Elastomeric laminates with microtextured skin layers

• US 5,501,679 A
• Filed: 03/30/1990
• Issued: 03/26/1996
• Est. Priority Date: 11/17/1989
• Status: Expired due to Term

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Company
• Inventors: Bartusiak, Joseph T., Capik, Karen M., Hanschen, Thomas P., Krueger, Dennis L.
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): FLANAGAN, BEVERLY MEINDL
• Application Number:
  US07/503,716
• Time in Patent Office: 2,188 Days
• Field of Search: 604/385.2, 604/389, 604/390, 604/393, 428/152, 428/198, 428/230, 428/231, 428/343, 428/354, 428/373, 428/375, 428/376
• US Class Current: 604/393
• CPC Class Codes: A61F 13/15585 of babies' napkins, e.g. diapers A61F13/15617 - A61F13/15804 take precedence
• CPC Class Codes: B29C 55/023 using multilayered plates or sheets
• CPC Class Codes: B29C 59/00 Surface shaping of articles, e.g. embossing; Apparatus therefor in-mould printing B29C37/0025; by using liquids B29C71/0009; by using gases without chemical reaction B29C71/009; for decorating in general B44; abrasive blasting B24C; chemical aspects C08J7/00
• CPC Class Codes: B32B 2307/402 Coloured
• CPC Class Codes: B32B 2432/00 Cleaning articles, e.g. mops, wipes personal care B32B2555/00
• CPC Class Codes: B32B 2437/00 Clothing anti-ballistic clothing B32B2571/02
• CPC Class Codes: B32B 25/08 of synthetic resin
• CPC Class Codes: B32B 25/14 comprising synthetic rubber copolymers B32B25/18 and B32B25/20 take precedence
• CPC Class Codes: Y10S 428/91 Product with molecular orientation
• CPC Class Codes: Y10T 428/24446 Wrinkled, creased, crinkled or creped
• CPC Class Codes: Y10T 428/28 Web or sheet containing structurally defined element or component and having an adhesive outermost layer
• CPC Class Codes: Y10T 428/2848 Three or more layers

Abstract

Microtextured elastomeric laminates comprising at least one elastomeric layer and at least one thin skin layer is preferably prepared by coextrusion of the layers followed by stretching the laminate past the elastic limit of the skin layers and then allowing the laminate to recover.

Claims

1. A garment comprising a body engaging area said body engaging area comprising an elastomeric laminate comprising at least one discrete elastomeric layer and at least two discrete continuous skin layers at least one of which is a microtextured permanently deformed polymeric layer wherein the materials forming the elastomeric layer and the materials forming the polymeric layer are selected such that said at least one elastomeric layer and said at least one microtextured skin layer are in continuous contact.

2. The garment of claim 1 comprising a diaper wherein said body engaging area is a waist engaging area.

3. The garment of claim 1 comprising a diaper wherein said body engaging area is a leg engaging area.

4. The garment of claim 1 comprising a diaper wherein said body engaging area is a hip engaging area.

5. The garment of claim 1 wherein:

(a) said elastomeric laminate is a film and

(b) each layer has a substantially constant thickness across the width of said film.

6. The garment of claim 1 wherein the width of said laminate will decrease by less than 20% when restretched to the extent of permanent deformation of the previously deformed microtextured skin layer.

7. The garment of claim 1 wherein the surface area of the microtextured skin layer is at least 50% greater than a corresponding untextured surface.

8. The garment of claim 1 wherein the microtextured surface formed comprises folds.

9. The garment of claim 1 wherein the laminate is multiaxially stretched.