Adhesive sheet, and adhesive sheet production method
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United States of America Patent
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Jul 6, 2021
Grant Date -
Oct 4, 2018
app pub date -
Sep 27, 2016
filing date -
Sep 28, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
Provided a pressure sensitive adhesive sheet including a substrate or a release material having thereon a resin layer that contains a resin part (X) containing a carbon atom-containing resin having a carbon atom in a main chain of a constitutional unit as a main component, and a particle part (Y) consisting of fine particles containing silica particles, a surface (α) having pressure sensitive adhesiveness, the surface (α) having a concave portion and a flat face existing thereon, a prescribed section (P1) having existing on the side of the surface (α) a concave portion having a prescribed maximum height difference, and a flat portion corresponding to a cut portion of the flat face existing in a region (P) and being substantially in parallel to a surface of the substrate or the release material in contact with the resin layer, and an absolute value of a ratio of an intensity ratio of a peak intensity derived from silicon atoms and a peak intensity derived from carbon atoms measured by EDX a for a prescribed region (S) that is positioned under one of the concave portion existing on the cross section, and the intensity ratio measured by EDX for a prescribed region (T) that is positioned under one of the flat portion existing on the cross section being 0.2 or less.
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