3m Innovative Properties Company

Yoshiteru Kakinuma

Aizoh Sakurai

Junkang Jacob Liu

Yorinobu Takamatsu

Siegfried K Welke

Hiroko Akiyama

Bing Liu

Hironobu Ishiwatari

The disclosed adhesive sheet exhibits high anchoring performance and where separation between the substrate and the adhesive layer substantially does not occur when unwinding or re-peeling in actual applications. The adhesive sheet comprises a substrate including a urethane polymer component at least at a portion of a surface and a silicone adhesive layer that is in contact with the urethane polymer component, wherein the urethane polymer having a chain extender-derived hard segment and a polyoxyalkylene polyol-derived soft segment.

Adhesive sheet

An articleis provided with an adhesive layerthat includes an adhesive, a release layerthat is stacked on the adhesive layer, and an air layerthat is interposed between the adhesive layerand the release layer. On a surfaceof the release layerthat opposes the adhesive layer, microprotrusionsthat contact the adhesive layerwith tipsare provided. The microprotrusionsare provided with a wall-shaped portionhaving a shape that at least partially surrounds the air layerbetween the adhesive layerand the release layer. The wall-shaped portionprotects a main portionof the adhesive layerthat is adjacent to the air layerfrom contamination. By selecting a shape, dimensions, and the like of the micro protrusions, a release force of the release layercan be adjusted to a desired range.

Article provided with adhesive layer and release layer

Siloxane-based gel compositions are prepared from room temperature condensation curable mixtures that include 0.5-45% by weight silicone resin with at least two hydroxyl groups, 99.5-55% by weight of at least one silanol-terminated siloxane fluid, and a co-curable compound with an amino group. The siloxane-based gel compositions can be used as adhesives or sealants in medical articles.

Room temperature curable siloxane-based gels

An adhesive composition is disclosed that comprises acrylic adhesive particles having an average diameter of 10 to 100 micrometers obtained by suspension polymerization of an acrylic monomer mixture which comprises a branched C 14-22 alkyl group containing (meth)acrylate and a polar monomer. The adhesive composition may be applied to an adhesive dressing or patch. The adhesive has excellent water vapor permeability, excellent adhesion to skin with low skin irritation when applied, less adhesive residue after peeling, and less keratin damage. The adhesive does not cause wetness or peeling from sweat while being worn.

Growing community of inventors

Tokyo, Japan

Yoshiteru Kakinuma