Method and device for impregnation of fiber material before...

Details Method and device for impregnation of fiber material before... Method and device for impregnation of fiber material before...

D - Textiles, Paper

21

B

9/33

D21B 1/10 (2006.01) D21C 1/00 (2006.01) D21C 7/06 (2006.01)

Patent

CA 1075858

ABSTRACT Method for continuous disgesting of containing containing material with a liquid by means of alternating pressure to obtain preimpregnation of the fiber material in a liquid-filled feeding-in impregnation vessel between a digester and a feeding device, which is equipped with a device for separating off a liquid quantity which is recirculated to the feeding device for transport of more fiber material and which is connected with the digester through a repeated periodically opening and closing valve device, characterized in that the pressure in the impregnation vessel is alternating between the pressure in the digester, and a lower pressure obtained by removal from the impregnation vessel of a volume of liquid by means of the negative pumping action of the feeding device.

253437

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