Adhesive sheet and method for producing adhesive sheet
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United States of America Patent
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Jun 9, 2020
Grant Date -
Sep 20, 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
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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