Platy or molded material and method of manufacturing the same

Details Platy or molded material and method of manufacturing the same Platy or molded material and method of manufacturing the same

B - Operations, Transporting

32

B

B32B 3/14 (2006.01) B32B 9/02 (2006.01) B32B 21/02 (2006.01) E04C 2/16 (2006.01) E04C 2/24 (2006.01)

Patent

CA 2192234

Natural vegetable fibers, which create a stronger bond with resins than can normally be obtained using manmade fibers, are used to provide a board or other molded material characterized by its high moisture permeability and strength. This object is achieved by first collecting palm fibers, which consist of thick individual fibers with large gaps in between, and binding them together securely with resin to form a fiber mat. This is then reinforced by using curable resin to bond said fiber mat with a sheet of woven or nonwoven fabric made from natural vegetable fibers such as hemp or with a sheet made of thin strips of bamboo, all of which have a high tensile strength and a high modulus of tensile elasticity. The invention also includes a method for the manufacture of such boards or other molded materials.

L'invention fait appel à des fibres végétales adhérant mieux à une résine que les fibres artificielles. On utilise en particulier des fibres de palmiers présentant des espacements importants entre des fibres grossières. Ces fibres sont liées fermement ensemble par une résine. Le produit obtenu et renforcé par la résine est combiné avec un matériau tricoté ou tissé constitué de fibres végétales présentant une résistance élevée à la rupture et un module d'élasticité élevé, comme celles du chanvre, ou avec une feuille en un matériau non tissé, ou avec des minces lattes de bambou. Les articles stratifiés ou moulés obtenus sont très perméables à l'humidité et ils sont très solides. On décrit également des procédés pour fabriquer ces articles.

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