Process for producing stone groundwood pulp from wood chips by u

Details Process for producing stone groundwood pulp from wood chips by u Process for producing stone groundwood pulp from wood chips by u

1978-10-04

1981-01-27

Bashore, S. Leon

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With plural or specified mechanical defibering step

162 56, 162 68, 162 83, 162 90, 241 28, B21B 114, B27L 1108

Patent

active

042473632

ABSTRACT:
Disclosed is a process for producing stone groundwood pump from wood chips, by compressing a wood chip mass into an apparent volume corresponding to 70% or less, preferably, from 40 to 60%, of the original apparent volume of the wood chip mass and by grinding the compressed wood chip mass, under pressure, with a stone grinder. The wood chips may be treated, before the grinding step, with both or either one of steam and a treating agent, such as sodium monosulfite, sodium disulfite and sodium bicarbonate.

REFERENCES:
patent: 1399976 (1921-12-01), Manson
patent: 1532946 (1925-04-01), Rabus
patent: 2075023 (1937-03-01), David
patent: 2689092 (1954-09-01), Clark et al.
patent: 3612413 (1971-10-01), Pessy
patent: 3690568 (1972-09-01), Alexander
MacDonald et al., editor, "Pulp and Paper Manufacture, vol. I", McGraw-Hill Book Co., pp. 172-175, 1969.
Casey, "Pulp and Paper, vol. I, 2nd Edition", Interscience Publishers Inc., N.Y., 1960, pp. 319-321.

Affiliated with

Also associated with

Rating

Process for producing stone groundwood pulp from wood chips by u does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing stone groundwood pulp from wood chips by u, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing stone groundwood pulp from wood chips by u will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1180272