Nippon Electric Glass Co., Ltd.

Koichi Mori

Hiroki Mori

Michiharu Eta

Kaoru Mitsugi

Yoshinori Hasegawa

Yasuo Teranishi

Akio Nakabayashi

Koji Nishijima

Hiroshi Naruse

Yasuhiro Matsumoto

Shuji Akiyama

Taisei Matsubushi

Naoya Ishida

Hiromichi Umemura

Yasuhiro Uemura

Takahide Nakamura

Shusaku Tamamura

Naohiro Ikai

Riku Yamashiro

Takaya Furuta

Naoyuki Matsumoto

Takuya Shioji

Toshitaka Nishijima

A position of a band-shaped glass film () conveyed downward in a vertical direction is detected by a detection unit (), and the conveyance speed of each of a plurality of conveyance devices (, and) provided in a horizontal conveyance path (R) is controlled based on detection data in the detection unit (). Under a condition that, of the plurality of conveyance devices (, and), the conveyance device () located on a most upstream side is defined as an upstream side conveyance device, and the conveyance devices (, and) on a downstream side of the upstream side conveyance device () are defined as downstream side conveyance devices, an upper limit and a lower limit are set to the conveyance speed of each of the downstream side conveyance devices (, and).

Method for manufacturing strip-shaped glass film

A glass roll of band-shaped glass film is free of skew and single slack when a roll-to-roll mode is used. The band-shaped glass film is wound into a roll shape and has creases formed thereon. The band-shaped glass film includes an effective section with two side edges in a width direction extending parallel to each other, and leading and trailing end portions extending parallel to the width direction. When a length from the leading end portion to the trailing end portion along a surface of the effective section is measured along each of a first position along one side edge and a second position along another side edge, a difference between the first and second measurement lengths is 400 ppm or less of a longer measurement length of the first and second measurement lengths.

Glass roll, glass roll manufacturing method, and quality evaluation method

A method of manufacturing a glass film includes a forming step of forming a band-shaped glass film by pulling down a glass ribbon flowing down from a forming trough while sandwiching the glass ribbon from both front and back sides through use of roller pairs and a conveyance direction changing step of changing a conveyance direction of the glass film from the vertical direction to the horizontal direction by conveying the glass film along a conveyance path having an arc shape while supporting the glass film from a back surface side with a roller conveyor so that a front surface of the glass film after having passed through the conveyance path faces upward. A first roller to be brought into abutment against the glass film from the front surface side is arranged between a roller pair arranged in a lowermost stage and the roller conveyor.

Method for producing glass film

A manufacturing method for a band-shaped glass includes a forming step, which forms a band-shaped glass, an annealing step, which performs an annealing treatment on the band-shaped glass, a cooling step, which cools the annealed band-shaped glass, a direction-changing step, which changes a feeding direction of the cooled band-shaped glass from a longitudinal direction to a horizontal direction, and a horizontal conveying step, which conveys the band-shaped glass in the horizontal direction while supporting the band-shaped glass at a horizontal conveyance part. In the horizontal conveying step, the band-shaped glass is conveyed in the horizontal direction while a first propulsion for driving the conveyance in the horizontal direction is provided at both sides in the width direction of the band-shaped glass by the horizontal conveyance part, the first propulsion being larger than a second propulsion provided at a center in the width direction of the band-shaped glass.

Method for manufacturing belt-shaped glass and device for manufacturing belt-shaped glass

Provided is a method of manufacturing a glass film, including: a conveying step of conveying an elongated glass film (G) along a longitudinal direction thereof; and a cutting step of irradiating the glass film (G) with a laser beam (L) from a laser irradiation apparatus () while conveying the glass film (G) through the conveying step, to thereby separate the glass film (G). The cutting step includes generating a thread-like peeled material (Ge) in a helical shape from an end portion of the separated glass film (G) in a width direction. The thread-like peeled material (Ge) has a width (W) of 180 &#x3bc;m or more and 300 &#x3bc;m or less. In addition, the thread-like peeled material (Ge) has a helical diameter (D) of 80 mm or more and 200 mm or less.

A manufacturing method for a band-shaped glass film (GF) includes use of: a plurality of rollers () configured to change a direction of the falling band-shaped glass film (GF) to a horizontal direction; and a first horizontal-conveyance unit () configured to convey the band-shaped glass film (GF) in the horizontal direction after the changing of the direction of the band-shaped glass film (GF). After a lower end of the band-shaped glass film (GF) passes through a position between the plurality of rollers () being at a retreated position (P) and the first horizontal-conveyance unit (), the plurality of rollers () are moved from the retreated position (P) to a regular position (P) to apply a pressing force to the band-shaped glass film (GF), to thereby cut the band-shaped glass film (GF) along a width direction by bend-breaking.

Method and device for producing band-shaped glass film

Provided is method of producing a glass roll, the method including: a conveying step of conveying a glass film (G) along a longitudinal direction thereof; a cutting step of irradiating the glass film (G) with a laser beam (L) from a laser irradiation apparatus () while conveying the glass film (G) by the conveying step, to thereby separate the glass film (G) into a non-product portion (Gc) and a product portion (Gd); and a take-up step of taking up the product portion (Gd) into a roll shape, to thereby form a glass roll (R). The cutting step includes winding a thread-like peeled material (Ge) generated from an end portion of the product portion (Gd) in a width direction around a rod-shaped collecting member (), to thereby collect the thread-like peeled material (Ge).

Method for manufacturing glass roll

Provided is a glass film ribbon manufacturing device (), including: a transverse conveyance unit (), which is configured to convey a glass film ribbon (G) in a transverse direction; and a cleaving unit (), which is arranged on a conveyance path of the transverse conveyance unit (), and is configured to cleave the glass film ribbon (G) along a preset cleaving line extending in a longitudinal direction, the transverse conveyance unit () including a wrinkle-smoothing unit () configured to smooth a wrinkle generated in the glass film ribbon (G) before the glass film ribbon (G) is cleaved by the cleaving unit ().

Glass film ribbon manufacturing method and glass film ribbon manufacturing device

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

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

A manufacturing method for a glass roll includes drawing a glass film downward vertically from a forming device, converting a delivery direction of the glass film from a vertical direction to a horizontal direction, continuously delivering the glass film to a downstream side by a horizontal conveyance section, and rolling the glass film into a roll shape on a downstream side of the horizontal conveyance section. While the glass film is supported in surface contact by an endless belt serving as a support section, which is provided in the horizontal conveyance section, a rolling force equal to or less than a static friction force, which is generated by a self-weight of the glass film between the glass film and the endless belt, is imparted to the glass film.

Manufacturing method for a glass roll and manufacturing apparatus for a glass roll

A manufacturing method for a glass film includes a cleaving step of dividing a glass film having a band shape into a product glass portion and an unnecessary glass portion, and a collecting step of sequentially shattering the unnecessary glass portion, and collecting the shattered unnecessary glass portion. The cleaving step is followed by vibration regulating processing of regulating vibrations of the unnecessary glass portion in a thickness direction thereof, the vibration regulating processing being executed in at least one location in the longitudinal direction of the unnecessary glass portion, and the collecting step being executed on a downstream side of the at least one location of the vibration regulating processing.

Manufacturing method for a glass film

A glass-resin laminate comprises an elongate glass film having a thickness of 1 to 300 &#x3bc;m, and a peelable elongate resin film having a thickness of 1 to 300 &#x3bc;m and a tensile modulus of elasticity of 0.3 Gpa or more. The elongate resin film is laminated on at least one surface of the elongate glass film so that the elongate resin film protrudes from edges on both sides in a lateral direction of the elongate glass film.

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Shiga, Japan

Koichi Mori