Hauptman Ham, LLP
Method of producing roll of laminate strip with polarizing film
A method of producing a roll of an optical film laminate strip including a polarizing film includes the steps of: forming a continuous web of optical film laminate including a polarizing film which consists of a polyvinyl alcohol type resin layer and has a thickness of 10 μm or less, wherein the polarizing film is formed by performing an stretching sub-step of subjecting a laminate comprising a continuous web of thermoplastic resin substrate and a polyvinyl alcohol type resin layer formed on the substrate, to a uniaxial stretching in a lengthwise direction of the laminate based on 2-stage stretching consisting of preliminary in-air stretching and in-boric-acid-solution stretching; cutting the continuous web of optical film laminate along a direction parallel to the length direction to form at least one continuous web of laminate strip having a given width; and winding the continuous web of laminate strip having the given width into a roll.
NITTO DENKO CORPORATION
B G G B
B32B G02B G02B B32B
inventional inventional inventional additional
Minoru Shusaku Takeharu Takashi Takuya Tomohiro
Miyatake Goto Kitagawa Kamijo Nakazono Mori