Nitto-denko Corporation

Yu Morimoto

Kazuo Kitada

Takaaki Ishii

Yusuke Toyama

Satoshi Hashimoto

Akihiro Nagura

Tatsumi Amano

Kousuke Yonezaki

Kazuma Mitsui

Kyoko Takashima

A method for continuously manufacturing an optical display device comprises feeding a continuous web of optical film laminate including a continuous web of releasable film that includes a conductive layer and an optical film sheet that includes a conductive layer formed on the releasable film, bending the releasable film at a peeling body located in close vicinity of a lamination position, collecting the releasable film and thereby peeling the optical film sheet from the optical film laminate, sending the optical film sheet to the lamination position, and laminating the optical film sheet with a panel member which is conveyed to the lamination position by a panel conveying channel which makes at least a double-storied structure with a portion of a collecting channel where the releasable film is collected, attenuating static electrification generated on the optical film sheet, and continuously laminating the optical film sheet with the panel member.

Optical film laminate used for continuous lamination to panel component

A continuous web of optical film laminate comprising, an optical film comprising a first substrate and an adhesive layer on the first substrate, a releasable film comprising a second substrate and a releasably treated layer on the second substrate, the releasably treated layer being in contact with the adhesive layer, a first conductive layer between the first substrate and the adhesive layer, and a second conductive layer between the second substrate and the releasably treated layer. The first conductive layer and the second conductive layer comprise a static electrification prevention material, such that the optical film with the first conductive layer, and the releasable film with the second conductive layer, both have a sheet resistance of 10&#x3a9;/sq or less.

To provide a continuous web of optical film laminate provided with static electrification prevention function which allows for promptly attenuating static charge of optical film sheet and carrier film electrified by peeling action in RTP lamination method and apparatus. The problem has been solved with a continuous web of optical film laminate for using in RTP lamination method and apparatus, in which static electrification prevention function is provided to optical film sheets and a carrier film configuring the continuous web of optical film laminate, such that sheet resistance of each of the optical film sheets and the carrier film is 10&#x3a9;/sq or less so as to promptly attenuate static charge of the carrier film to be collected, which is statically electrified by peeling action, and the optical film sheets to be laminated to panel components, which are also statically electrified by peeling action.

An aim of the prevention invention is to provide a water dispersion type acryl-based pressure-sensitive adhesive composition for re-peeling, which can prevent electrification of an adherend at the time of peeling (peeling antistatic properties) and which can form a pressure-sensitive adhesive layer excellent in adherability and re-peelable properties, and also to provide a pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer formed of the pressure-sensitive adhesive composition. The re-peelable water dispersion type acryl-based pressure-sensitive adhesive composition of the present invention contains an acrylic emulsion-based polymer composed of a (meth)acrylic acid alkyl ester and a carboxyl-containing unsaturated monomer as raw material monomers, a perfluoroalkyl-containing oligomer, and an ionic compound.

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Ibaraki, Japan

Yu Morimoto