Corrosion-resistant door and its method of manufacture

Details Corrosion-resistant door and its method of manufacture Corrosion-resistant door and its method of manufacture

1985-11-19

1987-06-30

Anderson, Philip

Static structures (e.g., buildings)

With synthetic resinous component

Foam

264257, 264273, 2642791, 4283177, B32B 516, B29C 1708

Patent

active

046760415

ABSTRACT:
A corrosion-resistant door constituted by a one-piece integrated structure of high strength, free of assembly joints and seams. The door includes a rectangular core formed by a slab of rigid closed-cell foam plastic or other material having an array of holes therein extending between the opposing faces of the slab. The core is encapsulated within a rigid plastic shell formed by resin-impregnated fiberglass having a smooth, non-porous resin outer skin. The structure is reinforced by resin dowels which extend through the holes in the core to bridge the opposing faces of the shell. The door is fabricated by a resin transfer molding technique in which a core wrapped in dry fiberglass or other reinforcing material is placed in the mold and a liquid catalyzed resin is injected therein, which then cures to define the shell.

REFERENCES:
patent: 3328500 (1967-06-01), Barnette
patent: 3832264 (1974-08-01), Barnette
patent: 4374693 (1983-02-01), Pitt
patent: 4560523 (1985-12-01), Plumley et al.

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