PRODUCTION OF PRINTING COATED PAPER

PRODUCTION OF PRINTING COATED PAPER

PURPOSE:To obtain the subject coated paper, excellent is smoothness, paper stiffness, rigidity, etc., by coating base paper with a coating composition so as to provide specific values of dynamic wetting value of base paper and glass transition temperature of an adhesive and then calendering the coat...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: SAJI SOICHI, NAKARAI TATSUYA, HAMADA HIROSUKE
Format: Patent
Sprache:eng
Schlagworte:
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
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Beschreibung
Zusammenfassung:PURPOSE:To obtain the subject coated paper, excellent is smoothness, paper stiffness, rigidity, etc., by coating base paper with a coating composition so as to provide specific values of dynamic wetting value of base paper and glass transition temperature of an adhesive and then calendering the coated paper. CONSTITUTION:(A) A base paper having preferably 30-400g/m metric basic weight is regulated to provide -0.30 to 0.20g dynamic wetting value. A coating composition prepared by blending (B) 100 pts.wt. pigment (e.g., kaolin) with (C) preferably 5-50 pts.wt. polymer latex, such as styrene-butadiene copolymer, having -20 to 35 deg.C glass transition temperature as an adhesive is applied thereto ad dried. The obtained paper is then threaded through a calender at >=100 deg.C surface temperature to afford the objective coated paper.