Elastic closure tape tab for disposable absorbent articles such as diapers

• US 6,719,744 B2
• Filed: 08/22/2002
• Issued: 04/13/2004
• Est. Priority Date: 03/15/2000
• Status: Expired due to Term

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Eynon, Stuart L., Kinnear, Christopher M.
• Primary Examiner(s): Lo, Weilun
• Assistant Examiner(s): Stephens, Jacqueline F
• Application Number:
  US10/204,755
• Publication Number:
  US 20030032359A1
• Time in Patent Office: 600 Days
• Field of Search: 604/389, 604/390, 604/391, 604/386, 604/387
• US Class Current: 604/389
• CPC Class Codes: A61F 13/581 Tab fastener elements combining adhesive and mechanical fastening fabric strip fastener elements A61F13/62
• CPC Class Codes: Y10T 442/60 Nonwoven fabric [i.e., nonwoven strand or fiber material]
• CPC Class Codes: Y10T 442/601 Nonwoven fabric has an elastic quality
• CPC Class Codes: Y10T 442/602 Nonwoven fabric comprises an elastic strand or fiber material
• CPC Class Codes: Y10T 442/674 Nonwoven fabric with a preformed polymeric film or sheet

Abstract

The present invention provides an adhesive closure tape tab (10,50) form of an elastic laminate (15) of an elastic film (16) having on at least a first major side an expandable fibrous layer (17) of non-woven thermoplastic polymer fibers. On the second major side of the plastic film are attached, a first (30) and a second (20) non-elastic adhesive tape. Each adhesive tape is formed of a fibrous layer (21) of non-woven thermoplastic polymer fibers having on one major surface an adhesive layer (22). The first (30) and second (20) non-elastic adhesive tape are attached opposite to each other to the second major side of the elastic laminate (15) by an adhesive layer (22) and extending beyond the elastic laminate (15).

Claims

1. An adhesive closure tape tab (10,50) comprising an elastic laminate (15) comprising an elastic film (16) having on at least a first major side an expandable fibrous layer (17) of non-woven thermoplastic polymer fibers and on a second major side, a first (30) and a second (20) non-elastic adhesive tape, each adhesive tape comprising a fibrous layer (21) of non-woven thermoplastic polymer fibers having on one major surface an adhesive layer (22), said first (30) and second (20) non-elastic adhesive tapes being attached opposite to each other and said second major side of said elastic laminate (15) by said adhesive layer (22) and said first (30) and second (20) non-elastic adhesive tape extending beyond said elastic laminate (15).

2. An adhesive closure tape tab according to claim 1 wherein said first non-elastic adhesive tape comprises a mechanical fastener (32) adhered to said adhesive layer (22).

3. An adhesive closure tape tab according to claim 1 further comprising a release tape (70) having a backing (73) having an adhesive layer (71) on one side and a release surface (72) on the side opposite thereto, said release tape being bonded to said second non-elastic adhesive tape (70) adjacent said elastic laminate and being folded such that said release surface overlays the expandable fibrous layer (17) of said elastic laminate (15).

4. An adhesive closure tape tab according to claim 1 wherein said first and second non elastic adhesive tape (20,30) each comprise a covering layer (37a, 37b) covering the adhesive layer of the non elastic adhesive tape adjacent the edge overlaying the elastic laminate (15) and wherein said first and second non-elastic adhesive tape (20,30) are bonded to said elastic laminate (15) in such a way that in the non-expanded state of said adhesive closure tape tab, the first and second non-elastic adhesive tape (20,30) are in contact with each other.

5. An adhesive closure tape tab according to claim 1 wherein said second major side of said elastic laminate (15) also includes an expandable fibrous layer (17) of non-woven thermoplastic polymer fibers attached thereto and wherein said second major side of said elastic laminate is adapted at opposite ends (40,41) to improve the bonding of said first and second non-elastic adhesive tape thereto.

7. An absorbent article (1) having an adhesive closure tape tab (10,50) according to claim 1 attached to one edge.

6. A prelaminated composite tape laminate in stable roll (44) from which an adhesive closure tape tab can be cut the laminate comprising an elastic laminate (15) comprising an elastic film (16) having on at least a first major side an expandable fibrous layer (17) of non-woven thermoplastic polymer fibers and on the second major side, a first (30) and a second (20) non-elastic adhesive tape, each adhesive tape comprising a fibrous layer (21) of non-woven thermoplastic polymer fibers having on one major surface an adhesive layer (22), said first (30) and second (20) non-elastic adhesive tape being attached opposite to each other on said second major side of said elastic laminate (15) by said adhesive layer (22) and said first (30) and second (20) non-elastic adhesive tape extending beyond said elastic laminate (15) and in which said first and second non-elastic adhesive tape and said elastic film extend axially.