STRUCTURAL PANEL HAVING FOAM PLASTIC CORE

• US 3,637,459 A
• Filed: 03/17/1970
• Issued: 01/25/1972
• Est. Priority Date: 03/17/1970
• Status: Expired due to Term

• Current Assignee: Albert J. Palfrey, Eugene R. Moore, Hal G. Parish
• Original Assignee: Albert J. Palfrey, Eugene R. Moore, Hal G. Parish
• Inventors: Parish, Hal G., Palfrey, Albert J., Moore, Eugene R.
• Primary Examiner(s): Van Balen, William J.
• Application Number:
  US05/020,316
• Time in Patent Office: 679 Days
• Field of Search: 161/160,161,165,186,227,253,254,252
• US Class Current: 428/317.1
• CPC Class Codes: C08J 9/14 organic
• CPC Class Codes: E04C 2/243 one at least of the material being insulating
• CPC Class Codes: E04D 13/16 Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
• CPC Class Codes: E04D 3/352 at least one insulating layer being located between non-insulating layers, e.g. double skin slabs or sheets
• CPC Class Codes: F16L 59/00 Thermal insulation in general
• CPC Class Codes: F16L 59/14 Arrangements for the insulation of pipes or pipe systems F16L59/02 - F16L59/12 take precedence
• CPC Class Codes: Y10T 428/24149 Honeycomb-like
• CPC Class Codes: Y10T 428/24331 including nonapertured component
• CPC Class Codes: Y10T 428/249982 With component specified as adhesive or bonding agent
• CPC Class Codes: Y10T 428/249985 Composition of adhesive or bonding component specified
• CPC Class Codes: Y10T 428/24999 Inorganic
• CPC Class Codes: Y10T 428/249992 Linear or thermoplastic
• CPC Class Codes: Y10T 428/26 Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
• CPC Class Codes: Y10T 428/31515 As intermediate layer

Abstract

Laminated panels of improved stability and wide utility are obtained by employing a styrene-maleic anhydride copolymer as a foamed core of the panel. The copolymer is a uniform copolymer of from 85 to 65 weight percent styrene and 15 to 35 weight percent maleic anhydride.

Claims

2. The panel of claim 1 wherein the second face of the core has a second skin member rigidly affixed thereto.

3. The panel of claim 1 wherein the skin member is a metal sheet.

4. The panel of claim 1 wherein the solution viscosity of the polymer is from 3 to 9 centipoise.

5. The panel of claim 1 wherein the panel is adhesively bonded to the core.