Method for producing material roll

Details Method for producing material roll Method for producing material roll

2010-04-29

2011-11-08

Gray, Linda L (Department: 1745)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

C156S271000, C156S192000, C242S525000, C445S024000, C359S900000

Reexamination Certificate

active

08052827

ABSTRACT:
The invention is directed to a method for producing a material roll for use in a process including unwinding a long sheet material from a roll of the long sheet material, wherein the long sheet material includes an optical film, a pressure-sensitive adhesive layer and a release film laminated in this order, and the optical film includes a polarizing plate, cutting at least the optical film to form an optical film having a specific length, and then bonding the optical film to a surface of a rectangular optical display unit, while feeding the optical film, the method comprising the steps of: lengthwise slitting a long material having a longitudinal direction parallel to an absorption axis of the polarizing plate, so that a long sheet material having a width corresponding to a short or long side of the optical display unit is obtained; and winding the long sheet material into a roll.

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