JP6303384B2 - Moisture-proof sheet - Google Patents
Moisture-proof sheet Download PDFInfo
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- JP6303384B2 JP6303384B2 JP2013215307A JP2013215307A JP6303384B2 JP 6303384 B2 JP6303384 B2 JP 6303384B2 JP 2013215307 A JP2013215307 A JP 2013215307A JP 2013215307 A JP2013215307 A JP 2013215307A JP 6303384 B2 JP6303384 B2 JP 6303384B2
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- moisture
- layer
- proof sheet
- vapor deposition
- polyethylene terephthalate
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- 238000000034 method Methods 0.000 claims description 23
- 238000007740 vapor deposition Methods 0.000 claims description 18
- -1 polyethylene terephthalate Polymers 0.000 claims description 17
- 229910052809 inorganic oxide Inorganic materials 0.000 claims description 15
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 15
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 14
- 239000011347 resin Substances 0.000 claims description 14
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 13
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 13
- 239000000853 adhesive Substances 0.000 claims description 12
- 230000001070 adhesive effect Effects 0.000 claims description 12
- 238000005530 etching Methods 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 5
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- 239000000395 magnesium oxide Substances 0.000 claims description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 4
- 239000012948 isocyanate Substances 0.000 claims description 3
- 229920005906 polyester polyol Polymers 0.000 claims description 3
- 239000010408 film Substances 0.000 description 21
- 239000000463 material Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000010894 electron beam technology Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 238000007756 gravure coating Methods 0.000 description 2
- 238000007646 gravure printing Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 238000001771 vacuum deposition Methods 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical class CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000012939 laminating adhesive Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Description
本発明は、室内のドアパネルなどに用いる化粧板に、室内での温度や湿度の変化による吸湿・放湿などが原因で発生する反りを防止するために、化粧板の裏面に貼り合わせて用いる防湿シートに関する。 The present invention relates to a moisture-proof coating used on a decorative board used for an indoor door panel and the like, in order to prevent warping caused by moisture absorption / release due to changes in indoor temperature and humidity. Regarding the sheet.
従来前記用途に用いる化粧板としては、合板、中密度繊維板（ＭＤＦ）、ベニア板、ボード材、その他の多層構造の木質系基材の表面に、隠蔽性を与えるためのベタ印刷層や意匠性を向上させるための絵柄摸様層を印刷した化粧シートを貼り合わせたものが一般的に知られている。そして、これらの化粧板には、温度や湿度による変形（反り、寸法変化）を防止するために、その裏面に塗料を塗ったり、防湿シートを貼り合せたりする方法が知られている。 Conventionally, as a decorative board used for the above-mentioned use, a solid printed layer or design for providing concealability to the surface of a plywood, a medium density fiber board (MDF), a veneer board, a board material, and other multi-layer woody base materials. Generally, a decorative sheet printed with a pattern-like layer for improving the properties is bonded. In order to prevent deformation (warpage and dimensional change) due to temperature and humidity, a method of applying a paint on the back surface or attaching a moisture-proof sheet to these decorative plates is known.
しかしながら、前記各種化粧板に接着性を有し、防湿性を有する防湿シートに用いる材質としては、単にその間に接着剤を塗布したり、界面に接着性の処理を施したりするだけでは十分な接着性は見込めなかった。特に前記のような温度や湿度の変化による影響に耐えることも要求されるようなものでは十分な接着性を維持することができなかった。 However, the material used for the moisture-proof sheet having adhesion to the various decorative panels and moisture-proof is sufficient to simply apply an adhesive between them or to perform an adhesive treatment on the interface. Sex was not expected. In particular, sufficient adhesiveness could not be maintained if it was required to withstand the effects of temperature and humidity changes as described above.
本発明はこの課題を解決するためになされたものであり、すなわちその課題とするところは、温度や湿度の変化による影響にも耐えて化粧板との接着性を維持できる防湿シートを提供することにある。 The present invention has been made to solve this problem. That is, the object of the present invention is to provide a moisture-proof sheet that can withstand the effects of changes in temperature and humidity and maintain adhesion to a decorative board. It is in.
本発明はこの課題を解決したものであり、すなわちその請求項１記載の発明は、２軸延伸ポリエチレンテレフタレートフィルムの上に厚み１０〜１５０ｎｍの無機酸化物蒸着層を設け、その上にポリビニルアルコールあるいはポリビニルアルコールに酸化珪素、酸化マグネシウム、酸化アルミニウムのいずれかを添加した組成物を含む樹脂層を設けてなる防湿シートにおいて、前記樹脂層の表出面にポリエステルポリオールとイソシアネート化合物の配合による２液硬化型ウレタン樹脂系の接着用プライマー層を設け、前記２軸延伸ポリエチレンテレフタレートフィルムの前記無機酸化物蒸着層を設けた面とは反対側の面にプラズマを利用したリアクティブエッチング処理を施してなることを特徴とする防湿シートである。 The present invention solves this problem, that is, the invention according to claim 1 provides an inorganic oxide vapor-deposited layer having a thickness of 10 to 150 nm on a biaxially stretched polyethylene terephthalate film, on which polyvinyl alcohol or In a moisture-proof sheet comprising a resin layer containing a composition obtained by adding any of silicon oxide, magnesium oxide, and aluminum oxide to polyvinyl alcohol, a two-component curable type by blending a polyester polyol and an isocyanate compound on the exposed surface of the resin layer A primer layer for adhesion of urethane resin is provided, and a reactive etching process using plasma is performed on the surface opposite to the surface on which the inorganic oxide vapor deposition layer of the biaxially stretched polyethylene terephthalate film is provided. It is a moisture-proof sheet.
本発明はその請求項１記載の発明により、２軸延伸ポリエチレンテレフタレートフィルムの裏面に施したリアクティブエッチング処理により、通常の接着剤を用いても、時間経過後であっても、化粧板との良好な接着強度を維持することを可能とした。 According to the invention of the first aspect, the present invention provides a reactive etching treatment applied to the back surface of the biaxially stretched polyethylene terephthalate film, so that a normal adhesive can be used or a decorative plate can be used. It was possible to maintain good adhesive strength.
以下、本発明を図面に基づき詳細に説明する。図１に本発明の防湿シートの一実施例の断面の形状を示す。２軸延伸ポリエチレンテレフタレートフィルム１の上に無機酸化物蒸着層２、ポリビニルアルコールを含む樹脂層３、接着用プライマー層４を設けてなる。前記接着用プライマー層４には裏面用化粧シートなど（図示せず）を適宜接着し、前記２軸延伸ポリエチレンテレフタレートフィルム１の前記無機酸化物蒸着層を設けた面とは反対側の面にはプラズマを利用したリアクティブエッチング処理を施してなり、化粧板基材の裏面側など（図示せず）へ接着してなる。 Hereinafter, the present invention will be described in detail based on the drawings. FIG. 1 shows a cross-sectional shape of one embodiment of the moisture-proof sheet of the present invention. On the biaxially stretched polyethylene terephthalate film 1, an inorganic oxide vapor deposition layer 2, a resin layer 3 containing polyvinyl alcohol, and an adhesion primer layer 4 are provided. A back surface decorative sheet or the like (not shown) is appropriately bonded to the adhesion primer layer 4, and the surface opposite to the surface on which the inorganic oxide vapor deposition layer of the biaxially stretched polyethylene terephthalate film 1 is provided. A reactive etching process using plasma is performed and bonded to the back surface side (not shown) of the decorative board substrate.
本発明における２軸延伸ポリエチレンテレフタレートフィルム１としては、フィルムあるいはシート状のものであり、厚みは巻き取り加工適性、印刷適性などを考慮して１０〜１００μｍ程度であればよい。本発明の防湿シートは化粧板の裏面に設けるものであるから、フィルムの色等は特に重要視されない場合が多い。着色でも、透明でも適宜使用可能となる。 The biaxially stretched polyethylene terephthalate film 1 in the present invention is a film or a sheet, and the thickness may be about 10 to 100 μm in consideration of winding processability, printability and the like. Since the moisture-proof sheet of the present invention is provided on the back surface of the decorative board, the color of the film is not particularly important. Either colored or transparent can be used as appropriate.
本発明における無機酸化物蒸着層２としては、酸化アルミニウム、酸化珪素、酸化錫、酸化マグネシウム、あるいは、それらの混合物などの無機酸化物からなる層であり、防湿性を有する層であればよい。高温高湿環境での耐性を考慮するとこれらの中では、特に酸化アルミニウム及び酸化珪素を用いることがより好ましい。ただし、本発明の無機酸化物層は、上述した無機酸化物に限定されず、上記条件に適合する材料であれば用いることが可能である。 The inorganic oxide vapor deposition layer 2 in the present invention is a layer made of an inorganic oxide such as aluminum oxide, silicon oxide, tin oxide, magnesium oxide, or a mixture thereof, and may be any layer having moisture resistance. Among these, it is more preferable to use aluminum oxide and silicon oxide in view of resistance in a high temperature and high humidity environment. However, the inorganic oxide layer of the present invention is not limited to the inorganic oxide described above, and any material that satisfies the above conditions can be used.
無機酸化物蒸着層２の厚さは、用いられる無機化合物の種類・構成により最適条件が異なるが、一般的には５〜３００ｎｍの範囲内が望ましく、その値は適宜選択される。ただし膜厚が５ｎｍ未満であると均一な膜が得られないことや膜厚が十分ではないことがあり、防湿シートとしての機能を十分に果たすことができない場合がある。また、膜厚が３００ｎｍを越える場合は薄膜の残留応力によりフレキシビリティを保持させることができず、成膜後外的要因により、薄膜に亀裂を生じるおそれがあるので問題がある。より好ましくは、１０〜１５０ｎｍの範囲内にあることが好ましい。 The optimum thickness of the inorganic oxide vapor deposition layer 2 varies depending on the type and configuration of the inorganic compound to be used, but is generally preferably in the range of 5 to 300 nm, and the value is appropriately selected. However, if the film thickness is less than 5 nm, a uniform film may not be obtained or the film thickness may not be sufficient, and the function as a moisture-proof sheet may not be sufficiently achieved. Further, when the film thickness exceeds 300 nm, the flexibility cannot be maintained due to the residual stress of the thin film, and there is a problem because the thin film may be cracked due to external factors after film formation. More preferably, it is in the range of 10 to 150 nm.
無機酸化物蒸着層２を前記２軸延伸ポリエチレンテレフタレートフィルム１に積層する方法としては、真空蒸着法、スパッタリング法、イオンプレーティング法、プラズマ気相成長法（ＣＶＤ）などを用いることができる。ただし、生産性を考慮すれば、現時点では真空蒸着法が最も優れている。真空蒸着法の加熱手段としては電子線加熱方式や抵抗加熱方式、誘導加熱方式のいずれかの方式を用いることが好ましいが、蒸発材料の選択性の幅広さを考慮すると電子線加熱方式または抵抗加熱方式を用いることがより好ましい。また蒸着薄膜層と基材の密着性及び蒸着薄膜層の緻密性を向上させるために、プラズマアシスト法やイオンビームアシスト法を用いて蒸着することも可能である。また、蒸着膜の透明性を上げるために蒸着の際、酸素等の各種ガスなど吹き込む反応蒸着を用いても一向に構わない。 As a method of laminating the inorganic oxide vapor deposition layer 2 on the biaxially stretched polyethylene terephthalate film 1, a vacuum vapor deposition method, a sputtering method, an ion plating method, a plasma vapor deposition method (CVD), or the like can be used. However, in view of productivity, the vacuum deposition method is the best at present. As the heating means of the vacuum evaporation method, it is preferable to use any one of an electron beam heating method, a resistance heating method, and an induction heating method, but in consideration of the wide selection of the evaporation material, the electron beam heating method or the resistance heating method It is more preferable to use the method. Moreover, in order to improve the adhesiveness of a vapor deposition thin film layer and a base material, and the denseness of a vapor deposition thin film layer, it is also possible to vapor-deposit using a plasma assist method or an ion beam assist method. In order to increase the transparency of the deposited film, it is possible to use reactive deposition in which various gases such as oxygen are blown during the deposition.
本発明におけるポリビニルアルコールを含む樹脂層３としては、ポリビニルアルコールあるいはポリビニルアルコールに酸化珪素、酸化マグネシウム、酸化アルミニウムに代表される無機酸化物を添加した組成物が使用可能であり、これを前記無機酸化物蒸着層２の表面にロールコート法、グラビアコート法等の周知の塗布方法で塗布形成することが可能となる。 As the resin layer 3 containing polyvinyl alcohol in the present invention, polyvinyl alcohol or a composition obtained by adding an inorganic oxide typified by silicon oxide, magnesium oxide, and aluminum oxide to polyvinyl alcohol can be used. It becomes possible to apply and form on the surface of the object deposition layer 2 by a known application method such as a roll coating method or a gravure coating method.
本発明におけるプライマー層４は、前記ポリビニルアルコールを含む樹脂層３と貼着される木質系ボードなどの基材（図示せず）との十分な密着強度を得るために設けるものであり、例えばイソシアネート硬化型ウレタン樹脂系や変性酢酸ビニル樹脂エマルジョン系等の各種ラミネート用接着剤との接着性を十分確保できれば、特に規定されるものではないが、ウレタン系樹脂、アクリル系樹脂、エチレン−酢酸ビニル系樹脂、塩化ビニル−酢酸ビニル共重合系樹脂、ポリアミド系樹脂、ポリエステル系樹脂等のプライマーを上げることが出来る。中でもポリエステルポリオールとイソシアネート化合物の配合による２液硬化型ウレタン樹脂系のプライマーが有効である。プライマー層を設ける方法としては、ロールコート法やグラビア印刷法等の適宜の塗布手段を用いて形成することができる。 The primer layer 4 in the present invention is provided in order to obtain sufficient adhesion strength between the resin layer 3 containing polyvinyl alcohol and a base material (not shown) such as a wooden board to be adhered. It is not particularly defined as long as sufficient adhesiveness with various laminating adhesives such as curable urethane resin and modified vinyl acetate resin emulsion is available, but urethane resin, acrylic resin, ethylene-vinyl acetate system Primers such as resins, vinyl chloride-vinyl acetate copolymer resins, polyamide resins and polyester resins can be raised. Among them, a two-component curable urethane resin primer by blending a polyester polyol and an isocyanate compound is effective. As a method for providing the primer layer, it can be formed by using an appropriate application means such as a roll coating method or a gravure printing method.
適宜設ける裏面化粧紙としては、本発明の防湿シートを貼り合せた化粧板の裏面側に意匠性を持たせるために用いられる。化粧板の表面側に用いられる化粧紙と同様のものが使用可能であるが、特にこれに限定するものではなく。ベタ単色のシートを貼り合せるものであっても良い。 As the backside decorative paper provided as appropriate, it is used for giving design properties to the back side of the decorative board to which the moisture-proof sheet of the present invention is bonded. Although the same thing as the decorative paper used for the surface side of a decorative board can be used, it does not specifically limit to this. A solid single color sheet may be bonded.
２軸延伸ポリエチレンテレフタレートフィルム１としてＰＥＴ：東レ（株）製「ルミラーＴＭ」厚さ１２μｍを用い、この片面に無機酸化物蒸着層２として酸化アルミニウムを電子線加熱方式の反応蒸着により厚さ２０ｎｍで製膜した。
次にこの蒸着面にポリビニルアルコールを含む樹脂層３として、テトラエトキシシラン１０．４ｇと塩酸（０．１Ｎ）８９．６ｇを３０分間攪拌して加水分解させた固形分３重量％（ＳｉＯ２換算）の加水分解溶液とポリビニルアルコール３重量％溶液（重量比で水９０対イソプロピルアルコール１０）が重量比で６：４となる混合溶液をグラビアコート法により乾燥後０．４μｍとなるように塗布し乾燥した。
最後に、２軸延伸ポリエチレンテレフタレートフィルム１の無機酸化物蒸着層２を設けた側とは反対側の面に、プラズマを利用したリアクティブエッチング処理を施した。この際の電極には周波数１３．５６ＭＨｚの高周波電源を用い、自己バイアス値は４５０Ｖ、Ｅｄ値は２１０Ｗ・ｍ２・秒とした。
As the biaxially stretched polyethylene terephthalate film 1, PET: “Lumirror TM” manufactured by Toray Industries, Inc. is used with a thickness of 12 μm. Aluminum oxide is deposited as an inorganic oxide vapor deposition layer 2 on one side by a reactive vapor deposition method using an electron beam heating method. A film was formed.
Next, as the resin layer 3 containing polyvinyl alcohol on this vapor deposition surface, 10.4 g of tetraethoxysilane and 89.6 g of hydrochloric acid (0.1N) were stirred for 30 minutes to be hydrolyzed and solid content was 3 wt% (in terms of SiO 2). ) And a 3% by weight solution of polyvinyl alcohol (water 90: isopropyl alcohol 10 in weight ratio) is applied to a 6: 4 weight ratio by gravure coating so that it becomes 0.4 μm after drying. Dried.
Finally, a reactive etching process using plasma was performed on the surface of the biaxially stretched polyethylene terephthalate film 1 on the side opposite to the side on which the inorganic oxide vapor deposition layer 2 was provided. A high-frequency power source with a frequency of 13.56 MHz was used for the electrode at this time, the self-bias value was 450 V, and the Ed value was 210 W · m 2 · sec.
前記ポリビニルアルコールを含む樹脂層３の表面側に、プライマー層４としてシリカ粉末を含有する２液ウレタン系プライマー樹脂「ラミスター」（東洋インキ製造（株）製）を用い、グラビア印刷法により乾燥後が２ｇ／ｍ２となるように塗布した。これにより本発明の防湿シートを得た。 On the surface side of the resin layer 3 containing polyvinyl alcohol, a two-component urethane primer resin “Lamistar” (manufactured by Toyo Ink Manufacturing Co., Ltd.) containing silica powder as the primer layer 4 is used, and after drying by a gravure printing method. It apply | coated so that it might become 2 g / m <2>. Thereby, the moisture-proof sheet of the present invention was obtained.
＜比較例１＞
リアクティブエッチング処理を行なわなかった以外は実施例１と同様にして防湿シートを得た。
<Comparative Example 1>
A moisture-proof sheet was obtained in the same manner as Example 1 except that the reactive etching treatment was not performed.
＜比較例２＞
リアクティブエッチング処理の変わりに、放電量３０Ｗ・分／ｍ２でのコロナ処理を行なった以外は実施例１と同様にして防湿シートを得た。
<Comparative example 2>
A moisture-proof sheet was obtained in the same manner as in Example 1 except that the corona treatment was performed at a discharge amount of 30 W · min / m 2 instead of the reactive etching treatment.
＜評価＞
以上のようにして得た防湿シートの２軸延伸ポリエチレンテレフタレートフィルム１の酸化物蒸着層２を設けた側とは反対側の面に、接着剤（コニシ（株）製エチレン酢酸ビニル系接着剤２液タイプ）を６５ｇ／ｍ２で塗布し、ＭＤＦ基材（ホクシン（株）製２．５ｍｍ）と貼りあわせた。そして２４時間養生後、２５ｍｍ幅の試験片を引っ張り速度２００ｍｍ／分で１８０°剥離試験を行ない、接着強度を測定した。結果を表１に示す。
<Evaluation>
On the surface of the moisture-proof sheet obtained as described above on the side opposite to the side on which the oxide vapor deposition layer 2 of the biaxially stretched polyethylene terephthalate film 1 is provided, an adhesive (ethylene vinyl acetate adhesive 2 manufactured by Konishi Co., Ltd.) is provided. (Liquid type) was applied at 65 g / m 2 and bonded to an MDF base material (2.5 mm manufactured by Hokushin Co., Ltd.). Then, after curing for 24 hours, a test piece having a width of 25 mm was subjected to a 180 ° peel test at a pulling speed of 200 mm / min, and the adhesive strength was measured. The results are shown in Table 1.
実施例１は接着強度が高く、剥離界面もＭＤＦが材破したことから、プラズマを利用したリアクティブエッチング処理面と接着剤との接着が十分に得られていた。しかし、比較例１および比較例２は接着強度が低く、剥離界面が２軸延伸ポリエチレンテレフタレートフィルム１と接着剤との界面で剥離していることから、接着が不十分であった。 In Example 1, since the adhesive strength was high and the MDF was broken at the peeling interface, adhesion between the reactive etching surface using plasma and the adhesive was sufficiently obtained. However, since Comparative Example 1 and Comparative Example 2 had low adhesive strength and the peeling interface peeled at the interface between the biaxially stretched polyethylene terephthalate film 1 and the adhesive, the adhesion was insufficient.
本発明の防湿シートは室内のドアパネルなどに用いる化粧板の裏面に貼り合わせて室内での温度や湿度の変化による吸湿・放湿などが原因で発生する反りを防止するものとして利用可能である。 The moisture-proof sheet of the present invention can be used as a sheet that is bonded to the back surface of a decorative board used for an indoor door panel or the like and prevents warping caused by moisture absorption / release due to changes in indoor temperature and humidity.
１…２軸延伸ポリエチレンテレフタレートフィルム
２…無機酸化物蒸着層
３…ポリビニルアルコールを含む樹脂層
４…プライマー層
DESCRIPTION OF SYMBOLS 1 ... Biaxially stretched polyethylene terephthalate film 2 ... Inorganic oxide vapor deposition layer 3 ... Resin layer containing polyvinyl alcohol 4 ... Primer layer
Claims (1)
Including a composition in which an inorganic oxide vapor deposition layer having a thickness of 10 to 150 nm is provided on a biaxially stretched polyethylene terephthalate film and any one of silicon oxide, magnesium oxide, and aluminum oxide is added to polyvinyl alcohol or polyvinyl alcohol. In the moisture-proof sheet provided with a resin layer, an adhesive primer layer of a two-component curable urethane resin based on a blend of a polyester polyol and an isocyanate compound is provided on the exposed surface of the resin layer, and the inorganic of the biaxially stretched polyethylene terephthalate film A moisture-proof sheet obtained by performing a reactive etching process using plasma on a surface opposite to a surface on which an oxide vapor deposition layer is provided.
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| JP6984669B2 (en) * | 2015-10-22 | 2021-12-22 | 凸版印刷株式会社 | Dampproof veneer and fittings |
| JP6720498B2 (en) * | 2015-10-22 | 2020-07-08 | 凸版印刷株式会社 | Moisture-proof sheet for building materials and decorative board |
| JP6648484B2 (en) * | 2015-10-22 | 2020-02-14 | 凸版印刷株式会社 | Moisture-proof decorative boards and fittings |
| JP6645119B2 (en) * | 2015-10-22 | 2020-02-12 | 凸版印刷株式会社 | Moisture-proof sheet and decorative board for building materials |
| JP6720497B2 (en) * | 2015-10-22 | 2020-07-08 | 凸版印刷株式会社 | Moisture-proof veneer and fittings |
| JP6579439B2 (en) * | 2015-11-25 | 2019-09-25 | 大日本印刷株式会社 | Moisture-proof sheet for building materials |
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