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HomeToyochem Co Ltd.Toyochem Develops Soft Skin Polyurethane-based Pressure-Sensitive Adhesives

Toyochem Develops Soft Skin Polyurethane-based Pressure-Sensitive Adhesives

February 24, 2021

Toyochem Co. has released a new line of “Soft Skin” polyurethane-based pressure-sensitive adhesives (PSAs) designed to meet the growing demand for safe, low-trauma medical devices formulated for sensitive skin individuals. Suitable applications include surgical tapes and dressing films customized for the medical and healthcare fields.

The new adhesive system offers high moisture permeability and low skin exfoliation for pain-free removal or repositioning of the adhesive material. In addition, the new compositions do not contain silicones or other substances that may contaminate coatings lines or processing environments.
Drawing on its expertise in urethane chemistry in the development of protective films for the electronics industry, Toyochem engineered a medical-grade urethane composition with a uniquely soft and flexible urethane-based composition. The product adheres well to the skin while causing very low trauma to the keratin layer when the dressing is removed or repositioned. “The challenge is finding the right balance between adhesion and release,” said Nao Nakamura, general manager of Toyochem’s adhesives division.
Nakamura added, “Materials for medical devices and dressing must have the elasticity to conform to skin surfaces and movement in order to prevent water, dirt, or bacteria from entering and infecting the wound. They also need to have the right amount of release to prevent trauma to the tender skin surrounding it. With the new development, we’re able to strike a fine balance that meets both requirements.”
Moreover, Toyochem’s new urethane PSA system demonstrates exceptional moisture permeability with water vapor transmission rates of 2,000g/m2/24 hours, achieving values that are considerably higher than those of conventional acrylic PSAs. Poor moisture permeability can trap heat and water vapors between the skin and adhesive layer, often leading to skin irritation, maceration, and even bacterial growth. Toyochem’s PSA product, however, is designed to substantially raise the water vapor transmission ability of the adhesive layer, allowing moisture to be evaporated to the outside of the adhesive material.
At present, silicones are widely used in the manufacturing of wound management devices, due to their biocompatibility. The new PSAs from Toyochem, however, is silicone-free and have been proven safe for human skin contact. They can be customized to meet International Standards ISO 10993-1, making it a more user- and cost-friendly alternative to silicone adhesives.
Medical Device News Magazinehttps://infomeddnews.com
Medical Device News Magazine is a division of PTM Healthcare Marketing, Inc. Pauline T. Mayer is the managing editor.

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