Adhesive articles permitting damage free removal

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.

We claim: 
     
         1 . 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 a first major surface, a second major surface, and a thickness, 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 the core defines an arranged pattern of apertures, and wherein each interface is located within an aperture.   
     
     
         2 . The adhesive article of  claim 1 , wherein each interface exists out of the core plane. 
     
     
         3 . The adhesive article of  claim 1 , wherein the first peelable adhesive layer is adhesively bonded to the core. 
     
     
         4 . The adhesive article of  claim 1 , wherein the core includes a nonwoven material. 
     
     
         5 . The adhesive article of  claim 1 , 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. 
     
     
         6 . The adhesive article of  claim 1 , where in the apertures extend through the thickness of the core material. 
     
     
         7 . The adhesive article of  claim 1 , wherein the apertures comprise a series of channels. 
     
     
         8 . The adhesive article of  claim 1 , wherein each aperture includes a largest cross-sectional dimension at an opening of the aperture, and wherein the largest cross-sectional dimension is at least 0.5 millimeters and no greater than 80 millimeters. 
     
     
         9 . The adhesive article of  claim 1 , wherein at least one of the first and second peelable adhesive layers is coupled to the core after apertures have been created in a core material. 
     
     
         10 . The adhesive article of  claim 1 , wherein the first and second adhesive layers do not occupy all available volume within a given aperture. 
     
     
         11 . The adhesive article of  claim 1 , wherein at least one aperture of the arranged pattern of apertures does not include an adhesive interface. 
     
     
         12 . The adhesive article of  claim 1 , wherein the pitch between adjacent apertures is at least 0.5 millimeters and no greater than 70 millimeters. 
     
     
         13 . The adhesive article of  claim 1 , wherein article includes a core interface between the first adhesive layer and the core in interstitial spaces between apertures, and wherein the adhesive bond strength at the adhesive interfaces is greater than the adhesive bond strength at the core interface. 
     
     
         14 . The adhesive article of  claim 1 , wherein the application of force in a direction normal to the core plane results in a loss of structural integrity within the core. 
     
     
         15 . An object for mounting to a surface, the object comprising: a hardgood having a first major surface; a discrete core defining a first surface in contact with the hardgood and a second surface opposing the first surface; an adhesive layer bonded to both the first major surface of the hardgood and the second surface of the core, wherein the peel release force necessary to remove the adhesive from the hardgood is greater than peel release force necessary to at least one of debond the adhesive from the core or cause delamination of the core. 
     
     
         16 . The mounting object of  claim 15 , wherein the hardgood includes at least one of a hook, a knob, a clip, a caddy, a box, and/or a loop. 
     
     
         17 . The mounting object of  claim 15 , wherein the core includes a thickness and defines a core plane coincident with the first major surface; and wherein the core defines an arranged pattern of apertures. 
     
     
         18 . The mounting object of  claim 17  and further comprising a second adhesive layer bonded to at least a portion of the second surface of the core. 
     
     
         19 . The mounting object of  claim 18 , wherein the second adhesive layer contacts the first adhesive layer to form an adhesive interface in at least one of the apertures. 
     
     
         20 . A method of using an adhesive article, comprising:
 contacting the adhesive article of  claim 1  with an adherend surface; and   peeling the adhesive article from the adherend surface to remove at least a portion of the adhesive article from the adherend surface, where the adhesive article is peeled at an angle of 35° or greater, wherein the structural integrity of the core is compromised during the step of peeling the adhesive article from the adhered surface.