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Pulpa no maderera que tiene alto brillo y bajos residuos

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  • Title:
    Pulpa no maderera que tiene alto brillo y bajos residuos
  • Author: WEI, Ning ; YU, Zhiying ; 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: Se describen pulpas no maderera que tienen una longitud de fibra mayor de aproximadamente 1,70 mm y una brillantez de aproximadamente 80% o mayor. El grado relativamente alto de brillantez se logra sin una pérdida de longitud de fibra o rendimiento de pulpa. El alto grado de brillantez y la longitud de fibra relativamente larga hacen a las pulpas muy adecuadas para la fabricación de productos fibrosos colocados en húmedo, particularmente productos de tisú colocados en húmedo. Las pulpas pueden prepararse a partir de plantas de la familia Asparagaceae mediante formación de pulpa mecánica y más preferiblemente mediante una formación de pulpa quimio-mecánica utilizando una solución de peróxido alcalino de hidróxido de sodio donde la pulpa primaria se limpia para reducir los residuos antes del blanqueo. De preferencia, la pulpa primaria limpia tiene menos de aproximadamente 5% en peso de desechos antes del blanqueo. 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 of fiber length or pulp yield. The high degree of brightness and relatively long fiber length make 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 wt % debris prior to bleaching.
  • Creation Date: 2023
  • Language: Spanish
  • Source: esp@cenet
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