JP2017047528A - Pressure-sensitive transfer correction tape - Google Patents
Pressure-sensitive transfer correction tape Download PDFInfo
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- JP2017047528A JP2017047528A JP2015169905A JP2015169905A JP2017047528A JP 2017047528 A JP2017047528 A JP 2017047528A JP 2015169905 A JP2015169905 A JP 2015169905A JP 2015169905 A JP2015169905 A JP 2015169905A JP 2017047528 A JP2017047528 A JP 2017047528A
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- correction
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- 238000012546 transfer Methods 0.000 title claims abstract description 41
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Landscapes
- Adhesive Tapes (AREA)
Abstract
Description
本発明は、紙面などに記録された文字などを隠蔽修正するために使用される感圧転写修正テープに関する。 The present invention relates to a pressure-sensitive transfer correction tape used for concealing and correcting characters recorded on paper.
従来、ボールペン、万年筆、マーキングペンなどの筆記具による筆記描線やタイプライター、ＰＰＣコピーによるコピー描線など、消しゴムなどでは消せないものを消去・修正する際には、一般に修正液や自動巻き取り機構を持ったカセットタイプの感圧転写修正テープが提供されている。しかしながら、修正液でこのような誤字などを修正した際には、修正液の乾燥時間が長いことや修正箇所が平滑になり難いため再筆記・再印字し難いという問題があり、現在では感圧転写修正テープが多く使用されている。 Conventionally, when erasing and correcting things that cannot be erased with an eraser, such as writing lines with a writing instrument such as a ballpoint pen, fountain pen, or marking pen, typewriters, copy lines with a PPC copy, etc., there is generally a correction fluid and an automatic winding mechanism. A cassette-type pressure-sensitive transfer correction tape is provided. However, when such typographical errors are corrected with correction fluid, there are problems that it is difficult to rewrite and reprint because the drying time of the correction fluid is long and the correction area is difficult to smooth. Many transfer correction tapes are used.
また、修正被覆層インクは油性ベースが一般的であり、脱溶剤型の水性ベースの修正被覆層インクの開発も進められているものの、従来の溶剤系と比較して製造面において、離型処理が施された紙やプラスチック基材に対して修正被覆層インクを塗工する際に、修正被覆層インクをはじいてしまい、均一に塗工しにくい問題があった。 In addition, the modified coating layer ink is generally an oil-based base, and although development of a solvent-free water-based modified coating layer ink is in progress, a mold release treatment is performed in terms of production compared to conventional solvent-based inks. When the correction coating layer ink is applied to the paper or plastic substrate to which is applied, the correction coating layer ink is repelled, and there is a problem that it is difficult to apply the coating uniformly.
また、感圧転写修正テープにて文字などを隠蔽した後に経時的に隠蔽した文字が浮き出てしまうブリード現象の発生、あるいは、修正被覆層上にボールペンなどで再筆記した際のボールペンインクの滲みやボールペンインクの乾燥性の悪さなどの問題も挙げられる。特に水性及び水性ゲルボールペンインクで修正被覆層に再筆記した際の乾燥性の悪さが顕著である問題があった。 Also, the occurrence of a bleeding phenomenon that the hidden characters emerge over time after concealing characters etc. with the pressure-sensitive transfer correction tape, or bleeding of the ball-point pen ink when rewriting with a ballpoint pen etc. on the correction coating layer There are also problems such as poor drying properties of ballpoint pen ink. In particular, there was a problem that remarkably poor dryness when re-written on the correction coating layer with aqueous and aqueous gel ballpoint pen inks.
特許文献１には、再筆記時の水性ボールペンインクの乾燥性、筆記直後の滲みや汚れについて言及されており、修正被覆層中のバインダー樹脂としてガラス転移温度が１０℃以下の熱可塑性アクリル系合成樹脂エマルジョンを用いることが開示されているが、具体的な乾燥性の向上効果については示されていない。検討結果によれば、修正被覆層中にガラス転移温度が１０℃以下の熱可塑性アクリル系合成樹脂エマルジョンを含ませることで、水性インク及び水性ゲルインクで修正被覆層に再筆記した際のはじきを抑制する効果はあるが、水性インク及び水性ゲルインクの乾燥性に対しては効果が十分でないことが判明している。 Patent Document 1 mentions the drying property of water-based ballpoint pen ink at the time of rewriting, bleeding and stain immediately after writing, and a thermoplastic acrylic synthetic resin having a glass transition temperature of 10 ° C. or less as a binder resin in the modified coating layer. Although the use of a resin emulsion is disclosed, no specific drying effect is shown. According to the study results, by including a thermoplastic acrylic synthetic resin emulsion with a glass transition temperature of 10 ° C. or less in the modified coating layer, repelling of the modified coating layer with aqueous ink and aqueous gel ink is suppressed. However, it has been found that the effect on the drying properties of water-based inks and water-based gel inks is not sufficient.
特許文献２には、水性修正被覆層の塗工時のハジキや耐ブリード性について言及されており、修正被覆層中にポリエーテル変性シロキサンを含ませることが開示されているが、具体的な乾燥性の向上効果については示されていない。検討結果によれば、修正被覆層中にポリエーテル変性シロキサンを含ませても、水性インク及び水性ゲルインクで修正被覆層に筆記した際の水性インク及び水性ゲルインクの乾燥性に対しては効果が無いことが判明している。 Patent Document 2 refers to repellency and bleed resistance during application of the aqueous correction coating layer, and discloses that the modified coating layer contains a polyether-modified siloxane. There is no indication of the effect of improving sex. According to the examination results, even when polyether-modified siloxane is included in the correction coating layer, there is no effect on the drying property of the water-based ink and the water-based gel ink when written on the correction coating layer with the water-based ink and the water-based gel ink. It has been found.
本発明は、脱溶剤型の修正被覆層インクを、離型処理が施された紙やプラスチック基材（以下、剥離基材と称する。）に塗工する際に、修正被覆層インクをはじくことが無く、均一に塗工する事が可能であり、水性及び水性ゲルボールペンインクで修正被覆層に再筆記した際のボールペンインクの乾燥性に優れる感圧転写修正テープを提供することを目的とする。また、本発明は、感圧転写修正テープにて文字などを隠蔽した後の耐ブリード性に優れる感圧転写修正テープを提供することを目的とする。 The present invention repels the modified coating layer ink when the solvent-removed modified coating layer ink is applied to a paper or plastic substrate (hereinafter referred to as a release substrate) that has been subjected to a release treatment. An object of the present invention is to provide a pressure-sensitive transfer correction tape which can be applied uniformly and can be applied uniformly, and is excellent in the drying property of the ballpoint pen ink when rewritten on the correction coating layer with an aqueous and aqueous gel ballpoint pen ink. . Another object of the present invention is to provide a pressure-sensitive transfer correction tape having excellent bleed resistance after concealing characters and the like with the pressure-sensitive transfer correction tape.
本発明者らは、上記課題を解決するために鋭意研究を重ねた結果、顔料、体質顔料などを含む修正被覆層インクのバインダー樹脂として、エチレン−酢酸ビニル共重合系樹脂エマルジョンを用いることにより、修正被覆層インクをはじくことが無く、均一に塗工する事が可能であり、水性及び水性ゲルボールペンインクで修正被覆層に再筆記した際のボールペンインクの乾燥性に優れる修正被覆層が形成されること、さらには、体質顔料中にシリカ粉末を所定量配合することにより、修正被覆層の耐ブリード性が向上することを見出し、本発明に到達した。 As a result of intensive studies to solve the above problems, the present inventors have used an ethylene-vinyl acetate copolymer resin emulsion as a binder resin of a modified coating layer ink containing pigments, extender pigments, etc. The correction coating layer ink is not repelled and can be applied uniformly, and a correction coating layer is formed that has excellent dryness of the ballpoint pen ink when rewritten on the correction coating layer with aqueous and aqueous gel ballpoint pen inks. Furthermore, it has been found that the bleeding resistance of the correction coating layer is improved by blending a predetermined amount of silica powder into the extender pigment, and the present invention has been achieved.
すなわち、本発明は下記のとおりである。 That is, the present invention is as follows.
１）紙又はプラスチックフィルムよりなる剥離基材の片面に、少なくとも修正被覆層と粘着層が順次積層されてなる感圧転写層を有する感圧転写修正テープにおいて、前記修正被覆層が、少なくとも顔料、体質顔料及びエチレン−酢酸ビニル共重合系樹脂エマルジョンを含む、水性分散液を用いて作製されていることを特徴とする感圧転写修正テープ。
２）体質顔料のうち、少なくとも２５重量％がシリカ粉末である、前記１）に記載の感圧転写修正テープ。
３）エチレン−酢酸ビニル共重合系樹脂のエチレン比率が５〜４５重量％である、前記１）または２）記載の感圧転写修正テープ。
４）エチレン−酢酸ビニル共重合系樹脂エマルジョンが、アニオン系乳化剤またはノニオン系乳化剤を含有するものである、前記１）〜３）のいずれか記載の感圧転写修正テープ。
1) In a pressure-sensitive transfer correction tape having a pressure-sensitive transfer layer in which at least a correction coating layer and an adhesive layer are sequentially laminated on one side of a release substrate made of paper or a plastic film, the correction coating layer includes at least a pigment, A pressure-sensitive transfer correction tape produced by using an aqueous dispersion containing an extender pigment and an ethylene-vinyl acetate copolymer resin emulsion.
2) The pressure-sensitive transfer correction tape according to 1), wherein at least 25% by weight of the extender pigment is silica powder.
3) The pressure-sensitive transfer correction tape according to 1) or 2) above, wherein the ethylene-vinyl acetate copolymer resin has an ethylene ratio of 5 to 45% by weight.
4) The pressure-sensitive transfer correction tape according to any one of 1) to 3) above, wherein the ethylene-vinyl acetate copolymer resin emulsion contains an anionic emulsifier or a nonionic emulsifier.
本発明によれば、剥離基材に対して修正被覆層インクを塗工する際に、修正被覆層インクをはじくことが無く修正被覆層インクを均一に塗工する事が可能であり、水性及び水性ゲルボールペンインクで修正被覆層に再筆記した際のボールペンインクの乾燥性、及び感圧転写修正テープにて文字などを隠蔽した後の耐ブリード性に優れる感圧転写修正テープを提供することができる。 According to the present invention, when applying the correction coating layer ink to the release substrate, the correction coating layer ink can be uniformly applied without repelling the correction coating layer ink. To provide a pressure-sensitive transfer correction tape excellent in drying property of a ball-point pen ink when rewritten on a correction coating layer with a water-based gel ballpoint pen ink and bleed resistance after concealing characters with a pressure-sensitive transfer correction tape. it can.
以下、本発明について詳細に説明する。
本発明の感圧転写修正テープは、剥離基材の片面に、少なくとも修正被覆層と粘着層が順次積層されてなる感圧転写層を有する感圧転写修正テープにおいて、前記修正被覆層が、少なくとも顔料、体質顔料、及びバインダー樹脂としてエチレン−酢酸ビニル共重合（以下、ＥＶＡと称する。）系樹脂エマルジョンを含む水性分散液を用いて作製されていることを特徴とするものである。
Hereinafter, the present invention will be described in detail.
The pressure-sensitive transfer correction tape of the present invention is a pressure-sensitive transfer correction tape having a pressure-sensitive transfer layer formed by sequentially laminating at least a correction coating layer and an adhesive layer on one side of a release substrate, wherein the correction coating layer is at least It is produced using an aqueous dispersion containing an ethylene-vinyl acetate copolymer (hereinafter referred to as EVA) resin emulsion as a pigment, an extender pigment, and a binder resin.
ＥＶＡ系樹脂エマルジョンは、乳化剤の存在下で、少なくともエチレンと酢酸ビニルを含有するモノマーを共重合することにより得られる。乳化剤としては、ヒドロキシエチルセルロース、メチルセルロース、カルボキシメチルセルロースなどのセルロース誘導体やポリビニルアルコール（ＰＶＡ）、変性ＰＶＡなどの高分子系乳化剤、ノニオン系界面活性剤、アニオン系界面活性剤、カチオン系界面活性剤などが、１種単独で、または２種以上組み合わせて用いられる。
この中でも、顔料や体質顔料に対する分散安定性を考慮すると、高分子系乳化剤またはノニオン系もしくはアニオン系界面活性剤を含有するＥＶＡ系樹脂エマルジョンが好ましい。ＥＶＡ系樹脂粒子荷電のイオン性としては、ノニオンまたはアニオンが好ましく、ノニオンがより好ましい。特に、乳化剤として、ＰＶＡを単独使用、または、ＰＶＡやヒドロキシエチルセルロースとノニオン系界面活性剤とを併用して製造される、ＥＶＡ系樹脂エマルジョンは、耐凝集性に優れている点で好ましい。
The EVA resin emulsion can be obtained by copolymerizing monomers containing at least ethylene and vinyl acetate in the presence of an emulsifier. Examples of emulsifiers include cellulose derivatives such as hydroxyethyl cellulose, methyl cellulose, and carboxymethyl cellulose, polymer emulsifiers such as polyvinyl alcohol (PVA) and modified PVA, nonionic surfactants, anionic surfactants, and cationic surfactants. It is used individually by 1 type or in combination of 2 or more types.
Among these, considering the dispersion stability with respect to pigments and extender pigments, EVA resin emulsions containing a polymer emulsifier or a nonionic or anionic surfactant are preferred. The ionicity of the EVA resin particle charge is preferably nonion or anion, and more preferably nonion. In particular, an EVA resin emulsion produced by using PVA alone or in combination with PVA or hydroxyethyl cellulose and a nonionic surfactant as an emulsifier is preferable in terms of excellent aggregation resistance.
バインダー樹脂としてＥＶＡ系樹脂エマルジョンを用いた水性分散液は、塗膜形成時に顔料や体質顔料が凝集することなく、剥離基材に塗工する際にはじきがない点で優れている。これにより、隠蔽性が良好な高品質の感圧転写修正テープを得ることができる。 An aqueous dispersion using an EVA resin emulsion as a binder resin is excellent in that the pigment and extender pigment do not aggregate when forming a coating film, and there is no repellency when applied to a release substrate. As a result, a high-quality pressure-sensitive transfer correction tape with good concealability can be obtained.
ＥＶＡ系樹脂としては、エチレン比率が５〜４５重量％の範囲が好ましく、１５〜４０重量％の範囲がより好ましい。エチレンが含まれることによって剥離基材の離型層に対する親和性が向上することで、塗工時に均一な塗膜を得ることが出来る。ＥＶＡ系樹脂のガラス転移温度（Ｔｇ）は、約１０℃〜−３０℃の範囲にあることが、修正被覆層上にボールペンなどで再筆記した際のボールペンインクの良好な乾燥性が得られる点で好ましい。 The EVA resin preferably has an ethylene ratio in the range of 5 to 45% by weight, more preferably 15 to 40% by weight. By including ethylene, the affinity of the release substrate for the release layer is improved, so that a uniform coating film can be obtained during coating. The glass transition temperature (Tg) of the EVA resin is in the range of about 10 ° C. to −30 ° C., so that good drying property of the ball-point pen ink can be obtained when rewriting with a ball-point pen on the correction coating layer. Is preferable.
ＥＶＡ系樹脂エマルジョンは、市販品を使用することができ、例えば、スミカフレックス４００、４０８、４１０、５１０、９０１ＨＬ（以上、住化ケムテックス（株）製）、パンフレックス４０００ＮＴ、パンフレックス５５００ＮＴ（以上、（株）クラレ製）、アクアテックスＥＣ−１２００、ＥＣ−１４００、ＥＣ−１７００、ＥＣ−３５００（ジャパンケムテックス（株）製）、デンカＥＶＡテックス５０、７０、７７Ｈ、９０、１００（電気化学工業（株）製）などが挙げられる。一般的には、固形分５０〜６０重量％程度の水性樹脂エマルジョンとして販売されている。ＥＶＡ系樹脂エマルジョンの中でも、イオン性がカチオン以外のものが好ましい。その他所望に応じ、アクリル系、ロジンエステル系、テルペンフェノール系などの樹脂エマルジョンを本発明の目的を損なわない範囲で適宜選択して併用することができる。 A commercially available product can be used as the EVA resin emulsion. Kuraray Co., Ltd.), Aquatex EC-1200, EC-1400, EC-1700, EC-3500 (Japan Chemtex Co., Ltd.), Denka EVA-Tex 50, 70, 77H, 90, 100 (Electrochemical Industry) Etc.). Generally, it is sold as an aqueous resin emulsion having a solid content of about 50 to 60% by weight. Among EVA resin emulsions, those having ionic properties other than cations are preferred. In addition, an acrylic resin, a rosin ester resin, a terpene phenol resin, etc. can be appropriately selected and used in combination as long as the object of the present invention is not impaired.
修正被覆層を作製するための水性分散液は、少なくとも顔料、体質顔料及びＥＶＡ系樹脂エマルジョンを含む。水性分散液中におけるＥＶＡ系樹脂エマルジョンの比率は、当該組成物全量に対して、固形分換算で、３０重量％以下が好ましく、より好ましくは１５〜５重量％である。３０重量％以下であれば、顔料や体質顔料との混和性に優れたものとなる。また、５重量％以上であれば、接着性、柔軟性、強靭性に優れる樹脂となるため、塗膜のひび割れや亀裂を生じにくい良好な塗膜を得ることが出来る。 The aqueous dispersion for producing the correction coating layer contains at least a pigment, an extender pigment, and an EVA resin emulsion. The ratio of the EVA resin emulsion in the aqueous dispersion is preferably 30% by weight or less, more preferably 15 to 5% by weight, in terms of solid content, with respect to the total amount of the composition. If it is 30% by weight or less, it becomes excellent in miscibility with pigments and extender pigments. Moreover, since it will become resin excellent in adhesiveness, a softness | flexibility, and toughness if it is 5 weight% or more, the favorable coating film which is hard to produce the crack of a coating film and a crack can be obtained.
上記の顔料としては、二酸化チタンなどの高隠蔽性白顔料が好ましい。二酸化チタンとしては、高い隠蔽性を示すルチル型／アナターゼ型のいずれも用いることができる。具体的には、チタニックスＪＲ−３００、同ＪＲ−６００Ａ、同ＪＲ−８００、同ＪＲ−８０１（以上、テイカ（株）製）、タイピュアＲ−７０６、同Ｒ−９００、同Ｒ−９０１、同Ｒ−９３１（以上、デュポン・ジャパン・リミテッド社製）、タイトーンＳＲ−１、同Ｒ−３１０、同Ｒ−６５０、同Ｒ−３Ｌ、同Ａ−１１０、同Ａ−１５０、同Ｒ−５Ｎ（以上、堺化学工業（株）製）、タイペークＲ−５５０、同Ｒ−５８０、同Ｒ−６１５、同Ｒ−６３０、同Ｒ−８３０、同Ｒ−９３０、同Ａ−１００、同Ａ−２２０、同ＣＲ−５８（以上、石原産業（株）製）、クロノスＫＲ−３１０、同ＫＲ−３８０、同ＫＲ−４８０、同ＫＡ−１０、同ＫＡ−２０、同ＫＡ−３０（以上、チタン工業（株）製）、バイエルチタンＲ−ＦＤ−１、同Ｒ−ＦＤ−２、同Ｒ−ＦＢ−１、同Ｒ−ＦＢ−３、同Ｒ−ＫＢ−３、同Ｒ−ＣＫ−２０（以上、独国、バイエル社製）などが挙げられる。これらは単独あるいは複数混合して使用できる。 As the above-mentioned pigment, a high hiding white pigment such as titanium dioxide is preferable. As the titanium dioxide, any of rutile type / anatase type showing high concealability can be used. Specifically, Titanics JR-300, JR-600A, JR-800, JR-801 (above, manufactured by Teika), Taipure R-706, R-900, R-901, R-931 (manufactured by DuPont Japan Limited), Tytone SR-1, R-310, R-650, R-3L, A-110, A-150, R-5N (Made by Sakai Chemical Industry Co., Ltd.), Type R-550, R-580, R-615, R-630, R-830, R-930, R-930, A-100, A- 220, CR-58 (above, manufactured by Ishihara Sangyo Co., Ltd.), Kronos KR-310, KR-380, KR-480, KA-10, KA-20, KA-30 (above, titanium) Industrial Co., Ltd.), Bayer Titanium R-FD-1, R- D-2, the R-FB-1, the R-FB-3, the R-KB-3, the R-CK-20 (or more, Germany, manufactured by Bayer Co., Ltd.). These can be used alone or in combination.
体質顔料としては、シリカ粉末、炭酸カルシウム、ケイ酸アルミニウム、アルミノケイ酸塩、炭酸マグネシウム、タルク、クレーなどを適宜組み合わせて用いることができる。
具体的には、シリカ粉末として、ＧＡＳＩＬシリカＨＰ５６０、同ＨＰ８８０、同ＵＶ５５ｃ、同ＨＰ２３０、同２３Ｆ、ＨＰ２７０(以上、ウイルバー・エリス（株）製)、ＭＩＺＵＫＡＳＩＬ Ｐ−８０３、同Ｐ−５０、同Ｐ−７３、同Ｐ−７８Ｆ、同Ｐ−７８Ａ、同Ｐ−７０７、同Ｐ−７０（以上、水澤化学工業（株））、サイリシア３５０、同３８０、同４３０、同４５０、同５５０（以上、富士シリシア化学（株）製）、サンスフェアＨ−１２２、同Ｈ−３３、同Ｈ−５３（以上、ＡＧＣエスアイテック（株）製）などが挙げられ、ケイ酸アルミニウムとして、キョーワード７００（協和化学工業（株）製）などが挙げられ、アルミノケイ酸塩として、アルミニウムシリケートＰ−８２０、同Ｐ−８２０Ａ（以上、独国、デグッサ社製）などが挙げられ、炭酸マグネシウムとして、軽質炭酸マグネシウム（協和化学工業（株）製）、炭酸マグネシウムＴＴ（ナイカイ塩業（株）製）などが挙げられる。これらは単独あるいは２種以上混合して使用できる。
As extender pigments, silica powder, calcium carbonate, aluminum silicate, aluminosilicate, magnesium carbonate, talc, clay and the like can be used in appropriate combination.
Specifically, GASIL silica HP560, HP880, UV55c, HP230, 23F, HP270 (above, manufactured by Wilber Ellis Co., Ltd.), MIZUKASIL P-803, P-50, P -73, P-78F, P-78A, P-707, P-70 (above, Mizusawa Chemical Co., Ltd.), Sirisia 350, 380, 430, 450, 550 (above, FUJI SILICIA CHEMICAL CO., LTD.), Sunsphere H-122, H-33, H-53 (above, manufactured by AGC S-Tech Co., Ltd.), and the like. Chemical Industry Co., Ltd.) and the like, and aluminum silicate P-820, P-820A (above, Degussa, Germany) And the like, as magnesium carbonate (manufactured by Kyowa Chemical Industry Co.) magnesium Light carbonate, magnesium carbonate TT (manufactured by inner bounds salt industry Co.), and the like. These can be used alone or in admixture of two or more.
顔料及び体質顔料は、水性分散液全量に対して合計で、２０重量％以上、好ましくは３０〜４０重量％含むことが好ましい。顔料及び体質顔料が２０重量％で以上あれば、十分な修正被覆層の隠蔽性を得ることができ、４０重量％以下であれば、塗膜形成性が良好となる。 The total amount of the pigment and extender is preferably 20% by weight or more, preferably 30 to 40% by weight, based on the total amount of the aqueous dispersion. If the pigment and extender pigment are 20% by weight or more, sufficient concealing property of the modified coating layer can be obtained, and if it is 40% by weight or less, the coating film formability is good.
また、体質顔料は、シリカ粉末を、体質顔料全量の２５重量％以上含むことが好ましく、３０重量％以上含むことがより好ましく、５０重量％以上含むことが特に好ましい。これにより、修正被覆層の耐ブリード性が顕著に向上する。この理由としては、シリカ粉末を含むことによって、多孔質であるシリカ表面中にブリードするインクを取り込むことができるためと推定する。シリカ粉末は、親水性のものが好適であり、粒子径は３〜２０μｍ程度が好ましい。
体質顔料は、水性分散液全量に対して、５重量％以上、好ましくは５〜２０重量％含むことが好ましい。体質顔料が５重量％未満の場合は修正被覆層の表面が平滑となりすぎ、基材に順次積層された修正被覆層と粘着層が剥離基材背面に移行する、ブロッキング現象が生じる恐れがあり、２０重量％を超える場合は相対的な顔料比率が小さくなるため、修正被覆層の隠蔽性が不十分となる恐れがある。
The extender pigment preferably contains 25% by weight or more of silica powder, more preferably 30% by weight or more, and particularly preferably 50% by weight or more of the total amount of extender pigment. Thereby, the bleed resistance of the correction coating layer is remarkably improved. The reason for this is presumed that the ink that bleeds can be taken into the porous silica surface by including the silica powder. The silica powder is preferably hydrophilic and the particle diameter is preferably about 3 to 20 μm.
The extender pigment is contained in an amount of 5% by weight or more, preferably 5 to 20% by weight, based on the total amount of the aqueous dispersion. When the extender pigment is less than 5% by weight, the surface of the correction coating layer becomes too smooth, and the correction coating layer and the adhesive layer sequentially laminated on the base material may move to the back surface of the peeling base material, which may cause a blocking phenomenon. When it exceeds 20% by weight, the relative pigment ratio becomes small, so that the concealability of the modified coating layer may be insufficient.
上記の水性分散液は、前記した成分の他に、顔料分散剤を含有していてもよい。顔料分散剤は、二酸化チタンや体質顔料の分散性を向上させるもので、使用する顔料の種類に合わせて公知の水溶性樹脂や各種界面活性剤などを選択し使用する。水溶性樹脂としては、アクリル酸、メタクリル酸、マレイン酸、イタコン酸などの不飽和カルボン酸又はそのアルキルエステルや、スチレン、アクリロニトリル、酢酸ビニルなどのモノマー群より選択して重合した合成高分子や、前記モノマー群より２種以上を選択して共重合した合成高分子を、アルカリ金属塩、アンモニウム塩、アミン塩の形態で使用するものなどが挙げられる。 The aqueous dispersion may contain a pigment dispersant in addition to the components described above. The pigment dispersant improves the dispersibility of titanium dioxide and extender pigments, and a known water-soluble resin or various surfactants are selected and used according to the type of pigment used. As the water-soluble resin, an unsaturated carboxylic acid such as acrylic acid, methacrylic acid, maleic acid, itaconic acid or an alkyl ester thereof, a synthetic polymer selected and polymerized from a monomer group such as styrene, acrylonitrile, vinyl acetate, Examples include those in which a synthetic polymer obtained by copolymerizing at least two types selected from the monomer group is used in the form of an alkali metal salt, an ammonium salt, or an amine salt.
その他所望に応じ、エチルアルコール、イソプロピルアルコールなどの乾燥促進剤や、ベンゾトリアゾール、エチレンジアミン四酢酸塩などの防錆剤や、尿素、エチレン尿素などの湿潤剤や、ベンゾチアゾリン系、オマジン系などの防腐剤や、シリコ−ン系、アクリル系などの消泡剤や、フッ素系界面活性剤などのレベリング剤など、種々の添加剤やカーボンブラック、酸化鉄、コバルトブルー、群青、クロムグリーン、酸化クロムなどの無機顔料や有機顔料、金属粉顔料、無機蛍光顔料、有機蛍光顔料、着色樹脂粉、着色樹脂球、加工顔料など、種々の着色剤を本発明の目的を損なわない範囲で適宜選択して使用することができる。 Other drying accelerators such as ethyl alcohol and isopropyl alcohol, rust preventives such as benzotriazole and ethylenediaminetetraacetate, wetting agents such as urea and ethyleneurea, and antiseptics such as benzothiazoline and omazine Various additives such as chemicals, antifoaming agents such as silicones and acrylics, leveling agents such as fluorosurfactants, carbon black, iron oxide, cobalt blue, ultramarine, chrome green, chromium oxide, etc. Various colorants such as inorganic pigments and organic pigments, metal powder pigments, inorganic fluorescent pigments, organic fluorescent pigments, colored resin powders, colored resin spheres, processed pigments, etc. are appropriately selected and used within the range not impairing the object of the present invention. can do.
水性分散液における樹脂エマルジョン中に含まれる水分量を除いた水の量は、３０〜６０重量％であることが好ましく、さらに好ましくは３０〜５０重量％である。 The amount of water excluding the amount of water contained in the resin emulsion in the aqueous dispersion is preferably 30 to 60% by weight, more preferably 30 to 50% by weight.
水性分散液を調製する場合は、例えば、顔料、体質顔料、顔料分散剤、水、消泡剤、その他所望に応じて加えられる各種添加剤を、所定の割合で混合して一旦ディスパーザーなどの分散機を用いて分散させ、次いでこれをサンドミルやビーズミルなどの混合分散機を用いてさらに混合分散させた後、ＥＶＡ系樹脂エマルジョンを添加して調製する。 When preparing an aqueous dispersion, for example, pigments, extender pigments, pigment dispersants, water, antifoaming agents, and other various additives that are added as desired are mixed at a predetermined ratio and once dispersed. This is dispersed using a disperser and then further mixed and dispersed using a mixing disperser such as a sand mill or a bead mill, and then prepared by adding an EVA resin emulsion.
本発明の感圧転写修正テープは剥離基材の片面に、少なくとも水性分散液（修正被覆層インク）と粘着剤を通常の方法により順次塗工・乾燥させて製造することができる。 The pressure-sensitive transfer correction tape of the present invention can be produced by sequentially applying and drying at least an aqueous dispersion (correction coating layer ink) and an adhesive on one side of a release substrate by a usual method.
本発明の感圧転写修正テープを構成する剥離基材としては、自動巻取り機構をもつ転写具に適合する曲げ剛性を有するプラスチックフィルムまたは紙が好ましい。プラスチックフィルムとしては、例えば、ポリエチレンテレフタレートなどのポリエステルフィルム、ポリプロピレンやポリエチレンなどのポリオレフィンフィルムを挙げることができる。剥離基材の厚さは３〜３０μｍが好ましい。剥離基材の片面もしくは両面には、所望に応じてシリコーン樹脂や無機あるいは有機顔料を分散させたシリコーン樹脂などの離型層が形成されている。 As the peeling substrate constituting the pressure-sensitive transfer correction tape of the present invention, a plastic film or paper having a bending rigidity suitable for a transfer tool having an automatic winding mechanism is preferable. Examples of the plastic film include polyester films such as polyethylene terephthalate and polyolefin films such as polypropylene and polyethylene. As for the thickness of a peeling base material, 3-30 micrometers is preferable. A release layer such as a silicone resin or a silicone resin in which an inorganic or organic pigment is dispersed is formed on one side or both sides of the release substrate as desired.
修正被覆層は、前記水性分散液を剥離基材の片面に塗工、乾燥することにより形成される。修正被覆層の厚さは乾燥後において、修正時における隠蔽性を確保するために１０〜３０μｍが好ましい。剥離基材と修正被覆層の厚さの比率は、特に限定されないが、一般的には１：０．４〜１：４．２の範囲に調整することが好ましい。 The correction coating layer is formed by coating the aqueous dispersion on one side of the release substrate and drying. The thickness of the correction coating layer is preferably 10 to 30 μm in order to ensure the concealability during correction after drying. The ratio of the thickness of the release substrate and the correction coating layer is not particularly limited, but it is generally preferable to adjust the thickness to a range of 1: 0.4 to 1: 4.2.
粘着層は、粘着剤を従来公知の方法で塗工することにより形成される。粘着剤としては公知のものを全て使用することができ、例えば、アクリル樹脂系、ロジン系、ゴム系、ビニル系などの粘着剤を挙げることができる。これらの粘着剤は溶剤系でも水性でも何れでも良いが、樹脂エマルジョン系が好ましく、特にアクリル樹脂エマルジョン系粘着剤が好ましい。粘着層の厚さは乾燥後において０．３〜５μｍ程度が適当である。 The pressure-sensitive adhesive layer is formed by applying a pressure-sensitive adhesive by a conventionally known method. As the pressure-sensitive adhesive, all known ones can be used, and examples thereof include acrylic resin-based, rosin-based, rubber-based, and vinyl-based pressure-sensitive adhesives. These pressure-sensitive adhesives may be either solvent-based or water-based, but a resin emulsion system is preferable, and an acrylic resin emulsion-based pressure-sensitive adhesive is particularly preferable. The thickness of the adhesive layer is suitably about 0.3 to 5 μm after drying.
以下、実施例及び比較例を用いて本発明を更に具体的に説明するが、本発明は以下の実施例のみに限定されるものではない。 Hereinafter, the present invention will be described more specifically with reference to Examples and Comparative Examples, but the present invention is not limited to only the following Examples.
（実施例１〜１４及び比較例１〜２）
下記表１に示す各組成（数値は重量％）に従い、顔料分散剤、消泡剤と水を混合させた後、二酸化チタン、体質顔料を加えて攪拌し、その後ディスパーザーにて１０分間分散させ、ミルベースとした。これをビーズミルにて５分間分散させた後、樹脂エマルジョン、表面調整剤を加えて混合攪拌し、感圧転写修正テープの修正被覆層を形成させるための水性分散液（修正被覆層インク）を調製した。
(Examples 1-14 and Comparative Examples 1-2)
According to each composition shown in the following Table 1 (the numerical value is% by weight), a pigment dispersant, an antifoaming agent and water are mixed, then titanium dioxide and extender pigment are added and stirred, and then dispersed with a disperser for 10 minutes. The mill base was used. After this is dispersed for 5 minutes in a bead mill, a resin emulsion and a surface conditioner are added and mixed and stirred to prepare an aqueous dispersion (corrected coating layer ink) for forming a corrected coating layer of a pressure-sensitive transfer correction tape. did.
得られた水性分散液（修正被覆層インク）を、厚さ１２μｍのポリエチレンテレフタレートフィルムよりなる剥離基材上にアプリケーターを使用して乾燥後の厚みが２０〜３０μｍになるように塗工・乾燥し、得られた修正被覆層に市販のアクリルエマルジョン粘着剤をバーコーターを使用して乾燥後の厚みが０．５〜０．８μｍになるように塗工・乾燥し、感圧転写修正テープを得た。 The obtained aqueous dispersion (corrected coating layer ink) is coated and dried using an applicator on a release substrate made of a polyethylene terephthalate film having a thickness of 12 μm so that the thickness after drying becomes 20 to 30 μm. Apply a commercially available acrylic emulsion adhesive to the modified coating layer using a bar coater and dry it to a thickness of 0.5 to 0.8 μm after drying to obtain a pressure-sensitive transfer correction tape. It was.
得られた感圧転写修正テープを裁断小巻し、５ｍｍ幅、１０ｍのロール状に巻きつけ市販の感圧転写修正テープカセット（ＣＴ−ＣＣ５：トンボ鉛筆社製）に装填した。感圧転写修正テープについて下記の方法で性能を評価した。 The obtained pressure-sensitive transfer correction tape was cut into small rolls, wound into a 5 mm width and 10 m roll, and loaded into a commercially available pressure-sensitive transfer correction tape cassette (CT-CC5: manufactured by Dragonfly Pencil Co., Ltd.). The performance of the pressure-sensitive transfer correction tape was evaluated by the following method.
（１）塗工性の評価
前記「得られた水性分散液（修正被覆層インク）を、厚さ１２μｍのポリエチレンテレフタレートフィルムよりなる剥離基材上にアプリケーターを使用して乾燥後の厚みが２０〜３０μｍになるように塗工・乾燥」した際の塗膜の状態を目視にて観察し、下記の通り評価した。
○：ムラのない均一な塗膜であった。
△：ムラがあり不均一な塗膜であった。
×：塗膜に抜け（インクがはじかれて塗工されていない箇所）が生じていた。
(1) Evaluation of coating property The above-mentioned “obtained aqueous dispersion (modified coating layer ink) is dried on a release substrate made of a polyethylene terephthalate film having a thickness of 12 μm, and the thickness after drying is 20 to 20 μm. The state of the coating film at the time of “coating / drying to 30 μm” was visually observed and evaluated as follows.
A: A uniform coating film with no unevenness.
Δ: Uneven coating film with unevenness.
X: The coating film was missing (a portion where ink was repelled and not applied).
（２）乾燥性の評価
感圧転写修正テープをＰＰＣ用紙に転写し、水性ゲルボールペン（Ｇ−２：パイロットコーポレーション社製、ボール径０．７、インク色・ブラック）を用いて修正被覆層上に筆記し、３秒後に消しゴムで筆記線表面を擦り、擦った後の筆記線の伸び長さを測定し、その伸び長さから下記の通りに評価した。
○：筆記線の伸び長さが５ｍｍ未満。
△：筆記線の伸び長さが５ｍｍ以上１０ｍｍ未満。
×：筆記線の伸び長さが１０ｍｍ以上。
(2) Evaluation of drying property A pressure-sensitive transfer correction tape is transferred to PPC paper, and on the correction coating layer using an aqueous gel ballpoint pen (G-2: manufactured by Pilot Corporation, ball diameter 0.7, ink color / black). The surface of the writing line was rubbed with an eraser after 3 seconds, and the elongation length of the writing line after rubbing was measured, and the elongation length was evaluated as follows.
○: The extension length of the writing line is less than 5 mm.
(Triangle | delta): The elongation length of a writing line is 5 mm or more and less than 10 mm.
X: The extension length of a writing line is 10 mm or more.
（３）耐ブリード性の評価
筆記具にてＰＰＣ用紙に直線を筆記した筆記線の上に、感圧転写修正テープを転写し、常温で２年間保管、またはそれに相当する促進条件にて保管し、下から修正被覆層表面に浮き出た筆記線を目視にて観察し、評価した。前記筆記具は、油性ボールペン（ジェットストリームスタンダード ０．７ｍｍ 黒：三菱鉛筆社製）、水性マーキングペン（プレイカラー２：トンボ鉛筆社製）、油性マーキングペン（モノツイン：トンボ鉛筆社製）の３種類（いずれもインク色は黒色）を使用した。
○：いずれの筆記具でも筆記線が浮き出なかった。
△：１〜２種類の筆記具で筆記線が浮き出ていた。
×：３種類の筆記具で筆記線が浮き出ていた。
(3) Evaluation of bleed resistance A pressure-sensitive transfer correction tape is transferred onto a writing line in which a straight line is written on a PPC paper with a writing instrument, and stored at room temperature for 2 years, or stored under an equivalent acceleration condition. The writing lines that emerged from the bottom on the surface of the modified coating layer were visually observed and evaluated. There are three types of writing instruments: oil-based ballpoint pens (jet stream standard 0.7 mm black: manufactured by Mitsubishi Pencil Co., Ltd.), water-based marking pens (play color 2: manufactured by Dragonfly Pencil Co., Ltd.), and oil-based marking pens (mono twin: manufactured by Dragonfly Pencil Co., Ltd.) In either case, the ink color was black.
○: The writing line did not come out with any writing instrument.
(Triangle | delta): The writing line rose with 1-2 types of writing implements.
X: A writing line was raised with three types of writing instruments.
上記試験の結果を表１に示す。表２は配合成分の詳細である。 The results of the above test are shown in Table 1. Table 2 details the ingredients.
表１の評価結果から、本発明の感圧転写修正テープは、バインダー樹脂として、エチレン−酢酸ビニル共重合系樹脂エマルジョンを用いているため、塗工時に水性分散液が剥離基材にはじくこと無く均一な塗膜を得ることができ、水性及び水性ゲルボールペンインクで修正被覆層に再筆記した際のボールペンインクの乾燥性に優れていることがわかる。また、シリカ粉末を用いることにより、耐ブリード性が向上することがわかる。
一方、バインダー樹脂としてアクリル系樹脂エマルジョンを用いた、比較例１及び比較例２の感圧修正テープは、水性及び水性ゲルボールペンインクで修正被覆層に再筆記した際のボールペンインクの乾燥性が劣っていることがわかる。
From the evaluation results in Table 1, the pressure-sensitive transfer correction tape of the present invention uses an ethylene-vinyl acetate copolymer resin emulsion as the binder resin, so that the aqueous dispersion does not repel the release substrate during coating. It can be seen that a uniform coating film can be obtained, and that the ball-point pen ink is excellent in drying property when rewritten on the correction coating layer with water-based and water-based gel ball-point pen ink. Moreover, it turns out that bleed resistance improves by using a silica powder.
On the other hand, the pressure-sensitive correction tapes of Comparative Examples 1 and 2 using an acrylic resin emulsion as a binder resin have poor drying characteristics of the ballpoint pen ink when rewritten on the correction coating layer with the aqueous and aqueous gel ballpoint pen inks. You can see that
Claims (4)
The pressure-sensitive transfer correction tape according to any one of claims 1 to 3, wherein the ethylene-vinyl acetate copolymer resin emulsion contains an anionic emulsifier or a nonionic emulsifier.
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| JPS63312829A (en) * | 1987-06-09 | 1988-12-21 | 大連化学工業股ふん有限公司 | Manufacture of laminate |
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