B - Operations – Transporting – 27 – N
Patent
B - Operations, Transporting
27
N
18/952, 154/97
B27N 5/00 (2006.01) B27N 3/06 (2006.01) E04C 2/24 (2006.01) E04D 3/35 (2006.01)
Patent
CA 1150465
ABSTRACT OF THE DISCLOSURE Weather resistant boards (for instance, particle boards, facade covering boards, and wall elements) and mouldings (for instance, containers, vessels, prefabricated building elements, and roof elements) of resin-impreg- nated wood fibres and/or other particle materials are provided herein. In the manufacturing process, the base fibres are coated with a solidly ad- hering outer coating of a vulcanizable weather-resistant rubber, or other elastomer, suitable for vulcanizing, without the addition of any adhesive binding medium. The process for the production applies the principle that the condensation of the adhesive agents in the laid-down batt of the fibre- particle mixture on at least one side of that batt as well as the vulcan- ization of the coating material are performed simultaneously, under the same physical conditions (pressure, temperature, time). By using the usual hot pressing machines, weather-resistant boards and mouldings can be produced in one single production run. The final product is an integral united material, in which the base and the coating material are impregnated one into the other within a facing area.
337295
Borden Ladner Gervais Llp
Hering Reinhard F.
LandOfFree
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