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公开(公告)号：US20220228039A1
公开(公告)日：2022-07-21
申请号：US17595774
申请日：2020-05-22
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Ikuse Nomoto , Haruyuki Mikami
Abstract: An adhesive sheet includes an adhesive layer having a fine structure on the surface. The fine structure includes a plurality of convex structures. The convex structures each have two or more parts. A first part located at the top portion of the convex structure is made from a non-adhesive or weak adhesive material. A second part located below the first part is made from a strong adhesive material. Given that a width of a bottom surface of the convex structure is a and a distance between bottom surfaces of adjacent convex structures is β in an arrangement direction of the convex structures, β/(α+β)
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