Title:
MANUFACTURING METHOD OF LAYER FILM, LAYER FILM, AND PACKAGING CONTAINER
Document Type and Number:
Japanese Patent JP2023137420
Kind Code:
A
Abstract:
To provide a manufacturing method of layer film, that can reduce an environmental load and prevent air bubbles from being formed in an adhesive layer, and to provide layer film and a packaging container.SOLUTION: In a manufacturing method of layer film, viscosity of a solventless type adhesive is 700-2000 mPa s at 50°C, and a coating apparatus includes: a pair of rolls; and a coating unit having a plurality of transfer rolls for sequentially transferring and supplying the solventless type adhesive, and an application roll which is arranged opposite to a doctor roll positioned at a supply start side end of the solventless type adhesive out of the plurality of transfer rolls, via a fine clearance. In the manufacturing method of layer film, circumferential speed of the doctor roll is 1.0-10.0 m/min.SELECTED DRAWING: Figure 1
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Inventors:
GOTO OSAMU
SAEKI MAYUMI
HARA TAKUYA
ITO YUSUKE
SAEKI MAYUMI
HARA TAKUYA
ITO YUSUKE
Application Number:
JP2022043627A
Publication Date:
September 29, 2023
Filing Date:
March 18, 2022
Export Citation:
Assignee:
TOYO SEIKAN KAISHA LTD
International Classes:
B05D1/28; B29C63/02; B29C65/48; B32B27/00; B32B37/12; B65D65/40; C09J11/06; C09J167/00
Attorney, Agent or Firm:
Nobuo Fujimoto