JPH0761676B2 - Hollow body manufacturing method - Google Patents
Hollow body manufacturing methodInfo
- Publication number
- JPH0761676B2 JPH0761676B2 JP63017394A JP1739488A JPH0761676B2 JP H0761676 B2 JPH0761676 B2 JP H0761676B2 JP 63017394 A JP63017394 A JP 63017394A JP 1739488 A JP1739488 A JP 1739488A JP H0761676 B2 JPH0761676 B2 JP H0761676B2
- Authority
- JP
- Japan
- Prior art keywords
- hollow body
- parting line
- blow molding
- resin
- spoiler
- 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 - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000000071 blow moulding Methods 0.000 claims description 16
- 229920003002 synthetic resin Polymers 0.000 claims description 14
- 239000000057 synthetic resin Substances 0.000 claims description 14
- 239000003973 paint Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 description 11
- 239000011347 resin Substances 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 229920006038 crystalline resin Polymers 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- -1 polybutylene terephthalate Polymers 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 229920001955 polyphenylene ether Polymers 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004727 Noryl Substances 0.000 description 1
- 229920001207 Noryl Polymers 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 244000137852 Petrea volubilis Species 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
- 239000003082 abrasive agent Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229920006127 amorphous resin Polymers 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000003085 diluting agent Substances 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
- 238000009499 grossing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000049 pigment Substances 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
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、ブロー成形により成形される合成樹脂からな
る中空体で、特に塗装仕上げ後の表面を平滑にすること
ができる中空体の製造方法に関するものである。Description: TECHNICAL FIELD The present invention relates to a method for producing a hollow body formed of a synthetic resin by blow molding, which is capable of smoothing the surface after coating, in particular. It is about.
ブロー成形により成形される合成樹脂からなる中空体
は、その成形技術上、中空体の表面に、分割金型のピン
チオフによるパーティングラインが生じる。そしてこの
パーティングライン部分には、ピンチオフ時の圧力の不
均一による毛ばだちのヒケによる凹凸が発生しやすい。The hollow body made of synthetic resin formed by blow molding has a parting line on the surface of the hollow body due to the pinch-off of the split mold due to its molding technique. And, in this parting line portion, unevenness due to sink marks of fluffs is likely to occur due to uneven pressure during pinch-off.
特にスポイラ等の構造部品の場合、曲げ弾性率が10,000
kg/cm2以上の剛性の高い合成樹脂が使用されるが、一般
にこの種の樹脂は非晶性樹脂や、高結晶性樹脂と呼ば
れ、ヒケが大きく表われる。Especially for structural parts such as spoilers, the bending elastic modulus is 10,000.
A synthetic resin having a high rigidity of kg / cm 2 or more is used, but this type of resin is generally called an amorphous resin or a highly crystalline resin, and a sink mark is largely shown.
そして上記高結晶性樹脂を用いて例えば横断面形状が平
で、かつ長尺物であるスポイラをブロー成形により中空
成形した場合、これのパーティングライン部分で1.5mm
程度と比較的大きなヒケが生じることがある。When the spoiler, which has a flat cross-section and is long, is blow-molded by blow molding using the above-mentioned highly crystalline resin, the parting line portion of the spoiler is 1.5 mm.
A relatively large sink mark may occur.
スポイラ等の中空体に塗装を施す場合、上記パーティン
グライン部分に生じる毛ばだちやヒケをそのままにして
塗装すると外観が見苦しい仕上げになる。When coating a hollow body such as a spoiler, the appearance will be unsightly if coating is performed with the fluff and sink marks generated in the parting line portion as it is.
このため、従来は、塗装工程の前に、上記毛ばだちやヒ
ケにより生じる凹凸の高い部分をナイフにて切除して平
滑に仕上げてから塗装している。For this reason, conventionally, prior to the coating step, a portion having high unevenness caused by the fluff and sink marks is cut off with a knife to finish the surface smooth, and then the coating is performed.
合成樹脂製の中空体の毛ばだちやヒケによる凹凸の高い
部分をナイフで平らに仕上げる作業は極めて難かしく、
ともすると削りすぎて穴をあけてしまうことがあり、ま
た上記凹凸の切除のための中空体の本体をも削り取らな
ければならないため、所期の仕上げ面を得るためには熟
練した職人芸が要求されている。It is extremely difficult to flatten a synthetic resin hollow body with knives or burrs by using a knife.
In some cases, it may be too shaved to make holes, and since the body of the hollow body for cutting the above unevenness must also be shaved off, skilled craftsmanship is required to obtain the desired finished surface. Has been done.
本発明は上記のことにかんがみなされたもので、パーテ
ィングライン部分に生じる毛ばだちやヒケの影響が中空
体の本体側におよぶことがなくなり、従って毛ばだちや
ヒケによる凹凸の高い部分を除去しても中空体の肉厚が
薄くなったり、穴があくことがないようにすることがで
き、またこの部分の平滑仕上げを熟練者によることなく
容易に、かつ極めて平滑な状態に仕上ることができるよ
うにした。The present invention has been conceived in view of the above, and the influence of fluff and sink marks generated in the parting line portion does not affect the main body side of the hollow body, and therefore, a portion with high unevenness due to fluff and sink marks Even if it is removed, it is possible to prevent the thickness of the hollow body from becoming thin and to prevent the formation of holes, and it is also possible to finish the smooth finish of this part easily and extremely smoothly without the need for an expert. I was able to do it.
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、ブロー成形にて成形される合成樹脂からなる中
空体で、かつブロー成形後その表面に塗装を施すように
した中空体の製造方法において、ブロー成形時に、中空
体のパーティングライン部分に、他の部分より3mm程度
高くした突条を全周にわたって形成し、ブロー成形後、
この突条をサンドペーパーやバフ等の柔軟性研磨材にて
パーティングラインに沿って研磨して平滑に仕上げ、そ
の後表面全体に塗装を施すようにした。In order to achieve the above object, the method for producing a hollow body according to the present invention is a hollow body made of a synthetic resin molded by blow molding, and a hollow body formed by applying a coating to the surface after blow molding. In the manufacturing method, at the time of blow molding, in the parting line part of the hollow body, a ridge that is about 3 mm higher than other parts is formed over the entire circumference, and after blow molding,
The ridges were polished along the parting line with a flexible abrasive such as sandpaper or buff to finish the surface smooth, and then the entire surface was coated.
ブロー成形時において、パーティングライン部分にこれ
の全周にわたって他の部分より3mm程度高い突条を形成
したので、パーティングライン部分に生じた毛ばだちや
ヒケが突条に生じることになり、中空体の本体側にこの
毛ばだちやヒケの影響がおよばす、従って毛ばだちやヒ
ケによる凹凸の高い部分を除去しても中空体の肉厚が薄
くなったり、穴があくことはなくなる。また上記突条は
柔軟性研磨材にて研磨される際にこの突条がパーティン
グラインの全周に設けられていることにより、突条以外
の部分を研磨することなく、突条だげが容易に研磨され
る。At the time of blow molding, a ridge higher than other parts by about 3 mm was formed in the parting line part over the entire circumference of the parting line, so fluffs and sink marks generated in the parting line part will occur in the ridge, The fluff and sink marks have an effect on the body side of the hollow body, so the hollow body will not be thinned or punctured even if the parts with high irregularities due to the fluff and sink marks are removed. . Further, since the ridges are provided on the entire circumference of the parting line when the ridges are polished by the flexible abrasive, the ridges are not rubbed without polishing the portions other than the ridges. It is easily polished.
本発明の実施例を図面に基づいて説明する。 An embodiment of the present invention will be described with reference to 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は乗用車の屋根
に風切り用として取付けるもので、第４図に示すように
合成樹脂にて中空に成形されている。FIG. 3 shows a spoiler 1 which is an example of a member to be manufactured by the method of the present invention. The spoiler 1 is attached to the roof of a passenger car for windbreak, and is formed of synthetic resin in a hollow shape as shown in FIG.
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パリスン３を分割金型4,5にて
挾着し、ついでパリスン３内に圧力流体を吹き込み、両
金型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、ついで両金型4,5
を型開きすることにより中空成形される。As shown in FIG. 1 and FIG. 2, the spoiler 1 holds the parison 3 extruded from the extrusion die 2 and held by the split dies 4 and 5 and then blows a pressure fluid into the parison 3 so that both the halves are pressed. The molds 4 and 5 are shaped along the respective cavities 4a and 5a, that is, formed into a predetermined spoiler shape, and then both molds 4,5
Hollow molding is performed by opening the mold.
このとき、第４図、第５図に示すように、スポイラ１の
縁部の全周のパーティングライン部分に高さが3mm程度
の突条６を形成する。これにより、パーティングライン
部分に生じるヒケはこの突条６に生じて、スポイラ１の
本体側にヒケが生じるのが防がれる。At this time, as shown in FIGS. 4 and 5, a ridge 6 having a height of about 3 mm is formed on the parting line portion on the entire circumference of the edge portion of the spoiler 1. As a result, it is possible to prevent the sink marks generated in the parting line portion from being generated in the protrusions 6 and causing the sink marks on the main body side of the spoiler 1.
このとき、上記突条６の高さが3mm程度と比較高いこと
により、中空体を構成する合成樹脂に高結晶性樹脂を用
いても、これのパーティングライン部分でのヒケはスポ
イラ１の本体側にまで影響されない。At this time, since the height of the ridge 6 is relatively high at about 3 mm, even if a highly crystalline resin is used as the synthetic resin forming the hollow body, the sink mark at the parting line portion of the synthetic resin is the main body of the spoiler 1. Not affected by the side.
上記のようにして成形したスポイラ１のパーティングラ
イン部分の突条６は、第７図に示すような、多数枚のサ
ンドペーパ７を放射状に束ねたブラシ状のサンドペーパ
輪８を第５図に示すように、回転させて接触することに
より、研磨されて削除される。The protrusion 6 of the parting line portion of the spoiler 1 formed as described above shows a brush-shaped sandpaper wheel 8 in which a large number of sandpapers 7 are radially bundled, as shown in FIG. As it is rotated and brought into contact, it is polished and removed.
このとき、上記サンドペーパ輪８は、サンドペーパ７の
目が異なるものを複数用意しておき、例えば、第１工程
では400番のサンドペーパを用いたもので研磨し、第２
工程で1000番のサンドペーパを用いたもので研磨する。
これにより上記突条件６の高さが500μｍ以下になるま
で削除され、パーティングライン部分が平滑に仕上げら
れる。At this time, a plurality of sandpaper wheels 8 having different eyes of the sandpaper 7 are prepared. For example, in the first step, sandpaper No. 400 is used for polishing,
In the process, sand with No. 1000 sandpaper.
As a result, the height of the collision condition 6 is reduced to 500 μm or less, and the parting line portion is finished smooth.
上記のようにして表面仕上げされたスポイラ１は、その
後、表面をトリクロロエチレン等の溶剤で処理してか
ら、第６図に示すようにスプレーガン９にて、顔料及び
希釈材（シンナ）を混合したアクリルウレタン系の２液
型塗料10を塗布する。After the surface of the spoiler 1 finished as described above is treated with a solvent such as trichlorethylene, the pigment and the diluent (thinner) are mixed with a spray gun 9 as shown in FIG. Apply acrylic urethane two-component paint 10.
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（ASTMD790）が10,000kg/cm2以上の機械的強
の高いものが好ましい。The constituent material of the hollow body produced by the method of the present invention may be any synthetic resin as long as it can be blow-molded, but particularly one having a high bending strength (ASTMD790) of 10,000 kg / cm 2 or higher mechanical strength. Is preferred.
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、ポリオキシメチレン
樹脂、ポリプロピレン樹脂、ポリエチレンテレフタレー
ト樹脂等の該当する。Examples of this type of synthetic resin include polyphenylene ether resin, polycarbonate resin, polybutylene terephthalate resin, polysulfone resin, polyether sulfone resin, polyether ether ketone resin, aromatic polyester resin, polyacetal resin, polyoxymethylene resin, polypropylene resin. , Polyethylene terephthalate resin, etc.
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9001」（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/cm2である。As the spoiler 1 shown in the embodiment of the method of the present invention, "Noryl 9001" (manufactured by Engineering Plastics Co., Ltd.) made of polyphenylene ether resin was used. The flexural modulus of this is 21,000 kg / cm 2 .
また上記実施例では突条６を削除する手段としてサンド
ペーパ輪８を用いた例を示したが、これに代えて多数枚
のバフ等の柔軟性研磨材を束ねたものを用いてもよい。Although the sandpaper wheel 8 is used as a means for removing the protrusion 6 in the above-described embodiment, a plurality of buffs or other flexible abrasives may be used in a bundle instead of the sandpaper wheel 8.
なおこの柔軟性研磨材の使用形態は上記のように放射状
に束ねたものに限るものではく、その使用形状は特に問
わない。The usage form of this flexible abrasive is not limited to the above-mentioned radial bundling, and the usage form is not particularly limited.
本発明によれば、ブロー成形にて成形される合成樹脂か
らなる中空体で、かつブロー成形後その表面に塗装を施
すようにした中空体の製造方法において、ブロー成形時
に、中空体のパーティングライン部分に、他の部分より
3mm程度高くした突条６を全周にわたって形成したこと
により、中空体のパーティングライン部分に生じたヒケ
は突条６に生じることになり、中空体の本体側にこのヒ
ケ（凹み）の影響をおよばず、従ってヒケによって生じ
る凹凸全体を除去しても中空体の肉厚が薄くなったり、
穴があいたりすることがなくなり、設計通りの形状に仕
上げることができる。According to the present invention, in a method for producing a hollow body made of a synthetic resin formed by blow molding, the surface of which is coated after blow molding, the parting of the hollow body during blow molding is performed. In line part than other parts
By forming the protrusion 6 that is raised about 3 mm over the entire circumference, the sink marks generated in the parting line part of the hollow body will be generated in the protrusion 6, and the influence of the sink mark (dent) on the main body side of the hollow body. Therefore, even if the entire unevenness caused by sink marks is removed, the wall thickness of the hollow body becomes thin,
There are no holes, and the shape can be finished as designed.
特に、スポイラ等の構造部品に実施する場合、曲げ弾成
率が10,000kg/cm2以上の剛性の高いヒケの大きい合成樹
脂を使用されるので、さらに好適である。In particular, when it is applied to a structural part such as a spoiler, it is more preferable because a synthetic resin having a high shrinkage and a high flexural elastic modulus of 10,000 kg / cm 2 or more is used.
また上記突条６は高さが3mm程度と比較的高いことによ
り、中空体を構成する合成樹脂が比較的ヒケが大きい高
結晶性樹脂であっても、これのパーティングライン部分
に生じるヒケをこの突条６にて充分吸収することができ
る。Further, since the protrusion 6 has a relatively high height of about 3 mm, even if the synthetic resin forming the hollow body is a highly crystalline resin having a relatively large sink mark, the sink mark generated at the parting line portion thereof is not affected. The ridges 6 can be sufficiently absorbed.
さらにブロー成形後、この突条６をサンドペーパー７や
バフ等の柔軟性研磨材にてパーティングラインに沿って
研磨して平滑に仕上げることにより、柔軟性研磨は他の
壁より3mm程度も高くした突条６を研磨することになっ
て中空体の他の部分を削ることがなくなり、この突条６
だけを容易に削り取ることができ、この部分の平滑仕上
げを熟練者によることなく容易に、かつ極めて平滑な状
態に仕上げることができる。After blow molding, this ridge 6 is polished along the parting line with a flexible abrasive such as sandpaper 7 or buff to make it smooth, so that the flexibility of polishing is about 3 mm higher than other walls. Since the projected ridges 6 are polished, the other parts of the hollow body are not scraped off.
It is possible to easily scrape off only this, and it is possible to finish the smooth finish of this part easily and extremely smoothly without the need of an expert.
第１図から第５図は本発明方法の各工程を示すもので、
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
は第３図のIV−IV線に沿う断面矢視図、第５図は研磨工
程を示す断面図、第６図は塗装工程を示す断面図、第７
図はサンドペーパ輪の構成を概略的に示す斜視図であ
る。 １はスポイラ、4,5は分割金型、4a,5aはキャビティ、６
は突条、８はサンドペーパ輪、９はスプレーガン。1 to 5 show each step of the method of the present invention,
1 and 2 are sectional views showing the blow molding process, and FIG.
FIG. 4 is a perspective view showing a spoiler which is an example of a hollow body, FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3, FIG. 5 is a sectional view showing a polishing step, and FIG. 6 is a coating step. Sectional view showing No. 7,
The figure is a perspective view schematically showing the structure of a sandpaper wheel. 1 is a spoiler, 4 and 5 are split molds, 4a and 5a are cavities, 6
Is a ridge, 8 is a sandpaper wheel, and 9 is a spray gun.
Claims (1)
る中空体で、かつブロー成形後その表面に塗装を施すよ
うにした中空体の製造方法において、ブロー成形時に、
中空体のパーティングライン部分に、他の部分より3mm
程度高くした突条を全周にわたって形成し、ブロー成形
後、この突条をサンドペーパーやバフ等の柔軟性研磨材
にてパーティングラインに沿って研磨して平滑に仕上
げ、その後表面全体に塗装を施すようにしたことを特徴
とする中空体の製造方法。1. A method for producing a hollow body made of synthetic resin, which is molded by blow molding, wherein the surface of the hollow body is coated after blow molding.
3mm from the other part in the parting line part of the hollow body
Form a raised ridge over the entire circumference, after blow molding, polish this ridge with a flexible abrasive such as sandpaper or buff along the parting line to make it smooth, then paint on the entire surface A method for producing a hollow body, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63017394A JPH0761676B2 (en) | 1988-01-29 | 1988-01-29 | Hollow body manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63017394A JPH0761676B2 (en) | 1988-01-29 | 1988-01-29 | Hollow body manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01192526A JPH01192526A (en) | 1989-08-02 |
| JPH0761676B2 true JPH0761676B2 (en) | 1995-07-05 |
Family
ID=11942785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63017394A Expired - Lifetime JPH0761676B2 (en) | 1988-01-29 | 1988-01-29 | Hollow body manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0761676B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2393961B (en) * | 2002-10-12 | 2007-03-14 | Colormatrix Europe Ltd | Moulded thermoplastic articles and process |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6012109A (en) * | 1983-07-04 | 1985-01-22 | Toyota Motor Corp | Slurry separating method |
| JPS61268384A (en) * | 1985-05-22 | 1986-11-27 | Hitachi Elevator Eng & Serv Co Ltd | Method for polishing handrail of man conveyor |
-
1988
- 1988-01-29 JP JP63017394A patent/JPH0761676B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01192526A (en) | 1989-08-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE10253725B3 (en) | Molding of a component with a patterned skin, e.g. for vehicle trim, uses a separately manufactured patterned elastic liner inside mold | |
| JP3722635B2 (en) | Manufacturing method of injection molded products | |
| JPH0761676B2 (en) | Hollow body manufacturing method | |
| JPH1073162A (en) | Boots and method for molding and demolding the boots | |
| US5075052A (en) | Method of manufacturing a motor-vehicle steering wheel by the moulding of plastics material so that it looks like a wooden steering wheel, and a steering wheel produced by the method | |
| CN100496951C (en) | glass fiber reinforced plastic vehicle body and method for repairing parts damage | |
| JP7633501B2 (en) | Manufacturing method for automobile spoilers | |
| JPS59127718A (en) | Manufacture of plastic molded item with multi-color surface layer | |
| JPH11321478A (en) | Manufacture of vehicular resin-made metallic decoration part | |
| JPH0659454B2 (en) | Hollow body manufacturing method | |
| WO1997038840A1 (en) | Two-material moulding | |
| JP2502315Y2 (en) | Core material for foam molding | |
| EP0633843B1 (en) | Motor vehicle sunvisor | |
| JPS58116139A (en) | Manufacture of molded synthetic resin product having different color distribution | |
| JPH0648328A (en) | Manufacture of spoiler | |
| US20020064635A1 (en) | Molded product, parting surface covering masks and producing methods of the same | |
| JPH07137051A (en) | Manufacturing method for integrally molded skin | |
| DE2852146A1 (en) | Moulding of casings for apparatus or furniture components - by deep-drawing blanks of surfaces exposed to view and backing them with integrally moulded-on hard-foam lining | |
| JP4587598B2 (en) | Molding method of skin material | |
| JP4224779B2 (en) | Manufacturing method of electroforming mold | |
| JPH03124411A (en) | Production of expanded material fitted with skin | |
| JP2006264066A (en) | In-mold painting method, molded product and mold | |
| US20040191477A1 (en) | Method of making an interior trim part and article made by the process | |
| JPH0365315A (en) | Manufacture of elastic pad | |
| JP2002036264A (en) | Multi-layer molded product and method for producing the same |