The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 13, 1981
Filed:
Apr. 11, 1978
Applicant:
Inventors:
Jonas A Lindahl, Domsjoverken, SE;
Lars G Rudstrom, Husum, SE;
Assignee:
Mo och Domsjo Aktiebolag, Ornskoldsvik, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21B / ; D21D / ;
U.S. Cl.
CPC ...
162 25 ; 162 26 ; 162 28 ; 162 37 ; 162 40 ; 162 72 ; 162 78 ; 162 83 ;
Abstract
A process is provided for the manufacture of bleached chemimechanical cellulose pulp in high yield of between 65 and 95% from particulate and preferably washed lignocellulosic material, such as wood chips, featuring the use of spent or waste bleaching liquid, preferably from a lignin-preserving bleaching process, in at least one stage of the process where a cooling and diluting liquid is required, such as during mechanical defibration of the material.