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US 2006/0220271 A1Published application
Composite webs and closure systems
Assignee3M Innovative Properties Company
InventorsByron Jackson, Leigh Wood, Randall Alberg, Dennis Becker, Roger Pavlis
Life of this patent
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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.
Claims27
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;
- 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.
3 more elements
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.
5 more elements
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, and wherein at least a portion of the thermoplastic composition is adhesively attached to 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.
3 more elements
Dependencies are inferred from the claim text.