Toyochem Co Launches High Moisture-permeable Acrylic Adhesives for Healthcare Field

February 15, 2021

Toyochem Co., Ltd., the polymers and coatings arm of Japan’s Toyo Ink Group, has launched a new healthcare-use line of pressure-sensitive adhesives (PSAs) under its Oribain™ brand of acrylic adhesive solutions.

Toyochem notes the new PSA system addresses the demand for medical tapes and surgical dressing materials that offer high moisture absorbency and breathability, thus minimizing skin maceration and infection. Moreover, the adhesive compositions are based on acrylics – not silicones – so they do contain any substances that may contaminate coating environments or cause costly bonding issues.

Conventional pressure-sensitive acrylic adhesives commonly used in modern medical tapes tend to exhibit low moisture permeability and to easily trap heat and water vapors released from the skin. This often leads to skin irritation, skin maceration, rashes and even bacterial growth. To address this issue, Toyochem researchers applied its advanced resin synthesis technology to form a polymeric composition that substantially raises the moisture permeability rate of the adhesive layer.

Early evaluation testing by our end customers has produced promising results,” said Nao Nakamura, general manager of Toyochem’s adhesives division. “The new Oribain PSA has consistently reached water vapor transmission rates of 2,000g/m2/24 hours. These values are considerably higher than those of traditional acrylic adhesives, which typically range from 500 to 1,000g/m2/24 hours. We were able to do so, all the while maintaining mechanical performance requirements for adhesion and peel strength.”
Moreover, Oribain PSA systems are acrylic-based and do not contain silicones, which are widely used in today’s medical tape adhesives. Thus, the new PSA compositions do not contain any substances that may contaminate coatings lines or processing environments, for a more user- and cost-friendly alternative to silicone types.

In addition to Oribain acrylic PSAs, Toyochem’s comprehensive portfolio includes the Cyabine™ brand of polyurethane PSA solutions, including high moisture-permeability systems. PSA compositions can be customized to meet ISO-10993-1 or other FDA-recognized biocompatibility standards.

Toyochem has been delivering highly reliable adhesive systems for decades, ranking as the #1 manufacturer of sports tape adhesives in China. Production and development centers in both Japan and China have boosted the company’s capability to customize and expand its product offerings to meet the stringent performance demands of the healthcare, packaging and various industrial markets. In line with its growth strategy, Toyochem is now looking to strengthen its presence in the global medical adhesives market, in particular for such applications as dressing and surgical tapes.

 

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