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1. WO2022004635 - WATER-RESISTANT PAPER AND PRODUCTION METHOD THEREFOR

Publication Number WO/2022/004635
Publication Date 06.01.2022
International Application No. PCT/JP2021/024308
International Filing Date 28.06.2021
IPC
B65D 65/42 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
65Wrappers or flexible covers; Packaging materials of special type or form
38Packaging materials of special type or form
42Applications of coated or impregnated materials
D21H 19/18 2006.1
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
19Coated paper; Coating material
10Coatings without pigments
14applied in a form other than the aqueous solution defined in group D21H19/1295
18comprising waxes
D21H 19/20 2006.1
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
19Coated paper; Coating material
10Coatings without pigments
14applied in a form other than the aqueous solution defined in group D21H19/1295
20comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
D21H 19/82 2006.1
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
19Coated paper; Coating material
80Paper comprising more than one coating
82superposed
D21H 21/16 2006.1
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
21Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper impregnating or coating material, characterised by its function, form or properties
14characterised by function or properties in or on the paper
16Sizing or water-repelling agents
Applicants
  • 日本製紙株式会社 NIPPON PAPER INDUSTRIES CO., LTD. [JP]/[JP]
Inventors
  • 川真田 友紀 KAWAMATA, Tomonori
  • 畠山 知也 HATAKEYAMA, Tomoya
  • 奥村 寛之 OKUMURA, Hiroyuki
Agents
  • 山本 修 YAMAMOTO, Osamu
  • 中村 充利 NAKAMURA, Mitsutoshi
  • 小笠原 有紀 OGASAWARA, Yuki
  • 新井 規之 ARAI, Noriyuki
Priority Data
2020-11560203.07.2020JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) WATER-RESISTANT PAPER AND PRODUCTION METHOD THEREFOR
(FR) PAPIER RÉSISTANT À L’EAU ET PROCÉDÉ DE PRODUCTION POUR CELUI-CI
(JA) 防水紙およびその製造方法
Abstract
(EN) The present invention addresses the problem of developing a technique for manufacturing a paper having moisture resistance and water resistance. The present invention provides a water-resistant paper formed by providing, on a paper substrate having a 120-sec Cobb absorptiveness of 5-25 g/m2 and a water repellency of at least R4 as defined in the paper-and-pulp test method No. 68, a coating layer that contains a waterproofing agent including a wax and at least one of a styrene resin, an acrylic resin, and a polyolefin resin.
(FR) La présente invention vise à procurer une technique pour fabriquer un papier ayant une résistance à l’humidité et une résistance à l’eau. La présente invention concerne un papier résistant à l'eau, lequel papier est formé par le fait de disposer, sur un substrat de papier ayant une capacité d’absorption Cobb à 120 s de 5 à 25 g/m2 et un caractère hydrofuge d'au moins R4 comme défini dans la méthode de test de papier et de pâte N° 68, une couche de revêtement qui contient un agent d'imperméabilisation comprenant une cire et au moins l'une d'une résine de styrène, d'une résine acrylique et d'une résine de polyoléfine.
(JA) 本発明の課題は、防湿性と防水性を備えた紙を製造する技術を開発することである。 本発明によって、120秒コッブ吸水度が5~25g/m、紙パルプ試験方法No.68に規定する撥水度がR4以上である紙基材上に、スチレン系樹脂、アクリル系樹脂、ポリオレフィン樹脂の少なくとも1つおよびワックスを有する防水剤を含有する塗工層を設けた防水紙が提供される。
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