WO2013154089A1 - ガラス板の梱包方法および梱包体 - Google Patents
ガラス板の梱包方法および梱包体 Download PDFInfo
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- WO2013154089A1 WO2013154089A1 PCT/JP2013/060691 JP2013060691W WO2013154089A1 WO 2013154089 A1 WO2013154089 A1 WO 2013154089A1 JP 2013060691 W JP2013060691 W JP 2013060691W WO 2013154089 A1 WO2013154089 A1 WO 2013154089A1
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- glass plate
- glass
- electronic device
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- packing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
- B65D85/48—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for glass sheets
Definitions
- the present invention relates to a method for packing a glass plate and a packing body.
- a large glass plate is widely used in flat panel displays (FPD) such as liquid crystal displays and plasma displays.
- FPD flat panel displays
- Such a large glass plate is housed in a packaging container or the like in a state where a plurality of glass plates are laminated during storage, transportation, or the like, and is used as a package.
- a glass sheet interleaf (hereinafter simply referred to as “interleaf”) is provided between the laminated glass plates. Is sometimes inserted).
- a glass plate packing container in which a horizontal plate receiving portion is attached on a pedestal is used, and glass plates and slip sheets are alternately stacked on the plate receiving portion in a flat state.
- a packaging method for storing the product is known (Patent Document 1). Further, a bottom receiving plate on which the glass plate is placed is provided on the pedestal so as to be inclined with respect to the upper surface of the pedestal. Further, the bottom receiving plate is 90 to 100 ° from the lower end side of the bottom receiving plate.
- a glass plate packaging container having a back plate that rises at an angle, the glass plate and the interleaf are alternately placed from the back plate side so that they are stacked on the bottom plate and placed on the glass.
- a packing method for storing and packing a plate laminate in an inclined state Patent Document 2.
- glass plates used for FPD and the like are different from architectural window glass and the like, and it is required to keep the surface for forming electronic device members (surface on which functional layers such as RGB layers are formed) with particularly high cleanliness. Is done. Therefore, a packaging method capable of reducing the number of particles adhering to the electronic device member forming surface of the glass plate is required more than the packaging method of Patent Document 2.
- An object of the present invention is to provide a method for packing a glass plate that can hold the electronic device member forming surface of the plate with high cleanliness, and a package that is packed using the packing method.
- the glass plate packing method of the present invention is a glass plate packing method for alternately laminating and packing a plurality of glass plates and interleaving sheets for glass plates inserted between the plurality of glass plates, It is the method of laminating
- the glass sheet interleaving paper is inserted between each of the three or more glass plates, and the wire surfaces of the plurality of glass sheet interleaving papers. It is preferable that the directions of all face the same direction.
- the said glass plate is a glass plate manufactured by the float glass process, and the said member formation surface for electronic devices is a grinding
- the packing body of the present invention is a packing body having a glass plate packing container and a glass plate laminated body placed on the glass plate packing container,
- the glass plate laminate is formed by alternately laminating a plurality of glass plates and interleaving sheets for glass plates inserted between the plurality of glass plates, and an electronic device member forming surface of the glass plates, The wire surface of the glass sheet interleaf is facing.
- the packing body of the present invention is a glass plate laminate in which glass plates and glass plate interleaving paper are alternately laminated, and adhesion of particles from the glass plate interleaving paper to the electronic device member forming surface of the glass plate. The number is reduced, and the electronic device member forming surface of the glass plate is maintained with high cleanliness.
- FIG. 1 is the front view which showed schematic structure of the glass plate packaging container which can be used for the packaging method of the glass plate of this invention.
- FIG. 2 is a side view of the glass plate packaging container of FIG.
- FIG. 3 is a side view showing a packing body in which a glass plate is packed in the glass plate packing container of FIG.
- FIG. 4 is a diagram illustrating a configuration of a laminated body including a glass plate and a slip sheet in the example.
- FIG. 5 is a graph showing the measurement results of the number of particles in Examples 1 to 3.
- the glass plate packing method of the present invention is for flat panel displays (FPD) such as liquid crystal displays and plasma displays, for solar cells, for lighting, for thin film secondary batteries, or for semiconductor wafers on which a circuit is formed.
- FPD flat panel displays
- This is a method of packing a glass plate that is used by forming an electronic device member (functional element) on one surface, such as a glass plate.
- the electronic device member include a thin film transistor (TFT), a color filter including an RGB layer, and the like.
- TFT thin film transistor
- RGB layer color filter including an RGB layer
- the surface of the glass plate on which the electronic device member is formed is referred to as an electronic device member forming surface.
- the surface on the opposite side to the member formation surface for electronic devices in a glass plate is called an opposite surface.
- the glass plate packing method of the present invention a plurality of glass plates and a slip sheet inserted between the plurality of glass plates are alternately laminated to form a glass plate laminate, and the glass plate laminate is a glass plate.
- the slip sheet is inserted between the glass plates in order to avoid the glass plates from coming into contact with each other and being damaged, thereby stabilizing the quality of the glass plates and improving the transport efficiency.
- the electronic device member forming surface of the glass plate faces the wire surface of the slip sheet. That is, in a glass plate laminated body, the member formation surface for electronic devices of a glass plate and the wire surface of a slip sheet are made to contact.
- the wire surface of interleaving paper refers to the surface that is in contact with the wire when draining the liquid interleaving paper through the wire in the manufacture of interleaving paper. Moreover, the surface on the opposite side to the wire surface in a slip sheet is called a felt surface.
- the present inventors consider that the number of particles adhering to the electronic device member forming surface of the glass plate may differ depending on the surface of the slip sheet to be brought into contact with the electronic device member forming surface of the glass plate.
- the number of particles when the felt surface was brought into contact with the electronic device member forming surface and when the wire surface was brought into contact were examined in detail.
- the number of particles adhering to the electronic device member forming surface of the glass plate is reduced.
- the direction of the interleaf papers is random, and the electronic device member forming surface of the glass plates has a gap.
- the felt side of the paper was in contact with the wire side.
- the surface of the slip sheet that is brought into contact with the electronic device member forming surface of the glass plate is unified with the wire surface that is difficult to adhere particles, so that the slip sheet can be used at the time of packing.
- the number of particles adhering to the electronic device member forming surface of the glass plate is reduced, and the electronic device member forming surface can be maintained with high cleanliness.
- more particles are attached to the opposite surface of the glass plate from the felt surface of the slip sheet than the electronic device member forming surface.
- a polarizing plate or the like may be provided on the opposite surface, there is no practical problem because a member for an electronic device is not formed.
- the glass plate packing method of the present invention is particularly effective for large glass plates used for FPDs and the like.
- the large glass plate is heavy, and the surface pressure applied to each glass plate when laminated is increased, so that the glass plate and the interleaf are more likely to be in close contact, and particles are formed on the surface of the electronic device member forming surface. There is a high possibility of adhesion.
- the packing method of the present invention is very useful because the number of particles adhering to the electronic device member forming surface can be reduced even in the lamination of such large glass plates.
- Specific examples of the size of the large glass plate include, for example, a glass plate having a plate thickness of 0.1 mm to 3.0 mm and a length of each side of 1500 mm to 3500 mm.
- the glass plate is a glass plate manufactured by a float process, and the electronic device member forming surface is preferably a polished surface.
- the electronic device member forming surface is preferably a polished surface.
- one surface of a glass plate molded from molten glass by the float process is polished with a rotating and / or revolving polishing tool to remove minute irregularities and undulations on the surface.
- the glass plate is formed into a thin plate having a predetermined thickness that satisfies the flatness required for the glass plate.
- cerium oxide or colloidal silica such as a polishing method described in Japanese Patent Laid-Open No. 2004-122351 or International Publication No. 2011/052529 is used as abrasive grains. Polishing using a slurry is preferred.
- the glass plate may be a glass plate manufactured by another method such as a fusion method.
- the interleaving paper consists of chemical pulp such as kraft pulp (KP), sulfite pulp (SP), soda pulp (AP), semi-chemical pulp such as semi-chemical pulp (SCP), chemi-grandwood pulp (CGP), groundwood pulp ( GP), thermo-mechanical pulp (TMP, BCTMP), refiner Grandwood pulp (RGP) and other mechanical pulp, and non-wood fiber pulp and synthetic pulp, etc. made from cocoons, cocoons, hemp, kenaf, etc.
- Known slip sheets can be used. Further, the slip sheet may be a raw material of a mixture of these, or a raw material containing cellulose or the like. These raw materials may be used paper, virgin pulp, or a mixture of used paper and virgin pulp.
- the size of the slip paper is preferably larger than the glass plate. That is, it is preferable that the interleaving paper protrudes from the glass plate when the glass plates and interleaving paper are alternately laminated. Thereby, it can suppress stably that glass plates contact in the case of packing. Therefore, the electronic device member forming surface of the glass plate can be protected more stably. Further, since the glass plate can be separated from the slip sheet while the protruding portion of the slip sheet is pressed, the unpacking operation is facilitated.
- the smoothness (JIS P 8119 (1976)) of the wire surface of the interleaving paper is preferably 20 seconds or less, and more preferably 18 seconds or less.
- the smoothness of the felt surface of the interleaf paper is 20 seconds or less because it can suppress the occurrence of paper texture, burns, dirt, etc. on the opposite surface of the glass plate, as with the wire surface. Is preferable, and 18 seconds or less is more preferable.
- the resin content of the slip (JIS P 8205 (1976)) is preferably 0.1% by mass or less, and more preferably 0.05% by mass or less. If the resin content of the slip sheet is less than or equal to the above upper limit value, the number of particles adhering to the glass plate surface from the slip sheet becomes smaller, and it becomes easy to maintain the quality of the glass plate.
- Such a slip sheet can be basically manufactured by using a known slip sheet making method.
- the direction of the electronic device member forming surface of the glass plate in the glass plate laminate and the wire surface of the slip sheet is not particularly limited as long as the electronic device member forming surface of the glass plate and the wire surface of the slip sheet are facing each other.
- all the wire surfaces of the slip sheets face the same direction.
- it is. That is, it is preferable to insert all the slip sheets so that the wire surfaces face all the electronic device member forming surfaces with respect to the glass plates laminated so that the electronic device member forming surfaces are all in the same direction.
- the glass plate when the glass plate is placed flat, the glass plate is laminated so that the electronic device member forming surface of the glass plate is all facing down, and the wire surface of the inserted paper is all facing up, or It is preferable to laminate so that the device member forming surfaces are all facing upward, and the wire surfaces of the inserted slip sheets are all facing downward.
- all the electronic device member forming surfaces of the glass plate are directed to the back plate, and all the wire surfaces of the inserted paper are directed to the opposite side of the back plate. It is preferable to laminate so that all the electronic device member forming surfaces of the glass plate are directed to the opposite side of the back plate and all the wire surfaces of the inserted paper are directed to the back plate side. .
- the glass plate packaging container 100 of the present embodiment includes a pedestal 10, two flat bottom receiving plates 12 provided on the pedestal 10 with an inclination of 5 ° to 25 °, and a bottom from the lower end side of the bottom receiving plate 12.
- four support columns 18 provided so as to stand vertically from the pedestal 10 on the opposite side (right side in FIG. 2) of each vertical piece 14 to the back plate 16, and each vertical piece 14
- a reinforcing member 20 that spans the piece 14 and the column 18.
- the electronic device member forming surface 32a of the glass plate 32 is on the bottom receiving plate 12 of the glass plate packing container 100.
- a plurality of glass plates 32 and a glass plate interleaving paper 34 larger than the glass plate 32 (hereinafter simply referred to as “interleaf 34”) are alternately stacked and laminated so as to face the 16 side.
- the stacked body 30 is placed.
- the interleaf paper 34 has the wire surface 34a facing away from the back plate 16 (left side in FIG. 3), and the electronic device member forming surface 32a of the glass plate 32 and the wire surface 34a of the interleaf paper 34 face each other. To make them contact.
- the glass plate laminated body 30 placed on the bottom receiving plate 12 of the glass plate packing container 100 is a glass plate from the side opposite to the back receiving plate 16 (left side in FIG. 3) and the side surface side (left and right sides in FIG. 1).
- a pressing member (not shown) provided in the packaging container 100 is pressed and fixed.
- the lamination of the glass plate 32 and the interleaving paper 34 is preferably performed in a clean room. Thereby, it can suppress that the dust etc. in atmosphere adhere to the member formation surface 32a for electronic devices of the glass plate 32.
- FIG. For example, in the clean room, the slip sheet 34 is placed on the glass plate 32 that is placed flat with the electronic device member forming surface 32a facing upward so that the wire surface 34a contacts the electronic device member forming surface 32a. Thereafter, the glass plate 32 and the interleaving paper 34 are picked up and lifted from above the interleaving paper 34 by a robot or the like, and the bottom receiving plate so that the electronic device member forming surface 32a of the glass plate 32 faces the back receiving plate 16 side. 12 is mounted. By repeating this, the glass plates 32 and the interleaving paper 34 can be alternately laminated.
- the interleaf paper 34 is larger than the glass plate 32, and the interleaf paper 34 protrudes from the upper side of the glass plate 32 in the glass plate laminate 30.
- the glass plate 32 and the slip sheet 34 are sequentially taken out by pressing the protruding portion on the upper end side of the slip sheet 34 and separating the glass sheet 32 from the slip sheet 34.
- the slip sheet 34 may protrude from the side end side of the laminated glass plate 32. In this case, the slip sheet 34 protruding from the side end side is folded along the side edge of the glass plate 32 and packed so as to cover the side surface of the glass plate 32, so that the side surface of the glass plate 32 is also protected by the slip sheet 34. can do.
- the surface of the interleaf paper 34 covering the side surface of the glass plate 32 is preferably a wire surface 34a.
- the packaging body 1 which has the glass plate packaging container 100 and the glass plate laminated body 30 mounted on the glass plate packaging container 100 by the packaging method demonstrated above is obtained.
- the method of laminating the glass plates in an inclined state is more effective than the surface pressure applied to each glass plate as compared with the case of laminating the glass plates flat. Becomes smaller, and the glass plate and the interleaf become difficult to adhere excessively. Therefore, it is preferable at the point which becomes difficult for a particle to adhere to the member formation surface for electronic devices of a glass plate from a slip sheet.
- the glass plate packing method of the present invention may be a method of laminating a plurality of glass plates flat.
- the packaging body of the present invention is not limited to the packaging body 1.
- the packaging body is horizontal on the pedestal.
- a glass plate packaging container to which a plate receiving portion is attached may be used, and a glass plate and a slip sheet may be alternately stacked on the plate receiving portion in a flat state to form a package.
- Example 1 In a clean room, as shown in FIG. 4, a resin sheet (PORON (registered trademark), manufactured by Roger Sinoac Co., Ltd.) having a thickness of 3 mm as a buffer material 212 on an aluminum plate 210 (length 500 mm ⁇ width 400 mm ⁇ board thickness 10 mm). ) was installed. Furthermore, on the buffer material 212, a pseudo plate 214 having the same shape as the glass plate to be measured (non-measurable glass plate (AN100 manufactured by Asahi Glass Co., Ltd.). Length 470 mm ⁇ width 370 mm ⁇ thickness 0.7 mm) is installed.
- PORON registered trademark
- AN100 non-measurable glass plate
- interleaving paper 216 10 interleaving papers D (500 mm long ⁇ 400 mm wide) and 10 interleaving papers A (500 mm long ⁇ 400 mm wide)
- Twenty glass plates 218 to be measured (AN100 manufactured by Asahi Glass Co., Ltd., length: 470 mm ⁇ width: 370 mm ⁇ thickness: 0.7 mm) were alternately laminated so that the interleaf paper 216 was in contact with the pseudo plate 214.
- the lamination of the interleaf paper 216 and the glass plate 218 is such that the electronic device member forming surface (polishing surface) of the glass plate 218 faces all downward, and the surface of the interleaf paper 216 in contact with the electronic device member forming surface is as follows. I made it in order. Note that (1) means the first slip sheet from the bottom, and so on. (1) The felt surface of the slip sheet D. (2) The wire surface of the slip sheet D. (3) Felt surface of interleaf paper A. (4) The wire surface of the slip sheet A. (5) to (8), (9) to (12), (13) to (16), and (17) to (20) are in the same order as (1) to (4), respectively.
- the slip sheet A is set as the pseudo slip sheet 220 on the uppermost glass plate 218, and the pseudo plate 222 same as the pseudo plate 214 is set on the slip sheet A to obtain the glass plate laminate 201.
- a resin sheet (PORON (registered trademark), manufactured by Roger Sinoac Co., Ltd.) having a thickness of 3 mm was installed as the buffer material 224 on the pseudo plate 222 of the glass plate laminate 201.
- the said laminated body was decomposed
- the number of particles with a size of 1 ⁇ m or more adhered to the electronic device member forming surface of each glass plate 218 was measured by a particle number measuring machine (FPD foreign matter inspection apparatus HS-730, manufactured by Toray Engineering Co., Ltd.) An average value of the number of particles in the electronic device member forming surface brought into contact with the felt surface of the commercially available interleaf paper A and an average value of the number of particles in the electronic device member forming surface in contact with the wire surface of the interleaf paper A Each was calculated. Moreover, the average value of the number of particles measured about the electronic device member formation surface of each glass plate before lamination
- Example 2 The number of particles on the member forming surface for electronic devices brought into contact with the wire surface of the interleaving paper B was evaluated in the same manner except that the interleaving paper A to be measured was changed to the commercial interleaving paper B.
- Example 3 Except for changing the interleaving paper A to be measured to a commercially available interleaving paper C, the number of particles on the member forming surface for electronic devices brought into contact with the wire surface of the interleaving paper C was evaluated in the same manner. In Examples 1 to 3, when the measurement results of the number of particles on the glass plate brought into contact with the reference interleaf D were confirmed, the error was sufficiently small. The evaluation results of Examples 1 to 3 are shown in FIG.
- the number of particles adhering from the interleaf paper to the electronic device member forming surface of the glass plate was smaller on the wire surface than on the felt surface.
- SYMBOLS 1 Packing body, 10 ... Base, 12 ... Bottom receiving plate, 14 ... Vertical piece, 16 ... Back receiving plate, 18 ... Strut, 20 ... Reinforcement material, 30 ... Glass plate laminate, 32 ... Glass plate, 32a ... Electronic device member forming surface, 34 ... Glass plate interleaving paper, 34a ... Wire surface, 100 ... Glass plate packaging container.
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Abstract
Description
特許文献2の梱包方法は、ガラス板が斜めに立てられた状態で梱包されるので、特許文献1の平置きにされる梱包方法に比べて各々のガラス板にかかる面圧が小さく、ガラス板と合紙とが過度に密着し難い。そのため、平置きの状態で積層される場合に比べてガラス板表面に付着するパーティクル数が少なくなる。
前記ガラス板の電子デバイス用部材形成面と、前記ガラス板用合紙のワイヤー面とが向き合うように積層する方法である。
また、本発明のガラス板の梱包方法において、前記ガラス板がフロート法で製造されたガラス板であり、前記電子デバイス用部材形成面が研磨面であることが好ましい。
前記ガラス板積層体は、複数枚のガラス板と、複数枚のガラス板の間に挿入されるガラス板用合紙とが交互に積層されており、かつ前記ガラス板の電子デバイス用部材形成面と、前記ガラス板用合紙のワイヤー面とが向き合っている。
また、本発明の梱包体は、ガラス板とガラス板用合紙とが交互に積層されたガラス板積層体において、ガラス板用合紙からガラス板の電子デバイス用部材形成面へのパーティクルの付着数が低減され、ガラス板の電子デバイス用部材形成面が高い清浄度で保持される。
本発明のガラス板の梱包方法は、ガラス板と合紙とを積層する際、ガラス板の電子デバイス用部材形成面と合紙のワイヤー面とを向き合わせる。すなわち、ガラス板積層体において、ガラス板の電子デバイス用部材形成面と合紙のワイヤー面とを接触させる。これにより、合紙からガラス板の電子デバイス用部材形成面に付着する紙粉等のパーティクルの数を低減することができる。
合紙のワイヤー面とは、合紙の抄紙製造において、液状の合紙を、ワイヤーを通して水抜きする際にワイヤーに接している面をいう。また、合紙におけるワイヤー面と反対側の面をフェルト面という。
これに対し、本発明のガラス板の梱包方法では、ガラス板の電子デバイス用部材形成面に接触させる合紙の面を、パーティクルを付着させ難いワイヤー面に統一することで、梱包時に合紙からガラス板の電子デバイス用部材形成面に付着するパーティクル数が低減され、電子デバイス用部材形成面を高い清浄度で保持することができる。なお、本発明の梱包方法では、ガラス板の反対面には、電子デバイス用部材形成面に比べて合紙のフェルト面から多くのパーティクルが付着することになる。しかし、反対面は偏光板等を設けることはあるものの、電子デバイス用部材は形成しないので実用上問題はない。
大型のガラス板のサイズの具体例としては、例えば、板厚が0.1mm~3.0mm、縦横それぞれの1辺の長さが1500mm~3500mmのガラス板等が挙げられる。
なお、ガラス板は、フュージョン法等の他の方法で製造されたガラス板でもよい。
また、これらの原料は、古紙であっても、バージンパルプであっても、古紙とバージンパルプとの混合物であってもよい。中でも、バージンパルプが好ましい。
合紙の大きさは、ガラス板よりも大きいことが好ましい。すなわち、ガラス板と合紙とを交互に積層したときに、合紙がガラス板からはみ出すことが好ましい。これにより、梱包の際にガラス板同士が接触することを安定して抑制できる。そのため、ガラス板の電子デバイス用部材形成面をより安定して保護することができる。また、合紙のはみ出した部分を押さえた状態で、該合紙からガラス板を分離することができるので、開梱作業が容易になる。
合紙のフェルト面の平滑度(JIS P 8119(1976年))は、ワイヤー面と同様に、ガラス板の反対面に紙肌模様、焼け、汚れ等が生じることを抑制できることから、20秒以下が好ましく、18秒以下がより好ましい。
このような合紙は、基本的に、公知の合紙の製紙方法を利用して製造できる。
例えば、ガラス板を平置きにする場合、ガラス板の電子デバイス用部材形成面が全て下向きになり、挿入する合紙のワイヤー面が全て上向きになるように積層するか、または、ガラス板の電子デバイス用部材形成面が全て上向きになり、挿入する合紙のワイヤー面が全て下向きとなるように積層することが好ましい。また、後述する梱包体のような縦置きにする場合、ガラス板の電子デバイス用部材形成面が全て背受け板側に向き、挿入する合紙のワイヤー面が全て背受け板の反対側に向くように積層するか、または、ガラス板の電子デバイス用部材形成面が全て背受け板の反対側に向き、挿入する合紙のワイヤー面が全て背受け板側に向くように積層することが好ましい。
本実施形態のガラス板梱包容器100は、台座10と、台座10上に5°~25°傾斜して設けられた平板状の2つの底受け板12と、底受け板12の下端側から底受け板12に対して90°~100°の角度で立ち上がる柱状の4本の縦片14と、それら4本の縦片14で支持されるように底受け板12側に設けられた1枚の平板状の背受け板16と、各々の縦片14の背受け板16と反対側(図2の右側)に台座10から垂直に立ち上がるように設けられた4本の支柱18と、各々の縦片14と支柱18に架け渡された補強材20と、を有する。
ガラス板積層体30は、各々のガラス板32が自重によって背受け板16側に隣接するガラス板32に接するので、各ガラス板32間には隙間が生じない。
ガラス板梱包容器100の底受け板12上に載置したガラス板積層体30は、背受け板16の反対側(図3の左側)、および側面側(図1の左右側)から、ガラス板梱包容器100に設けられた押え部材(図示せず)等で押さえて固定する。
例えば、クリーンルーム内において、電子デバイス用部材形成面32aを上向きにして平置きにしたガラス板32上に、ワイヤー面34aが電子デバイス用部材形成面32aに接するように合紙34を載せる。その後、ガラス板32と合紙34とを、合紙34の上からロボット等で吸着して持ち上げ、ガラス板32の電子デバイス用部材形成面32aが背受け板16側に向くように底受け板12上に載置する。これを繰り返すことで、ガラス板32と合紙34を交互に積層することができる。
また、本発明の梱包方法では、積層したガラス板32の側端側から合紙34がはみ出るようにしてもよい。この場合、側端側からはみ出した合紙34をガラス板32の側縁に沿って折り曲げ、ガラス板32の側面を覆うようにして梱包することで、合紙34によってガラス板32の側面も保護することができる。ガラス板32の側面に付着するパーティクル数を少なくするため、ガラス板32の側面を覆う合紙34の面は、ワイヤー面34aが好ましい。
以上説明した梱包方法により、ガラス板梱包容器100と、ガラス板梱包容器100上に載せられたガラス板積層体30とを有する梱包体1が得られる。
また、前記ガラス板梱包容器100を用いた場合のように、ガラス板を傾斜させた状態で積層する方法は、ガラス板を平置きにして積層する場合に比べて各々のガラス板にかかる面圧が小さくなり、ガラス板と合紙とが過度に密着し難くなる。そのため、合紙からガラス板の電子デバイス用部材形成面にパーティクルがより付着し難くなる点で好ましい。
なお、本発明のガラス板の梱包方法は、複数枚のガラス板を平置きにして積層する方法であってもよい。また、本発明の梱包体も前記梱包体1には限定されず、例えば、ガラス板の電子デバイス用部材形成面と合紙のワイヤー面とが向かい合わせに積層されていれば、台座上に水平な板受け部が取り付けられたガラス板梱包容器を用い、前記板受け部上にガラス板と合紙とを交互に平置きの状態で積層して梱包体としてもよい。
[例1]
クリーンルーム内において、図4に示すように、アルミニウム板210(縦500mm×横400mm×板厚10mm)上に、緩衝材212として厚さ3mmの樹脂シート(PORON(登録商標)、株式会社ロジャースイノアック製)を設置した。
さらにその緩衝材212の上に、測定対象のガラス板と同形状の擬似板214(非測定対象のガラス板(旭硝子株式会社製AN100)。縦470mm×横370mm×厚さ0.7mm)を設置し、該擬似板214上に、合紙216の20枚(参照用の合紙D(縦500mm×横400mm)10枚と評価対象の合紙A(縦500mm×横400mm)10枚)と、測定対象のガラス板218(旭硝子株式会社製AN100。縦470mm×横370mm×厚さ0.7mm)20枚とを、前記擬似板214に合紙216が接触するように交互に積層した。
合紙216とガラス板218との積層は、ガラス板218の電子デバイス用部材形成面(研磨面)を全て下向きとし、その電子デバイス用部材形成面に接する合紙216の面は下から以下の順になるようにした。なお、(1)は下から1番目の合紙を意味し、以下同様である。
(1)合紙Dのフェルト面。
(2)合紙Dのワイヤー面。
(3)合紙Aのフェルト面。
(4)合紙Aのワイヤー面。
(5)~(8)、(9)~(12)、(13)~(16)、および(17)~(20)は、それぞれ(1)~(4)と同じ順序。
さらに、一番上のガラス板218上に擬似合紙220として合紙Aを設置し、該合紙A上に前記擬似板214と同じ擬似板222を設置して、ガラス板積層体201とした。
その後、ガラス板積層体201の擬似板222上に、緩衝材224として厚さ3mmの樹脂シート(PORON(登録商標)、株式会社ロジャースイノアック製)を設置した。
また、前記各々の平均値から、積層する前のそれぞれのガラス板の電子デバイス用部材形成面について測定したパーティクル数の平均値を差し引いて、合紙起因のパーティクル数を算出した。その後、合紙Aのフェルト面と接触させた電子デバイス用部材形成面における差し引き後のパーティクル数を「1」として正規化したときの、合紙Aのワイヤー面と接触させた電子デバイス用部材形成面における差し引き後のパーティクル数を算出して評価した。
測定対象の合紙Aを、市販の合紙Bに変更した以外は、同様の方法で合紙Bのワイヤー面と接触させた電子デバイス用部材形成面におけるパーティクル数を評価した。
測定対象の合紙Aを、市販の合紙Cに変更した以外は、同様の方法で合紙Cのワイヤー面と接触させた電子デバイス用部材形成面におけるパーティクル数を評価した。
例1~3については、それぞれにおける参照用の合紙Dに接触させたガラス板についてのパーティクル数の測定結果を確認したところ、誤差は充分に小さかった。例1~3の評価結果を図5に示す。
本出願は、2012年4月13日出願の日本国特許出願2012-092122に基づくものであり、その内容はここに参照として取り込まれる。
Claims (4)
- 複数枚のガラス板と、前記複数枚のガラス板の間に挿入されるガラス板用合紙とを交互に積層して梱包するガラス板の梱包方法であって、
前記ガラス板の電子デバイス用部材形成面と、前記ガラス板用合紙のワイヤー面とが向き合うように積層するガラス板の梱包方法。 - 3枚以上の前記ガラス板のそれぞれの間に、各々前記ガラス板用合紙が挿入されており、
複数枚の前記ガラス板用合紙のワイヤー面の向きが全て同じ方向を向いている請求項1に記載のガラス板の梱包方法。 - 前記ガラス板がフロート法で製造されたガラス板であり、前記電子デバイス用部材形成面が研磨面である請求項1または2に記載のガラス板の梱包方法。
- ガラス板梱包容器と、前記ガラス板梱包容器上に載せられたガラス板積層体とを有する梱包体であって、
前記ガラス板積層体は、複数枚のガラス板と、前記複数枚のガラス板の間に挿入されるガラス板用合紙とが交互に積層されており、かつ前記ガラス板の電子デバイス用部材形成面と、前記ガラス板用合紙のワイヤー面とが向き合っている梱包体。
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WO2017038950A1 (ja) * | 2015-09-02 | 2017-03-09 | 旭硝子株式会社 | 導光板用ガラス板の積層方法、取り出し方法、導光板用ガラス板の積層および取り出し方法、ならびにガラス導光板の製造方法 |
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WO2015178383A1 (ja) * | 2014-05-19 | 2015-11-26 | 旭硝子株式会社 | ガラス板用合紙のクリーニング装置及びクリーニング方法及びガラス板積層体及びガラス板梱包体及びガラス板用合紙の製造方法並びにガラス板用合紙 |
CN107499946A (zh) * | 2017-09-26 | 2017-12-22 | 浙江德立自动化装备股份有限公司 | 玻璃堆垛自动化铺纸机 |
CN109188649B (zh) * | 2018-09-19 | 2021-07-02 | 珠海达理宇航科技有限公司 | 一种多边桶及太空望远镜镜片的保护装置 |
JP7115510B2 (ja) * | 2019-06-06 | 2022-08-09 | Agc株式会社 | 積層基板、および梱包体 |
CN114229227A (zh) * | 2022-01-21 | 2022-03-25 | 青岛融合光电科技有限公司 | 载板玻璃的长途运输装置及其降低破损的包装方法 |
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