Title:
LAMINATED FILM
Document Type and Number:
WIPO Patent Application WO/2022/075425
Kind Code:
A1
Abstract:
Provided is a laminated film in which curling is reduced when heat sealing is performed with a material differing from a base material. The laminated film comprises: a base material which comprises polyethylene terephthalate; and a sealant which is laminated to one surface of the base material and which seals a different-type material that comprises a material differing from the base material, wherein when a laminate which is obtained by heat-sealing an 80 mm × 80 mm square of the different-type material to the center of the sealant in an 100 mm × 100 mm square of the laminated film is placed on a flat surface such that the different-type material faces down, the height to which the corners of the different-type material rise up from the flat surface is not more than 20 mm.
Inventors:
NAKATA HIROKI
Application Number:
PCT/JP2021/037226
Publication Date:
April 14, 2022
Filing Date:
October 07, 2021
Export Citation:
Assignee:
TOPPAN INC (JP)
International Classes:
B32B27/00; B32B27/36; B65D65/40
Domestic Patent References:
| WO2020031712A1 | 2020-02-13 |
Foreign References:
| JPH11254576A | 1999-09-21 | |||
| JP2006281657A | 2006-10-19 | |||
| JP2019166809A | 2019-10-03 | |||
| JP2018012237A | 2018-01-25 |
Other References:
See also references of EP 4227085A4
Attorney, Agent or Firm:
OGASAWARA PATENT OFFICE (JP)
Download PDF: