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HIGH BRIGHTNESS NON-WOOD PULP
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Title:
HIGH BRIGHTNESS NON-WOOD PULP
Author:
ACKERLY, Samantha C
;
YU, Zhiying
;
PAULSON, David J
;
SHANNON, Thomas G
Subjects:
APPARATUS THEREFOR
;
IMPREGNATING OR COATING OF PAPER
;
PAPER NOT OTHERWISE PROVIDED FOR
;
PAPER-MAKING
;
PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D
;
PRODUCTION OF CELLULOSE
;
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
;
PULP COMPOSITIONS
;
REGENERATION OF PULPING LIQUORS
;
TEXTILES
;
TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
Description:
Disclosed are non-wood pulps having a fiber length greater than about 1.70 mm and a brightness of about 80% or greater. The relatively high degree of brightness is achieved without a loss fiber length or pulp yield. The high degree of brightness and relatively long fiber length makes the pulps well suited for the manufacture of wet-laid fibrous products, particularly wet-laid tissue products. The pulps may be prepared from plants of the family Asparagaceae by mechanical pulping and more preferably by a chemi-mechanical pulping using a sodium hydroxide alkaline peroxide solution where the primary pulp is cleaned to reduce debris prior to bleaching. Preferably the cleaned primary pulp has less than about 5% debris prior to bleaching. L'invention concerne des pâtes non ligneuses ayant une longueur de fibres supérieure à environ 1,70 mm et une luminosité d'environ 80 % ou plus. Le degré de luminosité relativement élevé est obtenu sans perte de longueur de fibres ou de rendement en fibres. Le degré de luminosité élevé et la longueur de fibres relativement élevée rendent les pâtes bien appropriées pour la fabrication de produits fibreux obtenus par voie humide, en particulier de produits de papier sanitaire et domestique obtenus par voie humide. Les pâtes peuvent être préparées à partir de plantes de la famille des Asparagaceae par réduction en pâte mécanique et plus préférablement par une réduction en pâte chimico-mécanique à l'aide d'une solution de peroxyde alcaline d'hydroxyde de sodium, la pâte primaire étant nettoyée pour réduire la quantité de débris avant le blanchiment. De préférence, la pâte primaire nettoyée présente moins d'environ 5 % de débris avant le blanchiment.
Creation Date:
2022
Language:
English;French
Source:
esp@cenet
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