JPH05282956A - Manufacture of rubber switch cover member - Google Patents
Manufacture of rubber switch cover memberInfo
- Publication number
- JPH05282956A JPH05282956A JP10552292A JP10552292A JPH05282956A JP H05282956 A JPH05282956 A JP H05282956A JP 10552292 A JP10552292 A JP 10552292A JP 10552292 A JP10552292 A JP 10552292A JP H05282956 A JPH05282956 A JP H05282956A
- Authority
- JP
- Japan
- Prior art keywords
- cover member
- coating film
- fragments
- light transmitting
- rubber switch
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/18—Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks
- H01H2009/187—Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks having symbols engraved or printed by laser
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ゴム製スイッチ用カバ
ー部材（以下カバー部材という）の製造方法、特にはキ
ートップ部に光透過部を有する照光式スイッチ、例えば
車載用電話機、各種押釦スイッチ、または暗所用押釦ス
イッチなどに用いられるカバー部材の製造方法に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a cover member for a rubber switch (hereinafter referred to as a cover member), and more particularly, an illuminated switch having a light transmitting portion in a key top portion, such as an in-vehicle telephone and various push button switches. , Or a method of manufacturing a cover member used for a push button switch for dark places and the like.
【０００２】[0002]
【従来の技術】透明または半透明の照光式カバー部材の
製造には、その表面に着色塗料で塗膜を形成し、この塗
膜面に任意の文字または図形の形にレーザー光を照射
し、照射部分の塗膜を除いて光透過部を形成させてい
る。2. Description of the Related Art To manufacture a transparent or translucent illuminated cover member, a coating film is formed on the surface thereof with a colored paint, and the coating film surface is irradiated with laser light in the form of arbitrary characters or figures, The light transmitting portion is formed except for the coating film on the irradiated portion.
【０００３】しかしながら、レーザー光を照射した部分
の塗膜を除去する際には種々の問題がある。すなわち、
塗膜にレーザー光で穴を開けると、塗膜の燃焼ガス、分
解物、分解残渣等のフラグメントが生じて穴およびその
周辺に付着残存する。However, there are various problems in removing the coating film on the portion irradiated with the laser beam. That is,
When a hole is made in the coating film with a laser beam, fragments such as combustion gas, decomposition products, decomposition residues of the coating film are generated and adhere and remain in the hole and its periphery.
【０００４】塗膜を構成する高分子物質は、一般に赤外
線領域から紫外線領域において強い光吸収を行うので、
レーザー光の波長がμｍ程度、特には０．１〜２μｍの
ときフラグメントの発生がいちじるしい。かかるレーザ
ーとしては、エキシマレーザー（発振波長が０．１９３
〜０．３０８μｍ）、ＹＡＧレーザー（発振波長が１．
０６μｍ）、ＣＯz レーザー（発振波長が１０．６μ
ｍ）等が挙げられる。Since the polymer substance constituting the coating film generally absorbs strongly in the infrared region to the ultraviolet region,
When the wavelength of the laser light is about μm, particularly 0.1 to 2 μm, the generation of fragments is remarkable. As such a laser, an excimer laser (oscillation wavelength: 0.193
~ 0.308 μm), YAG laser (oscillation wavelength 1.
06 μm), CO z laser (oscillation wavelength is 10.6 μm)
m) and the like.
【０００５】このようなレーザー光を照射すると、レー
ザー光の波長が塗膜を構成している化学結合の吸収波長
領域に相当するため強い光吸収があり、光化学反応が起
こり、塗膜を構成する炭素、水素、窒素、フッ素、塩
素、ケイ素などの原子間の結合が切断されて、質量のよ
り小さい分子あるいは原子、いわゆるフラグメントが発
生する。このように結合が切断して発生したフラグメン
トはもとの分子よりも非常に大きな比体積を有し、大部
分は揮発性の分子、例えばＣＯ2 、ＨＣＨＯ、ＮＯなど
となり飛散するが、一部は飛散しきれず、炭素、炭素化
合物、窒素化合物などとなり、塗膜のレーザー光照射部
分およびその周辺に付着フラグメントとして残存するの
である。When irradiated with such a laser beam, the wavelength of the laser beam corresponds to the absorption wavelength region of the chemical bond constituting the coating film, so that strong light absorption occurs and a photochemical reaction occurs to form the coating film. Bonds between atoms such as carbon, hydrogen, nitrogen, fluorine, chlorine, and silicon are broken to generate molecules or atoms with smaller mass, so-called fragments. Fragments generated by such cleavage of bonds have a much larger specific volume than the original molecule, and most of them are volatile molecules such as CO 2 , HCHO, NO, etc., and are scattered, but some Cannot be completely scattered, and become carbon, carbon compounds, nitrogen compounds, etc., and remain as adhered fragments in the laser light irradiation portion of the coating film and its periphery.
【０００６】このフラグメントは被加工物の外観を損な
うのみならず、周囲に飛散、再付着して作業性を低下さ
せたり、場合によっては以後の加工工程に悪影響を及ぼ
すおそれがあるので、これを除去するため、トルエン等
の有機溶剤、水あるいは研磨材で拭き取ったり、塗膜を
有機溶剤中で超音波洗浄したり、また、アシストガスを
吹き付けながらレーザー光を照射して加工する方法等が
用いられている。This fragment not only spoils the appearance of the work piece, but also scatters and re-attaches to the surroundings to reduce workability, and in some cases, may adversely affect the subsequent processing steps. To remove it, wipe it off with an organic solvent such as toluene, water or an abrasive, ultrasonically clean the coating film in an organic solvent, or irradiate laser light while blowing an assist gas to process it. Has been.
【０００７】[0007]
【発明が解決しようとする課題】上記のように、レーザ
ー光照射部分およびその周辺に付着したフラグメントを
除去する種々の方法が用いられているが、有機溶剤、水
を使用する方法は簡単にでき除去効果が高いものの、穴
明け加工や微細な形状の加工を行った場合などでは付着
フラグメントを拭き取りきれないうえ、有機溶剤の場合
塗膜がこれに犯される危険があり、適用できる塗膜や有
機溶剤の種類が限定され、また湿式なので付着フラグメ
ントを除去した後乾燥工程を必要とし、汚れた廃液処理
に費用がかさみコスト高となる。研磨材を用いる洗浄
は、製品の必要な部分にキズをつけることがあり、ま
た、研磨材自体を洗い流す工程が生じるなどの問題があ
る。またアシストガスを吹き付ける方法では、フラグメ
ントを完全に吹き飛ばすことが困難である。As described above, various methods for removing the fragments adhering to the laser light-irradiated portion and its periphery have been used, but the method using an organic solvent or water is simple. Although it has a high removal effect, it can not wipe off the attached fragments when drilling or processing fine shapes, and in the case of an organic solvent there is a risk that the coating film will be violated by this. The type of solvent is limited, and since it is wet, a drying step is required after removing the adhered fragments, and the treatment of dirty waste liquid is expensive and costly. The cleaning with the abrasive has a problem that a necessary part of the product may be scratched and a step of washing out the abrasive itself occurs. Moreover, it is difficult to completely blow out the fragments by the method of blowing the assist gas.
【０００８】[0008]
【課題を解決するための手段】本発明はオゾンが酸化効
果をもつこと、あるいは気体プラズマが分子を活性化し
て化学反応を惹き起こすことに着目し、前記した従来の
問題を解決するためなされたもので、これは透明または
半透明のゴム製スイッチ用カバー部材の表面に、着色塗
料で塗膜を形成し、この塗膜面に文字または図形の形に
レーザー光を照射して塗膜を除き光透過部を形成するゴ
ム製スイッチ用カバー部材の製造方法において、レーザ
ー光を照射した際に生じ、光透過部およびその周辺に付
着するフラグメントを、オゾン処理あるいはプラズマ処
理して除去することを特徴とするカバー部材の製造方法
を要旨とする。DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems by paying attention to the fact that ozone has an oxidizing effect or that gas plasma activates molecules to cause a chemical reaction. This is a transparent or semi-transparent rubber cover member for switches, where a coating film is formed with colored paint and the coating film surface is irradiated with laser light to remove the coating film. In the method for manufacturing a cover member for a rubber switch that forms a light transmitting portion, the method is characterized in that fragments generated when a laser beam is irradiated and attached to the light transmitting portion and its periphery are removed by ozone treatment or plasma treatment. The gist is a method of manufacturing the cover member.
【０００９】オゾンが強い酸化力をもち、有機物や有機
金属化合物と容易に反応することは広く知られていると
おりで、上記のフラグメントの付着した塗膜をオゾン雰
囲気中で酸化処理すると、オゾンのもつ酸化力で付着フ
ラグメントはＣＯ、ＣＯ2 、ＮＯなどの揮発性の分子に
酸化され、付着フラグメントを塗膜の表面から飛散、除
去することができる。ここでいうオゾン雰囲気とはオゾ
ンを含有する気体のことで、オゾン濃度については特に
制限はないが、１０〜１００，０００ppm が好ましい。
その理由は、オゾン濃度が１０ppm 未満では付着フラグ
メントを除去するのに長時間を要し、逆に１００，００
０ppm を越えると爆発の危険が生じ、また高濃度のオゾ
ンが漏れた場合には人体に悪影響があるためである。It is widely known that ozone has a strong oxidizing power and easily reacts with organic substances and organometallic compounds. When the coating film to which the above fragments are attached is subjected to an oxidation treatment in an ozone atmosphere, ozone The attached fragments are oxidized to volatile molecules such as CO, CO 2 and NO by the oxidizing power, and the attached fragments can be scattered and removed from the surface of the coating film. The ozone atmosphere referred to here is a gas containing ozone, and the ozone concentration is not particularly limited, but is preferably 10 to 100,000 ppm.
The reason is that if the ozone concentration is less than 10 ppm, it takes a long time to remove the attached fragments, and conversely, 100,00 is required.
This is because if it exceeds 0 ppm, there is a danger of explosion, and if a high concentration of ozone leaks, it has a bad effect on the human body.
【００１０】オゾン雰囲気を作成するにはいろいろな方
法があるが、最も一般的な方法としては、空気や酸素に
紫外線照射やコロナ放電を行う方法、あるいはオゾナイ
ザーと呼ばれる装置で乾燥空気または酸素中に無声放電
を行う方法があり、これらの方法を組み合わせてもよ
い。このようにして発生したオゾンは強い電子親和性を
もつため強い酸化作用を有し、さらにはオゾンを発生さ
せる過程で生じる励起酸素原子も、酸化効果があるので
一層酸化力が高まり、付着フラグメントを酸化、分解、
気化して除去することが可能になる。There are various methods for creating an ozone atmosphere. The most common method is to irradiate air or oxygen with ultraviolet rays or perform corona discharge, or to dry air or oxygen with a device called an ozonizer. There is a method of performing silent discharge, and these methods may be combined. Ozone generated in this manner has a strong electron affinity and thus has a strong oxidizing action. Further, excited oxygen atoms generated in the process of generating ozone also have an oxidizing effect, so that the oxidizing power is further enhanced and the attached fragments are Oxidation, decomposition,
It becomes possible to vaporize and remove.
【００１１】一方、プラズマは正負に帯電した可動粒子
の集合体であり、有機物などの材料を活性化させ化学反
応を引き起こし、分子は活性化、異性体化され、構成元
素の脱離や分子の崩壊が起こる。この反応を応用して、
付着フラグメントを気体状態のプラズマを含有するプラ
ズマ雰囲気中に投入してプラズマ処理すると、塗膜の表
面にあった付着フラグメントが励起、活性化されて分子
構造が崩壊、気体化し容易にこれを除去することができ
る。気体プラズマは、例えばプラズマ発生装置の反応容
器を１〜0.1 Torrの低圧に保ち、高周波電力を印加すれ
ば容易に解離して得ることができる。On the other hand, plasma is an assembly of positively and negatively charged movable particles, which activates a material such as an organic substance to cause a chemical reaction, and the molecule is activated and isomerized, desorbing constituent elements and desorbing the molecule. Collapse occurs. Applying this reaction,
When the attached fragment is put into a plasma atmosphere containing a plasma in a gaseous state and plasma-treated, the attached fragment on the surface of the coating film is excited and activated, the molecular structure is destroyed, and it is easily vaporized and removed. be able to. Gaseous plasma can be easily obtained by dissociating the plasma by, for example, keeping the reaction vessel of the plasma generator at a low pressure of 1 to 0.1 Torr and applying high frequency power.
【００１２】[0012]
（実施例１）透過性の高いシリコーン材料で作られたカ
バー部材を、顔料を含有するシリコーン樹脂主体の塗膜
で被覆し、ＹＡＧレーザーの第２高調波（発振波長０．
５３２μｍ）を照射して、塗膜表面に文字や数字の形の
光透過部を作る、いわゆるマーキング加工を行った。レ
ーザー光照射部分およびその周辺にフラグメントが付着
したため、プラズマ発生装置に投入してプラズマ処理し
たところ、１分間で完全に付着フラグメントを除去する
ことができた。Example 1 A cover member made of a highly transparent silicone material is covered with a silicone resin-based coating film containing a pigment, and the second harmonic wave of the YAG laser (oscillation wavelength: 0.
532 μm) to irradiate the surface of the coating film to form light transmitting portions in the shape of letters and numbers, so-called marking processing was performed. Since the fragments adhered to the laser light irradiation portion and the periphery thereof, the fragments were completely removed in 1 minute when placed in a plasma generator and subjected to plasma treatment.
【００１３】（実施例２）実施例１におけるプラズマ発
生装置の替わりに、１０００Ｗのオゾン発生装置に投入
してオゾン処理したところ、２分間で完全に付着フラグ
メントを除去することができた。(Embodiment 2) In place of the plasma generator in Embodiment 1, an ozone generator of 1000 W was charged and subjected to ozone treatment, and the adhered fragments could be completely removed in 2 minutes.
【００１４】（比較例１）実施例１における、レーザー
光照射部分およびその周辺にフラグメントが付着したカ
バー部材を、アルコール中で超音波洗浄したところ、付
着フラグメントを完全に除去するのに３０分を要し、さ
らに表面のアルコールを乾燥、除去するのに２分を要し
た。(Comparative Example 1) The cover member in Example 1 in which fragments were adhered to the laser irradiation portion and its periphery was subjected to ultrasonic cleaning in alcohol, and it took 30 minutes to completely remove the adhered fragments. In addition, it took 2 minutes to dry and remove the alcohol on the surface.
【００１５】（比較例２）実施例１において、ＹＡＧレ
ーザーの第２高調波で塗膜にマーキング加工を行う際
に、ヘリウムガスを加工部に吹きつけながらレーザー光
を照射したところ、フラグメントの付着量は半分に減少
したが完全に付着を防止することはできなかった。Comparative Example 2 In Example 1, when the coating film was marked with the second harmonic of the YAG laser, the helium gas was blown to the processed portion to irradiate the laser beam, which resulted in the attachment of fragments. Although the amount was reduced to half, it was not possible to completely prevent the adhesion.
【００１６】[0016]
【発明の効果】本発明は、微細な加工形状であっても完
全に付着フラグメントを除去することができ、乾式であ
るため付着フラグメント除去後に乾燥工程を必要とせ
ず、さらに安価に除去できるので産業上きわめて有用な
ものである。INDUSTRIAL APPLICABILITY The present invention is capable of completely removing attached fragments even in a finely processed shape, and since it is a dry method, it does not require a drying step after the attached fragments are removed, and can be removed at low cost. Above all very useful.
Claims (1)
バー部材の表面に、着色塗料で塗膜を形成し、この塗膜
面に文字または図形の形にレーザー光を照射して塗膜を
除き光透過部を形成するゴム製スイッチ用カバー部材の
製造方法において、レーザー光を照射した際に生じ、光
透過部およびその周辺に付着するフラグメントを、オゾ
ン処理あるいはプラズマ処理して除去することを特徴と
するゴム製スイッチ用カバー部材の製造方法。1. A transparent or translucent rubber cover member for a switch is coated with a coating film with a coloring paint, and the coating film surface is irradiated with laser light to remove the coating film. In the method for manufacturing a cover member for a rubber switch that forms a light transmitting portion, the method is characterized in that fragments generated when a laser beam is irradiated and attached to the light transmitting portion and its periphery are removed by ozone treatment or plasma treatment. And a method for manufacturing a cover member for a rubber switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10552292A JPH05282956A (en) | 1992-03-31 | 1992-03-31 | Manufacture of rubber switch cover member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10552292A JPH05282956A (en) | 1992-03-31 | 1992-03-31 | Manufacture of rubber switch cover member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05282956A true JPH05282956A (en) | 1993-10-29 |
Family
ID=14409933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10552292A Pending JPH05282956A (en) | 1992-03-31 | 1992-03-31 | Manufacture of rubber switch cover member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05282956A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004038746A1 (en) * | 2002-10-23 | 2004-05-06 | Sunarrow Ltd. | Key unit, method for marking key top, and method for manufacturing key unit using the same |
| WO2004068519A1 (en) * | 2003-01-30 | 2004-08-12 | Sunarrow Limited | Method for marking key top made of translucent material, key top marked by that method, key unit, and process for producing key unit |
| CN1329934C (en) * | 2002-10-23 | 2007-08-01 | 阳箭有限公司 | Key unit, method for marking key top, and method for manufacturing key unit using the same |
| CN107731597A (en) * | 2017-10-27 | 2018-02-23 | 福达合金材料股份有限公司 | A kind of method for improving electrical contact material surface contact conditions |
-
1992
- 1992-03-31 JP JP10552292A patent/JPH05282956A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004038746A1 (en) * | 2002-10-23 | 2004-05-06 | Sunarrow Ltd. | Key unit, method for marking key top, and method for manufacturing key unit using the same |
| KR100702886B1 (en) * | 2002-10-23 | 2007-04-04 | 선아로 가부시키가이샤 | Key unit, method for marking key top, and method for manufacturing key unit using the same |
| CN1329934C (en) * | 2002-10-23 | 2007-08-01 | 阳箭有限公司 | Key unit, method for marking key top, and method for manufacturing key unit using the same |
| US7512229B2 (en) | 2002-10-23 | 2009-03-31 | Sunarrow Ltd | Key unit, method for marking key top, and method for manufacturing key unit using the same |
| WO2004068519A1 (en) * | 2003-01-30 | 2004-08-12 | Sunarrow Limited | Method for marking key top made of translucent material, key top marked by that method, key unit, and process for producing key unit |
| JPWO2004068519A1 (en) * | 2003-01-30 | 2006-05-25 | サンアロー株式会社 | Method for marking key top made of translucent material, key top marked thereby, key unit, and method for manufacturing key unit |
| US7616224B2 (en) | 2003-01-30 | 2009-11-10 | Sunarrow Limited | Process of producing key units wherein marking on their tops made of light-transmitting material can be completed later on |
| CN107731597A (en) * | 2017-10-27 | 2018-02-23 | 福达合金材料股份有限公司 | A kind of method for improving electrical contact material surface contact conditions |
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| JPH0768162A (en) | Method for cleaning off deposit and device therefor | |
| JPH10199846A (en) | Ultraviolet treating method |