Nitto-denko Corporation

Nippon Electric Glass Co., Ltd.

Kota Nakai

Toshihiro Kanno

Takeshi Murashige

Junichi Inagaki

Kazuhito Hosokawa

Katsunori Takada

Yoshitsugu Kitamura

Keisuke Kimura

Naotaka Higuchi

Daisuke Ogomi

Masahiro Yaegashi

Yuki Nakano

Yuji Saiki

Shinobu Nagano

Eiko Suefusa

Hiroki Kuramoto

Atsushi Kishi

Satoshi Hirata

Youichirou Sugino

Hiroki Mori

Naoyuki Matsuo

Kaoru Mitsugi

Yoshinori Hasegawa

Naohiro Ikai

Yohei Kirihata

A method is disclosed for dividing a composite material in which a brittle material layer and a resin layer are laminated, including: a resin removing step of irradiating the resin layer with a laser beam oscillated from a first laser source along a scheduled dividing line of the composite material to form a processing groove along the scheduled dividing line; a brittle material removing step of irradiating the brittle material layer with a laser beam oscillated from an ultrashort pulsed laser source along the scheduled dividing line to form a processing mark along the scheduled dividing line; and a brittle material layer dividing step of generating thermal stress in the brittle material layer by irradiating the brittle material layer with a laser beam oscillated from a second laser source from the opposite side to the resin layer to thereby divide the brittle material layer.

Method for dividing composite material

Provided is a glass film-resin composite which makes it possible to obtain a long-length (e.g., 500 m or more-long) glass roll. The glass film-resin composite comprises a glass film, and a resin tape laminated to at least one surface of the glass film through an adhesive, wherein the width l (mm) of the resin tape satisfies the following formula (1). (where: a represents a reinforcement coefficient (mm*(μm)) which is 1.10 or more; Eg represents the Young's modulus (GPa) of the glass film; Ep represents the Young's modulus (GPa) of the resin tape; tg represents the thickness (μm) of the glass film; and tp represents the thickness (μm) of the resin tape.).

Glass film-resin composite

Provided is a method comprises: continuously forming an elongated, glass film having marginal portions from molten glass into a given shape having two marginal portions, in width-directional opposite edge regions thereof, wherein the glass film having marginal portions has the marginal portions, and an effective portion formed in a width-directional central region of the glass film having marginal portions; annealing the glass film having marginal portions; continuously forming resin tapes on the glass film having marginal portions at positions adjacent to and away by a given distance from the respective marginal portions, to extend in a length direction of the glass film having marginal portions; and continuously removing each of the marginal portions from the glass film having marginal portions, along a position between the marginal portion and a corresponding one of the resin tapes, or at a given width-directional position within the corresponding resin tape.

Manufacturing method for glass film with resin tape, and manufacturing method for glass film

Provided is a glass film-resin composite body which makes it possible to obtain a long-length (e.g., 500 m or more-long) glass roll. The glass roll with resin film comprises a glass film, and a resin film laminated to at least one surface of the glass film through an adhesive, wherein a creep amount a of the adhesive is 50 μm or less, as measured after applying a tensile shear load per unit area of the adhesive of 5 g/mm, to the resin film for 48 hours, in a state in which the glass film is fixed in 23° C. and 50% RH.

Glass roll with resin film

Provided is a glass film-resin composite which makes it possible to obtain a long-length (e.g., 500 m or more-long) glass roll. The glass film-resin composite comprises a glass film, and a resin tape laminated to at least one surface of the glass film through an adhesive, wherein the width(mm) of the resin tape satisfies the following formula (1). (where: a represents a reinforcement coefficient (mm*(&#x3bc;m)) which is 1.10 or more; Eg represents the Young's modulus (GPa) of the glass film; Ep represents the Young's modulus (GPa) of the resin tape; tg represents the thickness (&#x3bc;m) of the glass film; and tp represents the thickness (&#x3bc;m) of the resin tape.)

Provided is a production method for a film laminate by which a tough film can be bonded to a brittle film while the breakage of the brittle film is prevented. The production method for a film laminate of the present invention includes bonding a tough film having an elongated shape to a brittle film having an elongated shape while conveying the brittle film, wherein the method includes bonding the tough film and the brittle film to each other by bringing the tough film close to the brittle film, followed by blowing of a gas from a side of the tough film opposite to the brittle film.

Production method for film laminate

Provided is a glass film-resin composite, which prevents the breakage of a glass film and enables the production of an elongated glass film. The glass film-resin composite of the present invention includes: an elongated glass film; and a resin tape arranged on at least one surface of the elongated glass film, wherein the resin tape is linearly arranged at least near each of both ends in a widthwise direction of the elongated glass film in one surface of the elongated glass film, and wherein the resin tape includes an adhesive layer, and the adhesive layer is directly arranged on the elongated glass film.

A long polarizer that can achieve the multi-functionalization and high-functionalization of an electronic device, such as an image display apparatus, that shows no variation in quality when provided as a final product, and that is excellent in yield in its production. A polarizer according to an embodiment includes a long resin film containing a dichromatic substance, the polarizer having non-polarization portions arranged in a lengthwise direction and/or a widthwise direction at predetermined intervals, the non-polarization portions including decolored portions formed through partial decoloring.

Polarizer having non-polarization portions, a long polarizing plate and image display device comprising the polarizer

Provided is a glass film-resin composite body which makes it possible to obtain a long-length (e.g., 500 m or more-long) glass roll. The glass roll with resin film comprises a glass film, and a resin film laminated to at least one surface of the glass film through an adhesive, wherein a creep amount a of the adhesive is 50 &#x3bc;m or less, as measured after applying a tensile shear load per unit area of the adhesive of 5 g/mm, to the resin film for 48 hours, in a state in which the glass film is fixed in 23&#xb0; C. and 50% RH.

A polarizer that can realize the multi-functionalization and high-functionalization of an electronic device, such as an image display apparatus. A polarizer including a resin film containing a dichroic substance, wherein the polarizer has a low dichroic substance concentration portion whose content of the dichroic substance is relatively low in the resin film. In the polarizer, the low dichroic substance concentration portion has a content of an alkali metal and/or an alkaline earth metal of 3.6 wt % or less.

Polarizer, polarizing plate, and image display apparatus

A primary object of the present invention is to provide a polarizing plate excellent in durability. A polarizing plate () according to an embodiment of the present invention includes: a polarizer (); and a protective film (and) arranged on at least one side of the polarizer (). The polarizing plate () has a dimensional change ratio of &#x2212;0.2% or more in a transmission axis direction thereof when the polarizing plate () cut into a size measuring 100 mm by 100 mm is bonded to a glass plate with a pressure-sensitive adhesive and the following operation is repeated 100 times: the polarizing plate () bonded to the glass plate is left to stand under an atmosphere at &#x2212;40&#xb0; C. for 30 minutes and then left to stand under an atmosphere at 85&#xb0; C. for 30 minutes.

Polarizing plate

A long polarizer that can achieve the multi-functionalization and high-functionalization of an electronic device, such as an image display apparatus, that shows no variation in quality when provided as a final product, and that is excellent in yield in its production. A polarizer including a long resin film containing a dichromatic substance, the polarizer having non-polarization portions arranged in a lengthwise direction and/or a widthwise direction at predetermined intervals, the non-polarization portions including decolored portions formed through partial decoloring.

There is provided a polarizing plate excellent in durability. A polarizing plateaccording to one embodiment of the present invention includes a polarizer; and a pair of protective filmsrespectively arranged on both main surfaces of the polarizer, wherein the polarizing platehas a polarizer void portionformed by positioning of an end surfaceof the polarizerinward in a plane direction relative to each of end surfacesof the protective films

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Ibaraki, Japan

Kota Nakai