JPH05186997A - Coated paper for making bag to be coated with ultraviolet-curing varnish - Google Patents
Coated paper for making bag to be coated with ultraviolet-curing varnishInfo
- Publication number
- JPH05186997A JPH05186997A JP282892A JP282892A JPH05186997A JP H05186997 A JPH05186997 A JP H05186997A JP 282892 A JP282892 A JP 282892A JP 282892 A JP282892 A JP 282892A JP H05186997 A JPH05186997 A JP H05186997A
- Authority
- JP
- Japan
- Prior art keywords
- coated
- paper
- ultraviolet
- base paper
- varnish
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Paper (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、原紙に印刷を行った
後、その表面に紫外線硬化型ニスを塗布して紫外線照射
を行う製袋用コート紙に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag-making coated paper in which, after printing on a base paper, an ultraviolet-curable varnish is applied to the surface of the base paper and irradiated with ultraviolet rays.
【０００２】[0002]
【従来の技術】手提げ袋としては、プラスチック袋のほ
か、紙製のものがある。紙製手提げ袋は、通常は、原紙
にラミネート加工し、美粧化（光沢を出す）するととも
に、強度、特に降雨時の濡れに対する強度低下を抑制し
ている。2. Description of the Related Art Handbags include plastic bags and paper bags. The paper carrying bag is usually laminated on the base paper to make it cosmetically (give a gloss) and at the same time suppress the strength, in particular, the decrease in strength due to wetting during rainfall.
【０００３】しかし、この種のラミネート品は故紙とし
て回収ができず、環境保護の観点から好ましくない。However, this type of laminated product cannot be recovered as waste paper, which is not preferable from the viewpoint of environmental protection.
【０００４】そこで、本出願人は、紫外線硬化型ニスを
塗布した、油性インキを使用するグラビア印刷に供する
ものを開発した。この場合の製袋用コート紙の透気度は
30,000秒程度である。Therefore, the applicant of the present invention has developed a varnish which is coated with an ultraviolet curable varnish and which is used for gravure printing using an oil-based ink. The air permeability of the bag-making coated paper in this case is
It is about 30,000 seconds.
【０００５】[0005]
【発明が解決しようとする課題】しかし、前記の油性イ
ンキ型のものは、透気度が高いので、水性インキを用い
たフレキソ印刷を行うことができない。However, since the above-mentioned oil-based ink type has high air permeability, flexographic printing using a water-based ink cannot be performed.
【０００６】したがって、本発明の主たる課題は、水性
インキを使用した印刷を可能とすることにある。Therefore, a main object of the present invention is to enable printing using a water-based ink.
【０００７】[0007]
【課題を解決するための手段】上記課題は、原紙に印刷
を行った後、その表面に紫外線硬化型ニスを塗布して紫
外線照射を行う製袋用コート紙において、前記原紙の透
気度が8,000 〜18,000秒であることで解決できる。[Means for Solving the Problems] The above problem is that in a bag-making coated paper in which a base paper is printed, and then an ultraviolet curable varnish is applied to the surface of the base paper for ultraviolet irradiation, the air permeability of the base paper is It can be solved by using 8,000 to 18,000 seconds.
【０００８】[0008]
【実施例】以下本発明を実施例を示してさらに詳説す
る。一般の製袋用コート紙は、バインダーとして、ＳＢ
Ｒラテックス（以下Ｌとして代表する）が13〜15部（重
量部）、スターチ（以下Ｓとして代表する）が１〜３部
を含有する。しかし、印刷後紫外線硬化型ニスをオーバ
ーコートすると、そのニスが紙層に浸透するので、光沢
がでない。そこで、バインダーを増量して、Ｌ＝19〜22
部、Ｓ＝５〜８部として吸油度を上げ、ニスの浸透を防
止することができる。EXAMPLES The present invention will be described in more detail below with reference to examples. Ordinary bag-making coated paper uses SB as a binder.
R latex (hereinafter represented as L) contains 13 to 15 parts (parts by weight), and starch (hereinafter represented as S) contains 1 to 3 parts. However, when the UV-curable varnish is overcoated after printing, the varnish penetrates into the paper layer, resulting in no gloss. Therefore, increase the amount of binder, L = 19-22
Part, S = 5 to 8 parts to increase oil absorption and prevent penetration of varnish.
【０００９】しかし、油性インキを使用するグラビア印
刷では、ドライヤーを通すので、問題がないが、枚葉オ
フセット印刷では、酸化重合タイプのインキを使用する
ので、インキの浸透性および乾燥性が悪化し、裏移りを
生じることがある。However, in gravure printing using oil-based ink, there is no problem because it is passed through a drier, but in sheet-fed offset printing, an ink of an oxidative polymerization type is used, so the penetrability and drying properties of the ink deteriorate. , Set-off may occur.
【００１０】ニスの浸透性は、透気度と関係があり、た
とえば表１に示す通りであり、バインダーの量を増量す
ることが重要であることが判る。The permeability of the varnish is related to the air permeability, for example, as shown in Table 1, and it can be seen that it is important to increase the amount of the binder.
【００１１】[0011]
【表１】 [Table 1]
【００１２】しかしながら、バインダー量を増量して、
紙層を緻密にすることにより、ニスの浸透を抑制できる
ものの、水性インキの吸水性が悪くなる。透気度が18,0
00秒、特に20,000秒を超えるとその傾向が顕著となる。
また、透気度が8,000 秒未満では、ニスの浸透性が過度
になる。したがって、本発明では、透気度を8,000 〜1
8,000秒とした。より好ましくは10,000〜16,000秒であ
る。However, by increasing the amount of binder,
By making the paper layer dense, the penetration of the varnish can be suppressed, but the water absorption of the water-based ink deteriorates. Air permeability is 18,0
The tendency becomes remarkable when the time exceeds 00 seconds, particularly 20,000 seconds.
Further, if the air permeability is less than 8,000 seconds, the permeability of the varnish becomes excessive. Therefore, in the present invention, the air permeability is 8,000 to 1
8,000 seconds. More preferably, it is 10,000 to 16,000 seconds.
【００１３】バインダー量に関して、本発明者の実験に
よれば、表２の結果を得た。なお、表中の評価は、５点
評価とし、点数が高いほど、良好であることを示す。後
述の結果も同様である。With respect to the amount of binder, the results of Table 2 were obtained according to the experiments by the present inventor. The evaluation in the table is a 5-point evaluation, and the higher the score, the better. The results described below are also the same.
【００１４】[0014]
【表２】 [Table 2]
【００１５】この結果から、バインダー量としては、Ｌ
／Ｓとしては、16〜20／２〜７部、特に18〜19／３〜６
部が好ましいことが判明した。さらに、この場合、ＳＢ
Ｒラテックスの影響が大きく、デンプンの影響は比較的
少ないことも判った。From these results, the amount of binder is L
/ S is 16 to 20/2 to 7 parts, especially 18 to 19/3 to 6
It has been found that parts are preferred. Furthermore, in this case, SB
It was also found that the influence of R latex was large and the influence of starch was relatively small.
【００１６】透気度は、塗工量とも関連する。塗工量が
少ないと、透気度が低くなり、水性インキの吸水性が良
化するものの、油性インキの吸収性が過度になる。水性
インキの吸水性を考えると、塗工量としては、１７ｇ／
m2以下が、油性インキおよびニスの吸収性の点からは、
１６ｇ／m2以上が好ましい。したがって、塗工量の点か
らも、相反する性質がある。他方、塗工の面質として
は、14〜20ｇ／m2が好適である。The air permeability is also related to the coating amount. If the coating amount is small, the air permeability will be low and the water absorption of the water-based ink will be improved, but the absorption of the oil-based ink will be excessive. Considering the water absorption of water-based ink, the coating amount is 17 g /
m 2 or less, from the viewpoint of the absorbability of oil-based ink and varnish,
It is preferably 16 g / m 2 or more. Therefore, there is a contradictory property in terms of the amount of coating. On the other hand, the surface quality of coating is preferably 14 to 20 g / m 2 .
【００１７】塗工量と透気度、吸水性、およびニスの浸
透性の結果を表３に示す。Table 3 shows the results of the coating amount, air permeability, water absorption, and varnish permeability.
【００１８】[0018]
【表３】 [Table 3]
【００１９】一方、原紙のスーパーカレンダー処理にお
けるニップ圧を上げると、紙が締まり、透気度が高くな
る。反対に水性インキの受理性が悪化する。ニップ圧を
低下させると、逆の性質を示す。この結果を、表４に示
す。なお、Ｌ／Ｓは20／６とした。好適なニップ圧は、
120 〜170 kg／cmである。On the other hand, when the nip pressure in the super calendering of the base paper is increased, the paper is tightened and the air permeability is increased. On the contrary, the acceptability of the water-based ink deteriorates. Reducing the nip pressure shows the opposite properties. The results are shown in Table 4. The L / S was set to 20/6. The suitable nip pressure is
120 to 170 kg / cm.
【００２０】[0020]
【表４】 [Table 4]
【００２１】本発明において、紫外線硬化型ニスとして
は、公知のものを用いることができるが、その例示とし
て、プレポリマーとしてポリエステル、ポリエーテル、
エポキシ、ウレタンのアクリレートを、モノマーとして
単官能モノマーまたは多官能モノマーを、光増感剤とし
てベンゾフェノン系、アセトフェノン系、アリルケトン
系などを挙げることができる。添加剤のレベリング剤と
して、シリコンオイルを、滑剤としてポリエチレンワッ
クス、脂肪酸エステル、脂肪酸アマイド、シリコンなど
を挙げることができる。In the present invention, as the UV curable varnish, known UV varnishes can be used, and examples thereof include polyester, polyether as a prepolymer,
Examples thereof include acrylates of epoxy and urethane, monofunctional monomers or polyfunctional monomers as monomers, and benzophenone-based, acetophenone-based, and allylketone-based photosensitizers. As an additive leveling agent, silicone oil can be used, and as a lubricant, polyethylene wax, fatty acid ester, fatty acid amide, silicone and the like can be mentioned.
【００２２】コート紙として、前記のバインダーのほ
か、クレーや炭酸カルシウムなどの填料、耐水化剤、潤
滑剤、保水剤などを使用して、常法によって得ることが
できる。As the coated paper, in addition to the above-mentioned binder, a filler such as clay or calcium carbonate, a water-proofing agent, a lubricant, a water retention agent, etc. can be used and obtained by a conventional method.
【００２３】[0023]
【発明の効果】以上の通り、本発明によれば、水性イン
キの受理性が良好となり、かつ油性インキによる印刷で
あっても、充分良好な特性を示すようになる。As described above, according to the present invention, the acceptability of the water-based ink becomes good, and even when printing with the oil-based ink, sufficiently good characteristics are exhibited.
Claims (1)
硬化型ニスを塗布して紫外線照射を行う製袋用コート紙
において、 前記原紙の透気度が8,000 〜18,000秒であることを特徴
とする紫外線硬化型ニス塗布が行われる製袋用コート
紙。1. A bag-making coated paper in which an ultraviolet-curable varnish is applied to the surface of a base paper after printing, and the surface of the base paper is irradiated with ultraviolet rays. The air permeability of the base paper is 8,000 to 18,000 seconds. Characteristic UV-curable varnish coated bag-making coated paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04002828A JP3121895B2 (en) | 1992-01-10 | 1992-01-10 | Coated paper for bag making with UV-curable varnish coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04002828A JP3121895B2 (en) | 1992-01-10 | 1992-01-10 | Coated paper for bag making with UV-curable varnish coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05186997A true JPH05186997A (en) | 1993-07-27 |
| JP3121895B2 JP3121895B2 (en) | 2001-01-09 |
Family
ID=11540281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04002828A Expired - Fee Related JP3121895B2 (en) | 1992-01-10 | 1992-01-10 | Coated paper for bag making with UV-curable varnish coating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3121895B2 (en) |
-
1992
- 1992-01-10 JP JP04002828A patent/JP3121895B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3121895B2 (en) | 2001-01-09 |
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