Paper cook pot

• US 4,990,384 A
• Filed: 04/14/1989
• Issued: 02/05/1991
• Est. Priority Date: 04/14/1989
• Status: Expired due to Fees

• Current Assignee: Somar Pty Limited
• Original Assignee: Somar Pty Limited
• Inventors: Jinbo, Takeshi
• Primary Examiner(s): Robinson, Ellis P.
• Assistant Examiner(s): Turner, Archene A.
• Application Number:
  US07/338,207
• Time in Patent Office: 662 Days
• Field of Search: 428/35.7, 428/36.1, 428/36.4, 428/289, 428/290, 428/480, 428/481, 428/482, 428/483, 428/473.5, 428/474.4, 428/334, 428/336, 428/920, 428/921, 428/34.2 , 428/475.2, 426/113, 426/114, 220/458, 220/455, 220/459
• US Class Current: 428/36.1
• CPC Class Codes: A47J 36/022 Cooking- or baking-vessels or supports thereof for using only once eating- or serving-plates for using only once A47G19/02
• CPC Class Codes: B32B 1/00 Layered products having a non-planar shape
• CPC Class Codes: B32B 15/02 Layer formed of wires, e.g. mesh
• CPC Class Codes: B32B 15/12 of paper or cardboard
• CPC Class Codes: B32B 2250/40 Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
• CPC Class Codes: B32B 2307/3065 Flame resistant or retardant, fire resistant or retardant
• CPC Class Codes: B32B 2307/7265 Non-permeable
• CPC Class Codes: B32B 2439/02 Open containers
• CPC Class Codes: B32B 27/10 of paper or cardboard
• CPC Class Codes: B32B 27/281 comprising polyimides
• CPC Class Codes: B32B 27/34 comprising polyamides
• CPC Class Codes: Y10S 428/92 Fire or heat protection feature
• CPC Class Codes: Y10S 428/921 Fire or flameproofing
• CPC Class Codes: Y10T 428/1362 Textile, fabric, cloth, or pile containing [e.g., web, net, woven, knitted, mesh, nonwoven, matted, etc.]
• CPC Class Codes: Y10T 428/263 Coating layer not in excess of 5 mils thick or equivalent
• CPC Class Codes: Y10T 428/265 1 mil or less
• CPC Class Codes: Y10T 428/29 Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
• CPC Class Codes: Y10T 428/31721 Of polyimide
• CPC Class Codes: Y10T 428/31725 Of polyamide

Abstract

A cook pot formed from a sheet which includes a fibrous web formed of a flame retardative synthetic resin, and a water-impermeable layer integrally formed on at least one side of the web. The cook pot has a bottom wall and a side wall extending upwardly about the periphery of the bottom wall.

Claims

1. A cook pot formed from a sheet having a thickness of 20-250 μ

m and comprising a fibrous web formed of a flame retardative polyimide or aromatic polyamide and a continuous water-impermeable surface layer of said polyimide or polyamide having a thickness of at least 3 μ

m and integrally formed on at least the side of said web forming the interior surface of said cook pot, said continuous water-impermeable layer formed by calendering said web at a temperature and under a pressure sufficient to fuse said surface of said web, said cook pot having a bottom wall and a side wall extending upwardly about the periphery of said bottom wall.

2. A cook pot according to claim 1, further comprising a support member surrounding the outer surface of the side and/or bottom wall.

3. A cook pot according to claim 2, wherein said support member is a wire net basket.