Stock material or miscellaneous articles – Sheet including cover or casing – Foamed or expanded material encased
Patent
1981-08-25
1983-06-14
Van Balen, William J.
Stock material or miscellaneous articles
Sheet including cover or casing
Foamed or expanded material encased
5449, 428 76, 4283044, 4283177, 4283197, 428327, B32B 106, B32B 318, B32B 326
Patent
active
043883583
ABSTRACT:
A rigid, shaped, mass support system, such as support or seating appliances for disabled or handicapped persons, is provided by charging a flexible container (2) made of elastic polymeric film with a uniform mixture of rigid particles of a mesh size relatively small compared to the size of the system and a curable adhesive polymeric binder material. The charged container (2) and its contents are molded to adapt to or fit the shape of the mass, such as the contour of that portion of the body to be supported, and evacuated to remove volatiles and fix the shape of the contents of the container. The adhesive binder is then cured to solidify the molded contents of the container to form a composite, from which the polymeric film can be stripped away, after which an adhesive paint is applied to seal and protect the surface.
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Technical Bulletin, Epotuf Epoxy Resin Hardener, Reichhold Chemicals, Inc., Mar. 1974.
Cowsar Donald R.
Davis Thomas A.
Southern Research Institute
University of Alabama
Van Balen William J.
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