JP5752957B2 - Chromatic colored releasable pressure-sensitive recording paper and method for producing the same - Google Patents
Chromatic colored releasable pressure-sensitive recording paper and method for producing the same Download PDFInfo
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Landscapes
- Credit Cards Or The Like (AREA)
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Description
本発明は着色顔料によって表層を色付けした記録用紙で、色付けされた表層に色ムラが無く、更に記録用紙が通常状態では接着することがなく、加圧によって接着し、且つ必要時には再剥離することが可能な色付き再剥離性圧着記録用紙に関するものである。 The present invention is a recording paper whose surface layer is colored with a color pigment, the colored surface layer has no color unevenness, and the recording paper does not adhere in a normal state, adheres by pressure, and peels again when necessary. The present invention relates to a colored releasable pressure-sensitive recording paper that can be used.
銀行、クレジット会社、保険会社、官庁などから各個人宛に貯金、残金状況など個人情報を通知する手段として、再剥離性圧着記録用紙を用いた親展葉書が普及している。親展葉書は基材に感圧接着剤を塗布した後、共通情報はオフセット印刷、グラビア印刷などで行い、個人情報はレーザービーム方式、インクジェット方式などで印刷した後、印刷面同士を適度の圧力を加えることで接着させ、各個人に郵送された後、再剥離することで情報を得ることができる。 Confidential postcards using releasable pressure-sensitive recording sheets have become widespread as means for notifying personal information such as savings and balances from banks, credit companies, insurance companies, government agencies, etc. to each individual. For confidential postcards, pressure sensitive adhesive is applied to the substrate, common information is printed by offset printing, gravure printing, etc., personal information is printed by laser beam method, ink jet method, etc. It is possible to obtain information by adhering by adding, mailing to each individual, and then re-peeling.
近年、再剥離性圧着記録用紙は、商品紹介のダイレクトメールや銀行、保険の個人向けの親展葉書であっても、個人情報以外の部分には新商品の情報を乗せるなど、その利用分野は秘匿情報の通知書の域を超えて広がりを見せている。これには、従来の印刷機に変わって、インクジェットやレーザービーム方式でのフルカラー印刷ができるデジタル印刷機の普及が始まったことが挙げられる。デジタル印刷機は、従来のオフセット印刷の様に製版に拠らないため、印刷機とは異なり、小ロットで個別の図柄印刷が可能となっている。 In recent years, the use of releasable pressure-sensitive recording paper, such as direct mail for product introductions and private postcards for individuals of banks and insurance, has been kept secret, such as placing information on new products on parts other than personal information. It is expanding beyond the information notice. This is because the spread of digital printing machines capable of full color printing by ink jet or laser beam method has begun instead of conventional printing machines. Since the digital printing machine does not depend on the plate making like the conventional offset printing, unlike the printing machine, it is possible to print individual symbols in a small lot.
しかし、この中で従来の親展葉書に用いられる再剥離性の圧着記録用紙は、白色を基調とするものや、隠蔽性を向上させるためにチタンなどの隠蔽性の強い顔料や黒顔料などを配合して不透明度を改善するものである(例えば、特許文献1又は2を参照。)。 However, among these, the releasable pressure-sensitive recording paper used in conventional confidential postcards is based on white, and contains a highly concealed pigment such as titanium or black pigment to improve the concealability. Thus, the opacity is improved (for example, see Patent Document 1 or 2).
着色する方法としては、従来の未着色のインクジェット用紙に着色したオーバーコート剤を塗布し、着色する方法がある程度である(例えば、特許文献3を参照。)。またインクジェット紙の表面に網点印刷をする方法が挙げられている(例えば、特許文献4を参照。)。 As a method of coloring, there is a method of applying a colored overcoat agent to a conventional uncolored inkjet paper and coloring it to some extent (see, for example, Patent Document 3). In addition, there is a method of halftone printing on the surface of ink jet paper (see, for example, Patent Document 4).
特許文献1又は2に記載の技術のように、再剥離性圧着記録シートは、白色を基調とし、また不透明度を改善するものがほとんどであるから、これまで商品イメージや季節感を考慮した色付きの再剥離性圧着記録シートは皆無であった。また、特許文献2の様に隠蔽性付与を目的に黒顔料や黒染料で着色した場合、親展葉書の個人情報は黒のインクやトナーで印字されることから、個人情報の視認性が著しく低下する。ここで言う視認性の低下とは、圧着記録用紙の色と個人情報である黒インク乃至は黒トナーとの色差に起因するものであり、圧着記録用紙の白色度の低下よりも明度指数Lの低下に起因するものである。 As in the technique described in Patent Document 1 or 2, re-peelable pressure-sensitive recording sheets are mostly based on white color and improve opacity. There was no re-peelable pressure-sensitive recording sheet. In addition, when black pigment or black dye is used for the purpose of providing concealment as in Patent Document 2, the personal information on the confidential postcard is printed with black ink or toner, so the visibility of the personal information is significantly reduced. To do. The reduction in visibility referred to here is caused by the color difference between the color of the pressure-sensitive recording paper and the black ink or black toner, which is personal information, and the brightness index L is lower than the decrease in the whiteness of the pressure-sensitive recording paper. This is due to the decline.
また、特許文献3の着色する方法では色ムラになり易く、更に着色が別工程であることからコスト的にも不経済である。特許文献4の方法に従って、網点印刷で全面に色を付けた場合、印刷面同士では親展葉書の圧着力が低下し、親展葉書として用いることができない。 Further, the coloring method of Patent Document 3 is liable to cause color unevenness, and further, the coloring is a separate process, which is uneconomical. When the entire surface is colored by halftone printing according to the method of Patent Document 4, the pressure-bonding force of the confidential postcard is reduced between the printed surfaces and cannot be used as the confidential postcard.
さらに、前述のデジタル印刷機で全面に着色する場合、インクジェットタイプ、トナータイプ共に多量のインクを消費し不経済である。また、インクジェットタイプのデジタル印刷機では乾燥が間に合わず、印刷速度を低下させなければならない。 Further, when the entire surface is colored by the above-described digital printer, a large amount of ink is consumed for both the ink jet type and the toner type, which is uneconomical. In addition, in an ink jet type digital printer, drying is not in time, and the printing speed must be reduced.
記録媒体への色味付けの効果は様々なものがあるが、非特許文献1にも記載の通り、低コストで物に場、用途、人、意味、美というイメージを与え、商品を訴求できる効果がある。色の好みに関しては個人差があるが、色の与えるイメージや連想させるものは殆どの人に共通していると言われている。例えば色の寒暖として、暖色系は赤〜黄色、寒色系は青〜青紫が挙げられる。四季をイメージする色としては春「緑、桃」、夏「黄、青」、秋「橙、茶」、冬「赤、黒、白」、また色の連想作用としては赤「林檎、苺、情熱」、黄「レモン、バナナ、ひまわり」、緑「春、葉、草、森、芝生、スイカ」、橙「秋、蜜柑、柿、紅葉、夕焼け」、青「空、海、水」、茶「秋、落ち葉、土」、紫「葡萄、茄子、すみれ」などである。これらの色の与えるイメージから適切な色調を選択し、親展葉書やダイレクトメールなどに適用すれば、従来には無かった社会のニーズに応えることができ、一般再剥離性圧着記録紙にはない商品価値を安価に創生することができる。 Although there are various effects of coloring the recording medium, as described in Non-Patent Document 1, it is possible to give an image of place, use, person, meaning, beauty to an object at a low cost and to appeal the product There is. Although there are individual differences in color preferences, it is said that most people have the same image and associated color. For example, as the color temperature, the warm color system is red to yellow, and the cold color system is blue to blue purple. The colors that image the four seasons are spring “green, peach”, summer “yellow, blue”, autumn “orange, brown”, winter “red, black, white”, and color “association” with red “apple, amber, "Passion", yellow "lemon, banana, sunflower", green "spring, leaves, grass, forest, lawn, watermelon", orange "autumn, tangerine, persimmon, autumn leaves, sunset", blue "sky, sea, water", tea "Autumn, fallen leaves, soil", purple "red, coconut, violet". By selecting the appropriate color tone from the image given by these colors and applying it to confidential postcards and direct mail, it is possible to meet unprecedented social needs. Value can be created inexpensively.
本発明は有彩色に色調された再剥離性圧着記録用紙において色ムラが無く、生産性にも優れ、また受取人が意図的に剥す場合には均一で緻密な剥離感が得られスムーズに剥離できるとともに、有彩色に色調されていながら個人情報の視認性にも優れた色付き再剥離性圧着記録用紙及びその製造方法を提供することを目的とする。 In the present invention, there is no color unevenness in a releasable pressure-sensitive recording paper chromatically colored and excellent in productivity, and when the recipient intentionally peels off, a uniform and fine peeling feeling can be obtained and smooth peeling is achieved. Another object of the present invention is to provide a colored releasable pressure-sensitive recording sheet that has a chromatic color tone and is excellent in the visibility of personal information, and a method for producing the same.
本発明に係る有彩色の色付き再剥離性圧着記録用紙は、支持体の両面に常温、常圧の通常状態では粘着性、接着性を示さず、加圧時に接着性を示し、圧着後に再剥離可能である感圧接着層を形成した再剥離性感圧接着記録用紙において、
前記感圧接着層が、ノニオン性界面活性剤及び有彩色の着色顔料を含有し、かつ、条件1で求めたΔEが2以上となるように色付けされてなり、前記感圧接着層の条件1で求めた明度指数Lが88以上であり、(条件3)において、表面と裏面のいずれもΔE3の10点中少なくとも9点が0.2以下を満たすことを特徴とする。
(条件1)
JIS Z8722:2009「色の測定方法―反射及び透過物体色」で規定する測定方法に従い、JIS Z 8730:2009「色の表示方法―物体色の色差」で規定する明度指数L、知覚色度指数a及びbについて、前記支持体の表面及び前記感圧接着層の表面のそれぞれを測定する。前記支持体の表面の測定値をLx,ax,bxとし、前記感圧接着層の表面の測定値をL,a,bとするΔEは数1によって算出する。
(数1)ΔE=√((Lx−L)2+(ax−a)2+(bx−b)2)
(条件3)
用紙の幅方向沿って、5mm毎に10点、JIS Z8722:2009「色の測定方法―反射及び透過物体色」で規定する測定方法に従い、JIS Z 8730:2009「色の表示方法―物体色の色差」で規定する明度指数L、知覚色度指数a及びbについて表面と裏面のいずれも測定する。各々10点の測定値をL,a,bとし、この10点の平均値をLx,ax,bxとする。各々10点の測定値について、数4に従い、各々10点のΔE3を算出する。
(数4)ΔE3=√((Lx−L) 2 +(ax−a) 2 +(bx−b) 2 )
The chromatic colored releasable pressure-sensitive recording paper according to the present invention does not exhibit adhesiveness and adhesiveness at normal temperature and normal pressure on both sides of the support, exhibits adhesiveness when pressed, and re-peels after pressure bonding In a releasable pressure-sensitive adhesive recording paper on which a pressure-sensitive adhesive layer is formed,
The pressure-sensitive adhesive layer contains a nonionic surfactant and a chromatic coloring pigment, and is colored so that ΔE obtained in condition 1 is 2 or more. Condition 1 of the pressure-sensitive adhesive layer in Ri der luminosity index L is 88 or more as determined in (condition 3), at least 9 out of 10. the surface both the rear surface of ΔE3 is to satisfy the 0.2 or less.
(Condition 1)
According to JIS Z8722: 2009 "Color measurement method-Reflection and transmission object color", according to the measurement method JIS Z 8730: 2009 "Color display method-Color difference of object color", Lightness index L, Perceptual chromaticity index For a and b, the surface of the support and the surface of the pressure-sensitive adhesive layer are measured. ΔE where the measured values of the surface of the support are Lx, ax, bx and the measured values of the surface of the pressure-sensitive adhesive layer are L, a, b is calculated by Equation 1.
(Equation 1) ΔE = √ ((Lx−L) 2 + (ax−a) 2 + (bx−b) 2 )
(Condition 3)
10 points along the width direction of the paper, 10 points every 5 mm, according to JIS Z8722: 2009 "Color measurement method-Reflection and transmission object color", JIS Z 8730: 2009 "Color display method-Object color Both the front surface and the back surface are measured for the lightness index L and the perceptual chromaticity indices a and b defined by “color difference”. The measured values at 10 points are L, a, and b, respectively, and the average values at 10 points are Lx, ax, and bx. For each of 10 measured values, ΔE3 for 10 points is calculated according to Equation 4.
(Equation 4) ΔE3 = √ ((Lx−L) 2 + (ax−a) 2 + (bx−b) 2 )
本発明に係る有彩色の色付き再剥離性圧着記録用紙は、支持体の片面に常温、常圧の通常状態では粘着性、接着性を示さず、加圧時に接着性を示し、圧着後に再剥離可能である感圧接着層を形成し、前記支持体の反対面に非感圧接着層を形成してなる再剥離性感圧接着記録用紙において、前記感圧接着層及び前記非感圧接着層が、ノニオン性界面活性剤及び有彩色の着色顔料を含有し、かつ、条件2で求めたΔE1及びΔE2がいずれも2以上となるように色付けされてなり、前記感圧接着層の条件2で求めた明度指数L1が88以上であることを特徴とする。
(条件2)
JIS Z8722:2009「色の測定方法―反射及び透過物体色」で規定する測定方法に従い、JIS Z 8730:2009「色の表示方法―物体色の色差」で規定する明度指数L、知覚色度指数a及びbについて、前記支持体の表面、前記感圧接着層の表面及び前記非感圧接着層の表面のそれぞれを測定する。前記支持体の表面の測定値をLx,ax,bxとし、前記感圧接着層の表面の測定値をL1,a1,b1とし、前記非感圧接着層の表面の測定値をL2,a2,b2とし、ΔE1は数2によって算出し、ΔE2は数3によって算出する。
(数2)ΔE1=√((Lx−L1)2+(ax−a1)2+(bx−b1)2)
(数3)ΔE2=√((Lx−L2)2+(ax−a2)2+(bx−b2)2)
The chromatic colored releasable pressure-sensitive recording paper according to the present invention does not exhibit adhesiveness or adhesiveness at normal temperature and normal pressure on one side of a support, exhibits adhesiveness when pressed, and is re-peeled after pressure bonding In a releasable pressure-sensitive adhesive recording sheet formed by forming a pressure-sensitive adhesive layer that is possible and forming a non-pressure-sensitive adhesive layer on the opposite surface of the support, the pressure-sensitive adhesive layer and the non-pressure-sensitive adhesive layer are , Containing a nonionic surfactant and a chromatic coloring pigment, and colored so that ΔE1 and ΔE2 determined in Condition 2 are both 2 or more, and determined in Condition 2 of the pressure-sensitive adhesive layer. The lightness index L1 is 88 or more.
(Condition 2)
According to JIS Z8722: 2009 "Color measurement method-Reflection and transmission object color", according to the measurement method JIS Z 8730: 2009 "Color display method-Color difference of object color", Lightness index L, Perceptual chromaticity index For a and b, the surface of the support, the surface of the pressure-sensitive adhesive layer, and the surface of the non-pressure-sensitive adhesive layer are measured. The measured value of the surface of the support is Lx, ax, bx, the measured value of the surface of the pressure-sensitive adhesive layer is L1, a1, b1, and the measured value of the surface of the non-pressure-sensitive adhesive layer is L2, a2, b2, ΔE1 is calculated by Equation 2, and ΔE2 is calculated by Equation 3.
(Equation 2) ΔE1 = √ ((Lx−L1) 2 + (ax−a1) 2 + (bx−b1) 2 )
(Equation 3) ΔE2 = √ ((Lx−L2) 2 + (ax−a2) 2 + (bx−b2) 2 )
感圧接着層の表面の明度指数L又はL1が88以上であることによって、有彩色を有しながら親展情報・個人情報の視認性にも優れる。 When the lightness index L or L1 of the surface of the pressure-sensitive adhesive layer is 88 or more, the visibility of confidential information / personal information is excellent while having a chromatic color.
本発明に係る有彩色の色付き再剥離性圧着記録用紙、特に、支持体の片面に常温、常圧の通常状態では粘着性、接着性を示さず、加圧時に接着性を示し、圧着後に再剥離可能である感圧接着層を形成し、前記支持体の反対面に非感圧接着層を形成してなる再剥離性感圧接着記録用紙では、(条件3)において、表面と裏面のいずれもΔE3の10点中少なくとも9点が0.2以下を満たすことが好ましい。
(条件3)
用紙の幅方向沿って、5mm毎に10点、JIS Z8722:2009「色の測定方法―反射及び透過物体色」で規定する測定方法に従い、JIS Z 8730:2009「色の表示方法―物体色の色差」で規定する明度指数L、知覚色度指数a及びbについて表面と裏面のいずれも測定する。各々10点の測定値をL,a,bとし、この10点の平均値をLx,ax,bxとする。各々10点の測定値について、数4に従い、各々10点のΔE3を算出する。
(数4)ΔE3=√((Lx−L)2+(ax−a)2+(bx−b)2)
The chromatic colored releasable pressure-sensitive recording paper according to the present invention, in particular, does not exhibit adhesiveness or adhesiveness at normal temperature and normal pressure on one side of the support, exhibits adhesiveness when pressed, and is re-applied after pressing. In a releasable pressure-sensitive adhesive recording sheet in which a pressure-sensitive adhesive layer that can be peeled is formed and a non-pressure-sensitive adhesive layer is formed on the opposite surface of the support, It is preferable that at least 9 points out of 10 points of ΔE3 satisfy 0.2 or less.
(Condition 3)
10 points along the width direction of the paper, 10 points every 5 mm, according to JIS Z8722: 2009 "Color measurement method-Reflection and transmission object color", JIS Z 8730: 2009 "Color display method-Object color Both the front surface and the back surface are measured for the lightness index L and the perceptual chromaticity indices a and b defined by “color difference”. The measured values at 10 points are L, a, and b, respectively, and the average values at 10 points are Lx, ax, and bx. For each of 10 measured values, ΔE3 for 10 points is calculated according to Equation 4.
(Equation 4) ΔE3 = √ ((Lx−L) 2 + (ax−a) 2 + (bx−b) 2 )
本発明に係る有彩色の色付き再剥離性圧着記録用紙では、前記有彩色の着色顔料がノニオン性であることが好ましい。着色顔料が塗工液に含まれるときに凝集しにくく、その結果色ムラを生じにくい。 In the chromatic color releasable pressure-sensitive recording paper according to the present invention, the chromatic color pigment is preferably nonionic. When the color pigment is contained in the coating liquid, it hardly aggregates, and as a result, color unevenness hardly occurs.
本発明に係る有彩色の色付き再剥離性圧着記録用紙では、前記支持体が、着色剤を含有していないことが好ましい。色付きの支持体を何色も製造するよりも、着色剤を含まない白い支持体に色付き塗量を塗布した方が、製造工程上、安価に多色の製品に対応できる。 In the chromatic colored releasable pressure-sensitive recording paper according to the present invention, it is preferable that the support does not contain a colorant. Rather than producing a number of colored supports, applying a colored coating amount to a white support that does not contain a colorant can cope with multicolor products at low cost in the production process.
本発明に係る有彩色の色付き再剥離性圧着記録用紙の製造方法は、本発明に係る有彩色の色付き再剥離性圧着記録用紙の製造方法であって、前記ノニオン性界面活性剤及び前記有彩色の着色顔料を含有する塗工液を調製する工程と、前記支持体の表面に前記塗工液を塗工して、前記感圧接着層又は前記非感圧接着層を形成することを特徴とする。色ムラが生じにくく、かつ、生産効率が高く、剥離強度も得られやすい。 The method for producing a chromatic colored releasable pressure-sensitive recording sheet according to the present invention is a method for producing a chromatic colored releasable pressure-sensitive recording sheet according to the present invention, comprising the nonionic surfactant and the chromatic color. A step of preparing a coating liquid containing the coloring pigment, and coating the coating liquid on the surface of the support to form the pressure-sensitive adhesive layer or the non-pressure-sensitive adhesive layer. To do. Color unevenness hardly occurs, production efficiency is high, and peel strength is easily obtained.
本発明の有彩色に色調された再剥離性圧着記録用紙は、色ムラが無く、また受取人が意図的に剥す場合には均一で緻密な剥離感が得られスムーズに剥離できるとともに、有彩色に色調されていながら個人情報の視認性にも優れ、且つ高い生産性を有する。またダイレクトメールなどに適用すれば、従来には無かった社会のニーズに応えることができ、一般再剥離性圧着記録紙にはない商品価値を安価に創生することができる。 The releasable pressure-bonded recording paper toned in chromatic color according to the present invention has no color unevenness, and when the recipient intentionally peels it off, a uniform and dense peel feeling can be obtained and can be smoothly peeled off. In addition to being highly colored, it has excellent visibility of personal information and high productivity. Moreover, if it is applied to direct mail and the like, it is possible to meet social needs that have not existed before, and it is possible to create a commercial value that is not found in general releasable pressure-sensitive recording paper at a low cost.
次に本発明について実施形態を示して詳細に説明するが、本発明はこれらの記載に限定して解釈されない。本発明の効果を奏する限り、実施形態は種々の変形をしてもよい。 Next, the present invention will be described in detail with reference to embodiments, but the present invention is not construed as being limited to these descriptions. As long as the effect of the present invention is exhibited, the embodiment may be variously modified.
本発明の再剥離性圧着記録用紙は、好ましくは着色剤を含まず、無着色の支持体、より好ましくは、JIS P 8148:2001に準ずる白色度で78%以上ある支持体上の片面若しくは両面に感圧接着層を形成し得られる。また感圧接着層を片面にしか設けない場合は、もう一方の面に非感圧接着層を形成してなる再剥離性感圧接着記録用紙である。この再剥離性圧着記録用紙はフォーム用の紫外線硬化型印刷機などで固定情報が印刷された後、インクジェット方式や電子写真方式で可変情報が印字される。また前述のデジタル印刷機では固定情報と可変情報を同時に印字することが可能である。次いで二つ折りあるいは三つ折りされて主に葉書の形態で親展葉書、ダイレクトメールなどとして郵送される。 The releasable pressure-sensitive recording paper of the present invention preferably contains no colorant and is a non-colored support, more preferably one or both sides on a support having a whiteness of 78% or more according to JIS P 8148: 2001. A pressure-sensitive adhesive layer can be formed. When the pressure-sensitive adhesive layer is provided only on one side, it is a releasable pressure-sensitive adhesive recording sheet in which a non-pressure-sensitive adhesive layer is formed on the other side. This releasable pressure-sensitive recording sheet is printed with fixed information by an ultraviolet curable printing press for foam and the like, and then variable information is printed by an ink jet method or an electrophotographic method. The above-described digital printing machine can simultaneously print fixed information and variable information. Then it is folded in half or in three, and is mailed as a postcard, direct mail, etc. mainly in the form of a postcard.
感圧接着層は、常温、常圧の通常状態では粘着性、接着性を示さず、加圧時に接着性を示し、圧着後に再剥離可能である性質を有するものであり、充填剤と接着剤を主成分とし、感圧接着層形成用の塗工液は、主に二折り時の内面、三折り時の両面に塗布される。また非感圧接着層は、その用途によって主成分は異なるが、加圧時に接着性を示さず、非感圧接着層形成用の塗工液は、主に二折り時の外面として塗布される。感圧接着層形成用の塗工液及び非感圧接着層形成用の塗工液に有彩色の着色顔料を添加し、感圧接着層及び非感圧接着層有彩色に色調する。 The pressure-sensitive adhesive layer does not exhibit tackiness and adhesiveness under normal conditions of normal temperature and normal pressure, exhibits adhesiveness when pressed, and has the property of being removable after pressure bonding. Filler and adhesive The coating liquid for forming the pressure-sensitive adhesive layer is mainly applied to the inner surface when folded in two and both surfaces when folded in three. The main component of the non-pressure-sensitive adhesive layer is different depending on the application, but does not show adhesiveness when pressed, and the coating solution for forming the non-pressure-sensitive adhesive layer is mainly applied as the outer surface when folded in two. . A chromatic coloring pigment is added to the coating liquid for forming the pressure-sensitive adhesive layer and the coating liquid for forming the non-pressure-sensitive adhesive layer, and the color tone is changed to the chromatic color of the pressure-sensitive adhesive layer and the non-pressure-sensitive adhesive layer.
有彩色の着色顔料はノニオン性が好ましい。再剥離性圧着記録用紙に個人情報を記載する際、インクジェット方式のラインプリンターでは水性染料インクが多用されている。このため、水性染料インクを定着させる為にイオン性の強い薬品を感圧接着層、非感圧接着層に使用するため、イオン性を有する顔料は凝集し易く、色ムラの原因となる。また再剥離感圧記録層用の塗料には、前述した個人情報を記載するためのインクジェット方式インクジェットインクを吸収させる目的や、電子写真方式の場合ではトナー定着ロールのクリーニングに使用されるシリコンオイルで感圧接着力が低下することを防ぐ為に、これを吸収させる目的で無機充填剤を配合するが、一般に無機充填剤はイオン性を有する為、イオン性を有する着色顔料は凝集し易く、色ムラの原因となる。着色剤に染料を用いた場合は、保存性に劣り、光、熱、湿度などの環境条件によって退色が著しい。また複数の染料を配合した場合、染料間の退色度合いも異なることから短期の保管であっても色味の変動が問題となる。 The chromatic coloring pigment is preferably nonionic. When writing personal information on a releasable pressure-sensitive recording sheet, water-based dye inks are frequently used in inkjet line printers. For this reason, since a strong ionic chemical is used for the pressure-sensitive adhesive layer and the non-pressure-sensitive adhesive layer in order to fix the aqueous dye ink, the ionic pigment is likely to aggregate and cause color unevenness. The paint for the re-peeling pressure-sensitive recording layer is made of silicon oil used for the purpose of absorbing the inkjet ink for recording the personal information described above, or for cleaning the toner fixing roll in the case of electrophotography. In order to prevent the pressure-sensitive adhesive strength from being reduced, an inorganic filler is blended for the purpose of absorbing this. However, since inorganic fillers generally have ionic properties, ionic coloring pigments tend to aggregate and cause uneven color. Cause. When a dye is used as the colorant, the storage stability is inferior, and fading is significant depending on environmental conditions such as light, heat and humidity. In addition, when a plurality of dyes are blended, since the degree of fading between the dyes is different, variation in color becomes a problem even in short-term storage.
本実施形態では、感圧接着層形成用の塗工液と非感圧接着層形成用の塗工液とを直接着色顔料にて有彩色に色調し、支持体への塗工・乾燥後に、感圧接着層の条件1で求めた明度指数L又は感圧接着層の条件2で求めた明度指数L1を88以上とし、好ましくは89以上とする。 In the present embodiment, the coating liquid for forming the pressure-sensitive adhesive layer and the coating liquid for forming the non-pressure-sensitive adhesive layer are directly chromatically colored with a coloring pigment, and after coating and drying on the support, The lightness index L determined in Condition 1 of the pressure-sensitive adhesive layer or the lightness index L1 determined in Condition 2 of the pressure-sensitive adhesive layer is 88 or more, preferably 89 or more.
ここで、支持体の両面に感圧接着層を形成する場合、感圧接着層の条件1で求めた明度指数Lを求め、支持体の片面に感圧接着層を形成し、反対面に非感圧接着層を形成する場合、感圧接着層の条件2で求めた明度指数L1を求める。ここで、条件1及び条件2は次のとおりである。 Here, when forming a pressure-sensitive adhesive layer on both sides of the support, the lightness index L obtained under Condition 1 of the pressure-sensitive adhesive layer is obtained, the pressure-sensitive adhesive layer is formed on one side of the support, When forming the pressure-sensitive adhesive layer, the lightness index L1 obtained under condition 2 of the pressure-sensitive adhesive layer is obtained. Here, Condition 1 and Condition 2 are as follows.
(条件1)
JIS Z8722:2009「色の測定方法―反射及び透過物体色」で規定する測定方法に従い、JIS Z 8730:2009「色の表示方法―物体色の色差」で規定する明度指数L、知覚色度指数a及びbについて、前記支持体の表面及び前記感圧接着層の表面のそれぞれを測定する。前記支持体の表面の測定値をLx,ax,bxとし、前記感圧接着層の表面の測定値をL,a,bとする。ΔEは数1によって算出する。
(数1)ΔE=√((Lx−L)2+(ax−a)2+(bx−b)2)
(Condition 1)
According to JIS Z8722: 2009 "Color measurement method-Reflection and transmission object color", according to the measurement method JIS Z 8730: 2009 "Color display method-Color difference of object color", Lightness index L, Perceptual chromaticity index For a and b, the surface of the support and the surface of the pressure-sensitive adhesive layer are measured. The measured values of the surface of the support are Lx, ax, bx, and the measured values of the surface of the pressure-sensitive adhesive layer are L, a, b. ΔE is calculated by Equation 1.
(Equation 1) ΔE = √ ((Lx−L) 2 + (ax−a) 2 + (bx−b) 2 )
(条件2)
JIS Z8722:2009「色の測定方法―反射及び透過物体色」で規定する測定方法に従い、JIS Z 8730:2009「色の表示方法―物体色の色差」で規定する明度指数L、知覚色度指数a及びbについて、前記支持体の表面、前記感圧接着層の表面及び前記非感圧接着層の表面のそれぞれを測定する。前記支持体の表面の測定値をLx,ax,bxとし、前記感圧接着層の表面の測定値をL1,a1,b1とし、前記非感圧接着層の表面の測定値をL2,a2,b2とし、ΔE1は数2によって算出し、ΔE2は数3によって算出する。
(数2)ΔE1=√((Lx−L1)2+(ax−a1)2+(bx−b1)2)
(数3)ΔE2=√((Lx−L2)2+(ax−a2)2+(bx−b2)2)
(Condition 2)
According to JIS Z8722: 2009 "Color measurement method-Reflection and transmission object color", according to the measurement method JIS Z 8730: 2009 "Color display method-Color difference of object color", Lightness index L, Perceptual chromaticity index For a and b, the surface of the support, the surface of the pressure-sensitive adhesive layer, and the surface of the non-pressure-sensitive adhesive layer are measured. The measured value of the surface of the support is Lx, ax, bx, the measured value of the surface of the pressure-sensitive adhesive layer is L1, a1, b1, and the measured value of the surface of the non-pressure-sensitive adhesive layer is L2, a2, b2, ΔE1 is calculated by Equation 2, and ΔE2 is calculated by Equation 3.
(Equation 2) ΔE1 = √ ((Lx−L1) 2 + (ax−a1) 2 + (bx−b1) 2 )
(Equation 3) ΔE2 = √ ((Lx−L2) 2 + (ax−a2) 2 + (bx−b2) 2 )
条件1で求めた明度指数L又は条件2で求めた明度指数L1が88未満の場合、親展情報・個人情報は主に黒のインクジェットインクやトナーで記録される為、視認性が劣る。従来の技術では、不透明度対策で黒色系に調色し白色度を規定しているが、実際に親展情報の視認性で問題となるのは条件1で求めた明度指数L又は条件2で求めた明度指数L1である。例えば、黄色味を強くした色調は白色度としては低いが、条件1で求めた明度指数L又は条件2で求めた明度指数L1の数字は高く、視認性は良好である。逆に黒色の調色は視認性が悪く、藍色系も濃度が濃くなると視認性が劣る。これは視認性とは親展情報が黒い文字であることから、圧着用紙の白色度よりも圧着用紙の色と黒い文字との色の色差による為である。実際に親展情報に使用される黒色文字の濃度にはバラツキはあるので、特に規定するものではないがJIS Z8722:2009に準ずる測定方法に従い、JIS Z 8730:2009で規定する該表面の明度指数L、知覚色度指数a及びbより算出される方法を用いて、色付き再剥離性圧着記録用紙の表面と親展情報記録部のΔEが60以上であれば視認性は良好である。また条件1で求めた明度指数L又は条件2で求めた明度指数L1が88未満の色付けをした場合、色ムラが発生し易い。視認性同様に黄色味を強くしても条件1で求めた明度指数L又は条件2で求めた明度指数L1の値は大きく低下しないことから色ムラは発生しないが、藍色系などは濃色にした場合、色ムラが目立ち易くなる。 When the lightness index L obtained in Condition 1 or the lightness index L1 obtained in Condition 2 is less than 88, confidential information / personal information is recorded mainly with black inkjet ink or toner, and thus visibility is poor. In the prior art, the whiteness is defined by adjusting the black color to prevent opacity, but the problem with the visibility of confidential information is actually obtained with the lightness index L obtained under Condition 1 or Condition 2. The lightness index L1. For example, the color tone with enhanced yellowness is low as whiteness, but the value of the lightness index L obtained in Condition 1 or the lightness index L1 obtained in Condition 2 is high, and the visibility is good. On the contrary, the black toning has poor visibility, and the indigo color also has poor visibility when the density is high. This is because visibility is due to the color difference between the color of the pressure-bonded paper and the color of the black text rather than the whiteness of the pressure-sensitive paper because the confidential information is black characters. Since the density of black characters actually used for confidential information varies, it is not particularly specified, but according to a measurement method according to JIS Z8722: 2009, the lightness index L of the surface specified by JIS Z 8730: 2009 is used. Using the method calculated from the perceptual chromaticity indexes a and b, the visibility is good if ΔE between the surface of the colored releasable pressure-sensitive recording sheet and the confidential information recording portion is 60 or more. In addition, when the lightness index L obtained in Condition 1 or the lightness index L1 obtained in Condition 2 is less than 88, color unevenness is likely to occur. Similar to visibility, even if the yellow color is strengthened, the value of the lightness index L obtained in Condition 1 or the value of Lightness Index L1 obtained in Condition 2 does not drop significantly, so color unevenness does not occur, but indigo colors are dark. In this case, color unevenness is easily noticeable.
本実施形態では、支持体の両面に感圧接着層を形成する場合、感圧接着層が、条件1で求めたΔEが2以上となるように色付けされてなる。好ましくはΔEを3〜50となるようにする。ΔEが2未満では、着色が薄く、意匠性に乏しいという問題がある。 In this embodiment, when forming a pressure sensitive adhesive layer on both surfaces of a support body, a pressure sensitive adhesive layer is colored so that (DELTA) E calculated | required on the conditions 1 may be 2 or more. Preferably, ΔE is set to 3-50. When ΔE is less than 2, there is a problem that coloring is thin and design is poor.
本実施形態では、支持体の片面に感圧接着層を形成し、反対面に非感圧接着層を形成する場合、感圧接着層及び非感圧接着層が、条件2で求めたΔE1及びΔE2がいずれも2以上となるように色付けされてなる。好ましくはΔE1を3〜50となるようにする。ΔE1及びΔE2が2未満では、着色が薄く、意匠性に乏しいという問題がある。 In the present embodiment, when a pressure-sensitive adhesive layer is formed on one side of the support and a non-pressure-sensitive adhesive layer is formed on the opposite side, the pressure-sensitive adhesive layer and the non-pressure-sensitive adhesive layer have ΔE1 obtained in Condition 2 and Each of them is colored so that ΔE2 is 2 or more. Preferably, ΔE1 is set to 3-50. When ΔE1 and ΔE2 are less than 2, there is a problem that coloring is thin and design is poor.
本実施形態では、色ムラの程度を判別する基準として、(条件3)において、表面と裏面のいずれもΔE3の10点中少なくとも9点が0.2以下を満たすことが好ましい。ΔE3の10点のうち、9点が0.2以下を満たすことが実用下限である。8点以下であると、色ムラを認識しやすくなる。
(条件3)
用紙の幅方向沿って、5mm毎に10点、JIS Z8722:2009「色の測定方法―反射及び透過物体色」で規定する測定方法に従い、JIS Z 8730:2009「色の表示方法―物体色の色差」で規定する明度指数L、知覚色度指数a及びbについて表面と裏面のいずれも測定する。各々10点の測定値をL,a,bとし、この10点の平均値をLx,ax,bxとする。各々10点の測定値について、数4に従い、各々10点のΔE3を算出する。
(数4)ΔE3=√((Lx−L)2+(ax−a)2+(bx−b)2)
In this embodiment, as a criterion for determining the degree of color unevenness, in (Condition 3), it is preferable that at least 9 points out of 10 points of ΔE3 satisfy 0.2 or less in both of the front surface and the back surface. It is a practical lower limit that 9 points out of 10 points of ΔE3 satisfy 0.2 or less. If it is 8 points or less, it becomes easy to recognize color unevenness.
(Condition 3)
10 points along the width direction of the paper, 10 points every 5 mm, according to JIS Z8722: 2009 "Color measurement method-Reflection and transmission object color", JIS Z 8730: 2009 "Color display method-Object color Both the front surface and the back surface are measured for the lightness index L and the perceptual chromaticity indices a and b defined by “color difference”. The measured values at 10 points are L, a, and b, respectively, and the average values at 10 points are Lx, ax, and bx. For each of 10 measured values, ΔE3 for 10 points is calculated according to Equation 4.
(Equation 4) ΔE3 = √ ((Lx−L) 2 + (ax−a) 2 + (bx−b) 2 )
感圧接着層形成用塗工液及び非感圧接着層形成用塗工液に配合する有彩色の着色顔料としては、例えば、フタロシアニン系顔料、アゾ系顔料などの有機顔料、酸化物系顔料、水酸化物系顔料などの無機顔料が挙げられる。 Examples of chromatic coloring pigments to be blended in the pressure-sensitive adhesive layer-forming coating solution and the non-pressure-sensitive adhesive layer-forming coating solution include organic pigments such as phthalocyanine pigments and azo pigments, oxide pigments, Examples thereof include inorganic pigments such as hydroxide pigments.
また本実施形態では、感圧接着層形成用塗工液に含有させる界面活性剤はノニオン性界面活性剤に限定される。界面活性剤は基材上に調色された感圧接着層形成用塗工液を色ムラ無く、均一に塗布するものであり、これを用いない場合、比較的淡い濃度であっても浸透ムラやハジキといった色ムラを生じ外観を損なう。またこれらの塗工液にはイオン性の強い資材を用いる場合が多いことからイオン性を持った界面活性剤を用いた場合は、有彩色の着色顔料が凝集し、これも色ムラの原因となる。ノニオン性界面活性剤の配合量としては特に限定されるものではないが、好ましくは感圧接着層形成用塗工液の塗布乾燥後の感圧接着層の状態で、0.1〜8質量%、更に好ましくは0.5〜5質量%である。 In the present embodiment, the surfactant contained in the pressure-sensitive adhesive layer forming coating solution is limited to the nonionic surfactant. A surfactant is a uniform coating of a pressure-sensitive adhesive layer-forming coating solution on a substrate without color unevenness. If this is not used, even if the concentration is relatively light, uneven penetration will occur. And color irregularities such as repellency and damage to the appearance. In addition, these coating liquids often use strong ionic materials, so when an ionic surfactant is used, chromatic color pigments aggregate, which may cause color unevenness. Become. The compounding amount of the nonionic surfactant is not particularly limited, but preferably 0.1 to 8% by mass in the state of the pressure-sensitive adhesive layer after application and drying of the coating liquid for forming the pressure-sensitive adhesive layer. More preferably, it is 0.5 to 5% by mass.
感圧接着層形成用塗工液は、充填剤と感圧接着剤を主体として構成されるが、用途、加工工程によって要求される品質を勘案して各種資材を選択できる。 The pressure-sensitive adhesive layer-forming coating solution is mainly composed of a filler and a pressure-sensitive adhesive, but various materials can be selected in consideration of the quality required by the application and processing steps.
無機充填剤としては、合成シリカ、酸化チタン、カオリン、クレー、炭酸カルシウム、タルク、プラスチックピグメント、硫酸バリウム、水酸化アルミニウムなどを適宜併用しても良い。また平均粒径が20μm程度、例えば12〜24μmの小麦澱粉との併用は、感圧接着層の表面に二つのピークの異なる凹凸状態を形成し、再剥離強度を向上させながら、耐ブロッキング性を付与させるので最も好ましいが、これ以外の平均粒径が20μm程度、例えば12〜24μmの澱粉、例えば馬鈴薯、タピオカ、コーンなどを原料とした物、又は、シリカ、カオリン、クレー、タルク、炭酸カルシウム、水酸化アルミニウム、酸化チタン、プラスチックピグメントなどを適宜併用することができる。 As the inorganic filler, synthetic silica, titanium oxide, kaolin, clay, calcium carbonate, talc, plastic pigment, barium sulfate, aluminum hydroxide and the like may be used in combination as appropriate. Moreover, combined use with wheat starch having an average particle size of about 20 μm, for example, 12 to 24 μm, forms an uneven state with two peaks on the surface of the pressure-sensitive adhesive layer, while improving the re-peeling strength, while providing blocking resistance. Most preferably, the other average particle size is about 20 μm, for example, 12-24 μm starch, such as potato, tapioca, corn, or the like, or silica, kaolin, clay, talc, calcium carbonate, Aluminum hydroxide, titanium oxide, plastic pigment and the like can be used in combination as appropriate.
感圧接着剤としては、変性天然ゴム、SBR、クロロプレンゴムなどの合成ゴム、低ガラス転位点を持つアクリル樹脂などを用いることができる。 As the pressure sensitive adhesive, synthetic natural rubber such as modified natural rubber, SBR, chloroprene rubber, acrylic resin having a low glass transition point, or the like can be used.
また感圧接着効果以外に、印刷強度(表面強度)を向上させる目的に於いて酸化澱粉、ポリビニルアルコール、カルボキシメチルセルローズ、ヒドロキシエチルセルローズ、大豆蛋白、合成蛋白、カゼインなど、並びに、酢酸ビニル系エマルジョン、メチルメタクリレート・ブタジェン系エマルジョン、スチレン・ブタジエン系エマルジョン、アクリル・ブタジエン系エマルジョンなども、本発明の品質を損なわない範囲で併用することが出来る。 In addition to the pressure-sensitive adhesive effect, oxidized starch, polyvinyl alcohol, carboxymethyl cellulose, hydroxyethyl cellulose, soy protein, synthetic protein, casein, etc., and vinyl acetate emulsions for the purpose of improving printing strength (surface strength) Further, methyl methacrylate / butadiene emulsion, styrene / butadiene emulsion, acrylic / butadiene emulsion and the like can be used in combination as long as the quality of the present invention is not impaired.
感圧接着層形成用塗工液には各種添加剤を含有しても良く、塗工時の作業向上の為、レベリング剤や消泡剤・抑泡剤、後加工性を向上させるためにワックス類や蛍光染料、導電性を付与させるため界面活性剤や無機塩類からなるいわゆる帯電防止剤などを含有させることができる。その他、必要に応じて分散剤、印刷適性向上剤、潤滑剤、撥水剤、浸透剤、増粘剤、老化防止剤、紫外線吸収剤、染料、染料定着剤、サイズ剤、紙力増強剤、保水剤、消臭剤、防腐剤、防黴剤などの添加剤なども、本発明の品質を損なわない範囲で併用することが出来る。 The pressure-sensitive adhesive layer-forming coating solution may contain various additives. For improving the work during coating, leveling agents, antifoaming agents, antifoaming agents, and waxes to improve post-processing properties. In order to impart conductivity, fluorescent dyes, and so-called antistatic agents composed of surfactants or inorganic salts can be included. In addition, dispersants, printability improvers, lubricants, water repellents, penetrants, thickeners, anti-aging agents, ultraviolet absorbers, dyes, dye fixing agents, sizing agents, paper strength enhancers, as necessary Additives such as water retention agents, deodorants, preservatives, and antifungal agents can be used in combination as long as the quality of the present invention is not impaired.
また非感圧接着層形成用塗工液に用いる資材としては感圧接着層形成用塗工液と同様の資材を用いることができ、加圧時に圧着しないように調整を行う。非感圧接着層形成用塗工液は充填剤と接着剤を主体としても良いし、色顔料と接着剤の色付けのためのクリア液としても良い。非感圧接着層形成用塗工液にもノニオン性界面活性剤を含有させる。非感圧接着層形成用塗工液に配合されるノニオン性界面活性剤の配合量としては、充填剤と接着剤を主体とする場合は好ましくは塗布乾燥後の非感圧接着層の状態で、0.1〜8質量%、より好ましくは0.5〜5質量%である。クリア液の場合は対液の配合比で好ましくは0.1〜8質量%、より好ましくは0.5〜5質量%である。 Moreover, as a material used for the non-pressure-sensitive adhesive layer forming coating solution, the same material as the pressure-sensitive adhesive layer forming coating solution can be used, and adjustment is performed so as not to be pressure-bonded during pressurization. The non-pressure-sensitive adhesive layer forming coating liquid may be mainly composed of a filler and an adhesive, or may be a clear liquid for coloring a color pigment and an adhesive. A nonionic surfactant is also contained in the non-pressure-sensitive adhesive layer forming coating solution. The amount of the nonionic surfactant to be blended in the non-pressure-sensitive adhesive layer forming coating solution is preferably in the state of the non-pressure-sensitive adhesive layer after coating and drying when the filler and the adhesive are mainly used. 0.1 to 8 mass%, more preferably 0.5 to 5 mass%. In the case of a clear liquid, the mixing ratio of the liquid is preferably 0.1 to 8% by mass, more preferably 0.5 to 5% by mass.
感圧接着層形成用塗工液及び非感圧接着層形成用塗工液の塗工は、エアーナイフコーター、ロールコーター、ブレードコーター、ロッドブレードコーター、バーコーター、ダイコーターなどの一般的なコーターによって塗工される。 The coating liquid for forming pressure-sensitive adhesive layer and the coating liquid for forming non-pressure-sensitive adhesive layer can be applied to common coaters such as air knife coater, roll coater, blade coater, rod blade coater, bar coater and die coater. Coated by.
支持体は、単層抄き、多層抄きのいずれでもよい。支持体の主要素であるパルプ繊維としては、例えば、広葉樹さらしクラフトパルプ(LBKP)、針葉樹さらしクラフトパルプ(NBKP)などの化学パルプ、グランドパルプ(GP)、加圧式砕木パルプ(PGW)、リファイナー砕木パルプ(RMP)、サーモメカニカルパルプ(TMP)、ケミサーモメカニカルパルプ(CTMP)、ケミメカニカルパルプ(CMP)、ケミグランドパルプ(CGP)などの機械パルプ、脱墨パルプなどの古紙パルプなどの各種木材パルプが挙げられる。その中で、特に、特にNBKP、LBKP及びその混合物を使用することが好ましい。さらしクラフトパルプ(BKP)を使用することで、原紙の物理的強度を確保することができる。紙の剛度とのバランスを考慮するとNBKPとLBKPの使用割合(質量比)が9:1〜1:9であるのが好ましい。より好ましくは、8:2〜2:8であり、特に好ましくは、6:4〜4:6である。また、多層抄きとする場合、中層で使用されるパルプには、木材パルプだけで構成されてもよいが、回収パルプ(損紙)を含んでもよい。 The support may be either single layer papermaking or multilayer papermaking. Examples of the pulp fiber that is the main element of the support include chemical pulp such as hardwood bleached kraft pulp (LBKP) and softwood bleached kraft pulp (NBKP), ground pulp (GP), pressurized ground pulp (PGW), refiner ground wood Pulp (RMP), thermomechanical pulp (TMP), chemithermomechanical pulp (CTMP), chemimechanical pulp (CMP), and other wood pulp such as waste paper pulp such as deinked pulp Is mentioned. Among them, it is particularly preferable to use NBKP, LBKP and a mixture thereof. By using exposed kraft pulp (BKP), the physical strength of the base paper can be ensured. In consideration of the balance with the stiffness of the paper, the use ratio (mass ratio) of NBKP and LBKP is preferably 9: 1 to 1: 9. More preferably, it is 8: 2 to 2: 8, and particularly preferably 6: 4 to 4: 6. In the case of multilayer papermaking, the pulp used in the middle layer may be composed only of wood pulp, but may also include recovered pulp (waste paper).
支持体は、必要に応じて従来公知の填料、バインダー、サイズ剤、定着剤、歩留まり向上剤、紙力増強剤などの各種添加剤を混合してもよい。支持体は、パルプ繊維と、前記添加剤とを混合し、一般公知の抄紙機、例えば、長網抄紙機、円網抄紙機、ツインワイヤー抄紙機、スーパーウルトラフォーマー抄紙機などを用いて抄造することができ、抄紙機にて紙匹を形成した後に、乾燥して得ることができる。なお、本実施形態では、原紙の抄造方法に限定されるものではない。 The support may be mixed with various additives such as conventionally known fillers, binders, sizing agents, fixing agents, yield improvers, and paper strength enhancers as necessary. The support is prepared by mixing pulp fibers and the above-mentioned additives, and using a generally known paper machine such as a long net paper machine, a circular net paper machine, a twin wire paper machine, or a super ultraformer paper machine. It can be obtained by drying after forming a web with a paper machine. In addition, in this embodiment, it is not limited to the papermaking method of a base paper.
本実施形態では、支持体は、着色顔料、着色染料などの着色剤を含まず、無着色であることが好ましく、例えば、JIS P 8148:2001「紙,板紙及びパルプ―ISO白色度(拡散青色光反射率)の測定方法」に準ずる白色度で78%以上が好ましい。色付きの支持体を何色も製造するよりも無着色の白い支持体に色付き塗量を塗布した方が、製造工程上、安価に多色の製品に対応できる。 In this embodiment, it is preferable that the support does not contain a colorant such as a color pigment and a color dye and is not colored. For example, JIS P 8148: 2001 “Paper, paperboard and pulp—ISO whiteness (diffuse blue) The whiteness according to “Measurement method of light reflectance” is preferably 78% or more. Rather than manufacturing colored substrates in many colors, applying a colored coating amount to an uncolored white substrate can cope with multicolor products at low cost in the manufacturing process.
本発明を次の実施例、比較例により説明するが、本発明はこれらの例に限定されるものではない。なお、実施例又は比較例において示す「部」及び「%」は、特に明記しない限り質量部及び質量%を示す。 The present invention will be described with reference to the following examples and comparative examples, but the present invention is not limited to these examples. Note that “parts” and “%” shown in Examples or Comparative Examples indicate parts by mass and mass% unless otherwise specified.
(実施例1)
<支持体の作製>
広葉樹さらしクラフトパルプL−BKPからなるパルプスラリー中の絶乾パルプ100%に対し、酸化チタン(A−110:堺化学社製)5%、カチオン化でん粉(ケート308:日本NSC社製)0.8%、中性ロジンサイズ剤(NT−85:荒川化学社製)0.4%、湿潤紙力増強剤0.3%(WS−4020:星光PMC社製)の配合で抄紙し、JIS P 8148:2001に準ずる白色度で82%、米坪110g/m2の原紙を抄造した。JIS Z 8730:2009で規定する該表面の明度指数L、知覚色度指数a及びbを求めたところ、Lx=93.8,ax=−0.2,bx=2.7であった。
Example 1
<Production of support>
5% titanium oxide (A-110: manufactured by Sakai Chemical Co., Ltd.), cationized starch (Kate 308: manufactured by NSC Japan) 0% to 100% absolute dry pulp in pulp slurry made of hardwood bleached kraft pulp L-BKP 8%, neutral rosin sizing agent (NT-85: Arakawa Chemical Co., Ltd.) 0.4%, wet paper strength enhancer 0.3% (WS-4020: Seiko PMC Co., Ltd.) A base paper having a whiteness according to 8148: 2001 of 82% and a weight of 110 g / m 2 was made. The lightness index L and the perceptual chromaticity indices a and b defined by JIS Z 8730: 2009 were found to be Lx = 93.8, ax = −0.2, and bx = 2.7.
<感圧接着層形成用塗工液の作製>
ファインシールX−60(トクヤマ社製合成非晶質シリカ) 100質量部
PVA−117(クラレ社製ポリビニルアルコール) 10質量部
エマルゲン709(花王社製ノニオン性界面活性剤) 11質量部
サイビノールX−103−204E(メタクリル酸メチルグラフト共重合天然ゴム) 100質量部
以上の配合にて17.5質量%濃度の塗料を作製し、着色顔料(大日精化社製TB110−YELLOW2G)を対液重量比で、この塗料100部に対して0.25部配合して感圧接着層形成用塗工液を得た。感圧接着層形成用塗工液を支持体の両面に乾燥重量で各7g/m2(ウェット塗布量40g/m2)塗布し、色付き再剥離性感圧接着記録用紙を得た。
<Preparation of pressure-sensitive adhesive layer forming coating solution>
Fine seal X-60 (synthetic amorphous silica manufactured by Tokuyama Corporation) 100 parts by mass PVA-117 (polyvinyl alcohol manufactured by Kuraray Co., Ltd.) 10 parts by mass Emulgen 709 (nonionic surfactant manufactured by Kao Corporation) 11 parts by mass Cybinol X-103 -204E (methyl methacrylate graft copolymer natural rubber) 100 parts by mass A paint having a concentration of 17.5% by mass was prepared with the above blending, and a color pigment (TB110-YELLOW2G manufactured by Dainichi Seika Co., Ltd.) was used in a weight ratio to the liquid. 0.25 part of this coating material was blended to obtain a coating solution for forming a pressure-sensitive adhesive layer. The pressure-sensitive adhesive layer-forming coating solution was applied on both sides of the support in a dry weight of 7 g / m 2 (wet coating amount 40 g / m 2 ), and a colored releasable pressure-sensitive adhesive recording paper was obtained.
(実施例2)
実施例1において着色顔料(大日精化社製TB110−YELLOW2G)を対液重量比で1.0質量部とした以外は実施例1と同様にして色付き再剥離性感圧接着記録用紙を得た。
(Example 2)
A colored releasable pressure-sensitive adhesive recording paper was obtained in the same manner as in Example 1 except that the color pigment (TB110-YELLOW2G manufactured by Dainichi Seika Co., Ltd.) was changed to 1.0 part by mass with respect to the liquid weight in Example 1.
(実施例3)
実施例1において着色顔料を大日精化社製TB520 Blue2Bとし、配合量を対液重量比で0.038質量部とした以外は実施例1と同様にして色付き再剥離性感圧接着記録用紙を得た。
(Example 3)
In Example 1, a colored releasable pressure-sensitive adhesive recording sheet is obtained in the same manner as in Example 1 except that the color pigment is TB520 Blue 2B manufactured by Dainichi Seika Co., Ltd. and the blending amount is 0.038 parts by mass with respect to the liquid. It was.
(実施例4)
実施例3においてTB520 Blue2Bの配合量を対液重量比で0.094質量部とした以外は実施例3と同様にして色付き再剥離性感圧接着記録用紙を得た。
Example 4
A colored releasable pressure-sensitive adhesive recording sheet was obtained in the same manner as in Example 3 except that the amount of TB520 Blue 2B in Example 3 was 0.094 parts by mass with respect to the liquid weight.
(実施例5)
実施例1において着色顔料を大日精化社製TB1100 RedFGNとし、配合量を対液重量比で0.02質量部とした以外は実施例1と同様にして色付き再剥離性感圧接着記録用紙を得た。
(Example 5)
A colored releasable pressure-sensitive adhesive recording sheet is obtained in the same manner as in Example 1 except that the color pigment is TB1100 RedFGN manufactured by Dainichi Seika Co., Ltd. and the blending amount is 0.02 parts by weight with respect to the liquid. It was.
(実施例6)
実施例5においてTB1100 RedFGNの配合量を対液重量比で0.08質量部とした以外は実施例5と同様にして色付き再剥離性感圧接着記録用紙を得た。
(Example 6)
A colored removable pressure-sensitive adhesive recording paper was obtained in the same manner as in Example 5 except that the amount of TB1100 RedFGN in Example 5 was 0.08 parts by mass with respect to the liquid.
(実施例7)
実施例1において着色顔料を大日精化社製TB520 Blue2BとTB110 Yellow2Gとし、配合量を対液重量比でそれぞれ0.025質量部、0.083質量部とした以外は実施例1と同様にして色付き再剥離性感圧接着記録用紙を得た。
(Example 7)
In Example 1, the coloring pigments were TB520 Blue2B and TB110 Yellow2G manufactured by Dainichi Seika Co., Ltd., and the blending amounts were 0.025 parts by mass and 0.083 parts by mass, respectively. A colored releasable pressure sensitive adhesive recording paper was obtained.
(実施例8)
実施例7においてTB520 Blue2BとTB110 Yellow2Gの配合量を対液重量比でそれぞれ0.08質量部、0.28質量部とした以外は実施例7と同様にして色付き再剥離性感圧接着記録用紙を得た。
(Example 8)
A colored releasable pressure-sensitive adhesive recording paper was prepared in the same manner as in Example 7 except that the mixing amounts of TB520 Blue2B and TB110 Yellow2G were 0.08 parts by mass and 0.28 parts by mass, respectively, in the liquid weight ratio. Obtained.
(実施例9)
実施例1においてエマルゲン709(花王社製ノニオン性界面活性剤)の配合量を1.5質量部とした以外は実施例1と同様にして色付き再剥離性感圧接着記録用紙を得た。
Example 9
A colored removable pressure-sensitive adhesive recording paper was obtained in the same manner as in Example 1 except that the blending amount of Emulgen 709 (non-ionic surfactant manufactured by Kao Corporation) in Example 1 was 1.5 parts by mass.
(実施例10)
<非感圧接着層形成用塗工液の作製>
ファインシールX−60(トクヤマ社製合成非晶質シリカ) 100質量部
PVA−117(クラレ社製ポリビニルアルコール) 20質量部
エマルゲン709(花王社製ノニオン性界面活性剤) 6質量部
AD−13−50(昭和高分子社製エチレン酢酸ビニル共重合樹脂) 20質量部
以上の配合にて17.5質量%濃度の塗料を作製し、着色顔料(大日精化社製TB110−YELLOW2G)を対液重量比で、この塗料100部に対して0.16質量部配合して非感圧接着層形成用塗工液を得た。非感圧接着層形成用塗工液を支持体の片面に乾燥重量で7g/m2塗布し、その反対面に実施例1で得られた感圧接着層形成用塗工液を乾燥重量で7g/m2塗布し、色付き再剥離性感圧接着記録用紙を得た。
(Example 10)
<Preparation of non-pressure-sensitive adhesive layer forming coating solution>
Fine seal X-60 (synthetic amorphous silica manufactured by Tokuyama Corporation) 100 parts by mass PVA-117 (polyvinyl alcohol manufactured by Kuraray Co., Ltd.) 20 parts by mass Emulgen 709 (non-ionic surfactant manufactured by Kao Corporation) 6 parts by mass AD-13 50 (ethylene vinyl acetate copolymer resin manufactured by Showa Polymer Co., Ltd.) 20 parts by mass A paint having a concentration of 17.5% by mass is prepared with the above composition, and a color pigment (TB110-YELLOW2G manufactured by Dainichi Seika Co., Ltd.) In comparison, 0.16 parts by mass with respect to 100 parts of the coating material was blended to obtain a non-pressure-sensitive adhesive layer forming coating solution. A non-pressure-sensitive adhesive layer-forming coating solution was applied to one side of the support by a dry weight of 7 g / m 2 , and the pressure-sensitive adhesive layer-forming coating solution obtained in Example 1 was applied to the opposite surface by a dry weight. 7 g / m 2 was applied to obtain a colored removable pressure-sensitive adhesive recording paper.
(比較例1)
実施例3において着色顔料、大日精化社製TB520 Blue2Bを対液重量比で0.20質量部とした以外は実施例3と同様にして色付き再剥離性感圧接着記録用紙を得た。
(Comparative Example 1)
A colored releasable pressure-sensitive adhesive recording paper was obtained in the same manner as in Example 3 except that the coloring pigment, TB520 Blue 2B manufactured by Dainichi Seika Co., Ltd. was changed to 0.20 parts by mass with respect to the liquid weight.
(比較例2)
実施例3において着色顔料、大日精化社製TB520 Blue2Bを対液重量比で0.30質量部とした以外は実施例3と同様にして色付き再剥離性感圧接着記録用紙を得た。
(Comparative Example 2)
A colored releasable pressure-sensitive adhesive recording paper was obtained in the same manner as in Example 3 except that the color pigment, TB520 Blue 2B manufactured by Dainichi Seika Co., Ltd. was used in an amount of 0.30 parts by weight.
(比較例3)
実施例5において着色顔料、大日精化社製TB1100 RedFGNを対液重量比で0.15質量部とした以外は実施例5と同様にして色付き再剥離性感圧接着記録用紙を得た。
(Comparative Example 3)
A colored releasable pressure-sensitive adhesive recording paper was obtained in the same manner as in Example 5 except that the coloring pigment, TB1100 Red FGN manufactured by Dainichi Seika Co., Ltd. was used in an amount of 0.15 parts by weight to the liquid.
(比較例4)
実施例5において着色顔料、大日精化社製TB1100 RedFGNを対液重量比で0.25質量部とした以外は実施例5と同様にして色付き再剥離性感圧接着記録用紙を得た。
(Comparative Example 4)
A colored releasable pressure-sensitive adhesive recording paper was obtained in the same manner as in Example 5 except that the color pigment, TB1100 RedFGN manufactured by Dainichi Seika Co., Ltd. was changed to 0.25 parts by weight with respect to the liquid.
(比較例5)
実施例7において着色顔料、大日精化社製TB520 Blue2Bを対液重量比で0.15質量部、TB110 Yellow2Gを0.33質量部とした以外は実施例7と同様にして色付き再剥離性感圧接着記録用紙を得た。
(Comparative Example 5)
Colored re-peelable pressure in the same manner as in Example 7, except that the color pigment, TB520 Blue2B manufactured by Dainichi Seika Co., Ltd. was 0.15 parts by mass and TB110 Yellow2G was 0.33 parts by mass in Example 7. An adhesive recording paper was obtained.
(比較例6)
実施例1において着色顔料を大日精化社製TB510 BlackTRに変更し、配合量を対液重量比で0.021質量部とした以外は実施例1と同様にして色付き再剥離性感圧接着記録用紙を得た。
(Comparative Example 6)
Colored releasable pressure-sensitive adhesive recording paper in the same manner as in Example 1 except that the color pigment in Example 1 was changed to TB510 BlackTR manufactured by Dainichi Seika Co., Ltd. and the blending amount was 0.021 parts by mass with respect to the liquid. Got.
(比較例7)
実施例1において着色顔料を大日精化社製TB510 BlackTRに変更し、配合量を対液重量比で0.03質量部とした以外は実施例1と同様にして色付き再剥離性感圧接着記録用紙を得た。
(Comparative Example 7)
Colored releasable pressure-sensitive adhesive recording paper in the same manner as in Example 1 except that the color pigment in Example 1 was changed to TB510 Black TR manufactured by Dainichi Seika Co., Ltd., and the blending amount was 0.03 parts by mass with respect to the liquid. Got.
(比較例8)
実施例4においてノニオン界面活性剤を配合しなかったこと以外は実施例4と同様にして色付き再剥離性感圧接着記録用紙を得た。
(Comparative Example 8)
A colored releasable pressure-sensitive adhesive recording paper was obtained in the same manner as in Example 4 except that the nonionic surfactant was not blended in Example 4.
(比較例9)
<オーバーコート液の作製>
PVA−117(クラレ社製ポリビニルアルコール)1質量%溶解液、100質量部に対液重量比でTB520Blue2Bを0.09質量部配合しオーバーコート液を得た。
<感圧接着層形成用塗工液の作製>
ファインシールX−60(トクヤマ社製合成非晶質シリカ) 100質量部
PVA−117(クラレ社製ポリビニルアルコール) 10質量部
エマルゲン709(花王社製ノニオン性界面活性剤) 8質量部
サイビノールX−103−204E(メタクリル酸メチルグラフト共重合天然ゴム) 100質量部
以上の配合にて17.5質量%濃度の感圧接着層形成用塗工液を得た。感圧接着層形成用塗工液を支持体の両面に乾燥重量で各7g/m2(ウェット塗布量40g/m2)塗布し、その後、オーバーコート液を乾燥重量で両面に各0.4g/m2(ウェット塗布量40g/m2)塗布し、色付けを行った。
(Comparative Example 9)
<Preparation of overcoat solution>
PVA-117 (polyvinyl alcohol manufactured by Kuraray Co., Ltd.) 1 mass% solution, 0.09 parts by mass of TB520Blue2B was added to 100 parts by mass with respect to the liquid to obtain an overcoat solution.
<Preparation of pressure-sensitive adhesive layer forming coating solution>
Fine seal X-60 (synthetic amorphous silica manufactured by Tokuyama Corporation) 100 parts by mass PVA-117 (polyvinyl alcohol manufactured by Kuraray Co., Ltd.) 10 parts by mass Emulgen 709 (non-ionic surfactant manufactured by Kao Corporation) 8 parts by mass Cybinol X-103 -204E (methyl methacrylate graft copolymer natural rubber) 100 parts by mass A pressure-sensitive adhesive layer-forming coating solution having a concentration of 17.5% by mass was obtained with the above formulation. The pressure-sensitive adhesive layer-forming coating solution was applied to both sides of the support in a dry weight of 7 g / m 2 (wet coating amount 40 g / m 2 ), and then the overcoat solution was applied in a dry weight of 0.4 g on both sides. / M 2 (wet coating amount 40 g / m 2 ) was applied and colored.
(比較例10)
比較例9で得られた感圧接着層形成用塗工液を支持体の両面に乾燥重量で各7g/m2(ウェット塗布量40g/m2)塗布し再剥離性感圧接着記録用紙を得た後、オフセット印刷を行って色付けを行った。
(Comparative Example 10)
The pressure-sensitive adhesive layer-forming coating solution obtained in Comparative Example 9 was applied to both sides of the support by a dry weight of 7 g / m 2 (wet coating amount 40 g / m 2 ) to obtain a releasable pressure-sensitive adhesive recording paper. After that, color was applied by offset printing.
以上の実施例及び比較例において得られた感圧接着記録用紙について、表1に評価結果を示す。 Table 1 shows the evaluation results of the pressure-sensitive adhesive recording sheets obtained in the above examples and comparative examples.
<評価方法>
得られた再剥離性圧着記録用紙は、23℃−50%R.H.の恒温恒湿室で24時間調湿後、同環境下でそれぞれ次の方法によって、評価を行った。
<Evaluation method>
The obtained releasable pressure-sensitive recording paper was 23 ° C.-50% R.D. H. After the humidity was controlled in a constant temperature and humidity chamber for 24 hours, the evaluation was performed in the same environment by the following methods.
(1)再剥離性圧着記録紙の色差及び
(2)支持体表面とのΔE
JIS Z 8722:2009で規定する測定方法に従い、JIS Z 8730:2009で規定する該表面の明度指数L、知覚色度指数a及びbより算出される方法を用いて、実施例及び比較例で得られた再剥離性圧着記録用紙と支持体の表面を測定した。
ΔE=√((Lx−L)2+(ax−a)2+(bx−b)2)
なお、支持体表面の測定値:Lx,ax,bx
実施例、比較例での再剥離性圧着記録用紙表面の測定値:L,a,b
なお、実施例10は、条件2に従う。
(1) Color difference of releasable pressure-bonded recording paper and (2) ΔE with support surface
According to the measurement method prescribed | regulated by JISZ8722: 2009, it obtained by an Example and a comparative example using the method calculated from the lightness index L of this surface prescribed | regulated by JISZ8730: 2009, and the perceptual color index a and b. The surface of the obtained releasable pressure-sensitive recording paper and the support was measured.
ΔE = √ ((Lx−L) 2 + (ax−a) 2 + (bx−b) 2 )
In addition, the measured value of the support surface: Lx, ax, bx
Measured values on the surface of the releasable pressure-sensitive recording paper in Examples and Comparative Examples: L, a, b
Note that Example 10 complies with Condition 2.
(3)色ムラ評価
JIS Z 8722:2009で規定する測定方法に従い、JIS Z 8730:2009で規定する該表面の明度指数L、知覚色度指数a及びbより算出される方法を用いて、再剥離性圧着記録用紙の幅方向に5mm毎に10点測定し、その平均値を基準とし各々10点のΔE3を表裏共に10点について評価した。前記条件3に相当する。
ΔE3=√((Lx−L)2+(ax−a)2+(bx−b)2)
尚、各測定点10点の平均値:Lx,ax,bx
各測定点での値:L,a,b
(3) Color unevenness evaluation According to the measurement method defined in JIS Z 8722: 2009, the method was calculated again using the method calculated from the lightness index L and the perceptual chromaticity index a and b of the surface defined in JIS Z 8730: 2009. Ten points were measured every 5 mm in the width direction of the peelable pressure-sensitive recording paper, and ΔE3 of 10 points was evaluated for 10 points on both the front and back, based on the average value. This corresponds to condition 3 above.
ΔE3 = √ ((Lx−L) 2 + (ax−a) 2 + (bx−b) 2 )
The average value of 10 measurement points: Lx, ax, bx
Values at each measurement point: L, a, b
前記色ムラ評価は、次に示す要領によって記述することにした。
○・・・ΔEが10測定点とも0.2以下(実用レベル)。
△・・・ΔEが1測定点で0.2超、残り9測定点が0.2以下(実用レベル下限)。
×・・・ΔEが2測定点以上で0.2超、残りの測定点が0.2以下(不適)。
The color unevenness evaluation is described in the following manner.
○ ΔE is 0.2 or less at 10 measurement points (practical level).
Δ ... ΔE is more than 0.2 at one measurement point, and the remaining 9 measurement points are 0.2 or less (practical level lower limit).
X: ΔE is 2 or more and more than 0.2, and the remaining measurement points are 0.2 or less (unsuitable).
(4)親展情報視認性
得られた再剥離性圧着記録用紙の表面に、インクジェットプリンター(ヒューレットパッカード社製 HP DeskJet560J)のインクカートリッジにラインプリンターインクジェットプリンター用のサイテックス1040黒インクを注入し、テスト印字パターン(バーコード、文字、ベタ)を印字し、インクジェット印字の視認性を評価した。ベタ印字部の明度指数L、知覚色度指数a及びbは32.5、1,2,5.0であった。
(4) Confidential Information Visibility Cytex 1040 black ink for line printer ink jet printers was injected into the ink cartridge of an ink jet printer (HP DeskJet 560J, manufactured by Hewlett Packard) on the surface of the obtained releasable pressure-sensitive recording paper, and tested. Printing patterns (barcode, characters, solid) were printed, and the visibility of inkjet printing was evaluated. The lightness index L and the perceptual chromaticity indices a and b of the solid print portion were 32.5, 1, 2, 5.0.
(4−1)視認性評価1
インクジェット印字で記録された文字を目視で確認し視認性を評価し、
◎:文字が鮮明に視認できる(実用レベル)。
○:文字が問題なく視認できる(実用レベル)。
△:文字が少し見づらい(不適)。
×:文字が見づらい(不適)。
とし、優、良、不可、劣の判断を行った。
(4−2)視認性評価2
ΔE=√((Lx−L)2+(ax−a)2+(bx−b)2)
なお、サイテックスインク1040ベタ印字部の測定値:Lx,ax,bx
実施例、比較例の再剥離性圧着記録用紙表面の測定値:L,a,b
○良:実施例、比較例で得られた再剥離性圧着記録用紙の明度指数Lが88以上、且つサイテックスインク印字部と再剥離性圧着記録用紙とのΔEが60以上の場合、色付きであっても視認性が良好と判断した。
×不可:実施例、比較例で得られた再剥離性圧着記録用紙の明度指数Lが88未満、且つサイテックスインク印字部と再剥離性圧着記録用紙とのΔEが60未満の場合、色付けしたことによって、親展情報が判別し難く、視認性不可と判断した。
(4-1) Visibility evaluation 1
Visually check the characters recorded by inkjet printing and evaluate the visibility,
A: Characters are clearly visible (practical level).
○: Characters can be visually recognized without problems (practical level).
Δ: Characters are a little difficult to see (unsuitable).
×: Characters are difficult to see (unsuitable).
And judged whether it was good, good, impossible or inferior.
(4-2) Visibility evaluation 2
ΔE = √ ((Lx−L) 2 + (ax−a) 2 + (bx−b) 2 )
Measured value of Cytex ink 1040 solid printing part: Lx, ax, bx
Measured values on the surface of the releasable pressure-sensitive recording paper of Examples and Comparative Examples: L, a, b
○ Good: When the lightness index L of the releasable pressure-sensitive recording paper obtained in Examples and Comparative Examples is 88 or more, and ΔE between the Cytex ink printing portion and the releasable pressure-sensitive recording paper is 60 or more, it is colored. Even if it was, it was judged that visibility was favorable.
× Impossible: Coloring was applied when the lightness index L of the releasable pressure-sensitive recording paper obtained in Examples and Comparative Examples was less than 88 and ΔE between the Cytex ink printed portion and the releasable pressure-sensitive recording paper was less than 60. Therefore, it was difficult to determine the confidential information, and it was determined that the visibility was not possible.
(5)経済性評価
塗工液の薬品費及び生産性から評価した。
塗工液の薬品費及び生産性評価は、次に示す要領によって記述することにした。
○:着色のための追加工程が必要なく、採算レベル(実用レベル)。
×:着色のための追加工程が必要で、採算取れず(不適)。
(5) Economic evaluation It evaluated from the chemical cost and productivity of the coating liquid.
The chemical cost and productivity evaluation of the coating solution were described in the following manner.
○: An additional process for coloring is not required, and profitability level (practical level).
X: An additional step for coloring is necessary, and it is not profitable (unsuitable).
(6)剥離強度試験
得られた再剥離性圧着記録用紙を幅100mm、長さ100mmに裁断し、塗工面同士を重ね合わせてドライシーラー(プレッスルエコノ:トッパン・フォームズ社製)を用いてギャップ0.20mmにて加圧接着した。次にこの試料の幅方向中央部を25mm幅に断裁して、23℃、50%R.H.環境下で、ストログラフM−1型(東洋精機製作所社製)で速度300mm/分、剥離角90°(T型剥離)で剥離してその抵抗値を平均化して剥離強度gf/25mmを求める。
○:100以上〜200gf未満/25mmは剥離強度が実用レベルである。
△:50以上〜100gf未満/25mmは剥離強度が弱く実用下限に届かず。
×:0以上〜50gf未満/25mmは剥離強度が弱く実用不適。
(6) Peel strength test The obtained releasable pressure-sensitive recording paper is cut into a width of 100 mm and a length of 100 mm, the coated surfaces are overlapped with each other, and a gap is formed using a dry sealer (Pressle Econo: manufactured by Toppan Foams). Pressure bonding was performed at 0.20 mm. Next, the width direction center part of this sample was cut | judged to 25 mm width, and 23 degreeC and 50% R. H. Peel strength gf / 25mm is obtained by peeling with a strograph M-1 type (manufactured by Toyo Seiki Seisakusho Co., Ltd.) at a speed of 300 mm / min and a peel angle of 90 ° (T-type peel) and averaging the resistance values. .
◯: The peel strength is at a practical level for 100 to 200 gf / 25 mm.
(Triangle | delta): 50 or more-less than 100gf / 25mm has a weak peeling strength, and does not reach a practical minimum.
X: 0 or more to less than 50 gf / 25 mm is unsuitable for practical use because of low peel strength.
(7)白色度
実施例、比較例で得られた再剥離性圧着記録用紙についてJIS P 8148:2001に準ずる方法で白色度の測定を行った。
(7) Whiteness The whiteness of the releasable pressure-sensitive recording paper obtained in the Examples and Comparative Examples was measured by a method according to JIS P 8148: 2001.
表1に示すように実施例1〜10の本発明の再剥離性圧着記録用紙は色付きであっても親展情報に視認性に優れ、また色ムラが無く、均一であることから、ダイレクトメールなどに適用すれば、従来には無かった社会のニーズに応えることができ、一般再剥離性圧着記録紙にはない商品価値を安価に創生することができる。 As shown in Table 1, the releasable pressure-sensitive recording sheets of Examples 1 to 10 of the present invention are excellent in visibility of confidential information even if they are colored, and are uniform and free of color unevenness, such as direct mail. If applied to the above, it is possible to meet the needs of society that have not existed before, and to create a commercial value that is not found in general releasable pressure-sensitive recording paper at a low cost.
これに対し比較例1〜10は色ムラや親展情報の視認性、生産コスト、圧着性能などに劣ることが判る。また表1から色付けを行う場合、白色度の低下は親展情報の視認性に影響を与えるものではなく、明度指数Lに大きく影響を受けるものであることが判る。 On the other hand, it can be seen that Comparative Examples 1 to 10 are inferior in color unevenness, visibility of confidential information, production cost, crimping performance, and the like. In addition, when coloring is performed from Table 1, it can be seen that the decrease in whiteness does not affect the visibility of confidential information, but is greatly influenced by the brightness index L.
Claims (6)
前記感圧接着層が、ノニオン性界面活性剤及び有彩色の着色顔料を含有し、かつ、条件1で求めたΔEが2以上となるように色付けされてなり、
前記感圧接着層の条件1で求めた明度指数Lが88以上であり、
(条件3)において、表面と裏面のいずれもΔE3の10点中少なくとも9点が0.2以下を満たすことを特徴とする有彩色の色付き再剥離性圧着記録用紙。
(条件1)
JIS Z8722:2009「色の測定方法―反射及び透過物体色」で規定する測定方法に従い、JIS Z 8730:2009「色の表示方法―物体色の色差」で規定する明度指数L、知覚色度指数a及びbについて、前記支持体の表面及び前記感圧接着層の表面のそれぞれを測定する。前記支持体の表面の測定値をLx,ax,bxとし、前記感圧接着層の表面の測定値をL,a,bとする。ΔEは数1によって算出する。
(数1)ΔE=√((Lx−L)2+(ax−a)2+(bx−b)2)
(条件3)
用紙の幅方向沿って、5mm毎に10点、JIS Z8722:2009「色の測定方法―反射及び透過物体色」で規定する測定方法に従い、JIS Z 8730:2009「色の表示方法―物体色の色差」で規定する明度指数L、知覚色度指数a及びbについて表面と裏面のいずれも測定する。各々10点の測定値をL,a,bとし、この10点の平均値をLx,ax,bxとする。各々10点の測定値について、数4に従い、各々10点のΔE3を算出する。
(数4)ΔE3=√((Lx−L) 2 +(ax−a) 2 +(bx−b) 2 ) Removable pressure-sensitive adhesive recording with a pressure-sensitive adhesive layer formed on both sides of the support that does not exhibit tackiness and adhesiveness under normal conditions of normal temperature and normal pressure, but exhibits adhesiveness when pressed and can be re-peeled after pressure bonding In paper
The pressure-sensitive adhesive layer contains a nonionic surfactant and a chromatic color pigment, and is colored so that ΔE obtained in condition 1 is 2 or more,
Ri der luminosity index L is 88 or more as determined by the condition 1 of the pressure-sensitive adhesive layer,
In (Condition 3), a chromatic colored releasable pressure-sensitive recording sheet characterized in that at least 9 points out of 10 points of ΔE3 satisfy 0.2 or less on both the front and back surfaces .
(Condition 1)
According to JIS Z8722: 2009 "Color measurement method-Reflection and transmission object color", according to the measurement method JIS Z 8730: 2009 "Color display method-Color difference of object color", Lightness index L, Perceptual chromaticity index For a and b, the surface of the support and the surface of the pressure-sensitive adhesive layer are measured. The measured values of the surface of the support are Lx, ax, bx, and the measured values of the surface of the pressure-sensitive adhesive layer are L, a, b. ΔE is calculated by Equation 1.
(Equation 1) ΔE = √ ((Lx−L) 2 + (ax−a) 2 + (bx−b) 2 )
(Condition 3)
10 points along the width direction of the paper, 10 points every 5 mm, according to JIS Z8722: 2009 "Color measurement method-Reflection and transmission object color", JIS Z 8730: 2009 "Color display method-Object color Both the front surface and the back surface are measured for the lightness index L and the perceptual chromaticity indices a and b defined by “color difference”. The measured values at 10 points are L, a, and b, respectively, and the average values at 10 points are Lx, ax, and bx. For each of 10 measured values, ΔE3 for 10 points is calculated according to Equation 4.
(Equation 4) ΔE3 = √ ((Lx−L) 2 + (ax−a) 2 + (bx−b) 2 )
前記感圧接着層及び前記非感圧接着層が、ノニオン性界面活性剤及び有彩色の着色顔料を含有し、かつ、条件2で求めたΔE1及びΔE2がいずれも2以上となるように色付けされてなり、
前記感圧接着層の条件2で求めた明度指数L1が88以上であることを特徴とする有彩色の色付き再剥離性圧着記録用紙。
(条件2)
JIS Z8722:2009「色の測定方法―反射及び透過物体色」で規定する測定方法に従い、JIS Z 8730:2009「色の表示方法―物体色の色差」で規定する明度指数L、知覚色度指数a及びbについて、前記支持体の表面、前記感圧接着層の表面及び前記非感圧接着層の表面のそれぞれを測定する。前記支持体の表面の測定値をLx,ax,bxとし、前記感圧接着層の表面の測定値をL1,a1,b1とし、前記非感圧接着層の表面の測定値をL2,a2,b2とし、ΔE1は数2によって算出し、ΔE2は数3によって算出する。
(数2)ΔE1=√((Lx−L1)2+(ax−a1)2+(bx−b1)2)
(数3)ΔE2=√((Lx−L2)2+(ax−a2)2+(bx−b2)2) A pressure-sensitive adhesive layer is formed on one side of the support that does not exhibit tackiness or adhesiveness under normal conditions of normal temperature and normal pressure, exhibits adhesiveness when pressed, and can be peeled again after pressure bonding. In the releasable pressure-sensitive adhesive recording paper formed by forming a non-pressure-sensitive adhesive layer on the surface,
The pressure-sensitive adhesive layer and the non-pressure-sensitive adhesive layer contain a nonionic surfactant and a chromatic color pigment, and are colored so that ΔE1 and ΔE2 obtained under condition 2 are both 2 or more. And
A chromatic colored releasable pressure-sensitive recording sheet, wherein the lightness index L1 obtained under Condition 2 of the pressure-sensitive adhesive layer is 88 or more.
(Condition 2)
According to JIS Z8722: 2009 "Color measurement method-Reflection and transmission object color", according to the measurement method JIS Z 8730: 2009 "Color display method-Color difference of object color", Lightness index L, Perceptual chromaticity index For a and b, the surface of the support, the surface of the pressure-sensitive adhesive layer, and the surface of the non-pressure-sensitive adhesive layer are measured. The measured value of the surface of the support is Lx, ax, bx, the measured value of the surface of the pressure-sensitive adhesive layer is L1, a1, b1, and the measured value of the surface of the non-pressure-sensitive adhesive layer is L2, a2, b2, ΔE1 is calculated by Equation 2, and ΔE2 is calculated by Equation 3.
(Equation 2) ΔE1 = √ ((Lx−L1) 2 + (ax−a1) 2 + (bx−b1) 2 )
(Equation 3) ΔE2 = √ ((Lx−L2) 2 + (ax−a2) 2 + (bx−b2) 2 )
(条件3)
用紙の幅方向沿って、5mm毎に10点、JIS Z8722:2009「色の測定方法―反射及び透過物体色」で規定する測定方法に従い、JIS Z 8730:2009「色の表示方法―物体色の色差」で規定する明度指数L、知覚色度指数a及びbについて表面と裏面のいずれも測定する。各々10点の測定値をL,a,bとし、この10点の平均値をLx,ax,bxとする。各々10点の測定値について、数4に従い、各々10点のΔE3を算出する。
(数4)ΔE3=√((Lx−L)2+(ax−a)2+(bx−b)2) 3. The chromatic colored releasable pressure-sensitive recording paper according to claim 2 , wherein at least 9 points out of 10 of ΔE3 satisfy 0.2 or less in both of the front and back surfaces in (Condition 3).
(Condition 3)
10 points along the width direction of the paper, 10 points every 5 mm, according to JIS Z8722: 2009 "Color measurement method-Reflection and transmission object color", JIS Z 8730: 2009 "Color display method-Object color Both the front surface and the back surface are measured for the lightness index L and the perceptual chromaticity indices a and b defined by “color difference”. The measured values at 10 points are L, a, and b, respectively, and the average values at 10 points are Lx, ax, and bx. For each of 10 measured values, ΔE3 for 10 points is calculated according to Equation 4.
(Equation 4) ΔE3 = √ ((Lx−L) 2 + (ax−a) 2 + (bx−b) 2 )
前記ノニオン性界面活性剤及び前記有彩色の着色顔料を含有する塗工液を調製する工程と、前記支持体の表面に前記塗工液を塗工して、前記感圧接着層又は前記非感圧接着層を形成することを特徴とする有彩色の色付き再剥離性圧着記録用紙の製造方法。 A method for producing a chromatic colored releasable pressure-sensitive recording paper according to any one of claims 1 to 5,
A step of preparing a coating liquid containing the nonionic surfactant and the chromatic coloring pigment; and coating the coating liquid on a surface of the support to form the pressure-sensitive adhesive layer or the non-sensitive layer. A method for producing a chromatic colored releasable pressure-sensitive recording sheet, comprising forming a pressure-bonding layer.
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