PRINTING COATED PAPER

• Main Authors: SATO TATSUYA, URASAKI ATSUSHI, SHINODA HIROSHI, NISHINO FUMIAKI
• Format: Patent
• Language: English; Japanese
• Published: 27.09.2021
• Subjects: 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

To provide a printing coated paper which is matte type yet has a gloss at a printed part, has excellent ink dry property, and can suppress mottling formation.SOLUTION: A matte type printing coated paper includes a base paper involving a pulp and a filler and a coating layer formed on both sides of the base paper and involving a white pigment and a binder, wherein the white pigment involves at least calcium carbonate and kaolin, a kaolin content in each coating layer is 10 mass parts or over and 50 mass parts or under towards 100 mass parts of the white pigment in the coating layer, the binder involves at least urea phosphate-esterified starch and styrene-butadiene-acrylonitrile copolymer; and has a specific air permeability, which is obtained by dividing an air permeability (s), obtained in accordance with ISO5636-6:2015, with the basis weight, of 36 (s/basis weight) or over and 65 (s/basis weight) or under.SELECTED DRAWING: None 【課題】本発明の目的は、マットタイプでありながら印刷部光沢感を有し、インキ乾燥性に優れ、及びモットリングの発生を抑える印刷用塗工紙を提供することである。【解決手段】課題は、パルプ及び填料を含有する基紙と、基紙の両面に白色顔料及びバインダーを含有する塗工層とを有し、白色顔料が炭酸カルシウム及びカオリンを少なくとも含み、個々の塗工層においてカオリンの含有量が塗工層中の白色顔料１００質量部に対して１０質量部以上５０質量部以下であり、バインダーが尿素燐酸エステル化澱粉及びスチレンブタジエンアクリロニトリル共重合体を少なくとも含み、ＩＳＯ５６３６−６：２０１５に準じて求められる透気度（秒）を坪量で除した比透気度が３６（秒／坪量）以上６５（秒／坪量）以下であるマットタイプの印刷用塗工紙によって解決される。【選択図】なし