Product Releases

Durable, Colorable, Elastomers Are Proven Safe for Skin Contact in Wearable Electronics

Tue, 07/29/2014 - 11:43am

MIDLAND, Mich. – Dow Corning announced that its TPSiV 4000 and TPSiV 4200 Thermoplastic Elastomers (TPEs) have been shown to be safe for skin contact applications in two independent medical test protocols. The results offer strong independent validation that these industry-leading materials are an excellent option for skin-safe wearable electronics applications, such as wrist bands for smart watches and fitness trackers, as well as for device accessories such as ear buds.

In vivo testing, performed in accordance with the United States Pharmacopeia's (USP) General Chapter, Biological Reactivity protocol, confirmed that TPSiV 4000 and TPSiV 4200 Elastomers both lack cytotoxic potential and show no potential for systemic toxicity and skin irritation. This indicates that both products are safe for long-term skin contact, which is an important criteria for materials targeting the fast-growing market for wearable electronics. The company is performing additional testing on these materials under ISO 10993-10-2010 protocols for skin sensitivity.

A unique hybrid of Thermoplastic Polyurethane (TPU) and crosslinked silicone rubber, TPSiV materials combine the durability, abrasion resistance and overmolding options of TPUs, with the softness and resistance to ultraviolet light and chemicals offered by silicone technology. TPSiV elastomers can be precisely color-matched to customer specifications and maintain their excellent, long-lasting aesthetics even for the most demanding wearable device applications. Wearable device manufactures can take advantage of TPSiV Elastomers' flexibility and silky soft feeling to increase comfort for consumers.

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