POLARIZER PLATE AND METHOD FOR MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a polarizer plate made by stacking a protective film on a polyvinyl alcohol based polarizer film via an adhesive layer and improved in the adhesion between the polarizer film and the protective film and in warm water-proof nature by improving the adhesive layer.

SOLUTION: The protective film is stacked at least on one of the surfaces of a polyvinyl alcohol based polarizer film via a polyvinyl alcohol (PVA) based adhesive layer. This adhesive layer contains an acetoacetyl group modified PVA based resin and glyoxylic acid salt expressed in formula (I). The polarizer plate is made from an adhesive composition consisting of an aqueous solution in the range of pH 4-10 containing an acetoacetyl group modified PVA based resin at a rate of 1-8 pts.wt. to 100 pts.wt. of water and the acetoacetyl group modified PVA based resin and glyoxylic acid salt at a rate of 1 to 0.03-0.25 in solid content weight. In the formula (I), M represents an alkali metal or alkaline earth metal, and n represents 1 or 2.

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