JPH0351013Y2 - - Google Patents
Info
- Publication number
- JPH0351013Y2 JPH0351013Y2 JP1673383U JP1673383U JPH0351013Y2 JP H0351013 Y2 JPH0351013 Y2 JP H0351013Y2 JP 1673383 U JP1673383 U JP 1673383U JP 1673383 U JP1673383 U JP 1673383U JP H0351013 Y2 JPH0351013 Y2 JP H0351013Y2
- Authority
- JP
- Japan
- Prior art keywords
- paint
- coating film
- break
- sheet metal
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
本考案は樹脂塗装部品に関する。
従来、樹脂塗装部品として、プラスチツク素材
に板金用塗装したものは、外観上の格別の欠点は
ないが、衝撃強さが著しく低下する欠点があり、
また柔軟性ある塗料を塗装したものでは、衝撃強
さの低下はないが、板金塗装とは別塗料となるの
で、初期および長期耐久後に板金塗料部品との色
調，光沢，映像鮮明度等外観に差が現われる欠点
がある。
すなわち、例えばまず、ボデー板金塗装におい
ては、第１図縦断面図に示すように、素材Ｐの上
に表面を平滑化して光沢，映像鮮明度を向上させ
る塗膜D′，Ｃと、その上に顔料を添加して所定
の色調を出す塗膜Ｂと、その上に透明な塗料で主
として光沢を向上させる塗膜A′を施すものとし
て、１液型エポキシエステル塗料20μ（150℃×30
分）〜メラミンアルキツド系塗料20μ（150℃×20
分）等が知られている。
しかしながら、このような塗装は塗膜の破断伸
びが小さいため破断伸びの大きい素材に塗装する
と、下記データ例に示すように、塗装された素材
の破断伸びすなわち衝撃強さが著しく低下する。
The present invention relates to resin-coated parts. Conventionally, resin-coated parts made of plastic materials coated with sheet metal coatings have no particular defects in appearance, but they do have the disadvantage of significantly lowering their impact strength.
In addition, if the flexible paint is used, there is no decrease in impact strength, but since the paint is different from the sheet metal paint, the color tone, gloss, image clarity, etc. of the parts may differ from the sheet metal paint parts at the initial stage and after long-term durability. There are drawbacks that make a difference. For example, in body sheet metal painting, first, as shown in the vertical cross-sectional view of Figure 1, coatings D' and C are coated on the material P to smooth the surface and improve gloss and image clarity, and A one-component epoxy ester paint 20μ (150℃
minutes) ~ Melamine alkyd paint 20μ (150℃ x 20
minute) etc. are known. However, since such a coating has a small elongation at break, if it is applied to a material with a large elongation at break, the elongation at break, that is, the impact strength, of the coated material decreases significantly, as shown in the data example below.
【表】
次に、例えばウレタンバンパ用塗装において
は、第２図縦断面図に示すように、プラスチツク
素材Ｐ上に密着性向上および素材から溶出してく
る物質が塗膜B′へ移行するのを防止する塗膜Ｄ
と、その上に顔料を添加して所定の色調を出す塗
膜B′と、その上の透明な塗料で主として光沢を
向上させる塗膜Ａとを施すものとして、１液型ウ
レタン塗料20μ（110℃×20分）〜２液型ウレタン
塗料30μ〜２液型ウレタン塗料30μ（120℃×20分）
等が知られている。
さらに、例えばウレタンバンパ用塗装において
は、プラスチツク素材Ｐ上に上記塗膜D′と、そ
の上に顔料を添加して所定の色調を出す塗膜
B″とを施したものとして、１液型ウレタン塗料
20μ（120℃×10分）〜１液型ウレタン塗料50μ
（120℃×30分）等が知られている。
しかしながら、このような塗装は、いずれも、
板金用メラミンアルキツド塗料に比較して耐候性
が劣り、板金部品塗装とは別塗装となるので、板
金塗装部品との間に外観差（色調，光沢，映像鮮
明度）が出やすい欠点がある。
本考案はこのような事情に鑑みて提案されたも
ので、板金塗装部品との間に外観差のない耐候性
および耐衝撃性の優れた樹脂塗装部品を提供する
ことを目的とし、着色層として耐候性の良好なメ
ラミンアルキツド塗料を使用し、その上下層とし
て破断伸びの大きいウレタン塗料を使用して塗装
したことを特徴とする。
本考案の一実施例を図面について説明すると、
第３図はその縦断面図、第４図は第３図に示した
塗装部品の単独塗膜厚さと衝撃強さとの関係を示
す線図、第５図は単独塗膜の破断伸びとの衝撃強
さとの関係を示す線図である。
上図において、第１〜２図と同一の記号はそれ
ぞれ第１〜２図と同一の塗膜を示し、まず第３図
において、１はプラスチツク素材Ｐ、２は塗膜Ｄ
のアンダコート、３は塗膜Ｃの中塗、４は塗膜Ｂ
の上塗、５は塗膜Ａのトツプコートである。
こゝで、塗膜Ａ，Ｄは例えば、ウレタン系塗料
を、塗膜Ｂ，Ｃは例えば、メラミンアルキツド系
塗料をそれぞれ使用し、その破断伸びと膜厚は下
記に示すとおりである。[Table] Next, for example, in the case of coating for urethane bumpers, as shown in the vertical cross-sectional view in Figure 2, it is possible to improve the adhesion on the plastic material P and to reduce the transfer of substances eluted from the material to the coating film B'. Coating film D that prevents
, a coating film B' on which a pigment is added to produce a predetermined color tone, and a coating film A on top of which a transparent paint mainly improves gloss.One-component urethane paint 20μ (110 ℃ x 20 minutes) - 2-component urethane paint 30μ - 2-component urethane paint 30μ (120℃ x 20 minutes)
etc. are known. Furthermore, in the case of coating for urethane bumpers, for example, the above-mentioned coating film D' is applied to the plastic material P, and a pigment is added thereon to create a coating film that produces a predetermined color tone.
B'', one-component urethane paint
20μ (120℃ x 10 minutes) ~ 1-component urethane paint 50μ
(120℃ x 30 minutes) etc. are known. However, all such coatings
It has inferior weather resistance compared to melamine alkyd paint for sheet metal, and because it is painted separately from sheet metal parts, it has the disadvantage that differences in appearance (color tone, gloss, image clarity) tend to appear between it and sheet metal painted parts. . The present invention was proposed in view of these circumstances, and aims to provide resin-coated parts with excellent weather resistance and impact resistance that have no difference in appearance from sheet metal-coated parts. It is characterized by using a melamine alkyd paint with good weather resistance, and using urethane paint with a high elongation at break as the upper and lower layers. An embodiment of the present invention will be explained with reference to the drawings.
Figure 3 is a longitudinal cross-sectional view of the same, Figure 4 is a diagram showing the relationship between the individual coating film thickness and impact strength of the painted parts shown in Figure 3, and Figure 5 is a diagram showing the relationship between the fracture elongation and impact strength of the individual coating film. It is a diagram showing the relationship with strength. In the above figure, the same symbols as in Figs. 1 and 2 indicate the same coating films as in Figs.
Undercoat, 3 is intermediate coat of coating film C, 4 is coating film B
5 is the top coat of coating film A. Here, coating films A and D are made of, for example, urethane-based paint, and coating films B and C are made of, for example, melamine alkyd-based paint, and their elongation at break and film thickness are as shown below.
【表】
このような塗装構造において、単独塗膜厚さと
塗装品の衝撃強さとの関係は、第４図に示すよう
になり、塗膜Ａ，Ｄとも５〜80μの膜厚範囲が適
正であり、この範囲以下では耐候性が不良であ
り、この範囲以上では衝撃強さが不良となるとゝ
もに塗膜のたれが発生する。
また、その単独塗膜の破断伸びとの塗装品の衝
撃強さとの関係は、第５図に示すようになり、塗
膜Ａ，Ｄとも20％以上あれば、効果が発揮され
る。
このような塗装部品によれば、下記の効果が奏
せられる。
(1) 塗膜Ａ，Ｄに柔軟性すなわち、破断伸びの大
きい塗膜を使用することにより、下記データの
示すように、塗装品の衝撃強さが著しく向上す
る。[Table] In such a coating structure, the relationship between the individual coating film thickness and the impact strength of the coated product is shown in Figure 4, and a film thickness range of 5 to 80μ is appropriate for both coatings A and D. Below this range, the weather resistance is poor, and above this range, the impact strength is poor and the coating film sag. The relationship between the elongation at break of a single coating film and the impact strength of the coated product is as shown in Figure 5, and the effect is exhibited when both coatings A and D are 20% or more. According to such a painted part, the following effects can be achieved. (1) By using flexible coatings, that is, coatings with high elongation at break, for coatings A and D, the impact strength of the coated product is significantly improved, as shown by the data below.
【表】
(2) 塗膜Ｂ，Ｃに板金用塗料が使用できるので、
板金と同時塗装することにより、他部品との外
観差（色調，光沢，映像鮮明度）および耐久性
差による長期使用後の外観差もなくすことがで
きる（この場合の塗膜Ａは透明のものである）。
要するに本考案によれば、着色層として耐候性
の良好なメラミンアルキツド塗料を使用し、その
上下層として破断伸びの大きいウレタン塗料を使
用して塗装したことにより、板金塗装部品との外
観差をなくし、耐候性および耐衝撃性に優れた塗
装部品を得るから、本考案は産業上極めて有益な
ものである。[Table] (2) Since sheet metal paint can be used for coating films B and C,
By painting at the same time as the sheet metal, it is possible to eliminate differences in appearance between other parts (color tone, gloss, image clarity) and differences in appearance after long-term use due to differences in durability (in this case, coating film A is transparent). be). In short, according to the present invention, a melamine alkyd paint with good weather resistance is used as the colored layer, and a urethane paint with a high elongation at break is used as the upper and lower layers, thereby reducing the difference in appearance from sheet metal painted parts. The present invention is extremely useful industrially because coated parts with excellent weather resistance and impact resistance can be obtained.
第１図および第２図はそれぞれ公知の塗装部品
の部分縦断面図、第３図は本考案の一実施例を示
す部分縦断面図、第４図は第３図に示した塗装部
品の単独塗膜厚さと衝撃強さとの関係を示す線
図、第５図は単独塗膜の破断伸びと衝撃強さとの
関係を示す線図である。
１……素材、２……アンダコート、３……中
塗、４……上塗、５……トツプコート。
Figures 1 and 2 are partial vertical cross-sectional views of known painted parts, respectively, Figure 3 is a partial vertical cross-sectional view showing an embodiment of the present invention, and Figure 4 is a single painted part shown in Figure 3. FIG. 5 is a diagram showing the relationship between coating film thickness and impact strength. FIG. 5 is a diagram showing the relationship between elongation at break and impact strength of a single coating film. 1...Material, 2...Undercoat, 3...Intermediate coat, 4...Top coat, 5...Top coat.
Claims (1)
ド塗料を使用し、その上下層として破断伸びの大
きいウレタン塗料を使用して塗装したことを特徴
とする樹脂塗装部品。 A resin-coated part characterized in that a melamine alkyd paint with good weather resistance is used as the colored layer, and a urethane paint with high elongation at break is used as the upper and lower layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1673383U JPS59123576U (en) | 1983-02-09 | 1983-02-09 | resin painted parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1673383U JPS59123576U (en) | 1983-02-09 | 1983-02-09 | resin painted parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59123576U JPS59123576U (en) | 1984-08-20 |
| JPH0351013Y2 true JPH0351013Y2 (en) | 1991-10-31 |
Family
ID=30147997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1673383U Granted JPS59123576U (en) | 1983-02-09 | 1983-02-09 | resin painted parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59123576U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019131496A1 (en) * | 2017-12-27 | 2019-07-04 | 紀和化学工業株式会社 | Graphic sheet, production method for same, and use method for same |
-
1983
- 1983-02-09 JP JP1673383U patent/JPS59123576U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59123576U (en) | 1984-08-20 |
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