JPH01194977A - Production of hollow body - Google Patents
Production of hollow bodyInfo
- Publication number
- JPH01194977A JPH01194977A JP63017391A JP1739188A JPH01194977A JP H01194977 A JPH01194977 A JP H01194977A JP 63017391 A JP63017391 A JP 63017391A JP 1739188 A JP1739188 A JP 1739188A JP H01194977 A JPH01194977 A JP H01194977A
- Authority
- JP
- Japan
- Prior art keywords
- hollow body
- blow
- resin
- unevenness
- synthetic resin
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000000049 pigment Substances 0.000 claims abstract description 7
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 7
- 239000000057 synthetic resin Substances 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 8
- 238000000071 blow moulding Methods 0.000 abstract description 13
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- 229920005989 resin Polymers 0.000 description 9
- 239000011347 resin Substances 0.000 description 9
- 239000003973 paint Substances 0.000 description 5
- -1 polybutylene terephthalate Polymers 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 229920001955 polyphenylene ether Polymers 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 239000004727 Noryl Substances 0.000 description 1
- 229920001207 Noryl Polymers 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical group O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007591 painting process Methods 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、熱可塑性の合成樹脂からなる中空体で、特に
これの表面に光沢塗装を施した中空体の製造方法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a hollow body made of a thermoplastic synthetic resin, and particularly to a method for producing a hollow body whose surface is coated with a glossy coating.
従来はブロー成形にて成形された中空体を、そのまま塗
装工程にて光沢塗装していた。Conventionally, hollow bodies formed by blow molding were directly coated with a glossy coating in the painting process.
ブロー成形により成形される中空体の表面には、ブロー
成形時にキャビテイ面とバリスンとの間に発生した空気
や離型時の擦過傷により０．１〜１ ｍｍ程度の凹凸が
ある。このため、ブロー成形した中空体にそのまま光沢
塗装を施すと、この凹凸が鮮明に表われ、折角光沢塗装
したにもかかわらず外表面が見苦しくなるという欠点が
あった。The surface of a hollow body formed by blow molding has irregularities of about 0.1 to 1 mm due to air generated between the cavity surface and the ballisson during blow molding and scratches during mold release. For this reason, if a blow-molded hollow body is directly coated with a glossy coating, the unevenness becomes clearly visible, and the outer surface becomes unsightly despite the glossy coating.
本発明は上記のことにかんがみなされたもので、中空体
表面のブロー成形による凹凸を隠蔽してきれいな光沢表
面を得ることができる中空体の製造方法を提供すること
を目的とするものである。The present invention was conceived in view of the above, and an object of the present invention is to provide a method for manufacturing a hollow body that can hide the unevenness caused by blow molding on the surface of the hollow body and obtain a clean glossy surface.
上記目的を達成するために、本発明に係る中空体の製造
方法は、熱可塑性の合成樹脂にて中空体をブロー成形し
、この中空体の表面に、粒径が０．１〜１０μｍの顔料
を２０〜６０ｗｔ％含有する下塗り塗料を塗布し、つい
で上塗り塗料を塗布した。In order to achieve the above object, the method for manufacturing a hollow body according to the present invention involves blow molding a hollow body using a thermoplastic synthetic resin, and applying a pigment having a particle size of 0.1 to 10 μm on the surface of the hollow body. An undercoat containing 20 to 60 wt% of was applied, and then a topcoat was applied.
下塗り塗料の塗布により、ブロー成形による凹凸が隠蔽
され、その後の上塗り塗料の塗布により、凹凸のない光
沢塗装面が得られる。The application of the undercoat hides the unevenness caused by blow molding, and the subsequent application of the topcoat provides a glossy painted surface with no unevenness.
本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described based on the drawings.
第３図は本発明方法にて製造しようとする部材の一例で
あるスポイラ１を示す。このスポイラ１は乗用車の後部
に風切り用として取付けるものでブロー成形により中空
に形成されている。FIG. 3 shows a spoiler 1 which is an example of a member to be manufactured by the method of the present invention. This spoiler 1 is attached to the rear of a passenger car for wind protection, and is formed hollow by blow molding.
上記スポイラ１は第１図、第２図に示すように、押出ダ
イ２より押出し垂下したバリスン３を分割金型４，５に
て挟着し、ついでパリメン３内に圧力流体を吹き込み、
両全型４，５のそれぞれのキャビティ４ａ、５ａに沿う
形状、すなわち、所定のスポイラ形状に成形し、ついで
両全型４．５を型開きすることにより中空成形される。As shown in FIGS. 1 and 2, the spoiler 1 is made by sandwiching a hanging ballisne 3 extruded from an extrusion die 2 between split molds 4 and 5, and then blowing pressure fluid into the ballison 3.
The molds 4 and 5 are molded into a shape along the respective cavities 4a and 5a, that is, into a predetermined spoiler shape, and then both molds 4.5 are opened to perform hollow molding.
このとき、スポイラ１の縁部の全周のパーティングライ
ン部分にピンチオフによる凹凸が発生するので、この凹
凸を４００〜１０００番のサンドペーパやパフにて削り
取って平滑に仕上げ、その後全体の表面をトリクロロエ
チレンで溶剤処理する。At this time, unevenness occurs due to pinch-off on the entire parting line of the edge of the spoiler 1, so these unevenness are scraped off with 400 to 1000 grit sandpaper or a puff to give a smooth finish, and then the entire surface is polished with trichlorethylene. Treat with solvent.
ついでこのスポイラ１の表面に下塗り塗装６を施す。こ
のときの塗料は、顔料として５μｍの粒径の酸化チタン
を３３ｗｔ％、ウレタンを３８ｗｔ％、シンカを１９
ｗ ｔ％、硬化剤を１０ｗｔ％含有する塗料を用い、３
０μｍの膜厚で下塗り塗布した。Next, an undercoat 6 is applied to the surface of the spoiler 1. The paint at this time contained 33 wt% titanium oxide with a particle size of 5 μm as a pigment, 38 wt% urethane, and 19 wt% sinker.
wt%, using a paint containing 10wt% of curing agent, 3
An undercoat was applied with a film thickness of 0 μm.
その後、上塗り塗装７を施した。この上塗り塗装７は、
アクリル・ウレタン系の塗料当りの空気量（空気使用ｍ
／塗籾の噴出量）を５００〜１５００としてスプレーガ
ンにて膜厚が３０μｍになるように塗装した。After that, top coat 7 was applied. This top coat 7 is
Amount of air per acrylic/urethane paint (air usage m
/ spouting amount of coated rice) was set at 500 to 1500, and the coating was applied using a spray gun to a film thickness of 30 μm.
上記工程によりスポイラ１の表面にブロー成形時に生じ
た凹凸８はなくなり、凹凸のないきれいな光沢表面とな
った。Through the above process, the unevenness 8 that was produced during blow molding on the surface of the spoiler 1 disappeared, resulting in a clean glossy surface without unevenness.
なおこの実施例では上記上塗り塗装７の表面に厚みが２
０μｍのクリヤコート塗装９を施した。このクリヤコー
ト塗装９により中空体の表面の光沢はさらに増すと共に
、塗膜の耐久性が向上された。In this embodiment, the surface of the top coat 7 has a thickness of 2
A clear coating 9 of 0 μm was applied. This clear coat coating 9 further increased the gloss of the surface of the hollow body and improved the durability of the coating film.
上記下塗り塗装６の膜厚は一般に１０〜１００μｍが好
ましい。１０μｍ以下では中、空体表面の凹凸８を隠蔽
できない、またこのときの顔料の含有量は２０〜６０ｗ
ｔ％が好ましく、２０ｗｔ％以下では隠蔽性が不充分で
あり、６０ｗｔ％以上では中空体表面に対する密着性が
低下し剥離することがある。The thickness of the undercoat 6 is generally preferably 10 to 100 μm. If it is less than 10 μm, the unevenness 8 on the surface of the hollow body cannot be hidden, and the pigment content at this time is 20 to 60 W.
t% is preferable; if it is less than 20 wt%, the hiding property is insufficient, and if it is more than 60 wt%, the adhesion to the surface of the hollow body may decrease and peeling may occur.
また粒径が０．１〜１０μｍの顔料とは、酸化チタン、
カオリンクレー、けい酸カルシウム、酸化鉄、水酸化ア
ルミニウム、炭酸カルシウム、炭酸マグネシウム、タル
ク、二硫化モリブデンのなかから選択されるもので、そ
の粒径が０．１μｍ以下では凹凸の隠蔽効果が充分では
なく、１０μｍ以上では上塗り塗装面に突出してしまう
。In addition, pigments with a particle size of 0.1 to 10 μm include titanium oxide,
It is selected from kaolin clay, calcium silicate, iron oxide, aluminum hydroxide, calcium carbonate, magnesium carbonate, talc, and molybdenum disulfide, and if the particle size is 0.1 μm or less, the effect of hiding unevenness is not sufficient. If it is 10 μm or more, it will protrude onto the top coated surface.
一方上塗り塗装時における塗料当りの空気量は５００以
下では塗装表面が荒れて光沢表面が得られず、１５００
以上では塗料の付着が悪く、生産性が悪くなる。On the other hand, if the amount of air per paint during top coating is less than 500, the painted surface will become rough and a glossy surface cannot be obtained;
If this is the case, the adhesion of the paint will be poor and productivity will be poor.
本発明方法にて製造される中空体の構成材料はブロー成
形されるものであればどんな合成樹脂でもよいが、特に
曲げ弾性率（Ａ Ｓ ＴＭＤ ７９０）が１０，０００
ｋｇ／ｃ−以上の機械曲弾の高いものが好ましい。The material constituting the hollow body manufactured by the method of the present invention may be any synthetic resin as long as it can be blow molded, but in particular, a material with a flexural modulus (AS TMD 790) of 10,000
A mechanically curved bullet with a weight of kg/c- or more is preferable.
この種の合成樹脂としては、ポリフェニレンエーテル樹
脂、ポリカーボネート樹脂、ポリブチレンテレフタレー
ト樹脂、ポリサルフォン樹脂、ポリエーテルサルフォン
樹脂、ポリエーテルエーテルケトン樹脂、芳香族ポリエ
ステル樹脂、ポリアセタール樹脂、ポリプロピレン樹脂
、ポリエチレンテレフタレート樹脂が該当する。This type of synthetic resin includes polyphenylene ether resin, polycarbonate resin, polybutylene terephthalate resin, polysulfone resin, polyether sulfone resin, polyether ether ketone resin, aromatic polyester resin, polyacetal resin, polypropylene resin, and polyethylene terephthalate resin. Applicable.
上記本発明方法の実施例で示したスポイラ１は、ポリフ
ェニレンエーテル樹脂からなる「ノリル９００１Ｊ
（エンジニアリングプラスチック社製）を用いた。これ
の曲げ弾性率は２１．０００ｋｇ ／ ｃ−である。The spoiler 1 shown in the above embodiment of the method of the present invention is made of "Noryl 9001J" made of polyphenylene ether resin.
(manufactured by Engineering Plastics Co., Ltd.) was used. Its flexural modulus is 21.000 kg/c-.
本発明方法によれば、中空体表面のブロー成形による凹
凸が隠蔽されてきれいな光沢表面が得られる。According to the method of the present invention, irregularities on the surface of the hollow body due to blow molding are hidden, and a beautiful glossy surface can be obtained.
第１図、第２図はブロー成形工程を示す断面図、第３図
は中空体の一例であるスポイラを示す斜視図、第４図は
塗装前の中空体の拡大断面図、第５図は塗装後の中空体
の拡大断面図である。
１はスポイラ、４．５は分割金型、４ａ、 ５ａはキ
ャビティ、６は下塗り塗装、７は上塗り塗装。Figures 1 and 2 are cross-sectional views showing the blow molding process, Figure 3 is a perspective view showing a spoiler, which is an example of a hollow body, Figure 4 is an enlarged cross-sectional view of the hollow body before painting, and Figure 5 is a cross-sectional view showing the blow molding process. FIG. 3 is an enlarged sectional view of the hollow body after painting. 1 is a spoiler, 4.5 is a split mold, 4a and 5a are cavities, 6 is an undercoat, and 7 is a topcoat.
Claims (1)
面に、粒径が０．１〜１０μｍの顔料を２０〜６０ｗｔ
％含有する下塗り塗料を塗布し、ついで上塗り塗料を塗
布したことを特徴とする中空体の製造方法。A hollow body is blow-molded with synthetic resin, and 20 to 60 wt of pigment with a particle size of 0.1 to 10 μm is applied to the surface of the hollow body.
1. A method for manufacturing a hollow body, characterized in that an undercoat containing % of the base coat is applied, and then a topcoat is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63017391A JPH0730186B2 (en) | 1988-01-29 | 1988-01-29 | Hollow body manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63017391A JPH0730186B2 (en) | 1988-01-29 | 1988-01-29 | Hollow body manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01194977A true JPH01194977A (en) | 1989-08-04 |
| JPH0730186B2 JPH0730186B2 (en) | 1995-04-05 |
Family
ID=11942698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63017391A Expired - Lifetime JPH0730186B2 (en) | 1988-01-29 | 1988-01-29 | Hollow body manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0730186B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56150465A (en) * | 1980-04-23 | 1981-11-20 | Hajime Okazaki | Decorative board |
| JPS6190773A (en) * | 1984-10-09 | 1986-05-08 | Koatsu Kako Kk | Decorative finishing method of plastic molded article |
-
1988
- 1988-01-29 JP JP63017391A patent/JPH0730186B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56150465A (en) * | 1980-04-23 | 1981-11-20 | Hajime Okazaki | Decorative board |
| JPS6190773A (en) * | 1984-10-09 | 1986-05-08 | Koatsu Kako Kk | Decorative finishing method of plastic molded article |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0730186B2 (en) | 1995-04-05 |
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