JP6303102B2 - Glass slip paper and its manufacturing method - Google Patents
Glass slip paper and its manufacturing method Download PDFInfo
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- JP6303102B2 JP6303102B2 JP2013251650A JP2013251650A JP6303102B2 JP 6303102 B2 JP6303102 B2 JP 6303102B2 JP 2013251650 A JP2013251650 A JP 2013251650A JP 2013251650 A JP2013251650 A JP 2013251650A JP 6303102 B2 JP6303102 B2 JP 6303102B2
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- 239000011521 glass Substances 0.000 title claims description 59
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000000758 substrate Substances 0.000 claims description 36
- -1 ester compounds Chemical class 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 22
- 229920006395 saturated elastomer Polymers 0.000 claims description 18
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 claims description 16
- 239000010893 paper waste Substances 0.000 claims description 15
- 239000012535 impurity Substances 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- 238000007639 printing Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 description 9
- 238000011109 contamination Methods 0.000 description 7
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000004433 infrared transmission spectrum Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000000411 transmission spectrum Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 206010027146 Melanoderma Diseases 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 230000000414 obstructive effect Effects 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
Landscapes
- Buffer Packaging (AREA)
- Packaging Frangible Articles (AREA)
- Paper (AREA)
Description
本発明は、高度な表面性が要求されるガラス基板の間に挿入して傷付き等の発生を防ぐことができるガラス用合紙とその製造方法に関するものである。 The present invention relates to a glass interleaving paper that can be inserted between glass substrates that require a high degree of surface properties to prevent the occurrence of scratches and the like, and a method for producing the same.
従来から、液晶ディスプレイや太陽光発電用パネル等に用いられるガラス基板は、異物の付着や傷のない高度な表面性が要求されている。このため、前記ガラス基板を運搬、保管、荷役等する際には、複数枚重ね合わせた各ガラス基板の間にガラス用合紙を挿入し、ガラス基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、例えば、特許文献１、２に示されるように種々のものが提案されている。 Conventionally, a glass substrate used for a liquid crystal display, a panel for photovoltaic power generation, or the like has been required to have a high degree of surface property without adhesion of foreign substances or scratches. For this reason, when carrying, storing, and handling the glass substrate, a glass interleaf is inserted between each of the glass substrates stacked to prevent the generation of scratches due to contact between the glass substrates. . As such a slip sheet for glass, for example, various ones have been proposed as shown in Patent Documents 1 and 2.
一方、液晶ディスプレイや太陽光発電用パネル等の需要の高まりやガラス基板の大型化等に伴い、合紙の需要も多くなってきており、コスト削減の観点から安価な古紙や再生紙を利用してコストの低減を図ることが検討されている。
しかし、古紙や再生紙を用いた場合は、古紙中に含まれている汚れや印刷インクや粘着性異物等の不純物が合紙からガラス基板側へ転写され、ガラス基板表面の汚れを発生させるという現象が生じた。そのため、品質を確保するには古紙や再生紙の利用をやめ、高品質なパルプ原料のみからなる紙を用いることが望ましいのであるが、コスト高になるという問題があった。
On the other hand, with the growing demand for liquid crystal displays and photovoltaic power generation panels, and the increase in the size of glass substrates, the demand for slip sheets has increased. From the viewpoint of cost reduction, inexpensive waste paper and recycled paper are used. Therefore, it is considered to reduce the cost.
However, when used paper or recycled paper is used, impurities such as used paper and impurities such as printing ink and sticky foreign matter are transferred from the interleaf to the glass substrate side, causing stain on the glass substrate surface. A phenomenon occurred. Therefore, in order to ensure quality, it is desirable to stop using used paper and recycled paper and to use paper made only of high-quality pulp raw materials, but there is a problem that the cost increases.
また、前記粘着性異物の不純物については、古紙を利用した場合に、粘着テープ等の完全に固化されていない粘着成分が粘着ピッチ異物として合紙中に分散され、微細欠陥を発生させる原因の一つになっているとの指摘がある（特許文献３を参照）。
しかしながら、特許文献３では、単に、粘着ピッチ異物の含有密度を所定値以下にすると微細欠陥の発生を防止できるとの記載があるに過ぎず、粘着ピッチ異物を除去する具体的な方法については何ら記載がなく、その示唆もない。
As for the impurities of the adhesive foreign matter, when used paper is used, adhesive components that are not completely solidified, such as adhesive tape, are dispersed in the interleaf as adhesive pitch foreign matter, which is one of the causes of causing fine defects. There is an indication that it is connected (see Patent Document 3).
However, Patent Document 3 merely describes that the occurrence of fine defects can be prevented by setting the content density of the adhesive pitch foreign matter to a predetermined value or less, and there is no specific method for removing the adhesive pitch foreign matter. There is no description and no suggestion.
このように、古紙や再生紙を利用して合紙を安価に製造することと、合紙中から有機系の汚れ成分を出さないようにすることとは相矛盾しており、現時点では両者を満足できる合紙の製造方法は提案されていないのが現状である。
従って、古紙や再生紙を利用して合紙を安価に製造することができ、しかも合紙中から有機系の汚れ成分を出さないようにしてガラス基板へ有機系の汚れが転写するのを確実に防止できる新たな技術の開発が望まれていた。
As described above, there is a contradiction between producing waste paper at low cost using waste paper and recycled paper, and preventing organic stains from coming out of the slip paper. At present, no satisfactory method for producing slip sheets has been proposed.
Therefore, it is possible to manufacture slip sheets at low cost by using waste paper and recycled paper, and to ensure that organic stains are transferred to the glass substrate without generating organic stain components from the slip sheets. The development of a new technology that can prevent this problem has been desired.
本発明者は、古紙や再生紙を用いた場合、合紙からガラス基板へ転写される有機系の汚れの成分には、脂肪族炭化水素化合物、鎖状飽和エステル化合物、不飽和エステル化合物が含まれていることを解明した。そして、この脂肪族炭化水素化合物、鎖状飽和エステル化合物、不飽和エステル化合物に、何らかのエネルギーを付与して分解すれば、転写による汚れの付着が減少することを究明し、本発明を完成するに至ったのである。 The present inventor uses an aliphatic hydrocarbon compound, a chain saturated ester compound, and an unsaturated ester compound as components of organic stains transferred from a slip sheet to a glass substrate when used paper or recycled paper is used. It was clarified that it is. Then, by investigating the aliphatic hydrocarbon compound, the chain saturated ester compound, and the unsaturated ester compound by applying some energy to decompose, the inventors investigated that the adhesion of dirt due to transfer is reduced, and completed the present invention. It has come.
本発明は上記理論に基づき、従来の問題点を解決して、古紙や再生紙を利用して合紙を安価に製造することができ、しかも合紙中から有機系の汚れ成分を出さないようにしてガラス基板へ汚れが転写するのを防止することができるガラス用合紙とその製造を提供することを目的とするものである。 Based on the above theory, the present invention solves the conventional problems, makes it possible to produce slip sheets at low cost by using waste paper and recycled paper, and prevents organic stain components from coming out of the slip sheets. Thus, it is an object of the present invention to provide a slip sheet for glass capable of preventing transfer of dirt onto a glass substrate and its production.
上記課題を解決するためになされた請求項１に係る発明は、古紙や再生紙を含有する素材を利用したガラス用合紙であって、前記素材に対し紫外線照射処理を施し、素材中にある脂肪族炭化水素化合物、鎖状飽和エステル化合物、不飽和エステル化合物をアモルファス物質に分解して、古紙や再生紙中に含まれている汚れや印刷インク、粘着性異物等の不純物が合紙からガラス基板へ転写されることを減少させたことを特徴とするガラス用合紙である。 The invention according to claim 1, which has been made to solve the above-mentioned problems, is a glass interleaving paper using a material containing waste paper or recycled paper, and the material is subjected to ultraviolet irradiation treatment and is in the material. Aliphatic hydrocarbon compounds, chain saturated ester compounds and unsaturated ester compounds are decomposed into amorphous substances, and impurities such as dirt, printing ink, and sticky foreign substances contained in waste paper and recycled paper are removed from the interleaf. A glass interleaving paper characterized in that transfer to a substrate is reduced.
また、請求項２に係る発明は、古紙や再生紙を含有する素材を利用したガラス用合紙の製造方法であって、前記素材に対し紫外線照射処理を施すことにより、素材中にある脂肪族炭化水素化合物、鎖状飽和エステル化合物、不飽和エステル化合物をアモルファス物質に分解して、ガラス基板への転写を減らすようにしたことを特徴とするガラス用合紙の製造方法である。 Further, the invention according to claim 2 is a method for producing a glass interleaving paper using a material containing used paper or recycled paper, and the aliphatic material in the material is obtained by subjecting the material to ultraviolet irradiation treatment. A glass interleaving paper manufacturing method characterized by decomposing a hydrocarbon compound, a chain saturated ester compound, and an unsaturated ester compound into an amorphous material to reduce transfer to a glass substrate.
前記紫外線照射処理を、波長が１５０〜５００ｎｍの紫外線により行うことが好ましく、これを請求項３に係る発明とする。 The ultraviolet irradiation treatment is preferably performed with ultraviolet rays having a wavelength of 150 to 500 nm, which is an invention according to claim 3.
請求項１に係る発明では、古紙や再生紙を含有する素材を利用したガラス用合紙であって、前記素材に対し紫外線照射処理を施し、素材中にある脂肪族炭化水素化合物、鎖状飽和エステル化合物、不飽和エステル化合物を分解して、古紙や再生紙中に含まれている汚れや印刷インク、粘着性異物等の不純物が合紙からガラス基板へ転写されることを減少させたので、素材原料に古紙や再生紙を利用しても、汚れ等が合紙からガラス基板へ転写することが少なくなる。 The invention according to claim 1 is a glass interleaving paper using a raw material containing recycled paper or recycled paper, wherein the raw material is subjected to an ultraviolet irradiation treatment, an aliphatic hydrocarbon compound contained in the raw material, chain saturation Since the ester compound and unsaturated ester compound are decomposed, impurities such as dirt, printing ink, and sticky foreign matter contained in waste paper and recycled paper are reduced from being transferred to the glass substrate. Even when used paper or recycled paper is used as a raw material, dirt or the like is less likely to be transferred from the slip sheet to the glass substrate.
請求項２に係る発明では、古紙や再生紙を含有する素材を利用したガラス用合紙の製造方法であって、前記素材に対し紫外線照射処理を施すことにより、素材中にある脂肪族炭化水素化合物、鎖状飽和エステル化合物、不飽和エステル化合物を分解して、ガラス基板への転写を減らすようにしたので、汚れ等が合紙からガラス基板へ転写することが少ない合紙を効率よく安価に生産できることとなる。 In the invention which concerns on Claim 2, it is a manufacturing method of the interleaving paper for glass using the raw material containing recycled paper or a recycled paper, Comprising: The aliphatic hydrocarbon which exists in a raw material by performing an ultraviolet irradiation process with respect to the said raw material The compound, chain saturated ester compound, and unsaturated ester compound are decomposed to reduce the transfer to the glass substrate, so the slip sheet is less likely to transfer from the slip sheet to the glass substrate. It can be produced.
請求項３に係る発明では、波長が１５０〜５００ｎｍの紫外線により、脂肪族炭化水素化合物、鎖状飽和エステル化合物、不飽和エステル化合物を効率よく分解することができる。また、紫外線の波長に巾があるため、特定波長の紫外線ランプだけでなく、例えば種々の波長を含む水銀灯なども照射源として用いることができる。 In the invention which concerns on Claim 3, an aliphatic hydrocarbon compound, a chain | strand-shaped saturated ester compound, and an unsaturated ester compound can be decompose | disassembled efficiently with the ultraviolet-ray whose wavelength is 150-500 nm. In addition, since there is a range of wavelengths of ultraviolet rays, not only ultraviolet lamps having specific wavelengths but also mercury lamps containing various wavelengths can be used as the irradiation source.
以下に、本発明の好ましい実施の形態を示す。
本発明は、古紙や再生紙を含有する素材を利用したガラス用合紙であって、前記素材に対し紫外線照射処理を施し、素材中にある脂肪族炭化水素化合物、鎖状飽和エステル化合物、不飽和エステル化合物を分解して、古紙や再生紙中に含まれている汚れや印刷インク、粘着性異物等の不純物が合紙からガラス基板へ転写されることを減少させたことを特徴とするガラス用合紙とその製造方法である。
前記古紙や再生紙は、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。これらの古紙や再生紙を利用した場合は、インク由来の鉱油成分や自然分解で生じるリグノセルロース成分由来の有機系成分からなる不純物の汚れが発生し、これがガラス基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や再生紙を利用することの阻害要因となっていた。
なお、前記古紙や再生紙の使用量は１００％でもよいし、バージンパルプに対し任意の量だけ添加してもよい。
Hereinafter, preferred embodiments of the present invention will be described.
The present invention is an interleaving paper for glass using a material containing waste paper or recycled paper, wherein the material is subjected to ultraviolet irradiation treatment, and the aliphatic hydrocarbon compound, chain saturated ester compound, A glass characterized by decomposing a saturated ester compound to reduce the transfer of impurities such as dirt, printing ink, and adhesive foreign matter contained in waste paper and recycled paper from the interleaf to the glass substrate Interleaf paper and its manufacturing method.
The waste paper and recycled paper are typified by newspaper waste paper, various printed waste papers, various paper container waste papers, and the like, and are intended for all waste papers used as pulp waste papers. When these waste paper and recycled paper are used, impurities such as mineral oil components derived from ink and organic components derived from lignocellulosic components generated by natural decomposition are generated and transferred to a glass substrate to generate the contamination. It is said. And the generation | occurrence | production of the said stain | pollution | contamination became the obstructive factor of utilizing a used paper and a recycled paper as a raw material of the paper for glass.
The used amount of the used paper or recycled paper may be 100%, or an arbitrary amount may be added to the virgin pulp.
本発明者は、前記の合紙からガラス基板へ転写されて付着する有機系の汚れについて、その成分を分析した。この分析に用いる資料は、以下の手順で作製した。
（１）使用済みのガラス用合紙（長良製紙株式会社製の合紙：商品名「Kirari S」）を、ジエチルエーテルを用いたソックスレー法により樹脂成分を抽出する。
（２）抽出液を、Ｓｉ基板に塗布する。
（３）基板の水分を蒸発して、基板上に成分を乾固させて試料とする。
This inventor analyzed the component about the organic stain | pollution | contamination transferred and attached to the glass substrate from the said interleaving paper. The material used for this analysis was prepared by the following procedure.
(1) Resin components are extracted from used glass slip paper (interleaf made by Nagara Paper Co., Ltd .: trade name “Kirari S”) by the Soxhlet method using diethyl ether.
(2) The extract is applied to the Si substrate.
(3) The moisture of the substrate is evaporated to dry the components on the substrate to obtain a sample.
作製した試料を、フーリエ変換赤外吸収分光法（ＦＴ−ＩＲ）により成分分析した。この分析により得られた樹脂成分の赤外線透過スペクトルを図１に示す。このグラフより、以下のことが解析できた。
（i）波長２９２５ｃｍ−１、２８５３ｃｍ−１にメチレン基のＣ−Ｈ伸縮振動が見られる。
波長１４６０ｃｍ−１にメチレン基のＣ−Ｈ変角振動が見られる。
波長２９５３ｃｍ−１メチル基のＣ−Ｈ伸縮振動が見られる。
波長１３７７ｃｍ−１にメチル基のＣ−Ｈ対称変角振動が見られる。
波長７２２ｃｍ−１に直鎖のメチレン基の面内変角振動が見られる。
以上のことから、汚れ成分として脂肪族炭化水素化合物が推察できる。
（ii）波長１７４４ｃｍ−１に鎖状飽和エステルの＞Ｃ＝Ｏ伸縮振動が見られる。
波長１１６６ｃｍ−１及び１０９９ｃｍ−１に鎖状飽和エステルのＣ−Ｏ逆対称伸縮振動が見られる。
波長１７０９ｃｍ−１に不飽和エステルの＞Ｃ＝Ｏ伸縮振動が見られる。
波長１２４１ｃｍ−１に不飽和エステルのＣ−Ｏ伸縮振動が見られる。
以上のことから、汚れ成分として鎖状飽和エステル化合物と不飽和エステル化合物が推察できる。
（iii）また、使用済みのガラス用合紙（前述の合紙：商品名「Kirari S」）に付着した目視で確認できる黒い点状の汚れ物質について、フーリエ変換赤外吸収分光法により成分分析した結果も、同様の赤外線透過スペクトルが得られた。
以上のことから、合紙からガラス基板へ転写されて付着する有機系の汚れは、脂肪族炭化水素化合物、鎖状飽和エステル化合物、不飽和エステル化合物であると推察した。
The prepared sample was subjected to component analysis by Fourier transform infrared absorption spectroscopy (FT-IR). The infrared transmission spectrum of the resin component obtained by this analysis is shown in FIG. From this graph, the following could be analyzed.
(I) Methylene group C—H stretching vibrations are observed at wavelengths of 2925 cm −1 and 2853 cm −1 .
C-H bending vibration of a methylene group is observed at a wavelength of 1460 cm- 1 .
A C—H stretching vibration having a wavelength of 2953 cm −1 methyl group is observed.
A C—H symmetrical bending vibration of a methyl group is observed at a wavelength of 1377 cm −1 .
An in-plane bending vibration of a linear methylene group is observed at a wavelength of 722 cm −1 .
From the above, an aliphatic hydrocarbon compound can be inferred as a soil component.
(Ii)> C═O stretching vibration of a chain saturated ester is observed at a wavelength of 1744 cm −1 .
C—O reverse symmetric stretching vibrations of chain saturated esters are observed at wavelengths of 1166 cm −1 and 1099 cm −1 .
The> C═O stretching vibration of the unsaturated ester is observed at a wavelength of 1709 cm −1 .
C—O stretching vibration of unsaturated ester is observed at a wavelength of 1241 cm −1 .
From the above, chain saturated ester compounds and unsaturated ester compounds can be inferred as soil components.
(Iii) In addition, component analysis is performed by Fourier transform infrared absorption spectroscopy on black spot-like soiled substances that can be visually confirmed attached to the used glass slip sheet (the aforementioned slip sheet: “Kirari S”). As a result, a similar infrared transmission spectrum was obtained.
From the above, it was inferred that the organic soil transferred and adhered from the slip sheet to the glass substrate was an aliphatic hydrocarbon compound, a chain saturated ester compound, and an unsaturated ester compound.
前記推察から本発明者は、汚れの要因となる脂肪族炭化水素化合物、鎖状飽和エステル化合物、不飽和エステル化合物を合紙からなくせば、合紙からガラス基板へ転写される有機系の汚れの付着量を消滅、あるいは減少できると考えた。
そして、古紙や再生紙を含有する素材に対し、紫外線照射処理を施すことにより、素材中に含まれる脂肪族炭化水素化合物、鎖状飽和エステル化合物、不飽和エステル化合物を分解し、これにより合紙表面からガラス基板へ転写される汚れを低減させることに成功したのである。
From the above inference, the present inventor has found that the organic hydrocarbon transferred from the interleaving paper to the glass substrate is eliminated by removing the aliphatic hydrocarbon compound, chain saturated ester compound, and unsaturated ester compound that cause soiling from the interleaving paper. We thought that the amount of adhesion could be eliminated or reduced.
The material containing waste paper or recycled paper is subjected to ultraviolet irradiation treatment to decompose the aliphatic hydrocarbon compound, chain saturated ester compound, and unsaturated ester compound contained in the material, thereby interleaving the paper. It succeeded in reducing dirt transferred from the surface to the glass substrate.
次に、紫外線照射処理につき説明する。
前述と同様にして得た試料に対し、紫外線照射処理を施した。紫外線照射による各成分への影響の評価方法として、前述のフーリエ変換赤外吸収分光法（ＦＴ−ＩＲ）を用いた。紫外線の光源としては、波長が１７２ｎｍのエキシマランプ（ウシオ電機株式会社製）を用い、照射時間は２秒と１０分の２種類とした。
図２に、波数が２６００〜３２００ｃｍ−１の領域における赤外線透過スペクトルの変化を示す。また、図３に、波数が１４００〜２０００ｃｍ−１の領域における赤外線透過スペクトルの変化を示す。
Next, the ultraviolet irradiation process will be described.
A sample obtained in the same manner as described above was subjected to ultraviolet irradiation treatment. The Fourier transform infrared absorption spectroscopy (FT-IR) described above was used as a method for evaluating the influence of ultraviolet irradiation on each component. As an ultraviolet light source, an excimer lamp (manufactured by USHIO INC.) Having a wavelength of 172 nm was used, and the irradiation time was 2 seconds and 2/10.
FIG. 2 shows changes in the infrared transmission spectrum in the region where the wave number is 2600 to 3200 cm −1 . FIG. 3 shows the change in infrared transmission spectrum in the region where the wave number is 1400 to 2000 cm −1 .
図２から、紫外線照射した試料では、脂肪族炭化水素化合物に起因するＣ−Ｈ伸縮振動が、紫外線照射なしの試料と比較して消滅あるいは減少しているのが確認できた。このことから、紫外線照射により脂肪族炭化水素化合物がアモルファス物質へ分解されたと推察することができる。
同様に、図３から、紫外線照射した試料では、エステル化合物に起因する＞Ｃ＝Ｏ伸縮振動が、紫外線照射なしの試料と比較して消滅あるいは減少しているのが確認できた。
From FIG. 2, it was confirmed that in the sample irradiated with ultraviolet rays, the C—H stretching vibration caused by the aliphatic hydrocarbon compound disappeared or decreased as compared with the sample without ultraviolet irradiation. From this, it can be inferred that the aliphatic hydrocarbon compound was decomposed into an amorphous substance by ultraviolet irradiation.
Similarly, from FIG. 3, it was confirmed that in the sample irradiated with ultraviolet light,> C═O stretching vibration caused by the ester compound disappeared or decreased compared to the sample without ultraviolet irradiation.
以上のことから、紫外線照射により鎖状飽和エステル化合物、不飽和エステル化合物がアモルファス物質へ分解されて、汚れの発生要因が消滅あるいは減少し、転写に起因する汚れの発生が防止できたと推察することができる。
また、２秒間と１０分間の紫外線照射の結果から、赤外線透過スペクトル形状に大きな変化は見られず、照射時間は２秒以上あればよいことが確認できた。
From the above, it is presumed that chain saturated ester compounds and unsaturated ester compounds were decomposed into amorphous substances by ultraviolet irradiation, and the cause of contamination disappeared or decreased, and the occurrence of contamination due to transfer could be prevented. Can do.
Further, from the results of ultraviolet irradiation for 2 seconds and 10 minutes, it was confirmed that there was no significant change in the shape of the infrared transmission spectrum, and that the irradiation time should be 2 seconds or longer.
前記エキシマランプによる紫外線照射の他、水銀灯による照射処理でも同様の効果を得られることが確認できた。水銀灯は、単一の波長の紫外線だけでなく、５００ｎｍ以下の様々な波長の紫外線を含むことから、波長が１５０〜５００ｎｍの紫外線により照射を行えることがわかった。 It was confirmed that the same effect can be obtained not only by the ultraviolet irradiation by the excimer lamp but also by the irradiation treatment by the mercury lamp. Since the mercury lamp includes not only ultraviolet rays having a single wavelength but also ultraviolet rays having various wavelengths of 500 nm or less, it has been found that irradiation can be performed with ultraviolet rays having a wavelength of 150 to 500 nm.
図４は、照射光源、照射距離、照射時間を変化させ紫外線を照射した合紙をガラス基板に押し当てたときのガラス基板上に転写された汚れ面積と、紫外線照射積算エネルギーとの関係を示すグラフであり、汚れ面積の紫外線照射積算エネルギーへの依存性がわかる。
未処理の合紙をガラス基板に押し当てたときの汚れ面積を１００％としたが、紫外線照射により汚れ面積が減少することが確認できた。また、汚れ面積の減少率は、使用する光源によって異なることも確認できた。
FIG. 4 shows the relationship between the contamination area transferred on the glass substrate and the ultraviolet irradiation integrated energy when the interleaving paper irradiated with ultraviolet rays by changing the irradiation light source, irradiation distance, and irradiation time is pressed against the glass substrate. It is a graph, and the dependence of the dirt area on the UV irradiation integrated energy can be seen.
The stain area when the untreated interleaving paper was pressed against the glass substrate was taken as 100%, but it was confirmed that the stain area was reduced by ultraviolet irradiation. It was also confirmed that the reduction rate of the dirty area was different depending on the light source used.
以上のように、有機系成分の汚れを含んだ素材に対し紫外線照射処理を施すことにより、素材中にある脂肪族炭化水素化合物、鎖状飽和エステル化合物、不飽和エステル化合物をアモルファス物質へ分解することができ、この結果、ガラス基板に押し付けた時に転写される合紙表面の有機系汚れを、簡単かつ効率よく消滅あるいは低減したものとすることができることとなる。 As described above, by subjecting a material containing organic component contamination to ultraviolet irradiation, the aliphatic hydrocarbon compound, chain saturated ester compound, and unsaturated ester compound in the material are decomposed into an amorphous material. As a result, organic stains on the surface of the slip sheet transferred when pressed against the glass substrate can be easily and efficiently eliminated or reduced.
なお、以上の説明では合紙を用いる対象としてガラス基板と表現したが、このガラス基板は運搬、保管、荷役等する際に、複数枚重ね合わせた各ガラス基板の間に、傷付き防止のためにガラス用合紙が挿入されるあらゆるガラス製品を意味するものである。例えば、液晶用やプラズマ用や有機ＥＬ用のディスプレイ、タッチパネル用のガラスカバー、太陽光発電用のガラスカバーやガラス基板、自動車等のフロント、リア、サイド用ガラス等、及びこれらに類する全てのガラス製品を含んでいる。 In the above description, the glass substrate is expressed as a target to use the slip sheet, but this glass substrate is used to prevent scratches between the stacked glass substrates when transporting, storing, handling, etc. Any glass product into which a slip sheet for glass is inserted is meant. For example, liquid crystal displays, plasma displays, organic EL displays, touch panel glass covers, photovoltaic power generation glass covers and glass substrates, automobile front and rear, side glass, etc., and all similar glasses Includes products.
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