Peelable breakaway multi-layered structures and methods and compositions for making such structures
OwnerDennis Carespodi, Charles Ashcraftinventors
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Abstract
Disclosed are peelable multi-layered structures and methods and compositions for making such structures. In one example embodiment, the structure may include a structural layer and a peelable breakaway layer that functions by cohesive failure. The composition used for the breakaway layer may be made of a first matrix into which is blended a second composition that is dispersed the matrix. For example, a matrix of a first polymer may be blended with a second polymer that is at least partly incompatible with the first polymer, and at least 10% of an inert filler.
Claims67
A composition for use as a peelable breakaway layer in a multi-layer structure comprising a first matrix into which is blended a second composition that is at least partly incompatible with the matrix.
A composition for use as a breakaway layer in a multi-layer structure comprising a polymer blend comprising an inert filler, wherein the filler is dispersed in the polymer blend, and wherein the breakaway layer functions by cohesive failure of the layer.
A multi-layered structure comprising a composition for use as a breakaway layer, wherein the breakaway layer comprises a polymer blend comprising an inert filler, wherein the filler is dispersed in the polymer blend, and wherein the breakaway layer functions by cohesive failure of the layer.
A multi-layered structure comprising:
- (a) a structural layer;
- and
- (b) a peelable breakaway layer comprising a polymer blend comprising an inert filler, wherein the filler is dispersed in the polymer blend.
A multi-layered structure comprising:
- (a) a structural layer;
- and
- (b) a peelable breakaway layer that functions by cohesive failure comprising a first matrix into which is blended a second composition that is at least partly incompatible with the matrix.
An article of manufacture comprising a composition for use a peelable breakaway layer that functions by cohesive failure, wherein the composition comprises a polymer blend having a first polymer, and a second polymer, such that the second polymer comprises discrete islands in the first polymer, and an inert filler, wherein the filler is dispersed in the blend.
An article of manufacture comprising a composition for use a peelable breakaway layer that functions by cohesive failure, wherein the composition comprises a first matrix into which is blended a second composition that is at least partly incompatible with the matrix.
An article of manufacture comprising a multi-layered structure, wherein the multi-layered structure comprises:
- (a) a structural layer;
- and
- (b) a peelable breakaway layer that functions by cohesive failure comprising a blend having a first polymer, and a second polymer, such that the second polymer comprises discrete islands in the first polymer, and an inert filler, wherein the filler is dispersed in the blend.
An article of manufacture comprising a multi-layered structure, wherein the multi-layered structure comprises:
- (a) a structural layer;
- and
- (b) a peelable breakaway layer that functions by cohesive failure, wherein the composition comprises a first matrix into which is blended a second composition that is at least partly incompatible with the matrix.
A method of making a composition for use as a peelable breakaway layer in a multi-layer structure comprising the steps of:
- (a) blending a first polymer and a second polymer, such that the second polymer comprises discrete islands in the first polymer;
- and
- (b) dispersing an inert filler in the blend the filler, such that the filler is dispersed in the polymer blend.
Dependencies are inferred from the claim text.