3m Innovative Properties Company

Minnesota Mining and Manufacturing Company

Steven C Stickels

Scott A Burton

Matthew T Scholz

Eugene G Joseph

Peter M Seiler

Babu Nana Gaddam

Kevin Michael Lewandowski

Wayne K Dunshee

Duane Douglas Fansler

Ahmed Salih Abuelyaman

Maureen Ann Kavanagh

Stephen E Krampe

Ashish Kumar Khandpur

Paul Hattam

Randy A Hoff

Anthony R Clanton

Kenneth C Williams

Medical articles including an absorbent layer, a backing layer and an optional liquid permeable facing layer are disclosed. The construction of the medical article is such that volumetric expansion of the absorbent layer is allowed in directions parallel to the surface of the backing layer as the absorbent layer absorbs moisture. The medical article may include a debonding agent located between the absorbent layer and the backing layer. The absorbent layer is operably attached to the backing layer. When the absorbent layer absorbs moisture, e.g., wound exudate, at least a portion of the absorbent layer detaches from the backing layer such that the absorbent layer can expand and move relative to the backing. The debonding agent facilitates this change from attachment to detachment of the absorbent layer to the backing. The medical articles of the present invention may also be constructed such that a portion of the front surface of the backing layer located directly opposite the absorbent layer is free of adhesive. The adhesive free area or areas may be provided in place of a physical debonding agent or in addition to a physical debonding agent.

Absorbent medical articles

A gel material and medical articles including such material, wherein the transparent gel material includes a polymerized poly(alkylene oxide) macromonomer that, prior to polymerization, is free-radically polymerizable, multifunctional (preferably difunctional), and has an average molecular weight of at least about 2000.

Gel materials, medical articles, and methods

An absorbent dressing comprising a hydrophilic gel absorbent layer having a patterned surface on at least one major surface thereof is provided. The patterned surface allows greater surface area for absorption of wound exudate when oriented toward the wound surface, while reducing the absorbent surface area in direct or indirect contact with the wound.

Patterned absorbent article for wound dressing

There is provided pressure-sensitive adhesive coated breathable nonwoven tape backing substrate where the nonwoven tape backing comprises a fibrous nonwoven web formed in part by multicomponent fibers having an adhesive component region. The multicomponent fibers are distributed throughout the width dimension of the nonwoven tape backing such that adhesive component region is exposed on both outer faces of the nonwoven tape backing. The adhesive component region is preferably a pressure-sensitive adhesive region formed by hot melt coextrusion of at least two components to form the multicomponent fibers. A pressure-sensitive adhesive tape layer is coated onto at least one face of the nonwoven tape backing which pressure-sensitive adhesive tape layer is preferably of the same type of adhesive as that forming the adhesive region of the multicomponent fiber or is at least compatible with the adhesive region of the multicomponent fiber such that the adhesive has enhanced adhesive properties to the pressure-sensitive adhesive tape layer.

Breathable backing for an adhesive article

The present invention provides fibers and products produced therefrom, including nonwoven webs and adhesive articles. The fibers, which can be multilayer fibers, include a pressure-sensitive adhesive composition comprising an acrylate copolymer comprising copolymerized monomers comprising at least one monofunctional alkyl (meth)acrylate monomer and at least one monofunctional free-radically copolymerizable reinforcing monomer having a homopolymer glass transition temperature higher than that of the alkyl (meth)acrylate monomer.

Acrylate copolymeric fibers

An adhesive sheet article comprising a porous backing coated on one side with a polymeric migration barrier and said migration barrier is further coated with a pressure-sensitive adhesive to provide novel adhesive tape articles. A method of manufacturing such articles is also disclosed.

Adhesive sheet articles

Growing community of inventors

Woodbury, MN, United States of America

Steven C Stickels