JP2019167270A - Method for manufacturing glass structure piece - Google Patents

Abstract

To provide a method for manufacturing a glass structure body piece with high efficiency and high accuracy, capable of cutting a glass structure body to obtain a glass structure body piece.SOLUTION: A method for manufacturing a glass structure body piece, capable of cutting a glass structure body including thin glass to manufacture a glass structure body piece comprises: the step A of forming a cutting preliminary line for defining a cutting scheduled part having corner portions on the thin glass; the step B of laminating the glass structure body and a carrier film to form a laminate b; and the step C of cutting the thin glass by conveying the laminate b while bending the laminate in the thickness direction along a conveyance roll to obtain a glass structure body piece. The step C includes at first entering a corner portion a being one of the corner portions of the cutting scheduled part into the conveyance roll in each cutting scheduled part so that a plan view angle between each of two sides connected in the corner portion a and the axial direction of the conveyance roll is 5° or more.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for manufacturing a glass structure piece. More specifically, the present invention relates to a method for manufacturing a glass structure piece by cleaving a glass structure including thin glass.

  In recent years, lighter and thinner displays, lighting devices, and solar cells have been developed from the viewpoints of transportability, storage, design, and the like. In addition, film-like members used in these apparatuses are also continuously produced by a roll-to-roll process. For example, the use of thin glass has been proposed as a flexible material that can be processed or processed by a roll-to-roll process (for example, Patent Documents 1 and 2). The thin glass is used by laminating a resin film for protecting the thin glass, or may be used by laminating with an optical film (for example, a polarizer) to add a predetermined function.

  A member (glass structure piece) containing thin glass is usually produced by obtaining a production intermediate (glass structure) with a large area and then cutting it into a predetermined size. When cutting out a glass structure piece from the glass structure, it is required to obtain the glass structure piece with high accuracy without defects such as cracks and scratches on the end face. It is difficult to satisfy such a demand and efficiently manufacture the structure piece.

Japanese National Publication No. 1-500990 JP-A-8-283041

  The present invention has been made to solve the above-described conventional problems, and an object of the present invention is a method of cleaving a glass structure to obtain a glass structure piece, which is highly efficient and highly accurate. A method of manufacturing a structure piece.

The method for producing a glass structure piece of the present invention is a method for producing a glass structure piece by cleaving a glass structure provided with thin glass, and the thin glass has at least one corner portion. A step (A) of forming a preliminary wire for cleaving that defines a portion to be cleaved, a step (B) of laminating the glass structure and a carrier film to form a laminate b, and the laminate b. (C) including the step (C) of cleaving the thin glass along the cleaving preliminary line to obtain a glass structure piece by being conveyed along the thickness direction along the conveyance roll. In this case, when the portion to be cut is placed along the transport roll, the corner portion a, which is one of the corner portions of each portion to be cut, is connected to each of the two sides joined by the corner portion a and the shaft of the transport roll. So that the viewing angle with the direction is 5 ° or more And, including the be first to enter the conveying roll in each of the expected splitting portion.
In one embodiment, the glass structure is composed of a single thin glass.
In one embodiment, the glass structure is composed of thin glass and a layer formed of a material other than thin glass.
In one embodiment, the layer formed from materials other than the thin glass is a resin layer.
In one embodiment, the thickness of the said thin glass is 10 micrometers-250 micrometers.
In one embodiment, the angle formed by the two sides connected by the corner portion a is 60 ° to 120 °.
In one embodiment, the shape of the said parting plan part is a rectangular shape.
In one embodiment, the manufacturing method of the present invention includes setting the pressure applied to the glass structure and the carrier film to 1000 N / m or less when the carrier film is laminated on the glass structure.
In one embodiment, the manufacturing method of the present invention includes laminating the carrier film and the glass structure by blowing air.
In one embodiment, the planar view angle formed by each of the two sides joined at the corner portion a and the axial direction of the transport roll 30 is 30 ° to 60 °.
In one embodiment, the manufacturing method of the present invention includes disposing the transport roll so that the axial direction of the transport roll and the transport direction of the laminate b are not orthogonal to each other.
In one embodiment, the angle formed by the axial direction of the transport roll and the transport direction of the laminate b is 30 ° to 60 °.

  ADVANTAGE OF THE INVENTION According to this invention, it is a method of cleaving a glass structure and obtaining a glass structure piece, Comprising: The method of manufacturing a glass structure piece with high efficiency and high precision can be provided.

It is the schematic explaining the manufacturing method of the glass structure piece by one Embodiment of this invention. It is a schematic plan view which shows the shape of the part to be cleaved in the manufacturing method of the glass structure piece by one Embodiment of this invention. It is the schematic explaining the process (C) in one embodiment of this invention.

A. Outline of Manufacturing Method of Glass Structure Piece A method for manufacturing a glass structure piece of the present invention is a method of cleaving a glass structure provided with thin glass to manufacture a glass structure piece. In the present specification, “glass structure” and “glass structure piece” include thin glass alone (including a laminate of thin glass) and a layer formed of a material other than thin glass and thin glass. It is a concept including the laminated body comprised. The “layer formed from a material other than thin glass” is typically a resin layer.

  FIG. 1 is a schematic view illustrating a method for manufacturing a glass structure piece according to one embodiment of the present invention. The method for producing a glass structure piece of the present invention includes a preliminary cutting wire 12 for defining a planned cutting portion 11 having at least one corner portion in a thin glass 10 (for example, a preliminary cutting wire by scribing, a fine hole). (A) for forming a preliminary cutting line constituted by arranging the cut lines in a perforated manner, and a preliminary cutting line constituted by arranging the interrupted lines in a perforated form, the glass structure 100, and the carrier The step (B) of laminating the film 20 to form the laminated body b, and conveying the laminated body b while bending it in the thickness direction along the conveying roll 30, thereby cutting the thin glass 10. A step (C) of cutting along the spare line 12 to obtain the glass structure piece 110.

  In the step (C), when the cleaving portion is set along the conveying roll 30, the corner portion a which is one of the corner portions of each cleaving portion 11 is connected to each of the two sides joined by the corner portion a and the conveying roll. The plan view angle with respect to the axial direction of 30 is set to 5 ° or more, and first enters the transport roll in each cleaving scheduled portion 11. In other words, the manufacturing method of the glass structure piece of the present invention includes cleaving the glass structure 100 by bending stress, and at the same time, the bending stress is simultaneously applied to the two sides of the cleaving portion 11 during the cleaving. Including acting. In the present invention, the glass structure 100 can be cleaved with high accuracy by simultaneously applying a bending force to the two sides of the cleaved portion 11 using the transport roll 30. Moreover, if the elongate glass structure 100 is used for the manufacturing method of this invention, it will become possible to cleave the glass structure 100 continuously and the glass structure piece 110 can be obtained efficiently.

B. Glass Structure The shape of the thin glass contained in the glass structure is typically a plate shape. Examples of the thin glass include soda-lime glass, borate glass, aluminosilicate glass, and quartz glass according to the classification according to the composition. Moreover, according to the classification | category by an alkali component, an alkali free glass and a low alkali glass are mentioned. The content of alkali metal components (for example, Na ₂ O, K ₂ O, Li ₂ O) in the thin glass is preferably 15% by weight or less, and more preferably 10% by weight or less.

  Arbitrary appropriate methods may be employ | adopted for the shaping | molding method of the said thin glass. Typically, the above thin glass is a mixture of a main raw material such as silica or alumina, an antifoaming agent such as sodium nitrate or antimony oxide, and a reducing agent such as carbon at a temperature of 1400 ° C to 1600 ° C. Then, after forming into a thin plate shape, it is produced by cooling. Examples of the thin glass forming method include a slot down draw method, a fusion method, and a float method. The thin glass formed into a plate shape by these methods may be chemically polished with a solvent such as hydrofluoric acid, if necessary, in order to reduce the thickness or improve the smoothness.

  The thickness of the thin glass is preferably 10 μm to 250 μm, more preferably 20 μm to 200 μm, still more preferably 30 μm to 200 μm, and particularly preferably 30 μm to 100 μm.

  In one embodiment, the glass structure includes a thin glass and a resin layer disposed on at least one side of the thin glass. Any appropriate material is used as the material constituting the resin layer. Examples of the material constituting the resin film include polyvinyl alcohol (PVA) resin, polyolefin resin, cyclic olefin resin, polycarbonate resin, cellulose resin, polyester resin, polyamide resin, polyimide resin, and polyresin. Ether resins, polystyrene resins, (meth) acrylic resins, (meth) acrylic urethane resins, polysulfone resins, acetate resins, epoxy resins, silicone resins, polyarylate resins, polysulfone resins, polyethers Examples include imide resins, epoxy resins, urethane resins, and silicone resins. The resin layer may be disposed directly on the thin glass, or may be laminated on the thin glass via any appropriate pressure-sensitive adhesive or adhesive.

  In one embodiment, the resin film has a transparent conductive layer. The resin film with a transparent conductive layer is configured by disposing a transparent conductive layer on a resin film. Examples of the transparent conductive layer include a metal oxide layer, a metal layer, a layer containing a conductive polymer, a layer containing metal nanowires, a layer composed of a metal mesh, and the like.

  In one embodiment, an optical film is used as the resin layer. Examples of the optical film include a polarizing plate (an optical film having a polarizing function), a phase difference plate, an isotropic film, and the like.

  The length of the glass structure is, for example, 200 m to 3000 m. Moreover, the width | variety of a glass structure is 200 mm-2000 mm, for example.

C. Step (A)
As described above, in the step (A), a preliminary cutting line is formed on the thin glass. The cleaving spare line is a line that defines a cleaving scheduled portion. In the post-process (C), cleaving is performed along the preliminary cutting line, and a glass structure piece corresponding to the shape of the planned cutting part is obtained.

  FIG. 2 is a schematic plan view showing the shape of a cleaved portion in the method for manufacturing a glass structure piece according to one embodiment of the present invention. In FIG. 2, a rectangular cutting scheduled portion 11 is defined by the cutting spare line 12. 2 is configured by arranging fine holes in a perforated shape. The cleaving spare line configured by arranging fine holes in a perforated manner means a cleaving spare line formed by providing fine through holes continuously or intermittently in a thin glass. The diameter of the fine hole is, for example, 0.1 μm to 10 μm, preferably 0.1 μm to 5 μm. The space | interval of a fine hole is 0.1 micrometer-10 micrometers, for example, Preferably they are 0.1 micrometer-5 micrometers. Within such a range, the glass structure can be cleaved with higher accuracy. The microhole can be provided by any appropriate method. For example, any suitable laser light can be used. As the laser light, for example, an ultrashort pulse laser can be used.

  The form of the cleaving spare line is not limited to the illustrated example, and any appropriate form can be adopted as long as the effect of the present invention is obtained. Other examples of the splitting spare line include a splitting spare line by scribing, a splitting spare line configured by arranging the interrupting lines in a perforation. The cleaving spare line by scribing means a cleaving spare line composed of scratches formed so as not to penetrate the thin glass. The scribing preliminary line by scribing can be formed using, for example, a scriber provided with super steel alloy particles or diamond particles, any appropriate laser beam, any appropriate blade, and the like. The breaking spare line configured by arranging the interrupting lines in a perforated manner means a breaking spare line formed by intermittently providing a predetermined length of a line penetrating the thin glass. The length of the line passing through the thin glass is, for example, 0.1 mm to 30 mm. Moreover, the space | interval of the line which penetrates thin glass is 0.1 mm-10 mm, for example. The line through the thin glass can be provided by any suitable method. For example, any suitable laser light can be used.

When the glass structure is composed of thin glass and a layer composed of a material other than thin glass, the layer composed of a material other than thin glass is cut at a position / shape corresponding to the planned cutting portion. Preferably it is. When the glass structure includes thin glass and a resin layer disposed on one side of the thin glass, as a method of cutting the resin layer, for example, laser light (for example, laser light by a CO ₂ laser) is used. The method of using, the method of using a blade, etc. are mentioned.

  As described above, the cleaving planned portion 11 has at least one corner portion. The corner portion may be a connecting point (that is, a corner) of two sides, or may be configured by a curve. Preferably, in the step (C), the corner portion (corner portion a) that first enters the transport roll in each cleaving portion 11 is a joining point of two sides. If the corner portion a is a joining point (that is, a corner) of two sides, the glass structure can be cleaved with higher accuracy. When the corner part a is comprised with a curve, it is preferable that the curvature radius of the said curve is 1 mm-10 mm, and it is more preferable that it is 2 mm-5 mm. Further, the length of the curve is preferably 20 mm or less, and more preferably 3 mm to 8 mm.

  The angle formed by the two sides 12a and 12b connected at the corner portion a is preferably 30 ° to 170 °, more preferably 45 ° to 150 °, and further preferably 60 ° to 120 °, Preferably they are 75 degrees-105 degrees, Most preferably, they are 80 degrees-100 degrees.

  As long as it has at least 1 or more corner parts, the cutting part can be any suitable shape. The part to be cleaved has a closed shape. Examples of the shape of the part to be cleaved include a triangle, a quadrangle (rectangle, square, rhombus, parallelogram), a pentagon or more polygon. Moreover, the shape which includes a curve in part may be sufficient as the part to be cleaved. In one embodiment, the shape of the said parting plan part is a quadrangle (preferably a rectangle). In one embodiment, the part to be cleaved has a line-symmetric shape, and more preferably has a line-symmetric shape in which the axis of symmetry passes through the corner part a. By forming the planned cutting part having such a shape, it is possible to apply a bending force equally to the left and right with respect to the planned cutting part, and to prevent generation of unnecessary cracks and the like. Examples of the line-symmetric shape include isosceles triangles, equilateral triangles, squares, rhombuses, and the like, and preferably a square.

The area of the cleaved portion can be any appropriate area depending on the size of the desired glass structure piece. The area of the planned cutting part, for ^example, a 1cm ² ~2500cm 2, preferably ^{4cm 2 ~900cm} 2, more preferably ^9cm 2 100 cm ^2.

D. Process (B)
As described above, in the step (B), the glass structure 100 and the carrier film 20 are laminated to form the laminate b. The carrier film 20 is used to convey the plurality of glass structure pieces 110 obtained in the step (C). The carrier film 20 may have a pressure-sensitive adhesive layer containing any appropriate pressure-sensitive adhesive. In one embodiment, the carrier film 20 is detachably laminated on the glass structure via the pressure-sensitive adhesive layer.

  In one embodiment, the carrier film 20 is laminated on one surface of the glass structure 100 while the glass structure 100 is rolled. It is preferable to continuously laminate the carrier film 20 on the long glass structure 100 using the long carrier film 20.

  In one embodiment, when using a carrier film with a pressure-sensitive adhesive layer, a long carrier film is fed out, and a pressure-sensitive adhesive is formed on the carrier film to form a pressure-sensitive adhesive. Without winding up, the carrier film with the adhesive layer and the glass structure are laminated as they are. Any appropriate method can be adopted as a method for applying the adhesive. Moreover, the carrier film with an adhesive layer produced separately may be prepared and a long-shaped carrier film with an adhesive layer and a glass structure may be laminated | stacked.

  When laminating the carrier film on the glass structure, the pressure (laminate pressure) applied to the glass structure and the carrier film is preferably 1000 N / m or less. If it is such a range, the unnecessary crack of a thin glass which a glass structure has, a crack, etc. can be prevented.

  In one embodiment, the carrier film and the glass structure are laminated using a nip roll. In such a form, the lamination pressure at the time of lamination is preferably 10 N / m to 1000 N / m, more preferably 10 N / m to 500 N / m.

  Preferably, an elastic roll is used as the nip roll. Examples of the material constituting the elastic roll include rubber, sponge made of urethane resin, and the like. The nip roll has Asker C hardness (hardness according to the spring-type Asker C type specified in SRIS 0101 standard) of 1 to 70, preferably 10 to 50, more preferably 15 to 40, and still more preferably 20 to 35. If it is such a range, the unnecessary crack of a thin glass which a glass structure has, a crack, etc. can be prevented. The diameter of the nip roll is not particularly limited, and is, for example, 25 mm to 300 mm. The width of the nip roll is not particularly limited, and can be appropriately set according to the width of the glass structure to be conveyed.

  In another embodiment, the lamination of the carrier film and the glass structure is performed by air blowing. In such a configuration, the pressure on the glass structure is substantially zero. Air blowing is performed when the carrier film and the glass structure are sufficiently close to each other. Air may be blown before the carrier film and the glass structure are in contact, or air may be blown after the carrier film and the glass structure are in contact. The blowing of air can be performed using any suitable air injection device.

  Any appropriate resin can be used as a material for forming the carrier film. Examples of the material for forming the carrier film include ester resins such as polyethylene terephthalate resins, cycloolefin resins such as norbornene resins, olefin resins such as polyethylene and polypropylene, polyamide resins, and polycarbonate resins. Heavy resin etc. are mentioned. Preferred are ester resins (particularly polyethylene terephthalate resins) and polyolefin resins (particularly polyethylene resins).

  The thickness of the carrier film is preferably 3 μm to 250 μm, more preferably 5 μm to 250 μm, and still more preferably 20 μm to 150 μm.

  The adhesive strength of the carrier film to glass is preferably 0.01 N / 25 mm to 0.5 N / 25 mm, more preferably 0.03 N / 25 mm to 0.2 N / 25 mm, and still more preferably 0.05 N / It is 25 mm to 0.1 N / 25 mm. If a carrier film having such an adhesive force is used, the carrier film can be easily peeled off when there is no hindrance to the conveyance of the glass structure piece and the carrier film becomes unnecessary. In addition, adhesive force is measured by the method according to JISZ0237: 2000 (tensile speed 300mm / min, peeling angle 180 degrees, measurement temperature: 23 degreeC).

  The elastic modulus at 23 ° C. of the carrier film is preferably 2 GPa to 6 GPa, more preferably 3 GPa to 5 GPa, and further preferably 4 GPa to 5 GPa. If a carrier film having such an elastic modulus is used, it is possible to prevent a large load from being applied to the work (glass structure, glass structure piece) passing through the transport roll. The elastic modulus can be measured according to JIS K7127.

E. Process (C)
FIG. 3 is a schematic view illustrating step (C) in one embodiment of the present invention. As described above, in the step (C), the laminate (laminated body b) of the carrier film and the glass structure formed in the step (B) is conveyed along the conveyance roll while being bent in the thickness direction. Thus, the thin glass is cleaved along the cleaving spare line to obtain a glass structure piece. FIG. 3 is a view of the laminated body b passing through the transport roll 30 as viewed from above.

  As described above, in the step (C), when the part to be cut is placed along the transport roll 30, one of the corner parts (corner part a) of the part to be cut is joined by the two sides 12a at the corner part a, First, it is made to enter into this conveyance roll so that the planar view angle of each 12b and the axial direction of the conveyance roll 30 may be 5 degrees or more.

  Plane viewing angles x and y formed by the two sides 12a and 12b joined at the corner portion a and the axial direction of the transport roll 30 are preferably 5 ° to 75 °, more preferably 15 ° to 67.5. °, more preferably 30 ° to 60 °, particularly preferably 37.5 ° to 52.5 °, and most preferably 40 ° to 50 °. Plane viewing angles x and y mean an angle that is an acute angle among angles formed by the two sides joined at the corner portion a and the axial direction of the transport roll.

  The planar view angle x between one side 12a of the two sides joined at the corner part a and the axial direction of the transport roll 30, and the other side 12b of the two sides joined at the corner part a and the transport roll The ratio (x / y) to the planar viewing angle y with respect to the axial direction of 30 is preferably 0.6 to 1.6, more preferably 0.8 to 1.25, and still more preferably 0.8. 9 to 1.1. If the planar view angle x and the planar view angle y are close, the glass structure can be cleaved with higher accuracy.

  In one embodiment, as shown to Fig.3 (a), the conveyance roll 30 used for cleaving is arrange | positioned so that the axial direction may be substantially orthogonal to the conveyance direction of the laminated body b.

  In another embodiment, as shown in FIG.3 (b), the conveyance roll 30 used for cleaving is arrange | positioned so that the axial direction and the conveyance direction X of the laminated body b may not be orthogonally crossed. In this embodiment, the angle z (acute angle side) formed by the axial direction of the transport roll 30 and the transport direction X of the laminated body b is preferably 10 ° to 80 °, more preferably 20 ° to 70. °, more preferably 30 ° to 60 °, and particularly preferably 40 ° to 50 °. The angle z can be appropriately set depending on how the planned cutting portion is formed.

  In an embodiment in which the axial direction of the transport roll and the transport direction X of the stacked body b are not orthogonal to each other, when one of the sides connected to the corner portion a of the planned cutting portion is substantially orthogonal to the transport direction X of the stacked body b, It can be preferably adopted. For example, the glass structure includes an optical film (for example, a polarizer) having an optical axis, and the optical axis is orthogonal to the longitudinal direction of the optical film and / or parallel to the longitudinal direction of the optical film. As described above, even when the glass structure piece is formed, it is required that an optical axis in a specific direction exists in the glass structure piece. A body piece can be obtained. In this embodiment, when the planned cutting portion is rectangular, an angle z (acute angle side) formed by the axial direction of the transport roll 30 used for cleaving and the transport direction X of the laminate b is preferably 20 ° to. 70 °, more preferably 25 ° to 65 °, still more preferably 30 ° to 60 °, particularly preferably 40 ° to 50 °, and most preferably 43 ° to 47 °.

  Arbitrary appropriate conveyance rolls may be used as a conveyance roll used for cleaving. For example, a hard chrome plated transport roll, a resin transport roll, or the like is used. Moreover, a conveyance roll is the concept containing an air turn bar. The cleaving may be performed using an air turn bar as the transport roll without bringing the transport roll and the laminate b into contact with each other.

  The roll diameter of the transport roll is preferably 50 mm to 300 mm, and more preferably 75 mm to 150 mm. The width | variety in particular of a conveyance roll is not restrict | limited, According to the width | variety of the glass structure to convey, it can set appropriately.

  The holding angle of the laminate b in the transport roll is preferably 30 ° to 120 °, more preferably 40 ° to 90 °.

  Through the steps (A) to (C), a glass structure piece having a predetermined shape is obtained. Preferably, the steps (A) to (C) are performed continuously (that is, using a long glass structure without taking up the workpiece after the steps (A) and (B)). Is preferred. The line speed at the time of producing the glass structure piece can be set to any appropriate speed as long as the effect of the present invention is obtained. The line speed in the step (C) is, for example, 1 m / min to 30 m / min. Moreover, the manufacturing process of a glass structure piece may be accompanied by inching control. For example, in the step (A), in order to form a preliminary cutting line in thin glass, the line may be temporarily stopped by inching control.

  Moreover, the manufacturing method of the said glass structure piece may include arbitrary appropriate pre-processes and / or post-processes. For example, when the glass structure includes a layer composed of a material other than thin glass on one or both sides of the thin glass, the thin glass and the layer (for example, an optical film) are laminated before the step (A). A step of cutting the layer (for example, an optical film) in accordance with the size / position of the portion to be cut may be performed. Moreover, after a process (C), a carrier film may be cut | disconnected and each glass structure piece may be isolate | separated and separated into pieces.

  The glass structure piece may be provided with a carrier film. In the glass structure piece with the carrier film, the carrier film can function as a protective film for the glass structure piece.

DESCRIPTION OF SYMBOLS 10 Thin glass 11 Cut planned part 12 Cut preliminary line 20 Carrier film 30 Conveyance roll 100 Glass structure 110 Glass structure piece

Claims (12)

A method for producing a glass structure piece by cleaving a glass structure comprising thin glass,
A step (A) of forming, in the thin glass, a cleaving preliminary line that defines a cleaving scheduled portion having at least one corner portion;
A step (B) of laminating the glass structure and a carrier film to form a laminate b;
A step (C) of obtaining a glass structure piece by cleaving the thin glass along the cleaving preliminary line by conveying the laminated body b along the conveying roll while being bent in the thickness direction. ,
In the step (C), when the portion to be cut is placed along the transport roll, the corner portion a, which is one of the corner portions of each portion to be cut, is connected to each of the two sides joined by the corner portion a. Including a plan view angle with respect to the axial direction of the transport roll to be 5 ° or more, and first entering the transport roll within each scheduled cutting portion,
Manufacturing method of glass structure piece.   The manufacturing method of the glass structure piece of Claim 1 with which the said glass structure is comprised with a thin glass single-piece | unit.   The method for producing a glass structure piece according to claim 1, wherein the glass structure is composed of thin glass and a layer formed of a material other than thin glass.   The manufacturing method of the glass structure piece of Claim 3 whose layer formed from materials other than the said thin glass is a resin layer.   The manufacturing method of the glass structure piece in any one of Claim 1 to 4 whose thickness of the said thin glass is 10 micrometers-250 micrometers.   The manufacturing method of the glass structure piece in any one of Claim 1 to 5 whose angle which two sides connected by the said corner part a make is 60 degrees-120 degrees.   The manufacturing method of the glass structure piece in any one of Claim 1 to 5 whose shape of the said cleaving part is a rectangular shape.   The glass structure according to any one of claims 1 to 7, wherein when the carrier film is laminated on the glass structure, a pressure applied to the glass structure and the carrier film is set to 1000 N / m or less. A manufacturing method of a piece.   The manufacturing method of the glass structure piece in any one of Claim 1 to 8 including performing lamination | stacking of the said carrier film and the said glass structure by spraying of air.   The glass structure piece according to any one of claims 1 to 9, wherein a planar view angle formed between each of the two sides joined at the corner portion a and the axial direction of the transport roll is 30 ° to 60 °. Production method.   The method for manufacturing a glass structure piece according to any one of claims 1 to 10, comprising disposing the transport roll so that an axial direction of the transport roll and a transport direction of the laminated body b are not orthogonal to each other. .   The manufacturing method of the glass structure piece of Claim 11 whose angle which the axial direction of the said conveyance roll and the conveyance direction of the said laminated body b make is 30 degrees-60 degrees.

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