JPH03123675A - Method for coating resin molded body - Google Patents
Method for coating resin molded bodyInfo
- Publication number
- JPH03123675A JPH03123675A JP1258783A JP25878389A JPH03123675A JP H03123675 A JPH03123675 A JP H03123675A JP 1258783 A JP1258783 A JP 1258783A JP 25878389 A JP25878389 A JP 25878389A JP H03123675 A JPH03123675 A JP H03123675A
- Authority
- JP
- Japan
- Prior art keywords
- masking material
- molded body
- resin molded
- film
- masking
- 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
- 229920005989 resin Polymers 0.000 title claims abstract description 53
- 239000011347 resin Substances 0.000 title claims abstract description 53
- 238000000576 coating method Methods 0.000 title claims abstract description 48
- 239000011248 coating agent Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims description 15
- 230000000873 masking effect Effects 0.000 claims abstract description 84
- 239000000463 material Substances 0.000 claims abstract description 82
- 239000002904 solvent Substances 0.000 claims abstract description 25
- 239000004088 foaming agent Substances 0.000 claims abstract description 15
- 238000000465 moulding Methods 0.000 claims description 9
- 238000010422 painting Methods 0.000 claims description 8
- 238000005507 spraying Methods 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- 239000003973 paint Substances 0.000 description 11
- 238000007654 immersion Methods 0.000 description 8
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 239000006260 foam Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 239000004604 Blowing Agent Substances 0.000 description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000002075 main ingredient Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 3
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 3
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 239000004923 Acrylic lacquer Substances 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- 239000000728 ammonium alginate Substances 0.000 description 1
- 235000010407 ammonium alginate Nutrition 0.000 description 1
- KPGABFJTMYCRHJ-YZOKENDUSA-N ammonium alginate Chemical compound [NH4+].[NH4+].O1[C@@H](C([O-])=O)[C@@H](OC)[C@H](O)[C@H](O)[C@@H]1O[C@@H]1[C@@H](C([O-])=O)O[C@@H](O)[C@@H](O)[C@H]1O KPGABFJTMYCRHJ-YZOKENDUSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、樹脂成形体の塗装方法、より詳しく言えば、
樹脂成形体をマスキング材を使って所望のパターンの非
塗装部分を残して塗装する方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for coating a resin molded article, and more specifically,
This invention relates to a method of painting a resin molded body using a masking material while leaving unpainted portions of a desired pattern.
樹脂成形体を所望のパターンの非塗装部分を残して塗装
するためにマスキングを行うことは公知の技術である。It is a known technique to perform masking to paint a resin molded body while leaving unpainted portions of a desired pattern.
マスキングを利用する従来の塗装方法では、樹脂成形体
上のマスキング材とマスキング材上の除去すべき塗膜と
を取除くために、予めマスキング部分へ貼付けておいた
粘着テープを塗膜形成後に剥離したり、あるいは前もっ
てマスキング部分に剥離可能なマスキング材の皮膜を形
成しておき、塗膜形成後に粘着テープを用いもしくは高
圧エアーを吹付けて塗膜と共にマスキング材皮膜を剥離
したりしていた。In conventional painting methods that use masking, in order to remove the masking material on the resin molding and the coating film on the masking material that should be removed, adhesive tape that has been applied to the masking area in advance is peeled off after the coating film is formed. Alternatively, a removable masking material film was previously formed on the masking area, and after the coating film was formed, the masking material film was peeled off along with the paint film using adhesive tape or by spraying high-pressure air.
上記の如き従来の塗装方法においては、マスキング部分
に予め粘着テープを貼付けておく場合にはテープの貼付
は精度を要求され、剥離に手間がかかる等の欠点があり
、また、マスキング部分に前もって可剥性マスキング材
の皮膜を形成しておく場合にはその皮膜を完全に剥すこ
とが困難であり、部分的に塗膜が残留する等の欠点があ
った。In the conventional painting method as described above, there are drawbacks such as requiring precision when pasting adhesive tape on the masking area and requiring time and effort to peel it off. When a film of a removable masking material is formed, it is difficult to completely remove the film, and there are drawbacks such as the paint film remaining partially.
これらの欠点を克服することを目的として、出願人は先
に、簡単な工程によって精度よく所望パターンの非塗装
部分を残して樹脂成形体を塗装する方法の特許出願（特
願昭６３−１４１６４２号）を提出した。In order to overcome these drawbacks, the applicant previously filed a patent application (Japanese Patent Application No. 141,642/1983) for a method of painting resin moldings by a simple process while leaving unpainted areas with a desired pattern with high accuracy. ) was submitted.
この特願昭６３−１４１６４２号明細書の塗装方法では
、マスキング部分に予め形成させたマスキング材とこの
マスキング材上の塗膜とを除去するためにその部分へマ
スキング材を溶解可能な溶剤を高圧で噴射している。ま
た、溶剤の噴射に先立ち、剥離すべき塗膜と樹脂成形体
との密着性を低下させる目的で、例えば、塗装成形体を
塗膜が完全に硬化する前に温水中へ浸漬させることが行
われている。In the coating method disclosed in Japanese Patent Application No. 63-141642, a solvent capable of dissolving the masking material is applied to the masking portion under high pressure in order to remove the masking material previously formed on the masking portion and the coating film on the masking material. It is injected with. Furthermore, prior to spraying the solvent, in order to reduce the adhesion between the coating film to be peeled off and the resin molding, for example, the painted molding may be immersed in warm water before the coating film is completely cured. It is being said.
上記の特願昭６３−１４１６４２号明細書記載の塗装方
法にあっては、マスキング材とその上の塗膜とを除去す
るのに高圧の溶剤を噴射するため、樹脂成形体上に残す
べき塗膜にピンホールが生じることがあり、すなわち塗
装面が不良になることがある。In the coating method described in the specification of Japanese Patent Application No. 63-141642, since a high-pressure solvent is injected to remove the masking material and the coating film thereon, the coating that should be left on the resin molded body is Pinholes may form in the membrane, ie the painted surface may become defective.
また、溶剤の噴射前に樹脂成形体と剥離すべき塗膜との
密着性の低下を目的として塗装成形体を例えば温水に浸
漬させる場合、その効果を十分に発揮させるためにはよ
り高い温度（例えば８０℃）及びより長い時間（例えば
１５分程度）を用いる方が有利であるが、塗装成形体を
高温に長時間さらすことには、樹脂成形体が変形する恐
れが生じ且つ生産性の低下につながるという欠点がある
。In addition, when the coated molded body is immersed in warm water for the purpose of reducing the adhesion between the resin molded body and the coating film to be peeled off before spraying the solvent, a higher temperature ( For example, 80°C) and for a longer period of time (for example, about 15 minutes) is advantageous, but exposing the coated molded product to high temperatures for a long time may cause the resin molded product to deform and reduce productivity. The disadvantage is that it leads to
本発明は、塗装面を不良にすることがなく、樹脂成形体
を変形させることがなく、且つ生産性を向上させること
のできる樹脂成形体塗装方法を提供することを目的とす
る。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for coating a resin molded object that does not cause the painted surface to be defective, does not deform the resin molded object, and can improve productivity.
本発明の塗装方法は、発泡剤を含んでなるマスキング材
を樹脂成形体表面へ所望のパターンに塗布し、該マスキ
ング材上及びこのマスキング材を含む樹脂成形体表面に
塗膜を形成した後、この塗装された樹脂成形体を高温に
さらし、次いで該樹脂成形体のマスキング材塗布部分へ
そのマスキング材を溶解可能な溶剤を噴射し、マスキン
グ材及びマスキング材上の塗膜を除去してそれ以外の部
分の塗膜を残すものである。The coating method of the present invention includes applying a masking material containing a foaming agent to the surface of a resin molded body in a desired pattern, forming a coating film on the masking material and on the surface of the resin molded body containing the masking material, and then This painted resin molded body is exposed to high temperature, and then a solvent capable of dissolving the masking material is injected onto the part of the resin molded body to which the masking material is applied, and the masking material and the coating film on the masking material are removed. This leaves the paint film on the parts.
本発明の塗装方法が適用可能な樹脂成形体は広範囲に及
び、ＡＢＳ （アクリロニトリルブタジェンスチレン）
樹脂、アクリル樹脂、ポリスチレン樹脂等の材質のもの
を使用することができる。樹脂成形体には、−船釣には
、マスキング材の塗布前に通常の脱脂洗浄処理及び下地
塗装処理を施す。The coating method of the present invention can be applied to a wide range of resin moldings, including ABS (acrylonitrile butadiene styrene)
Materials such as resin, acrylic resin, polystyrene resin, etc. can be used. For boat fishing, the resin molded body is subjected to the usual degreasing and cleaning treatment and base coating treatment before applying the masking material.
マスキング材の主剤成分は、マスキング材及びマスキン
グ材上の塗膜を除去するために使用する溶剤に可溶性で
あり且つ成形体の樹脂材料と不相溶性であるならば、ど
のようなものでもよい。例えばその溶剤として水を使用
する場合、カルボキシメチルセルロース（ＣＩＡＣ）
、アルギン酸アンモン、ポリ酢酸ビニル（ＰＶＡ） 、
ポリビニルピロリドン等の水溶性樹脂を主剤として使用
することができる。The main component of the masking material may be of any type as long as it is soluble in the masking material and the solvent used to remove the coating film on the masking material, and is incompatible with the resin material of the molded article. For example, when water is used as the solvent, carboxymethyl cellulose (CIAC)
, ammonium alginate, polyvinyl acetate (PVA),
A water-soluble resin such as polyvinylpyrrolidone can be used as the main ingredient.
本発明においてマスキング材に配合される発泡剤は、マ
スキング材に配合して樹脂成形体に塗布し更に塗料の塗
膜を形成するまでは発泡することがなく、その後塗装成
形体を高温（例えば７０〜８０℃）にさらすことによっ
て発泡するようなものでありさえすれば、どのようなも
のを使用しても差支えない。このような発泡剤として好
適なものの一例は、マイクロスフェア−Ｆ−３０Ｄ（松
本油脂製薬社製）である。この発泡剤は、塩化ビニリデ
ン共重合物を殻壁として低沸点の炭化水素を内包する粒
径１０〜２０ｊｌＩｎの熱膨張性マイクロカプセル発泡
剤である。マスキング材の発泡剤含有量及び発泡剤を発
泡させるために塗装成形体がさらされるべき温度は、使
用する発泡剤の種類及び塗装成形体をその温度にさらす
時間の関数であって、実験により簡単に決めることがで
きる。In the present invention, the foaming agent blended into the masking material does not foam until it is blended into the masking material, applied to the resin molding, and further forms a paint film. Any material can be used as long as it foams when exposed to temperatures (~80°C). An example of a suitable foaming agent is Microsphere-F-30D (manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd.). This foaming agent is a thermally expandable microcapsule foaming agent having a particle size of 10 to 20 jlIn and containing a low boiling point hydrocarbon using a vinylidene chloride copolymer as a shell wall. The blowing agent content of the masking material and the temperature to which the painted body must be exposed to foam the blowing agent are a function of the type of blowing agent used and the time the painted body is exposed to that temperature, and can be easily determined by experiment. can be decided.
マスキング材は、一般には、主剤を溶解しうる液体に溶
解させてから基材の成形体に塗布され、次いで乾燥によ
りこの液体を蒸発させてマスキング層を形成する。この
液体は、主剤を溶解するとともに、好ましくは基材の成
形体にはじかれないものである。例えば、成形体の樹脂
材料がＡＢＳ樹脂である場合、主剤を溶解する液体とし
て水、アルコール（例えばメタノール、ブタノール）、
及び水とアルコールとの混合物等を使用することができ
るが、基材の成形体にはじかれないためには水とアルコ
ールとの混合物又はアルコールが好ましい。また、マス
キング材には、湿潤剤、増粘剤、可塑剤等を添加するこ
ともできる。Generally, a masking material is applied to a molded body of a base material after dissolving the base material in a liquid, and then the liquid is evaporated by drying to form a masking layer. This liquid dissolves the base material and is preferably not repelled by the molded body of the base material. For example, when the resin material of the molded body is ABS resin, the liquid for dissolving the base resin may be water, alcohol (e.g. methanol, butanol),
A mixture of water and alcohol can be used, but a mixture of water and alcohol or alcohol is preferable in order to avoid being repelled by the molded body of the base material. Moreover, a wetting agent, a thickener, a plasticizer, etc. can also be added to the masking material.
基材の成形体にマスキング材を塗布する方法は、基材上
に適当なマスキング層を形成させるどのような方法でも
よいが、好ましくはスクリーン印刷である。また塗布厚
さは２０〜３０−が好ましい。マスキング材は、塗布後
乾燥させる。マスキング材の調製に使用した溶剤は、こ
れにより蒸発する。The method of applying the masking material to the molded body of the base material may be any method that forms a suitable masking layer on the base material, but preferably screen printing is used. Moreover, the coating thickness is preferably 20 to 30 mm. After applying the masking material, let it dry. The solvent used to prepare the masking material is thereby evaporated.
次に、マスキング材を塗布した樹脂成形体表面に通常の
やり方で上塗り塗装を施し、塗膜を形成させる。Next, a top coat is applied in a conventional manner to the surface of the resin molded body coated with the masking material to form a coating film.
塗膜の形成された樹脂成形体は、発泡剤を発泡させるた
め高温にさらされる。これは例えば、塗装成形体に温風
を当て、あるいはそれを高温の液中に浸漬して実施する
ことができる。前者の場合には、温風に当ててから樹脂
成形体をマスキング主剤を溶解可能な液に浸漬させれば
、塗膜の剥離は一層容易になる。後者の場合には、後に
噴射される溶剤と同じものを用いるのが好都合である。The resin molded body with the coating film formed thereon is exposed to high temperature in order to foam the foaming agent. This can be carried out, for example, by applying hot air to the coated molded body or by immersing it in a hot liquid. In the former case, if the resin molded body is exposed to hot air and then immersed in a liquid that can dissolve the masking base agent, the coating film can be peeled off more easily. In the latter case it is advantageous to use the same solvent that is subsequently injected.
次いで、樹脂成形体のマスキング部分へマスキング材を
溶解可能な溶・剤を噴射して、その部分の塗膜をマスキ
ング材と共に選択的に除去する。この場合、噴射溶剤が
マスキング部分の周辺にかかっても差支えない。この溶
剤は、マスキング材の主剤は溶解させるが、成形体の樹
脂材料は溶解させないものである。例えば、成形体がＡ
ＢＳ樹脂製でありマスキング材主剤がポリビニルピロリ
ドンである場合の溶剤としては水、アルコール等を使用
することができる。この時の溶剤温度は、室温でもよく
、あるいは室温より高くてもよい。溶剤の噴射圧力は、
実験により簡単に決めることができるが、一般には３〜
５ｋｇ／ｃａｔ（ゲージ圧）程度で十分である。溶剤の
噴射時間も、やはり実験で容易に決定でき、一般には１
〜２秒程度で十分である。Next, a solvent/agent capable of dissolving the masking material is injected onto the masked portion of the resin molded body to selectively remove the coating film from that portion along with the masking material. In this case, there is no problem even if the sprayed solvent sprays around the masking part. This solvent dissolves the main ingredient of the masking material, but does not dissolve the resin material of the molded article. For example, if the molded product is A
When the masking material is made of BS resin and the main ingredient of the masking material is polyvinylpyrrolidone, water, alcohol, etc. can be used as the solvent. The solvent temperature at this time may be room temperature or higher than room temperature. The solvent injection pressure is
It can be easily determined by experiment, but generally 3~
About 5 kg/cat (gauge pressure) is sufficient. The solvent injection time can also be easily determined by experiment, and is generally 1
~2 seconds is sufficient.
通常は、マスキング材及びマスキング材上の塗膜は溶剤
の噴射によって完全に除去されるので、成形体上に塗膜
くずやマスキング材の一部が残ることはなく、従って一
般的には、それらを取り除くために成形体を洗浄する必
要はない。Normally, the masking material and the coating film on the masking material are completely removed by spraying a solvent, so no coating debris or part of the masking material remains on the molded object, and therefore, they are generally There is no need to clean the molded body to remove it.
こうして所定パターンの非塗装部分を残した樹脂成形体
には、その後トップコート塗装を施すこともできる。The resin molded body, in which the predetermined pattern of unpainted portions is left, can then be coated with a top coat.
本発明の方法によって塗装した樹脂成形体は、字ぬき表
示部を有する部品等、例えば自動車の空ｌ制御装置スイ
ッチノブのような表示兼用スイッチノブに利用すること
ができる。また、成形体の樹脂材料を光透過性とし且つ
塗膜を光不透過性としてこの塗装方法を適用した樹脂成
形体は、その後方に配置した光源より光を照射すること
によりその表示部のみを発光性にすることができる。The resin molded body coated by the method of the present invention can be used for parts having a letter-marked display section, for example, a switch knob that also serves as a display, such as a switch knob for an automobile's engine control device. In addition, when applying this coating method by making the resin material of the molded body transparent and the coating film opaque, only the display part of the molded body can be exposed by irradiating light from a light source placed behind it. Can be made luminescent.
本発明の方法においては、樹脂成形体に塗布したマスキ
ング倉に含まれている発泡剤が塗膜形成後に高温にさら
されることによって発泡し、マスキング材の体積を膨張
させ、それによりマスキング部分の塗膜と樹脂成形体と
の密着性を低下させ且つ塗膜を破ることができる。こう
して塗膜と樹脂成形体との密着性の低下したマスキング
部分へ適当な溶剤を比較的低い圧力で噴射することによ
って、マスキング材を溶解し、マスキング部分の塗膜を
選択的に且つ完全に除去することが可能になる。In the method of the present invention, the foaming agent contained in the masking tank applied to the resin molding foams when exposed to high temperature after the coating film is formed, expanding the volume of the masking material, thereby coating the masking area. It can reduce the adhesion between the film and the resin molded body and break the coating film. By spraying an appropriate solvent at a relatively low pressure onto the masked areas where the adhesion between the paint film and the resin molded body has deteriorated, the masking material is dissolved and the paint film on the masked areas is selectively and completely removed. It becomes possible to do so.
次に、自動車の空調制御装置スイッチノブの製作につい
ての実施例によって本発明を例示する。The invention will now be illustrated by an example for the fabrication of an automotive air conditioning control switch knob.
ノブの本体となる透光性ＡＢＳ樹脂製の基材１をフロン
、イソプロピルアルコール（ＩＰＡ）等の洗浄液で脱脂
洗浄後、アクリルラッカー（藤倉化成・レフランク７２
Ｍ）で下地塗装した。塗装後、５〜１０分間セツティン
グして塗膜厚さのムラをなくして厚さを均一にしてから
８０℃で３０分間強制乾燥を行った。After degreasing and cleaning the base material 1 made of translucent ABS resin, which will become the main body of the knob, with a cleaning solution such as Freon or isopropyl alcohol (IPA), apply acrylic lacquer (Fujikura Kasei, Refrank 72).
M) was used as a base coat. After painting, the coating was allowed to set for 5 to 10 minutes to eliminate unevenness in coating thickness and to make the thickness uniform, and then forced drying was performed at 80° C. for 30 minutes.
次イで、ポリビニルピロリドン７重量部、ｎ−ブタノー
ル１０重量部、増粘剤として粒径１〜２塵のアルミナ６
重量部及び粒径０．３−のアルミナ６重量部を配合して
なるマスキング材基剤１００重量部に対し、発泡剤（松
本油脂製薬社製マイクロスフェア−Ｆ−３０Ｄ）をそれ
ぞれ２．５．１０重量部添加したマスキング材を調製し
た。このマスキング材を、３２５メツシユのスクリーン
を使用して上記の下地塗装した基材上に３０−の厚さで
スクリーン印刷した。この時のマスキング材の粘度は１
０．０００ｃＰであった。マスキング材の印刷後、強制
乾燥によりｎ−ブタノールを蒸発させ、基材上にマスキ
ング層を形成させた。Next, 7 parts by weight of polyvinylpyrrolidone, 10 parts by weight of n-butanol, and 6 parts of alumina with a particle size of 1 to 2 dust as a thickener.
2.5 parts by weight of a foaming agent (Microsphere-F-30D manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd.) was added to 100 parts by weight of a masking material base prepared by blending 6 parts by weight of alumina with a particle size of 0.3 parts by weight. A masking material containing 10 parts by weight was prepared. This masking material was screen printed to a thickness of 30 mm onto the base coated substrate using a 325 mesh screen. The viscosity of the masking material at this time is 1
It was 0.000 cP. After printing the masking material, n-butanol was evaporated by forced drying to form a masking layer on the substrate.
上塗り塗装は、５０重量部の藤倉化成・レフラック７２
Ｍと５０重量部の藤倉化成・レフラックシンナー７０２
とを配合して調製した塗料を、塗膜厚１５〜２０Ｊ−で
塗装した。塗装後の空調制御装置スイッチノブの縦断面
図を第１図に示す。この図において、２はマスキング材
、３は上塗り塗装である。塗装後、５〜１０分間セツテ
ィングをしてから６０℃で３０分間強制乾燥を行った。The top coat is 50 parts by weight of Fujikura Kasei Refrac 72.
M and 50 parts by weight of Fujikura Kasei Refrac Thinner 702
A paint prepared by blending the above was applied to a film thickness of 15 to 20 J-. FIG. 1 shows a vertical cross-sectional view of the air conditioning control device switch knob after painting. In this figure, 2 is a masking material and 3 is a top coat. After painting, it was allowed to set for 5 to 10 minutes and then forced dry at 60°C for 30 minutes.
こうして塗装を施した樹脂成形体を温水に浸漬し、その
後マスキング部分に水を噴射して、塗膜の剥離について
の実験を行った。温水の温度は５０℃、６０℃、７０℃
及び８０℃とした。水の噴射は、水道の蛇口につないだ
ゴムホースの先端を指で圧迫して行った。従って水の噴
射圧力は、実際の装置におけるようにポンプで加圧され
たものよりもかなり低い圧力であった。実験結果を第１
表に示す。The thus-coated resin molded body was immersed in warm water, and then water was sprayed onto the masked area to conduct an experiment on peeling of the coating film. Hot water temperature is 50℃, 60℃, 70℃
and 80°C. Water was sprayed by pressing the tip of a rubber hose connected to a water faucet with a finger. The water injection pressure was therefore considerably lower than that pumped as in the actual device. Experimental results first
Shown in the table.
表中の時間は、塗装樹脂成形体を温水に浸漬させておい
た時間を表し、またこの時間の右側の○印は塗膜の剥離
除去が完全であったことを、そしてＸ印はそれが不十分
であったことを表している。The time in the table represents the time that the painted resin molded body was immersed in hot water, and the ○ mark to the right of this time indicates that the peeling and removal of the paint film was complete, and the X mark indicates that it was. It indicates that it was insufficient.
第１表
なお、この表中の発泡剤添加量０重量部で温水温度８０
℃の場合（比較例）のデータは、水道水の蛇口につない
だゴムホース先端を指で圧迫して得た擬似的な水の噴射
ではなく、実際の生産ラインの装置で４．３ｋｇ／ｃｒ
ｌ（ゲージ圧）の水を噴射して測定されたデータである
。Table 1 Note that when the amount of blowing agent added in this table is 0 parts by weight, the hot water temperature is 80.
The data for the case of ℃ (comparative example) is not a simulated water jet obtained by squeezing the tip of a rubber hose connected to a tap water faucet with a finger, but an actual production line device of 4.3 kg/cr.
This data was measured by injecting water at 1 (gauge pressure).
上記の実験結果では、８０℃の浸漬温水温度で浸漬後に
水の噴射により塗膜を完全に剥離することのできる浸漬
時間は、発泡剤を用いない場合（比較例）の半分以下に
短縮されている。７０℃の浸漬温水温度では、必要な浸
漬時間は比較例と大差ないように思われるが、実装置に
おいてはこの実験で使用した噴射圧力よりも高い圧力の
噴射が行われるため、浸漬時間はより短縮されるものと
考えられる。このように、実装置においては７０℃以下
の浸漬温度でも比較例よりも短い浸漬時間で塗膜を完全
に剥離除去することが可能であると予想できる。The above experimental results show that the immersion time required to completely remove the paint film by spraying water after immersion at a hot immersion water temperature of 80°C was reduced to less than half that of the case without using a foaming agent (comparative example). There is. At an immersion hot water temperature of 70°C, the required immersion time does not seem to be much different from the comparative example, but in the actual equipment, injection is performed at a higher pressure than the injection pressure used in this experiment, so the immersion time is longer. It is thought that the period will be shortened. Thus, it can be expected that in the actual device, it is possible to completely peel off and remove the coating film in a shorter immersion time than in the comparative example even at a immersion temperature of 70° C. or lower.
マスキング材及びその上の塗膜を除去した塗装樹脂成形
体は、必要に応じて更に溶剤で洗浄し又はエアーブロー
を行う等によって、それ−に同伴されている塗膜くずを
除去する。このようにして調製された字抜き部分４を有
する樹脂成形体の縦断面図を第２図に示す。この成形体
にクリアコートのトップコート塗装を行い乾燥させて完
成された、透光性の字ぬき表示部を有する樹脂成形体の
空調制御スイッチノブ５を第３図に示す。The coated resin molded body from which the masking material and the coating film thereon have been removed is further washed with a solvent or subjected to air blowing, if necessary, to remove any coating debris entrained therein. FIG. 2 shows a longitudinal cross-sectional view of the resin molded article having the cut-out portions 4 prepared in this manner. FIG. 3 shows an air conditioning control switch knob 5 of a resin molded body having a translucent character-marked display section, which was completed by applying a clear top coat to this molded body and drying it.
本発明の塗装方法では、発泡剤を含んでなるマスキング
材を使用し、そしてマスキング材を溶解可能な溶剤をマ
スキング部分に噴射する前に発泡剤を発泡させるため、
比較的短時間で、しかもより低温で塗膜と基材との密着
性を低下させ且つ塗膜を破いておくことが可能になる。In the coating method of the present invention, a masking material containing a foaming agent is used, and the foaming agent is foamed before spraying a solvent capable of dissolving the masking material onto the masking area.
It becomes possible to reduce the adhesion between the coating film and the substrate and tear the coating film in a relatively short time and at a lower temperature.
これに伴い、マスキング部分へ噴射する溶剤の圧力を低
下させてもなお、樹脂成形体を過度に高い温度にさらす
必要なしにより短い所要時間で字ぬき塗装することがで
きる。従って本発明の方法によれば、塗装面を不良にす
る心配なしに、樹脂成形体を変形させることなしに、高
い生産性でもって樹脂成形体を所望パターンの非塗装部
分を残して塗装することが可能になる。Accordingly, even if the pressure of the solvent injected to the masking area is lowered, it is still possible to perform the character-marking coating in a shorter time without exposing the resin molded body to excessively high temperatures. Therefore, according to the method of the present invention, it is possible to paint a resin molded body with high productivity, leaving unpainted portions of a desired pattern, without worrying about damaging the painted surface or deforming the resin molded body. becomes possible.
第１図は本発明に従ってマスキング材を塗布し、その上
に上塗り塗装を施した自動車用空調制御装置スイッチノ
ブの縦断面図、第２図は第１図の空調制御装置スイッチ
ノブからマスキング材とその上の塗膜を除去したものの
縦断面図、第３図は本発明の塗装方法を用いて製作した
自動車用空調制御装置スイッチノブの斜視図である。
図中、１は樹脂成形体、２はマスキング材、３は上塗り
塗装、４は字ぬき部分、５は自動車用空調制御装置スイ
ッチノブである。Fig. 1 is a vertical cross-sectional view of a switch knob of an air conditioning control device for an automobile on which a masking material is applied according to the present invention and a top coat is applied thereon. FIG. 3 is a longitudinal cross-sectional view of the product with the coating film removed thereon, and FIG. 3 is a perspective view of a switch knob of an automotive air conditioning control device manufactured using the coating method of the present invention. In the figure, 1 is a resin molded body, 2 is a masking material, 3 is a top coat, 4 is a blank part, and 5 is a switch knob for an automobile air conditioning control device.
Claims (1)
へ所望のパターンに塗布し、該マスキング材上及びこの
マスキング材を含む樹脂成形体表面に塗膜を形成した後
、この塗装された樹脂成形体を高温にさらし、次いで該
樹脂成形体のマスキング材塗布部分へそのマスキング材
を溶解可能な溶剤を噴射し、マスキング材及びマスキン
グ材上の塗膜を除去してそれ以外の部分の塗膜を残すこ
とを特徴とする、樹脂成形体の塗装方法。1. After applying a masking material containing a foaming agent to the surface of the resin molding in a desired pattern and forming a coating film on the masking material and on the surface of the resin molding containing this masking material, the coated resin The molded body is exposed to high temperature, and then a solvent capable of dissolving the masking material is injected onto the part of the resin molded body to which the masking material is applied, thereby removing the masking material and the coating film on the masking material, and removing the coating film from the other parts. A method of painting a resin molded object, characterized by leaving behind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1258783A JPH03123675A (en) | 1989-10-05 | 1989-10-05 | Method for coating resin molded body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1258783A JPH03123675A (en) | 1989-10-05 | 1989-10-05 | Method for coating resin molded body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03123675A true JPH03123675A (en) | 1991-05-27 |
Family
ID=17325017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1258783A Pending JPH03123675A (en) | 1989-10-05 | 1989-10-05 | Method for coating resin molded body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03123675A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006028639A (en) * | 2004-07-15 | 2006-02-02 | Schott Ag | Coated substrate with curved surface, and method for production of such coated substrate |
| US20180030599A1 (en) * | 2015-02-12 | 2018-02-01 | Jet Metal Technologies | Method and device for producing metal patterns on a substrate for decorative and/or functional purposes, manufacture of objects incorporating said production and set of consumables used |
| JP2018180168A (en) * | 2017-04-07 | 2018-11-15 | ホヤ レンズ タイランド リミテッドＨＯＹＡ Ｌｅｎｓ Ｔｈａｉｌａｎｄ Ｌｔｄ | Method for manufacturing optical member with processed pattern formed thereon |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49101424A (en) * | 1972-12-13 | 1974-09-25 | ||
| JPS5238863B2 (en) * | 1975-02-26 | 1977-10-01 | ||
| JPS55124573A (en) * | 1979-03-16 | 1980-09-25 | Honda Motor Co Ltd | Coating of object having uncoated portion |
| JPS58223462A (en) * | 1982-06-18 | 1983-12-26 | Fukuda Metal Kogei:Kk | Coating method using masking |
-
1989
- 1989-10-05 JP JP1258783A patent/JPH03123675A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49101424A (en) * | 1972-12-13 | 1974-09-25 | ||
| JPS5238863B2 (en) * | 1975-02-26 | 1977-10-01 | ||
| JPS55124573A (en) * | 1979-03-16 | 1980-09-25 | Honda Motor Co Ltd | Coating of object having uncoated portion |
| JPS58223462A (en) * | 1982-06-18 | 1983-12-26 | Fukuda Metal Kogei:Kk | Coating method using masking |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006028639A (en) * | 2004-07-15 | 2006-02-02 | Schott Ag | Coated substrate with curved surface, and method for production of such coated substrate |
| JP4520334B2 (en) * | 2004-07-15 | 2010-08-04 | ショット アクチエンゲゼルシャフト | Method for making a coated substrate having a curved surface |
| US8647710B2 (en) | 2004-07-15 | 2014-02-11 | Schott Ag | Coated substrate with a curved surface, and a method for production of a coated substrate such as this |
| US20180030599A1 (en) * | 2015-02-12 | 2018-02-01 | Jet Metal Technologies | Method and device for producing metal patterns on a substrate for decorative and/or functional purposes, manufacture of objects incorporating said production and set of consumables used |
| US11168398B2 (en) * | 2015-02-12 | 2021-11-09 | Jet Metal Technologies | Method and device for producing metal patterns on a substrate for decorative and/or functional purposes, manufacture of objects incorporating said production and set of consumables used |
| JP2018180168A (en) * | 2017-04-07 | 2018-11-15 | ホヤ レンズ タイランド リミテッドＨＯＹＡ Ｌｅｎｓ Ｔｈａｉｌａｎｄ Ｌｔｄ | Method for manufacturing optical member with processed pattern formed thereon |
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