Nippon Electric Glass Co., Ltd.

Michiharu Eta

Takahide Fujii

Takayuki Noda

Takahide Nakamura

Yasuo Teranishi

Katsutoshi Fujiwara

Hiroki Mori

Tatsuya Takaya

Masahiro Tomamoto

Naotoshi Inayama

Yoshinori Hasegawa

Hidetaka Oda

Hiroshi Takimoto

Daisuke Nagata

Toru Sakurabayashi

Yasuo Yamazaki

Shinichi Ishibashi

Keiji Takagi

Mitsuharu Noda

Yasuhiko Ogiso

Koichi Mori

Kaoru Mitsugi

Yasuhiro Matsumoto

Setsuo Uchida

Sho Itoh

Yoshiharu Miwa

Hiromichi Umemura

Hiroaki Tanaka

Koji Nishijima

Hiroshi Naruse

Hiroyuki Uchida

Seiji Hamada

Takashi Fujino

Kenji Kamee

Teruaki Kugo

Yukihiro Nagamatsu

Mamoru Kubosaka

A glass roll includes a glass film formed by a downdraw method. The glass film is wound into a roll using a winding roller in a state in which front and back glass surfaces of the glass film formed in the forming operation are exposed, and during the winding operation, the glass film is superposed on a separable protective sheet. The protective sheet extends beyond both sides in a width direction of the glass film. The protective sheet can further be wound on an outer peripheral surface of the glass film by winding only the protective sheet from a trailing end of the glass film in a winding direction of the glass film.

Glass roll with a separable protective sheet

A roll-to-roll apparatus reliably reduces breakage of a glass film even in a case of sequentially performing predetermined processing on the glass film. Provided is a glass roll () formed by winding a glass film () into a roll, in which a resin film () is attached onto the glass film (), and at least a part of the resin film () is arranged on a front side of an unwinding direction relative to a leading end portion in the unwinding direction of the glass film ().

Glass roll and method of processing glass roll

Provided is a laminate () obtained by integrally laminating glass sheets () on both surfaces of a resin sheet (). The glass sheets () have a thickness of 300 &#x3bc;m or less and end surfaces () of the glass sheets () are chamfered.

Laminate, method for cutting laminate, method for processing laminate, and device and method for cutting brittle plate-like object

A method of manufacturing a glass roll, includes: a forming step (S) of forming, while conveying a glass film, the glass film by a downdraw method; a temporary rolling step (S) of rolling the glass film while superposing a protective film on the glass film at a downstream end of a path of the conveying in the forming step (S), to thereby manufacture a source glass roll; and a main rolling step (S) of unrolling, while conveying the glass film to a downstream side, the glass film from the source glass roll, and then rerolling the glass film while superposing a protective film on the glass film at a downstream end of a path of the conveying, to thereby manufacture a glass roll. Higher tension in a rolling direction is applied to the glass film in the main rolling step (S) than in the temporary rolling step (S).

Method of manufacturing a glass roll

A glass roll reliably prevents a glass film from breaking from an end surface of the glass film as an origin of breakage. The glass roll is formed by winding the glass film into a roll while superposing the glass film on a protective sheet. The glass film is formed by an overflow downdraw method to have a thickness of 1 &#x3bc;m or more and 200 &#x3bc;m or less, and has each end surface in a width direction formed as a cut surface cut by laser splitting.

Glass roll, device for producing glass roll, and process for producing glass roll

A glass film laminate () for a touch panel includes a glass film (), a glass film (), a glass film (), and transparent adhesive layers (). The glass films (), () form both outermost layers. The glass film () has a transparent conductive layer () formed on each of both surfaces thereof. The glass films (), (), () each have a thickness of 200 &#x3bc;m or less. The glass film laminate () for a touch panel itself assumes a curved state without the application of an external force, in which a curved concave surface () and a curved convex surface () are formed. The curved concave surface () has formed therein a compressive stress, and the curved convex surface () has formed therein a tensile stress.

Glass film laminate for touch panel, touch panel, and method of manufacturing glass film laminate for touch panel

Provided is a cleaving method for a glass film (G) including: cleaving, during conveyance of the glass film (G) in a predetermined direction, the glass film (G) continuously along a preset cleaving line () extending in a predetermined conveying direction (a) by a thermal stress generated through localized heating performed along the preset cleaving line () and through cooling of a locally heated region (H); dividing the glass film (G) in a width direction of the glass film (G); diverting, after the dividing, adjacent divided glass films (), which are obtained by the dividing, so that the adjacent divided glass films () are separated in a front and rear direction of the adjacent divided glass films; and forming a predetermined widthwise clearance between the adjacent divided glass films after the dividing of the glass film (G) and before the diverting of the adjacent divided glass films ().

Cleaving method for a glass film

Provided is a cutting method for a glass sheet, comprising radiating a laser beam to a cutting portion (C) of a glass sheet (G) having a thickness of 500 &#x3bc;m or less to fuse the glass sheet (G), wherein a narrowest gap between fused end surfaces (Gaand Gb) of the glass sheet (G), which face each other in the cutting portion (C), is managed to satisfy a relationship of 0.1&#x2266;b/a&#x2266;2, where 'a' is a thickness of the glass sheet (G) and 'b' is the narrowest gap.

Cutting method for glass sheet and glass sheet cutting apparatus

A method of cleaving and separating a glass sheet includes a cleaving step of cleaving a glass sheet along preset cleaving lines by a laser cleaving method, and a separation step of separating adjacent pieces of the cleaved glass sheet from each other. The cleaving step is performed under a state in which the glass sheet is placed on support members provided respectively in segment regions, which are segmented by the preset cleaving lines. The separation step is performed by separating the support members from each other in adjacent segment regions.

Method of cleaving and separating a glass sheet and apparatus for cleaving and separating a glass sheet

A glass sheet cutting device fuses and divides a glass substrate using a preset cutting line as a boundary while supplying an assist gas and a laser beam from above the glass substrate along the preset cutting line of the glass substrate. The glass sheet cutting device includes a first laser irradiator for radiating a fusing laser beam and a second laser irradiator for radiating an annealing laser beam. Through a fusing gap formed between fused end surfaces by fusing, the second laser irradiator radiates the annealing laser beam obliquely from above onto the fused end surface to be annealed.

Glass sheet cutting method

Provided is a method of cleaving and separating a glass sheet (G), the method comprising: a cleaving step of cleaving the glass sheet (G) along preset cleaving lines (X, Y) by a laser cleaving method; and a separation step of separating adjacent pieces of the cleaved glass sheet (G) from each other, wherein the cleaving step is performed under a state in which the glass sheet (G) is placed on a sheet (S) having stretchability, and the separation step is performed by stretching the sheet (S).

Method of cleaving and separating a glass sheet

Provided is a manufacturing device () of a glass film, the device including: a forming apparatus () of a glass film ribbon (G) for forming molten glass or a glass base material for secondary processing into a glass film ribbon (G); a winding apparatus () for winding, into a roll shape, the glass film ribbon (G), which is drawn downward while being cooled; and a width direction cutting apparatus () for cutting the glass film ribbon (G) along its width direction at a position before being wound by the winding apparatus (). A vertical distance (h) from the glass film ribbon (G) forming start position by the forming apparatus () to a glass film ribbon (G) cutting position by the width direction cutting apparatus () is set as five times or more of a dimension in the width direction of the glass film ribbon (G).

Process for manufacturing of glass film and manufacturing device thereof

Growing community of inventors

Shiga, Japan

Michiharu Eta