JPS6241796B2 - - Google Patents
Info
- Publication number
- JPS6241796B2 JPS6241796B2 JP12701882A JP12701882A JPS6241796B2 JP S6241796 B2 JPS6241796 B2 JP S6241796B2 JP 12701882 A JP12701882 A JP 12701882A JP 12701882 A JP12701882 A JP 12701882A JP S6241796 B2 JPS6241796 B2 JP S6241796B2
- Authority
- JP
- Japan
- Prior art keywords
- small protrusions
- masking tape
- masking
- painted
- resin molded
- 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
- 230000000873 masking effect Effects 0.000 claims description 43
- 238000000576 coating method Methods 0.000 claims description 25
- 239000011248 coating agent Substances 0.000 claims description 22
- 238000010422 painting Methods 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 2
- 239000003973 paint Substances 0.000 description 13
- 229920003002 synthetic resin Polymers 0.000 description 12
- 239000000057 synthetic resin Substances 0.000 description 12
- 238000001035 drying Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000002987 primer (paints) Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009760 electrical discharge machining Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
Description
【発明の詳細な説明】
この発明は、マスキグシートを用いて樹脂成形
品を部分塗装するマスキング塗装法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a masking coating method for partially coating a resin molded article using a masking sheet.
例えば、第１図に示すように、顧客の要望に応
じて、ボデー色とは異なつた色、例えば黒色で、
自動車１の側面および前面、後面に一連のアクセ
ントライン２を設ける場合がある。リヤーバンパ
として、合成樹脂製のバンパ３を用いる場合に
は、サイドプロテクタモール４に連続したアクセ
ントライン２の一部を形成する部分５を残して、
他の部分６にはボデー色を塗装するようにしてい
る。 For example, as shown in Figure 1, depending on the customer's request, the body color may be different from the body color, such as black.
A series of accent lines 2 may be provided on the side, front, and rear surfaces of the automobile 1. When using a synthetic resin bumper 3 as the rear bumper, leave a portion 5 that forms part of the accent line 2 continuous with the side protector molding 4,
The other parts 6 are painted the body color.
上記のように合成樹脂成形品に部分塗装を施す
場合、従来においては、第２図に示すように、
合成樹脂成形品７の表面７ａ上にマスキングテー
プ８を貼り付けたうえで、第２図に示すように
塗装を施し、塗膜９の焼付け乾燥後に、第２図
に示すように、マスキングテープ８をはぎ取つて
合成樹脂表面の素地を露出させるようにしてい
た。 When partially painting a synthetic resin molded product as described above, conventionally, as shown in Figure 2,
A masking tape 8 is pasted on the surface 7a of the synthetic resin molded product 7, and then painted as shown in FIG. 2. After the coating film 9 is baked and dried, the masking tape 8 The synthetic resin surface was exposed by peeling it off.
しかしながら、従来の方法では、以下の諸点に
おいて種々の不具合があつた。 However, the conventional method has had various problems in the following points.
(イ) マスキングテープの貼付け時、所謂アール止
まり等においては、明確な線がないのでマスキ
ングテープが曲がりやすい。(b) When applying masking tape, the masking tape tends to bend because there is no clear line at the so-called round stop.
(ロ) マスキングテープの剥離時には、相当にゆつ
くりと剥がしていかないと、マスキングテープ
の側縁や端縁において合成樹脂成形品に塗装し
た塗膜に剥離を生ずる。(b) When removing the masking tape, if it is not removed very slowly, the coating on the synthetic resin molded product will peel off at the side edges and edges of the masking tape.
(ハ) したがつて、仕上がり外観において、作業者
による“バラツキ”があり、所謂見切り線がシ
ヤープに出ない。(c) Therefore, there are "variations" in the finished appearance depending on the worker, and so-called parting lines do not appear sharply.
(ニ) 塗装の耐久性において、塗膜の端縁が素地上
に段状に露出しているため、物が引掛りやす
く、引掛つた場合には剥離が生ずる。(d) Regarding the durability of the coating, because the edge of the coating film is exposed in steps on the substrate, objects are likely to get caught on it, and if it gets caught, peeling will occur.
(ホ) さらに、マスキングテープの剥離作業は、塗
膜の性質として低温時には塗膜の切れが悪くな
る即ち破断強さが大きくなるため、乾燥炉から
取り出した直後の温間時に行なう必要があり、
作業性が悪い。(e) Furthermore, the peeling work of the masking tape must be done when the masking tape is warm immediately after being removed from the drying oven, as the nature of the paint film makes it difficult to cut at low temperatures, i.e., the breaking strength increases.
Poor workability.
この発明は、かかる従来の問題を解消すべくな
されたものであつて、実施が容易で従来の種々の
問題を一挙に解消することができるマスキング塗
装法を提供することを目的としている。 The present invention was made to solve these conventional problems, and an object of the present invention is to provide a masking coating method that is easy to implement and can solve various conventional problems all at once.
このため、この発明においては、被塗物である
合成樹脂成形品表面の塗装面と非塗装面との間の
塗装見切り線に沿つて、合成樹脂成形品の成形時
に小突条を合成樹脂成形品と一体に設けておき、
マスキングシートを上記小突条に沿わせつつ非塗
装面に貼り付け、その後に、吹付け塗装、塗膜の
焼付け乾燥を順次行ない、焼付け乾燥後にマスキ
ングシートを剥ぎ取るようにしたことを基本的な
特徴としている。 For this reason, in this invention, small protrusions are molded into synthetic resin during molding of the synthetic resin molded product along the painting parting line between the painted surface and the non-painted surface of the surface of the synthetic resin molded product to be coated. Install it together with the product.
The basic idea is to attach a masking sheet to the non-painted surface along the above-mentioned small protrusions, then spray paint and bake dry the paint film in sequence, and then peel off the masking sheet after baking and drying. It is a feature.
以下、図示の実施例について本発明方法を具体
的に説明する。 The method of the present invention will be specifically described below with reference to the illustrated embodiments.
まず、従来法を示す第２図，，に対応さ
せた第３図，，について本発明方法を説明
すると、第３図に示すように、本発明において
は、合成樹脂成形品２０の表面の塗装面２１と非
塗装面２２とを区画する所謂塗装見切り部２３
に、鋭角の断面を有する小突条２４を予じめ一体
に設けておく。被塗物である合成樹脂成形品２０
に小突条２４を一体成形する手段としては、例え
ば成形型の成形面に放電加工等により小突条２４
の形状と対応する凹部を形成し、次にこの成形型
を用いて合成樹脂成形品２０を成形し、この時に
上記凹部で塗装見切り部２３に対応して小突条２
４が一体成形される。 First, the method of the present invention will be explained with reference to FIG. 3, which corresponds to FIG. 2, which shows the conventional method.As shown in FIG. A so-called painting parting part 23 that separates the surface 21 and the non-painted surface 22
A small protrusion 24 having an acute-angled cross section is previously provided integrally with the structure. Synthetic resin molded product 20 to be coated
As a means of integrally molding the small protrusions 24, for example, the small protrusions 24 can be formed on the molding surface of the mold by electrical discharge machining or the like.
A concave portion corresponding to the shape of is formed, and then a synthetic resin molded product 20 is molded using this mold, and at this time, small protrusions 2 are formed in the concave portion corresponding to the painted parting portions 23.
4 are integrally molded.
そして、マスキングシート（以下、マスキング
テープと称する）２５は、この小突条２４をガイ
ドラインとして、その端縁２５ａが小突条２４に
一致するか、図示の如く、僅かな間隔をおいて平
行するように、非塗装面２２上に貼り付ける。こ
の場合の貼付け作業は、小突条２４をガイドライ
ンとして行なえるためマスキングテープ２５を正
確かつ容易に貼り付けることができる。 Then, the masking sheet (hereinafter referred to as masking tape) 25 uses the small protrusions 24 as a guideline, and its edge 25a is aligned with the small protrusions 24 or is parallel to the small protrusions 24 with a slight interval as shown in the figure. Paste it on the non-painted surface 22 as shown. In this case, the masking tape 25 can be applied accurately and easily because the pasting operation can be performed using the small protrusions 24 as a guideline.
上記のように、マスキングテープ２５を貼り付
けた後は、第３図に示すように、吹付け塗装を
行ない、次いで、乾燥炉（図示せず）内におい
て、塗膜２６の焼付け乾燥を行なう。 After applying the masking tape 25 as described above, spray painting is performed as shown in FIG. 3, and then the coating film 26 is baked and dried in a drying oven (not shown).
上記の塗装は、第１図に示した自動車のバンパ
の場合には、塩素化ポリオレフイン系塗料を用い
たプライマ塗装と、２液ウレタン系の塗料を用い
た上塗り塗装とを行なう。この場合の塗膜厚は、
プライマ塗装で20μ、上塗り塗装で40μ程度とす
ることが好ましい。 In the case of the automobile bumper shown in FIG. 1, the above-mentioned painting is performed by a primer coating using a chlorinated polyolefin paint and a top coating using a two-component urethane paint. In this case, the coating thickness is
It is preferable to use a primer coating with a thickness of 20μ and a topcoat with a thickness of about 40μ.
焼付け乾燥後は、常温まで低下させた状態で、
第３図に示すように、マスキングテープ２５を
剥ぎ、マスキングテープ２５上の乾燥塗膜２６を
取り除く。この場合、小突条２４は、先端が尖つ
ており、第３図に示したように、乾燥塗膜２６
の断面で見れば明らかなように、小突条２４によ
つて乾燥塗膜２６には一種のノツチが切り込まれ
た状態となつている。このため、マスキングテー
プ２５を剥いで行くと、乾燥塗膜２６はこのノツ
チ部分で確実に切れ、剥離は小突条２４を越えて
塗装面２１側の塗膜２６に及ぶことはない。した
がつて、乾燥塗膜２６は小突条２４によつて縁取
りされた状態で塗装面２１上に残る。 After baking and drying, lower the temperature to room temperature.
As shown in FIG. 3, the masking tape 25 is peeled off and the dried coating film 26 on the masking tape 25 is removed. In this case, the small protrusions 24 have sharp tips, and as shown in FIG.
As is clear from the cross section, a kind of notch is cut into the dried coating film 26 by the small protrusions 24. Therefore, when the masking tape 25 is peeled off, the dried paint film 26 is reliably cut at this notch, and the peeling does not extend beyond the small protrusions 24 to the paint film 26 on the painted surface 21 side. Therefore, the dried coating film 26 remains on the painted surface 21 in a state bordered by the small protrusions 24.
なお、マスキングテープ２５の端縁２５ａと小
突条２４との間の塗膜部分は、乾燥塗膜２６の有
する破断強さのため、マスキングテープ２５の剥
離に際して、マスキングテープ２５上の乾燥塗膜
２６と一緒に持ち上げられ、膜厚が最小となる小
突条２４の頂点部において確実に破断される。す
なわち、マスキングテープ２５の端縁２５ａが小
突条２４から５mm以内の範囲で離れていても、小
突条２４のノツチ効果により小突条２４から塗膜
２６が確実に破断される。 Note that the dry coating film 26 between the edge 25a of the masking tape 25 and the small protrusions 24 has a breaking strength, so when the masking tape 25 is peeled off, the dry coating film on the masking tape 25 is 26, and is reliably broken at the apex of the small protrusion 24 where the film thickness is the minimum. That is, even if the edge 25a of the masking tape 25 is separated from the small protrusions 24 by within 5 mm, the coating film 26 is reliably broken from the small protrusions 24 due to the notch effect of the small protrusions 24.
上記小突条２４は、かかる意味で乾燥塗膜２６
の通常部分の膜厚と同程度かそれ以上の高さとす
ることが好ましく、上記の乾燥塗膜２６の例で
は、その高さを30〜200μの範囲とすればよい。
すなわち、塗膜の厚さの1/2〜２倍の高さの範囲
であればよい。小突条２４の高さを100μ程度と
すると、肉眼で確実に視覚できるので、マスキン
グテープ２５の貼付け時に、目でみながらマスキ
ングテープ２５を小突条２４に沿つて貼り付ける
ことができるので有利である。 In this sense, the small protrusions 24 are the dry coating film 26.
It is preferable that the height is equal to or greater than the thickness of the normal portion of the dry coating film 26, and in the above example of the dry coating film 26, the height may be in the range of 30 to 200μ.
That is, the height may be within a range of 1/2 to 2 times the thickness of the coating film. If the height of the small protrusions 24 is about 100 μm, it can be seen reliably with the naked eye, so when applying the masking tape 25, it is advantageous because the masking tape 25 can be applied along the small protrusions 24 while visually observing the masking tape 25. It is.
また、小突条２４の断面は、前述した如く鋭角
の頂部を有する形状とすることが、乾燥塗膜２６
の切れをよくするうえで好ましい。 Further, the cross section of the small protrusion 24 is preferably shaped to have an acute-angled apex as described above.
It is preferable for cutting well.
次に、本発明にかかるマスキング塗装法を、自
動車の合成樹脂製リヤ・バンパに適用する場合に
ついて説明する。 Next, a case will be described in which the masking coating method according to the present invention is applied to a synthetic resin rear bumper of an automobile.
いま、第４図および第５図を参照して、リヤ・
バンパ３０は、上面３０ａと垂直面３０ｂとの間
の折曲部３１および垂直面３０ｂのほぼ中間に設
けた凹条３２に塗装見切り部Ａ，Ｂを設定すると
すると、これら塗装見切り部Ａ，Ｂは、例えば、
第６図に示すように、塗装見切り部Ｂを設定すべ
き前記凹条３２の底面上に一体に形成した小突条
３３によつて画定し、これら塗装見切り部Ａ，Ｂ
間には、前述したようにマスキングテープ３４を
貼り付け、その後、プライマ塗装、上塗り塗装、
焼付け乾燥を施し、作業に支障のない温度まで低
下させた後、マスキングテープ３４を剥ぎ取れば
よい。 Now, referring to Figures 4 and 5, the rear
If the bumper 30 has painted parting parts A and B in the bending part 31 between the upper surface 30a and the vertical surface 30b and in the groove 32 provided approximately in the middle of the vertical surface 30b, these painted parting parts A and B For example,
As shown in FIG. 6, a painting parting part B is defined by a small protrusion 33 integrally formed on the bottom surface of the grooved part 32 to be set, and these painting parting parts A, B
In between, apply masking tape 34 as described above, then apply primer coating, top coating,
The masking tape 34 may be peeled off after baking and drying to lower the temperature to a temperature that does not interfere with the work.
なお、自動車部品についていえば、サイドプロ
テクターモール（第１図参照）の塗装にも本発明
方法を適用することができる。 Regarding automobile parts, the method of the present invention can also be applied to painting side protector moldings (see FIG. 1).
以上の説明から明らかなように、この発明によ
れば、塗装面と非塗装面との間に予じめ小突条を
形成して、これを利用したから、前述した従来の
マスキング塗装法に比して以下の如き利点が得ら
れる。 As is clear from the above explanation, according to the present invention, small protrusions are formed in advance between the painted surface and the non-painted surface, and this is used, so that the conventional masking painting method described above can be used. In comparison, the following advantages can be obtained.
(イ) マスキングテープの貼付け時には、小突条が
ガイドラインとなるため、ガイドラインが視覚
でき、マスキングテープを貼り付けやすい。(b) When applying the masking tape, the small protrusions serve as a guideline, so the guideline is visible and it is easy to apply the masking tape.
(ロ) マスキングテープの剥離に際して乾燥塗膜に
は小突条によるノツチが形成されているため、
マスキングテープを早い速度で剥離しても、乾
燥塗膜は小突条を境に確実に切れ、塗装面側の
塗膜には剥離を生ずることはない。(b) When removing the masking tape, the dried paint film has notches formed by small protrusions, so
Even if the masking tape is peeled off at a high speed, the dried paint film will be reliably cut along the small protrusions, and the paint film on the painted side will not peel off.
(ハ) このため、仕上り外観において、作業者によ
らず常にシヤープな塗装見切り線が得られる。(c) Therefore, sharp paint separation lines can always be obtained in the finished appearance regardless of the operator.
(ニ) また、塗膜の端縁は、小突条によつて保護さ
れており、物が引掛るおそれがない。(d) Additionally, the edges of the coating film are protected by small protrusions, so there is no risk of objects getting caught.
(ホ) さらに、塗膜の切れは、小突条によるノツチ
によつて確実に保証されるから、塗膜が常温ま
で低下した後においても、マスキングテープを
問題なく剥ぎ取ることができ、作業性をも向上
できる。(e) In addition, the notches formed by the small protrusions ensure that the paint film will not break, so even after the paint film has cooled to room temperature, the masking tape can be removed without any problems, making work easier. can also be improved.
第１図はマスキング塗装の一例を示す自動車の
後部側斜視図、第２図，，は従来のマスキ
ング塗装工程を順次に示す工程説明図、第３図
，，は本発明にかかるマスキング塗装工程
を順次に示す工程説明図、第４図は部分塗装すべ
きリヤ・バンパの斜視図、第５図は第４図のＡ−
Ａ線方向断面図、第６図は第５図の小円部分の拡
大断面図である。
２０……合成樹脂成形品、２１……塗装面、２
２……非塗装面、２３……塗装見切り部、２４…
…小突条、２５……マスキングテープ。
Fig. 1 is a perspective view of the rear side of an automobile showing an example of masking painting, Fig. 2, . 4 is a perspective view of the rear bumper to be partially painted, and FIG. 5 is a diagram showing the steps A- in FIG.
6 is an enlarged sectional view of the small circular portion of FIG. 5. 20...Synthetic resin molded product, 21...Painted surface, 2
2... Non-painted surface, 23... Painted parting part, 24...
...Small ridges, 25...Masking tape.
Claims (1)
との塗装見切り部に、樹脂成形品の成形時に小突
条を一体形成し、この樹脂成形品の小突条にマス
キングシートの縁部をほぼ沿わせて該マスキング
シートを樹脂成形品の非塗装面に貼り付けてマス
キングし、その後、上記樹脂成形品に吹付け塗装
し、塗膜の焼付け乾燥後に上記マスキングシート
を剥ぎ取るようにして樹脂成形品を部分塗装する
ことを特徴とするマスキング塗装法。1. Small protrusions are integrally formed at the coating separation between the painted and non-painted surfaces of the resin molded product to be coated when the resin molded product is molded, and the edges of the masking sheet are attached to the small protrusions of the resin molded product. The masking sheet is applied to the non-painted surface of the resin molded product for masking, with the parts almost aligned, and then the resin molded product is spray-painted, and after the coating film is baked and dried, the masking sheet is peeled off. A masking painting method characterized by partially painting a resin molded product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12701882A JPS5916567A (en) | 1982-07-20 | 1982-07-20 | Masked painting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12701882A JPS5916567A (en) | 1982-07-20 | 1982-07-20 | Masked painting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5916567A JPS5916567A (en) | 1984-01-27 |
| JPS6241796B2 true JPS6241796B2 (en) | 1987-09-04 |
Family
ID=14949647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12701882A Granted JPS5916567A (en) | 1982-07-20 | 1982-07-20 | Masked painting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5916567A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6218219A (en) * | 1985-03-19 | 1987-01-27 | Honda Motor Co Ltd | Resin molding and mold |
| JPS61216775A (en) * | 1985-03-19 | 1986-09-26 | Honda Motor Co Ltd | Method for partially coating resin molded product |
| JPS61245870A (en) * | 1985-04-25 | 1986-11-01 | Mitsui Toatsu Chem Inc | Painting masking method for beautifully developing parting part |
| DE102018210215B4 (en) * | 2018-06-22 | 2022-02-03 | Magna Exteriors Gmbh | Process for producing a plastic component, and plastic component and processing system |
-
1982
- 1982-07-20 JP JP12701882A patent/JPS5916567A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5916567A (en) | 1984-01-27 |
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