JPH03269065A - Paint for cover sheet - Google Patents
Paint for cover sheetInfo
- Publication number
- JPH03269065A JPH03269065A JP2065948A JP6594890A JPH03269065A JP H03269065 A JPH03269065 A JP H03269065A JP 2065948 A JP2065948 A JP 2065948A JP 6594890 A JP6594890 A JP 6594890A JP H03269065 A JPH03269065 A JP H03269065A
- Authority
- JP
- Japan
- Prior art keywords
- paint
- cover sheet
- polymer beads
- present
- cover
- 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.)
- Pending
Links
Landscapes
- Credit Cards Or The Like (AREA)
- Paints Or Removers (AREA)
- Paper (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はカバーシート用塗料、更に詳細には郵便はがき
等の紙片の表面の少なくとも一部分が見えなくなるよう
に隠蔽することが可能なカバーシート用の塗料およびカ
バーシートに関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a paint for cover sheets, and more particularly, a paint for cover sheets that can hide at least a portion of the surface of a piece of paper such as a postcard so that it cannot be seen. relating to paints and cover sheets.
〔従来の技術及び発明が解決しようとする課題〕近年、
銀行の預金残高の通知等の秘密事項を記載し７た郵便物
において、秘密事項記載欄を郵送中は隠しておき、正規
の受取人が簡単にその内容を読み取ることができる、様
々な剥離可能なカバーシートを用いた郵便はがきが開発
されている（実開平１−６７０７５号公報、実公昭５ｔ
−３７８９号公報、特開昭６４−３６４９０号公報、特
開昭６４−３６４９１号公報、特開昭６４−７７５９２
号公報など）。これらのカバーシートは、不透明顔料含
有塗液を紙にコートしたコート紙等の不透明な洋紙類を
用いているが、該カバシートでは隠蔽性が不充分である
という問題があった。[Problems to be solved by conventional techniques and inventions] In recent years,
For mail items that contain confidential information such as notifications of bank account balances, the confidential information field can be hidden during mailing and the official recipient can easily read the contents using various removable methods. A postcard using a cover sheet has been developed (Utility Model Publication No. 1-67075, Utility Model Publication No. 5T).
-3789, JP 64-36490, JP 64-36491, JP 64-77592
Publications, etc.). These cover sheets use opaque paper such as coated paper, which is coated with an opaque pigment-containing coating liquid, but these cover sheets have a problem in that they have insufficient hiding properties.
そこで、隠蔽性を更に上げる目的で、銀インク印刷やア
ルミ箔等を積層する方法も用いられてきた（特開昭６４
−３６４９０号公報）が、これもコストがかかり経済的
に不利であるという欠点を有していた。Therefore, methods of printing silver ink and laminating aluminum foil, etc., have been used to further improve concealment (Japanese Unexamined Patent Publication No. 64
36490), which also had the disadvantage of being costly and economically disadvantageous.
斯かる実情において本発明者は鋭意研究した結果、特定
の粒径のポリマービーズを含有させた塗料を用いれば、
飛躍的に隠蔽力が向上した安価なカバーシートが得られ
ることを見出［２、本発明を完成した。Under such circumstances, the inventor of the present invention conducted extensive research and found that if a paint containing polymer beads of a specific particle size is used,
It was discovered that an inexpensive cover sheet with dramatically improved hiding power could be obtained [2, and the present invention was completed.
すなわち、本発明は粒径が０．０５〜１５μｍのポリマ
ービーズを含有することを特、徴とするカバーシート用
塗料および当該ポリマービーズを含有する隠蔽層を有す
ることを特徴とするカバーシートを提供するものである
。That is, the present invention provides a paint for a cover sheet characterized by containing polymer beads having a particle size of 0.05 to 15 μm, and a cover sheet characterized by having a concealing layer containing the polymer beads. It is something to do.
本発明に用いられるポリマービーズは粒径が０．０５〜
１５μｍ１好ましくは０．１〜３μｍものであり、特に
空孔を有する中空ポリマービーズが隠蔽性の点から好ま
しい。この中空ポリマービーズは隼−空孔のもの、およ
び多孔のもののいずれをも用いることができ、例えばＯ
Ｐ−４２Ｍ、 ０Ｐ−６２（以上ローム＆ハース社製）
、５Ｘ−８６３（Ａ）、５Ｘ−８６４（Ａ）、５Ｘ−
８６５（Ａ） Ｃ以上日本合成ゴム■製）等の市販品を
使用することができる。これらのポリマービーズは全塗
料中に固形分として５〜５０重量％重量されることが好
ましい。The polymer beads used in the present invention have a particle size of 0.05 to
The diameter is 15 .mu.m, preferably 0.1 to 3 .mu.m, and hollow polymer beads having pores are particularly preferred from the viewpoint of concealment properties. The hollow polymer beads can be either hollow or porous; for example, O
P-42M, 0P-62 (manufactured by Rohm & Haas)
, 5X-863(A), 5X-864(A), 5X-
Commercially available products such as 865 (A) C or higher (manufactured by Japan Synthetic Rubber ■) can be used. Preferably, these polymer beads constitute 5 to 50% by weight of the solids in the total paint.
本発明のカバーシート用塗料には通常使用されている不
透明顔料を配合することができる。この不透明顔料とし
ては、例えばカオリンクレー、タルク、酸化チタン、酸
化亜鉛などが挙げられ、これらの不透明顔料は全塗料中
に固形分として５〜５０重量％重量されることか好まし
い。The paint for cover sheets of the present invention can contain commonly used opaque pigments. Examples of the opaque pigment include kaolin clay, talc, titanium oxide, zinc oxide, etc., and it is preferable that these opaque pigments are present in the total coating composition in an amount of 5 to 50% by weight as a solid content.
また、本発明のカバーシート用塗料には被膜形成性高分
子物質を配合することができる。この被膜形成性高分子
物質は水性塗料用組成物のバインダーとなるものであれ
ば特に限定されず、例えばビニル系樹脂エマルション、
ビニル系水溶性樹脂、ヒドロキシエチルセルロース、カ
ルボキシメチルセルロース、でん粉、カゼインなどが挙
げられ、これらの被膜形成性高分子物質は全塗料中に固
形分として１０〜３０重量％配重量れることか好ましい
。Furthermore, a film-forming polymeric substance can be blended into the coating material for cover sheets of the present invention. The film-forming polymeric substance is not particularly limited as long as it can serve as a binder for the water-based paint composition, such as vinyl resin emulsion,
Examples include vinyl water-soluble resins, hydroxyethyl cellulose, carboxymethyl cellulose, starch, casein, etc., and it is preferable that these film-forming polymeric substances are distributed in the total coating composition in an amount of 10 to 30% by weight as a solid content.
本発明のカバーシート用塗料の好ましい実施態様として
は、粒径が０．０５〜１５μｍのポリマービーズ、不透
明顔料及び被膜形成性高分子物質を含有する水性塗料が
挙げられる。A preferred embodiment of the cover sheet coating of the present invention is a water-based coating containing polymer beads having a particle size of 0.05 to 15 μm, an opaque pigment, and a film-forming polymeric substance.
尚、本発明のカバーシート用塗料には上記成分の他に通
常の塗料に用いられる添加剤を配合することができる。In addition to the above-mentioned components, additives used in ordinary paints can be added to the cover sheet paint of the present invention.
この添加剤としては、例えば、カルピトール類、セロソ
ルブ類などの各種可塑剤や造膜助剤；ヘキサメタリン酸
、トリポリリン酸等の縮合リン酸の塩類、ポリアクリル
酸ナトリウムなどの不透明顔料の分散剤；グリセリン、
エチレングリコールなどの凍結安定化剤；高級アルコー
ル、シリコーンなどの消泡剤；各種増粘剤；各種防腐剤
などが挙げられる。These additives include, for example, various plasticizers and film forming aids such as calpitols and cellosolves; salts of condensed phosphoric acids such as hexametaphosphoric acid and tripolyphosphoric acid; dispersants for opaque pigments such as sodium polyacrylate; and glycerin. ,
Examples include freeze stabilizers such as ethylene glycol; antifoaming agents such as higher alcohols and silicones; various thickeners; and various preservatives.
本発明のカバーシート用塗料は常法、例えば上述の成分
を混合攪拌することによって製造することができる。The coating material for cover sheets of the present invention can be produced by a conventional method, for example, by mixing and stirring the above-mentioned components.
また、本発明のカバーシート用塗料をシートの上にロー
ルコータ−またはエアナイフコーター等の方法によって
塗工することにより、本発明に係るポリマービーズを含
有する隠蔽層を有するカバーシートを作製することがで
きる。ここで用いられるシートとしては、通常カバーシ
ートとして使用されるものであれば特に限定されず、例
えばコート紙、原紙、上質紙、プラスチックフィルム等
が挙げられるが、郵便物等の印刷物に使用する場合には
剥離可能なシートを用いることが好ましい。Furthermore, a cover sheet having a concealing layer containing the polymer beads according to the present invention can be produced by applying the paint for cover sheets according to the present invention onto the sheet using a method such as a roll coater or an air knife coater. can. The sheet used here is not particularly limited as long as it is normally used as a cover sheet, and examples include coated paper, base paper, high-quality paper, plastic film, etc., but when used for printed matter such as mail etc. It is preferable to use a removable sheet.
また、カバーシート用塗料を塗工することによって得ら
れる隠蔽層の厚みは１〜３０μｍが好ましい。Further, the thickness of the concealing layer obtained by applying the cover sheet paint is preferably 1 to 30 μm.
本発明のカバーシート用塗料を用いたカバーシートは、
隠蔽性に優れ、かつ安価に紙片の表面の少なくとも一部
分が見えなくなるように隠蔽することが可能であり、特
に秘密事項を記載した郵便はがき用カバーシートとして
有用である。The cover sheet using the cover sheet paint of the present invention is
It has excellent hiding properties and can hide at least a portion of the surface of a piece of paper from view at a low cost, and is particularly useful as a cover sheet for postcards on which confidential information is written.
次いで実施例を挙げて本発明を説明するが、本発明はこ
れによって何ら限定されるものではない。Next, the present invention will be explained with reference to Examples, but the present invention is not limited thereto.
実施例１〜５．比較例１
下記表−１に示すカバーシート用塗料を調製し、文字が
印刷されたコート紙上にロールコータ−により厚さ１０
μｍに塗工した。それぞれについて隠蔽性を肉眼観察で
評価した結果を表−２に示す。Examples 1-5. Comparative Example 1 A cover sheet paint shown in Table 1 below was prepared, and coated onto coated paper with letters printed on it using a roll coater to a thickness of 10 mm.
Coated to μm. Table 2 shows the results of evaluating the hiding power of each material by visual observation.
尚、評価基準は以下の通りである。The evaluation criteria are as follows.
◎：文字が見えない ○：わずかに文字が見える △：文字が見える 表−２の結果から明らかなように、 本発明のカ バーシート用塗料は隠蔽性に優れている。◎: I can't see the characters ○: Text is slightly visible △: Characters can be seen As is clear from the results in Table 2, The power of the present invention Paints for bar sheets have excellent hiding properties.
以 上Below Up
Claims (1)
することを特徴とするカバーシート用塗料。 ２、ポリマービーズが空孔を有する中空ポリマービーズ
である請求項１記載のカバーシート用塗料。 ３、請求項１または２記載のポリマービーズを含有する
隠蔽層を有することを特徴とするカバーシート。[Scope of Claims] 1. A paint for a cover sheet, characterized by containing polymer beads having a particle size of 0.05 to 15 μm. 2. The paint for a cover sheet according to claim 1, wherein the polymer beads are hollow polymer beads having pores. 3. A cover sheet comprising a concealing layer containing the polymer beads according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2065948A JPH03269065A (en) | 1990-03-16 | 1990-03-16 | Paint for cover sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2065948A JPH03269065A (en) | 1990-03-16 | 1990-03-16 | Paint for cover sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03269065A true JPH03269065A (en) | 1991-11-29 |
Family
ID=13301707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2065948A Pending JPH03269065A (en) | 1990-03-16 | 1990-03-16 | Paint for cover sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03269065A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999054419A1 (en) * | 1998-04-23 | 1999-10-28 | Idemitsu Petrochemical Co., Ltd. | Coating material |
| CN100447211C (en) * | 2004-02-10 | 2008-12-31 | 方学平 | A kind of water-based exterior wall paint |
-
1990
- 1990-03-16 JP JP2065948A patent/JPH03269065A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999054419A1 (en) * | 1998-04-23 | 1999-10-28 | Idemitsu Petrochemical Co., Ltd. | Coating material |
| CN100447211C (en) * | 2004-02-10 | 2008-12-31 | 方学平 | A kind of water-based exterior wall paint |
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