Production of multiple-layer sheets, panels, shaped articles

• US 3,954,537 A
• Filed: 12/31/1974
• Issued: 05/04/1976
• Est. Priority Date: 12/31/1973
• Status: Expired due to Term

• Current Assignee: Dynamit Nobel AG
• Original Assignee: Dynamit Nobel AG
• Inventors: Breitscheidel, Hans-Ulrich, Alfter, Franz-Werner, Reinkemeyer, Heinz-Gerd, Simm, Manfred
• Primary Examiner(s): Powell, William A.
• Assistant Examiner(s): Leitten, Brian J.
• Application Number:
  US05/537,762
• Time in Patent Office: 490 Days
• Field of Search: 428/304, 428/305, 428/310, 428/311, 428/315, 428/482, 156/77, 156/78, 156/79, 156/82, 156/497, 156/272, 156/306, 156/380
• US Class Current: 156/82
• CPC Class Codes: B29C 44/04 consisting of at least two parts of chemically or physically different materials, e.g. having different densities
• CPC Class Codes: B29C 51/082 by shaping between complementary mould parts
• CPC Class Codes: B29C 51/14 using multilayered preforms or sheets
• CPC Class Codes: B29C 51/145 having at least one layer of textile or fibrous material combined with at least one plastics layer
• CPC Class Codes: B29K 2313/00 Use of textile products or fabrics as reinforcement B29K2105/06 takes precedence
• CPC Class Codes: B32B 2038/0076 Curing, vulcanising, cross-linking
• CPC Class Codes: B32B 2266/025 Polyolefin vinyl or acrylic copolymers B32B2266/0221, B32B2266/0242
• CPC Class Codes: B32B 2266/0278 Polyurethane
• CPC Class Codes: B32B 2266/08 Closed cell foam
• CPC Class Codes: B32B 2305/022 Foam
• CPC Class Codes: B32B 2305/72 Cured, e.g. vulcanised, cross-linked
• CPC Class Codes: B32B 2601/00 Upholstery
• CPC Class Codes: B32B 2605/003 Interior finishings
• 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: B32B 5/18 characterised by features of a layer of foamed material
• CPC Class Codes: B32B 5/32 at least two layers being foamed and next to each other
• CPC Class Codes: Y10S 264/83 Injection molding of polyolefin-type foam
• CPC Class Codes: Y10T 428/249977 Specified thickness of void-containing component [absolute or relative], numerical cell dimension or density
• CPC Class Codes: Y10T 428/249981 Plural void-containing components
• CPC Class Codes: Y10T 428/31794 Of cross-linked polyester

Abstract

A process for the production of multiple-layer sheets, panels, shaped articles, or the like laminates having at least one layer of polyurethane foam material wherein at least one side of the polyurethane foam layer is bonded under the action of heat to a layer of cross-linked polyethylene foam material.

Claims

1. A process for the production of multiple-layer sheets, panels, shaped articles, or the like laminate having at least one layer of polyurethane foam material, which comprises bonding at least one side of the polyurethane foam layer under the action of heat to a layer of crosslinked polyethylene foam material.

2. The process according to claim 1, wherein said polyethylene foam material is a closed-pore ethylene foam that has been crosslinked chemically or by means of irradiation.

3. The process according to claim 1, wherein a layer of the crosslinked polyethylene foam material is laminated on one side with an elastic, strechable film, fabric, knit, or the like and is then bonded on the other side to a layer of the polyurethane foam material.

4. The process according to claim 1, wherein the cross-linked polyethylene foam layer is preformed.

5. The process according to claim 1, wherein the heat for bonding the crosslinked polyethylene foam material to the polyurethane foam material is provided by flame-laminating, hot-air laminating, hot-wire welding, V-blade heat welding, or an irradiated field.

6. The process according to claim 1, wherein the bonding of the crosslinked polyethylene foam layer to the polyurethane foam layer is conducted with simultaneous shaping of the materials.

7. The process according to claim 1, wherein a cross-linked polyethylene foam layer is initially molded into a desired shape by vacuum forming and is then directly thereafter filled with and bonded to the polyurethane foam material.