Adhesive articles permitting damage free removal
Assignee3M Innovative Properties Company
InventorsBrett P. Krull, Dawud H. Tan, Saurabh Batra, Bryan L. Gerhardt, Stephen M. Sanocki
Life of this patent
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Abstract
The present disclosure provides adhesive articles that can be removed from surfaces without damage by having reduced or eliminated contribution of a core backing to peel force generated by the adhesive during removal. In some instances, this can be accomplished by a core that loses structural integrity in a direction normal to a plane defined by a major surface. In other instances, the contribution is reduced by compromising the interface between the core and a peelable adhesive layer.
Claims14
An adhesive article for mounting an object to a surface, the article comprising:
- a first adhesive layer;
- a core adjacent the first adhesive layer and defining a perimeter, the core comprising core material and including first and second major surfaces;
- and
- a first arranged pattern of recesses on at least the first major surface of the core, each recess terminating in a membrane, wherein the membrane defines the bottom surface of the recess and comprises core material;
- and
- an adhesive interface within the membrane, wherein the adhesive interface comprises contact between the first adhesive layer and the membrane,
- wherein the article is configured such that removal of the article from an adherend at a peel angle exceeding 35 degrees results in at least one of delamination of the first adhesive layer from the first major surface of the core or degradation of the core.
An adhesive article for mounting an object to a surface, the article comprising:
- a first adhesive layer comprising a first peelable adhesive composition:
- a core adjacent the first adhesive layer and defining a perimeter, the core comprising porous core material having a first void volume and including first and second major surfaces;
- and
- a first arranged pattern of recesses on at least the first major surface of the core, each recess terminating in a membrane comprising core material and having a second void volume less than the first void volume, the membrane defining a bottom surface of the recess,
- wherein the first peelable adhesive composition is at least partially within the pores of each membrane, and
- wherein the article is configured such that removal of the article from an adherend at a peel angle exceeding 35 degrees results in at least one of delamination of the first adhesive layer from the first major surface of the core or degradation of the core.
Dependencies are inferred from the claim text.