Self-extinguishing composite laminate

• US 3,900,625 A
• Filed: 03/26/1973
• Issued: 08/19/1975
• Est. Priority Date: 03/26/1973
• Status: Expired due to Term

• Current Assignee: Wei-Gwo Chen
• Original Assignee: Wei-Gwo Chen
• Inventors: Chen, Wei-Gwo
• Primary Examiner(s): Lesmes, George F.
• Assistant Examiner(s): Robinson, Ellis P.
• Application Number:
  US05/344,499
• Time in Patent Office: 876 Days
• Field of Search: 161/191,403,143,151,158,168,182,256,254,165,170,227,231 117/14A,137,136
• US Class Current: 428/110
• CPC Class Codes: B29C 70/08 comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
• CPC Class Codes: B32B 2262/0261 Polyamide fibres
• CPC Class Codes: B32B 2307/3065 Flame resistant or retardant, fire resistant or retardant
• CPC Class Codes: B32B 2307/514 Oriented
• CPC Class Codes: B32B 2323/046 LDPE, i.e. low density polyethylene
• CPC Class Codes: B32B 27/12 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 27/32 comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: E04D 5/10 by making use of compounded or laminated materials, e.g. metal foils or plastic films coated with bitumen
• CPC Class Codes: Y10S 428/921 Fire or flameproofing
• CPC Class Codes: Y10T 428/24099 On each side of strands or strand-portions
• CPC Class Codes: Y10T 428/269 including synthetic resin or polymer layer or component
• CPC Class Codes: Y10T 428/31645 Next to addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31757 Polymer of monoethylenically unsaturated hydrocarbon
• CPC Class Codes: Y10T 428/31765 Inorganic-containing or next to inorganic-containing
• CPC Class Codes: Y10T 428/31797 Next to addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31913 Monoolefin polymer

Abstract

This invention relates to a self extinguishing composite laminate which combines flexibility and light weight with high tensile-and tear strength and a high degree of flame resistance. This result has been attained by combination of previously known fire resistance agents so that the different components of the laminate each carries a set of flame resistance composition, designed not only to give the component in itself a high flame resistance, but also with regard to maximizing the synergistic effect with adjacent layers as well as between different chemical compounds. A range and system of composite design has been found, which in a surprising manner makes possible the construction of flexible foldable light weight laminates combining substantially retained strength properties, with a degree of flame resistance not previously attained particularly with olefinic materials without major sacrifice of structural properties.

Claims

1. AS AN ARTICLE OF MANUFACTURE, A FLEXIBLE FOLDABLE PLASTIC LAMINATE COMPRISING A GRID ON NON-WOVEN ORIENTED REINFORCING FIBERS SELECTED FROM THE GROUP CONSISTING OF POLYAMIDES, POLYESTERS, POLYOLEFINS, GLASS, POLYMERS FROM HALOGEN CONTAINING MONOMERS IN WHICH THE HALOGEN CONTENT IS AT LEAST 10%, POLYESTER FIBERS CONTAINING A FIRE RETARDANT HALOGEN CONTENT AND POLYIMIDAZOLES HAVING A MELTING POINT HIGHER THAN THE MELTING POINTS OF THE OUTER FILMS OF SAID LAMINATE, SAID FILMS CONSISTING OF POLYOLEFIN FILMS EACH LESS THAN 11 MIL THICK AND EACH HAVING INCORPORATED THEREIN AS A FIRE RETARDANT CHLORINATED PARAFFIN AND ANTIMONY OXIDE, THE SURFACES OF SAID FIBERS AND THE INNER SURFACES OF SAID FILMS BEING ESSENTIALLY COVERED, AND MUTUALLY UNITED, BY AN ORGANIC ADHESIVE HAVING INCORPORATED THEREIN AS

2. An article of claim 1 wherein said films each contain at least 4% of chlorinated paraffin and at least 2% of a substance selected from the group of substances comprising antimony trioxide and substances which on combustion form antimony trioxide.