Laminated articles and method of making same

• US 3,193,441 A
• Filed: 08/28/1961
• Issued: 07/06/1965
• Est. Priority Date: 08/28/1961
• Status: Expired due to Term

• Current Assignee: Kenneth A. Schafer
• Original Assignee: Kenneth A. Schafer
• Inventors: Schafer, Kenneth A.
• Application Number:
  US04/134,253
• Time in Patent Office: 1,408 Days
• US Class Current: 428/322.7
• CPC Class Codes: B32B 27/00 Layered products comprising a layer of synthetic resin fibrous or filamentary layer made of a synthetic resin B32B5/02; particulate layer made of a synthetic resin B32B5/16; foamed layer made of a synthetic resin B32B5/18
• CPC Class Codes: Y10T 428/249999 Differentially filled foam, filled plural layers, or filled layer with coat of filling material
• CPC Class Codes: Y10T 428/31511 Of epoxy ether

Claims

1. A SUBSTANTIALLY NON-POROUS LAMINATED ARTICLE COMPRISING A RESILIENT SHEET OF FLEXIBLE FOAMED POLYURETHANE HAVING OPEN, CONNECTED CELLS, SAID LAMINATED ARTICLE HAVING ITS OPEN CELLS, SUBSTANTIALLY ENTIRELY FILLED WITH A THERMOSETTING RESINOUS COMPOSITION IN A HARDENED, THERMOSET CONDITION, THE SAID THERMOSETTING RESINOUS COMPOSITION HAVING BEEN CURED WHILE THE SAID FOAMED POLYURETHANE WAS MAINTAINED UNDER COMPRESSION WHEREBY THE SAID SAID FOAMED POLYURETHANE IS SUBSTANTIALLY FLATTENED FROM ITS INITIAL UNCOMPRESSED THICKNESS AND IS SUBSTANTIALLY UNIFORMLY DISPOSED THROUGHOUT THE SAID ARTICLE.

5. THE LAMINATED ARTICLE OF CLAIM 1 WHEREIN A PLURALITY OF LAYERS OF FOAMED POLYURETHANE ARE UTILIZED IN A SANDWICH ASSEMBLY.