Method and device for selective impregnation of heterogenous...

Details Method and device for selective impregnation of heterogenous... Method and device for selective impregnation of heterogenous...

D - Textiles, Paper

21

C

92/57.1

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

Patent

CA 1038675

Abstract of the Disclosure There is disclosed a method of obtaining selective impregnation of heterogenous fiber containing material during feeding-in of the fiber material through an impregnation space to a pressure vessel, wherein a mixture of fiber material and transport liquid in an uninterrupted flow is pumped through a feeding line-opening into a liquid filled space in the pressure vessel where transport liquid is separated from the mixture through one or more outlets located higher than the entry point of the feeding line, and wherein particles of the fiber material which do not sink in the liquid but float upwards are permitted to follow the separated transport liquid in recirculation through the impregnation space in order to obtain prolonged impregnation time compared to the fiber particles which sink. An apparatus for carrying out the method is also disclosed. The method leads to a more even impregnation of hetero- geneous fiber material.

266437

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