Stock material or miscellaneous articles – Sheet including cover or casing – Noninterengaged fibered material encased
Patent
1985-10-07
1987-09-01
Bell, James J.
Stock material or miscellaneous articles
Sheet including cover or casing
Noninterengaged fibered material encased
428282, 428283, 428284, 428285, 428290, 428326, 428402, 428496, B32B 104
Patent
active
046908480
ABSTRACT:
Weather-resistant boards are provided herein which are possessed of surface elasticity and pliancy by means of a permanently elastic, covering layer (for example, particle boards, facade covering boards, and wall elements) and mouldings (for instance, containers, vessels, prefabricated building elements, and roof elements), the base material being lignocellulose or other organic materials and/or inorganic materials, either as fibres or as particle materials. Such weather resistant boards consist of three layers. The first layer is an impregnatable porous, base material as defined above. The second layer is a vulcanized outer covering layer constituted by an vulcanized, weather-resistant resilient synthetic elastomeric material which has been vulcanized therein in situ at a temperature of at least 175.degree. C. The third layer is the outer originally unvulcanized resilient synthetic elastomeric material, which is penetrated and impregnated below and into the same outer surface of the base material to be within the porous structure of the base material for only a predetermined limited region in the vicinity of the outer surface of the base material and being vulcanized therein in situ at a temperature of at least 175.degree. C. The board is an integral united material, in which the base and the coating material are impregnated one into the other within a facing area.
REFERENCES:
patent: 4562111 (1985-12-01), Ogawa
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