JP2006225803A - Repeelable compression-adhered recording paper - Google Patents
Repeelable compression-adhered recording paper Download PDFInfo
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Abstract
Description
本発明は、シーラー加工適性及びスムーズな剥離感を有する再剥離性圧着記録用紙の提供である。 The present invention provides a releasable pressure-sensitive recording paper having sealer processing suitability and smooth peeling feeling.
近年、銀行、クレジット会社、保険会社、官庁等から各個人宛に貯金、残金状況等個人情報を通知する手段として、再剥離性圧着記録用紙が親展葉書として普及している。これは基材に感圧接着剤を塗工した後、共通情報はオフセット印刷、グラビア印刷等で行い、個人情報はレーザービームプリント（ＬＢＰ）方式、インクジェット（ＩＪ）方式等で印刷した後、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、剥離することで情報を得ることができる。 In recent years, releasable pressure-sensitive recording sheets have become widespread as confidential postcards as means for notifying personal information such as savings and balances from banks, credit companies, insurance companies, government offices, and the like. After applying a pressure sensitive adhesive to the base material, common information is printed by offset printing, gravure printing, etc. Personal information is printed by laser beam printing (LBP) method, inkjet (IJ) method, etc. The surfaces can be bonded together by applying an appropriate pressure, mailed to each individual, and then peeled off to obtain information.
再剥離性圧着記録用紙を接着させる方法として、シーラーで圧着することが多く使用されている。これはシーラーのロール間の幅（シーラーギャップ）を調整することで、目的とする適度な剥離強度を得る。 As a method of adhering a releasable pressure-sensitive recording paper, it is often used to pressure-bond with a sealer. This adjusts the width | variety (sealer gap) between the rolls of a sealer, and obtains the target moderate peel strength.
また再剥離性圧着記録用紙は、郵送中に剥離してしまうことがない強度となるようになされる必要がある一方、名宛人が圧着部分を円滑に剥離することができる強度となるようになされる必要もあり、剥離強度の調整が重要な課題となる。 In addition, the releasable pressure-sensitive recording paper needs to be strong enough not to be peeled off during mailing, while the addressee is strong enough to smoothly peel the pressure-bonded part. Therefore, adjustment of peel strength is an important issue.
しかし従来の再剥離性圧着記録用紙は、シーラーギャップを変えた時の剥離強度の変化が大きいため、この調整が困難であった。例えば、シーラーギャップが適正幅よりも狭いときは剥離強度が著しく上昇し、剥離させるときに困難であるだけでなく、それが紙の表面強度を上回った場合には紙破れとなり、内容情報が読めなくなる恐れがある。逆にシーラーギャップが広いときは、適正な剥離強度が得られず郵送時に開封してしまう恐れがある。 However, conventional re-peelable pressure-sensitive recording paper has been difficult to adjust because of a large change in peel strength when the sealer gap is changed. For example, when the sealer gap is narrower than the appropriate width, the peel strength is remarkably increased and not only difficult when peeling, but if it exceeds the surface strength of the paper, the paper breaks and the content information can be read. There is a risk of disappearing. On the other hand, when the sealer gap is wide, an appropriate peel strength cannot be obtained, and there is a possibility of opening at the time of mailing.
さらに、剥離強度の強弱のムラ（ばらつき）が大きいものは、例え適正な剥離強度であっても、スムーズな剥離感が得られず好ましくない。また酷い場合には、ムラに起因した局所的な剥離強度の上昇が、紙破れの原因につながる恐れもある。 Further, a material having a large unevenness (variation) in peel strength is not preferable because even if the peel strength is appropriate, a smooth peel feeling cannot be obtained. In severe cases, a local increase in peel strength due to unevenness may lead to paper breakage.
従って、本発明の目的は、シーラーで圧着する際、剥離強度のシーラーギャップ依存性が少なく、即ち一定のシーラーギャップで一定の剥離強度を与えることができ、かつスムーズに剥離させることの可能な再剥離性圧着記録用紙を提供することにある。 Therefore, the object of the present invention is to reduce the dependence of the peel strength on the sealer gap when crimping with a sealer, that is, it is possible to give a constant peel strength with a constant sealer gap and to be able to peel smoothly. It is to provide a peelable pressure-sensitive recording sheet.
本発明者は、上記の課題を解決する為に鋭意研究を行った結果、常温、常圧では粘着性、接着性を示さず、加圧時に接着性を示し、圧着後に剥離可能である感圧接着剤層を少なくとも片面に有する再剥離性圧着記録用紙において、前記用紙の塗工前原紙の平均坪量をＸ、坪量の標準偏差をＹとしたときに、 As a result of earnest research to solve the above-mentioned problems, the present inventor does not exhibit tackiness and adhesiveness at normal temperature and normal pressure, exhibits adhesiveness when pressed, and can be peeled off after pressure bonding. In a releasable pressure-sensitive recording paper having an adhesive layer on at least one side, when the average basis weight of the base paper before coating of the paper is X and the standard deviation of the basis weight is Y,
を満足し、さらに感圧接着剤層が変性天然ゴムラテックス１００重量部に対し界面活性剤を３〜２０重量部配合してなることを特徴とする再剥離性圧着記録用紙によって解決されることを見出した。 And the pressure-sensitive adhesive layer is solved by a releasable pressure-sensitive recording sheet characterized by comprising 3 to 20 parts by weight of a surfactant per 100 parts by weight of a modified natural rubber latex. I found it.
このような構成をとることによって、シーラーで圧着する際に、一定のシーラーギャップで一定の剥離強度を与えることができ、かつスムーズに剥離させることの可能な再剥離性圧着記録用紙を提供することができる。 By adopting such a configuration, it is possible to provide a releasable pressure-sensitive recording paper that can give a certain peel strength with a certain sealer gap and can be peeled smoothly when crimping with a sealer. Can do.
以下、本発明について更に詳しく説明する。即ち本発明は、地合悪化による坪量の微小な凹凸同士が重なり合わさることにより剥離強度が部分的に著しく上昇することで紙破れの原因になることを見出した。さらにこの問題点を改善することにより、紙破れの生じにくい剥離感の得られた再剥離性圧着記録用紙を得ることが可能になった。 Hereinafter, the present invention will be described in more detail. That is, the present invention has found that the peeling strength is partially significantly increased due to the overlapping of the fine irregularities of the basis weight due to deterioration of the formation, thereby causing paper breakage. Furthermore, by resolving this problem, it has become possible to obtain a releasable pressure-sensitive recording paper having a feeling of peeling that is difficult to tear.
一般に、地合の劣る紙は坪量ムラが大きくなることが知られている。本発明では、坪量ムラについて１ｍｍ×１ｍｍの微小部分の坪量を４９００データ測定し、これらの値から算出した標準偏差を用いた。 In general, it is known that paper with poor formation has a large basis weight unevenness. In the present invention, 4900 data of the basis weight of a minute portion of 1 mm × 1 mm was measured for basis weight unevenness, and the standard deviation calculated from these values was used.
標準偏差は坪量が上がることで、その数値も大きくなる。そこで標準偏差を坪量の平方根で割った値が地合の尺度（「規定化された標準偏差」）として慣用に用いられており、平均坪量Ｘ、坪量の標準偏差Ｙとしたときの The standard deviation increases as the basis weight increases. Therefore, the value obtained by dividing the standard deviation by the square root of the basis weight is commonly used as a measure of formation (“standardized standard deviation”), and when the average basis weight X and the standard deviation Y of basis weight are used.
の式で示される。 It is shown by the formula of
重ねたシートを圧着するとき坪量の高い部分同士が重なり合わさると、剥離強度が他の部分と比較して著しく上昇し、逆に坪量の低い部分同士が重なり合わさると、剥離強度が他の部分と比較して著しく減少する傾向にある。坪量ムラの大きい紙では、この傾向が大きい。その結果、紙の剥離感が悪くなるだけでなく、ムラが酷い場合には剥離強度の高い部分を起点として紙破れが生じる恐れがある。実験の結果、１ｍｍ×１ｍｍの微小部分の坪量の「規定化された標準偏差」が０．６未満（好ましくは０．５５未満）で、剥離感に優れた、紙破れの生じにくいものが得られることを確認した。 When crimping the stacked sheets, if the parts with high basis weight overlap each other, the peel strength will rise significantly compared to other parts, and conversely if the parts with low basis weight overlap each other, the peel strength will be different It tends to decrease significantly compared to the portion. This tendency is large for paper with large basis weight unevenness. As a result, not only does the paper peel off worse, but if the unevenness is severe, there is a risk of paper tearing starting from a portion having a high peel strength. As a result of the experiment, the “standardized standard deviation” of the basis weight of a minute portion of 1 mm × 1 mm is less than 0.6 (preferably less than 0.55), and excellent in peeling feeling and less likely to tear. It was confirmed that it was obtained.
また本発明において、感圧接着組成物中に界面活性剤を添加することによって更にシーラーギャップ依存性を小さく出来ることを見出した。その機構については明らかではないが、界面活性剤の緩衝効果により、重ねたシートを圧着したときに生じる天然ゴム成分同士の接着作用（相互分散作用）を抑制する為、剥離強度のばらつきを抑制することができると考えられる。また界面活性剤の添加は、天然ゴム成分や微粒子、カチオン成分等の間で混和性を良化させることができる為、凝集等に起因する局所的な剥離強度の著しい上昇も抑制することが出来ると考えられる。 In the present invention, it was also found that the dependence on the sealer gap can be further reduced by adding a surfactant to the pressure-sensitive adhesive composition. The mechanism is not clear, but due to the buffering effect of the surfactant, the adhesive action (mutual dispersion action) between the natural rubber components that occurs when the stacked sheets are pressure-bonded is suppressed. It is considered possible. In addition, the addition of a surfactant can improve miscibility among natural rubber components, fine particles, cationic components, etc., and therefore can suppress a significant increase in local peel strength due to aggregation or the like. it is conceivable that.
本発明に用いられる界面活性剤はアニオン性界面活性剤、カチオン性界面活性剤、非イオン性界面活性剤、等の公知のものの中から適宜、１種あるいは複数を選択することができるが、親水性であることが好ましい。アニオン性界面活性剤としては脂肪酸系、スルホン酸系、リン酸系、コハク酸系、スルホコハク酸系、カルボン酸系、ポリカルボン酸系などがあり、カチオン性界面活性剤としては、アルキルアミン塩系、ベンジルアミン塩系、ポリアミンなどがある。 As the surfactant used in the present invention, one or more surfactants can be appropriately selected from known anionic surfactants, cationic surfactants, nonionic surfactants, and the like. Is preferable. Examples of anionic surfactants include fatty acids, sulfonic acids, phosphoric acids, succinic acids, sulfosuccinic acids, carboxylic acids, and polycarboxylic acids, and cationic surfactants include alkylamine salts. Benzylamine salt system, polyamine and the like.
また、非イオン性界面活性剤としてはエーテル系、アルキルフェノール系、エステル系、アルキロールアミド系、グリセリン系、グリセリンエステル系、ソルビタンエーテル系、ソルビタンエステル系、ソルビタンエステルエーテル系、エチレンオキサイド系、プロピレンオキサイド系などが挙げられ、特に、ＨＬＢ（親水性親油性バランス）の値が大きいものが好ましい。 Nonionic surfactants include ether, alkylphenol, ester, alkylolamide, glycerin, glycerin ester, sorbitan ether, sorbitan ester, sorbitan ester ether, ethylene oxide, propylene oxide. Examples thereof include those having a large HLB (hydrophilic / lipophilic balance) value.
界面活性剤の感圧接着剤組成物中における含有率が、変性天然ゴムラテックス１００重量部に対し３重量部未満であるとシーラーギャップ依存性の抑制に効果が小さい。逆に２０重量部を越えると、塗工液の発泡が著しいために塗工が困難になり、さらに剥離強度の低下や印字・印刷適性の悪化など加工適性においても好ましくない。従って、本発明においては、変性天然ゴムラテックス中の界面活性剤の含有量は３〜２０重量部であることが必要である。界面活性剤の含有量は好ましくは４〜１８重量部である。 When the content of the surfactant in the pressure-sensitive adhesive composition is less than 3 parts by weight relative to 100 parts by weight of the modified natural rubber latex, the effect of suppressing the sealer gap dependency is small. On the other hand, when the amount exceeds 20 parts by weight, the coating liquid is remarkably foamed, so that coating becomes difficult. Further, it is not preferable in terms of workability such as a decrease in peel strength and deterioration in printing / printing suitability. Therefore, in the present invention, the content of the surfactant in the modified natural rubber latex needs to be 3 to 20 parts by weight. The content of the surfactant is preferably 4 to 18 parts by weight.
本発明に使用する感圧接着剤組成物中の変性天然ゴムラテックスとしては、例えば、天然ゴムにメタクリル酸メチルをグラフト重合した物等が挙げられる。 Examples of the modified natural rubber latex in the pressure-sensitive adhesive composition used in the present invention include, for example, a product obtained by graft polymerization of methyl methacrylate on natural rubber.
これらの感圧接着剤組成物には、必要に応じて粘着付与剤（テルペンフェノール樹脂、ポリブテン樹脂、ロジンエステル樹脂、石油樹脂等公知のものの中から一種または二種以上を使用することができる。 In these pressure-sensitive adhesive compositions, one or more of known tackifiers (terpene phenol resin, polybutene resin, rosin ester resin, petroleum resin, etc.) can be used as necessary.
これらの感圧接着剤組成物には、シリカ、炭酸カルシウム、カオリン、水酸化アルミニウム、クレー、酸化マグネシウム、水酸化マグネシウム、タルク、酸化チタン、酸化亜鉛、硫酸カルシウム、硫酸バリウム、ポリエチレン、ポリプロピレン、ポリスチレン、尿素ホルマリン樹脂等公知の微粒子充填剤の中から必要に応じて、１種または２種以上を使用することができる。 These pressure sensitive adhesive compositions include silica, calcium carbonate, kaolin, aluminum hydroxide, clay, magnesium oxide, magnesium hydroxide, talc, titanium oxide, zinc oxide, calcium sulfate, barium sulfate, polyethylene, polypropylene, polystyrene. One or more kinds of known fine particle fillers such as urea formalin resin can be used as necessary.
また、感圧接着剤組成物中には、必要に応じて、分散剤、消泡剤、老化防止剤、酸化防止剤、紫外線吸収剤、防黴剤、消臭剤、耐水化剤、蛍光増白剤等の添加剤を添加することができる。 In addition, in the pressure-sensitive adhesive composition, a dispersant, an antifoaming agent, an anti-aging agent, an antioxidant, an ultraviolet absorber, an antifungal agent, a deodorant, a water-proofing agent, a fluorescent enhancement agent, if necessary. Additives such as whitening agents can be added.
上記感圧接着剤組成物は、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、ダイコーター等の一般的なコーターによって塗工されるが、塗工量は乾燥重量で３〜１５ｇ／m2 の範囲で調整されるのが望ましい。塗工量を上記範囲に限定した理由は、３ｇ／m2 未満では印字品位や印刷上がりなどの視感的な面で劣り、更に剥離強度が低下し、好ましくないためである。また、塗工量が１５ｇ／m2を越えると、印字品位や印刷上がりなどの視感的な見栄えは向上するが、経済的な面から実用性が劣り、筆記性が乏しく、紙粉が発生しやすく、好ましくない。 The pressure-sensitive adhesive composition is applied by a general coater such as an air knife coater, roll coater, blade coater, rod blade coater, bar coater, die coater, etc., but the coating amount is 3 to 3 by dry weight. It is desirable to adjust in the range of 15 g / m 2 . The reason why the coating amount is limited to the above range is that if it is less than 3 g / m 2, it is not preferable because it is inferior in terms of visual quality such as print quality and printing finish, and further the peel strength is lowered. On the other hand, when the coating amount exceeds 15 g / m 2 , the visual appearance such as the print quality and the print finish is improved, but the practicality is inferior from the economical viewpoint, the writing property is poor, and paper dust is generated. It is easy to do and is not preferable.
実施例：
本発明を以下の実施例、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、比較例の重量部数（部）は、全て固形分換算での数値で示すものとする。
Example:
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. In addition, all the weight parts (part) of an Example and a comparative example shall show with the numerical value in conversion of solid content.
紙の坪量ムラはAMBERTEC社のBETA FORMATION TESTER（β線地合計）にて、１ｍｍ×１ｍｍ単位の微小部分の坪量を測定（４９００データ）。平均坪量Ｘ、坪量の標準偏差Ｙとしたときの The basis weight unevenness of the paper was measured by the AMBERTEC BETA FORMATION TESTER (total of β-line) and the basis weight of a minute part of 1 mm × 1 mm unit (4900 data). Average basis weight X, standard deviation Y of basis weight
の式から、坪量ムラの「規定化された標準偏差」を算出した。 From the equation, the “standardized standard deviation” of the basis weight unevenness was calculated.
本発明に使用する感圧接着剤組成物として、非晶質シリカ１００部、メタクリル酸メチルグラフト天然ゴムラテックス１００部、バインダーとして変性ポリビニルアルコール２０部、カチオン性樹脂２０部、さらに界面活性剤としてアニオン性であるペレックスＮＢ−Ｌ（花王社製）５部配合したものを作成した。次にこの感圧接着剤組成物を、平均坪量Ｘ、坪量の標準偏差Ｙとしたときの The pressure-sensitive adhesive composition used in the present invention includes 100 parts of amorphous silica, 100 parts of methyl methacrylate-grafted natural rubber latex, 20 parts of modified polyvinyl alcohol as a binder, 20 parts of cationic resin, and an anion as a surfactant. A blend of 5 parts of Perex NB-L (manufactured by Kao Corporation) was made. Next, when this pressure-sensitive adhesive composition is defined as an average basis weight X and a standard deviation Y of basis weight,
の値が約０．５である上質紙１２７．９ｇ／m2に塗工量が７ｇ／m2（乾燥重量）になるように塗工して再剥離性圧着記録用紙を得た。これを実施例１とした。 Values to obtain a coating to removability crimping recording sheet as coating amount in fine paper 127.9 g / m 2 is about 0.5 is 7 g / m 2 (dry weight). This was designated Example 1.
得られた再剥離性圧着記録用紙について剥離強度試験、剥離強度ばらつき評価、印刷適性試験、ＩＪ適性試験、紙破れ試験で評価した。 The obtained releasable pressure-sensitive recording paper was evaluated by a peel strength test, peel strength variation evaluation, print suitability test, IJ suitability test, and paper breakage test.
実施例１の感圧接着剤組成物で、界面活性剤として非イオン性であるエマルゲン４２０（花王社製）に変更した以外は、実施例１と同様にして再剥離性圧着記録用紙を作成し、これを実施例２とした。 A releasable pressure-sensitive adhesive recording sheet was prepared in the same manner as in Example 1 except that the pressure-sensitive adhesive composition of Example 1 was changed to Emulgen 420 (manufactured by Kao Corporation) which is nonionic as the surfactant. This was taken as Example 2.
実施例１の感圧接着剤組成物で界面活性剤の配合部数を１５部に変更した以外は、実施例１と同様にして再剥離性圧着記録用紙を作成し、これを実施例３とした。 A releasable pressure-sensitive recording sheet was prepared in the same manner as in Example 1 except that the compounding part of the surfactant was changed to 15 parts in the pressure-sensitive adhesive composition of Example 1, and this was designated as Example 3. .
比較例１
塗工前原紙として、平均坪量Ｘ、坪量の標準偏差Ｙとしたときの
Comparative Example 1
As the base paper before coating, the average basis weight X and the standard deviation Y of basis weight
の値が約０．８である上質紙１２７．９ｇ／m2に変更した以外は、実施例１と同様にして再剥離性圧着記録用紙を作成し、これを比較例１とした。 A re-peelable pressure-sensitive recording sheet was prepared in the same manner as in Example 1 except that the quality was changed to 127.9 g / m 2 of high-quality paper having a value of about 0.8.
比較例２
実施例１の感圧接着剤組成物で界面活性剤の配合部数を１部に変更した以外は、実施例１と同様にして再剥離性圧着記録用紙を作成し、これを比較例２とした。
Comparative Example 2
A re-peelable pressure-sensitive recording sheet was prepared in the same manner as in Example 1 except that the compounding part of the surfactant was changed to 1 part in the pressure-sensitive adhesive composition of Example 1, and this was designated as Comparative Example 2. .
比較例３
実施例１の感圧接着剤組成物で界面活性剤の配合部数を３０部に変更した以外は、実施例１と同様にして再剥離性圧着記録用紙を作成し、これを比較例３とした。
Comparative Example 3
A re-peelable pressure-sensitive recording sheet was prepared in the same manner as in Example 1 except that the compounding part of the surfactant was changed to 30 parts in the pressure-sensitive adhesive composition of Example 1, and this was designated as Comparative Example 3. .
以上の実施例、比較例で得られた再剥離性圧着記録用紙を下記試験方法に従って諸特性の評価を行なった。 Various characteristics of the releasable pressure-sensitive recording paper obtained in the above Examples and Comparative Examples were evaluated according to the following test methods.
剥離試験（強度）：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・フォームズ株式会社製）を用いて加圧接着した。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．環境下においてストログラフＭ−１型（東洋精機製作所製）で速度３００ｍｍ／分、剥離（Ｔ型剥離）強度で剥離してその抵抗値を平均化して剥離強度ｇｆ／２５ｍｍを求めた。◎：１００〜１５０ｇｆ／２５ｍｍ、○：５０〜１００ｇｆ／２５ｍｍ未満、△：２０〜５０ ｇｆ／２５ｍｍ未満、×：０〜２０ ｇｆ／２５ｍｍ未満、◎と○は実用レベルの剥離強度を示し、△と×は実用に耐えないレベルを示す。以下いずれも、◎は優れた性能を、○は実用レベルの性能を、△は実用に耐えない性能レベルをそして×は不満足な性能レベルを示す。 Peel test (strength): Cut into a width of 100 mm and a length of 100 mm, and the coated surfaces were overlapped and pressure-bonded using a dry sealer (Pressle Econo: manufactured by Toppan Foams Co., Ltd.). Next, the width direction center part of this sample was cut | judged to 25 mm width, and 23 degreeC and 50% R. H. Peeling strength gf / 25mm was obtained by peeling with a strograph M-1 type (manufactured by Toyo Seiki Seisakusho) at a speed of 300 mm / min and peeling (T-type peeling) strength and averaging the resistance values. A: 100 to 150 gf / 25 mm, O: 50 to less than 100 gf / 25 mm, Δ: 20 to less than 50 gf / 25 mm, X: 0 to less than 20 gf / 25 mm, A and O indicate a practical level of peel strength, Δ And x indicate levels that cannot be practically used. In the following, ◎ indicates excellent performance, ○ indicates performance at practical level, Δ indicates performance level that cannot withstand practical use, and × indicates unsatisfactory performance level.
剥離試験（ばらつき）：前記剥離強度試験に準じて、剥離（Ｔ型剥離）強度が４０ｇｆ／２５ｍｍになるように圧着。ストログラフＭ−１型（東洋精機製作所製）で速度３００ｍｍ／分、剥離（Ｔ型剥離）強度で剥離してその抵抗値の平均値からのばらつきを比較した。◎：ばらつきが０〜５％未満、○：ばらつきが５〜１０％未満、△：ばらつきが１０〜１５％未満、×：ばらつきが１５％以上。 Peel test (variation): In accordance with the above-described peel strength test, crimping is performed so that the peel (T-type peel) strength is 40 gf / 25 mm. Peeling was performed with a strograph M-1 type (manufactured by Toyo Seiki Seisakusho Co., Ltd.) at a speed of 300 mm / min and peeling (T-type peeling) strength, and the variation from the average value of the resistance values was compared. A: Variation is less than 0-5%, O: Variation is less than 5-10%, Δ: Variation is less than 10-15%, X: Variation is 15% or more.
印刷適性試験：ＲＩ−３型印刷適性試験機（明製作所製）を使用してインキ濃度、耐刷力等を目視により観察し評価を行った。インキによる塗工層剥け、紙剥けなどが全くないものから◎、○、△、×とした。 Printing suitability test: An RI-3 type printing suitability tester (manufactured by Meisei Seisakusho) was used to visually observe and evaluate ink density, printing durability, and the like. The case where there was no peeling of the coating layer with ink or paper was marked as ◎, ○, Δ, ×.
インクジェット（ＩＪ）印字適性試験：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サイテックス１０４０黒インクを注入し、テスト印字パターン（文字、線、ベタ）を印字し、視感で評価した。鮮明な画像、印字が得られたものから◎、○、△、×とした。 Inkjet (IJ) printability test: Cytex 1040 black ink was injected into an ink cartridge of an inkjet printer (HP DeskJet 560J, manufactured by Hewlett Packard), and a test print pattern (characters, lines, solid) was printed and evaluated by visual feeling. . The clear images and prints obtained were marked with ◎, ○, Δ, and ×.
紙破れ適性試験：前記剥離強度試験に準じて、剥離（Ｔ型剥離）強度が１００ｇｆ／２５ｍｍになるように圧着。その後剥がしたものについて、紙破れの程度を視感で評価した。剥離に伴う塗工層剥け、紙破れなどが全くないものから◎、○、△、×とした。 Paper tearing suitability test: Crimped so that the peel (T-type peel) strength is 100 gf / 25 mm according to the peel strength test. Thereafter, the degree of paper breakage was evaluated by visual sensation. The coating layers were not peeled off due to peeling and the paper was not torn.
実施例１〜３及び比較例１〜３で作成した再剥離性圧着記録用紙の、各試験結果を下記表１に示す。 The test results of the releasable pressure-sensitive recording paper prepared in Examples 1 to 3 and Comparative Examples 1 to 3 are shown in Table 1 below.
表１からもわかる通り、実施例の本発明の再剥離性圧着記録用紙は、剥離試験（強度）、剥離試験（ばらつき）、印刷適性、ＩＪ印字適性、紙破れ適性など優れた効果を奏する。 As can be seen from Table 1, the releasable pressure-sensitive recording paper of the present invention of the Examples exhibits excellent effects such as peel test (strength), peel test (variation), printability, IJ printability, and paper breakability.
これに対して、「規定化された標準偏差」（平均坪量をＸ、坪量の標準偏差をＹとしたときの In contrast, “standardized standard deviation” (when the average basis weight is X and the standard deviation of basis weight is Y,
）が請求項１に規定する範囲（０．６未満）に逸脱した比較例１の場合には、紙破れが発生しやすく、実用に耐えない。 In the case of Comparative Example 1 deviating from the range defined in claim 1 (less than 0.6), paper breakage is likely to occur and it is not practical.
感圧接着剤組成物の界面活性剤が、変性天然ゴムラテックス１００部に対し、３〜２０部の範囲を逸脱して１部の比較例２の場合には、比較例１と同様に紙破れが発生しやすく、実用に耐えない。同様に逸脱して感圧接着剤組成物の界面活性剤が３０部である比較例３の場合には、剥離強度、印刷適性及びＩＪ適性が悪く、実用に耐えない。 When the surfactant of the pressure sensitive adhesive composition deviates from the range of 3 to 20 parts with respect to 100 parts of the modified natural rubber latex and is 1 part of Comparative Example 2, the paper breaks as in Comparative Example 1. Is likely to occur and is not practical. Similarly, in the case of Comparative Example 3 in which the surfactant of the pressure-sensitive adhesive composition is 30 parts, the peel strength, printability, and IJ suitability are poor and cannot be put into practical use.
Claims (2)
The releasable pressure-sensitive recording sheet according to claim 1, wherein the surfactant is nonionic.
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|---|---|---|---|---|
| JPS629354A (en) * | 1985-07-08 | 1987-01-17 | Katsumi Miyazaki | Production of recording paper |
| JPH0360478A (en) * | 1989-07-25 | 1991-03-15 | Oji Paper Co Ltd | Production of porous carbon sheet |
| JPH0934158A (en) * | 1995-05-15 | 1997-02-07 | Canon Inc | Color electrophotographic transfer paper |
| JPH11138989A (en) * | 1997-11-05 | 1999-05-25 | Oji Paper Co Ltd | Thermal recording medium for cut form |
| JP2004107837A (en) * | 2002-09-20 | 2004-04-08 | Daio Paper Corp | False contact-bonding paper |
| JP2004300245A (en) * | 2003-03-31 | 2004-10-28 | Nippon Paper Industries Co Ltd | Quasi-bondable recording paper |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS629354A (en) * | 1985-07-08 | 1987-01-17 | Katsumi Miyazaki | Production of recording paper |
| JPH0360478A (en) * | 1989-07-25 | 1991-03-15 | Oji Paper Co Ltd | Production of porous carbon sheet |
| JPH0934158A (en) * | 1995-05-15 | 1997-02-07 | Canon Inc | Color electrophotographic transfer paper |
| JPH11138989A (en) * | 1997-11-05 | 1999-05-25 | Oji Paper Co Ltd | Thermal recording medium for cut form |
| JP2004107837A (en) * | 2002-09-20 | 2004-04-08 | Daio Paper Corp | False contact-bonding paper |
| JP2004300245A (en) * | 2003-03-31 | 2004-10-28 | Nippon Paper Industries Co Ltd | Quasi-bondable recording paper |
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