D - Textiles – Paper – 21 – B
Patent
D - Textiles, Paper
21
B
9/1, 92/34
D21B 1/32 (2006.01) B03B 5/42 (2006.01) B03B 9/06 (2006.01) D21B 1/02 (2006.01)
Patent
CA 1107916
ABSTRACT OF THE DISCLOSURE A method and apparatus for treating waste paper by pulping or defibering the paper in a stock pulper or slusher while infeeding water, wherein there are removed in suc- cession, externally of the stock pulper, heavy weight particles, floatable substances and plastic foils. There- after, paper constituents which have incompletely defi- berized are removed and further defibered in a special apparatus. The already defibered fibers are directly infed for further processing. The removal of the contaminants can be accomplished at a suspension density in the order of 1%, whereas the defibering or pulping of the waste paper in the stock pulper occurs at about 4%. The employed sorting appa- ratus is connected with the stock pulper, while dispensing with the use of a sieve or screen.
321965
Escher Wyss G.m.b.h.
Johnson & Hicks
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