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Toyochem: High Moisture-Permeable Acrylic Adhesives for Healthcare Field

Designed for healthcare applications, adhesives achieve up to 4x the water vapor permeation rate of conventional acrylic PSAs.

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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.

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.

The company reports that the new Oribain PSA has consistently reached water vapor transmission rates of 2,000g/m2/24 hours, considerably higher than those of traditional acrylic adhesives, which typically range from 500 to 1,000g/m2/24 hours.

Mechanical performance requirements for adhesion and peel strength were maintained.

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.

 

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