公开(公告)号：US20230052513A1

公开(公告)日：2023-02-16

申请号：US17791942

申请日：2020-12-07

申请人： NIPPON CARBIDE INDUSTRIES CO., INC.

发明人： Daisuke Yoneda ,  Misato Matsuno

IPC分类号： C09J7/29 ,  C09J7/38 ,  C08K5/1515

摘要： Provided is a multilayer body having good print readability and removability. A multilayer body (1) is for a laser marking label and includes a first layer (10) allowing laser light to pass through, a second layer (20) developing a color by laser light, and a third layer (30) having adhesiveness, which are stacked in this order. The second layer (20) consists of a resin composition containing an acrylic-based copolymer, an isocyanate-based crosslinking agent, a color development pigment, and a white pigment. The isocyanate-based crosslinking agent is selected from (i) an aromatic-aliphatic isocyanate-based crosslinking agent or (ii) a mixture of an aliphatic or alicyclic isocyanate-based crosslinking agent and an aromatic isocyanate-based crosslinking agent. A contained amount of the isocyanate-based crosslinking agent is 5-40 parts by mass with respect to 100 parts by mass of the acrylic-based copolymer. The second layer (20) is in contact with the first laver (10).