JPH0331356B2 - - Google Patents
Info
- Publication number
- JPH0331356B2 JPH0331356B2 JP60176970A JP17697085A JPH0331356B2 JP H0331356 B2 JPH0331356 B2 JP H0331356B2 JP 60176970 A JP60176970 A JP 60176970A JP 17697085 A JP17697085 A JP 17697085A JP H0331356 B2 JPH0331356 B2 JP H0331356B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- ohp
- present
- transparency
- ethylene
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/529—Macromolecular coatings characterised by the use of fluorine- or silicon-containing organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
- B41M5/508—Supports
Landscapes
- Overhead Projectors And Projection Screens (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Duplication Or Marking (AREA)
Description
【発明の詳細な説明】
＜産業上の利用分野＞
本発明はオーバーヘツドプロジエクター（以下
OHPと称する）用トランスペアレンシーフイル
ムに関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an overhead projector (hereinafter referred to as
Transparency film for use in OHP (referred to as OHP).
＜従来の技術＞
近年、視聴覚教育方式の導入を契機として
OHPの使用が急増しているが、これに用いられ
るトランスペアレンシーフイルムは、透明フイル
ムを用いて直接印刷あるいはマジツクインキなど
で手書きしたものとか、或は熱線吸収性インキを
用いた原稿から感熱性フイルム上に感熱複写した
ものなどが既に知られている。<Conventional technology> In recent years, with the introduction of audiovisual education methods,
The use of OHP is rapidly increasing, and the transparency films used for this are those that are printed directly on a transparent film or handwritten with magic ink, or are printed on a heat-sensitive film from an original using heat-absorbing ink. There are already known thermal copies.
しかしながら、これら既知のものでは一度間違
つた記載や複写が行われた場合には、書き直しが
出来なく甚だ不経済であつた。 However, with these known methods, once an incorrect entry or copy is made, it cannot be rewritten, which is extremely wasteful.
＜発明が解決しようとする問題点＞
本発明は書き込み、消去が自由に出来、その結
果、恒久的に反復使用することが出来るような、
前記従来品の欠点を排除したOHP用トランスペ
アレンシーフイルムにかかわる。<Problems to be Solved by the Invention> The present invention is capable of writing and erasing freely, and as a result, can be used repeatedly permanently.
The present invention relates to OHP transparency films that eliminate the drawbacks of conventional products.
＜問題点を解決するための手段＞
本発明は透明支持体上に四弗化エチレン・エチ
レン共重合体層等の筆記消去可能な樹脂層を設け
てなるOHP用トランスペアレンシーフイルムで
あり、該四弗化エチレン・エチレン共重合体層等
特定の樹脂層の表面に対して所定の筆記材による
筆記が可能であり、かつ筆記された筆跡が乾式イ
レーザーにより容易に消去できることから恒久性
に筆記材消去ができる本発明のOHP用トランス
ペアレンシーフイルムを得るに至つた。<Means for Solving the Problems> The present invention is an OHP transparency film comprising a writable and erasable resin layer such as a tetrafluoroethylene/ethylene copolymer layer provided on a transparent support. It is possible to write on the surface of a specific resin layer such as a fluorinated ethylene/ethylene copolymer layer using a designated writing material, and the written handwriting can be easily erased with a dry eraser, making it possible to permanently erase the writing material. The transparency film for OHP of the present invention, which can be used in the following manner, has been obtained.
本発明でいう筆記消去可能な樹脂とは、所定の
筆記具、イレーザーにより容易に筆記消去が可能
な弗素系樹脂であり、中でも旭硝子社製の商品名
「アフレツクス」等で上市されている四弗化エチ
レン・エチレン共重合体がその特異な表面物性に
基づき本発明にとくに好適に使用される。 The writable and erasable resin used in the present invention is a fluorine-based resin that can be easily written and erased using a designated writing instrument or eraser, and among them, tetrafluorinated resin, which is marketed under the trade name "Affrex" manufactured by Asahi Glass Co., Ltd. Ethylene-ethylene copolymers are particularly preferably used in the present invention because of their unique surface properties.
本発明のOHP用トランスペアレンシーフイル
ムを製造するには、例えば厚さ50〜250μmのポリ
エチレンテレフタレート、ポリカーボネート、セ
ルローストリアセテート等の透明フイルムからな
る支持体上にドライラミネーシヨンにより四弗化
エチレン・エチレン共重合体フイルムを貼り合わ
せるとか、Ｔダイ押し出し法により透明支持体樹
脂と四弗化エチレン・エチレン樹脂を共押し出し
して積層することによりなされる。 In order to produce the transparency film for OHP of the present invention, for example, a tetrafluoroethylene/ethylene copolymer is coated on a support made of a transparent film such as polyethylene terephthalate, polycarbonate, or cellulose triacetate with a thickness of 50 to 250 μm by dry lamination. This can be done by laminating combined films together or by coextruding a transparent support resin and a tetrafluoroethylene/ethylene resin using a T-die extrusion method and laminating them.
なお、透明支持体を使用することなく、ハンド
リング性に支障のない100〜200μmの厚さを有す
る四弗化エチレン・エチレン共重合体フイルムを
そのままOHP用トランスペアレンシーフイルム
として使用しても本発明と同等の効果を得ること
ができる。 Note that the present invention also applies if a tetrafluoroethylene/ethylene copolymer film having a thickness of 100 to 200 μm that does not impede handling properties is used as a transparency film for OHP without using a transparent support. You can get the same effect.
さらに又、OHP用トランスペアレンシーフイ
ルムに書き込む情報として表や図形等を併用する
場合は、予め該フイルム表面に昇華性染料インキ
を使つて所定の表や図形等を印刷しておくことも
できる。この場合の印刷は昇華性染料インキに使
つて印刷した転写紙の印刷面を該フイルム表面に
密着し加熱により印刷画像を昇華転写すればよ
い。 Furthermore, when tables, figures, etc. are used as information to be written on OHP transparency films, predetermined tables, figures, etc. can be printed on the surface of the film in advance using sublimation dye ink. In this case, printing can be carried out by bringing the printed surface of a transfer paper printed using sublimable dye ink into close contact with the surface of the film, and sublimating and transferring the printed image by heating.
＜実施例＞ 以下実施例をもつて本発明を詳述する。<Example> The present invention will be described in detail below with reference to Examples.
実施例 １
厚さ125μmの透明ポリエチレンテレフタレート
からなる支持体と厚さ21μmの四弗化エチレン・
エチレン共重合体フイルム（アフレツクス、旭硝
子社製）からなる筆記消去可能なフイルムとを下
記配合からなる接着材塗液を使用してドライラミ
ネートにより貼り合わせて本発明のOHP用トラ
ンスペアレンシーフイルムを作製した。Example 1 A support made of transparent polyethylene terephthalate with a thickness of 125 μm and a support made of ethylene tetrafluoride with a thickness of 21 μm.
The OHP transparency film of the present invention was prepared by dry laminating a writable and erasable film made of ethylene copolymer film (Afrex, manufactured by Asahi Glass Co., Ltd.) using an adhesive coating liquid having the following composition. .
ポリエステル系ポリウレタン樹脂（タケラツク
Ａ―540武田薬品社製 固型分60％） 100重量部
イソシアネート系硬化剤（タケネートA50武田
薬品社製 固型分70％） 12重量部
酢酸エチル 50重量部
このフイルムの表面に所定の筆記具にて筆記
し、スーパーフアクスOHP2880（リコー社製）に
て投影したところ、鮮明な投影画像を得ることが
できた。さらにこのフイルム上で筆記、消去を数
10回繰り返したが常に鮮明な投影画像が得られ
た。Polyester polyurethane resin (Takerac A-540 manufactured by Takeda Pharmaceutical Co., Ltd., solid content 60%) 100 parts by weight Isocyanate curing agent (Takenate A50 manufactured by Takeda Pharmaceutical Co., Ltd. solid content 70%) 12 parts by weight Ethyl acetate 50 parts by weight This film When we wrote on the surface with a designated writing instrument and projected it using Superfax OHP2880 (manufactured by Ricoh), we were able to obtain a clear projected image. Furthermore, I wrote and erased several notes on this film.
Although the process was repeated 10 times, a clear projected image was always obtained.
実施例 ２
エチレングリシジルメタアクリレート・酢酸ビ
ニル共重合体（ボンドフアースト、住友化学社
製）、（押し出し温度220〜250℃）を支持体用材料
とし、四弗化エチレン・エチレン共重合体（アフ
ロン、旭硝子社製）（押し出し温度300〜340℃）
を筆記消去可能な樹脂材とし、前者を厚さ180μm
に、後者を厚さ5μmとなるように、Ｔダイを用い
共押し出ししてニツプロールと冷却ロールの間で
圧着冷却することにより、支持体用プラスチツク
フイルムと筆記消去可能なプラスチツクフイルム
とが融着一体化されている本発明のOHP用トラ
ンスペアレンシーフイルムを作製した。Example 2 Ethylene glycidyl methacrylate/vinyl acetate copolymer (Bond First, manufactured by Sumitomo Chemical Co., Ltd.) (extrusion temperature 220 to 250°C) was used as the support material, and tetrafluoroethylene/ethylene copolymer (Aflon) was used as the support material. , manufactured by Asahi Glass Co., Ltd.) (extrusion temperature 300-340℃)
The former is made of writable and erasable resin material, and the former has a thickness of 180 μm.
Then, by co-extruding the latter using a T-die to a thickness of 5 μm and cooling it under pressure between a nip roll and a cooling roll, the plastic film for the support and the erasable plastic film are fused and integrated. A transparency film for OHP according to the present invention was prepared.
このフイルムの表面に実施例１の要領にて筆記
消去の操作を何回も繰り返しながらOHPにて投
影したところ、常に鮮明な投影画像が得られた。 When the surface of this film was projected using an OHP while repeating the writing and erasing operation many times in the same manner as in Example 1, a clear projected image was always obtained.
＜発明の効果＞
本発明は上記の如き構成を有するので、OHP
用トランスペアレンシーフイルムの表面に書き込
み、消去が自由に何回も出来、一枚のフイルムを
恒久的に使用することができるので取扱い上も、
又、経済的にも大きな効果を奏するものである。<Effects of the Invention> Since the present invention has the above configuration, OHP
Writing and erasing can be done on the surface of the transparency film as many times as you like, and a single film can be used permanently, making it easy to handle.
Moreover, it has a great economical effect.
Claims (1)
ン・エチレン共重合体よりなる樹脂層を設けてな
るオーバーヘツドプロジエクター用トランスペア
レンシーフイルム。1. A transparency film for an overhead projector, comprising a transparent support and an erasable resin layer made of tetrafluoroethylene/ethylene copolymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60176970A JPS6237185A (en) | 1985-08-13 | 1985-08-13 | Transparency film for overhead projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60176970A JPS6237185A (en) | 1985-08-13 | 1985-08-13 | Transparency film for overhead projector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6237185A JPS6237185A (en) | 1987-02-18 |
| JPH0331356B2 true JPH0331356B2 (en) | 1991-05-02 |
Family
ID=16022895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60176970A Granted JPS6237185A (en) | 1985-08-13 | 1985-08-13 | Transparency film for overhead projector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6237185A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6480586A (en) * | 1987-09-24 | 1989-03-27 | Hitachi Powdered Metals | Ohp film |
| JPH03197170A (en) * | 1989-12-27 | 1991-08-28 | Tomoegawa Paper Co Ltd | Transparent film for dot impact recording |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53100227A (en) * | 1977-02-14 | 1978-09-01 | Asahi Dow Ltd | Plastic sheet superior for writing |
| JPS57107878A (en) * | 1980-12-25 | 1982-07-05 | Mitsubishi Paper Mills Ltd | Recording paper |
-
1985
- 1985-08-13 JP JP60176970A patent/JPS6237185A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6237185A (en) | 1987-02-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |