JP2012188785A - Inserting paper for glass and method for removing stain adhered to glass plate - Google Patents
Inserting paper for glass and method for removing stain adhered to glass plate Download PDFInfo
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本発明は、高度な表面製が要求されるガラス板の間に挿入されるガラス用合紙に関し、特に、合紙からガラス板へ転写される汚れの低減、及びガラス板に付着した汚れの洗浄除去の向上を図ることができるガラス用合紙とガラス板に付着した汚れの除去方法に関するものである。 TECHNICAL FIELD The present invention relates to a slip sheet for glass inserted between glass plates that require a high surface production, and in particular, to reduce the stain transferred from the slip sheet to the glass plate and to clean and remove the stain attached to the glass plate. It is related with the removal method of the stain | pollution | contamination adhering to the slip sheet for glass which can aim at improvement, and a glass plate.
従来から、液晶や太陽光発電等に用いられるガラス板は高度な表面性が要求されているため、このようなガラス板を運搬、保管、荷役する際には、複数枚重ね合わせた各ガラス板の間にガラス用合紙を挿入し、ガラス板同士の接触による傷の生成を防いでいる。このようなガラス用合紙としては、既に種々のものが開発され実用に供されている（例えば、特許文献１、２を参照）。 Conventionally, glass plates used for liquid crystals, solar power generation, etc. have been required to have a high degree of surface properties. Therefore, when transporting, storing and handling such glass plates, a plurality of stacked glass plates are used. Glass interleaving paper is inserted to prevent the generation of scratches due to contact between the glass plates. Various types of such slip sheets for glass have already been developed and put into practical use (for example, see Patent Documents 1 and 2).
また、最近では更に付加価値を加えたものが提案されており、例えば、特許文献３に示されるように、合紙に水解性（ほぐれやすさ）をもたせてパルプ原料として再利用を図るようにしたものや、特許文献４に示されるように、表面に発泡性マイクロカプセルを含む塗工層を設けて擦れ傷のより一層の防止を図ったものがあり、いずれもガラス板同士の接触による傷の生成を防いでいる。 In addition, recently, a value added value has been proposed. For example, as shown in Patent Document 3, the slip paper is provided with water disintegration (easy to loosen) so as to be reused as a pulp raw material. And as disclosed in Patent Document 4, a coating layer containing foamable microcapsules is provided on the surface to further prevent abrasion scratches, both of which are scratches caused by contact between glass plates. Is prevented.
一方、液晶デバイスや太陽電池等の需要が高まるのに従い、合紙の需要も大きくなってきており、コスト削減の観点から安価な古紙を利用してコストの低減が検討されている。しかし、古紙を用いた場合は、古紙に汚れや印刷インク等の不純物が含まれているため、これらの不純物が合紙からガラス板へ転写され汚れを発生させるという現象があった。そのため、品質を確保するには高品質なパルプ原料を用いることが望ましいが、コスト高になるという問題があった。 On the other hand, as the demand for liquid crystal devices, solar cells, and the like increases, the demand for interleaving paper is also increasing. From the viewpoint of cost reduction, cost reduction is being considered using inexpensive waste paper. However, when used paper is used, the used paper contains impurities such as stains and printing ink. Therefore, there is a phenomenon that these impurities are transferred from the slip sheet to the glass plate to cause stains. Therefore, it is desirable to use a high-quality pulp raw material in order to ensure the quality, but there is a problem that the cost increases.
また、ガラス板の場合は高度な表面性が要求されるため、最終的に洗浄処理を施して表面に付着した汚れを洗い落としている。この洗浄装置は大掛かりで設備コストが高いものであり、大量の洗浄水の使用は処理コストを高くし、処理時間も長くなるため、コスト削減や省エネルギーの観点から簡単な洗浄処理によって汚れを除去することが望まれている。しかし、本発明者の研究によれば、古紙を用いた場合は、合紙からガラス板へ転写される不純物の汚れの中にはアクリルアミドからなる炭素系粘着物が存在しており、この炭素系粘着物が洗浄処理ではうまく除去できないものであることを解明した。 In the case of a glass plate, a high degree of surface property is required, so that a final cleaning process is performed to wash off dirt adhering to the surface. This cleaning device is large and has high equipment cost, and the use of a large amount of cleaning water increases the processing cost and the processing time, so the dirt is removed by a simple cleaning process from the viewpoint of cost reduction and energy saving. It is hoped that. However, according to the study of the present inventor, when used paper is used, there is a carbon-based adhesive material made of acrylamide in the dirt of impurities transferred from the interleaf to the glass plate. It was clarified that the sticky substance could not be removed well by the cleaning process.
このように、古紙を利用して安価に製造することと、簡単な洗浄処理により汚れを除去することとは相矛盾しており、両者を満足できる合紙は現時点では存在していない。
従って、古紙を利用して安価に製造することができ、しかもガラス板へ転写された不純物の汚れも洗浄処理で簡単に除去することができる新たなガラス用合紙の開発が望まれていた。
Thus, there is a contradiction between producing cheaply using waste paper and removing dirt by a simple cleaning process, and there is no interleaving paper that can satisfy both.
Accordingly, it has been desired to develop a new glass slip sheet that can be produced at low cost by using waste paper and that can easily remove impurities transferred to the glass plate by a cleaning process.
本発明は前記のような問題点を解決して、古紙を利用して低コストで製造することができ、しかも、古紙に含まれた不純物が合紙からガラス板へ転写されて汚れを発生させることを低減することができ、また汚れが生じたとしても、その汚れを簡単な浄化処理によって確実に除去することができるガラス用合紙とガラス板に付着した汚れの除去方法を提供することを目的として完成されたものである。 The present invention solves the above-mentioned problems and can be manufactured at low cost by using waste paper, and the impurities contained in the waste paper are transferred from the slip paper to the glass plate to generate stains. It is possible to provide a glass interleaving paper and a method for removing dirt adhering to a glass plate that can be reliably removed by simple purification treatment even if dirt is generated. It was completed as a purpose.
上記課題を解決するためになされた本発明は、古紙を原料として抄造された合紙本体の表面に、フッ素コーティング皮膜を形成したことを特徴とするガラス用合紙である。 The present invention made in order to solve the above-mentioned problems is a glass interleaving paper characterized in that a fluorine coating film is formed on the surface of an interleaving paper body made from waste paper as a raw material.
また、前記ガラス用合紙を、積層した各ガラス板の間に挿入して運搬、保管、荷役を行う際に、前記ガラス用合紙からガラス板へ転写される不純物の汚れを、フッ素を介在させた状態でガラス板表面に付着させ、その後、水で洗浄処理した場合に前記汚れをフッ素の疎水性を利用してガラス板表面から剥離させ、洗い流すようにしたことを特徴とするガラス板に付着した汚れの除去方法である。 Further, when the glass interleaving paper is inserted between the laminated glass plates for carrying, storing and handling, the impurities transferred from the glass interleaving paper to the glass plate are contaminated with fluorine. When attached to the glass plate surface in the state, and then washed with water, the dirt was peeled off from the glass plate surface using the hydrophobicity of fluorine and adhered to the glass plate, which was washed away This is a method for removing dirt.
請求項１に係る発明では、古紙を原料として抄造された合紙本体の表面に、フッ素コーティング皮膜を形成したので、古紙の利用により生産コストの低減化を図ることができ、また、古紙に含まれた不純物がガラス板へ転写されて汚れを発生させたとしても、その汚れをフッ素の疎水性を利用して簡単な浄化処理により容易に除去することができることとなる。 In the invention according to claim 1, since the fluorine coating film is formed on the surface of the interleaf paper body made from waste paper as a raw material, the use of the waste paper can reduce the production cost. Even if the impurities are transferred to the glass plate to generate dirt, the dirt can be easily removed by a simple purification process using the hydrophobicity of fluorine.
また、請求項２に係る発明では、前記ガラス用合紙を、積層した各ガラス板の間に挿入して運搬、保管、荷役を行う際に、前記ガラス用合紙からガラス板へ転写される不純物の汚れを、フッ素を介在させた状態でガラス板表面に付着させ、その後、水で洗浄処理した場合に前記汚れをフッ素の疎水性を利用してガラス板表面から剥離させ、洗い流すようにしたので、洗浄処理により容易に除去することが可能で、効率よく安価にガラス用合紙の生産が可能となる。 Moreover, in the invention which concerns on Claim 2, when inserting the said glass interleaving paper between each laminated | stacked glass plate, and carrying, storing, and handling, the impurity transcribe | transferred from the said glass interleaving paper to a glass plate. Since the dirt is adhered to the glass plate surface with fluorine intervening, and then washed with water, the dirt is peeled off from the glass plate surface using the hydrophobicity of fluorine, and washed away. It can be easily removed by a cleaning process, and it becomes possible to produce a glass slip sheet efficiently and inexpensively.
以下に、本発明の好ましい実施の形態を示す。
本発明は、古紙を原料として抄造された合紙本体の表面に、フッ素コーティング皮膜を形成したことを特徴とするガラス用合紙である。
前記古紙は、新聞古紙や各種の印刷物古紙や各種の紙容器古紙などに代表されるが、パルプ古紙として使用されるあらゆる古紙を対象とするものである。これらの古紙を利用した場合は、インク由来の鉱油成分（有機成分）や自然分解で生じるリグノセルロース成分（有機系成分）由来の不純物の汚れが発生し、これがガラス板へ転写されて汚れを発生させると言われている。そして、前記汚れの発生がガラス用合紙の原料として古紙を利用することの阻害要因となっていた。
Hereinafter, preferred embodiments of the present invention will be described.
The present invention is a glass interleaving paper characterized in that a fluorine coating film is formed on the surface of an interleaving paper body made from waste paper as a raw material.
The waste paper is typified by newspaper waste paper, various printed waste papers, various paper container waste papers, and the like, and is intended for all waste papers used as pulp waste papers. When these waste papers are used, dirt of impurities derived from mineral oil components (organic components) derived from ink and lignocellulose components (organic components) generated by natural decomposition occurs, which is transferred to a glass plate to generate stains. It is said to let you. And the generation | occurrence | production of the said stain | pollution | contamination became the obstructive factor of utilizing a waste paper as a raw material of the slip paper for glass.
一方、本発明者の研究によれば、この汚れの中で特にアクリルアミド（Ｃ３Ｈ５ＮＯ）からなる炭素系粘着物は、ガラス板に付着すると水による洗浄処理では除去が困難であることを解明した。そこで本発明者は、前記炭素系粘着物を簡単に除去できればガラス用合紙の原料として古紙を利用することが可能になると考え、フッ素の疎水性を利用することにより、ガラス板に付着している前記炭素系粘着物を水の洗浄処理で容易に剥離することができるとの技術思想に基づき、本発明を完成するに至ったのである。
即ち、合紙本体の表面にフッ素コーティング皮膜を形成することで、古紙に含まれた不純物が合紙からガラス板へ転写されるのを低減することができ、更に、汚れが付着したとしても、フッ素を介在させた状態でガラス板表面に付着していれば、その後、水で洗浄処理した際に前記汚れをフッ素の疎水性を利用してガラス板表面から容易に剥離して洗い流すことができることを解明した。
On the other hand, according to the inventor's research, carbon-based adhesives made of acrylamide (C 3 H 5 NO), among these stains, are difficult to remove by washing with water if they adhere to a glass plate. Elucidated. Therefore, the present inventor believes that if the carbon-based adhesive can be easily removed, it will be possible to use waste paper as a raw material for glass interleaving paper, and by using the hydrophobicity of fluorine, it adheres to the glass plate. The present invention has been completed based on the technical idea that the carbon-based pressure-sensitive adhesive can be easily peeled off by washing with water.
That is, by forming a fluorine coating film on the surface of the interleaf paper, it is possible to reduce the transfer of impurities contained in the wastepaper from the interleaf paper to the glass plate, and even if dirt is attached, If it adheres to the glass plate surface with fluorine intervening, the dirt can be easily peeled off and washed away from the glass plate surface by utilizing the hydrophobicity of fluorine when washed with water. Was elucidated.
前記フッ素コーティング皮膜は、例えば、ポリテトラフルオエチレン、フッ素樹脂誘導体、フッ素系界面活性剤の１種又は２種以上を、溶剤及びイオン水とともに混合して水溶性のフッ素樹脂乳化液（粘度：1500〜2500ｃｐｓ／２０℃）を作成し、これを合紙本体の表面にスプレー処理や塗布処理を施したり、あるいは合紙本体をフッ素樹脂乳化液に浸漬処理するなどの任意の手法でコーティング処理を行い、形成することができる。 The fluorine coating film is made of, for example, a water-soluble fluororesin emulsion (viscosity: 1500) by mixing one or more of polytetrafluoroethylene, fluororesin derivatives, and fluorosurfactants with a solvent and ionic water. ~ 2500 cps / 20 ° C), and this is sprayed or coated on the surface of the interleaving paper body, or coated with any method such as immersing the interleaving paper body in a fluororesin emulsion. Can be formed.
次に、本発明のガラス用合紙を用いてガラス板に付着した汚れの除去方法について説明する。
前記のガラス用合紙は、積層した各ガラス板の間に挿入して使用に供され、この状態でガラス板が運搬、保管、荷役などが行われる。この時、合紙内の不純物がガラス板へ転写されて汚れを発生させるが、本発明ではガラス用合紙が古紙を原料として抄造されているため、不純物の汚れの中にはアクリルアミドからなる炭素系粘着物が存在している。本発明者は、この炭素系粘着物が洗浄処理ではうまく除去できないことを解明している。
そこで本発明では、合紙本体の表面にフッ素コーティング皮膜を形成しておき、汚れが該フッ素コーティング皮膜を通過してガラス板へ転写されるようにし、この結果、前記汚れはフッ素を介在させた状態でガラス板表面に付着することになる。その後、ガラス板を水で洗浄処理すると、フッ素は疎水性を有するため、前記汚れはフッ素の疎水性によってガラス板表面からから簡単に剥離され、洗い流されることとなる。
このように、不純物の汚れの中にアクリルアミドからなる炭素系粘着物が存在していても、フッ素の疎水性を利用することでガラス板から容易に剥離することが可能となる。従って、小規模の洗浄装置で、かつ短時間の洗浄処理によって汚れを除去することができ、コスト削減及び省エネルギーが図れることとなる。
Next, the removal method of the stain | pollution | contamination adhering to the glass plate using the slip paper for glass of this invention is demonstrated.
The above-mentioned interleaving paper for glass is inserted between the laminated glass plates for use, and in this state, the glass plate is transported, stored, handled, etc. At this time, impurities in the slip paper are transferred to the glass plate to generate stains. In the present invention, since the slip paper for glass is made from waste paper, carbon in acrylamide is contained in the stains of impurities. System adhesives are present. The present inventor has clarified that this carbon-based adhesive cannot be removed well by washing treatment.
Therefore, in the present invention, a fluorine coating film is formed on the surface of the interleaf paper body so that the dirt passes through the fluorine coating film and is transferred to the glass plate. As a result, the dirt interposes fluorine. It will adhere to the glass plate surface in a state. Thereafter, when the glass plate is washed with water, fluorine has hydrophobicity, so that the dirt is easily peeled off from the glass plate surface due to the hydrophobicity of fluorine and washed away.
As described above, even if a carbon-based pressure-sensitive adhesive made of acrylamide is present in the dirt of impurities, it can be easily peeled off from the glass plate by utilizing the hydrophobicity of fluorine. Therefore, dirt can be removed by a short-time cleaning process with a small-scale cleaning apparatus, and cost reduction and energy saving can be achieved.
古紙を原料として抄造された合紙本体の表面に、フッ素コーティング皮膜を形成したガラス用合紙を準備した。
フッ素コート材は、ポリテトラフルオエチレン、フッ素樹脂誘導体、フッ素系界面活性剤、パラフィン系低沸点溶剤、マイナスイオン水を混合してなる水溶性のフッ素樹脂乳化液（ゆかわ株式会社製：ＦＥ−１１２）を使用し、これを合紙本体の表面にスプレーコーティングして、ガラス用合紙を成形した。
一方、ガラス板として７×７ｍｍの太陽電池用ガラス基板（旭硝子株式会社製）を準備し、蒸留水で１時間にわたり超音波洗浄して表面の汚れを取り除いた。
An interleaving paper for glass in which a fluorine coating film was formed on the surface of an interleaving paper body made from waste paper was prepared.
The fluorine coating material is a water-soluble fluororesin emulsion prepared by mixing polytetrafluoroethylene, a fluororesin derivative, a fluorosurfactant, a paraffinic low-boiling solvent, and negative ion water (manufactured by Yukawa Corporation: FE- 112) was spray-coated on the surface of the interleaf paper body to form an interleaf paper for glass.
On the other hand, a 7 × 7 mm glass substrate for solar cell (manufactured by Asahi Glass Co., Ltd.) was prepared as a glass plate, and the surface was cleaned by ultrasonic cleaning with distilled water for 1 hour.
このガラス板上に前記ガラス用合紙を敷設し、上から２ｋｇの重りを押し付けた。その後、合紙を取り除き、ガラス板の表面を走査型電子顕微鏡（ＳＥＭ）で観察し汚れの有無を確認した。また、分散型Ｘ線分析（ＥＤＸ）を行うことにより、ガラス板に付着している汚れの種類を判別した。
電子顕微鏡で得られた画像を図１に示すが、ガラス板上に汚れが付着していることがわかる。また、この汚れを分散型Ｘ線分析した結果、Ｃ、Ｈ、Ｎ、Ｏのスペクトルが分析されアクリルアミドからなる炭素系粘着物であることがわかった。更に、フッ素が混入していることも分析され、炭素系粘着物がフッ素を介在させた状態でガラス板表面に付着しているものと推察された。
The glass interleaving paper was laid on the glass plate, and a 2 kg weight was pressed from above. Thereafter, the slip sheet was removed, and the surface of the glass plate was observed with a scanning electron microscope (SEM) to confirm the presence or absence of dirt. Moreover, the kind of dirt adhering to the glass plate was discriminated by performing distributed X-ray analysis (EDX).
An image obtained with an electron microscope is shown in FIG. 1, and it can be seen that dirt is adhered on the glass plate. Further, as a result of dispersive X-ray analysis of this soil, the C, H, N, and O spectra were analyzed and found to be a carbon-based pressure-sensitive adhesive made of acrylamide. Furthermore, it was analyzed that fluorine was mixed, and it was speculated that the carbon-based adhesive was adhered to the glass plate surface with fluorine interposed.
その後、ガラス板を更に蒸留水で２０分間にわたり超音波洗浄し、再びガラス板の表面を走査型電子顕微鏡（ＳＥＭ）で観察するとともに、分散型Ｘ線分析（ＥＤＸ）を行った。なお、２０分の洗浄処理は、通常の処理（１時間）に比べると、１／３である。
電子顕微鏡で得られた画像を図２に示すが、洗浄処理で付着していた汚れが完全に除去されていることがわかる。また、分散型Ｘ線分析した結果は、Ｃ、Ｈ、Ｎ、Ｏのスペクトルは検出されず、更に、フッ素のスペクトルも一切検出されなかった。
Thereafter, the glass plate was further ultrasonically washed with distilled water for 20 minutes, and the surface of the glass plate was again observed with a scanning electron microscope (SEM), and dispersive X-ray analysis (EDX) was performed. The 20-minute cleaning process is 1/3 compared to the normal process (1 hour).
The image obtained with the electron microscope is shown in FIG. 2, and it can be seen that the dirt adhered by the cleaning treatment is completely removed. As a result of the dispersion X-ray analysis, no C, H, N, or O spectrum was detected, and no fluorine spectrum was detected.
＜比較例＞
比較例として、古紙を原料として抄造されたガラス用合紙を準備し、実施例と同様に、超音波洗浄して表面の汚れを取り除いたガラス板上に比較例のガラス用合紙を敷設し、上から２ｋｇの重りを押し付けた。その後、合紙を取り除き、ガラス板の表面を走査型電子顕微鏡（ＳＥＭ）で観察し汚れの有無を確認した。また、分散型Ｘ線分析（ＥＤＸ）を行うことにより、ガラス板に付着している汚れの種類を判別した。
電子顕微鏡で得られた画像を図３に示すが、ガラス板上に汚れが付着していることがわかる。また、この汚れを分散型Ｘ線分析した結果、Ｃ、Ｈ、Ｎ、Ｏのスペクトルが分析されアクリルアミドからなる炭素系粘着物であることがわかった。
<Comparative example>
As a comparative example, glass slip paper made from waste paper was prepared, and the glass slip paper of the comparative example was laid on a glass plate that had been ultrasonically cleaned to remove surface dirt, as in the examples. A 2 kg weight was pressed from above. Thereafter, the slip sheet was removed, and the surface of the glass plate was observed with a scanning electron microscope (SEM) to confirm the presence or absence of dirt. Moreover, the kind of dirt adhering to the glass plate was discriminated by performing distributed X-ray analysis (EDX).
An image obtained with an electron microscope is shown in FIG. 3, and it can be seen that dirt is adhered on the glass plate. Further, as a result of dispersive X-ray analysis of this soil, the C, H, N, and O spectra were analyzed and found to be a carbon-based pressure-sensitive adhesive made of acrylamide.
その後、ガラス板を更に蒸留水で２０分間にわたり超音波洗浄し、再びガラス板の表面を走査型電子顕微鏡（ＳＥＭ）で観察するとともに、分散型Ｘ線分析（ＥＤＸ）を行った。電子顕微鏡で得られた画像を図４に示すが、洗浄処理では繊維状の物質などの合紙由来と考えられる汚れを除去できていないことがわかった。また、分散型Ｘ線分析した結果は、Ｃ、Ｈ、Ｎ、Ｏのスペクトルが検出され、洗浄処理前の汚れがそのまま残っていることがわかった。 Thereafter, the glass plate was further ultrasonically washed with distilled water for 20 minutes, and the surface of the glass plate was again observed with a scanning electron microscope (SEM), and dispersive X-ray analysis (EDX) was performed. An image obtained with an electron microscope is shown in FIG. 4, and it was found that the cleaning treatment did not remove stains such as fibrous substances that were thought to be derived from the interleaf paper. In addition, as a result of the distributed X-ray analysis, C, H, N, and O spectra were detected, and it was found that the dirt before the cleaning treatment remained as it was.
以上の実施例からも明らかなように、本発明によれば古紙を利用できるので製造コストを低減することができ、また、表面にフッ素コーティング皮膜があるので、古紙に含まれた不純物がガラス板側へ転写されて汚れを発生させるのを低減することができることとなる。更には、汚れが生じたとしても、その汚れをフッ素の疎水性を利用してガラス板表面から剥離するようにしたので、簡単な浄化処理によって確実に除去できるという優れた効果を奏することができ、ガラス用合紙に古紙の利用を実現するという新たな道を開くものである。
As is clear from the above examples, according to the present invention, the waste paper can be used, so that the manufacturing cost can be reduced, and since the surface has a fluorine coating film, impurities contained in the waste paper can be removed from the glass plate. It is possible to reduce the occurrence of contamination due to transfer to the side. Furthermore, even if dirt is generated, the dirt is peeled off from the surface of the glass plate using the hydrophobicity of fluorine, so that an excellent effect can be obtained that it can be reliably removed by a simple purification treatment. This opens up a new way to realize the use of waste paper for glass interleaving paper.
Claims (2)
When the glass interleaving paper according to claim 1 is inserted between each laminated glass plate and transported, stored, or handled, impurities contaminated from the glass interleaving paper are transferred to the glass plate with fluorine. A glass plate characterized by being adhered to the surface of the glass plate in an intervening state, and then, when washed with water, the dirt is peeled off from the surface of the glass plate using the hydrophobicity of fluorine and washed away. How to remove dirt attached to the surface.
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