PRINTABLE, HEAT-BONDABLE SHEET MATERIAL
First Claim
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2. The sheet material of claim 1 wherein the adhesive layer is mildly tacky and protectively covered by a removable liner.
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Abstract
A laminated sheet material comprising (1) a porous, printable thermoplastic polymeric layer and (2) a heatactivated adhesive layer has particular utility in preparing call number labels for attachment to the spines of books. The physical properties of the two layers are interrelated, and the heat which activates the adhesive during application of the label also indelibly seals the indicia in the printable layer.
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Citations
6 Claims
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2. The sheet material of claim 1 wherein the adhesive layer is mildly tacky and protectively covered by a removable liner.
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3. The sheet material of claim 1 wherein the ink-receptive layer is formed of fibrous spun bonded high density polyethylene.
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4. The sheet material of claim 3 wherein the spun bonded polyethylene is saturated with a poly(vinyl alkyl ether).
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5. The sheet material of claim 4 wherein the adhesive is a blend of a rubbery acrylonitrile:
- butadiene polymer containing 25-45 mol percent acrylonitrile, sulfonamide resin plasticizer, and tac ifier.
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6. A book having a heat-bonded to its cover a label formed from the sheet material of claim 1.
Specification