JPH08215865A - Fluororesin coated material and its production - Google Patents
Fluororesin coated material and its productionInfo
- Publication number
- JPH08215865A JPH08215865A JP7051940A JP5194095A JPH08215865A JP H08215865 A JPH08215865 A JP H08215865A JP 7051940 A JP7051940 A JP 7051940A JP 5194095 A JP5194095 A JP 5194095A JP H08215865 A JPH08215865 A JP H08215865A
- Authority
- JP
- Japan
- Prior art keywords
- fluororesin
- base material
- coating layer
- fluororesin coating
- absorption
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、弗素樹脂被覆層に模様
を形成した弗素樹脂被覆物及びその製造方法に関し、さ
らに詳しくは、レーザー光の照射により照射部の弗素樹
脂そのものを変色させて模様を形成した弗素樹脂被覆物
及びその製造方法に関する。なお、本発明において、模
様とは、各種紋様のほか、目盛り、文字、図形、装飾模
様、これらの組み合わせ等を総称するものとする。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluororesin coating having a pattern formed on a fluororesin coating layer and a method for producing the same. More specifically, the fluororesin itself in the irradiated portion is discolored by irradiation with a laser beam to form a pattern. And a method for producing the same. In the present invention, the term "pattern" is used to collectively refer to various patterns, scales, characters, figures, decorative patterns, combinations thereof, and the like.
【０００２】[0002]
【従来の技術】弗素樹脂被覆物は、例えば、炊飯器の内
釜、鍋、フライパンなど広範な用途に使用されている
が、用途によっては、目盛りや文字、装飾模様などを形
成することが要求されている。例えば、炊飯器の内釜に
は、通常、水位線などの目盛りや文字が表示されてい
る。従来、弗素樹脂被覆物に、目盛りや文字等を表示す
る方法として、（１）弗素樹脂被覆物に、目盛りや文字
等の形をした金型を用いて、プレス加工により物理的に
凹凸を設ける方法、（２）予め物理的に凹凸を設けた基
材に、弗素樹脂被覆を行う方法、（３）物理的に設けた
凹部に、被覆弗素樹脂とは異なる色の弗素樹脂を埋め込
む方法、（４）凹凸のない平坦な弗素樹脂被覆層上に、
異なる色の弗素樹脂をコーティングして装飾や目盛り、
文字等を形成する方法（特開昭６１−１８１５７３号公
報、特公平５−７２８０７号公報など）、（５）酸化チ
タンなどの酸化数が変わることによって色調が変化する
金属酸化物または金属水酸化物を含有させた弗素樹脂被
覆物に、目盛りや文字等の形状の穴を形成したマスクを
介してエキシマレーザーを照射し、照射部の色を変化さ
せてマーキングを行う方法（特開平６−１００７１６号
公報）などが提案されている。2. Description of the Related Art Fluororesin coatings are used in a wide variety of applications such as rice cooker inner pots, pans, and frying pans. Depending on the application, it may be necessary to form scales, letters, decorative patterns, etc. Has been done. For example, the inner pot of a rice cooker usually displays scales and characters such as a water level line. Conventionally, as a method of displaying a scale, characters, etc. on a fluororesin coating, (1) a mold having a shape of the scale, characters, etc. is used on the fluororesin coating to physically form irregularities by pressing. A method, (2) a method of coating a fluororesin on a base material on which irregularities are physically provided in advance, (3) a method of embedding a fluororesin of a color different from that of the coated fluororesin into a recess provided physically ( 4) On a flat fluororesin coating layer without unevenness,
Fluorine resin of different colors are coated to decorate and scale,
A method for forming characters and the like (Japanese Patent Application Laid-Open No. 61-181573, Japanese Patent Publication No. 5-72807, etc.), (5) Metal oxide or metal hydroxide whose color tone is changed by changing the oxidation number of titanium oxide or the like. A method of irradiating a fluororesin coating containing an object with an excimer laser through a mask in which holes having shapes such as graduations and letters are formed to change the color of the irradiated portion for marking (JP-A-6-100716). No. gazette) is proposed.
【０００３】しかしながら、上記（１）及び（２）の方
法は、目盛りや文字等の表示が凹凸による陰影だけであ
るため、表示自体が見にくく、しかも、凹部が汚れ易
く、炊飯ジャー等では清掃が不便である。また、上記
（１）の方法では、プレス加工による凹凸部の作製時
に、該凹凸部の弗素樹脂被覆層部分が非常に大きな曲率
で変形するため、弗素樹脂被膜が延伸され、基材との界
面剥離や被膜のピンホール、クラック等が発生し易いと
いう問題がある。上記（３）の方法は、色の異なる弗素
樹脂を凹部に埋め込むため、工程が繁雑で工業的に有利
な方法ではなく、さらに、形成された表示が汚れたり、
黄ばみが生じ易いという問題がある。However, in the above methods (1) and (2), since the display of the scales and characters is only shaded by unevenness, the display itself is hard to see, and the recess is easily soiled, so that it can be cleaned with a rice cooker or the like. It's inconvenient. Further, in the above method (1), when the uneven portion is formed by pressing, the fluorine resin coating layer portion of the uneven portion is deformed with a very large curvature, so that the fluororesin coating film is stretched and the interface with the substrate is increased. There is a problem that peeling and pinholes and cracks in the coating are likely to occur. The above method (3) is not an industrially advantageous method because it involves complicated steps because it fills the recesses with fluororesin of different colors.
There is a problem that yellowing is likely to occur.
【０００４】上記（４）の方法は、コーティングにより
形成された目盛りや文字等の模様が最外層にあるため、
模様が摩耗により消滅し易いという問題がある。目盛り
や文字等の模様の上に弗素樹脂の保護層を設けても、段
差が生じるため、やはり模様が摩滅し易い。この（４）
の方法では、そもそも弗素樹脂被覆層と強く接着し、か
つ、コーティングの際に滲んだりかすれたりすることの
ない弗素樹脂塗料の調製や入手が困難である。さらに、
この（４）の方法は、複雑な形状に成型された弗素樹脂
被覆物に対して適用することが事実上できない。そこ
で、（４）の方法では、通常、平板上の弗素樹脂被覆物
に、異なる色の弗素樹脂をコーティングして模様を形成
してからプレス加工しているが、プレス加工の精度が充
分でない場合には、目盛りや文字等の模様が変形する。In the above method (4), since the patterns such as scales and letters formed by coating are on the outermost layer,
There is a problem that patterns tend to disappear due to wear. Even if a protective layer of fluororesin is provided on the pattern such as scales and letters, a step is formed, and the pattern is easily worn away. This (4)
According to the method (1), it is difficult to prepare and obtain a fluororesin coating material that strongly adheres to the fluororesin coating layer and does not bleed or fade during coating. further,
The method (4) is practically not applicable to a fluororesin coating molded in a complicated shape. Therefore, in the method of (4), the fluororesin coating on the flat plate is usually coated with fluororesin of a different color to form a pattern, and then the press working is carried out. The patterns such as scales and letters are deformed.
【０００５】上記（５）の方法は、弗素樹脂被覆層上の
目盛りや文字等の表示面に凹凸ができないため、摩耗や
汚れの問題がなく、色の差も見やすいが、弗素樹脂中に
酸化チタン等を多量に混合する必要があるため、弗素樹
脂が本来有している非粘着性が低下するおそれがある。
そこで、上記（５）の方法では、非粘着性を確保するた
め、エキシマレーザー光を照射してマーキングした後、
さらに、その上に実質的に弗素樹脂だけからなる層を被
覆しているが、このような方法は、酸化チタン等の使用
による原料コスト高に加えて、付加的な工程によるコス
トアップが避けられない。In the above method (5), since there is no unevenness on the display surface such as scales or characters on the fluororesin coating layer, there is no problem of abrasion or dirt and the difference in color is easy to see, but the fluororesin is oxidized. Since it is necessary to mix a large amount of titanium or the like, the non-adhesiveness inherent in the fluororesin may be reduced.
Therefore, in the above method (5), in order to ensure non-adhesiveness, after irradiating with excimer laser light for marking,
Furthermore, a layer consisting essentially of a fluororesin is coated on it, but such a method avoids the cost increase due to an additional process in addition to the high raw material cost due to the use of titanium oxide or the like. Absent.
【０００６】[0006]
【発明が解決しようとする課題】本発明の目的は、弗素
樹脂被覆物に、物理的な凹凸やコーティング部による凹
凸などを形成したり、あるいは弗素樹脂被覆層の非粘着
性や基材に対する接着性を低下させることなく、鮮明な
模様（目盛り、文字、図形、装飾模様、これらの組み合
わせ等）を形成した弗素樹脂被覆物、及びその製造方法
を提供することにある。本発明者らは、前記従来技術の
問題点を克服するために鋭意研究した結果、金属または
セラミックスからなる基材上に弗素樹脂被覆層が形成さ
れた弗素樹脂被覆物に、弗素樹脂には殆ど吸収がなく、
基材には吸収がある波長のレーザー光を照射すると、照
射部の弗素樹脂自体が無色から黒色に変化し、無色−黒
のコントラストが鮮やかな模様を形成することを見いだ
した。DISCLOSURE OF THE INVENTION An object of the present invention is to form physical irregularities or irregularities due to a coating portion on a fluororesin coating, or non-adhesiveness of a fluororesin coating layer or adhesion to a substrate. It is an object of the present invention to provide a fluororesin coating in which a clear pattern (scales, letters, figures, decorative patterns, a combination thereof, etc.) is formed without deteriorating the property, and a method for producing the same. As a result of intensive studies to overcome the above-mentioned problems of the prior art, the inventors of the present invention have found that fluororesin coatings in which a fluororesin coating layer is formed on a base material made of metal or ceramics can be used in most cases. There is no absorption,
It has been found that when the substrate is irradiated with a laser beam having a wavelength having absorption, the fluororesin itself in the irradiated part changes from colorless to black, and a colorless-black contrast forms a vivid pattern.
【０００７】したがって、弗素樹脂被覆物の弗素樹脂被
覆層上に、目盛りや文字等の所定の形状の穴を形成した
マスクを介して、ＹＡＧレーザーなどの特定波長のレー
ザー光を照射すると、穴の形状に照射された照射部の弗
素樹脂のみが変色し、所望の模様が形成される。マスク
を用いずに、レーザー光を所定の形状にスキャンしても
よい。本発明の方法により形成された模様は、鮮明で見
やすいことに加えて、弗素樹脂被覆層の平坦性を損なう
ことがないため、耐摩耗性や耐汚染性に優れており、し
かも、弗素樹脂が本来有している非粘着性を損なうこと
がない。本発明は、これらの知見に基づいて完成するに
至ったものである。Therefore, when a laser beam of a specific wavelength such as a YAG laser is irradiated through a mask in which holes having a predetermined shape such as scales and letters are formed on the fluorine resin coating layer of the fluorine resin coating, Only the fluororesin in the irradiation portion irradiated with the shape changes color, and a desired pattern is formed. Laser light may be scanned into a predetermined shape without using a mask. The pattern formed by the method of the present invention is clear and easy to see, and since it does not impair the flatness of the fluororesin coating layer, it is excellent in abrasion resistance and stain resistance, and the fluororesin is It does not impair the inherent non-adhesiveness. The present invention has been completed based on these findings.
【０００８】[0008]
【課題を解決するための手段】かくして、本発明によれ
ば、金属またはセラミックスからなる基材上に弗素樹脂
被覆層が形成された弗素樹脂被覆物において、弗素樹脂
被覆層表面に、弗素樹脂には殆ど吸収がなく、基材には
吸収がある波長のレーザー光の照射により、照射部の弗
素樹脂を変色させた模様が形成されていることを特徴と
する弗素樹脂被覆物が提供される。また、本発明によれ
ば、金属またはセラミックスからなる基材上に弗素樹脂
被覆層が形成された弗素樹脂被覆物に、弗素樹脂には殆
ど吸収がなく、基材には吸収がある波長のレーザー光を
照射して、照射部の弗素樹脂を変色させて模様を形成す
ることを特徴とする弗素樹脂被覆物の製造方法が提供さ
れる。Thus, according to the present invention, in a fluororesin coating in which a fluororesin coating layer is formed on a base material made of metal or ceramics, a fluororesin coating layer is formed on the surface of the fluororesin coating layer. There is almost no absorption and the base material is provided with a fluororesin coating characterized in that a pattern in which the fluororesin in the irradiated portion is discolored is formed by irradiation with a laser beam having a wavelength having absorption. Further, according to the present invention, a fluororesin coating having a fluororesin coating layer formed on a base material made of metal or ceramics has a wavelength which is almost not absorbed by the fluororesin and which is absorbed by the base material. There is provided a method for producing a fluororesin coating, which comprises irradiating light to change the color of the fluororesin on the irradiated portion to form a pattern.
【０００９】以下、本発明について詳述する。本発明で
は、従来公知の弗素樹脂被覆物を使用することができ
る。弗素樹脂被覆物は、深鍋等の所定形状に成形加工さ
れたものであっても、あるいは、プレス加工される前の
円板状などであってもよい。基材の材質としては、アル
ミニウム、ステンレス等の金属、及びセラミックス類が
用いられる。アルミニウム基材としては、アルミニウム
板の表面を電気的にエッチングして微細な凹凸を設けた
ものが好ましい。エッチングにより、基材と弗素樹脂と
が物理的に強力に接着する。エッチングに替えて、ある
いはエッチングと共に、アルミニウム基材にプライマー
処理を行ってもよい。ステンレス基材は、通常、プライ
マーを用いて弗素樹脂を接着させる方法が好ましい。勿
論、アルミニウム基材と同様に、ステンレス基材の表面
をエッチングしてもよい。セラミックス基材の場合に
は、通常、プライマー処理を行う。The present invention will be described in detail below. In the present invention, a conventionally known fluororesin coating can be used. The fluororesin coating may be formed into a predetermined shape such as a pot, or may be in a disc shape before being pressed. As the material of the base material, metals such as aluminum and stainless steel, and ceramics are used. As the aluminum base material, it is preferable that the surface of the aluminum plate is electrically etched to provide fine irregularities. By the etching, the base material and the fluororesin are physically and strongly adhered to each other. Instead of etching, or together with etching, the aluminum substrate may be subjected to a primer treatment. For the stainless steel substrate, it is usually preferable to use a primer to bond the fluororesin. Of course, the surface of the stainless steel base material may be etched in the same manner as the aluminum base material. In the case of a ceramic base material, a primer treatment is usually performed.
【００１０】弗素樹脂被服層を形成するための弗素樹脂
としては、例えば、ポリテトラフルオロエチレン（ＰＴ
ＦＥ）、テトラフルオロエチレン／パーフルオロアルキ
ルビニルエーテル共重合体（ＰＦＡ）、テトラフルオロ
エチレン／ヘキサフルオロプロピレン共重合体（ＦＥ
Ｐ）、テトラフルオロエチレン／エチレン共重合体（Ｅ
ＴＦＥ）、ポリクロロトリフルオロエチレン（ＣＴＦ
Ｅ）、及びこれらの２種以上の混合物等が挙げられる。
弗素樹脂被覆層は、常法により、弗素樹脂塗料を基材面
上にコーティングし、乾燥後、燒結することにより形成
することができる。例えば、炊飯器内釜を作成するに
は、一般に、アルミニウムやステンレス等の金属円板の
表面をブラスト、電解エッチング、化学エッチング等に
より粗面化処理し、あるいはプライマー塗装処理をした
後、弗素樹脂塗料をコーティングし、乾燥後、燒結して
弗素樹脂被覆金属円板を作成し、次いで、これを容器の
形状にプレス加工する。The fluororesin for forming the fluororesin coating layer is, for example, polytetrafluoroethylene (PT).
FE), tetrafluoroethylene / perfluoroalkyl vinyl ether copolymer (PFA), tetrafluoroethylene / hexafluoropropylene copolymer (FE
P), tetrafluoroethylene / ethylene copolymer (E
TFE), polychlorotrifluoroethylene (CTF)
E), and mixtures of two or more of these.
The fluororesin coating layer can be formed by coating a fluororesin coating material on the surface of the substrate by a conventional method, drying and sintering. For example, in order to create a rice cooker inner pot, generally, the surface of a metal disk such as aluminum or stainless steel is roughened by blasting, electrolytic etching, chemical etching, or the like, or after a primer coating treatment, a fluororesin is used. After being coated with a paint, dried and sintered to form a fluororesin-coated metal disk, which is then pressed into the shape of a container.
【００１１】本発明では、弗素樹脂被覆物の該弗素樹脂
被覆面に、弗素樹脂には殆ど吸収がなく、基材には吸収
がある波長のレーザー光を照射して、照射部の弗素樹脂
自体を変色させて模様を形成する点に特徴を有する。前
記の特開平６−１００７１６号公報に開示されている方
法では、エキシマレーザー光の照射により変色する酸化
チタンなどの金属酸化物または金属水酸化物を弗素樹脂
中に配合しているが、本発明の方法では、このような色
が変化する材料を配合する必要はない。According to the present invention, the fluororesin-coated surface of the fluororesin-coated article is irradiated with a laser beam having a wavelength at which the fluororesin has almost no absorption and the base material has the absorption so that the fluororesin itself in the irradiation portion is exposed. The feature is that a color is changed to form a pattern. In the method disclosed in the above-mentioned JP-A-6-100716, a metal oxide or metal hydroxide such as titanium oxide that changes color upon irradiation with excimer laser light is compounded in a fluororesin. In this method, it is not necessary to mix such a color-changing material.
【００１２】弗素樹脂には殆ど吸収がなく、金属やセラ
ミックスなどの基材には吸収がある波長のレーザー光と
しては、例えば、波長１．０６μｍで発振するＮｄ3+、
ＹＡＧレーザー等が挙げられる。また、レーザー光の中
でも、パルス発振光は、連続発振光に比べて、基材表面
やレーザー光照射部近傍にのみにエネルギーを与えるこ
とから、基材の温度上昇や、非照射部と照射部との境界
のぼやけ等が抑制できるので、本発明のマーキングに用
いるレーザー光として好適である。As a laser beam having a wavelength which is hardly absorbed by a fluororesin and is absorbed by a base material such as metal or ceramics, for example, Nd 3+ which oscillates at a wavelength of 1.06 μm,
A YAG laser etc. are mentioned. In addition, among laser light, pulsed light gives energy only to the surface of the base material and the vicinity of the laser light irradiation part, as compared with continuous wave light, so that the temperature rise of the base material and the non-irradiation part and irradiation part It is suitable as a laser beam used for the marking of the present invention because it can suppress the blurring of the boundary between the and the like.
【００１３】このような特定波長のレーザー光を照射す
ると、弗素樹脂被覆層の照射部のみが無色から黒色に変
化し、その無色と黒のコントラストは鮮明である。レー
ザー光の照射により、目盛りや文字等の模様を形成する
には、例えば、レーザー光を通さない銅箔に所望の目盛
りや文字等の模様の形に穴を形成したものをマスクとし
て用い、該マスクを弗素樹脂被覆層の表面に置いて、そ
の上からレーザー光を照射する方法、あるいは、レーザ
ー光を目盛りや文字等の形にスキャンして照射する方法
などがある。レーザー光の照射エネルギーや照射時間等
の条件は、弗素樹脂被覆層が劣化しない範囲内におい
て、弗素樹脂の種類や所望のコントラストの強さ等に応
じて、適宜実験的に定めることができる。弗素樹脂被覆
層の照射部が変色する理由としては、弗素樹脂被覆層を
通過したレーザー光が基材に吸収され、積層界面が高温
となるため、その部分の弗素樹脂から弗素原子が脱離し
て炭化が進み、黒色化するためであると推定される。When a laser beam of such a specific wavelength is irradiated, only the irradiated portion of the fluororesin coating layer changes from colorless to black, and the contrast between colorless and black is clear. To form a pattern such as a scale or letters by irradiating with a laser beam, for example, a copper foil that does not pass laser light is used as a mask in which holes are formed in a desired pattern of a scale or a letter or the like. There is a method in which a mask is placed on the surface of the fluororesin coating layer and a laser beam is irradiated from above, or a method in which the laser beam is scanned and irradiated in the form of a scale or a character. The conditions such as the irradiation energy of the laser light and the irradiation time can be appropriately experimentally determined according to the kind of the fluororesin and the desired contrast strength, etc., within the range where the fluororesin coating layer is not deteriorated. The reason why the irradiated portion of the fluororesin coating layer is discolored is that the laser light that has passed through the fluororesin coating layer is absorbed by the base material and the lamination interface becomes hot, so that fluorine atoms are desorbed from the fluororesin in that portion. It is presumed that this is because carbonization proceeds and blackening occurs.
【００１４】本発明の方法は、弗素樹脂自体の色の変化
を利用するため、目盛りや文字等の模様を形成するのに
物理的な凹凸やコーティング部による凹凸を形成する必
要がない。したがって、模様が形成された部分とそれ以
外の部分とで凹凸の差が出ないため、使用中に模様が摩
滅したり、汚れの原因になることはない。また、レーザ
ー光の照射による弗素樹脂の色の変化が、無色から黒へ
という色彩の大きく異なる変化であるため、形成された
模様が鮮明で見やすいという特徴がある。Since the method of the present invention utilizes the change in color of the fluororesin itself, it is not necessary to form physical irregularities or irregularities due to the coating portion to form patterns such as scales and letters. Therefore, since there is no difference in the unevenness between the portion where the pattern is formed and the other portion, the pattern is not worn or dirty during use. Further, since the color change of the fluororesin due to the irradiation of the laser beam is a color change from colorless to black, which is greatly different, the formed pattern is clear and easy to see.
【００１５】さらに、本発明の方法によれば、レーザー
光が照射された弗素樹脂の部分が変色するだけで、非粘
着性などの弗素樹脂本来の特性が保持されるため、形成
された模様の上にさらに非粘着性の被覆層を設ける必要
がない。基材と弗素樹脂被覆層との間の接着力も、レー
ザー光照射前の水準が保持されている。本発明の方法
は、円板等の平板状の弗素樹脂被覆物に適用することが
できるだけではなく、鍋等の容器状の形状に成形した弗
素樹脂被覆物に対しても適用することができる。本発明
の方法を容器状の形状に成形した弗素樹脂被覆物に適用
すれば、プレス成形に伴う目盛りや文字等の表示の変形
を避けることができる。Further, according to the method of the present invention, only the portion of the fluororesin irradiated with laser light is discolored, and the original properties of the fluororesin such as non-adhesiveness are maintained, so that the formed pattern It is not necessary to provide a further non-stick coating layer on top. The adhesive force between the base material and the fluororesin coating layer is maintained at the level before laser light irradiation. The method of the present invention can be applied not only to a flat plate-shaped fluororesin coating such as a disk, but also to a fluororesin coating formed into a container-like shape such as a pot. If the method of the present invention is applied to a fluororesin coating formed in a container shape, it is possible to avoid the deformation of the display such as scales and characters associated with press molding.
【００１６】[0016]
【実施例】以下に実施例を挙げて、本発明についてより
具体的に説明するが、本発明は、これらの実施例のみに
限定されるものではない。被覆物の性能評価方法は、以
下のとおりである。 （１）剥離強度 市販のＦＥＰシートを弗素樹脂被覆面に熱融着した後、
１ｃｍの幅で１８０°方向に剥離し、その時の引き剥し
力を剥離強度（単位：ｋｇ／ｃｍ）とした。 （２）碁盤目試験 弗素樹脂被覆面にＪＩＳ Ｋ５４００−１９９０，８，
５．２に規定された碁盤目１００マスを作成し、この面
にセロテープ〔ニチバン（株）製〕を充分に密着させ、
直ちに引き剥す。新しいセロテープを用いて、この操作
を４０回行い、１００マス中何マスが残存したかを評価
した（単位：％）。 （３）対水接触角 協和界面科学（株）製の接触角計（ＣＡ−Ａ）を用い、
液適法にて水との接触角（単位：度）を測定した。 ＜性能評価の標準値＞市販の炊飯ジャー内釜に被覆され
ている弗素樹脂被覆層は、剥離強度が１．５ｋｇ／ｃｍ
以上で、碁盤目試験が１００％であれば、充分に実用に
耐える接着力を有すると評価される。また、対水接触角
は、１０５°以上あれば、炊飯ジャー内釜としての非粘
着性は充分であると評価される。The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples. The method of evaluating the performance of the coating is as follows. (1) Peel strength After heat-sealing a commercially available FEP sheet on the fluororesin-coated surface,
It was peeled in a direction of 180 ° with a width of 1 cm, and the peeling force at that time was defined as peel strength (unit: kg / cm). (2) Cross-cut test JIS K5400-1990, 8,
Create a grid of 100 squares specified in 5.2, and make a cellotape (Nichiban Co., Ltd.) sufficiently adhere to this surface,
Peel off immediately. This operation was performed 40 times using a new cellotape, and it was evaluated how many squares remained in 100 squares (unit:%). (3) Water contact angle Using a contact angle meter (CA-A) manufactured by Kyowa Interface Science Co., Ltd.,
The contact angle with water (unit: degree) was measured by a liquid method. <Standard value of performance evaluation> The peel strength of the fluororesin coating layer coated on the commercial rice cooker inner pot is 1.5 kg / cm.
As described above, when the cross-cut test is 100%, it is evaluated that the adhesive strength is sufficient for practical use. Further, if the contact angle with water is 105 ° or more, it is evaluated that the non-adhesiveness of the rice cooker inner pot is sufficient.
【００１７】［実施例１］基材として、板圧１．２ｍｍ
のアルミニウム合金板〔神戸製鋼（株）製ＡＳＢ材〕を
用いた。まず、このアルミニウム合金板を陽極として、
塩化アンモニウム水溶液中、２５クーロン／ｃｍ2の電
気量で電気化学的エッチング処理を行い、アルミニウム
合金板の表面に微細な凹凸を形成させた。アルミニウム
合金板のエッチング処理面に、ダイキン工業（株）製の
弗素樹脂塗料（ポリフロンＤ１−Ｆ：ＰＦＡ）をコーテ
ィングし、１５０℃で１０分間加熱して乾燥させた後、
４２０℃で２０分間燒結した。得られた膜の特性を下記
に示す。 膜厚 ：２０μｍ 剥離強度 ：２．１ｋｇ／ｃｍ 碁盤目試験 ：１００％残存 対水接触角 ：１１６°[Example 1] As a base material, a plate pressure of 1.2 mm
The aluminum alloy plate [ASB material manufactured by Kobe Steel, Ltd.] was used. First, using this aluminum alloy plate as the anode,
Electrochemical etching treatment was carried out in an aqueous solution of ammonium chloride with an electric quantity of 25 coulomb / cm 2 to form fine irregularities on the surface of the aluminum alloy plate. The etching treated surface of the aluminum alloy plate was coated with a fluororesin paint (Polyflon D1-F: PFA) manufactured by Daikin Industries, Ltd. and dried by heating at 150 ° C. for 10 minutes,
Sintered at 420 ° C. for 20 minutes. The characteristics of the obtained film are shown below. Film thickness: 20 μm Peel strength: 2.1 kg / cm Cross-cut test: 100% residual water contact angle: 116 °
【００１８】次に、図１に示す穴２を設けた銅箔製マス
ク１を弗素樹脂被覆物３の表面に密着させ、下記の条件
でＹＡＧレーザー光を照射した。 波長・・・・・・・・１．０６μｍ パルス幅・・・・・・２０ｐｓ パルスエネルギー・・２５ｍＪ／パルス 周波数・・・・・・・１０Ｈｚ ビーム径・・・・・・６ｍｍ 照射時間・・・・・・１００秒間Next, the copper foil mask 1 having the holes 2 shown in FIG. 1 was brought into close contact with the surface of the fluororesin coating 3 and irradiated with YAG laser light under the following conditions. Wavelength: 1.06 μm Pulse width: 20 ps Pulse energy: 25 mJ / pulse frequency: 10 Hz Beam diameter: 6 mm Irradiation time: .... 100 seconds
【００１９】照射後に銅箔製マスク１を取り去ると、図
２に示すように、該マスクの穴２に対応する弗素樹脂被
覆物３の面４が照射により黒色化していた。ＹＡＧレー
ザー照射部の特性は、下記の通りであった。 膜厚 ：２０μｍ 剥離強度 ：２．１ｋｇ／ｃｍ 碁盤目試験 ：１００％残存 対水接触角 ：１１５° 非照射部の色：白色 照射部の色 ：黒色 上記の結果から、基材に対する弗素樹脂被覆物の接着性
や対水接触角などの特性を損なうことなく、模様を形成
できることが分かる。When the copper foil mask 1 was removed after the irradiation, as shown in FIG. 2, the surface 4 of the fluororesin coating 3 corresponding to the hole 2 of the mask was blackened by the irradiation. The characteristics of the YAG laser irradiation part were as follows. Film thickness: 20 μm Peel strength: 2.1 kg / cm Cross-cut test: 100% residual water contact angle: 115 ° Color of non-irradiated part: White Color of irradiated part: Black From the above results, the fluororesin coating on the substrate It can be seen that the pattern can be formed without impairing the properties such as the adhesiveness of the object and the contact angle with water.
【００２０】[0020]
【発明の効果】本発明の製造方法によれば、弗素樹脂被
覆物（平板状または容器状）に、凹凸を形成したり、弗
素樹脂被覆層の非粘着性や基材に対する接着性を低下さ
せたりすることなく、鮮明な模様（目盛り、文字、図
形、装飾模様、これらの組み合わせ等）を形成すること
ができる。したがって、本発明の製造方法は、炊飯ジャ
ー内壁に水位目盛りを形成したり、あるいは鍋やフライ
パン等に目盛り、図形、文字などを形成するのに適用す
ることができる。そして、本発明の弗素樹脂被覆物は、
目盛りや文字、装飾模様等が形成された炊飯器内釜、
鍋、フライパンなどの分野に有用である。EFFECTS OF THE INVENTION According to the production method of the present invention, unevenness is formed in the fluororesin coating (plate-like or container-like), and the non-adhesiveness of the fluororesin coating layer and the adhesion to the substrate are reduced. It is possible to form a clear pattern (scales, characters, figures, decorative patterns, a combination of these, etc.) without causing any trouble. Therefore, the manufacturing method of the present invention can be applied to form a water level scale on the inner wall of a rice cooker or to form scales, figures, characters, etc. on a pot or frying pan. The fluororesin coating of the present invention is
Rice cooker inner pot with scales, letters, decorative patterns, etc.,
It is useful in fields such as pots and pans.
【図１】本発明の実施例で使用した銅箔製マスクの平面
図である。FIG. 1 is a plan view of a copper foil mask used in an example of the present invention.
【図２】本発明の実施例により得られた模様が形成され
た弗素樹脂被覆物の平面図である。FIG. 2 is a plan view of a fluororesin-coated article having a pattern formed according to an embodiment of the present invention.
１ 銅箔製マスク ２ 穴 ３ 弗素樹脂被覆物 ４ 黒色化した部分 1 Copper foil mask 2 Hole 3 Fluororesin coating 4 Blackened part
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ３２Ｂ 27/30 Ｂ３２Ｂ 27/30 Ｄ 33/00 33/00 Ｂ４１Ｍ 5/26 7416−2Ｈ Ｂ４１Ｍ 5/26 Ｖ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location B32B 27/30 B32B 27/30 D 33/00 33/00 B41M 5/26 7416-2H B41M 5 / 26 V
Claims (4)
に弗素樹脂被覆層が形成された弗素樹脂被覆物におい
て、弗素樹脂被覆層表面に、弗素樹脂には殆ど吸収がな
く、基材には吸収がある波長のレーザー光の照射によ
り、照射部の弗素樹脂を変色させた模様が形成されてい
ることを特徴とする弗素樹脂被覆物。1. A fluororesin coating having a fluororesin coating layer formed on a base material made of metal or ceramics, wherein the fluororesin coating layer surface has almost no absorption by the fluororesin, and the base material has no absorption. A fluororesin-coated article, characterized in that a pattern in which the fluororesin in the irradiated portion is discolored is formed by irradiation with a laser beam of a certain wavelength.
１記載の弗素樹脂被覆物。2. The fluororesin coating according to claim 1, wherein the laser light is pulsed light.
に弗素樹脂被覆層が形成された弗素樹脂被覆物に、弗素
樹脂には殆ど吸収がなく、基材には吸収がある波長のレ
ーザー光を照射して、照射部の弗素樹脂を変色させて模
様を形成することを特徴とする弗素樹脂被覆物の製造方
法。3. A fluororesin coating having a fluororesin coating layer formed on a base material made of metal or ceramics is irradiated with a laser beam having a wavelength having almost no absorption by the fluororesin and absorption by the base material. Then, the method for producing a fluororesin coating is characterized by changing the color of the fluororesin in the irradiated portion to form a pattern.
３記載の弗素樹脂被覆物の製造方法。4. The method for producing a fluororesin coating according to claim 3, wherein the laser light is pulsed light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7051940A JPH08215865A (en) | 1995-02-16 | 1995-02-16 | Fluororesin coated material and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7051940A JPH08215865A (en) | 1995-02-16 | 1995-02-16 | Fluororesin coated material and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08215865A true JPH08215865A (en) | 1996-08-27 |
Family
ID=12900873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7051940A Pending JPH08215865A (en) | 1995-02-16 | 1995-02-16 | Fluororesin coated material and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08215865A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004030920A1 (en) * | 2002-10-01 | 2004-04-15 | Nok Corporation | Marking method and marked molding |
| WO2010036503A2 (en) * | 2008-09-26 | 2010-04-01 | Electro Scientific Industries, Inc. | Method of laser micro-machining stainless steel with high cosmetic quality |
| JP2010184487A (en) * | 2009-02-13 | 2010-08-26 | Inoac Corp | Method of manufacturing member with stitch pattern |
| JP2012088074A (en) * | 2010-10-15 | 2012-05-10 | Ritsumeikan | Tool having water-repellent layer and method of manufacturing the tool |
| US8524127B2 (en) | 2010-03-26 | 2013-09-03 | Electro Scientific Industries, Inc. | Method of manufacturing a panel with occluded microholes |
| KR101373677B1 (en) * | 2013-07-18 | 2014-03-14 | 윤석헌 | Method for processing metal material using film and metallic interior and exterior panel products made therefrom |
| WO2017211888A1 (en) * | 2016-06-08 | 2017-12-14 | Weilburger Coatings Gmbh | Aqueous composition for producing a laser-markable coating, and laser-marked coating |
-
1995
- 1995-02-16 JP JP7051940A patent/JPH08215865A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004030920A1 (en) * | 2002-10-01 | 2004-04-15 | Nok Corporation | Marking method and marked molding |
| CN100343075C (en) * | 2002-10-01 | 2007-10-17 | Nok株式会社 | Marking method and marked molding |
| WO2010036503A2 (en) * | 2008-09-26 | 2010-04-01 | Electro Scientific Industries, Inc. | Method of laser micro-machining stainless steel with high cosmetic quality |
| WO2010036503A3 (en) * | 2008-09-26 | 2010-06-10 | Electro Scientific Industries, Inc. | Method of laser micro-machining stainless steel with high cosmetic quality |
| TWI405635B (en) * | 2008-09-26 | 2013-08-21 | Electro Scient Ind Inc | Method of laser micro-machining stainless steel with high cosmetic quality |
| JP2010184487A (en) * | 2009-02-13 | 2010-08-26 | Inoac Corp | Method of manufacturing member with stitch pattern |
| US8524127B2 (en) | 2010-03-26 | 2013-09-03 | Electro Scientific Industries, Inc. | Method of manufacturing a panel with occluded microholes |
| JP2012088074A (en) * | 2010-10-15 | 2012-05-10 | Ritsumeikan | Tool having water-repellent layer and method of manufacturing the tool |
| KR101373677B1 (en) * | 2013-07-18 | 2014-03-14 | 윤석헌 | Method for processing metal material using film and metallic interior and exterior panel products made therefrom |
| WO2017211888A1 (en) * | 2016-06-08 | 2017-12-14 | Weilburger Coatings Gmbh | Aqueous composition for producing a laser-markable coating, and laser-marked coating |
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