3M Innovative Properties Company

Robert W Shipman

Jayshree Seth

Leigh E Wood

Dennis L Krueger

Jeffrey O Emslander

Dennis G Welygan

Patrick Darby Hyde

Louis S Moren

David James Yarusso

Alan J Sipinen

Eumi Pyun

Pamela S Tucker

Roy Wong

William C Unruh

Robert D Kampfer

Felix P Lau

Francis V Loncar, Jr

Mark R Dupre

Diane L Regnier

William H Hartt

John E Cejka

A pressure-sensitive adhesive comprising a blend of at least two components, wherein the first component is at least one pressure-sensitive adhesive and the second component is at least one thermoplastic material, wherein the components form a blended composition having more than one domain and, wherein one domain is substantially continuous (generally, the pressure-sensitive adhesive) and the other domain is substantially fibrillous to schistose (generally, the thermoplastic material). The second component can be (a) at least one thermoplastic elastomer, (b) at least one elastomer with a tackifying resin or (c) at least one elastomer.

Blended pressure-sensitive adhesives

A web of material has a plurality of stems extending from at least one side of the web. The web includes a first layer of 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 plurality of stems extend. The first and second layers of material are joined together while they are both molten, before either layer has cooled. The first and second layers of material can be formed of thermoplastic material or melt processable polymeric material. A method of making a web of material includes selecting a first material for a first layer of material and selecting a second material for a second layer of material. The first and second layers of material are melt formed. Then, the first and second layers of material are joined while the layers are in the molten state to form a multiple layer sheet. Next, a plurality of stems are formed on at least the second layer of material. Melt forming can include simultaneously melt forming the first and second layers of material such as by coextrusion.

Coextruded mechanical fastener constructions

Growing community of inventors

Oakdale, MN, United States of America

Robert W Shipman