JP2011110732A - Adhesive for foil printing or for bristle planting printing - Google Patents
Adhesive for foil printing or for bristle planting printing Download PDFInfo
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- JP2011110732A JP2011110732A JP2009266967A JP2009266967A JP2011110732A JP 2011110732 A JP2011110732 A JP 2011110732A JP 2009266967 A JP2009266967 A JP 2009266967A JP 2009266967 A JP2009266967 A JP 2009266967A JP 2011110732 A JP2011110732 A JP 2011110732A
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- 238000007639 printing Methods 0.000 title claims abstract description 43
- 239000000853 adhesive Substances 0.000 title abstract description 59
- 230000001070 adhesive effect Effects 0.000 title abstract description 59
- 238000001035 drying Methods 0.000 claims abstract description 20
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 37
- 239000000839 emulsion Substances 0.000 claims description 29
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 15
- RDOFJDLLWVCMRU-UHFFFAOYSA-N Diisobutyl adipate Chemical compound CC(C)COC(=O)CCCCC(=O)OCC(C)C RDOFJDLLWVCMRU-UHFFFAOYSA-N 0.000 claims description 7
- 229940031769 diisobutyl adipate Drugs 0.000 claims description 7
- 238000000034 method Methods 0.000 description 15
- -1 acryl Chemical group 0.000 description 13
- 238000012546 transfer Methods 0.000 description 12
- 239000012790 adhesive layer Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 10
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- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
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- 238000012360 testing method Methods 0.000 description 5
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- 244000144992 flock Species 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000007665 sagging Methods 0.000 description 3
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- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Natural products OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
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- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N Benzoic acid Natural products OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- BDJRBEYXGGNYIS-UHFFFAOYSA-N Nonanedioid acid Natural products OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- ARCGXLSVLAOJQL-UHFFFAOYSA-N anhydrous trimellitic acid Natural products OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ARCGXLSVLAOJQL-UHFFFAOYSA-N 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
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- 239000011248 coating agent Substances 0.000 description 1
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- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- WNLRTRBMVRJNCN-UHFFFAOYSA-N hexanedioic acid Natural products OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- CXMXRPHRNRROMY-UHFFFAOYSA-N n-Decanedioic acid Natural products OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-N o-dicarboxybenzene Natural products OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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- 239000002904 solvent Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
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- Decoration By Transfer Pictures (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
本発明は、箔印刷用または植毛印刷用に用いられる粘着剤に関するものである。 The present invention relates to an adhesive used for foil printing or flocking printing.
金箔やメタリックシートをはじめ、さまざまな色やホログラムなどの柄が入った箔により、カード、シール、ラベル、はがき、名刺等のようなシート状物に文字・画像等を形成するいわゆる箔印刷（箔転写）が知られている。箔印刷は、従来より、目的とする画像の押し型を予め作製し、接着層を有する箔印刷用フィルムを熱圧着して箔を印刷する方法や、孔版等により予め接着層を形成し、そこに転写箔を重ね、熱圧着して箔を印刷する方法（例えば特許文献１）が知られている。 So-called foil printing (foil) that forms letters, images, etc. on sheets, such as cards, stickers, labels, postcards, business cards, etc., using foil with patterns of various colors and holograms, including gold foil and metallic sheets Transcription) is known. Conventionally, foil printing is performed by previously forming a stamp for an image of interest and printing the foil by thermocompression-bonding a film for foil printing having an adhesive layer, or by forming an adhesive layer in advance using a stencil, etc. There is known a method (for example, Patent Document 1) in which a transfer foil is overlaid and thermocompression bonded to print the foil.
前者の方法は型が高価であって汎用性がないために少量印刷には不向きである。また、特許文献１に記載されている方法は比較的安価ではあるものの、熱圧着処理を行う必要があるため専用のプレス機が必要である上、熱処理の温度や圧着時間等を十分に調整しなければ箔の樹脂層が熱劣化して光沢が失われたり、不十分な圧着のために転写不良が発生したりと、良好な箔印刷を行うためにはある程度の専門的な技術が必要となる。 The former method is not suitable for small-volume printing because the mold is expensive and not versatile. In addition, although the method described in Patent Document 1 is relatively inexpensive, a dedicated press machine is required because it is necessary to perform thermocompression treatment, and the heat treatment temperature and crimping time are sufficiently adjusted. Otherwise, the resin layer of the foil will deteriorate due to heat, and gloss will be lost, or transfer failure will occur due to insufficient crimping. Become.
より安価で、専門的な技術を必要としない箔印刷の方法として、粘着剤で任意の粘着剤層を形成し、そこに転写箔を重ね、圧着して箔を印刷する方法が知られている。この方法は、小さな口径の口を有する容器から粘着剤によりシート状物に対して文字や図柄等を描き、これに転写箔を重ねるもので、少量印刷に適し汎用性があるものである。 As a method of foil printing that is cheaper and does not require specialized techniques, a method is known in which an arbitrary pressure-sensitive adhesive layer is formed with an adhesive, a transfer foil is stacked thereon, and the foil is printed by pressure bonding. . This method draws letters, designs, etc. on a sheet-like material from a container having a small-diameter mouth and overlays a transfer foil on the sheet-like material, and is suitable for small-scale printing and is versatile.
また、この箔印刷のように粘着剤を用いた印刷として転写植毛印刷（転写フロッキー印刷）が知られている。一般的な植毛印刷は、予め布等任意の基材上に形成した接着剤層に、短く切った繊維（フロッキー）を静電吸引力で垂直に差し込み、ベルベット調の触感の画像を形成するものである。これに対しこの転写植毛印刷は、植毛シート（薄いプラスチックシートに弱い力でパイルを接着したシート）に粘着剤・ホットメルト接着剤で任意の粘着剤層を形成し、基材に粘着剤または接着剤層を転写する方法、もしくは、粘着剤で任意の粘着剤層を形成し、そこに植毛シート（薄いプラスチックシートに弱い力でパイルを接着したシート）を重ね、圧着して植毛印刷する方法である。 Also, transfer flock printing (transfer flocky printing) is known as printing using an adhesive, such as foil printing. In general flocking printing, short-cut fibers (flockey) are inserted vertically into an adhesive layer previously formed on an arbitrary base material such as cloth to form a velvet-like tactile image. It is. On the other hand, in this transfer flocking printing, an arbitrary pressure-sensitive adhesive layer is formed with a pressure-sensitive adhesive or hot-melt adhesive on a flocked sheet (a sheet obtained by bonding a pile to a thin plastic sheet with a weak force), and then the pressure-sensitive adhesive or adhesion to the substrate. By transferring the adhesive layer, or by forming an optional adhesive layer with an adhesive, overlaying a flocked sheet (a sheet with a weak force on a thin plastic sheet), pressing and flocking the flock is there.
上記の粘着剤を用いた箔印刷や植毛印刷（以下、これらをまとめて箔印刷等ともいう）では、いずれも粘着剤を容器の細い口から直接出し、所望の画像形成を行うため、粘着剤に高粘度、高チキソトロピー性が要求される。粘着剤としては溶剤系、水系等多種類のものがあるが、安全性や環境配慮、操作性等の観点からＯ／Ｗ型ラテックスエマルション系の粘着剤であることが好ましい。 In foil printing and flocking printing using the above-mentioned pressure-sensitive adhesive (hereinafter collectively referred to as foil printing, etc.), the pressure-sensitive adhesive is used to directly form the pressure-sensitive adhesive directly from the thin mouth of the container and form a desired image. In addition, high viscosity and high thixotropy are required. There are many types of pressure-sensitive adhesives such as solvent-based and water-based adhesives, but O / W-type latex emulsion-based pressure-sensitive adhesives are preferable from the viewpoints of safety, environmental considerations, operability, and the like.
しかし、Ｏ／Ｗ型ラテックスエマルション系の粘着剤は一般に薄く塗工するといった使用用途に使われることが多いことや、加工性等の観点から低粘度のものが多いため、そのままの状態では凹凸のある仕上がりの箔印刷等の粘着剤としては適用できないという問題がある。通常、粘度を高くする方法としては、低粘度の粘着剤に増粘剤を添加する方法、低粘度の粘着剤に粉体等を添加する方法、高分子の樹脂を使用する方法などが知られている。 However, O / W-type latex emulsion-based adhesives are often used for applications such as thin coating, and are often low-viscosity from the viewpoint of processability. There is a problem that it cannot be applied as a pressure sensitive adhesive for a finished foil printing or the like. Usually, as a method of increasing the viscosity, a method of adding a thickener to a low-viscosity adhesive, a method of adding powder or the like to a low-viscosity adhesive, a method of using a polymer resin, etc. are known. ing.
しかし、低粘度の粘着剤に増粘剤を添加すると、粘着剤の貯蔵安定性が著しく悪くなり、常温保管数ヶ月の経時で粘着剤の著しい粘度変化、水分離が起こる。また、低粘度の粘着剤に粉体等を添加すると、粘着力が著しく低下して本来の粘着剤としての機能を確保できない。一方、高分子の樹脂を使用する方法ではロット規模が大きくなるために、少量の所望物を得ることは困難で汎用性に乏しいという問題がある。 However, when a thickener is added to a low-viscosity pressure-sensitive adhesive, the storage stability of the pressure-sensitive adhesive is remarkably deteriorated, and the viscosity of the pressure-sensitive adhesive changes significantly and water is separated over several months at room temperature. Further, when powder or the like is added to the low-viscosity adhesive, the adhesive strength is remarkably lowered, and the original function as an adhesive cannot be ensured. On the other hand, in the method using a polymer resin, the lot scale becomes large, so that there is a problem that it is difficult to obtain a small amount of a desired product and the versatility is poor.
一般に高粘度物質を得る別の方法として、低粘度物質に所望とする粘度よりも高い粘度を有する高粘度物質を混ぜ合わせて所望の粘度を有する高粘度物質を調整する技術が知られている。この技術を利用して低粘度の粘着剤に高粘度の接着剤を添加することを試みたが、所望とする高粘度の粘着剤を得るためには、高粘度の接着剤を高い割合で添加する必要があったが、そのようにして得られた粘着剤は、箔印刷等ができる粘着力を有しないものであった。本発明者が鋭意検討を行ったところ、箔印刷等に用いられる粘着剤は容器から出しやすく、粘着剤によりシート状物に対して文字や図柄等を描けるだけの粘度を有するとともに、箔や植毛を良好に転写するためには、乾燥後に適度なタック値を兼ね備えている必要があることがわかり、本発明に至った。
すなわち、本発明は箔印刷等に好適な粘着剤を提供することを目的とするものである。
In general, as another method for obtaining a high-viscosity substance, a technique for adjusting a high-viscosity substance having a desired viscosity by mixing a low-viscosity substance with a high-viscosity substance having a viscosity higher than a desired viscosity is known. We tried to add a high-viscosity adhesive to a low-viscosity adhesive using this technology, but in order to obtain the desired high-viscosity adhesive, a high-viscosity adhesive was added at a high rate. However, the pressure-sensitive adhesive obtained as described above did not have adhesive strength capable of foil printing or the like. As a result of intensive studies by the inventor, the adhesive used for foil printing and the like is easy to take out from the container, and has a viscosity sufficient to draw letters, designs, etc. on the sheet-like material by the adhesive, and the foil or flocking It was found that in order to transfer the toner well, it is necessary to have an appropriate tack value after drying, which led to the present invention.
That is, an object of the present invention is to provide a pressure-sensitive adhesive suitable for foil printing and the like.
本発明の箔印刷用または植毛印刷用粘着剤は、乾燥前の粘度が９０００ｍＰａ・ｓ以上２４０００ｍＰａ・ｓ以下であって、乾燥後のボールタック値が１以上２以下であることを特徴とするものである。
ここで、粘着剤とは、常温で粘着性を有し、軽い圧力で被着材に接着する物質を意味する。
The adhesive for foil printing or flocking printing of the present invention has a viscosity before drying of 9000 mPa · s or more and 24000 mPa · s or less, and a ball tack value after drying of 1 or more and 2 or less. It is.
Here, the pressure-sensitive adhesive means a substance that has adhesiveness at room temperature and adheres to an adherend with light pressure.
本発明の箔印刷用または植毛印刷用粘着剤は、アクリルエマルションおよびアジピン酸ジイソブチルを含み、該アジピン酸ジイソブチルの含有量が粘着剤全量に対して５〜２０質量％であることがより好ましい。 The adhesive for foil printing or flocking printing of the present invention contains an acrylic emulsion and diisobutyl adipate, and the content of diisobutyl adipate is more preferably 5 to 20% by mass with respect to the total amount of the adhesive.
本発明の箔印刷用または植毛印刷用粘着剤は、乾燥前の粘度が９０００ｍＰａ・ｓ以上２４０００ｍＰａ・ｓ以下であって、乾燥後のボールタック値が１以上２以下であるため、粘着剤は容器から出しやすく、良好な描写性を有するとともに、箔や植毛を良好に転写することが可能である。 The adhesive for foil printing or flocking printing of the present invention has a viscosity before drying of 9000 mPa · s to 24000 mPa · s and a ball tack value of 1 to 2 after drying. It is easy to take out and has good descriptive properties, and it is possible to transfer foil and flocking well.
以下、本発明の箔印刷用または植毛印刷用粘着剤（以下、単に粘着剤という）について詳細に説明する。
粘着剤の乾燥前の粘度は、９０００〜２４０００ ｍＰａ・ｓであり、好ましくは１００００〜２００００ｍＰａ・ｓであり、さらには１００００〜１５０００ｍＰａ・ｓが好ましい。粘着剤の粘度は、ＨＡＡＫＥレオメーター ２３℃、ｒａｔｅ＝１０（１／Ｓ）により規定される。粘着剤の粘度が９０００ｍＰａ・ｓよりも小さいと、粘着剤を容器から押し出す場合の粘度が足りず、液タレが起こりやすく、粘着剤によりカード、シール、ラベル、はがき、名刺等のようなシート状物に対して文字や図柄等を描くといった描写性が悪くなる。一方、粘着剤の粘度が２４０００ ｍＰａ・ｓよりも大きくなると、粘度の上昇とともに容器から吐出させる際の吐出性が悪くなる。
Hereinafter, the adhesive for foil printing or flocking printing of the present invention (hereinafter simply referred to as an adhesive) will be described in detail.
The viscosity of the pressure-sensitive adhesive before drying is 9000 to 24000 mPa · s, preferably 10,000 to 20000 mPa · s, and more preferably 10,000 to 15000 mPa · s. The viscosity of the adhesive is defined by HAAKE rheometer 23 ° C., rate = 10 (1 / S). If the viscosity of the adhesive is less than 9000 mPa · s, the viscosity when extruding the adhesive from the container is insufficient, and liquid sagging is likely to occur, and the adhesive forms a sheet such as a card, seal, label, postcard, business card, etc. Descriptiveness such as drawing characters or designs on an object is deteriorated. On the other hand, when the viscosity of the pressure-sensitive adhesive is larger than 24000 mPa · s, the discharge property when discharging from the container becomes worse as the viscosity increases.
粘着剤の乾燥後のボールタック値は１以上２以下である。箔印刷や植毛印刷の場合、箔や植毛は通常ベースフィルム上に設けられているが、ボールタック値が２よりも高くなると、箔や植毛とベースフィルムとの間で剥離が行われずに、粘着剤により構成される粘着層が断裂してしまう。一方でボールタック値が低すぎると、顔料箔や植毛の転写性が悪くなる。但し、アルミ蒸着箔に限れば、一般的に、蒸着層の厚みが薄くベースフィルムとの接着性も弱いため、乾燥後のボールタック値は１より低くてもよい。 The ball tack value after drying of the pressure-sensitive adhesive is 1 or more and 2 or less. In the case of foil printing or flocking printing, the foil or flocking is usually provided on the base film. However, if the ball tack value is higher than 2, the foil or flocking is not peeled off between the foil or flocking and the base film. The adhesive layer composed of the agent will tear. On the other hand, when the ball tack value is too low, the transferability of the pigment foil and the flocking is deteriorated. However, as long as it is limited to the aluminum vapor-deposited foil, since the thickness of the vapor-deposited layer is generally thin and the adhesion to the base film is weak, the ball tack value after drying may be lower than 1.
本発明におけるボールタック値はＪＩＳ Ｚ−０２３７規格：傾斜式ボールタック試験法に準拠した、Ｊ．Ｄｏｗ法によって規定される。詳細には、試験片に粘着剤を乾燥皮膜が２５μｍとなるように塗布し、１１０℃、１分乾燥後、３０°の角度の傾斜面に試験片の粘着剤塗布面を上向きに固定し、ボール（直径が１／３２インチから１インチまでの３２種の転がす鋼球）が助走路（１００ｍｍ）を転がり、助走路に続く試験片の粘着剤塗布面（１００ｍｍ）上で停止した最大径のボールナンバーで規定する。 The ball tack value in the present invention is determined according to JIS Z-0237 standard: in accordance with the inclined ball tack test method. It is defined by the Dow method. Specifically, the adhesive is applied to the test piece so that the dry film has a thickness of 25 μm, and after drying at 110 ° C. for 1 minute, the adhesive application surface of the test piece is fixed upward on an inclined surface at an angle of 30 °, A ball (32 kinds of rolling steel balls with a diameter of 1/32 inch to 1 inch) rolls on the runway (100 mm) and stops on the adhesive-coated surface (100 mm) of the test piece following the runway. It is specified by the ball number.
本発明の粘着剤は、高粘度粘着剤と低粘度接着剤を混合し、これに可塑剤を添加することにより製造することができる。低粘度接着剤、高粘度粘着剤、可塑剤の混合物は、皮膜形成後または乾燥後に透明であることが好ましく、とりわけ植毛印刷の場合には、植毛後、粘着剤が完全に植毛により覆われないため、転写後の美観の観点からは混合したときに透明であって、白濁しないものであることがより好ましい。 The pressure-sensitive adhesive of the present invention can be produced by mixing a high-viscosity pressure-sensitive adhesive and a low-viscosity adhesive and adding a plasticizer thereto. The mixture of low-viscosity adhesive, high-viscosity pressure-sensitive adhesive, and plasticizer is preferably transparent after film formation or after drying. Especially in the case of flocking printing, the pressure-sensitive adhesive is not completely covered by flocking after flocking. Therefore, from the viewpoint of aesthetics after transfer, it is more preferable that the mixture is transparent when mixed and does not become cloudy.
低粘度接着剤としては、粘度が２０００〜５０００ｍＰａ・ｓの接着剤であることが好ましく、例えばアクリルエマルション、酢酸ビニルエマルション、スチレン・アクリルエマルション、変性アクリルエマルション、酢酸ビニル・アクリルエマルション、エチレン・酢酸ビニルエマルション、ポリエステル・アクリルエマルション、ポリエステル・ＥＶＡエマルション、ウレタンエマルション等が好ましく挙げられ、皮膜の透明性、操作性、価格等の観点からはアクリルエマルション等がより好ましい。 The low-viscosity adhesive is preferably an adhesive having a viscosity of 2000 to 5000 mPa · s. For example, acrylic emulsion, vinyl acetate emulsion, styrene / acryl emulsion, modified acrylic emulsion, vinyl acetate / acryl emulsion, ethylene / vinyl acetate. Preferred examples include emulsions, polyester / acrylic emulsions, polyester / EVA emulsions, urethane emulsions, etc., and acrylic emulsions are more preferred from the viewpoints of film transparency, operability, price, and the like.
高粘度粘着剤としては、５０００〜７００００ｍＰａ・ｓの粘着剤であることが好ましく、例えばアクリルエマルション、酢酸ビニルエマルション、スチレン・アクリルエマルション、変性アクリルエマルション、酢酸ビニル・アクリルエマルション、エチレン・酢酸ビニルエマルション、ポリエステル・アクリルエマルション、ポリエステル・ＥＶＡエマルション、ウレタンエマルション等が好ましく挙げられ、皮膜の柔軟性、皮膜の透明性、操作性、価格等の観点からはアクリルエマルション等がより好ましい。 The high-viscosity pressure-sensitive adhesive is preferably a pressure-sensitive adhesive of 5000 to 70000 mPa · s. For example, acrylic emulsion, vinyl acetate emulsion, styrene / acryl emulsion, modified acrylic emulsion, vinyl acetate / acryl emulsion, ethylene / vinyl acetate emulsion, Preferred examples include polyester / acrylic emulsions, polyester / EVA emulsions, urethane emulsions, etc., and acrylic emulsions are more preferred from the viewpoints of film flexibility, film transparency, operability, price, and the like.
可塑剤としては、アジピン酸エステル、フタル酸エステル、オレイン酸エステル、リン酸エステル、トリメリット酸エステル、クエン酸エステル、セバシン酸エステル、アゼライン酸エステル、マレイン酸エステル、安息香酸エステル、エポキシ化植物油、ポリエステル系可塑剤等が好ましく挙げられ、粘着付与効果、取り扱い上の観点からはアジピン酸ジイソブチル、アジピン酸ジイソブチル等がより好ましい。 Plasticizers include adipic acid ester, phthalic acid ester, oleic acid ester, phosphoric acid ester, trimellitic acid ester, citric acid ester, sebacic acid ester, azelaic acid ester, maleic acid ester, benzoic acid ester, epoxidized vegetable oil, Polyester plasticizers and the like are preferable, and diisobutyl adipate, diisobutyl adipate and the like are more preferable from the viewpoint of tackifying effect and handling.
上記低粘度接着剤、高粘度粘着剤、可塑剤のそれぞれの添加量は、乾燥前の粘度が９０００ｍＰａ・ｓ以上２４０００ｍＰａ・ｓ以下であって、乾燥後のボールタック値が１以上２以下となるように調整される。詳細には、低粘度接着剤、高粘度粘着剤の粘度にもよるが、低粘度接着剤と高粘度粘着剤の比が概ね１：１の場合、可塑剤は粘着剤全量に対して５〜２０質量％程度、より好ましくは７〜１８質量％程度、さらには７〜１３質量％程度であることがより望ましい。 Each of the low-viscosity adhesive, the high-viscosity pressure-sensitive adhesive, and the plasticizer is added such that the viscosity before drying is 9000 mPa · s to 24000 mPa · s, and the ball tack value after drying is 1 to 2 To be adjusted. Specifically, although depending on the viscosity of the low-viscosity adhesive and the high-viscosity adhesive, when the ratio of the low-viscosity adhesive to the high-viscosity adhesive is approximately 1: 1, the plasticizer is 5 to the total amount of the adhesive. About 20% by mass, more preferably about 7 to 18% by mass, and more preferably about 7 to 13% by mass.
なお、粘着剤の乾燥後の膜が軟らかいと、箔や植毛のベースフィルム剥離時に、粘着剤層が断裂破壊されたり、転写物にシワが入ったりするので、粘着剤の皮膜形成後の膜硬度を確保するため、上記のアクリル系エマルションを使用する場合には、Ｔｇ（ガラス転移点）−２０℃以下のアクリル系エマルションの含有比率は粘着剤全量の５０質量％以下となるように調整することが好ましい。
以下、本発明の粘着剤を実施例を用いてさらに詳細に説明する。
In addition, if the film after drying the adhesive is soft, the adhesive layer will tear and break when the foil or flocked base film is peeled off, or wrinkles will appear in the transferred material. In order to ensure the above, when using the above acrylic emulsion, the content ratio of the acrylic emulsion having a Tg (glass transition point) of −20 ° C. or less should be adjusted to 50% by mass or less of the total amount of the adhesive. Is preferred.
Hereinafter, the pressure-sensitive adhesive of the present invention will be described in more detail using examples.
（粘着剤の調整）
下記表１に示す配合（表１に示す数値は質量部である）で原材料を混合して実施例１〜６、比較例１〜６の粘着剤を調整した。なお、表１において、Ｘ５９７８８はサイデン化学（株）社製アクリル系エマルション（粘度：４０００ｍＰａ・ｓ）、ＳＥ６０１０Ｈは昭和高分子（株）社製アクリル系エマルション（粘度：８０００ｍＰａ・ｓ）、ＳＥ７００１は昭和高分子（株）社製アクリル系エマルション（粘度：２５００ｍＰａ・ｓ）、ビニサイザー４０は花王（株）社製可塑剤アジピン酸ジイソブチルである。
(Adhesive adjustment)
The raw materials were mixed in the composition shown in Table 1 below (the numerical values shown in Table 1 are parts by mass) to prepare the adhesives of Examples 1 to 6 and Comparative Examples 1 to 6. In Table 1, X59788 is an acrylic emulsion (viscosity: 4000 mPa · s) manufactured by Seiden Chemical Co., Ltd., SE6010H is an acrylic emulsion (viscosity: 8000 mPa · s) manufactured by Showa Polymer Co., Ltd., and SE7001 is Showa. Acrylic emulsion (viscosity: 2500 mPa · s) manufactured by Kobunshi Co., Ltd., and Vinicizer 40 is a plasticizer diisobutyl adipate manufactured by Kao Corporation.
（評価方法）
（粘度）
ＨＡＡＫＥレオメーター ２３℃、ｒａｔｅ＝１０（１／Ｓ）により実施例１〜６、比較例１〜６の粘着剤の粘度を測定した。
(Evaluation methods)
(viscosity)
HAAKE rheometer The viscosities of the adhesives of Examples 1 to 6 and Comparative Examples 1 to 6 were measured at 23 ° C. and rate = 10 (1 / S).
（ボールタック）
直径が１／３２ インチから１インチまでの３２種の転がす鋼球を用意した。試験片に実施例１〜６、比較例１〜６の粘着剤を乾燥皮膜が２５μｍとなるように塗布し、１１０℃、１分乾燥後、３０°の角度の傾斜面に試験片の粘着剤塗布面を上向きに固定し、用意したボールが助走路（１００ｍｍ）を転がり、助走路に続く試験片の粘着剤塗布面（１００ｍｍ）上で停止した最大径のボールナンバーにより測定した。なお、表中の×は１／３２インチのボールで粘着剤塗布面に止まらなかったことを示している。
(Ball tack)
Thirty-two types of rolling steel balls having a diameter of 1/32 inch to 1 inch were prepared. The pressure-sensitive adhesives of Examples 1 to 6 and Comparative Examples 1 to 6 were applied to the test pieces so that the dry film had a thickness of 25 μm. The coated surface was fixed upward, the prepared ball rolled on the runway (100 mm), and the ball number of the maximum diameter stopped on the adhesive coated surface (100 mm) of the test piece following the runway was measured. In addition, x in the table | surface has shown that it did not stop on the adhesive application surface with a 1/32 inch ball.
（転写性）
実施例１〜６、比較例１〜６の粘着剤により１ｍｍ厚の粘着層を形成した後、室温２３℃、湿度５０％で１２時間乾燥させて、アルミ蒸着層（箔ピタ（登録商標）ゴールド）、顔料箔（箔ピタ（登録商標）レインボー）、植毛（ふわピタ（登録商標））を粘着層にそれぞれ密着させ、剥離した後、以下のように評価した。
○：箔および植毛部分が転写する
△：箔および植毛部分が一部転写しない
×：転写しないまたは粘着層の凝集破壊が発生
(Transferability)
After forming an adhesive layer having a thickness of 1 mm with the adhesives of Examples 1 to 6 and Comparative Examples 1 to 6, it was dried at room temperature 23 ° C. and humidity 50% for 12 hours to obtain an aluminum deposited layer (foil Pita (registered trademark) gold) ), Pigment foil (foil pita (registered trademark) rainbow), and flocking (fuwa pita (registered trademark)) were adhered to the adhesive layer, peeled off, and evaluated as follows.
○: The foil and the flocked portion are transferred. Δ: The foil and the flocked portion are not partially transferred. ×: No transfer or cohesive failure of the adhesive layer occurs.
（描画性）
実施例１〜６、比較例１〜６の粘着剤を口径１ｍｍの細口容器チューブ（箔ピタ（登録商標）専用のり容器）に充填し、２ｍｍ間隔で粘着剤を吐出させて、以下のように評価した。
○：粘着剤がつながらない
△：粘着剤が一部つながる
×：粘着剤がつながり描写に支障がある
(Drawability)
The adhesives of Examples 1 to 6 and Comparative Examples 1 to 6 were filled into a 1 mm caliber narrow container tube (foil pita (registered trademark) dedicated glue container), and the adhesive was discharged at intervals of 2 mm, as follows. evaluated.
○: Adhesive is not connected △: Adhesive is partially connected ×: Adhesive is connected and there is a problem in drawing
（吐出性）
実施例１〜６、比較例１〜６の粘着剤を口径１ｍｍの細口容器チューブ（箔ピタ（登録商標）専用のり容器）に充填し、チューブ腹を押して、吐出性を以下のように評価した。
○：吐出する
△：吐出するがタレが生じる
×：吐出しない
(Dischargeability)
The adhesives of Examples 1 to 6 and Comparative Examples 1 to 6 were filled into a 1 mm-diameter narrow-mouthed container tube (foil pita (registered trademark) dedicated glue container), the tube belly was pushed, and the dischargeability was evaluated as follows. .
○: Discharge △: Discharge but sagging ×: Do not discharge
（貯蔵性）
実施例１〜６、比較例１〜６の粘着剤を５０℃で１ヶ月放置した後、以下のように評価した。
○：分離、硬化が見られない
×：分離、硬化が見られる
(Storability)
The adhesives of Examples 1 to 6 and Comparative Examples 1 to 6 were allowed to stand at 50 ° C. for 1 month and then evaluated as follows.
○: Separation and curing are not observed ×: Separation and curing are observed
表１の結果から明らかなように、本発明の粘着剤（実施例１〜６）は、乾燥前の粘度が９０００ｍＰａ・ｓ以上２４０００ｍＰａ・ｓ以下であって、乾燥後のボールタック値が１以上２以下であるため、粘着剤は容器から出しやすく、良好な描写性を有するとともに、箔や植毛を良好に転写することができた。粘着剤の粘度が９０００ｍＰａ・ｓよりも小さい場合（比較例１〜５）には、液タレが起こりやすく、描写性が悪かった。一方、粘着剤の粘度が２４０００ ｍＰａ・ｓよりも大きい場合（比較例６）には、描写性を必要とする１ｍｍの口径からの吐出が悪くなり、操作性を著しく低下させた。また、増粘剤を使用しているため分離が起こり、貯蔵性が悪かった。さらに、乾燥後のボールタック値が２よりも大きい場合（比較例４〜６）には、箔や植毛とベースフィルムとの間で剥離が行われずに、粘着剤により構成される粘着層が断裂して転写性が悪くなった。 As is clear from the results in Table 1, the pressure-sensitive adhesives of the present invention (Examples 1 to 6) have a viscosity before drying of 9000 mPa · s to 24000 mPa · s, and a ball tack value after drying of 1 or more. Since it was 2 or less, the pressure-sensitive adhesive was easy to take out from the container, had good descriptive properties, and was able to transfer foil and flocking well. When the viscosity of the pressure-sensitive adhesive was less than 9000 mPa · s (Comparative Examples 1 to 5), liquid sagging was likely to occur and the depictability was poor. On the other hand, when the viscosity of the pressure-sensitive adhesive was larger than 24000 mPa · s (Comparative Example 6), ejection from a 1 mm aperture that required descriptiveness was deteriorated, and operability was significantly reduced. Moreover, since the thickener was used, isolation | separation occurred and the storage property was bad. Furthermore, when the ball tack value after drying is larger than 2 (Comparative Examples 4 to 6), peeling between the foil or flock and the base film is not performed, and the pressure-sensitive adhesive layer composed of the pressure-sensitive adhesive is torn. As a result, the transferability deteriorated.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009266967A JP2011110732A (en) | 2009-11-25 | 2009-11-25 | Adhesive for foil printing or for bristle planting printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009266967A JP2011110732A (en) | 2009-11-25 | 2009-11-25 | Adhesive for foil printing or for bristle planting printing |
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| Publication Number | Publication Date |
|---|---|
| JP2011110732A true JP2011110732A (en) | 2011-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2009266967A Withdrawn JP2011110732A (en) | 2009-11-25 | 2009-11-25 | Adhesive for foil printing or for bristle planting printing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014065700A (en) * | 2012-07-18 | 2014-04-17 | Mitsubishi Pencil Co Ltd | Method for providing claws and skin with decoration or makeup of high intensity or high concealing property and decoration set or makeup set for providing the decoration or makeup |
| JPWO2016021637A1 (en) * | 2014-08-06 | 2017-06-15 | コニカミノルタ株式会社 | Latex ink, foil image forming method using the same, laminate, and wallpaper |
| CN113631371A (en) * | 2019-03-26 | 2021-11-09 | 日东电工株式会社 | Electrode bonding structure and biosensor |
-
2009
- 2009-11-25 JP JP2009266967A patent/JP2011110732A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014065700A (en) * | 2012-07-18 | 2014-04-17 | Mitsubishi Pencil Co Ltd | Method for providing claws and skin with decoration or makeup of high intensity or high concealing property and decoration set or makeup set for providing the decoration or makeup |
| JPWO2016021637A1 (en) * | 2014-08-06 | 2017-06-15 | コニカミノルタ株式会社 | Latex ink, foil image forming method using the same, laminate, and wallpaper |
| CN113631371A (en) * | 2019-03-26 | 2021-11-09 | 日东电工株式会社 | Electrode bonding structure and biosensor |
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