Elastomeric tapes with microtextured skin layers

• US 5,354,597 A
• Filed: 12/04/1992
• Issued: 10/11/1994
• Est. Priority Date: 03/30/1990
• Status: Expired due to Term

• Current Assignee: 3M Company
• Original Assignee: 3M Company
• Inventors: Capik, Karen M., Delgado, Joaquin, Krueger, Dennis L.
• Primary Examiner(s): Davis, Jenna L.
• Application Number:
  US07/985,740
• Time in Patent Office: 676 Days
• Field of Search: 428/152, 428/198, 428/230, 428/231, 428/343, 428/354, 604/385.2, 604/389, 604/390
• US Class Current: 428/152
• CPC Class Codes: A61F 13/58 Adhesive tab fastener elements A61F13/5611, A61F13/5616, A61F13/66 take precedence
• CPC Class Codes: B05B 12/24 made at least partly of flexible material, e.g. sheets of paper or fabric
• CPC Class Codes: B29C 55/023 using multilayered plates or sheets
• CPC Class Codes: B29C 61/00 Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor for surface shaping B29C59/18; for lining articles B29C63/38; for joining preformed parts B29C65/66 ; for packaging B65B53/00; connecting arrangements or other fittings for plastics pipes using shrink-down material F16L47/22, electrical connections insulated using heat shrinking insulating sleeves H01R4/72; cable junctions protected by sleeves H02G15/18
• CPC Class Codes: B29C 61/0616 layered or partially layered preforms, e.g. preforms with layers of adhesive or sealing compositions B29C61/0625 and B29C61/065 take precedence
• CPC Class Codes: B32B 25/08 of synthetic resin
• CPC Class Codes: C09J 2301/162 the carrier being a laminate constituted by plastic layers only
• CPC Class Codes: C09J 2301/308 the adhesive tape or sheet losing adhesive strength when being stretched, e.g. stretch adhesive
• CPC Class Codes: C09J 7/29 Laminated material metallised plastics C09J7/22
• 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 laminate tape comprising a laminate with at least one elastomeric layer and at least one thin skin layer, and an adhesive layer, 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 tape to recover.

Claims

1. An elastomeric laminate tape consisting essentially of an elastomeric laminate comprised of at least one elastomeric layer and at least one outer skin layer wherein the at least one skin layer has a microtextured skin layer surface formed by inelastic deformation of the at least one skin layer in more than one direction and at least one substantially continuous pressure-sensitive adhesive layer in continuous contact with said at least one skin layer of said laminate.

2. The elastomeric laminate tape of claim 1 wherein the deformation of the at least one skin layer is created by sequential biaxial stretching.

3. The elastomeric laminate tape of claim 1 wherein the at least one skin layer having undergone inelastic deformation is an outer layer adjacent to said at least one adhesive layer.

4. The elastomeric laminate tape of claim 1 wherein said at least one adhesive layer has an undulating outer surface substantially corresponding to an adjacent underlying skin layer.

5. The elastomeric laminate tape of claim 4 wherein said at least one adhesive layer is less than 30 microns thick.

6. The elastomeric laminate tape of claim 1 comprising a removable label having a non-adhesive coated outer skin layer.

7. An elastomeric laminate tape comprising an elastomeric laminate comprised of at least one elastomeric core layer and at least one outer skin layer wherein the at least one skin layer has a microtextured skin layer surface formed by inelastic deformation of the at least one skin layer in at least one direction and at least one substantially continuous pressure-sensitive adhesive layer in continuous contact with at least the face of said laminate with the microtextured skin layer, wherein the adhesive thickness is such that its outer surface has an undulating texture corresponding to that of the underlying microtextured skin layer.

8. The elastomeric laminate tape of claim 7 wherein the surface area of the at least one microtextured skin layer is at least 50% greater than a corresponding untextured surface.

9. The elastomeric laminate tape of claim 8 comprising at least two skin layers each having microtextured surfaces said at least two skin layers comprising outer layers of said laminate.

10. The elastomeric laminate tape of claim 7 wherein the adhesive layer thickness is less than 30 microns.

11. The elastomeric laminate tape of claim 8 wherein said at least one core and said at least one skin layers are in continuous contact.

12. The elastomeric laminate tape of claim 8 wherein said at least one skin and adjacent at least one core layers are in intermittent contact.

13. An elastomeric laminate tape comprising an elastomeric laminate consisting essentially of at least one elastomeric layer and at least one outer skin layer wherein the at least one skin layer has a microtextured skin layer surface formed by inelastic deformation of the at least one skin layer in at least one direction and at least one substantially continuous pressure-sensitive adhesive layer over at least the entire face of said laminate with the microtextured skin layer, wherein the adhesive layer and the underlying skin layer are in substantially continuous contact providing improved anchorage of the adhesive layer to the laminate.

14. The elastomeric laminate tape of claim 13 wherein the deformation of the at least one skin layer is created by biaxial stretching.

15. The elastomeric laminate tape of claim 14 wherein the surface area of the at least one microtextured skin layer is at least 50% greater than a corresponding untextured surface.

16. The elastomeric laminate tape of claim 15 comprising at least two skin layers each having a microtextured skin layer surface said at least two skin layers comprising outer layers of said laminate.

17. The elastomeric laminate tape of claim 15 wherein said at least one adhesive layer on said at least one microstructured skin has a thickness such that the adhesive layer retains a substantially flat outer surface.

18. The elastomeric laminate tape of claim 17 wherein said at least one adhesive layer is greater than 30 microns thick.

19. The elastomeric laminate tape of claim 17 wherein said at least one core and said at least one skin layers are in continuous contact.

20. The elastomeric laminate tape of claim 17 wherein said at least one skin and adjacent at least one core layer are in intermittent contact.