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US7390451: Composite webs and closure systems

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Filing Information

Inventor(s) Byron M. Jackson · Leigh E. Wood · Randall L. Alberg · Dennis L. Becker · Roger D. Pavlis ·
Assignee(s) 3M Innovative Properties Company ·
Attorney/Agent(s) William J. Bond ·
Primary Examiner Monica A Huson ·
Application Number US11426113
Filing date 06/23/2006
Issue date 06/24/2008
Prior Publication Data
Predicted expiration date 03/13/2023
U.S. Classifications 264/214  · 264/177.1  · 264/173.1  ·
International Classifications B29C4126  · B29C4144  · B29C4146  ·
Kind CodeB2
Related U.S. Application DataRELATED APPLICATION
This application is a continuation of U.S. patent application Ser. No. 10/744,141, filed Dec. 22, 2003 now U.S. Pat. No. 7,195,729 that is continuation-in-part U.S. patent application Ser. No. 10/387,699, filed Mar. 13, 2003, now U.S. Pat. No. 7,238,314 which is incorporated herein by reference in its entirety.
47 Claims, 20 Drawings


Abstract

Composite webs having one or more polymeric structures located on a substrate, closure systems comprising composite webs, and methods of attaching articles are disclosed. The polymeric structures are formed using thermoplastic compositions and are attached to a surface of a substrate. The polymeric structures include an area that is attached to the substrate and a detached area that is not attached to a surface of a substrate.

Independent Claims | See all claims (47)

  1. 1. A method for producing a composite web, the method comprising: delivering a molten thermoplastic composition onto an exterior surface of a forming tool that comprises one or more depressions formed in the exterior surface; maintaining the exterior surface of the forming tool at a roll temperature that is below a melt processing temperature of the thermoplastic composition; wiping the molten thermoplastic composition on the exterior surface of the forming tool, wherein some of the molten thermoplastic composition enters the one or more depressions to form polymeric structures therein and the wiping leaves at least some of the molten thermoplastic composition on the exterior surface of the forming tool outside of the one or more depressions forming a base film connecting the polymeric structures on the exterior surface of the forming tool; contacting a first major surface of a substrate to the base film on the exterior surface of the forming tool, wherein the first major surface of the substrate comprises adhesive located thereon, and wherein the base film is adhesively attached to the substrate; and separating the substrate and the base film from the forming tool after the base film is adhesively attached to the substrate, wherein a composite web is formed that comprises the polymeric structures of the thermoplastic composition and the base film, wherein the base film is adhesively attached to the first major surface of the substrate, and wherein the base film comprises a maximum thickness that is less than a maximum thickness of the polymeric structures.
  2. 12. A method for producing a composite web, the method comprising: delivering a molten thermoplastic composition onto an exterior surface of a forming tool that comprises one or more depressions formed in the exterior surface; maintaining the exterior surface of the forming tool at a roll temperature that is below a melt processing temperature of the thermoplastic composition; wiping the molten thermoplastic composition on the exterior surface of the forming tool, wherein some of the molten thermoplastic composition enters the one or more depressions to form polymeric structures therein and some of the molten thermoplastic composition forms a base film connecting the polymeric structures on the exterior surface of the forming tool; contacting a first major surface of a substrate to the base film on the exterior surface of the forming tool, wherein the first major surface of the substrate comprises pressure sensitive adhesive located thereon, and wherein the base film is adhesively attached to the substrate; and separating the substrate and the base film from the forming tool after the base film is adhesively attached to the substrate, wherein a composite web is formed that comprises the polymeric structures of the thermoplastic composition and the base film, wherein the base film is adhesively attached to the first major surface of the substrate; wherein the base film comprises a maximum thickness that is less than a maximum thickness of the one or more polymeric structures; and wherein the thermoplastic composition comprises one or more elastomeric polymeric components such that the polymeric structures on the substrate exhibit elastic behavior.
  3. 13. A method for producing a composite web, the method comprising: delivering a molten thermoplastic composition onto an exterior surface of a forming tool that comprises one or more depressions formed in the exterior surface; maintaining the exterior surface of the forming tool at a roll temperature that is below a melt processing temperature of the thermoplastic composition; wiping the molten thermoplastic composition on the exterior surface of the forming tool, wherein some of the molten thermoplastic composition enters the one or more depressions to form polymeric structures therein, and the wiping leaves at least some of the molten thermoplastic composition on the exterior surface of the forming tool outside of the one or more depressions forming a base film connecting the polymeric structures on the exterior surface of the forming tool; contacting a first major surface of a substrate to the base film on the exterior surface of the forming tool, wherein the first major surface of the substrate comprises pressure sensitive adhesive located thereon, and wherein the base film is adhesively attached to the substrate; and separating the substrate and the base film from the forming tool after the base film is adhesively attached to the substrate, wherein a composite web is formed that comprises the polymeric structures of the thermoplastic composition and the base film, wherein the base film is adhesively attached to the first major surface of the substrate; wherein the base film comprises a maximum thickness that is less than a maximum thickness of the one or more polymeric structures; and wherein the thermoplastic composition comprises one or more elastomeric polymeric components such that the polymeric structures on the substrate exhibit elastic behavior.
  4. 25. A method for producing a composite web, the method comprising: delivering a molten thermoplastic composition onto an exterior surface of a forming tool that comprises one or more depressions formed in the exterior surface; maintaining the exterior surface of the forming tool at a roll temperature that is below a melt processing temperature of the thermoplastic composition; wiping the molten thermoplastic composition on the exterior surface of the forming tool, wherein some of the molten thermoplastic composition enters the one or more depressions to form polymeric structures therein and some of the molten thermoplastic composition forms a base film connecting the polymeric structures on the exterior surface of the forming tool; contacting a first major surface of a substrate to the base film on the exterior surface of the forming tool, wherein the first major surface of the substrate comprises adhesive located thereon, and wherein the base film is adhesively attached to the substrate, wherein at least a portion of the thermoplastic composition in the one or more depressions falls below the melt processing temperature of the thermoplastic composition after the depositing and before the thermoplastic composition in the one or more depressions contacts the adhesive on the first major surface of the substrate; and separating the substrate and the base film from the forming tool after the base film is adhesively attached to the substrate, wherein a composite web is formed that comprises the polymeric structures of the thermoplastic composition and the base film, wherein the base film is adhesively attached to the first major surface of the substrate, and wherein the base film comprises a maximum thickness that is less than a maximum thickness of the polymeric structures.
  5. 36. A method for producing a composite web, the method comprising: delivering a molten thermoplastic composition onto an exterior surface of a forming tool that comprises one or more depressions formed in the exterior surface; maintaining the exterior surface of the forming tool at a roll temperature that is below a melt processing temperature of the thermoplastic composition; wiping the molten thermoplastic composition on the exterior surface of the forming tool, wherein at least some of the molten thermoplastic composition enters the one or more depressions to form polymeric structures in the one or more depressions; contacting a first major surface of a substrate to the thermoplastic composition in the one or more depressions to the exterior surface of the forming tool, wherein the first major surface of the substrate comprises adhesive located thereon, wherein at least a portion of the thermoplastic composition is adhesively attached to the substrate, and wherein at least a portion of the thermoplastic composition in the one or more depressions falls below the melt processing temperature of the thermoplastic composition after the depositing and before the thermoplastic composition in the one or more depressions contacts the adhesive on the first major surface of the substrate; and separating the substrate and the thermoplastic composition from the forming tool after adhesively attaching at least a portion of the thermoplastic composition to the substrate, wherein a composite web is formed that comprises at least a portion of the thermoplastic composition adhesively attached to the first major surface of the substrate.

References Cited

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Referenced By

Document NumberAssigneeInventorsIssue/Pub Date
US7799162 3M Innovative Properties Company Leigh E. Wood et al. Sep 2010
US8227071 3M Innovative Properties Company Leigh E. Wood et al. Jul 2012