JP3761910B2 - Magnetic pattern formation method - Google Patents
Magnetic pattern formation method Download PDFInfo
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- JP3761910B2 JP3761910B2 JP18987594A JP18987594A JP3761910B2 JP 3761910 B2 JP3761910 B2 JP 3761910B2 JP 18987594 A JP18987594 A JP 18987594A JP 18987594 A JP18987594 A JP 18987594A JP 3761910 B2 JP3761910 B2 JP 3761910B2
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Description
【0001】
【産業上の利用分野】
本発明は、磁性模様形成方法に関する。
【0002】
【従来の技術及びその課題】
従来、磁性模様形成方法として、ある一定の大きさに切断したベースフィルム材の裏面に該ベースフィルム材と同様の大きさの磁石を固定した後、ベースフィルムの上面に磁性材料含有液状塗料を塗布し、次いで乾燥硬化をおこなった後、ベースフィルム材から磁石を取り除く方法が一般的に行なわれている。
【0003】
しかしながら、上記した方法は、長尺物の生産には適していないこと、ベースフィルム材に固定した磁石を取り除くことが面倒であること、塗装、模様形成、及び乾燥硬化を連続的に行なうことが困難であることなどの欠点がある。
【0004】
【課題を解決するための手段】
本発明者等は、上記した問題点を解決するために鋭意研究を重ねた。その結果、特に、移送するベースフィルムの下面方向から無端状のベルト上に固定された磁石をベースフィルムと同一速度で移送させることによって磁性模様を形成させることによって、従来からの欠点を全て解消することを見い出し、本発明を完成するに至った。
【0005】
即ち、本発明は、ロール状に巻き付けられた非磁性体からなるベースフィルムを巻き取りロールによって移送させる経路の途中に
(1)移送するベースフィルムの上面に磁性材料含有液状塗料を塗布する工程、
(2)移送するベースフィルムの下面方向から少なくとも一対の駆動ロールに巻き掛けられた無端状のベルト上に固定され適当な大きさ又は形に切断したマグネットシートを該ベースフィルムと同一速度で移送させることによって磁性模様を形成させる工程、及び
(3)磁性材料含有液状塗料を乾燥又は硬化させる工程を含む
ことを特徴とする磁性模様形成方法に係る。
【0006】
本発明で使用するベースフィルムは、非磁性体からなるベースフィルムである。具体例としては、例えばポリ塩化ビニル、ポリエステル、ポリエチレン、ナイロン、ポリウレタン、ポリイミド、アクリル、スチレン、ABS、フェノール、エポキシ、セルロース、ゴムなどが好適なものとして挙げられる。
【0007】
ベースフィルムは、それ自体着色されていても透明であっても、また、表面が平滑であってもエンボス加工のものであってもかまわない。また、ベースフィルムの膜厚はベースフィルムの下面から磁石を固着させた際に磁性粉に作用をおよぼす膜厚であれば特に制限なしに選択できる。具体的には、約1〜2,000μm 、好ましくは約5〜200μm の範囲が望ましい。
【0008】
ベースフィルムは、図1に示される如くロール(1)状に巻かれており、そしてベースフィルム(2)の先端は駆動ロール(3)に巻き付けられ、ベースフィルム(2)はロール(1)からロール(3)方向に移送される。
ベースフィルム(2)が移送される経路で塗装工程▲1▼、磁性模様形成工程▲2▼、及び硬化工程▲3▼が施される。
【0009】
塗装工程▲1▼で使用する磁性材料含有液状塗料は、磁性材料ビヒクル成分及び溶剤を主成分とし、さらに必要に応じて着色顔料、染料、アルミニウム粉、パール状顔料、雲母などを配合してなる液状組成物を用いて形成される。また、該液状組成物は、添加剤、表面調整剤、体質顔料等が適宜加えられてもよい。
【0010】
磁性材料は、それに磁石を作用させると磁力によって配向(変化)する粉末で、例えばニッケル、鉄含有率の高いステンレス、コバルト、クロム、鉄などの粉末やこれらの金属を被覆又は含有せしめたものが好ましい。その形状は、リン片状、薄板状などいずれでもさしつかえなく、大きさは最大長さが1〜200μm 、好ましくは10〜30μm が好ましい。
【0011】
ビヒクル成分としては、通常の塗料用樹脂が使用でき、例えば常温で乾燥もしくは反応硬化する樹脂、加熱によって硬化もしくは溶融する樹脂、活性エネルギー線照射で硬化する樹脂などがあげられ、具体的にはアルキド樹脂、ポリエステル樹脂、アクリル樹脂、ウレタン樹脂、ビニル樹脂、アミノ樹脂、エポキシ樹脂、フェノール樹脂、シリコン樹脂、フッ素樹脂及びこれらの変性樹脂などが好ましい。
【0012】
また、溶剤としては、有機溶剤及び(又は)水が挙げられる。液状組成物の形態としては有機溶剤型、非水ディスパーション型、水溶液型、エマルジョン型などがあげられる。
【0013】
磁性材料は、ビヒクル成分100重量部(固形分)あたり1〜100重量部、特に10〜50重量部が好ましい。該磁性材料含有液状塗料による着色層の膜厚は2〜100μm 、好ましくは20〜30μm であり、着色層でベースシートを完全に隠ぺいする必要はない。
また、塗料の塗装手段は、例えばナイフコーター、グラビアコーター、ローラー、吹付塗装機、スクリーン印刷機などを用いておこなうことができる。
【0014】
また、磁性材料含有液状塗料の塗装に先立って、ベースフィルムに必要に応じて、着色顔料及びビヒクル成分を主成分とし、かつ磁性材料を含有していない着色プライマーを形成しておくことも可能である。
【0015】
該着色プライマーは現出させる模様を目的とする色調にするために形成するのであって、例えばベースフィルム自体がプラスチックなどのように着色されており、かつその色調が目的と合致すれば、着色プライマーを形成する必要はあえてない。
【0016】
着色プライマーの色調は目的によって任意に選択でき、着色顔料(有機もしくは無機系、メタリック系など)の組成及び比率などによって容易に調整できる。またビヒクル成分は、前記ビヒクル成分と同様のものが使用できる。着色プライマーは膜厚が5〜100μm 、好ましくは15〜25μm が適している。
【0017】
磁性模様形成工程▲2▼は、ベースフィルム(2)の下面方向から少なくとも一対の駆動ロール(6)に巻き掛けられた無端状のベルト(8)に固定された磁石(9)をベースフィルム(2)と同一進行方向で、また、同一速度で移送させることにより塗料(5)中の磁性材料を磁化させ模様を形成させる。該ベースフィルム(2)の速度は、通常、約0.5〜2m/min の範囲である。
図1において、(7)は無端状のベルトに固定された磁石の全体図を示す。
【0018】
無端状のベルトに固定された磁石(7)の、拡大断面図を図2に示した。また、該磁石(7)において、磁石(9)と(9)との隙間に紙などを充填して凹部をなくして表面を平滑にしたものや図3に示す如く磁石(9)の表面にベルト状のシート(10)を設け表面を平滑にしたものも使用できる。
【0019】
無端状のベルト(8)は、駆動ロール(6)によって移送するベルトであって、従来から公知のベルト、例えば、皮、プラスチック、金属などのものが使用できる。
【0020】
磁石(9)としては、特に限定されず従来から公知のものが使用できるが、好ましくはマグネットシートである。該マグネットシートは必要に応じて適当な大きさ又は形に切断したものを使用することができる。マグネットシートの厚さは、通常、約0.1〜2mmの範囲である。
シート(10)は、例えば、前記したベースフィルムと同様のものが使用できる。
【0021】
磁性材料含有液状塗料の硬化▲3▼は、塗料の種類に応じて適宜硬化方法を選択することができる。例えば加熱が必要なものについては、(11)として乾燥機又は活性エネルギー線照射が必要なものについては(11)として活性エネルギー線照射器によって硬化させることができる。
塗料の硬化は、磁性模様が形成された後からベースフィルムが巻き取られる前の間に行なわれる。
【0022】
本発明方法によって得られる磁性模様を有するベースフィルムは、必要に応じて磁性模様の表面にクリヤー膜を有することができる。クリヤー膜は、例えばクリヤー塗料を塗布することにより、又は接着剤(粘着剤も含む)を有するクリヤーフィルムをラミネートすることにより形成できる。クリヤー膜の形成は、例えば前記工程▲3▼と同時もしくは後におこなうか、又はユーザーで使用される前におこなうことができる。
【0023】
本発明方法によって得られた磁性模様を有するベースフィルムは、そのままでも使用することができるが、例えばベースフィルムの裏面に粘着剤層やマグネットシート層を設けることも可能である。
【0024】
【発明の効果】
本発明方法は、▲1▼ベースフィルムがロール状に巻かれた原反のものを使用することができるので生産性が良い、▲2▼無端状のベルト上に固定した磁石をベースフィルムと同一速度で移送させるので輪郭がはっきりとした磁性模様が形成できる、▲3▼磁性模様を形成させると同時に塗料の硬化を連続的におこなうことができる、▲4▼磁石が自動的に脱着されるので手間が掛からない、及び▲5▼塗装、模様形成、硬化が連続的におこなえるので生産効率が良いといった優れた効果を持つものである。
【図面の簡単な説明】
【図1】図1は、本発明方法の概略断面図である。
【図2】図2は、無端状のベルトに固定された磁石の拡大断面図である。
【図3】図3は、無端状のベルトに固定された磁石の表面にベルト状のシートを設けた磁石の拡大断面図である。
【符号の説明】
1 ロール状に巻かれたベースフィルム
2 ベースフィルム
3 駆動ロール
4 磁性材料含有液状塗料
5 塗装された塗料
5´ 磁性材料が変化していない部分
5´ 磁性材料が変化した部分
6 駆動ロール
7 無端状のベルトに固定された磁石
8 無端状のベルト
9 磁石
10 ベルト状のシート
11 硬化装置[0001]
[Industrial application fields]
The present invention relates to a magnetic pattern forming method.
[0002]
[Prior art and problems]
Conventionally, as a magnetic pattern forming method, a magnet having the same size as the base film material is fixed to the back surface of the base film material cut to a certain size, and then a liquid coating containing a magnetic material is applied to the upper surface of the base film. Then, after drying and curing, a method of removing the magnet from the base film material is generally performed.
[0003]
However, the above-described method is not suitable for production of long objects, it is troublesome to remove the magnet fixed to the base film material, and coating, pattern formation, and dry curing can be performed continuously. There are drawbacks such as difficulty.
[0004]
[Means for Solving the Problems]
The inventors of the present invention have made extensive studies in order to solve the above problems. As a result, all the conventional defects are eliminated, in particular, by forming a magnetic pattern by transferring a magnet fixed on an endless belt at the same speed as the base film from the lower surface direction of the transferring base film. As a result, the present invention has been completed.
[0005]
That is, the present invention is in the middle of a path for transferring a base film made of a non-magnetic material wound in a roll shape by a take-up roll.
(1) A step of applying a magnetic material-containing liquid paint on the upper surface of the base film to be transferred,
(2) A magnet sheet fixed on an endless belt wound around at least a pair of drive rolls from the lower surface direction of the base film to be transported and transported at an appropriate size or shape is transported at the same speed as the base film. Forming a magnetic pattern by, and
(3) The present invention relates to a magnetic pattern forming method comprising a step of drying or curing a magnetic material-containing liquid paint.
[0006]
The base film used in the present invention is a base film made of a nonmagnetic material. Specific examples include, for example, polyvinyl chloride, polyester, polyethylene, nylon, polyurethane, polyimide, acrylic, styrene, ABS, phenol, epoxy, cellulose, rubber, and the like.
[0007]
The base film may be colored or transparent per se, or may have a smooth or embossed surface. Further, the thickness of the base film can be selected without particular limitation as long as it is a thickness that acts on the magnetic powder when a magnet is fixed from the lower surface of the base film. Specifically, a range of about 1 to 2,000 μm, preferably about 5 to 200 μm is desirable.
[0008]
The base film is wound into a roll (1) as shown in FIG. 1, and the tip of the base film (2) is wound around a drive roll (3), and the base film (2) is wound from the roll (1). It is transferred in the direction of the roll (3).
A coating process (1), a magnetic pattern forming process (2), and a curing process (3) are performed along a route along which the base film (2) is transferred.
[0009]
The magnetic material-containing liquid paint used in the coating process (1) is mainly composed of a magnetic material vehicle component and a solvent, and further contains coloring pigments, dyes, aluminum powder, pearl pigments, mica and the like as necessary. It is formed using a liquid composition. In addition, additives, surface conditioners, extender pigments and the like may be appropriately added to the liquid composition.
[0010]
A magnetic material is a powder that is oriented (changed) by a magnetic force when a magnet is applied to it. For example, nickel, iron, stainless steel, cobalt, chromium, iron, etc., or a metal coated or contained with these metals. preferable. The shape may be any shape such as a flake shape or a thin plate shape, and the maximum length is 1 to 200 μm, preferably 10 to 30 μm.
[0011]
As the vehicle component, ordinary coating resins can be used, for example, resins that are dried or reactively cured at room temperature, resins that are cured or melted by heating, resins that are cured by irradiation with active energy rays, and the like. A resin, a polyester resin, an acrylic resin, a urethane resin, a vinyl resin, an amino resin, an epoxy resin, a phenol resin, a silicon resin, a fluororesin, and a modified resin thereof are preferable.
[0012]
Moreover, an organic solvent and / or water are mentioned as a solvent. Examples of the form of the liquid composition include an organic solvent type, a non-aqueous dispersion type, an aqueous solution type, and an emulsion type.
[0013]
The magnetic material is preferably 1 to 100 parts by weight, particularly 10 to 50 parts by weight per 100 parts by weight (solid content) of the vehicle component. The thickness of the colored layer made of the magnetic material-containing liquid paint is 2 to 100 μm, preferably 20 to 30 μm, and it is not necessary to completely cover the base sheet with the colored layer.
Moreover, the coating means of a coating material can be performed using a knife coater, a gravure coater, a roller, a spray coating machine, a screen printing machine, etc., for example.
[0014]
In addition, prior to the application of the magnetic material-containing liquid paint, it is also possible to form a colored primer containing a color pigment and a vehicle component as main components and not containing a magnetic material, if necessary, on the base film. is there.
[0015]
The colored primer is formed in order to make the pattern to be displayed have a desired color tone. For example, if the base film itself is colored like plastic and the color tone matches the purpose, the colored primer There is no need to form.
[0016]
The color tone of the colored primer can be arbitrarily selected depending on the purpose, and can be easily adjusted depending on the composition and ratio of the colored pigment (organic or inorganic, metallic, etc.). The same vehicle component as the vehicle component can be used. The colored primer has a thickness of 5 to 100 μm, preferably 15 to 25 μm.
[0017]
In the magnetic pattern forming step (2), a magnet (9) fixed to an endless belt (8) wound around at least a pair of drive rolls (6) from the lower surface direction of the base film (2) is attached to the base film (2). The pattern is formed by magnetizing the magnetic material in the paint (5) by being transferred in the same traveling direction and at the same speed as in 2). The speed of the base film (2) is usually in the range of about 0.5-2 m / min.
In FIG. 1, (7) shows an overall view of a magnet fixed to an endless belt.
[0018]
An enlarged cross-sectional view of the magnet (7) fixed to the endless belt is shown in FIG. Further, in the magnet (7), the gap between the magnets (9) and (9) is filled with paper or the like so that the concave portion is eliminated to make the surface smooth, or the surface of the magnet (9) as shown in FIG. A belt-like sheet (10) provided with a smooth surface can also be used.
[0019]
The endless belt (8) is a belt that is transported by the drive roll (6), and conventionally known belts such as leather, plastic, metal and the like can be used.
[0020]
The magnet (9) is not particularly limited and conventionally known magnets can be used, but a magnet sheet is preferred. The magnet sheet can be cut into an appropriate size or shape as required. The thickness of the magnet sheet is usually in the range of about 0.1 to 2 mm.
As the sheet (10), for example, the same base film as described above can be used.
[0021]
Curing (3) of the magnetic material-containing liquid coating can be appropriately selected according to the type of coating. For example, as for the thing which needs heating, it can be hardened by an active energy ray irradiator as (11) about what needs a dryer or active energy ray irradiation as (11).
The coating is cured after the magnetic pattern is formed and before the base film is wound.
[0022]
The base film having a magnetic pattern obtained by the method of the present invention can have a clear film on the surface of the magnetic pattern, if necessary. The clear film can be formed, for example, by applying a clear paint or by laminating a clear film having an adhesive (including an adhesive). The clear film can be formed, for example, at the same time as or after the step (3) or before being used by the user.
[0023]
Although the base film having a magnetic pattern obtained by the method of the present invention can be used as it is, for example, an adhesive layer or a magnet sheet layer can be provided on the back surface of the base film.
[0024]
【The invention's effect】
The method of the present invention can be used for (1) an original film in which a base film is wound in a roll shape, so that the productivity is good. (2) A magnet fixed on an endless belt is the same as the base film. Because it is moved at a speed, a magnetic pattern with a clear outline can be formed. (3) The magnetic pattern can be formed and the paint can be continuously cured. (4) Since the magnet is automatically detached. It has excellent effects such as less labor and (5) continuous painting, pattern formation, and curing, resulting in good production efficiency.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view of a method of the present invention.
FIG. 2 is an enlarged cross-sectional view of a magnet fixed to an endless belt.
FIG. 3 is an enlarged cross-sectional view of a magnet in which a belt-like sheet is provided on the surface of a magnet fixed to an endless belt.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base film wound in roll shape 2 Base film 3 Drive roll 4 Liquid paint containing
Claims (1)
(1)移送するベースフィルムの上面に磁性材料含有液状塗料を塗布する工程、
(2)移送するベースフィルムの下面方向から少なくとも一対の駆動ロールに巻き掛けられた無端状のベルト上に固定され適当な大きさ又は形に切断したマグネットシートを該ベースフィルムと同一速度で移送させることによって磁性模様を形成させる工程、及び
(3)磁性材料含有液状塗料を乾燥又は硬化させる工程を含む
ことを特徴とする磁性模様形成方法。In the middle of the path where the base film made of non-magnetic material wound in a roll is transported by the take-up roll
(1) A step of applying a magnetic material-containing liquid paint on the upper surface of the base film to be transferred,
(2) A magnet sheet fixed on an endless belt wound around at least a pair of drive rolls from the lower surface direction of the base film to be transported and transported at an appropriate size or shape is transported at the same speed as the base film. Forming a magnetic pattern by, and
(3) A method of forming a magnetic pattern comprising a step of drying or curing a magnetic material-containing liquid coating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18987594A JP3761910B2 (en) | 1994-07-19 | 1994-07-19 | Magnetic pattern formation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18987594A JP3761910B2 (en) | 1994-07-19 | 1994-07-19 | Magnetic pattern formation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0824769A JPH0824769A (en) | 1996-01-30 |
| JP3761910B2 true JP3761910B2 (en) | 2006-03-29 |
Family
ID=16248643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18987594A Expired - Fee Related JP3761910B2 (en) | 1994-07-19 | 1994-07-19 | Magnetic pattern formation method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3761910B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7258900B2 (en) * | 2002-07-15 | 2007-08-21 | Jds Uniphase Corporation | Magnetic planarization of pigment flakes |
| WO2005000585A1 (en) * | 2003-06-30 | 2005-01-06 | Kba-Giori S.A. | Printing machine |
-
1994
- 1994-07-19 JP JP18987594A patent/JP3761910B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0824769A (en) | 1996-01-30 |
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