Laminated soft polyolefin resin layer to urethane foam using an adhesive

• US 5,219,649 A
• Filed: 12/19/1990
• Issued: 06/15/1993
• Est. Priority Date: 12/20/1989
• Status: Expired due to Fees

• Current Assignee: Sumitomo Chemical Company Limited
• Original Assignee: Sumitomo Chemical Company Limited
• Inventors: Nagai, Satoshi, Yamaguchi, Noboru, Nishino, Minoru, Hatou, Yuji
• Primary Examiner(s): Sluby, P. C.
• Application Number:
  US07/629,881
• Time in Patent Office: 909 Days
• Field of Search: 428/314.4, 428/304.4, 428/317.4, 428/520, 428/317.7, 428/319.9, 428/516
• US Class Current: 428/317.7
• CPC Class Codes: B32B 2266/0278 Polyurethane
• CPC Class Codes: B32B 27/065 of foam
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/32 comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 37/153 at least one layer is extruded and immediately laminated while in semi-molten state
• CPC Class Codes: B32B 5/18 characterised by features of a layer of foamed material
• CPC Class Codes: Y10T 428/249976 Voids specified as closed
• CPC Class Codes: Y10T 428/249985 Composition of adhesive or bonding component specified
• CPC Class Codes: Y10T 428/249993 Hydrocarbon polymer
• CPC Class Codes: Y10T 428/31913 Monoolefin polymer
• CPC Class Codes: Y10T 428/31928 Ester, halide or nitrile of addition polymer

Abstract

A laminate comprising a soft polyolefin resin layer, an ethylene-unsaturated carboxylic acid ester-maleic anhydride terpolymer resin layer, and a soft urethane foam resin layer is disclosed. The laminate is produced by a process comprising co-extruding a soft polyolefin resin and an ethylene-unsaturated carboxylic acid ester-maleic anhydride terpolymer resin to prepare a two-layer sheet and continuously laminating a soft urethane foam fabricated in a stratiform state on the ethylene-unsaturated carboxylic acid ester-maleic anhydride terpolymer resin layer by hot pressing. The laminate has a satisfactory appearance, toughness, a soft touch, and a cushioning effect.

Claims

1. A laminate comprising a soft polyolefin resin layer, an ethylene-unsaturated carboxylic acid ester-maleic anhydride terpolymer resin layer, and a soft urethane foam resin layer.

2. A laminate as claimed in claim 1, wherein said ethylene-unsaturated carboxylic acid ester-maleic anhydride terpolymer is a copolymer comprising from 65 to 95% by weight of an ethylene unit, from 5 to 30% by weight of an unsaturated carboxylic acid ester unit, and from 1 to 5% by weight of a maleic anhydride unit and having a melt flow rate ranging from 0.1 to 100 g/10 min.