Adhesive articles permitting damage free removal
Assignee3M Innovative Properties Company
InventorsBrett P. Krull, Dawud H. Tan, Bradley W. Eaton
Life of this patent
Estimating the term…
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.
Claims19
An adhesive article for mounting objects, the article comprising:
- a first peel release adhesive layer;
- a second peel release adhesive layer;
- a core defining a perimeter boundary disposed between the first and second adhesive layers;
- and
- a plurality of seams defining an interface between the first and second adhesive layers, wherein the seams extend along at least a portion of the perimeter boundary, 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 peelable adhesive layer from the core or degradation of the core.
An adhesive article comprising:
- a first peelable adhesive layer;
- a second peelable adhesive layer;
- a discrete core disposed between the first and second peelable adhesives, and having first and second major surfaces, wherein the core defines a core plane coincident with the first major surface;
- and
- a plurality of adhesive contact areas each comprising an interface between the first and second adhesive layers, wherein each interface exists out of the core plane, 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 peelable adhesive layer from the core or degradation of the core.
An adhesive article for mounting an object to a surface, the article comprising:
- A first adhesive layer;
- A second adhesive layer;
- A core defining a perimeter, the core disposed between the first adhesive layer and the second adhesive layer;
- and
- A plurality of adhesive contact areas, wherein the adhesive contact areas comprise an interface between the first and second adhesive layers, and wherein the adhesive contact areas are located within the perimeter of the core,
- wherein at least the first adhesive layer debonds from the core when the adhesive article is removed at an angle of greater than 35 degrees, and
- wherein the first adhesive layer does not debond from the second adhesive layer at each of the interfaces when the adhesive article is removed at an angle of greater than 35 degrees.
Dependencies are inferred from the claim text.