JPH06316432A - Laminated paper for glass - Google Patents

Abstract

PURPOSE:To simplify the cleaning process before using a glass and suppress water repellency, paper mark or burning by incorporating sodium tripolyphosphate to moderate the control range of property. CONSTITUTION:The inter-leaf for glass incorporated with >=0.1wt.% sodium tripolyphosphate is obtained by spraying a sodium tripolyphosphate aq. solution on the inter-leaf for glass and drying to uniformly coat on the fiber surface of the leaf. Sodium tripolyphosphate is transferred from the paper to the surface of the glass so that the trace of the sodium tripolyphosphate exists on the surface of the glass by spreading the inter-leaf between the glasses, transporting and storing. An organic material transferred from the leaf to the glass side simultaneously or after sodium tripolyphosphate is transferred is not in contact with the glass surface directly and is easily removed from the glass by washing. As a result, the glass surface free from water repellency and paper mark is obtained and the proceeding of the burning of the glass is prevented by suppressing the rise of pH on the glass surface by the hydrolysis of sodium tripolyphosphate.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明はガラス面上に発生する撥
水性、紙アト、ヤケを抑制するため、トリポリリン酸ナ
トリウムを含有せしめたガラス用合紙に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass interleaving paper containing sodium tripolyphosphate in order to suppress water repellency, paper dust and burn on the glass surface.

【０００２】[0002]

【従来の技術】板ガラスの輸送、保管時にはガラス間に
合紙と称する紙を挟み込む。しかし合紙に含まれる樹脂
分等の有機物質がガラス面上に付着し、ガラス面に撥水
性又は紙アトと称する視認し得る紋様、ヘーズが生ずる
場合がある。2. Description of the Related Art When transporting and storing flat glass, paper called interleaving paper is sandwiched between the glasses. However, an organic substance such as a resin component contained in the interleaving paper may adhere to the glass surface to cause water repellency or a visible pattern or haze called a paper atom on the glass surface.

【０００３】これらを防止するためには合紙の樹脂分の
低減（特開昭６０−１８１３９９等）、表面粗度の調
整、吸水度の増加（特開昭４９−７２３１４）、あるい
は一定量以上のアルミナの含有（特開昭６０−１６６２
４６）等が図られてきた。In order to prevent these, the resin content of the interleaving paper is reduced (JP-A-60-181399, etc.), surface roughness is adjusted, water absorption is increased (JP-A-49-72314), or a certain amount or more. Containing alumina (Japanese Patent Laid-Open No. 60-1662)
46) and so on.

【０００４】[0004]

【発明が解決しようとする課題】しかし近年のガラスの
用途多様化に伴い、表面清浄性への要求が高まり、表面
のわずかな撥水性が忌避される場合が増加している。清
浄なガラス表面は、水の接触角にして１０度以下で親水
性といえ、極めてわずかな有機物質（例えば、数分子
層）の付着により撥水性を呈する。したがって、本来有
機物である紙を用いるかぎり撥水性の完全なる回避は極
めて困難という課題があった。However, with the recent diversification of uses of glass, the demand for surface cleanliness has increased, and in some cases the slight water repellency of the surface is avoided. It can be said that a clean glass surface is hydrophilic at a contact angle of water of 10 degrees or less, and exhibits water repellency due to the adhesion of an extremely small amount of an organic substance (for example, several molecular layers). Therefore, there is a problem that it is extremely difficult to completely avoid water repellency as long as paper, which is originally an organic substance, is used.

【０００５】本発明は、従来の技術が有していた上記課
題を解消し、ガラスがほとんどの場合、輸送して保管
し、使用の際、洗浄されることを勘案し、紙からの有機
物がガラス面上に付着しても、それが容易に洗浄により
除去され、清浄面を回復することができるガラス用合紙
を提供するものである。The present invention solves the above problems of the prior art, and in consideration of the fact that glass is transported and stored in most cases, and is washed during use, organic matter from paper is taken into consideration. It is intended to provide a glass interleaving paper which can be easily removed by washing even if it adheres to a glass surface to recover a clean surface.

【０００６】[0006]

【課題を解決するための手段】本発明は、トリポリリン
酸ナトリウムを０．１重量％以上含むガラス用合紙であ
る。The present invention is an interleaving paper for glass containing 0.1% by weight or more of sodium tripolyphosphate.

【０００７】本発明において、トリポリリン酸ナトリウ
ムの含有量が０．１重量％未満では、ガラス面に付着し
た紙の有機物が洗浄により除去され難く、清浄なガラス
面を得ることが難しい。トリポリリン酸ナトリウムの含
有状態は、紙の繊維表面を均一に被覆していることが、
後に記載する作用を効果的に発現させるうえで望まし
い。In the present invention, when the content of sodium tripolyphosphate is less than 0.1% by weight, it is difficult to remove the organic matter of the paper adhering to the glass surface by washing, and it is difficult to obtain a clean glass surface. The content state of sodium tripolyphosphate is that the fiber surface of the paper is uniformly coated,
It is desirable for effectively exhibiting the action described later.

【０００８】[0008]

【作用】本発明においては、トリポリリン酸ナトリウム
が合紙からガラス面に転移し、ガラス面上に微量存在し
た状態になる。したがって、トリポリリン酸ナトリウム
と同時に又は後からガラス側に転移した紙からの有機物
質はガラス面に直接接触しない。この状態のガラスを水
洗した場合、有機物質は水に溶解、脱離するトリポリリ
ン酸ナトリウムに同伴されて極めて容易にガラスから除
去され、撥水性、紙アトのない清浄なガラス面が得られ
る。In the present invention, sodium tripolyphosphate is transferred from the interleaving paper to the glass surface and is present in a trace amount on the glass surface. Therefore, organic substances from the paper that have been transferred to the glass side at the same time as or after the sodium tripolyphosphate do not come into direct contact with the glass surface. When the glass in this state is washed with water, the organic substance is very easily removed from the glass by being entrained in sodium tripolyphosphate which dissolves in water and desorbs, and a clean glass surface free from water repellency and paper dust can be obtained.

【０００９】また、一部ガラス面と接触しガラス面上の
シラノール基と水素結合を形成するなどして強固に付着
している有機物質が存在したとしても、トリポリリン酸
ナトリウムがガラス表面をわずかに溶解することからこ
れも容易に除去できる。Further, even if there is an organic substance strongly adhered to the glass surface by contacting with the glass surface and forming a hydrogen bond with the silanol group on the glass surface, sodium tripolyphosphate slightly causes the glass surface to adhere. Since it dissolves, this too can be easily removed.

【００１０】[0010]

【実施例】トリポリリン酸ナトリウム水溶液を噴霧後乾
燥し、約５重量％含有せしめた樹脂分含有量の異なる３
種のガラス用合紙（Ａ、Ｂ、Ｃ）を作成した。これらの
ガラス用合紙の樹脂分含有量（ＪＩＳ Ｐ８２５０によ
り測定）は、表１の樹脂分の欄（単位；重量％）に示し
た。EXAMPLE An aqueous solution of sodium tripolyphosphate was sprayed and then dried to contain about 5% by weight of different resin contents.
Seed interleaving papers for glass (A, B, C) were prepared. The resin content (measured according to JIS P8250) of these glass interleaving papers is shown in the resin content column of Table 1 (unit: wt%).

【００１１】これらのガラス用合紙を液晶用超薄板ガラ
ス（１．１ｍｍ厚）の間に挿入した。次いで、この板ガ
ラスを２０℃、湿度８０％ＲＨの恒温恒湿槽内に１０日
間保管した。次いで、水洗し、水洗前後の接触角を測定
し、その結果を表１の実施例の欄（単位；度）に示し
た。なお、合紙Ｃは、平滑性が低い面（ザラ面）と平滑
性が高い面（ツル面）があり、両面について測定した。
比較例としてトリポリリン酸ナトリウムを含有しない同
一の合紙についても同様のテスト、同様の測定を行な
い、その結果を表１の比較例の欄に示した。These glass interleaving papers were inserted between ultra thin glass sheets for liquid crystal (1.1 mm thick). Next, this plate glass was stored for 10 days in a thermo-hygrostat at 20 ° C. and a humidity of 80% RH. Then, it was washed with water and the contact angle before and after the water washing was measured, and the results are shown in the column (unit: degree) of the example in Table 1. The interleaving paper C had a surface with low smoothness (rough surface) and a surface with high smoothness (vine surface), and both surfaces were measured.
As a comparative example, the same test and the same measurement were performed on the same interleaving paper containing no sodium tripolyphosphate, and the results are shown in the comparative example column of Table 1.

【００１２】[0012]

【表１】 [Table 1]

【００１３】表１によると、樹脂分の多少にかかわら
ず、トリポリリン酸ナトリウムを含有させた場合は、す
べての合紙において、接触角が小さく、水洗により容易
に撥水性の原因となる汚染を除去しうることが判る。According to Table 1, regardless of the resin content, when sodium tripolyphosphate is contained, the contact angle is small in all interleaving papers, and water-repellent stains are easily removed by washing with water. I understand that it is possible.

【００１４】[0014]

【発明の効果】本発明による合紙を使用することにより
以下のような効果が得られる。合紙の性状を従来のよう
に厳密に制御することなく、ガラス面上の撥水性、紙ア
トを回避することができる。ガラスを輸送、保管する
際、合紙あるいは雰囲気中からのガラスへ付着する汚染
物質を低減するために、雰囲気の温度、湿度、清浄度を
制御する範囲が従来に比べ大幅に緩和される。ガラスを
使用する前に実施する洗浄工程が簡便になる。すなわち
洗剤として用いる界面活性剤、洗浄槽に具備する超音波
発生器、ブラシ等を省略しても同等以上の汚染除去効果
が期待される。トリポリリン酸ナトリウムが加水分解し
て水酸基を消費するため、ガラス面上の水酸基濃度（ｐ
Ｈ）の上昇を抑制し、これによりガラスのヤケの進行を
抑える。The following effects are obtained by using the interleaving paper according to the present invention. It is possible to avoid water repellency and paper dust on the glass surface without strictly controlling the properties of the interleaving paper as in the past. When transporting and storing glass, in order to reduce contaminants adhering to the glass from the interleaving paper or the atmosphere, the range in which the temperature, humidity and cleanliness of the atmosphere are controlled is greatly relaxed as compared with the prior art. The cleaning process performed before using the glass is simplified. That is, even if the surfactant used as a detergent, the ultrasonic generator provided in the cleaning tank, the brush, etc. are omitted, the same or more decontamination effect is expected. Since sodium tripolyphosphate hydrolyzes and consumes hydroxyl groups, the concentration of hydroxyl groups on the glass surface (p
Suppressing the rise of (H), thereby suppressing the progress of glass burn.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 藤田 英博 神奈川県横浜市鶴見区末広町１丁目１番地 旭硝子株式会社京浜工場内 (72)発明者 工藤 透 神奈川県横浜市鶴見区末広町１丁目１番地 旭硝子株式会社京浜工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hidehiro Fujita, 1-1, Suehiro-cho, Tsurumi-ku, Yokohama-shi, Kanagawa Asahi Glass Co., Ltd. Keihin factory (72) Inventor Toru Kudo, 1-1, Suehiro-cho, Tsurumi-ku, Yokohama-shi, Kanagawa Address Inside the Keihin factory of Asahi Glass Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】トリポリリン酸ナトリウムを０．１重量％
以上含むガラス用合紙。1. 0.1% by weight of sodium tripolyphosphate
Glass interleaving paper including the above.