ADHESIVE SHEET AND METHOD FOR MANUFACTURING STRUCTURE
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United States of America Patent
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Issued Date -
May 16, 2024
app pub date -
Oct 25, 2021
filing date -
Mar 24, 2021
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Abstract
A pressure sensitive adhesive sheet for bonding two rigid plates together, at least one of the two rigid plates having irregularities on a surface on a side to be bonded to the other rigid plate, the pressure sensitive adhesive sheet containing: a composite pressure sensitive adhesive layer containing an optically functional pressure sensitive adhesive layer and a transparent pressure sensitive adhesive layer that does not have an optical function of the optically functional pressure sensitive adhesive layer; and a release sheet laminated on the transparent pressure sensitive adhesive layer in the composite pressure sensitive adhesive layer, the composite pressure sensitive adhesive layer having a straightforward transmittance of 90% or less for light rays having a wavelength of 550 nm. According to such a pressure sensitive adhesive sheet, uneven optical function in the pressure sensitive adhesive layers can be suppressed.
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