Apparatus for coating a structure with a uniform foam layer

Details Apparatus for coating a structure with a uniform foam layer Apparatus for coating a structure with a uniform foam layer

1976-07-30

1978-04-11

Rimrodt, Louis K.

Coating apparatus

Projection or spray type

118323, 156 78, 264 42, 264 467, B05C 500

Patent

active

040833240

ABSTRACT:
An apparatus for forming a layer of low density foam of uniform thickness on a surface is disclosed. A plurality of upstanding studs spaced across the surface to be coated support a taut screen at a selected height above the surface. An applicator applies liquid, self-rising foam material in a uniform manner to said surface through said screen. As the foam rises, it penetrates through the screen, leaving irregular projections above the screen. After the foam cures to at least a self-sustaining state, the screen is stripped away, leaving a uniform foam layer. Since the screen offers very little resistance to the rising foam, the resulting foam layer has a very uniform low density, highly desirable for thermal insulation application.

REFERENCES:
patent: 2770864 (1956-11-01), Weese
patent: 3082486 (1963-03-01), Khawam et al.
patent: 3660548 (1972-05-01), Komada et al.
patent: 3879240 (1975-04-01), Wall
patent: 4009236 (1977-02-01), Katsuta

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