JPH0229800B2 - - Google Patents
Info
- Publication number
- JPH0229800B2 JPH0229800B2 JP60218559A JP21855985A JPH0229800B2 JP H0229800 B2 JPH0229800 B2 JP H0229800B2 JP 60218559 A JP60218559 A JP 60218559A JP 21855985 A JP21855985 A JP 21855985A JP H0229800 B2 JPH0229800 B2 JP H0229800B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- transparency
- transparent
- metal alkoxide
- present
- 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.)
- Expired - Lifetime
Links
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 17
- 150000004703 alkoxides Chemical class 0.000 claims description 15
- 239000000945 filler Substances 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000123 paper Substances 0.000 description 88
- 238000000034 method Methods 0.000 description 17
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 15
- 238000000576 coating method Methods 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 11
- ZQZCOBSUOFHDEE-UHFFFAOYSA-N tetrapropyl silicate Chemical compound CCCO[Si](OCCC)(OCCC)OCCC ZQZCOBSUOFHDEE-UHFFFAOYSA-N 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 239000011086 glassine Substances 0.000 description 8
- 238000007654 immersion Methods 0.000 description 7
- 238000007639 printing Methods 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- JTBKFHQUYVNHSR-UHFFFAOYSA-N propan-2-yloxyalumane Chemical compound CC(C)O[AlH2] JTBKFHQUYVNHSR-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- GWYDZVYZTDJZQB-UHFFFAOYSA-N CCCO[Zr] Chemical compound CCCO[Zr] GWYDZVYZTDJZQB-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- HSRJKNPTNIJEKV-UHFFFAOYSA-N Guaifenesin Chemical compound COC1=CC=CC=C1OCC(O)CO HSRJKNPTNIJEKV-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000008395 clarifying agent Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000009512 pharmaceutical packaging Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Description
〔産業上の利用分野〕
本発明は、寸法安定性にすぐれかつカールしに
くい透明紙に関するものであつて、特にトレーシ
ングペーパー、PPC第２原図用紙、コピー用紙、
漢字プリンター用紙、ワープロ用紙、透明包装紙
等に好適に使用できる透明度の向上した透明紙の
製造方法に関するものである。
〔従来の技術〕
透明度のある紙は、従来、グラシン紙のように
無処理で半透明な紙のほか例えばワツクス、ポリ
エステル樹脂、ポリプロピレングリコールのグリ
セリンエーテル等の有機透明化剤を紙にコーテイ
ングすることによつて製造されている。しかしな
がら、これらの透明化剤でコーテイング処理した
透明化紙は、通常透明化剤の耐熱性が低いために
使用中や保存中にべたつきやブロツキングを生じ
るという欠点を有している。またゼロツクス等の
複写機で使用する複写用紙としてこれらの紙を用
いると、複写時に焼付け部分で臭気を発生しやす
いという欠点がある。又、これらの透明化紙に印
刷加工を施す場合には印刷インキの密着が阻害さ
れたり、透明化剤の移行によりインキが変色する
という欠陥がある。従つてこれらの欠点を改良す
べく種々の提案がなされているが、いまだにこれ
らのすべての欠点を改良する有効な方法が見出さ
れていないのが現状である。
〔発明が解決しようとする問題点〕
本発明は耐熱性、印刷適性等について従来の透
明化紙が有する欠点を解決すると同時に任意の透
明度を存し、かつべたつかない透明紙の製造方法
を提供することを目的とする。
本発明は、さらに寸法安定性にすぐれ、かつカ
ールしにくい紙を提供することを目的とする。
〔問題点を解決するための手段〕
上記問題点は、填料の少ない紙を特定の金属ア
ルコキシドで処理した後、特定の条件で加熱乾燥
することによつて解決できた。従つて、本発明
は、填料の含有量が０〜５重量％である紙を、一
般式（）：
Ｍ（OR）ｎ ……（）
（式中、Ｍは２〜４価の金属原子、Ｒはアルキ
ル基、ｎはＭの原子価に対応する整数を示す。）
で表される金属アルコキシドで処理した後、140
〜180℃で10秒〜３分間加熱乾燥することを特徴
とする透明紙の製造方法を提供する。
本発明で用いる金属アルコキシドは上記一般式
（）で示されるものであるが、式中、Ｍとして
は、ケイ素、ジルコニウム、鉄、スズ、カルシウ
ム、チタン、アルミニウムが好ましく、特に好ま
しいのはケイ素である。又、式中、Ｒとしては、
炭素数が１〜10のアルキル基が例示されるが、炭
素数が１〜６のアルキル基が好ましく、特に好ま
しくはプロピル及びイソプロピルである。
本発明では、上記の金属アルコキシドを単独又
はメタノール、エタノール、イソプロピルアルコ
ールなどのアルコール等の溶媒に溶解又は分散さ
せ、これを常法により紙に塗布又は含浸させ（以
下、塗工という）、しかる後、該塗工紙を加熱す
るものである。反応の詳細は不明であるが、上記
処理により金属アルコキシドは加水分解と脱水反
応とにより金属酸化物等に変化し、同時に紙を透
明にし、寸法安定性を付与し、又紙がカールしな
いようにする等、種々の特性を紙に付与するもの
と推定される。尚、上記金属アルコキシド処理に
あたり、金属アルコキシドに反応促進剤を添加す
ることができる。
ここで、金属アルコキシドの紙への塗工量は目
的によつて異なるので特に限定されないが、一般
的には紙に対し金属アルコキシドが１〜40重量％
（以下％と略称する。）となるように塗布する。
又、塗工方式としてはロールコーター方式、ブレ
ードコーター方式、ロツドコーター方式、スクイ
ズコーター方式、グラビアコーター方式、リバー
スコーター方式、マイヤーバーコーター方式、含
浸機方式等既存の方式がすべて使用出来るが、な
かでも定量化塗工の点からグラビアコーター方
式、リバースコーター方式、マイヤーバーコータ
ー方式が好ましい。
塗工後の紙は、140〜180℃の温度で10秒〜３分
間加熱乾燥される。
本発明において金属アルコキシドで処理される
紙としては、填料の含有量が０〜５重量％の紙が
あげられ、特に不透明填料と含有しない紙を用い
るのがよい。このような紙としては、グラシン
紙、コピー用原稿用紙、純白ロール紙等の包装用
紙、非顔料塗工の印刷用紙、模造紙、和紙等が例
示される。これらの紙としては、一般的には坪量
20〜150ｇ／m2のものが使用される。
〔発明の効果〕
以上詳述した通り、本発明によると、透明度の
高い紙が提供されるが、得られた透明化紙はさら
に次に示すような特徴を有する。
(i) べたつきやブロツキングを生ぜず、又複写時
に息気を発生しない。
(ii) 鮮明な印刷を行なうことが出来、インキの変
色がない。又、プリンターでの印字も鮮明であ
り、寸法安定性も良い。
(iii) カールを生じないので複写機での通紙性が良
い。
(v) 金属アルコキシド処理する紙として、填料の
含有量が異なるものを用いることにより種々の
透明度の紙が得られる。従つて本発明は透明性
を必要とする紙、特にトレーシングペーパー、
PPC第２原図用紙、コピー用紙、漢字プリン
ター用紙、ワープロ用紙、包装紙等として用い
た場合にきわめて有用である。
次に実施例により本発明を説明する。
〔実施例〕
本発明の実施例において、各種性能は下記の方
法により測定した。
(1) 透明度；TSS式透明度試験機（東洋精機製
作所製）を使用した。
(2) ゼロツクス適性；富士ゼロツクス製3970型を
使用し、通紙性、コピー性を調べた。
(3) ジアゾコピー速度；コピースターED400（三
田工業製）を使用した。
ジアゾ感光紙EDを使用し、コピー用紙と重
ね合せ、感光後の濃度を調べた。濃度計はサク
ラPDA−30を使用し、濃度1.5の時のコピー速
度を比較した。
(4) 浸水伸度；Japan TappiNo.27A法による。サ
ンプルを20℃の水中に30分浸漬し、よこ方向の
伸縮率をブランクと比較した。測定は無荷重で
行なつた。
(5) 透気度；Japan TappiNo.５王研式測定法に
より測定した。
実施例 １
テトラプロポキシシランをイソプロピルアルコ
ールで1.5倍に希釈し、適性粘度に調節し、この
溶液を40ｇ／m2の上質紙（厚さ54mm、透明度44
％、填料タルク：５％含有）に塗工し、150℃で
60秒乾燥して、酸化ケイ素分含有率５％の透明化
紙を得た。尚、前記上質紙へのテトラプロポキシ
シランの塗工量は８ｇ／m2であつた。
実施例 ２
テトラプロポキシシランとプロポキシジルコニ
ウム（９：１の重量比）をイソプロピルアルコー
ルで希釈した他は実施例１と全く同様の試験を行
なつた。
比較例１及び２
市販の透明化剤ヒシレツクス807C（中京油脂
製）を実施例１で用いたのと同じ上質紙に６％塗
工して比較例１とした。また市販のPPC第２原
図用紙（透明化剤（ポリエステル）：12〜３％含
有）を比較例２とした。実施例１，２及び比較例
１，２で得た紙の特性をまてめて表−１に示す。
[Industrial Application Field] The present invention relates to transparent paper that has excellent dimensional stability and is resistant to curling, and is particularly applicable to tracing paper, PPC second original paper, copy paper,
The present invention relates to a method for producing transparent paper with improved transparency that can be suitably used for kanji printer paper, word processing paper, transparent wrapping paper, etc. [Prior Art] Transparent paper has conventionally been produced by coating the paper with an organic transparency agent such as wax, polyester resin, glycerin ether of polypropylene glycol, etc., as well as untreated translucent paper such as glassine paper. Manufactured by. However, transparent paper coated with these transparentizing agents usually has the disadvantage that it becomes sticky or blocked during use or storage due to the low heat resistance of the transparentizing agent. Furthermore, when these papers are used as copying paper for copying machines such as Xerox, they have the disadvantage that they tend to generate odor in the burned areas during copying. Furthermore, when printing is applied to these transparent papers, there are defects in that the adhesion of the printing ink is inhibited and the ink changes color due to migration of the transparentizing agent. Therefore, although various proposals have been made to improve these drawbacks, the current situation is that no effective method for improving all of these drawbacks has yet been found. [Problems to be Solved by the Invention] The present invention solves the drawbacks of conventional transparent paper in terms of heat resistance, printability, etc., and at the same time provides a method for producing transparent paper that has arbitrary transparency and is not sticky. The purpose is to Another object of the present invention is to provide paper that has excellent dimensional stability and is resistant to curling. [Means for Solving the Problems] The above problems could be solved by treating paper with a small amount of filler with a specific metal alkoxide and then heating and drying it under specific conditions. Therefore, the present invention provides paper having a filler content of 0 to 5% by weight with the general formula (): M(OR)n...() (wherein M is a divalent to tetravalent metal atom, R is an alkyl group, and n is an integer corresponding to the valence of M.)
After treatment with metal alkoxide represented by 140
Provided is a method for producing transparent paper, characterized by heating and drying at ~180°C for 10 seconds to 3 minutes. The metal alkoxide used in the present invention is represented by the above general formula (), where M is preferably silicon, zirconium, iron, tin, calcium, titanium, or aluminum, with silicon being particularly preferred. . In addition, in the formula, R is
Examples include alkyl groups having 1 to 10 carbon atoms, preferably alkyl groups having 1 to 6 carbon atoms, and particularly preferably propyl and isopropyl. In the present invention, the above-mentioned metal alkoxide is used alone or dissolved or dispersed in a solvent such as alcohol such as methanol, ethanol, isopropyl alcohol, etc., and this is coated or impregnated on paper by a conventional method (hereinafter referred to as coating). , the coated paper is heated. Although the details of the reaction are unknown, the above treatment transforms the metal alkoxide into metal oxides through hydrolysis and dehydration reactions, and at the same time makes the paper transparent, gives it dimensional stability, and prevents the paper from curling. It is presumed that it imparts various properties to paper, such as: Incidentally, in the metal alkoxide treatment, a reaction accelerator can be added to the metal alkoxide. Here, the amount of metal alkoxide applied to the paper is not particularly limited as it varies depending on the purpose, but generally the amount of metal alkoxide applied to the paper is 1 to 40% by weight.
(hereinafter abbreviated as %).
In addition, all existing coating methods can be used such as roll coater method, blade coater method, rod coater method, squeeze coater method, gravure coater method, reverse coater method, Meyer bar coater method, and impregnation machine method. From the viewpoint of quantitative coating, a gravure coater method, a reverse coater method, and a Meyer bar coater method are preferred. After coating, the paper is heated and dried at a temperature of 140 to 180°C for 10 seconds to 3 minutes. In the present invention, the paper treated with a metal alkoxide includes a paper having a filler content of 0 to 5% by weight, and it is particularly preferable to use a paper containing no opaque filler. Examples of such paper include glassine paper, manuscript paper for copying, packaging paper such as pure white roll paper, non-pigment coated printing paper, imitation paper, and Japanese paper. These papers generally have a basis weight
20 to 150 g/m 2 is used. [Effects of the Invention] As detailed above, according to the present invention, highly transparent paper is provided, and the obtained transparent paper further has the following characteristics. (i) Does not cause stickiness or blocking, and does not generate breath when copying. (ii) Clear printing is possible and there is no discoloration of the ink. Furthermore, the printing on the printer is clear and the dimensional stability is also good. (iii) Since it does not curl, it has good paper passing properties in a copying machine. (v) By using metal alkoxide-treated papers with different filler contents, papers of various transparency can be obtained. Therefore, the present invention is applicable to paper that requires transparency, especially tracing paper,
It is extremely useful when used as PPC second original drawing paper, copy paper, kanji printer paper, word processing paper, wrapping paper, etc. Next, the present invention will be explained with reference to examples. [Example] In Examples of the present invention, various performances were measured by the following methods. (1) Transparency: A TSS type transparency tester (manufactured by Toyo Seiki Seisakusho) was used. (2) Xerox suitability: Fuji Xerox Model 3970 was used to examine paper passing and copying properties. (3) Diazo copy speed: Copystar ED400 (manufactured by Sanda Kogyo) was used. Using diazo photosensitive paper ED, it was layered with copy paper and the density after exposure was examined. A Sakura PDA-30 was used as the densitometer, and the copy speeds at a density of 1.5 were compared. (4) Water immersion elongation: Based on Japan Tappi No. 27A method. The sample was immersed in water at 20°C for 30 minutes, and the expansion and contraction ratio in the horizontal direction was compared with a blank. Measurements were performed without any load. (5) Air permeability: Measured by Japan Tappi No. 5 Oken method. Example 1 Tetrapropoxysilane was diluted 1.5 times with isopropyl alcohol, adjusted to an appropriate viscosity, and the solution was mixed with 40 g/m 2 of high-quality paper (thickness: 54 mm, transparency: 44 mm).
%, filler talc: 5%) and heated at 150℃.
After drying for 60 seconds, a transparent paper with a silicon oxide content of 5% was obtained. The amount of tetrapropoxysilane applied to the above-mentioned high-quality paper was 8 g/m 2 . Example 2 A test was conducted in exactly the same manner as in Example 1, except that tetrapropoxysilane and propoxyzirconium (9:1 weight ratio) were diluted with isopropyl alcohol. Comparative Examples 1 and 2 Comparative Example 1 was prepared by applying 6% of the commercially available clarifying agent Hishirex 807C (manufactured by Chukyo Yushi Co., Ltd.) to the same high-quality paper as used in Example 1. In addition, a commercially available PPC second original drawing paper (containing 12 to 3% of transparentizing agent (polyester)) was used as Comparative Example 2. The properties of the papers obtained in Examples 1 and 2 and Comparative Examples 1 and 2 are summarized in Table 1.
【表】
表−１より、本発明にかかる実施例１及び２に
より金属アルコキシド処理した紙は、透明度、浸
水伸度、コピーの鮮明さ等においてきわめて良好
な結果を示すのに加えて、通紙時及び通紙後にカ
ールしないことを必要とするゼロツクス通紙性、
ジアゾコピー速度等においても従来品に比べてす
ぐれた効果を有することがわかる。一方、比較例
２の市販PPC第２原図用紙は透明化剤の含有率
が高いうえ本発明品に比較して浸水伸度がわるか
つた。
実施例 ３
イソプロポキシアルミニウムを含むイソプロピ
ルアルコールの溶液を40ｇ／m2のグラシン紙（填
料０％）に両面塗工し、実施例１と同様にして乾
燥を行ない、透明度79％、浸水伸度2.8％、透気
度100000秒以上を有する透明化紙を得た。尚、イ
ソプロポキシアルミニウムの塗工量は40％であ
る。この紙にポリラミ加工を施し、薬品包装紙と
して使用したところ透明度が高く無色なので、包
装内容品を容易に判別出来、商品価値を高めるこ
とが出来た。
実施例 ４
テトラメトキシチタネートを含むメチルアルコ
ール溶液を、坪量が50ｇ／m2の純白ロール紙（透
明度38％、浸水伸度0.6％、填料０％）に片面塗
工し、150℃で60秒間乾燥を行なつた。その結果
透明度41％、浸水伸度0.5％の紙も得た。尚、テ
トラメトキシチタネートの塗工量は８％である。
この紙を漢字プリンター用紙としてPC−PR−
201（NEC製）のプリンターにて印字した。又、
通紙試験を20℃で湿度を20％RHから80％RHに
変えた雰囲気で行なつた。その結果本発明品は湿
度変化に対しなんらのトラブルも生ずることなく
印字も鮮明であつた。しかし市販のプリンター用
紙〔白上質40K（小林記録紙製）〕及びPPC第２原
図用紙（比較例２）を比較試験したところ高湿度
で吸湿ジワが発生するため紙がピンヘツドに当
り、紙破れを生じた。
実施例 ５
テトラプロポキシシランをイソプロピルアルコ
ールで希釈し、適性粘度に調節して40ｇ／m2のグ
ラシン紙（填料０％）及び50ｇ／m2の純白ロール
紙（填料０％）に塗工量を変えて塗工し、150℃
で60秒乾燥してテトラプロポキシシラン塗工量の
異なる透明なグラシン紙及び純白ロール紙を得
た。
このグラシン紙及び純白ロール紙についてテト
ラプロポキシシラン塗工量と透明度、浸水伸度の
関係を調べた。結果をまとめて第１図及び第２図
に示した。第１図からテトラプロポキシシランの
塗工量が増加すると透明度が向上するが、この効
果は特に純白ロールのような含浸性の良い紙で顕
著なことが明らかである。また、第２図からテト
ラプロポキシシランの塗工量が増加すると紙の伸
びが小さくなり、特に伸びやすいグラシン紙のよ
うな紙においても顕著な寸法安定効果が得られる
ことがわかる。さらに、浸水伸度の向上と共に塗
工後のカールが著しく小さくなつた。
これらのうち、上記グラシン紙及び純白ロール
紙にテトラプロポキシシランを50％以上処理して
得た紙についてグラビア印刷とオフセツト印刷を
行なつたところ、印刷インキのハジキ、密着不
良、保存による退色等は認められなかつた。
実施例 ６
金属アルコキシドで処理した紙の加熱乾燥時間
を種々変更した以外は、実施例１と同様にして透
明化紙を製造した。結果をまとめて表−２に示
す。尚、表中、体積固有抵抗値の測定は、
JISC2330に記載の方法に準じておこなつた。
表−２の結果から明らかなように、加熱乾燥温
度が低いとべたつきを改良することができないが
（比較例No.４）、本発明の製造方法（本発明No.１〜
３）によれば、透明度に優れ、かつべたつきの少
ない透明紙を簡易に製造できることがわかる。
又、本発明の方法によれば紙の体積固有抵抗値が
高くなるので、トナーの付着性がよく、ゼロツク
スコピー性が良好になることがわかる。[Table] Table 1 shows that the paper treated with metal alkoxide according to Examples 1 and 2 according to the present invention not only shows very good results in terms of transparency, elongation under water, clarity of copying, etc. Xerox paper passing properties, which require no curling during time and after paper passing;
It can be seen that it has superior effects compared to conventional products in terms of diazocopy speed, etc. On the other hand, the commercially available PPC second original paper of Comparative Example 2 had a high content of transparentizing agent and had a lower water immersion elongation than the product of the present invention. Example 3 A solution of isopropyl alcohol containing isopropoxyaluminum was coated on both sides of 40 g/m 2 glassine paper (0% filler) and dried in the same manner as in Example 1, resulting in a transparency of 79% and a water immersion elongation of 2.8. %, and a transparent paper having an air permeability of 100,000 seconds or more was obtained. Incidentally, the coating amount of isopropoxy aluminum was 40%. When this paper was polylaminated and used as drug packaging paper, it was highly transparent and colorless, making it easy to identify the contents of the package and increasing the product value. Example 4 A methyl alcohol solution containing tetramethoxy titanate was coated on one side of pure white roll paper (transparency 38%, water immersion elongation 0.6%, filler 0%) with a basis weight of 50 g/m 2 and heated at 150°C for 60 seconds. I did drying. As a result, paper with transparency of 41% and elongation under water of 0.5% was obtained. Incidentally, the coating amount of tetramethoxy titanate was 8%.
Use this paper as kanji printer paper for PC-PR-
201 (manufactured by NEC) printer. or,
The paper passing test was conducted at 20°C in an atmosphere where the humidity was changed from 20% RH to 80% RH. As a result, the product of the present invention did not cause any trouble due to changes in humidity and the printing was clear. However, in a comparative test of commercially available printer paper [White High Quality 40K (manufactured by Kobayashi Recording Paper)] and PPC 2nd Original Drawing Paper (Comparative Example 2), moisture absorption wrinkles occur due to high humidity, and the paper hits the pin head, resulting in paper tearing. occured. Example 5 Tetrapropoxysilane was diluted with isopropyl alcohol, adjusted to an appropriate viscosity, and coated on 40 g/m 2 glassine paper (0% filler) and 50 g/m 2 pure white roll paper (0% filler). Coat at 150℃
The paper was dried for 60 seconds to obtain transparent glassine paper and pure white roll paper with different coating amounts of tetrapropoxysilane. The relationship between the coating amount of tetrapropoxysilane, transparency, and water immersion elongation was investigated for this glassine paper and pure white roll paper. The results are summarized in Figures 1 and 2. It is clear from FIG. 1 that as the coating amount of tetrapropoxysilane increases, the transparency improves, and this effect is particularly noticeable in papers with good impregnation properties, such as pure white rolls. Furthermore, from FIG. 2, it can be seen that as the coating amount of tetrapropoxysilane increases, the elongation of the paper becomes smaller, and a remarkable dimensional stabilization effect can be obtained even in paper such as glassine paper, which is particularly easy to elongate. Furthermore, along with the improvement in water immersion elongation, the curl after coating was significantly reduced. Among these, when gravure printing and offset printing were performed on the above-mentioned glassine paper and pure white roll paper obtained by treating 50% or more of tetrapropoxysilane, there were no problems such as printing ink repellency, poor adhesion, and discoloration due to storage. It wasn't recognized. Example 6 A transparent paper was produced in the same manner as in Example 1, except that the heating drying time of the metal alkoxide-treated paper was varied. The results are summarized in Table-2. In addition, in the table, the measurement of volume resistivity value is
This was done in accordance with the method described in JISC2330. As is clear from the results in Table 2, stickiness cannot be improved if the heat drying temperature is low (Comparative Example No. 4), but the production method of the present invention (Invention No. 1 to
According to 3), it can be seen that transparent paper with excellent transparency and less stickiness can be easily produced.
Furthermore, it can be seen that according to the method of the present invention, the volume resistivity of the paper is increased, so that toner adhesion is good and xerox copyability is improved.
【表】
＊ 手で触つた時の感触で評価した。
[Table] * Evaluation was made based on the feel when touching with the hand.
第１図は本発明の金属アルコキシド処理した紙
のテトラプロポキシシラン処理量と透明度の関係
を表わす図であり、第２図は同じくテトラプロポ
キシシラン処理量と浸水伸度の関係を表わす図で
ある。
FIG. 1 is a diagram showing the relationship between the amount of tetrapropoxysilane treated and the transparency of the metal alkoxide-treated paper of the present invention, and FIG. 2 is a diagram showing the relationship between the amount of tetrapropoxysilane treated and the water immersion elongation.
Claims (1)
般式（）： Ｍ（OR）ｎ ……（） （式中、Ｍは２〜４価の金属原子、Ｒはアルキ
ル基、ｎはＭの原子価に対応する整数を示す。）
で表される金属アルコキシドで処理した後、140
〜180℃で10秒〜３分間加熱乾燥することを特徴
とする透明紙の製造方法。[Claims] 1 Paper with a filler content of 0 to 5% by weight is prepared by the general formula (): M(OR)n...() (wherein M is a divalent to tetravalent metal atom, R is an alkyl group, and n is an integer corresponding to the valence of M.)
After treatment with metal alkoxide represented by 140
A method for producing transparent paper, characterized by heating and drying at ~180°C for 10 seconds to 3 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21855985A JPS6278297A (en) | 1985-10-01 | 1985-10-01 | Paper treated by metal alkoxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21855985A JPS6278297A (en) | 1985-10-01 | 1985-10-01 | Paper treated by metal alkoxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6278297A JPS6278297A (en) | 1987-04-10 |
| JPH0229800B2 true JPH0229800B2 (en) | 1990-07-02 |
Family
ID=16721841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21855985A Granted JPS6278297A (en) | 1985-10-01 | 1985-10-01 | Paper treated by metal alkoxide |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6278297A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01285376A (en) * | 1988-05-12 | 1989-11-16 | Tomoegawa Paper Co Ltd | Printing sheet |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5915594A (en) * | 1982-07-14 | 1984-01-26 | 大日精化工業株式会社 | Aluminum laminated paper |
-
1985
- 1985-10-01 JP JP21855985A patent/JPS6278297A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5915594A (en) * | 1982-07-14 | 1984-01-26 | 大日精化工業株式会社 | Aluminum laminated paper |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6278297A (en) | 1987-04-10 |
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