Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Automatic and/or material-triggered control
Patent
1974-06-20
1976-05-04
Whitby, Edward G.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Automatic and/or material-triggered control
156 79, 156378, 156526, 156527, 425 4C, 425817R, G01B 700
Patent
active
039545440
ABSTRACT:
An apparatus for in situ preparing and applying foam to a surface, such as a roof, and at the same time applying a membrane onto the surface of the foam, produces a foam-membrane sandwich having an upper surface of controlled smoothness and thickness or pitch, which sandwich is firmly held to the treated surface. The apparatus is normally self-propelled and may be automatically controlled so as to be advanced across the surface to be coated with membrane-covered rigid polymeric foam, preferably of polyurethane foam, as the curing pre-foam and covering membrane are applied. In preferred embodiments of the invention the membrane is a roofing felt or fiberglass web, mat, treated paper or cloth fed from the apparatus from a roll thereon, producing with the roof or other surface to be coated, a form into which a curing pre-foam is deposited as the apparatus is advanced.
Also within the invention are processes of producing a membrane-covered, rigid polymeric foam covering on surfaces, such as roofs, by application of a curing pre-foam to the roof under a covering, smoothing and height- or pitch-establishing membrane to which the foam adheres upon curing.
REFERENCES:
patent: 3105745 (1963-10-01), Vieli
patent: 3189498 (1965-06-01), Rapp
patent: 3638540 (1970-02-01), Williams
patent: 3698972 (1972-10-01), Lenzner
patent: 3804931 (1974-04-01), Miller
patent: 3807887 (1974-04-01), Tate
patent: 3860371 (1975-01-01), Willy
patent: 3867494 (1975-02-01), Rood et al.
Kramer Raymond F.
Whitby Edward G.
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