3m Innovative Properties Company

Leon Levitt

James J Kobe

Scott J Tuman

Brandon T Berg

Guy D Joly

David L Seidel

Eugene G Joseph

Robert J Maki

Vivek Bharti

John E Riedel

Jason L Edgar

Robert H Menzies

Matthew T Scholz

Babu Nana Gaddam

Alexander J Kugel

Robert D Kampfer

Cathleen M Arsenault

Brian T Hargrett

Alan J Sipinen

Michael D Delmore

Nicholas R Baumann

Stephen E Krampe

Mark E Napierala

Rajan B Bodkhe

Victor P Thalacker

Margie A Crone

Sarah J Moench

Vanessa A Iiams Nelson

Adhesive compositions are described comprising a) a non-functional isobutylene (co)polymer, b) an amine-functional poly(isobutylene) polymer, optionally an acid-functional (meth)acrylate copolymer, and optionally a tackifier.

Isobutylene (co)polymeric adhesive composition

Presently described is an adhesive composition comprising at least one isobutylene polymer and an alkyl amine adhesion promoting agent. The alkyl amine is unreactive with respect to the isobutylene polymer. In favored embodiments, the alkyl amine adhesion promoting agent comprises an alkyl group having 6-24 carbon atoms. Further, the isobutylene polymer is a non-halogenated copolymer or homopolymer. Also described are adhesive articles a pressure sensitive adhesive, as described herein on a backing. The adhesive is particularly suitable for articles intended for use in a wet environment such as kitchen or bath articles.

Adhesives comprising poly(isobutylene) polymers and unreacted alkyl amine

Isobutylene (Co)polymeric adhesive composition

A stem web is disclosed that comprises a backing layer having a first surface and a second surface, and an array of 600 to 20000 upstanding stems projecting from the first surface of the backing. The stems comprise a height from 0.3 and 2.0 millimeters and a shore hardness less than 90A. In one embodiment, the stem web further comprises a reinforcing layer secured to the second surface. In one embodiment, the stem web is secured to a tool to be passed across a surface to be cleaned to capture lint and hair.

Stem web

Friction control articles for use in healthcare applications, the articles generally comprising a backing Layer having a first surface and a second surface, where projecting from the first surface of the backing layer is an array of stems, wherein at least a portion of the exterior surface of the stems comprises an elastomeric material. Also disclosed are friction control articles having a coefficient of friction when dry along at least a portion of the first surface of at least 0.6. Multilayered and dual-sided friction control articles are also provided.

Friction control articles for healthcare applications

Method for making a stem web material having a plurality of stems extending from discrete regions (patches or stripes) of the web, comprising: The stems can be formed by pressing the web on which the patches or stripes of polymer are deposited against a tool having a surface with a plurality of stem-forming holes. The stems can be given enlarged ends by bringing the surface of the stem web close to a heated surface.

Method for making a stem web

A friction control article including a backing layer having a first surface with an array of at least 100 upstanding stems per square inch and a second surface. At least a portion of the upstanding stems is an elastomeric material and the stems have an aspect ratio of at least 1.25. The first surface has a static coefficient of friction when dry of at least 0.6 and a static coefficient of friction when wet within 20% of the static coefficient of friction when dry. The first surface has a peel strength and a tensile strength of substantially zero when engaged with another slip control article. The first surface has a relatively high shear strength when engaged with another slip control article. The high shear forces are due primarily to the frictional properties of the elastomeric materials, not a mechanical interlock of the stems, such as on a mechanical fastener.

Method for defining a frictional interface

A laminated composite suitable for use in medical products such as tapes and wraps. The composite includes, for example, a first nonwoven fiber layer, an elastic layer, a melt blown adhesive fiber layer, and a second nonwoven fiber layer. A scrim layer serves as a deadstop, or stretch limit, to prevent over stretching. The non-woven fiber layer(s) and/or the scrim layer form suitable loops for a hook and loop fastening system. The scrim layer in some embodiments is employed to make the composite finger tearable. The melt blown adhesive layer, nonwoven web layer and elastic layer form a breathable, porous elastic composite. Methods of manufacturing the composite are also disclosed.

Laminated composites

Friction control article for wet and dry applications

A method and apparatus for forming a mechanical fastener. A preferred embodiment of the method includes moving a substrate along a web path, where the substrate includes a first major surface and a plurality of stems extending from the first major surface of the substrate and each of the stems includes a stem end, radiantly heating the stem ends to form softened ends, and thereafter deforming the softened ends into convex heads with a deformable surface. A preferred embodiment of the apparatus includes a web conveyor, where the web conveyor defines a web path, a heating source located adjacent the web conveyor and a deformable surface located down the web path from the heating source, where the deformable surface includes a durometer hardness of greater than 10 Shore OO and less than 70 Shore A.

Apparatus and method for making a mechanical fastener

An elastic web of material has a multiplicity of stems extending from at least one side of the web. The web includes a first continuous layer of elastic material having a first side and a second side and a second layer of material. The second layer of material has a first side which faces the first side of the first layer and a second side from which the stems extend. The first and second layers of material are joined together. The second layer of material can be formed of thermoplastic material or melt processable polymeric material. The first and second layers of material are melt formed. They are joined by coextrusion or lamination to form a multiple layer sheet on which a multiplicity of stems are formed on at least the second layer by a process such as embossing the stems into the heated web using a patterned roll or mold.

Elastic fastener

A slip control article including a backing layer having a first surface with an array of at least 100 upstanding stems per square inch and a second surface. At least a portion of the upstanding stems is an elastomeric material and the stems have an aspect ratio of at least 1.25. The first surface has a static coefficient of friction when dry of at least 0.6 and a static coefficient of friction when wet within 20% of the static coefficient of friction when dry. The first surface has a peel strength and a tensile strength of substantially zero when engaged with another slip control article. The first surface has a relatively high shear strength when engaged with another slip control article. The high shear forces are due primarily to the frictional properties of the elastomeric materials, not a mechanical interlock of the stems, such as on a mechanical fastener.

Slip control article for wet and dry applications

A mechanical fastener including a plurality of engaging stems located in unordered arrangements, which repeat on a substrate. A preferred embodiment of the invention provides a mechanical fastener with a plurality of repeating unordered arrangements, where the arrangements repeat in more than one direction. The unordered arrangements of the engaging stems allow pairs of the fasteners to interengage with themselves, or in other words, to self-mate. Additionally, the unordered arrangements of engaging stems allow the fasteners to interengage at any relative angular orientation with a relatively constant engagement force, and a relatively constant disengagement force regardless of their angular orientation. The unordered arrangements of engaging stems also allow pairs of fasteners to interengage at any relative planar position with a relatively constant engagement force and a relatively constant disengagement force regardless of their planar position.

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Mendota Heights, MN, United States of America

Leon Levitt