Adhesive tape and method of making
Assignee3M Innovative Properties Company
InventorsGerald S. Deeb, Dennis L. Krueger, Robert H. Menzies, Herbert W. Morris, Patrick D. Hyde, Felix P. Lau, Eumi Pyun, Pamela S. Tucker, Roy Wong
Life of this patent
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Abstract
An adhesive tape is provided which comprises a woven cloth, a polymer embedded into the cloth so as to cause the warp and weft fibers of the cloth to bond together at their overlapping points but not to completely encase the fibers, and a pressure sensitive adhesive coated onto at least a portion of the polymer, wherein the adhesive tape is hand tearable in the down-web and in the cross-web direction. A method of manufacturing such a tape is also provided.
Claims26
An adhesive tape comprising:
- a substrate comprised of regularly spaced fibers in the down-web and cross-web directions wherein said fibers are not woven,
- a polymer coated and embedded into said substrate such that the warp and weft fibers are securely bonded at their overlap points but said fibers are not completely encased with said polymer, and
- a pressure sensitive adhesive coated onto at least a portion of said polymer, wherein the adhesive tape is hand tearable in the down-web and in the cross-web direction.
A composite backing, comprising:
- a woven or nonwoven substrate cloth comprised of fibers oriented in a down-web and a cross-web direction, and having a first side and a second side,
- a polymer on said second side of said substrate cloth and said polymer embedded into said cloth such that the overlapping fibers of said substrate cloth are bound together but said polymer does not extend through to said first side of said cloth,
- and wherein said resulting composite backing is hand tearable along a substantially straight line in a down-web and in a cross-web direction without fraying.
An adhesive article useful for medical applications, comprising:
- a woven or nonwoven substrate comprised of fibers oriented in a down-web and a cross-web direction, and
- a polymer embedded into said substrate to cause the fibers of said substrate to bond without completely encasing the fibers, and
- a pressure sensitive adhesive having a T.sub.0 of at least 1 N/dm and a T.sub.48 of less than 12 N/dm when adhered to skin as defined by the Skin Adhesion Test as defined herein and wherein said article is hand tearable in a substantially straight line without fraying.
Dependencies are inferred from the claim text.