Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate
2007-08-07
2007-08-07
Chen, Vivian (Department: 1773)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
C156S235000, C156S238000, C156S239000, C156S240000, C156S247000, C156S297000, C156S299000, C156S302000, C156S327000
Reexamination Certificate
active
10838841
ABSTRACT:
The invention generally relates to polymer films used as protective cover sheets for polarizer plates, a method for producing polarizing plates, and a Liquid Crystal Display employing the same. More particularly, the invention relates to a cover sheet composite having a removable, carrier substrate and a cover sheet comprising a low birefringence polymer film and a layer that promotes adhesion to polyvinyl alcohol on the same side of the carrier substrate as the low birefringence polymer film. The guarded cover sheet of the invention is less susceptible to defects due to dirt and abrasion during the manufacture of the cover sheet and polarizer plates. In addition, the cover sheet has excellent adhesion to polyvinyl alcohol-containing dichroic films and eliminates the need to alkali treat the cover sheet prior to lamination to the dichroic films.
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Anderson Charles C.
Castle Richard A.
Chen Janglin
Hubert Timothy J.
Schunk Timothy C.
Chen Vivian
Eastman Kodak Company
Konkol Chris P.
Leipold Paul A.
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