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US 12,570,877 B2Granted
Film including hybrid solvent barrier and primer layer
Assignee3M Innovative Properties Company
InventorDavid B. Bilbrey
Life of this patent
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Abstract
Conformable, stretchable, printable films are described. In particular, films that include a film substrate, a pressure sensitive adhesive, and a hybrid solvent barrier/primer layer including a blend of two copolyamides that are not miscible are described. Such hybrid solvent barrier and primer layers may be effective as both a solvent barrier and a primer layer.
Claims17
A conformable, stretchable printable film consisting of:
- a film substrate having a first major surface for receiving ink;
- a pressure sensitive adhesive;
- and
- a hybrid solvent barrier/primer layer or stack, wherein the hybrid solvent barrier/primer layer or stack is disposed between the film substrate and the pressure sensitive adhesive,
- and is disposed on the opposite side of the film substrate from the first major surface;
- wherein the hybrid solvent barrier/primer layer or stack is a single layer or a layer stack, and wherein the hybrid solvent barrier/primer layer or stack is a resin blend comprising two copolyamides that are not miscible;
- and
- wherein the hybrid solvent barrier/primer layer or stack includes one copolyamide in a continuous and one copolyamide in a discontinuous phase, wherein the hybrid solvent barrier/primer layer or stack bonds to both the film substrate and the pressure sensitive adhesive layer.
5 more elements
A conformable, stretchable, printable film consisting of:
- a film substrate having a first major surface for receiving ink;
- a pressure sensitive adhesive;
- and
- a hybrid solvent barrier/primer stack, wherein the hybrid solvent barrier/primer stack is disposed between and bonds to both the film substrate and the pressure sensitive adhesive, and is disposed on the opposite side of the film substrate from the first major surface;
- wherein the hybrid solvent barrier/primer stack includes two layers;
- wherein each of the layers in the hybrid solvent barrier/primer stack is a resin blend comprising two copolyamides that are not miscible;
- and
- wherein each of the layers in the hybrid solvent barrier/primer stack includes a different blend of the two same copolyamides.
5 more elements
Dependencies are inferred from the claim text.