Title:
紙基材、紙製シート、カップ状包装容器およびその製造方法
Document Type and Number:
Japanese Patent JP7205385
Kind Code:
B2
Abstract:
To provide a paper base material excellent in processability and appearance as a packaging container, easy to hold with moderate rigidity, and excellent in printability, and to provide a paper sheet using the paper base material, a cup-shaped packaging container, and a method for manufacturing the paper base material.SOLUTION: A paper base material of this invention comprises cellulose pulp as a main component and 3 or more pulp layers, has a basis weight of 150 to 500 g/m2, a density of 0.80 to 0.97 g/cm3, and a fiber orientation ratio of all the layers of 1.15 to 2.10. Further, a paper sheet and a cup-shaped packaging container using the paper base material are provided. The method for manufacturing the paper base material is also provided.SELECTED DRAWING: None
Inventors:
Masakazu Makimoto
Tomiko Ishikawa
Hiroshi Yamanaka
Tomiko Ishikawa
Hiroshi Yamanaka
Application Number:
JP2019102105A
Publication Date:
January 17, 2023
Filing Date:
May 31, 2019
Export Citation:
Assignee:
Oji Holdings Co., Ltd.
International Classes:
D21H27/00; B32B27/10; B65D3/00; D21H27/30
Domestic Patent References:
| JP2019065436A | ||||
| JP6101190A | ||||
| JP2004360129A |
Attorney, Agent or Firm:
Patent Attorney Corporation Isono International Patent and Trademark Office