PULPING METHODS, METHODS FOR MANUFACTURING PAPERBOARD, AND PAPERBOARD STRUCTURES

A pulping method includes chemical cooking of softwood chips to retain a high lignin content of about 18% to about 28% by weight and fiberization of the cooked softwood chips to a low residual wood shive content of at most 15% by weight. Un procédé de réduction en pâte comprend la cuisson chimique d...

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Bibliographische Detailangaben
Hauptverfasser:	HART, PETER W, PAULSEN, FRITZ G, DEJARNETTE, JOHN D
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	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
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Beschreibung
Zusammenfassung:	A pulping method includes chemical cooking of softwood chips to retain a high lignin content of about 18% to about 28% by weight and fiberization of the cooked softwood chips to a low residual wood shive content of at most 15% by weight. Un procédé de réduction en pâte comprend la cuisson chimique de copeaux de bois tendre pour conserver une teneur élevée en lignine d'environ 18 % à environ 28 % en poids et le défibrage des copeaux de bois tendre cuits pour obtenir une faible teneur résiduelle d'incuit d'au plus 15 % en poids.