Process for the manufacture of shaped articles and product...

Details Process for the manufacture of shaped articles and product... Process for the manufacture of shaped articles and product...

D - Textiles, Paper

21

H

D21H 11/12 (2006.01) B27N 1/00 (2006.01) B27N 1/02 (2006.01) B27N 3/18 (2006.01)

Patent

CA 2168539

A process for preparing shaped articles comprises the steps of: (a) mixing a water curable binder with vegetable particulate material to form a first mixture, the moisture content of said first mixture being insufficient to cure said binder prior to said mixture being placed in a mold; (b) feeding said first mixture to a mold having molding plates, said molding plates and said first mixture defining an interface; (c) providing water to at least a portion of said interface, the amount of water added at said interface, in conjunction with the moisture content of said first mixture, being sufficient to cure said binder; and, (d) subjecting said first mixture to elevated temperatures and pressures.

Procédé de fabrication d'articles façonnés comprenant les étapes suivantes : a) mélanger un liant qui durcit au contact de l'eau avec un matériau de particules végétales pour former un mélange dont la teneur en eau n'est pas suffisante pour provoquer le durcissement du liant avant qu'il soit placé dans un moule; b) mettre le mélange dans un moule dont les cavités forment une surface de contact avec celui-ci; c) ajouter suffisament d'eau, en fonction de la quantité d'eau déjà présente dans le mélange, à au moins une portion de la surface de contact afin de provoquer le durcissement du liant; et d) soumettre le mélange à une température et à une pression élevées.

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