A FILM BACKING FOR RELEASABLE SECUREMENT
The disclosed film backing has a multilayer extensible substrate with a securing adhesive that can secure to a surface and a tab to stretch the extensible substrate to remove the securing adhesive from the underlying surface. Stretching the extensible substrate will easily release the adhesive from the underlying surface. Therefore, a strong adhesive can be used. The multilayer extensible substrate includes an elastic layer forming the core adjacent to a plastically-deforming layers forming the skin to minimize the elasticity of the overall construction.
1 . A film backing having a first major surface and a second major surface, opposite the first major surface, the film backing comprising
extensible substrate comprising:
a core layer comprising an elastomeric material;
a first skin layer adjacent to the core layer comprising a plastically deforming material;
a securing adhesive adjacent to the first major surface;
wherein the extensible substrate has a core thickness to first skin thickness ratio of less than 10 to 1;
wherein the extensible substrate has a plastic deformation of at least 50%;
wherein the extensible substrate has an elongation of less than 600%;
wherein the extensible substrate has a Fn Modulus of less than 20 N per inch width at 50% elongation.
2 . The film backing of claim 1 , wherein the core comprises at least one of an elastomeric polymer, SEBS, SEPS, SIS, SBS, polyurethane, ethyl vinylacetate (EVA), ethyl methyl acrylate (EMA) ultra low linear density polyethylene (ULLDPE), hydrogenated polypropylene, and combinations or blends thereof.
3 . The film backing of claim 1 , further comprising a second skin layer, adjacent to the core layer and opposite from the first skin layer, comprising a plastically deforming material.
4 . The film backing of claim 1 , wherein the first or second skin layer comprises polypropylene, polyethylene, high density polyethylene (HDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), a polyurethane, EVA, EMA, an adhesive, and combinations or blends thereof.
5 . The film backing of claim 1 , wherein the extensible substrate has a core thickness to first skin thickness ratio of less than 2 to 1.
6 . The film backing of claim 1 , further comprising a second adhesive adjacent to the second major surface.
7 . The film backing of claim 1 , wherein the extensible substrate has an elongation to break of at least 100% and less than 500%.
8 . The film backing of claim 1 , wherein the extensible substrate has a Fn Modulus of less than 5 N per inch width at 50% elongation.
9 . The film backing of claim 1 , further comprising a tab at a perimeter portion of the extensible substrate.
10 . The film backing of claim 1 , further comprising a second tab.
11 . The film backing claim 1 , wherein at least one of the first major surface or second major surface of the extensible substrate at the tab is free of tacky adhesive.
12 . The film backing of claim 1 , wherein at the first major surface of the extensible substrate at the tab is a tab adhesive, different from the securing adhesive.
13 . The film backing claim 1 , wherein at the second major surface of the extensible substrate at the tab is a tab adhesive, different from the securing adhesive.
14 . The film backing of claim 1 , wherein the securing adhesive and second adhesive are arranged in at least partially vertical overlapping relationship to one another.
15 . The film backing of claim 1 , further comprising a device secured to the second adhesive.
16 . The film backing of claim 1 , wherein the extensible substrate extends beyond a perimeter of the device.
17 . The film backing of claim 1 , wherein the securing adhesive on the first major surface is arranged as underlying the device.
18 . The film backing claim 1 , wherein the securing adhesive is on the entire first major surface except at the tab.
19 . The film backing of claim 1 , in an elongated strip formed into a roll.