JP6976090B2 - Transparent olefin resin sheet and files made of it - Google Patents
Transparent olefin resin sheet and files made of it Download PDFInfo
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- JP6976090B2 JP6976090B2 JP2017130714A JP2017130714A JP6976090B2 JP 6976090 B2 JP6976090 B2 JP 6976090B2 JP 2017130714 A JP2017130714 A JP 2017130714A JP 2017130714 A JP2017130714 A JP 2017130714A JP 6976090 B2 JP6976090 B2 JP 6976090B2
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- 229920005672 polyolefin resin Polymers 0.000 title claims description 56
- 230000003746 surface roughness Effects 0.000 claims description 48
- 239000002216 antistatic agent Substances 0.000 claims description 19
- 229920005989 resin Polymers 0.000 description 18
- 239000011347 resin Substances 0.000 description 18
- 238000007639 printing Methods 0.000 description 11
- -1 polypropylene Polymers 0.000 description 8
- 239000004743 Polypropylene Substances 0.000 description 7
- 229920001155 polypropylene Polymers 0.000 description 7
- 150000001336 alkenes Chemical class 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 6
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 6
- 229920005673 polypropylene based resin Polymers 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007645 offset printing Methods 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 229920000092 linear low density polyethylene Polymers 0.000 description 2
- 239000004707 linear low-density polyethylene Substances 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011342 resin composition Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229920001651 Cyanoacrylate Polymers 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerol Natural products OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- MWCLLHOVUTZFKS-UHFFFAOYSA-N Methyl cyanoacrylate Chemical compound COC(=O)C(=C)C#N MWCLLHOVUTZFKS-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920005670 poly(ethylene-vinyl chloride) Polymers 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 150000003902 salicylic acid esters Chemical class 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 150000003458 sulfonic acid derivatives Chemical class 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
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Description
本発明は、透明オレフィン系樹脂シート及びそれよりなる書類や写真等を簡便にファイリングすることのできるファイルに関する。 The present invention relates to a transparent olefin resin sheet and a file in which documents, photographs and the like can be easily filed.
従来から、書類や写真等を簡便にファイリングするためにファイルやバインダーが広く使用されている。これらファイルやバインダーは透明の合成樹脂シートを積層し、一側端部、一側端部と底部又は両側端部と底部を閉塞して書類等を収納可能に形成されており、収納された書類を取り出すことなく外部から容易に視認できる、所謂、クリアファイルやクリアバインダーである。 Traditionally, files and binders have been widely used for easy filing of documents, photographs and the like. These files and binders are formed by laminating transparent synthetic resin sheets and closing one side end, one side end and bottom, or both side ends and bottom so that documents can be stored. It is a so-called clear file or clear binder that can be easily visually recognized from the outside without taking out.
上記合成樹脂シートは透明なので外表面を平滑にし、内表面には、書類等を収納し易く取り出しやすくしたり、宣伝や見栄えをよくする目的で印刷を施せるようにするために微細凹凸加工することが提案されている（例えば、特許文献１、２、３参照。）。
Since the synthetic resin sheet is transparent, the outer surface should be smooth, and the inner surface should be finely uneven so that documents can be easily stored and taken out, and printing can be applied for the purpose of promotion and appearance. Have been proposed (see, for example,
しかしながら、上記合成樹脂シートは、一般に、ポリエチレン系樹脂、ポリプロピレン系樹脂等のオレフィン系樹脂からなるシートであるから、保存時に帯電が発生する。又、使用や加工時にも剥離帯電や打ち抜き加工帯電が発生し、重ね合されたシ−トやその製品、特に、平滑面同士が重ね合わされたシ−トやその製品は剥離が困難になって流れにくくなったりブロッキング現象を引き起こしたりした。更に、印刷時には静電気により印刷インキがはじかれ印刷不良が発生することがあった。 However, since the synthetic resin sheet is generally a sheet made of an olefin resin such as a polyethylene resin or a polypropylene resin, charging is generated during storage. In addition, peeling charge and punching charge are generated during use and processing, which makes it difficult to peel off the superimposed sheets and their products, especially the sheets and their products in which smooth surfaces are overlapped with each other. It became difficult to flow and caused a blocking phenomenon. Further, at the time of printing, the printing ink may be repelled by static electricity and printing defects may occur.
これらの欠点を改良するために、オレフィン系樹脂には帯電防止剤が添加されているが、少量では帯電防止効果が小さく、多量になると帯電防止剤がシート表面にブリードして白化するという欠点があった。又、少量であっても、シートを長期間、特に高温高湿下で保存した場合は帯電防止剤がシート表面にブリードして白化する可能性があり、夏場の高温多湿下での在庫や貨物船等で長時間かかり高温になるコンテナ輸送することは困難であった。又、印刷等の二次加工が可能であっても、印刷及び二次加工した後、製品としての在庫も困難であった。 An antistatic agent is added to the olefin resin in order to improve these drawbacks, but there is a drawback that the antistatic effect is small when the amount is small, and the antistatic agent bleeds to the sheet surface and whitens when the amount is large. there were. In addition, even if the amount is small, if the sheet is stored for a long period of time, especially under high temperature and high humidity, the antistatic agent may bleed on the sheet surface and whiten, so inventory and cargo under high temperature and high humidity in summer may occur. It was difficult to transport containers that took a long time and became hot by ship. Further, even if secondary processing such as printing is possible, it is difficult to stock the product after printing and secondary processing.
本発明の目的は、上記問題点に鑑み、少なくとも一面が平滑面である透明オレフィン系樹脂シートであって、帯電防止剤の含有量が少なくても保存時や加工時に帯電しにくく、重ね合わせても剥離しやすく流れ性が優れており、ブロッキング現象を引き起こさないので、加工性、印刷性等が優れており、且つ、高温高湿下で長期間保存可能であり、使用可能期間が長い透明オレフィン系樹脂シート及びそれよりなるファイルを提供することにある。 In view of the above problems, an object of the present invention is a transparent olefin resin sheet having at least one smooth surface, and even if the content of the antistatic agent is small, it is difficult to be charged during storage or processing, and the sheets are overlapped with each other. A transparent olefin that is easy to peel off and has excellent flowability and does not cause a blocking phenomenon, so it has excellent workability, printability, etc., can be stored for a long time under high temperature and high humidity, and can be used for a long period of time. The purpose is to provide a based resin sheet and a file made of the same.
即ち、本発明は、
［１］少なくとも一面が、高さ１．０μｍ未満の微細凹凸を有し、ＪＩＳ Ｂ ０６０１に準拠して表面粗さ計で測定した表面粗さ（Ｒａ）が０．１μｍ未満の平滑面であることを特徴とする透明オレフィン系樹脂シート、
［２］他面が、ＪＩＳ Ｂ ０６０１に準拠して表面粗さ計で測定した表面粗さ（Ｒａ）が０．１μｍ以上のマット面であることを特徴とする上記［１］記載の透明オレフィン系樹脂シート、
［３］マット面の表面粗さ（Ｒａ）が０．１〜５．０μｍであることを特徴とする上記［２］記載の透明オレフィン系樹脂シート、
［４］ヘイズ値が３５％以下であることを特徴とする上記［１］〜［３］のいずれか１項記載の透明オレフィン系樹脂シート、
［５］ オレフィン系樹脂１００重量部と帯電防止剤０．１重量部以下とからなることを特徴とする上記［１］〜［４］のいずれか１項記載の透明オレフィン系樹脂シート、及び、
［６］表面シートと裏面シートが積層され、その一側端部、一側端部と底部又は両側端部と底部が閉塞されて収納可能に形成されているファイルであって、表面シートと裏面シートの少なくとも一方が上記［１］〜［５］のいずれか１項記載の透明オレフィン系樹脂シートであり、高さ１．０μｍ未満の微細凹凸を有し、ＪＩＳ Ｂ ０６０１に準拠して表面粗さ計で測定した表面粗さ（Ｒａ）が０．１μｍ未満の平滑面が外側になるように積層されていることを特徴とするファイル
に関する。
That is, the present invention
[1] At least one surface is a smooth surface having fine irregularities having a height of less than 1.0 μm and having a surface roughness (Ra) of less than 0.1 μm measured by a surface roughness meter according to JIS B 0601. A transparent olefin resin sheet, characterized by
[2] The transparent olefin according to the above [1], wherein the other surface is a matte surface having a surface roughness (Ra) of 0.1 μm or more measured by a surface roughness meter in accordance with JIS B 0601. System resin sheet,
[3] The transparent olefin resin sheet according to the above [2], wherein the surface roughness (Ra) of the matte surface is 0.1 to 5.0 μm.
[4] The transparent olefin resin sheet according to any one of the above [1] to [3], wherein the haze value is 35% or less.
[5] The transparent olefin resin sheet according to any one of [1] to [4] above, which comprises 100 parts by weight of an olefin resin and 0.1 part by weight or less of an antistatic agent.
[6] A file in which a front surface sheet and a back surface sheet are laminated, and one side end portion, one side end portion and the bottom portion, or both side end portions and the bottom portion are closed so as to be storable. At least one of the sheets is the transparent olefin resin sheet according to any one of the above [1] to [5], has fine irregularities with a height of less than 1.0 μm, and has a rough surface in accordance with JIS B 0601. The present invention relates to a file characterized in that smooth surfaces having a surface roughness (Ra) of less than 0.1 μm measured by a gauge are laminated so as to be on the outside.
本発明の透明又は半透明オレフィン系樹脂シートの構成は上述の通りであり、帯電防止剤の含有量が少なくても保存時や加工時に帯電しにくく、重ね合わせても剥離しやすく流れ性が優れており、ブロッキング現象を引き起こさないので、加工性、印刷性等が優れており、且つ、高温高湿下で長期間保存しても帯電防止剤がブリードして白化したり印刷適性が低下することがないので、使用可能期間が長く、夏場の高温多湿下での在庫や貨物船等で長時間かかり高温になるコンテナ輸送することができる。又、印刷及び二次加工した後、製品として長期間在庫することもできる。 The structure of the transparent or translucent olefin resin sheet of the present invention is as described above. Since it does not cause a blocking phenomenon, it has excellent workability, printability, etc., and even if it is stored for a long time under high temperature and high humidity, the antistatic agent bleeds and whitens, or the printability deteriorates. Since there is no such thing, it can be used for a long period of time, and it can be transported in a container that takes a long time and becomes hot in stock under high temperature and humidity in summer or by a cargo ship. Further, after printing and secondary processing, it can be stocked as a product for a long period of time.
又、本発明の透明オレフィン系樹脂シートよりなるファイルは、製造及び印刷が容易であり、且つ、書類の収納、取り出しが容易であると共に収納された書類を外部から視認できる。 Further, the file made of the transparent olefin resin sheet of the present invention is easy to manufacture and print, and the documents can be easily stored and taken out, and the stored documents can be visually recognized from the outside.
請求項１記載の透明オレフィン系樹脂シートは、少なくとも一面が、高さ１．０μｍ未満の微細凹凸を有し、ＪＩＳ Ｂ ０６０１に準拠して表面粗さ計で測定した表面粗さ（Ｒａ）が０．１μｍ未満の平滑面であることを特徴とする。 The transparent olefin resin sheet according to claim 1 has at least one surface having fine irregularities having a height of less than 1.0 μm, and has a surface roughness (Ra) measured by a surface roughness meter in accordance with JIS B 0601. It is characterized by having a smooth surface of less than 0.1 μm.
上記オレフィン系樹脂としては、シート形成能を有し、そのシートが透明又は半透明である任意のオレフィン系樹脂が使用でき、例えば、高密度ポリエチレン樹脂、中密度ポリエチレン樹脂、低密度ポリエチレン樹脂、線状低密度ポリエチレン樹脂、ポリプロピレン樹脂、エチレン−プロピレン共重合体、エチレン−ブテン−１共重合体、エチレン−オクテン−１共重合体、エチレン−酢酸ビニル共重合体、エチレン−（メタ）アクリル酸アルキルエステル共重合体、エチレン−塩化ビニル共重合体等が挙げられ、高密度ポリエチレン樹脂及びポリプロピレン樹脂が好ましく、又、これらのポリオレフィン系樹脂は単独であってもよいし、２種類以上が併用されてもよい。 As the olefin-based resin, any olefin-based resin having a sheet-forming ability and the sheet being transparent or translucent can be used, for example, high-density polyethylene resin, medium-density polyethylene resin, low-density polyethylene resin, wire. Low density polyethylene resin, polypropylene resin, ethylene-propylene copolymer, ethylene-butene-1 copolymer, ethylene-octene-1 copolymer, ethylene-vinyl acetate copolymer, ethylene-alkyl acrylate Examples thereof include ester copolymers and ethylene-vinyl chloride copolymers, and high-density polyethylene resins and polypropylene resins are preferable, and these polyolefin resins may be used alone or in combination of two or more. May be good.
上記オレフィン系樹脂シートの表面が全く平滑で凹凸がないと重ね合わせた場合、剥離しにくく流れ性が悪く、ブロッキング性が大きくなるので、少なくとも一面が、高さ１．０μｍ未満の微細凹凸を有しており、且つ、ＪＩＳ Ｂ ０６０１に準拠して表面粗さ計で測定した表面粗さ（Ｒａ）が０．１μｍ未満の鏡面光沢を有する平滑面である。表面粗さ（Ｒａ）は、小さくなりすぎると重ね合わせた際に剥離しにくくなると共に流れにくくなり、ブロッキング現象を引き起こしやすくなるので０．０１〜０．１μｍが好ましい。この平滑面は高さ１．０μｍ未満の微細凹凸を有しているが、凹凸は微細であり、ＪＩＳ Ｂ ０６０１に準拠して表面粗さ計で測定した表面粗さ（Ｒａ）が０．１μｍ未満であって、目視ではほぼ鏡面である。 When the surface of the olefin resin sheet is completely smooth and has no irregularities, it is difficult to peel off, the flowability is poor, and the blocking property is large. Therefore, at least one surface has fine irregularities with a height of less than 1.0 μm. It is a smooth surface having a mirror surface gloss with a surface roughness (Ra) of less than 0.1 μm measured by a surface roughness meter in accordance with JIS B 0601. The surface roughness (Ra) is preferably 0.01 to 0.1 μm because if it becomes too small, it will be difficult to peel off and flow when stacked, and it will be easy to cause a blocking phenomenon. This smooth surface has fine irregularities with a height of less than 1.0 μm, but the irregularities are fine, and the surface roughness (Ra) measured by a surface roughness meter according to JIS B 0601 is 0.1 μm. It is less than, and is almost a mirror surface visually.
尚、この平滑面はほぼ鏡面であるが、高さ１．０μｍ未満の微細凹凸を有し、ＪＩＳ Ｂ ０６０１に準拠して表面粗さ計で測定した表面粗さ（Ｒａ）が０．１μｍ未満であるから印刷も可能である。 Although this smooth surface is almost a mirror surface, it has fine irregularities with a height of less than 1.0 μm, and the surface roughness (Ra) measured by a surface roughness meter according to JIS B 0601 is less than 0.1 μm. Therefore, printing is also possible.
一般に、オレフィン系樹脂シートの帯電防止のために、帯電防止剤がオレフィン系樹脂１００重量部に対し１〜３重量部添加されているが、上記オレフィン系樹脂シートは、少なくとも一面がＪＩＳ Ｂ ０６０１に準拠して表面粗さ計で測定した表面粗さ（Ｒａ）が０．１μｍ未満の平滑面であるから、剥離が容易で流れ性が優れ、ブロッキング性も小さいので、オレフィン系樹脂１００重量部に対し帯電防止剤は０．１重量部以下添加されるのが好ましく、より好ましくは０．０１重量部以下であり、更に好ましくは０．００３重量部以下である。 Generally, an antistatic agent is added in an amount of 1 to 3 parts by weight based on 100 parts by weight of an olefin resin in order to prevent antistatic of the olefin resin sheet. However, at least one surface of the olefin resin sheet is JIS B 0601. Since the surface roughness (Ra) measured by a surface roughness meter in accordance with this is a smooth surface of less than 0.1 μm, it is easy to peel off, has excellent flowability, and has low blocking property. On the other hand, the antistatic agent is preferably added in an amount of 0.1 parts by weight or less, more preferably 0.01 parts by weight or less, still more preferably 0.003 parts by weight or less.
上記帯電防止剤としては、オレフィン系樹脂シートに従来から使用されている帯電防止剤であれば特に限定されず、例えば、アルキルアミド、グリセリン脂肪酸エステル誘導体等の界面活性剤やスルホン酸誘導体、及びその混合物などが挙げられる。 The antistatic agent is not particularly limited as long as it is an antistatic agent conventionally used for an olefin resin sheet, and for example, a surfactant such as an alkylamide or a glycerin fatty acid ester derivative, a sulfonic acid derivative, and the like thereof. Examples include mixtures.
又、必要に応じて、フェノール系抗酸化剤、芳香族アミン系酸化防止剤等の酸化防止剤、サリチル酸エステル系、ベンゾフェノン系、ベンゾトリアゾール系、シアノアクリレート系等の紫外線吸収剤、ヒンダードアミン系の光安定剤、カチオン系、非イオン系等の帯電防止剤、衝撃改良剤、防曇剤、難燃剤、着色剤等が添加されてもよい。 Also, if necessary, antioxidants such as phenolic antioxidants and aromatic amine-based antioxidants, ultraviolet absorbers such as salicylic acid ester-based, benzophenone-based, benzotriazole-based and cyanoacrylate-based, and hindered amine-based light. Stabilizers, cationic and nonionic antistatic agents, impact improvers, antifogging agents, flame retardants, colorants and the like may be added.
上記オレフィン系樹脂シートの厚さは、特に限定されず、一般に０．１〜１．０ｍｍであり、ファイルの場合は０．１５〜０．５ｍｍが好ましい。又、ファイルの場合は透明性が優れているのが好ましいので、オレフィン系樹脂シートのヘイズ値は３５％以下が好ましい。 The thickness of the olefin resin sheet is not particularly limited, and is generally 0.1 to 1.0 mm, preferably 0.15 to 0.5 mm in the case of a file. Further, in the case of a file, it is preferable that the transparency is excellent, so that the haze value of the olefin resin sheet is preferably 35% or less.
上記透明オレフィン系樹脂シートの製造方法は特に限定されず、例えば、加熱軟化されているオレフィン系樹脂シートの一面に、高さ１．０μｍ未満の微細凹凸であって、ＪＩＳ Ｂ ０６０１に準拠して表面粗さ計で測定した表面粗さ（Ｒａ）が０．１μｍ未満の微細凹凸を有する微細加工ロールで加圧する賦形方法が挙げられる。 The method for producing the transparent olefin resin sheet is not particularly limited, and for example, one surface of the heat-softened olefin resin sheet has fine irregularities having a height of less than 1.0 μm and conforms to JIS B 0601. Examples thereof include a shaping method in which a surface roughness (Ra) measured by a surface roughness meter is pressed by a fine processing roll having fine irregularities of less than 0.1 μm.
上記オレフィン系樹脂シートの他面は、特に限定されず、鏡面であってもよいし、ＪＩＳ Ｂ ０６０１に準拠して表面粗さ計で測定した表面粗さ（Ｒａ）が０．１μｍ未満の平滑面であってもよい。 The other surface of the olefin resin sheet is not particularly limited and may be a mirror surface, and the surface roughness (Ra) measured by a surface roughness meter according to JIS B 0601 is smoothness of less than 0.1 μm. It may be a surface.
又、滑り性や流れ性が優れ且つ印刷適性が優れているように、他面はＪＩＳ Ｂ ０６０１に準拠して表面粗さ計で測定した表面粗さ（Ｒａ）が０．１μｍ以上の印刷が可能なマット面であるのが好ましい。 In addition, the other surface should be printed with a surface roughness (Ra) of 0.1 μm or more as measured by a surface roughness meter in accordance with JIS B 0601 so that the slipperiness and flowability are excellent and the printability is excellent. A possible matte surface is preferred.
上記透明オレフィン系樹脂シートの他面（マット面）のＪＩＳ Ｂ ０６０１に準拠して表面粗さ計で測定した表面粗さ（Ｒａ）は大きくなりすぎると印刷適性が低下するので０．１〜５．０μｍが好ましく、より好ましくは０．１〜３．０μｍである。 If the surface roughness (Ra) measured by the surface roughness meter according to JIS B 0601 on the other surface (matte surface) of the transparent olefin resin sheet becomes too large, the printability will decrease, so 0.1 to 5 It is preferably 9.0 μm, more preferably 0.1 to 3.0 μm.
印刷可能なマット面の製造方法は特に限定されず、例えば、エンボス加工、マット加工、梨地加工、ゴムロール加工、エアーナイフ加工等の賦形方法が挙げられる。 The method for producing a printable matte surface is not particularly limited, and examples thereof include shaping methods such as embossing, matting, satin finish, rubber roll processing, and air knife processing.
請求項６記載のファイルは、表面シートと裏面シートが積層され、その一側端部、一側端部と底部又は両側端部と底部が閉塞されて収納可能に形成されているファイルであって、表面シートと裏面シートの少なくとも一方が請求項１〜５のいずれか１項記載の透明オレフィン系樹脂シートであり、高さ１．０μｍ未満の微細凹凸を有し、ＪＩＳ Ｂ ０６０１に準拠して表面粗さ計で測定した表面粗さ（Ｒａ）が０．１μｍ未満の平滑面が外側になるように積層されていることを特徴とする。 The file according to claim 6 is a file in which a front surface sheet and a back surface sheet are laminated, and one side end portion, one side end portion and bottom portion, or both side end portions and bottom portion are closed so as to be storable. , At least one of the front surface sheet and the back surface sheet is the transparent olefin resin sheet according to any one of claims 1 to 5, has fine irregularities having a height of less than 1.0 μm, and conforms to JIS B 0601. It is characterized in that smooth surfaces having a surface roughness (Ra) of less than 0.1 μm measured by a surface roughness meter are laminated so as to be on the outside.
上記ファイルにおいては、表面シートと裏面シートはその一側端部と底部が閉塞され、上方及び他側端部が開放されて収納可能に形成されているが好ましいが、その一側端部のみが閉塞されて（一枚のシートが折畳まれて）書籍状になされて収納可能に形成されていてもよいし、両側端部と底部が閉塞されて袋状になされて収納可能に形成されていてもよい。 In the above file, it is preferable that the front surface sheet and the back surface sheet are formed so that one side end portion and the bottom portion thereof are closed and the upper and other side end portions are opened so that they can be stored, but only the one side end portion thereof. It may be closed (a sheet folded) into a book-like shape for storage, or it may be closed at both ends and the bottom to form a bag-like shape for storage. You may.
上記ファイルにおいては、表面シートと裏面シートの少なくとも一方が請求項１〜５のいずれか１項記載の透明オレフィン系樹脂シートであり、表面シートと裏面シートの両シート共に請求項１〜５のいずれか１項記載の透明オレフィン系樹脂シートであってもよい。又、表面シートと裏面シートは共に高さ１．０μｍ未満の微細凹凸を有し、ＪＩＳ Ｂ ０６０１に準拠して表面粗さ計で測定した表面粗さ（Ｒａ）が０．１μｍ未満の平滑面が外側になるように積層されている In the above file, at least one of the front surface sheet and the back surface sheet is the transparent olefin resin sheet according to any one of claims 1 to 5, and both the front surface sheet and the back surface sheet are any of claims 1 to 5. The transparent olefin resin sheet according to claim 1 may be used. Further, both the front surface sheet and the back surface sheet have fine irregularities with a height of less than 1.0 μm, and a smooth surface having a surface roughness (Ra) of less than 0.1 μm measured by a surface roughness meter according to JIS B 0601. Is laminated so that
次に、図面を参照して本発明のファイルを説明する。図１は、本発明のファイルの一例を示す断面図である。図中１は表面シートであり、２は裏面シートである。表面シート１と裏面シート２は透明オレフィン系樹脂よりなる略矩形のシートが折り目３により折畳まれて形成されている。
Next, the file of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing an example of a file of the present invention. In the figure, 1 is a front sheet and 2 is a back sheet. The front surface sheet 1 and the
表面シート１の外側面１１と裏面シート２の外側面２１は高さ１．０μｍ未満の微細凹凸を有し、ＪＩＳ Ｂ ０６０１に準拠して表面粗さ計で測定した表面粗さ（Ｒａ）が０．１μｍ未満の鏡面光沢を有する平滑面であり、表面シート１の内側面１２と裏面シート２の内側面２２はＪＩＳ Ｂ ０６０１に準拠して表面粗さ計で測定した表面粗さ（Ｒａ）が０．１μｍ以上のマット面である。
The outer surface 11 of the front surface sheet 1 and the outer surface 21 of the
又、表面シート１と裏面シート２の底部は熱融着され、熱融着部（図示せず）が形成されており、折り目３及び熱融着部により表面シート１と裏面シート２はその一側端部と底部が閉塞され、上方及び他側端部が開放されて収納可能に形成されている。
Further, the bottom portions of the front surface sheet 1 and the
次に、本発明の実施例を説明するが、本発明は実施例に限定されるものではない。 Next, examples of the present invention will be described, but the present invention is not limited to the examples.
（実施例１）
ＭＦＲ＝１．９ｇ／１０ｍｉｎ、融点約１６０℃のポリプロピレン樹脂（日本ポリプロ社製）１００重量部、線状低密度ポリエチレン（住友化学社製）３重量部及び帯電防止剤０．００１５重量部よりなるポリプロピレン系樹脂組成物を、スクリュー径７０ｍｍの一軸混練押出機に供給して樹脂温度２１０℃で溶融混練した後、溶融混練物を押出して厚さ０．２ｍｍのポリプロピレン系樹脂シートを得た。得られたポリプロピレン系樹脂シートを微細凹凸ロールと７５℃のエアーナイフの間に約６．０ｍ／ｍｉｎの速度で供給しプレス成形した後、８０℃でアニールして本発明の透明オレフィン系樹脂シートを得た。
(Example 1)
It consists of 100 parts by weight of polypropylene resin (manufactured by Japan Polypropylene Corporation) with MFR = 1.9 g / 10 min and melting point of about 160 ° C., 3 parts by weight of linear low-density polyethylene (manufactured by Sumitomo Chemical Co., Ltd.) and 0.0015 parts by weight of antistatic agent. The polypropylene-based resin composition was supplied to a uniaxial kneading extruder having a screw diameter of 70 mm and melt-kneaded at a resin temperature of 210 ° C., and then the melt-kneaded product was extruded to obtain a polypropylene-based resin sheet having a thickness of 0.2 mm. The obtained polypropylene-based resin sheet is supplied between a fine uneven roll and an air knife at 75 ° C. at a speed of about 6.0 m / min, press-molded, and then annealed at 80 ° C. to obtain the transparent olefin-based resin sheet of the present invention. Got
得られた透明オレフィン系樹脂シートの微細凹凸ロールで賦形された面（鏡面）は鏡面光沢を有する平滑面であり、凹凸の高さは０．５μｍであり、ＪＩＳ Ｂ ０６０１に準拠して表面粗さ計（東京精密社製、サーフコム１３０Ａ）で表面粗さ（Ｒａ）を測定したところ０．０６２μｍであった。 The surface (mirror surface) formed by the fine uneven roll of the obtained transparent olefin resin sheet is a smooth surface having a mirror gloss, the height of the unevenness is 0.5 μm, and the surface conforms to JIS B 0601. The surface roughness (Ra) was measured with a roughness meter (Surfcom 130A manufactured by Tokyo Seimitsu Co., Ltd.) and found to be 0.062 μm.
又、透明オレフィン系樹脂シートのエアーナイフで賦形された面（マット面）をＪＩＳ Ｂ ０６０１に準拠して表面粗さ計（東京精密社製、サーフコム１３０Ａ）で表面粗さ（Ｒａ）を測定したところ０．１８μｍであった。又、マット面にオフセット用インキ（ＴＯＫＡ社製）を用いてオフセット印刷したところ美麗に印刷することができた。 In addition, the surface roughness (Ra) of the transparent olefin resin sheet shaped with an air knife is measured with a surface roughness meter (Surfcom 130A, manufactured by Tokyo Seimitsu Co., Ltd.) in accordance with JIS B 0601. As a result, it was 0.18 μm. Further, when offset printing was performed on the matte surface using offset ink (manufactured by TOKA), it was possible to print beautifully.
得られた透明オレフィン系樹脂シートのヘイズ値は３２％であり、表面固有抵抗値は１．０×１０１３Ωであった。又、ヒートサイクル試験後のヘイズ値は３３％であり、表面固有抵抗値は１．０×１０１４Ωであった。又、ヒートサイクル試験後にオレフィン系樹脂シートの表面が白化することはなかった。 The haze value of the obtained transparent olefin resin sheet was 32%, and the surface intrinsic resistance value was 1.0 × 10 13 Ω. The haze value after the heat cycle test was 33%, and the surface intrinsic resistance value was 1.0 × 10 14 Ω. In addition, the surface of the olefin resin sheet did not whiten after the heat cycle test.
尚、ヒートサイクル試験は、それぞれ湿度５０％で２０℃、４０℃及び６０℃の恒温槽を準備し、２０℃で６時間、４０℃で４時間、６０℃で４時間、４０℃で４時間及び２０℃で６時間の合計２４時間の加熱を１サイクルとし、１００サイクル加熱した。 For the heat cycle test, prepare constant temperature baths at 20 ° C, 40 ° C and 60 ° C at a humidity of 50%, respectively, at 20 ° C for 6 hours, 40 ° C for 4 hours, 60 ° C for 4 hours, and 40 ° C for 4 hours, respectively. And heating at 20 ° C. for 6 hours for a total of 24 hours was defined as one cycle, and heating was performed for 100 cycles.
得られた透明オレフィン系樹脂シートを打ち抜いて幅３１０ｍｍ、長さ４４０ｍｍの長方形のシートを得た。得られたシートの平滑面が表面になるように折畳んで、図１に示したように、折り目３を介して表面シート１と裏面シート２を形成し、底部を熱融着して本発明のファイルを得た。
The obtained transparent olefin resin sheet was punched out to obtain a rectangular sheet having a width of 310 mm and a length of 440 mm. The present invention is folded so that the smooth surface of the obtained sheet becomes the front surface, the front surface sheet 1 and the
(比較例１)
ＭＦＲ＝１．９ｇ／１０ｍｉｎ、融点約１６０℃のポリプロピレン樹脂（日本ポリプロ社製）１００重量部、線状低密度ポリエチレン（住友化学社製、Ｆ−２００）３重量部及び帯電防止剤０．００４５重量部よりなるポリプロピレン系樹脂組成物を、スクリュー径７０ｍｍの一軸混練押出機に供給して樹脂温度２１０℃で溶融混練した後、溶融混練物を押出して厚さ０．２ｍｍのポリプロピレン系樹脂シートを得た。得られたポリプロピレン系樹脂シートを鏡面ロールと７５℃のエアーナイフの間に約６．０ｍ／ｍｉｎの速度で供給しエアーにより圧着し、成形した後、８０℃でアニールして透明オレフィン系樹脂シートを得た。
(Comparative Example 1)
MFR = 1.9 g / 10 min, polypropylene resin (manufactured by Japan Polypropylene Corporation) with a melting point of about 160 ° C. 100 parts by weight, linear low density polyethylene (manufactured by Sumitomo Chemical Co., Ltd., F-200) 3 parts by weight and antistatic agent 0.0045 A polypropylene-based resin composition composed of parts by weight is supplied to a uniaxial kneading extruder having a screw diameter of 70 mm and melt-kneaded at a resin temperature of 210 ° C., and then the melt-kneaded product is extruded to obtain a polypropylene-based resin sheet having a thickness of 0.2 mm. Obtained. The obtained polypropylene-based resin sheet is supplied between a mirror roll and an air knife at 75 ° C. at a speed of about 6.0 m / min, crimped with air, molded, and then annealed at 80 ° C. to be a transparent olefin-based resin sheet. Got
得られた透明オレフィン系樹脂シートの鏡面ロールで賦形された面（鏡面）は鏡面光沢を有する平滑面であり、凹凸はなく、ＪＩＳ Ｂ ０６０１に準拠して表面粗さ計（東京精密社製、サーフコム１３０Ａ）で表面粗さ（Ｒａ）を測定したところ０．０６μｍであった。 The surface (mirror surface) formed by the mirror surface roll of the obtained transparent olefin resin sheet is a smooth surface having a mirror surface gloss, has no unevenness, and has a surface roughness meter (manufactured by Tokyo Seimitsu Co., Ltd.) in accordance with JIS B 0601. The surface roughness (Ra) was measured with Surfcom 130A) and found to be 0.06 μm.
又、透明オレフィン系樹脂シートのエアーナイフで賦形された面（マット面）をＪＩＳ Ｂ ０６０１に準拠して表面粗さ計（東京精密社製、サーフコム１３０Ａ）で表面粗さ（Ｒａ）を測定したところ０．１６μｍであった。又、マット面にオフセット用インキ（ＴＯＫＡ社製）を用いてオフセット印刷したところ美麗に印刷することができた。 In addition, the surface roughness (Ra) of the transparent olefin resin sheet shaped with an air knife is measured with a surface roughness meter (Surfcom 130A, manufactured by Tokyo Seimitsu Co., Ltd.) in accordance with JIS B 0601. As a result, it was 0.16 μm. Further, when offset printing was performed on the matte surface using offset ink (manufactured by TOKA), it was possible to print beautifully.
得られた透明オレフィン系樹脂シートのヘイズ値は３３％であり、表面固有抵抗値は１．０×１０１３Ωであった。又、実施例１で行ったと同様にしてヒートサイクル試験を行ったところ、試験後のヘイズ値は４５％であり、表面固有抵抗値は１．０×１０１４Ωであった。又、ヒートサイクル試験後にオレフィン系樹脂シートの表面が白化することはなかった。 The haze value of the obtained transparent olefin resin sheet was 33%, and the surface intrinsic resistance value was 1.0 × 10 13 Ω. Moreover, when the heat cycle test was performed in the same manner as in Example 1, the haze value after the test was 45%, and the surface intrinsic resistance value was 1.0 × 10 14 Ω. In addition, the surface of the olefin resin sheet did not whiten after the heat cycle test.
実施例１及び比較例１で得られた透明オレフィン系樹脂シートを用いて、鏡面同士及び鏡面とマット面を重ね合わせて静摩擦係数を測定した。静摩擦係数は新東科（株）製「ＨＥＩＤＯＮ−１０」を用い、重ね合わせた透明オレフィン系樹脂シートに徐々に角度を持たせ、滑り始めた角度を測定した。得られた静摩擦係数を表１に示した。 Using the transparent olefin resin sheets obtained in Example 1 and Comparative Example 1, the coefficient of static friction was measured by superimposing the mirror surfaces and the mirror surface and the mat surface on each other. As the coefficient of static friction, "HEIDON-10" manufactured by Shintoshina Co., Ltd. was used, and the transparent olefin resin sheets stacked were gradually angled, and the angle at which they started to slip was measured. The obtained coefficient of static friction is shown in Table 1.
上記結果から、実施例１で得られた透明オレフィン系樹脂シートは比較例１で得られた透明オレフィン系樹脂シートに比べ小さい角度で滑り出し、重ね合わされた透明オレフィン系樹脂シート同士の滑り性が向上していることがわかった。 From the above results, the transparent olefin resin sheet obtained in Example 1 slides out at a smaller angle than the transparent olefin resin sheet obtained in Comparative Example 1, and the slipperiness between the laminated transparent olefin resin sheets is improved. I found out that I was doing it.
又、実施例１で得られた透明オレフィン系樹脂シートは、室温下で３０日間保存した後においても、オフセット印刷等の二次加工性は優れていた。又、実施例１で得られた透明オレフィン系樹脂シートは帯電防止剤の添加量は少量であったが、室温下で３０日間保存した後の表面固有抵抗値は４．４×１０１３Ωであり、比較例１で得られた透明オレフィン系樹脂シートは室温下で３０日間保存した後の表面固有抵抗値は１．０×１０１３Ωであった。 Further, the transparent olefin resin sheet obtained in Example 1 was excellent in secondary processability such as offset printing even after being stored at room temperature for 30 days. The transparent olefin resin sheet obtained in Example 1 had a small amount of antistatic agent added, but the surface intrinsic resistance value after storage at room temperature for 30 days was 4.4 × 10 13 Ω. The transparent olefin resin sheet obtained in Comparative Example 1 had a surface intrinsic resistance value of 1.0 × 10 13 Ω after being stored at room temperature for 30 days.
又、実施例１で得られた透明オレフィン系樹脂シートは、１年間、常温で保存しても帯電防止剤のブリードアウトは見られず、そのヘイズ値は３４％であり、印刷性は良好であった。又、室温下で３０日間保存した後印刷し、印刷後に１年間、常温で保存しても帯電防止剤のブリードアウトは見られなかった。これに対し、比較例１で得られた透明オレフィン系樹脂シートは、１年間、常温で保存したところ帯電防止剤が表面にブリードアウトして白化し、そのヘイズ値は４５％であった。又、室温下で３０日間保存した後印刷し、印刷後に１年間、常温で保存したところ帯電防止剤が表面にブリードアウトして白化した。 Further, the transparent olefin resin sheet obtained in Example 1 did not show bleed-out of the antistatic agent even when stored at room temperature for one year, and its haze value was 34%, and the printability was good. there were. Further, no bleed-out of the antistatic agent was observed even when the product was stored at room temperature for 30 days and then printed and then stored at room temperature for 1 year after printing. On the other hand, when the transparent olefin resin sheet obtained in Comparative Example 1 was stored at room temperature for one year, the antistatic agent bleeded out to the surface and whitened, and the haze value was 45%. Further, when the product was stored at room temperature for 30 days before printing and then stored at room temperature for 1 year after printing, the antistatic agent bleeded out to the surface and whitened.
本発明の透明オレフィン系樹脂シートはファイルの材料として好適に使用でき、ファイルは透明性、印刷適性が優れており、収納及び取り出しが容易なので、文具業界においてクリアファイルとして好適に使用される。 The transparent olefin resin sheet of the present invention can be suitably used as a material for a file, and since the file has excellent transparency and printability and is easy to store and take out, it is preferably used as a clear file in the stationery industry.
１ 表面シート
２ 裏面シート
３ 折り目
１１、２１ 外側面
１２、２２ 内側面
1
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| JPS5815786B2 (en) * | 1974-07-16 | 1983-03-28 | 帝人株式会社 | How to stake out |
| JPH11129326A (en) * | 1997-10-29 | 1999-05-18 | Sekisui Chem Co Ltd | Production of biaxially stretched film |
| JP2002052878A (en) * | 2000-08-08 | 2002-02-19 | Kokuyo Co Ltd | Housing bag and file |
| US7815388B2 (en) * | 2004-01-20 | 2010-10-19 | Meadwestvaco Corporation | Retractable writing surface |
| JP5742023B2 (en) * | 2010-08-11 | 2015-07-01 | 東洋紡株式会社 | Surface protective film and method for producing the same |
| JP5842743B2 (en) * | 2012-06-15 | 2016-01-13 | 王子ホールディングス株式会社 | Biaxially stretched polypropylene film |
| JP2014223783A (en) * | 2013-04-26 | 2014-12-04 | 積水成型工業株式会社 | Writing sheet |
| JP6323285B2 (en) * | 2014-09-30 | 2018-05-16 | 王子ホールディングス株式会社 | Biaxially stretched polypropylene film |
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2017
- 2017-07-03 JP JP2017130714A patent/JP6976090B2/en active Active
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