公开(公告)号：US20240139771A1

公开(公告)日：2024-05-02

申请号：US18565645

申请日：2022-06-10

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Ryuji HASHIMOTO ,  Toshihito SHIMIZU ,  Junya YAMADA

IPC: B05D7/00

CPC classification number: B05D7/546 ,  B05D2201/02 ,  B05D2401/40 ,  B05D2601/22

Abstract: A functional film 1 according to an embodiment includes: a substrate (10) containing an acetyl cellulose resin; a primer layer (20) containing a filler (40) and disposed on the substrate (10); and a functional layer (30) containing the filler (40) and disposed on the primer layer (20). The substrate (10) has a permeation layer (12) formed by permeation of the resin contained in the primer layer (20) into part of the substrate (10). The permeation layer (12) has a thickness of 0.1 μm or more and 3.5 μm or less. The primer layer (20) has a thickness of 0.1 μm or more and 1.0 μm or less. The filler (40) is silica particles having an average particle size of 20 nm or more and 80 nm or less. The filler (40) in the primer layer (20) has a density of ⅓ or more and ¾ or less of the density of the filler (40) in the functional layer (30). The primer layer (20) and the functional layer (30) each contain a resin. The resin component of the primer layer (20) is the same as the resin component of the functional layer 30.