Methods for preparing modified release liners and modified adhesive articles
Assignee3M Innovative Properties Company
InventorsFrank T. Sher, David J. Yarssoo
Life of this patent
Estimating the term…
Abstract
Adhesive articles are prepared through the use of modified release liners. The modified release liners include a fracturable layer and a release surface partially covering the fracturable layer. The modified release liners may be prepared by selective coating of a release material onto the fracturable layer or by selective treatment of a release surface to expose portions of the fracturable layer. Upon removal of an adhesive layer adhered to the modified release liner, portions of the fracturable layer of the release liner adhere to the adhesive layer to form a modified adhesive layer.
Claims21
-28. (canceled)
An adhesive article comprising:
- a release construction comprising:
- a fracturable layer;
- and
- a release surface partially covering the fracturable layer leaving regions of fracturable layer uncovered by the release surface;
- and
- an adhesive layer comprising a first surface and a second surface wherein the first surface is in contact with the release construction, and wherein the adhesive strength of the interface between the adhesive layer and the fracturable layer is greater than the fracture strength of the fracturable layer, while the adhesive strength of the interface between the adhesive layer and the release surface is less than the fracture strength of the fracturable layer.
The adhesive article of claim 1 further comprising a backing in contact with the second surface of the adhesive layer.
A method of making an adhesive article comprising:
- providing a release liner, the release liner comprising:
- a fracturable layer;
- and
- a release surface partially covering the fracturable layer;
- contacting an adhesive layer onto the release liner such that the adhesive layer contacts the release surface and the fracturable layer in the regions not covered by the release surface;
- and
- removing the adhesive layer from the release liner, wherein portions of the fracturable layer remain adhered to the adhesive layer.
A method of preparing a release liner comprising:
- providing a base layer wherein the base layer comprises a fracturable layer;
- and
- selectively coating a release coating onto the fracturable layer leaving regions of fracturable layer uncovered by the release surface.
A method of preparing a modified release liner comprising:
- providing a release liner, wherein the release liner comprises a base layer that comprises a fracturable layer and a release coating on the fracturable layer;
- and
- selectively treating regions of the release coating, wherein the treatment selectively exposes the fracturable layer at the treatment sites or changes the surface energy of the release coating in the selected regions.
Dependencies are inferred from the claim text.