公开(公告)号：US20240152051A1

公开(公告)日：2024-05-09

申请号：US18280023

申请日：2022-03-28

Applicant: ASAHI KASEI KABUSHIKI KAISHA

Inventor： Sota TOYOOKA ,  Yuzo FUJIKI ,  Shinji MIYAMOTO

IPC: G03F7/11 ,  B41C1/18 ,  B41M1/04 ,  B41N1/16 ,  C08F236/06 ,  C08G63/183 ,  C09D109/00 ,  C09D167/02

CPC classification number: G03F7/11 ,  B41C1/18 ,  B41M1/04 ,  B41N1/16 ,  C08F236/06 ,  C08G63/183 ,  C09D109/00 ,  C09D167/02 ,  B41P2200/12

Abstract: A flexographic printing raw plate including:



a support;
a photosensitive resin composition layer on the support;
an intermediate layer; and
an infrared ablation layer in the presented order, wherein
in a tensile stress-strain curve diagram measured by molding the intermediate layer into dumbbell shape No. 8 with a thickness of 100 μm in accordance with JIS K 6251 (2017),
an elongation at a breaking point is 5% or more and 200% or less,
an elongation at a point where the stress is maximized is 3% or more and 200% or less, and
a maximum value of the stress is 1.0 MPa or more and 15 MPa or less.

公开(公告)号：US20240111213A1

公开(公告)日：2024-04-04

申请号：US18276362

申请日：2022-02-10

Applicant: ASAHI KASEI KABUSHIKI KAISHA

Inventor： Yuzo FUJIKI ,  Sota TOYOOKA ,  Shinji MIYAMOTO ,  Masashi FURUKAWA

IPC: G03F7/11

CPC classification number: G03F7/11

Abstract: A flexographic printing raw plate including at least a support, a photosensitive resin composition layer, an ink absorbing layer, and an infrared ablation layer sequentially stacked, wherein the ink absorbing layer has a film thickness of 5 μm or more and 50 μm or less, the ink absorbing layer comprises polymer particles containing a butadiene skeleton and having a carboxyl group and/or a hydroxy group, and/or polymer particles obtained by polymerizing a monobasic or polybasic acid monomer, and a content of the polymer particles is 20% by mass or more and 95% by mass or less based on 100% by mass of the ink absorbing layer.

公开(公告)号：US20240012328A1

公开(公告)日：2024-01-11

申请号：US18037437

申请日：2021-12-14

Applicant: ASAHI KASEI KABUSHIKI KAISHA

Inventor： Hiroki AKIYAMA ,  Shinji MIYAMOTO

IPC: G03F7/11 ,  C08F10/10 ,  C08F120/14 ,  B41C1/10 ,  B41F5/24

CPC classification number: G03F7/11 ,  C08F10/10 ,  C08F120/14 ,  B41C1/10 ,  B41F5/24

Abstract: A photosensitive resin structure for a flexographic printing plate, including: a support (a); a photosensitive resin composition layer (b) laminated on the support (a); and an infrared ray ablation layer (c) laminated on the photosensitive resin composition layer (b), wherein the infrared ray ablation layer (c) contains a resin having a predetermined constituent unit (c1).

公开(公告)号：US20230305402A1

公开(公告)日：2023-09-28

申请号：US18023039

申请日：2021-09-15

Applicant: ASAHI KASEI KABUSHIKI KAISHA

Inventor： Hiroki AKIYAMA ,  Shinji MIYAMOTO

IPC: G03F7/095 ,  G03F7/039 ,  B41C1/10

CPC classification number: G03F7/095 ,  G03F7/039 ,  B41C1/1033

Abstract: A photosensitive resin structure for a flexographic printing plate, containing



(a): a support;
(b): a photosensitive resin composition layer which is located on the support (a) and which contains a thermoplastic elastomer having a copolymer site of a monovinyl-substituted aromatic hydrocarbon and a conjugated diene; and
(c): an infrared ray ablation layer which is laminated on the photosensitive resin composition layer (b) and which comprises a resin and carbon black, is ablatable with an infrared laser, and is a layer shielding a light beam other than infrared ray, wherein
the resin in the infrared ray ablation layer (c) contains a copolymer of a monovinyl-substituted aromatic hydrocarbon and a conjugated diene, or a hydrogenated copolymer of a monovinyl-substituted aromatic hydrocarbon and a conjugated diene, and
a primary particle diameter of the carbon black contained in the infrared ray ablation layer (c) is 13 nm or larger and 25 nm or smaller.