Title:
紙製シート材の製造方法及び紙製シート材で構成される収容袋
Document Type and Number:
Japanese Patent JP7446201
Kind Code:
B2
Abstract:
To provide a paper sheet material manufacturing method that enables an aqueous heat seal layer to be stably formed with respect to a paper substrate of equal to or less than 35 g/m2.SOLUTION: The present invention is a paper sheet material manufacturing method of using a flexographic press to form a plurality of heat seal layers formed of an aqueous heat seal material by a printing unit of the flexographic press with respect to at least one surface of a paper substrate of equal to or less than 35 g/m2. While a paper substrate 1A is wound around a center drum 20 of the flexographic press and conveyed, printing units 21 to 28 stack four or more heat seal layers. At the time of stack formation of the heat seal layer, after one heat seal layer is formed, vacuum printing process is performed on a downstream side of the heat seal layer.SELECTED DRAWING: Figure 2
Inventors:
Mutsuo Namba
Application Number:
JP2020178830A
Publication Date:
March 08, 2024
Filing Date:
October 26, 2020
Export Citation:
Assignee:
Sanei Kaken Co., Ltd.
International Classes:
B05D7/00; B32B27/10; B32B38/16; B65D65/40; D21H19/82
Domestic Patent References:
| JP2011051242A | ||||
| JP2019209580A | ||||
| JP2004075076A |
Foreign References:
| WO2019107025A1 |
Attorney, Agent or Firm:
Koji Mizuno
Ryo Matsushita
Ryo Matsushita