JP3696868B2 - Pseudo adhesive paper - Google Patents
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Description
本発明は、一時的に接着するが、必要時に容易に剥離できる機能を有する擬似接着用紙およびその製造方法に関する。特に、基紙に擬似接着剤層を設けた後、当該擬似接着剤層に対して、文字・図形等を印刷・印字等して使用するいわゆる先糊方式の擬似接着用紙に関する。 The present invention is temporarily adhered to a pseudo-adhesive sheet and a manufacturing method thereof having a function that can be easily peeled off when necessary. In particular, after providing a pseudo adhesive layer on a paper, with respect to the pseudo-adhesive layer, to a pseudo-adhesive paper so Sakinori scheme using characters and graphics such as printing, printing or the like manner.
擬似接着用紙は、例えば、親展情報等の各種情報を印字・印刷した擬似接着剤層面を内面にして折り畳み、重ね合わせ面を擬似接着して情報を隠蔽して郵送し、受取人が擬似接着部分を剥離して隠蔽情報を読み取る葉書システム等に使用されている。このような用途では、親展情報が透けて第三者に読み取られないように高い隠蔽性が要求される。 Pseudo-adhesive paper is, for example, folded with the pseudo-adhesive layer surface on which various information such as confidential information is printed / printed as the inner surface, and the superimposed surface is pseudo-adhered to conceal the information and sent by mail. It is used in postcard systems that read concealment information. In such applications, high concealment is required so that confidential information cannot be seen through and read by a third party.
一方、近年、家庭用インクジェットプリンター、ＳＯＨＯ向けレーザープリンター、デジタル複写機等のような、枚葉の用紙を複数枚重ねてセットし一枚ずつ自動搬送して印字・印刷する構成の小型枚葉紙用記録装置が広く普及し、印刷業界のみならず個人、一般企業等においても高精細で高速に印字・印刷が行えるようになってきた。このため、個人、一般企業等において自己あるいは自社で小型のメールシーラー等により親展葉書加工等の擬似接着加工をしたいという要望が高まっている。
そこで、本発明者らが従来擬似接着用紙の小型枚葉紙用記録装置や小型メールシーラーへの適性を調査したところ、従来擬似接着用紙では、擬似接着剤層の静摩擦係数が高すぎて最上部の1枚を搬送するときに下層の用紙も搬送されるいわゆる重送トラブルや、用紙が適切に搬送されない不送りのトラブルが発生することが知見された。 Therefore, the present inventors have investigated the aptitude to the small sheet-fed paper for the recording device and small mail sealer of conventional pseudo-adhesive paper, in the conventional pseudo-adhesive paper, the static friction coefficient of the pseudo-adhesive layer is too high It has been found that when the uppermost sheet is transported, a so-called multi-feed trouble in which the lower sheet is also transported and a problem of non-feeding in which the sheet is not transported properly occur.
そこで、本発明の主たる課題は、擬似接着用紙としての基本性能を低下させることなく、枚葉紙用記録装置における搬送性を改善した擬似接着用紙を提供することにある。 Therefore, a main object of the present invention is to provide a pseudo without lowering the basic performance as the adhesive sheet, pseudo adhesive sheet with improved transportability of the sheet for the recording device.
上記課題を解決した本発明およびその作用効果は次記のとおりである。
＜請求項１記載の発明＞
基紙の両面に、通常の状態では接着せずに所定の条件が付与されると剥離可能に擬似接着する擬似接着剤層を有し、当該擬似接着剤層面に文字・図形を印字・印刷して使用するいわゆる先糊方式の擬似接着用紙であって、
ＪＩＳ Ｐ ８１４７に規定される水平法によって測定される静摩擦係数が０．６５以下であり、
前記擬似接着剤層中の有機合成系顔料の割合が２〜５０重量％であり、かつその有機合成系顔料の平均粒子径が擬似接着剤層の平均厚さの１／２倍以上２倍未満平均粒子径であり、
前記擬似接着剤層中の無機顔料の割合が５〜７０重量％であり、かつその無機顔料の平均粒子径が有機合成系顔料の平均粒子径の０．１倍〜０．９倍の平均粒子径であることを特徴とする擬似接着用紙。
The present invention that has solved the above-described problems and the effects thereof are as follows.
<Invention of Claim 1>
On both sides of the base paper, there is a pseudo-adhesive layer that can be pseudo-bonded in a peelable manner when given conditions are not adhered under normal conditions, and characters and figures are printed and printed on the surface of the pseudo-adhesive layer. A so-called pre-glue type pseudo-adhesive paper,
The coefficient of static friction measured by the horizontal method specified in JIS P 8147 is 0.65 or less,
The ratio of the organic synthetic pigment in the pseudo-adhesive layer is 2 to 50% by weight, and the average particle diameter of the organic synthetic pigment is ½ times or more and less than twice the average thickness of the pseudo-adhesive layer Average particle size,
The proportion of the inorganic pigment in the pseudo adhesive layer is 5 to 70% by weight, and the average particle size of the inorganic pigment is 0.1 to 0.9 times the average particle size of the organic synthetic pigment. A pseudo-adhesive paper characterized by a diameter.
＜請求項２記載の発明＞
基紙の片面に、通常の状態では接着せずに所定の条件が付与されると剥離可能に擬似接着する擬似接着剤層を有し、当該擬似接着剤層面または擬似接着剤層非形成面に文字・図形を印字・印刷して使用するいわゆる先糊方式の擬似接着用紙であって、
ＪＩＳ Ｐ ８１４７に規定される水平法に準じて測定される、擬似接着剤層形成面と擬似接着剤層非形成面との静摩擦係数が０．６５以下であり、
擬似接着剤層中に、擬似接着剤層の平均厚さの１／２倍以上２倍未満の平均粒子径の有機合成系顔料が２〜５０重量％含まれ、
擬似接着剤層中に、有機合成系顔料の平均粒子径の０.９倍〜０．１倍の平均粒子径の無機顔料が５〜７０重量％含まれていることを特徴とする擬似接着用紙。
<Invention of Claim 2>
On one side of the base paper, it has a pseudo-adhesive layer that is pseudo-bonded so that it can be peeled off when given conditions are not adhered under normal conditions. It is a so-called paste-type pseudo-adhesive paper that prints and prints characters and figures.
The coefficient of static friction between the pseudo-adhesive layer-forming surface and the pseudo-adhesive layer non-forming surface, measured according to the horizontal method defined in JIS P 8147, is 0.65 or less,
In the pseudo-adhesive layer, 2 to 50% by weight of an organic synthetic pigment having an average particle diameter of ½ times or more and less than 2 times the average thickness of the pseudo-adhesive layer is included,
Pseudo-adhesive paper characterized in that the pseudo-adhesive layer contains 5-70% by weight of an inorganic pigment having an average particle size of 0.9 to 0.1 times the average particle size of the organic synthetic pigment. .
本発明によれば、枚葉紙用記録装置における搬送性が改善される。特に、無機顔料を含有せしめた発明では、インクジェットプリンターによる記録性に優れ、しかも搬送性にも優れるようになる。 According to the present invention, the transportability in the sheet recording apparatus is improved. In particular, in the invention in which an inorganic pigment is contained, the recording performance by the ink jet printer is excellent and the transportability is also excellent.
なお、本発明にいう平均粒子径とは、マイクロトラック法により測定された値をいう。 In addition, the average particle diameter as used in the field of this invention means the value measured by the micro track method.
次いで、本発明の実施の形態を以下に詳述する。
本発明者らが各種インクジェットプリンター等で搬送性の改善効果を研究した結果、ＪＩＳ Ｐ ８１４７に規定される水平法によって測定される静摩擦係数が０．６５以下であるか、あるいは、ＪＩＳ Ｐ ８１４７に規定される水平法に準じて測定される擬似接着剤層形成面と擬似接着剤層非形成面との静摩擦係数が０．６５以下であると、枚葉紙用記録装置における搬送時の不送り、重送が格段に発生しにくくなることが知見された。本発明はこの知見に基づくものである。静摩擦係数の下限は、特に規定されず搬送性の点からは低いほうが望ましいが、プリンターに複数重ねてセットするさいの取り扱いなどを考慮すれば実用的には０．４程度である。また、擬似接着剤層形成面と擬似接着剤層非形成面との静摩擦係数の測定は、一枚を基台上に擬似接着剤層非形成面を上にしておき、それに擬似接着剤層面を対面させるようにしてもう一枚を重ね、その上に錘を載せて測定する。
Next, embodiments of the present invention will be described in detail below.
As a result of studying the effect of improving the transportability by various ink jet printers or the like by the present inventors, the static friction coefficient measured by the horizontal method specified in JIS P 8147 is 0.65 or less, or in JIS P 8147 When the static friction coefficient between the pseudo adhesive layer forming surface and a pseudo-adhesive layer surface without being measured according to the horizontal method specified is 0.65 or less, at the time of conveyance in the sheet recording device It has been found that non-feeding and double feeding are much less likely to occur. The present invention is based on this finding. The lower limit of the static friction coefficient is not particularly defined and is preferably low from the viewpoint of transportability, but is practically about 0.4 in consideration of handling when a plurality of sheets are stacked on the printer. The measurement of the static friction coefficient between the pseudo adhesive layer forming surface and a pseudo-adhesive layer non-forming surface, leave top pseudo adhesive layer surface without a single on the base, it pseudo as to face the adhesive layer surface overlaid another sheet, measured weight placed thereon.
さらに、擬似接着用紙において接着強度等を調整するために擬似接着剤層中に含有せしめている顔料が、枚葉用記録装置における搬送性に大きく影響するが、擬似接着剤層中の有機合成系顔料の割合が２〜５０重量％であり、しかもその有機合成系顔料の平均粒子径を擬似接着剤層の平均厚さの１／２以上２倍未満の平均粒子径である擬似接着用紙は、擬似接着剤層表面に露出する有機合成系顔料部分が適当で、静摩擦係数が０.６５以下であり、枚葉用記録装置における搬送性に優れる。 Furthermore, pigments in order to adjust the adhesive strength or the like in the pseudo-adhesive sheet is allowed to contain the pseudo adhesive layer is, although a great influence on the transport properties of the sheet for recording devices, pseudo organic adhesive layer synthetic ratio of the pigment is 2 to 50 wt%, yet its pseudo an average particle diameter of the organic synthetic pigments the average particle diameter of 1/2 or more and less than 2 times the average thickness of the pseudo-adhesive layer similar adhesive paper, synthetic organic pigments portion exposed to the pseudo adhesive layer surface is suitable, static friction coefficient is 0.65 or less, excellent transportability in sheet recording apparatus.
なお、擬似接着剤層中の有機合成系顔料の割合が２重量％未満、あるいは有機合成系顔料の平均粒子直径が擬似接着剤層厚の１／２倍未満であると、擬似接着剤層の接着力が強く剥離性が悪い。また、擬似接着剤層中の有機合成系顔料の割合が５０重量％を越える、あるいは有機合成系顔料の平均粒子径が擬似接着剤層厚の２倍以上であると、擬似接着剤層の接着力が低く擬似接着力が低く意図しない剥離が生じやすい。 Note that pseudo organic synthetic ratio of the pigment is less than 2 wt% in the adhesive layer, or the average particle diameter of the organic synthetic pigments is less than half the pseudo adhesive layer thickness, pseudo-adhesive The adhesive strength of the layer is strong and the peelability is poor. The ratio of organic synthesis pigments pseudo adhesive layer exceeds 50 wt%, or the average particle diameter of the organic synthetic pigments is at least twice the pseudo adhesive layer thickness, pseudo adhesive layer the adhesive force is low pseudo-adhesive force is not intended peeling low likely to occur.
前記有機合成系顔料としては、例えば、コート紙等に使用されるプラスチックピグメントや、尿素樹脂粒子、ポリスチレン樹脂粒子、スチレン・アクリル共重合体粒子、尿素ホルマリン樹脂粒子などが挙げられる。これらは単独であっても混合されていてもよい。特に、ポリエチレン樹脂からなるプラスチックピグメント、スチレン・アクリル共重合体粒子がよい。また、有機合成系顔料は微小中空粒子、多孔質粒子などの形態であってもよい。なお、本発明においては擬似接着剤層中に含まれる有機合成系顔料以外に有機天然系顔料が含まれていてもよい。有機天然顔料は、平均粒子径８〜２０μｍのものが好適である。また、その中でも特に、擬似接着剤層中に含まれる有機合成系顔料の平均粒子径よりも小さいものが好適である。かかる有機天然系顔料としては生澱粉等が挙げられる。 Examples of the organic synthetic pigment include plastic pigments used for coated paper, urea resin particles, polystyrene resin particles, styrene / acrylic copolymer particles, urea formalin resin particles, and the like. These may be used alone or in combination. Particularly preferred are plastic pigments made of polyethylene resin and styrene / acrylic copolymer particles. The organic synthetic pigment may be in the form of fine hollow particles, porous particles or the like. It may also contain organic natural pigments in addition to organic synthesis pigments contained in the adhesive layer in the pseudo in the present invention. The organic natural pigment preferably has an average particle diameter of 8 to 20 μm. Further, among them, it is preferable smaller than the average particle diameter of the organic synthetic pigments contained in the adhesive layer in pseudo. Such organic natural pigments include raw starch.
ここで、擬似接着剤層中の有機合成顔料の配合量、有機合成系顔料の平均粒子径の測定については、基紙から擬似接着剤層を剥離回収して、既知の定性および定量分析方法によって測定することができる。また、擬似接着用紙断面を画像解析して測定することもできる。 Here, the amount of organic synthesis pigments pseudo adhesive layer, for the measurement of the average particle diameter of the organic synthetic pigments, peeled recover pseudo-adhesive layer from the base paper, known qualitative and quantitative analysis It can be measured by the method. It is also possible to measure the pseudo adhesive sheet section by image analysis.
他方、擬似接着剤層中に、有機合成系顔料とともに無機顔料が含有されていると、特にインクジェットプリンターにおける印刷・印字性が良好である。擬似接着剤層中の無機顔料の割合が５〜７０重量％、好適には４０〜５０重量％であり、かつその無機顔料の平均粒子が前記有機合成系顔料の平均粒子径の０.１〜０.９倍の平均粒子径であると、無機顔料が擬似接着剤層表面に露出せず、無機顔料含有に起因する摩擦力増加が少なく搬送性も良好である。なお、無機顔料の割合が５重量％未満、あるいは無機顔料の平均粒子径が有機合成系顔料の平均粒子径の０.１倍未満であるとインクジェット記録性の向上がほとんどなく、無機顔料の割合が７０重量％以上、あるいは無機顔料の平均粒子径が有機合成系顔料の平均粒子径の０.９倍を越えるものは、無機顔料に起因する静摩擦係数の増加により搬送性に劣る。 On the other hand, the adhesive layer pseudo, when inorganic pigments with organic synthesis pigments are contained, in particular good printing and printing properties in the ink jet printer. Pseudo rate 5 to 70% by weight of inorganic pigment in the adhesive layer, preferably a 40 to 50 wt%, and the average particle of the inorganic pigment having an average particle diameter of the organic synthetic pigments 0.1 If it is the average particle diameter of 0.9 times, the inorganic pigment is not exposed to the pseudo-adhesive layer surface, the frictional force increases due to the inorganic pigment containing less transportability is also good. If the proportion of the inorganic pigment is less than 5% by weight, or the average particle size of the inorganic pigment is less than 0.1 times the average particle size of the organic synthetic pigment, there is almost no improvement in ink jet recording properties, and the proportion of the inorganic pigment In which the average particle diameter of the inorganic pigment exceeds 0.9 times the average particle diameter of the organic synthetic pigment is inferior in transportability due to an increase in the coefficient of static friction caused by the inorganic pigment.
前記無機顔料としては、一次または二次凝集体を形成しているカルサイト系沈降性炭酸カルシウム（白石工業株式会社製：ＰＣ、カルライトＫＴ）、二次凝集体を形成しているアラゴナイト系沈降性炭酸カルシウム（白石工業株式会社製：カルライトＳＡ）、重質炭酸カルシウム、カオリン、シリカ、合成微粒子シリカ、アミノ表面改質シリカ、ワックス表面処理シリカ、球状シリカ、通常のカルシウムや、亜鉛、マグネシウム、アルミニウムもしくはチタン等の金属の酸化物、水酸化物、炭酸塩、珪酸塩などが挙げられる。これらは単独であっても混合されていてもよい。 Examples of the inorganic pigment include calcite-based precipitated calcium carbonate (Shiraishi Kogyo Co., Ltd .: PC, Callite KT) that forms primary or secondary aggregates, and aragonite-based settleable that forms secondary aggregates. Calcium carbonate (Shiraishi Kogyo Co., Ltd .: Callite SA), heavy calcium carbonate, kaolin, silica, synthetic fine particle silica, amino surface modified silica, wax surface treated silica, spherical silica, normal calcium, zinc, magnesium, aluminum Alternatively, oxides of metal such as titanium, hydroxides, carbonates, silicates, and the like can be given. These may be used alone or in combination.
擬似接着剤層中の無機顔料の配合量、無機顔料の平均粒子径の測定は、上述の有機合成系顔料の測定と同様にして行なうことができる。 The amount of the inorganic pigment of pseudo adhesive layer, the measurement of the average particle diameter of the inorganic pigments can be carried out in the same manner as in the measurement of organic synthesis pigments described above.
なお、本発明においては、擬似接着剤中にはその他の助剤として、滑剤、印刷適性向上剤、酸化防止剤、紫外線吸収剤、導電剤、蛍光染料、着色染料、防腐剤、保湿剤、インクジェットインク用定着剤などが配合されていてもよい。 In the present invention, other auxiliaries in pseudo adhesives, lubricants, printability improving agents, antioxidants, ultraviolet absorbers, conductive agents, fluorescent dyes, coloring dyes, preservatives, humectants, An ink jet ink fixing agent or the like may be blended.
また、本発明においては基紙は、特に限定されない。例えばバージンパルプを主体とする上質紙や、ＰＧＷ、ＧＰ、ＴＭＰ等の各種機械パルプや新聞、チラシ、雑誌等の古紙パルプを配合した用紙等であればよい。 In the present invention, the base paper is not particularly limited. For example, high-quality paper mainly composed of virgin pulp, various mechanical pulps such as PGW, GP, and TMP, and paper blended with waste paper pulp such as newspapers, flyers, and magazines may be used.
次いで、上述の擬似接着用紙の製造についても説明する。
本発明の擬似接着用紙の製造は、基紙の両面または片面に、非剥離性接着剤（以下、接着基剤という）に、上述の有機合成系顔料、無機顔料を含有せしめた擬似接着剤を塗工機等により塗工して製造することができる。擬似接着剤中の有機合成系顔料の配合量を固形分比で２〜５０重量％とすれば、有機合成系顔料を２〜５０重量％含む擬似接着剤層とすることができる。
Then, also described the production of pseudo-adhesive sheet described above.
Production of pseudo adhesive sheet of the present invention, on both sides or one side of the base paper, non-peelable adhesive (hereinafter, referred to as adhesive base), a similar pseudo were allowed free organic synthesis pigments mentioned above, the inorganic pigments adhesive The agent can be produced by coating with a coating machine or the like. If the amount of the organic synthetic pigments in pseudo adhesive and 2 to 50 wt% in solid content ratio, it is possible to pseudo adhesive layer containing an organic synthetic pigments 2-50% by weight.
基紙については、過度に表面が粗いものである場合には静摩擦係数を低下させることが困難となるので、この点を考慮して選択する。一般的に印刷用途に用いられている上質紙等であれば問題ない。また、環境保護の観点からは、塩素を使用しないＴＣＦパルプやＥＣＦパルプを使用するのが好ましい。 The base paper is selected in consideration of this point because it is difficult to reduce the coefficient of static friction when the surface is excessively rough. There is no problem if it is a high-quality paper or the like generally used for printing. From the viewpoint of environmental protection, it is preferable to use TCF pulp or ECF pulp that does not use chlorine.
接着基剤としては、ラテックス、具体的には天然ゴム、合成ゴム等の従来通常の接着基剤に使用されているものの中から任意に選択して使用することができるが、特に天然ゴムを無硫黄加硫し、メタアクリル酸メチルと混合した天然ゴムラテックス、天然ゴムにメタアクリル酸メチルをグラフト共重合させて得られた天然ゴムラテックス、アクリル変性ゴムラテックス、ゴムラテックスと保護コロイド系アクリル共重合エマルジョンとの混合物が、耐ブロッキング性、耐経時劣化等の点で好適である。 As the adhesive base, it can be arbitrarily selected from those conventionally used for conventional adhesive bases such as latex, specifically natural rubber, synthetic rubber, etc. Sulfur vulcanized natural rubber latex mixed with methyl methacrylate, natural rubber latex obtained by graft copolymerization of methyl methacrylate with natural rubber, acrylic modified rubber latex, rubber latex and protective colloidal acrylic copolymer Mixtures with emulsions are preferred in terms of blocking resistance, aging resistance, and the like.
擬似接着剤の塗工は、従来既知の塗工機を用いた塗工方法により行うことができる。例えば、エアーナイフコーター、ブレードコーター、ロッドメタリングコーター、カーテンコーター、ロールコーターを用いて塗工することができる。 Coating the pseudo adhesive can be carried out by a coating method using a conventional known coating machine. For example, the coating can be performed using an air knife coater, a blade coater, a rod metering coater, a curtain coater, or a roll coater.
ここで、擬似接着剤層の塗工量と有機合成顔料の平均粒子径との関係を示すと、擬似接着剤の塗工量が３〜１５ｇ／ｍ2である場合には、有機合成系顔料の平均粒子径が３〜２０μｍ程度とするのが好適である。このようにすると、有機合成系顔料の平均粒子径が擬似接着剤層の平均厚さの０．５以上２倍未満の範囲となる。なお、塗工量が３ｇ／ｍ2未満であると、所望の接着力が得られず意図しない剥離が生じやすくなる。１５ｇ／ｍ2を超えると、接着力が強くなりすぎて再剥離しづらいものとなるとともに、塗工時に塗工ロールに糊粕が付着して操業上および品質上のトラブルを招きやすくなる。そして、かかる塗工量においては、有機合成系顔料の平均粒子直径が３μｍ以下では、有機合成系顔料が擬似接着剤層の中に埋没してしまい消耗の摩擦係数低減効果が望めず、２０μｍを超えると接着力の低下をきたし擬似接着性を低下させる。 Here, illustrating the relationship between the average particle diameter of the coating amount and organic synthesis pigments pseudo adhesive layer, when the coating amount of the pseudo-adhesive is 3 to 15 g / m 2, the organic synthesis The average particle diameter of the pigment is preferably about 3 to 20 μm. In this way, the average particle diameter of the organic synthetic pigments is 0.5 or more less than twice the range of the average thickness of the pseudo adhesive layer. If the coating amount is less than 3 g / m 2 , the desired adhesive strength cannot be obtained and unintended peeling tends to occur. If it exceeds 15 g / m 2 , the adhesive strength becomes too strong to make it difficult to peel again, and glue will adhere to the coating roll at the time of coating, leading to operational and quality problems. In such a coating amount, when the average particle diameter of the organic synthetic pigment is 3 μm or less, the organic synthetic pigment is buried in the pseudo adhesive layer, and the effect of reducing the friction coefficient of wear cannot be expected. than to lower the pseudo adhesion Kitaichi a decrease in adhesive force.
塗工後にはカレンダー処理を行なうことができる。かかるカレンダー処理装置としては、塗工機と一連をなすいわゆるオンマシンのカレンダー（オンマシンカレンダー）によって行なってもよいし、塗工機と一連ではなく完全に別体のオフマシンのカレンダー（オフマシンカレンダー）によって行ってもよい。カレンダーの種類は、特に限定されない。金属ロールと弾性ロールまたは金属ロール同士を組み合わせた従来既知のカレンダーが使用できる。 After coating, a calendar process can be performed. Such a calendar processing apparatus may be performed by a so-called on-machine calendar (on-machine calendar) that forms a series with the coating machine, or a completely separate off-machine calendar (off-machine) instead of a series of coating machines. (Calendar). The type of calendar is not particularly limited. A conventionally known calendar in which a metal roll and an elastic roll or metal rolls are combined can be used.
本発明にかかる擬似接着用紙の実施例と比較例とについて、物性値の測定、プリンター搬送性、擬似接着剤層の剥離性、トナー定着性等について試験し評価した。 For examples and comparative examples of pseudo adhesive sheet according to the present invention, the measurement of physical properties, printer transportability, peeling of the pseudo adhesive layer was evaluated and tested for toner fixing property and the like.
実施例および比較例は、基紙の表裏面にロッドコーターにて擬似接着剤を塗工して製造した。各実施例および各比較例の擬似接着剤層の厚さは表１に示すとおりである。なお、実施例１〜１２および比較例１〜１２については両面に擬似接着剤層を設け、実施例１３〜１８については片面のみに擬似接着剤層を設けた。 Examples and Comparative Examples were prepared by coating the pseudo adhesive at a rod coater on the front and back surfaces of the base paper. The thickness of the pseudo-adhesive layer of Examples and Comparative Examples are shown in Table 1. It should be noted that the Examples 1 to 12 and Comparative Examples 1 to 12 the pseudo-adhesive layer provided on both surfaces, for example 13 to 18 provided with the adhesive layer similar pseudo only on one side.
基紙は、実施例および比較例ともに、ＬＢＫＰとＮＢＫＰとを乾燥重量比９０：１０の割合で配合した原料パルプに、内添サイズ剤（ＡＫＤ）３ｋｇ／パルプトン、内添紙力増強剤としてポリアクリルアミド系水溶性樹脂２ｋｇ／パルプトン配合し、さらに乾燥後の割合が５重量％となるようタルクを配合した抄紙前原料を抄紙した原紙に、生澱粉を１０重量％含むサイズプレス液を表裏面に塗布して製造した。 In both the examples and comparative examples, the base paper was prepared by adding 3 kg / pulpton of an internal sizing agent (AKD) to a raw material pulp in which LBKP and NBKP were blended at a dry weight ratio of 90:10. A size press solution containing 10% by weight of raw starch is applied to the front and back sides of a base paper made from a pre-paper-making raw material containing 2 kg of acrylamide-based water-soluble resin / pulpton and further blended with talc so that the proportion after drying is 5% by weight. It was manufactured by coating.
擬似接着剤は、天然ゴムラテックス３５重量部に対して、合成ゴムラテックス・水溶性バインダーを１５重量部含有せしめた接着基剤に、生澱粉、有機合成系顔料、無機顔料料を配合して擬似接着剤とした。 Pseudo adhesive agent with respect to 35 parts by weight of natural rubber latex, synthetic rubber latex-soluble binder adhesive base agent was allowed containing 15 parts by weight, raw starch, blended synthetic organic pigments, inorganic pigments fee pseudo An adhesive was used.
有機合成系顔料は、実施例、比較例ともにポリエチレン樹脂からなるプラスチックピグメントを使用し、生澱粉は平均粒子径１４μｍのものを使用した。各実施例および各比較例についての、生澱粉の割合、有機合成系顔料（プラスチックピグメント）の平均粒子径、擬似接着剤中の有機合成系顔料（プラスチックピグメント）の割合（固形分重量比）、無機顔料の種類、擬似接着剤中の無機顔料の割合（固形分重量比）、有機合成系顔料の平均粒子径に対する無機顔料の平均粒子径の比は、表１に示すとおりである。 As organic synthetic pigments, plastic pigments made of polyethylene resin were used in both Examples and Comparative Examples, and raw starch having an average particle diameter of 14 μm was used. For each of Examples and Comparative Examples, the ratio of raw starch, synthetic organic pigments average particle diameter, ratio (solid content ratio by weight) of the pseudo-organic synthesis pigments in the adhesive (plastic pigment) of (plastic pigments) , the type of inorganic pigments, the proportion of inorganic pigment in the pseudo adhesive (solid weight ratio), the ratio of the average particle diameter of the inorganic pigment to the average particle diameter of the organic synthetic pigments are as shown in Table 1.
比較試験および、各実施例および各比較例の物性測定方法は、下記のとおりであり、結果、測定値は表１に示すとおりである。 The comparative test and the physical property measuring methods of each example and each comparative example are as follows, and the results and measured values are as shown in Table 1.
［擬似接着剤層厚］
各実施例および各比較例にかかる擬似接着用紙をミクロトーム（Ｌｅｉｃａ社製、ＲＭ２０３５）を用いて切断し、電子顕微鏡にて切断面を観察し、擬似接着剤層厚を測定した。
[Pseudo-adhesive layer thickness]
Each of the examples and the pseudo-adhesive sheet according to Comparative Example microtome (Leica Inc., RM2035) cleaved with, observing the cut surface with an electron microscope to measure the adhesive layer thickness pseudo.
［静摩擦係数］
ＪＩＳ Ｐ ８１４７に規定される水平法に基づいて測定した。
[ Static friction coefficient]
It was measured based on the horizontal method specified in JIS P 8147.
［搬送性］
試験は、枚葉型記録装置であるセイコーエプソン製インクジェットプリンターＰＭ９７０Ｃで各実施例および各比較例について１００枚ずつ搬送させ、重送、不送り等の搬送トラブルが発生するか否かを目視にて確認した。評価は、搬送トラブルがまったく発生しなかったものを良（○）、搬送トラブルが１回〜２回発生したものを可（△）、搬送トラブルが３回以上発生したものを不可（×）とした。
[Transportability]
In the test, 100 sheets of each example and each comparative example were conveyed by an ink-jet printer PM970C manufactured by Seiko Epson, which is a sheet-fed recording apparatus, and whether or not conveyance troubles such as double feeding and non-feeding occurred visually. confirmed. Evaluation is good (○) if no transportation trouble occurred, acceptable (△) if transportation trouble occurred once or twice, and (×) if transportation trouble occurred 3 times or more. did.
［剥離強度；剥離性および接着性］
二枚一組で一つの試料（幅５０ｍｍ×長さ１００ｍｍ）とし、その擬似接着剤層同士をメールシーラー（ＭＳ−９００：大日本印刷株式会社製）を用いてロールギャップ１４の設定で加圧して擬似接着し、５分間放置した後、Ｔ型剥離試験機を用いて、５００ｍｍ／分の条件で長さ方向の端から剥離して剥離強度を測定した。各実施例および各比較例それぞれについて試料１０組を用意し試験した。評価は、最適値である１５０ｇ／５ｃｍ〜２５０ｇ／５ｃｍを良（○）、適値である１００ｇ／５ｃｍ〜１４９ｇ／５ｃｍおよび２５１ｇ／５ｃｍ〜３００ｇ／５ｃｍを可（△）、前記以外を不可（×）とした。
[Peel strength; peelability and adhesion]
A set of two sheets is used as one sample (width 50 mm × length 100 mm), and the pseudo adhesive layers are pressurized with a mail gaper (MS-900: manufactured by Dai Nippon Printing Co., Ltd.) with the setting of the roll gap 14. After pseudo-adhering and allowing to stand for 5 minutes, the peel strength was measured by peeling from the end in the length direction at 500 mm / min using a T-type peel tester. Ten sets of samples were prepared and tested for each example and each comparative example. Evaluation is good (◯) for optimal values of 150 g / 5 cm to 250 g / 5 cm, acceptable values of 100 g / 5 cm to 149 g / 5 cm and 251 g / 5 cm to 300 g / 5 cm are acceptable (Δ), and other than the above (impossible) X).
[印刷性]
試験は、各実施例および各比較例をＡ４サイズに裁断し、枚葉型プリンター（ＩＰＳｉＯ ＮＸ６５０５：ＲＩＣＯＨ社製）に専用の黒色トナーをセットして、縦２ｍｍ×横２ｍｍの正方形の図形を縦３段、横３列、合計９個印刷した。各図形間は、縦横均等に１０ｍｍ間隔とした。印刷後、各図形を目視にて観察し、白く抜けた部位（一般的には白抜けといわれる）がないか確認した。評価は、９個の図形中に直径０．１ｍｍ以上の白抜けが確認されなかったものを良（○）、直径０．１ｍｍ以上の白抜けが認められる図形が、９個の図形中１個または２個であったものを可（△）、直径０．１ｍｍ以上の白抜けが認められる図形が、９個の図形中３個以上あったものを不可（×）とした。
[Printability]
In the test, each example and each comparative example were cut to A4 size, a special black toner was set in a sheet-fed printer (IPSiO NX6505: manufactured by RICOH), and a square figure of 2 mm in length and 2 mm in width was A total of 9 pieces were printed in 3 rows and 3 rows. The intervals between the figures were 10 mm apart vertically and horizontally. After printing, each figure was visually observed to confirm that there were no white spots (generally referred to as white spots). The evaluation was good (◯) when no white spot with a diameter of 0.1 mm or more was confirmed in nine figures, and one figure out of nine figures with a white spot with a diameter of 0.1 mm or more. Alternatively, two were acceptable (Δ), and three or more of nine figures having a diameter of 0.1 mm or more were recognized as unacceptable (x).
表１からみてとれるように、本発明の各実施例は、良（○）あるいは可（△）の評価しかないのに対して、比較例は何れかの試験において不可（×）の評価がある。以上より、本発明の擬似接着用紙が、枚葉型記録装置における搬送性、電子写真方式の記録装置における記録性、擬似接着性、および再剥離性が良好であることが示された。 As can be seen from Table 1, each example of the present invention has only a good (◯) or acceptable (Δ) evaluation, while the comparative example has an unsatisfactory (×) evaluation in any of the tests. Thus, pseudo-adhesion sheet of the present invention, the transport property in the sheet type recording apparatus, the recording of the recording apparatus of an electrophotographic type, pseudo adhesion and removability has been shown to be good.
本発明は、親展性を有するラベル、情報隠蔽紙、親展性葉書、親展性封筒等に使用可能である。 The present invention can be used for a label having confidentiality, an information hiding paper, a confidential postcard, a confidential envelope, and the like.
Claims (2)
ＪＩＳ Ｐ ８１４７に規定される水平法によって測定される静摩擦係数が０．６５以下であり、
前記擬似接着剤層中の有機合成系顔料の割合が２〜５０重量％であり、かつその有機合成系顔料の平均粒子径が擬似接着剤層の平均厚さの１／２倍以上２倍未満平均粒子径であり、
前記擬似接着剤層中の無機顔料の割合が５〜７０重量％であり、かつその無機顔料の平均粒子径が有機合成系顔料の平均粒子径の０．１倍〜０．９倍の平均粒子径であることを特徴とする擬似接着用紙。 On both sides of the base paper, there is a pseudo-adhesive layer that can be pseudo-bonded in a peelable manner when given conditions are not adhered under normal conditions, and characters and figures are printed and printed on the surface of the pseudo-adhesive layer. A so-called pre-glue type pseudo-adhesive paper,
The coefficient of static friction measured by the horizontal method specified in JIS P 8147 is 0.65 or less,
The ratio of the organic synthetic pigment in the pseudo-adhesive layer is 2 to 50% by weight, and the average particle diameter of the organic synthetic pigment is ½ times or more and less than twice the average thickness of the pseudo-adhesive layer Average particle size,
The proportion of the inorganic pigment in the pseudo adhesive layer is 5 to 70% by weight, and the average particle size of the inorganic pigment is 0.1 to 0.9 times the average particle size of the organic synthetic pigment. A pseudo-adhesive paper characterized by a diameter.
ＪＩＳ Ｐ ８１４７に規定される水平法に準じて測定される、擬似接着剤層形成面と擬似接着剤層非形成面との静摩擦係数が０．６５以下であり、
擬似接着剤層中に、擬似接着剤層の平均厚さの１／２倍以上２倍未満の平均粒子径の有機合成系顔料が２〜５０重量％含まれ、
擬似接着剤層中に、有機合成系顔料の平均粒子径の０.９倍〜０．１倍の平均粒子径の無機顔料が５〜７０重量％含まれていることを特徴とする擬似接着用紙。 On one side of the base paper, it has a pseudo-adhesive layer that is pseudo-bonded so that it can be peeled off when given conditions are not adhered under normal conditions. It is a so-called paste-type pseudo-adhesive paper that prints and prints characters and figures.
The coefficient of static friction between the pseudo-adhesive layer-forming surface and the pseudo-adhesive layer non-forming surface, measured according to the horizontal method defined in JIS P 8147, is 0.65 or less,
In the pseudo-adhesive layer, 2 to 50% by weight of an organic synthetic pigment having an average particle diameter of ½ times or more and less than 2 times the average thickness of the pseudo-adhesive layer is included,
Pseudo-adhesive paper characterized in that the pseudo-adhesive layer contains 5-70% by weight of an inorganic pigment having an average particle size of 0.9 to 0.1 times the average particle size of the organic synthetic pigment. .
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