Title:
TRANSPARENT HYGROSCOPIC FILM
Document Type and Number:
Japanese Patent JP2021146296
Kind Code:
A
Abstract:
To provide a transparent hygroscopic film that has both transparency and hygroscopic property at the same time and allows a user to recognize deactivation due to moisture absorption.SOLUTION: A transparent hygroscopic film includes a transparent barrier base material layer 12, a discoloration hygroscopic layer 18 and a transparent hygroscopic layer 14. The transparent hygroscopic layer 14 contains a thermoplastic resin and a moisture absorbent. The discoloration hygroscopic layer 18 is a layer capable of changing the color thereof by absorbing moisture and present in part of a region between the transparent hygroscopic layer 14 and the transparent barrier base material layer 12.SELECTED DRAWING: Figure 1
Inventors:
SEKIYA NAOMI
YASUDA ATSUSHI
KATO SHU
YASUDA ATSUSHI
KATO SHU
Application Number:
JP2020049853A
Publication Date:
September 27, 2021
Filing Date:
March 19, 2020
Export Citation:
Assignee:
KYODO PRINTING CO LTD
International Classes:
B01D53/26; B65D65/40; C08K3/34; C08K5/103; C08L23/00
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Foreign References:
| WO2017164352A1 | 2017-09-28 |
Attorney, Agent or Firm:
Atsushi Aoki
Shinji Mitsuhashi
Nobuo Sekine
Naori Kota
Yoshitaka Kurata
Shinji Mitsuhashi
Nobuo Sekine
Naori Kota
Yoshitaka Kurata