Method of producing shaped articles of fiber/binder mixtures

Details Method of producing shaped articles of fiber/binder mixtures Method of producing shaped articles of fiber/binder mixtures

B - Operations, Transporting

28

B

25/111, 241/130

B28B 1/52 (2006.01) B02C 23/18 (2006.01) B27N 1/02 (2006.01) B28B 17/02 (2006.01) B28B 21/56 (2006.01) C04B 28/02 (2006.01) D21J 3/00 (2006.01)

Patent

CA 2031255

Paper or cellulose pieces forming a fiber raw material are wetted with water prior to comminution so that the comminution into fibers is effected with the moistened raw material. The moisture content of the fibers makes up at least part of the water of hydration required to completely set the binder which is mixed with the fibers. The binder can be plaster (gypsum) or hydraulic cement. The mixture is pressed to the desired shape and heat may be applied.

Les morceaux de papier ou de cellulose formant une matière brute fibreuse sont mouillés avant l'étape du déchiquetage pour obtenir des fibres humides. La teneur en humidité des fibres constitue au moins une partie de l'apport d'eau d'hydratation nécessaire pour la prise complète du liant mélangé aux fibres. Le liant peut être du plâtre (gypse) ou un ciment hydraulique. Le mélange obtenu est mis à la forme voulue par pressage avec apport de chaleur au besoin.

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