A METHOD AND APPARATUS FOR PRODUCING LWC-PAPER

A method of manufacturing high-gloss paper wherein paper is coated on both sides thereof and the coating dried and the paper thereafter passed into a compact calender having two or more roll pairs, each including a heated hard roll and a non-heated soft roll, wherein the roll surface of the hard rol...

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Main Authors WINTER, LARS, AKSNES, FREDRIK, BERG, ANETTE, WEDIN, IRENE
Format Patent
LanguageEnglish
French
Published 27.11.1997
Edition6
Subjects
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Abstract A method of manufacturing high-gloss paper wherein paper is coated on both sides thereof and the coating dried and the paper thereafter passed into a compact calender having two or more roll pairs, each including a heated hard roll and a non-heated soft roll, wherein the roll surface of the hard roll in each pair is maintained at a temperature of 150-210 DEG C, the line pressure at 200-470 kN/m and the machine speed at 900-1,800 m/min. Apparatus for carrying out the method includes a coating station, a compact calender arranged in line therewith, and means for maintaining the temperature of the paper beneath the lignin softening point during passage of the paper through the calender. L'invention porte sur un procédé de fabrication d'un papier à brillant élevé enduit sur ses deux faces. Après séchage du revêtement le papier passe dans une calandreuse compacte à deux paires de rouleaux ou plus comprenant chacune un rouleau dur chauffé et un rouleau tendre non chauffé, la température du rouleau chauffé étant maintenue entre 150 et 210 DEG C, la pression calandre, entre 200 et 470 kN/m et la vitesse de la machine, entre 900 et 1800 m/min. L'invention porte également sur l'appareil de mise en oeuvre du procédé comportant un poste d'enduction, une calandreuse compacte en ligne avec le poste, et des moyens maintenant la température au-dessous du point de ramollissement de la lignine lors du passage du papier dans la calandreuse.
AbstractList A method of manufacturing high-gloss paper wherein paper is coated on both sides thereof and the coating dried and the paper thereafter passed into a compact calender having two or more roll pairs, each including a heated hard roll and a non-heated soft roll, wherein the roll surface of the hard roll in each pair is maintained at a temperature of 150-210 DEG C, the line pressure at 200-470 kN/m and the machine speed at 900-1,800 m/min. Apparatus for carrying out the method includes a coating station, a compact calender arranged in line therewith, and means for maintaining the temperature of the paper beneath the lignin softening point during passage of the paper through the calender. L'invention porte sur un procédé de fabrication d'un papier à brillant élevé enduit sur ses deux faces. Après séchage du revêtement le papier passe dans une calandreuse compacte à deux paires de rouleaux ou plus comprenant chacune un rouleau dur chauffé et un rouleau tendre non chauffé, la température du rouleau chauffé étant maintenue entre 150 et 210 DEG C, la pression calandre, entre 200 et 470 kN/m et la vitesse de la machine, entre 900 et 1800 m/min. L'invention porte également sur l'appareil de mise en oeuvre du procédé comportant un poste d'enduction, une calandreuse compacte en ligne avec le poste, et des moyens maintenant la température au-dessous du point de ramollissement de la lignine lors du passage du papier dans la calandreuse.
Author AKSNES, FREDRIK
WEDIN, IRENE
WINTER, LARS
BERG, ANETTE
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WEDIN, IRENE
WINTER, LARS
BERG, ANETTE
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Snippet A method of manufacturing high-gloss paper wherein paper is coated on both sides thereof and the coating dried and the paper thereafter passed into a compact...
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SourceType Open Access Repository
SubjectTerms ACCESSORIES FOR PAPER-MAKING MACHINES
CALENDERS
IMPREGNATING OR COATING OF PAPER
PAPER NOT OTHERWISE PROVIDED FOR
PAPER-MAKING
PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D
PRODUCTION OF CELLULOSE
PULP COMPOSITIONS
TEXTILES
TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
Title A METHOD AND APPARATUS FOR PRODUCING LWC-PAPER
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