412	Kg/cm²	11	10	10	31	33	60	70
Elongation	ASTM D412	%	850	630	560	560	730	800	700
Tear Strength	ASTM D624 Die C	Kg/cm²	2.5	3	3	5	15	15	15
Resistance to High Temperature Aging	ASTM D573 136°C 7D	% TB/EB	73/75	73/75	73/75	65/67	67/70	73/75	73/75
Rebound Elasticity	CNS K1392	%	78	86	86	75	80	80	80
Heat Resistance	W-O-M 63°C 500hrs	% TB/EB	80/85	80/85	80/85	65/67	65/67	80/85	80/85
Brittle Temperature	ASTM D746	°C	-40	-40	-40	-40	-40	-40	-40