PRINTABLE, HEAT-BONDABLE SHEET MATERIAL

• US 3,790,439 A
• Filed: 04/28/1971
• Issued: 02/05/1974
• Est. Priority Date: 04/28/1971
• Status: Expired due to Term

• Current Assignee: James D. La Perre, James F. Dyrud, Thomas W. Zosel
• Original Assignee: James D. La Perre, James F. Dyrud, Thomas W. Zosel
• Inventors: La Perre, James D., Dyrud, James F., Zosel, Thomas W.
• Primary Examiner(s): Lesmes, George F.
• Assistant Examiner(s): Wittenberg, M. B.
• Application Number:
  US05/138,216
• Time in Patent Office: 1,014 Days
• Field of Search: 283/64 281/1 11/10 161/150,167,252,229 117/122H,122PA,122P,11,15 260/897B,3.8R 264/45,49
• US Class Current: 428/41.3
• CPC Class Codes: C09J 7/22 Plastics; Metallised plastics
• CPC Class Codes: C09J 7/35 Heat-activated
• CPC Class Codes: Y10T 428/1452 Polymer derived only from ethylenically unsaturated monomer
• CPC Class Codes: Y10T 428/24843 with heat sealable or heat releasable adhesive layer
• CPC Class Codes: Y10T 428/24967 Absolute thicknesses specified
• CPC Class Codes: Y10T 428/2813 Heat or solvent activated or sealable
• CPC Class Codes: Y10T 428/3158 Halide monomer type [polyvinyl chloride, etc.]
• CPC Class Codes: Y10T 428/31583 Nitrile monomer type [polyacrylonitrile, etc.]
• CPC Class Codes: Y10T 428/31587 Hydrocarbon polymer [polyethylene, polybutadiene, etc.]

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.

Claims

2. The sheet material of claim 1 wherein the adhesive layer is mildly tacky and protectively covered by a removable liner.

3. The sheet material of claim 1 wherein the ink-receptive layer is formed of fibrous spun bonded high density polyethylene.

4. The sheet material of claim 3 wherein the spun bonded polyethylene is saturated with a poly(vinyl alkyl ether).

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.

6. A book having a heat-bonded to its cover a label formed from the sheet material of claim 1.