Self-rolled foam tape without release layer and method of making same
AssigneeKeene Corporation
InventorsMark A. DeRusha, Thomas E. Schultz, Stephen W. Luchio
Life of this patent
Estimating the term…
Abstract
A pressure-sensitive tape having a closed-cell polymer foam backing strip and a pressure-sensitive adhesive is disclosed. The tape is formed into a roll so that the adhesive of one layer is in direct physical contact with the foam of the next layer, without the use of release paper or release coatings. The tape may be unwound without significantly disrupting either the adhesive layer or the foam layer. The foam is preferably a closed-cell cross-linked polyethylene copolymer and the adhesive is preferably a hypoallergenic acrylic-based adhesive.
Claims18
A pressure-sensitive adhesive tape, comprising:
- a web of closed-cell polymer foam material having a front side and a back side;
- said web being wound into a multi-layered roll so that said front side is adjacent to said back side in successive windings;
- a layer of pressure-sensitive adhesive disposed between and in direct contact with said adjacent front and back sides of said foam;
- said adhesive being releasably attached to said back side and permanently attached to said front side.
An article of manufacture, comprising
- a web of closed-cell polyethylene foam material having a front side and a back side;
- a layer of pressure-sensitive adhesive permanently affixed to said front side;
- said adhesive layer being releasably attachable to said back side of said foam to permit the front side of one part of said web to be adhesively attached to the back side of another part of said web and then separated without substantially disrupting said back side.
A process for making a self-rolled pressure-sensitive adhesive foam tape, comprising the steps of:
- subjecting a closed-cell polymer foam web to corona discharge;
- applying a layer of pressure-sensitive adhesive to a release paper;
- mating the foam web to the adhesive;
- forming the foam web, the adhesive, and the release paper into a multi-layered roll;
- unrolling the web, the adhesive, and the release paper;
- removing the release paper, leaving a pressure-sensitive adhesive tape having a foam backing side and an adhesive side;
- and
- self-rolling the pressure-sensitive adhesive tape into a multi-layered roll so that the adhesive side of one layer is in direct physical contact with the foam side of an adjoining layer.
Dependencies are inferred from the claim text.