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公开(公告)号：US20190085215A1
公开(公告)日：2019-03-21
申请号：US15762909
申请日：2016-09-27
Applicant: LINTEC CORPORATION
Inventor： Kazue UEMURA , Yusuke MATSUOKA , Takamasa KASE , Kiichiro KATO
Abstract: Provided is a pressure sensitive adhesive sheet including a resin layer on a substrate or a release material, at least a surface (α) of the resin layer on the side opposite to the side thereof on which the substrate or the release material is provided having pressure sensitive adhesiveness, wherein a concave portion and plural flat faces having an irregular shape exist in a region (Dc) surrounded by an arbitrarily predetermined circle on the surface (α) of the resin layer; and with respect to one or more flat faces (S) among the plural flat faces, the one or more flat faces (S) excluding flat faces having a cumulative relative frequency of 30% or less determined by adding the relative frequency from the respective flat faces with a smaller area, an rMAX value of the flat faces (S) calculated from specified operations is 0.60 or less
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公开(公告)号：US20180265749A1
公开(公告)日：2018-09-20
申请号：US15762907
申请日：2016-09-27
Applicant: LINTEC CORPORATION
Inventor： Kazue UEMURA , Kiichiro KATO , Yumiko AMINO , Koji TSUCHIBUCHI , Takamasa KASE , Yusuke MATSUOKA
Abstract: A pressure sensitive adhesive sheet including, on a substrate or a release material, a resin layer, at least a surface (α) of the resin layer on the opposite to the side on which the substrate or release material is provided having pressure sensitive adhesiveness, wherein a concave portion and a flat face exist on the surface (α) of the resin layer, and a width of the concave portion observed from the side of the surface (α) is non-uniform, and in a region (D) of 8 mm in length×10 mm in width as freely-selected on the surface (α), a concave portion having an area of 70 to 99.99% relative to 100% of a total area of the concave portions existing in the region (D) exists.
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