JPH021659B2 - - Google Patents
Info
- Publication number
- JPH021659B2 JPH021659B2 JP28149584A JP28149584A JPH021659B2 JP H021659 B2 JPH021659 B2 JP H021659B2 JP 28149584 A JP28149584 A JP 28149584A JP 28149584 A JP28149584 A JP 28149584A JP H021659 B2 JPH021659 B2 JP H021659B2
- Authority
- JP
- Japan
- Prior art keywords
- molded product
- repair
- foamed urethane
- repair material
- rim
- 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
- 239000000463 material Substances 0.000 claims description 40
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 21
- 230000002950 deficient Effects 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 12
- 239000004088 foaming agent Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000005238 degreasing Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000010107 reaction injection moulding Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
この発明は反応射出成形（以下単にRIM成形
という）した発泡ウレタン成形品、例えば自動車
のハンドル、エアースポイラーなどの補修方法に
係るものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for repairing urethane foam molded products made by reaction injection molding (hereinafter simply referred to as RIM molding), such as automobile steering wheels and air spoilers.
従来の技術
RIM成形は２種類の低分子原液を混合して閉
じた金型の中に射出し、金型内で反応させて高分
子化させているが、その発応の際にボイドが生じ
易く、特に発泡RIM成形の場合にはボイドが大
きくなる傾向がある。Conventional technology In RIM molding, two types of low-molecular stock solutions are mixed and injected into a closed mold, and reacted within the mold to form a polymer, but voids occur during the reaction. Especially in the case of foamed RIM molding, voids tend to become large.
このようなボイドなどの欠陥箇所を成形した後
に補修する必要があり、従来の発泡ウレタン
RIM成形品の補修方法としては例えば第９図と
第１０図に図示したように、発泡ウレタンRIM
成形品３１の欠陥箇所３２の補修面３２′をホワ
イトガソリンで脱脂し、市販のウレタンパテ３３
を注入して硬化させてから補修表面を平らに研摩
し、必要に応じて塗装して仕上げていたが、この
従来の発泡ウレタンRIM成形品の補修方法では
補修材として成形品の素材と異なる素材のウレタ
ンパテを使用していたので、成形品３１とウレタ
ンパテ補修材３３との間の接着性が悪く、かつ両
者の硬度、熱膨張率が異なるために成形品を使用
していると、補修材３３が成形品３１の補修面３
２′より剥れたりする欠点があり、熱により膨張、
収縮により補修部が変形したりする欠点があつ
た。それを克服するために成形品の素材と同一の
素材を補修材として使用する方法が考えられる
が、補修作業は金型外で常温常圧で行なわれるた
めに、換言すれば、成形品の成形条件と異なる条
件下で補修材が硬化するために、補修部にはスキ
ン層も形成されず、硬度や熱膨張率等の物性も成
形品の物性とは異なるものとなつてしまう。 It is necessary to repair defects such as voids after molding, and conventional foamed urethane
As a repair method for RIM molded products, for example, as shown in Figures 9 and 10, foamed urethane RIM
The repaired surface 32' of the defective part 32 of the molded product 31 is degreased with white gasoline, and a commercially available urethane patch 33 is used.
The repaired surface was injected and cured, then the repaired surface was polished flat and painted if necessary, but this conventional method for repairing foamed urethane RIM molded products uses a material different from the material of the molded product as a repair material. Since the urethane paste was used, the adhesion between the molded product 31 and the urethane paste repair material 33 was poor, and the hardness and coefficient of thermal expansion of the two were different. The material 33 is the repaired surface 3 of the molded product 31
There is a drawback that it may peel off from 2', expand due to heat,
There was a drawback that the repaired part was deformed due to shrinkage. In order to overcome this problem, it is possible to use the same material as the molded product as a repair material, but since the repair work is done outside the mold at normal temperature and pressure, in other words, it is difficult to mold the molded product. Since the repair material is cured under different conditions, no skin layer is formed in the repaired area, and its physical properties such as hardness and coefficient of thermal expansion are different from those of the molded article.
発明が解決しようとする問題点
この発明は従来の発泡ウレタンRIM成形品の
補修方法が有するこれらの欠点を解消し、成形品
の補修面と補修材との接着性を向上させることや
補修部が成形品の補修面より剥れるのを防止する
こと、成形品の補修箇所が熱変形するのを防止す
ることなどを目的としたものである。Problems to be Solved by the Invention This invention solves these drawbacks of the conventional repair method for foamed urethane RIM molded products, improves the adhesion between the repaired surface of the molded product and the repair material, and improves the adhesiveness of the repaired part. The purpose of this is to prevent the molded product from peeling off from the repaired surface, and to prevent the repaired part of the molded product from deforming due to heat.
問題点を解決するための手段
この発明の発泡ウレタンRIM成形品の補修方
法は成形品の欠陥箇所を脱脂し、この成形品の材
料組成から発泡剤を除外した組成の材料を補修材
として欠陥箇所に注入して補修する方法である。Means for Solving the Problems The method for repairing a foamed urethane RIM molded product of the present invention is to degrease the defective part of the molded product, and use a material with a composition excluding the foaming agent from the material composition of the molded product as a repair material to repair the defective part. This is a method of repairing by injecting it into the area.
次にこの発明の発泡ウレタンRIM成形品の補
修方法を実施例について説明する。 Next, a method for repairing a foamed urethane RIM molded product according to the present invention will be described with reference to examples.
実施例 １
第１〜２図に図示したように、発泡ウレタン
RIM成形品１にある欠陥箇所２の補修面１′をホ
ワイトガソリンやトリクロロエタン等で洗浄脱脂
した後、成形品１の材料組成から発泡剤を除外し
た組成の補修材３をその欠陥箇所２に注入し、硬
化させ、その補修面を研摩し、塗装して仕上げ
る。Example 1 As shown in Figures 1 and 2, urethane foam
After cleaning and degreasing the repair surface 1' of defective location 2 in RIM molded product 1 with white gasoline, trichloroethane, etc., repair material 3 having a composition excluding the foaming agent from the material composition of molded product 1 is injected into defective location 2. After curing, the repaired surface is polished and painted.
この実施例１では補修材は成形品のスキン層と
ほぼ近似した物性の硬化物となり、成形品との接
着性がかなり向上し、補修材３の剥れを防止でき
るとともに、補修部の熱変形を防止できる。 In Example 1, the repair material becomes a cured product with physical properties almost similar to those of the skin layer of the molded product, and the adhesion to the molded product is considerably improved, preventing the repair material 3 from peeling off and causing thermal deformation of the repaired part. can be prevented.
実施例 ２
第３図から第５図に図示したように、発泡ウレ
タンRIM成形品１１にある欠陥箇所１２の補修
面１１′を先端が鋭利な加熱部材（図示せず）、例
えばハンダゴテで約180℃〜250℃で熱処理して脱
脂する。この熱処理により成形品１１の補修面１
１′は熱により分解、蒸発、溶解などの作用によ
り脂などの付着物が除去される。熱処理して拡張
した成形品１１の欠陥箇所１２に、成形品１１の
材料組成から発泡剤を除外した組成の補修材１３
を、注入し、硬化させてから、成形品１１の補修
材１３の表面とその近くの成形品１１の表面を研
摩し、塗装して仕上げる。Example 2 As shown in FIGS. 3 to 5, the repaired surface 11' of the defective part 12 in the foamed urethane RIM molded product 11 is heated approximately 180 degrees with a sharp-tipped heating member (not shown), for example, a soldering iron. Degrease by heat treatment at ℃~250℃. Through this heat treatment, the repaired surface 1 of the molded product 11
At 1', deposits such as fat are removed by decomposition, evaporation, and dissolution due to heat. A repair material 13 having a composition excluding the foaming agent from the material composition of the molded product 11 is applied to the defective location 12 of the molded product 11 expanded by heat treatment.
is injected and cured, and then the surface of the repair material 13 of the molded product 11 and the surface of the molded product 11 near it are polished and finished by painting.
この実施例２の発泡ウレタンRIM成形品の補
修方法は熱処理によりほぼ完全に脱脂したこと
と、補修材として成形品の材料組成から発泡剤を
除外した組成のもので常温常圧で補修作業を行つ
たのでRIM成形とは反応硬化の条件が異なるが、
補修材は成形品のスキン層とほぼ近似した物性の
硬化物となることが相俟つて、成形品１１の拡張
した補修面１１″と補修材１３との接着性が著し
く向上し、補修材１３の剥れを防止できるととも
に熱による膨張、収縮による補修箇所の変形など
を防止することができる。また成形品の表面にお
ける補修材やその輪郭を目立たないものにするこ
とができる。 The method for repairing the foamed urethane RIM molded product of Example 2 is that it is almost completely degreased by heat treatment, and that the repairing material is a composition that excludes the foaming agent from the material composition of the molded product, and the repair work is performed at room temperature and normal pressure. Since the reaction hardening conditions are different from RIM molding,
Together with the fact that the repair material becomes a cured product with physical properties almost similar to those of the skin layer of the molded product, the adhesion between the repair material 13 and the expanded repair surface 11'' of the molded product 11 is significantly improved, and the repair material 13 It is possible to prevent the repair material from peeling off, and also to prevent deformation of the repaired area due to expansion and contraction due to heat.It is also possible to make the repair material and its outline on the surface of the molded product less noticeable.
実施例 ３
第６図から第８図に図示したように、発泡ウレ
タンRIM成形品２１にある欠陥箇所２２の補修
面２１′を熱処理して脱脂するとともにアンダー
カツト部２４を形成し、実施例１と同様な補修材
２３を注入して硬化させてから、成形品２１の補
修材２３とその近くの成形品２１の表面を研摩
し、塗装して仕上げる。Example 3 As shown in FIGS. 6 to 8, the repaired surface 21' of the defective portion 22 in the foamed urethane RIM molded product 21 was heat treated to degrease and form an undercut portion 24. After a repair material 23 similar to the above is injected and cured, the repair material 23 of the molded product 21 and the surface of the molded product 21 near it are polished and finished by painting.
この実施例３の発泡ウレタンRIM成形品の補
修方法のようにアンダーカツト部を形成して補修
材２３を注入することにより万一補修材２３が成
形品２１より剥離しても補修材２３の成形品２１
からの浮上りや脱落を防止することができる。 By forming an undercut portion and injecting the repair material 23 as in the method for repairing a foamed urethane RIM molded product in Example 3, even if the repair material 23 is peeled off from the molded product 21, the repair material 23 can still be molded. Item 21
This can prevent floating or falling off.
発明の効果
この発明の発泡ウレタンRIM成形品の補修方
法は成形品の欠陥箇所を脱脂し、成形品の材料組
成から発泡剤を除外した組成の材料を補修材とし
て欠陥箇所に注入して補修する方法であるから、
成形品の補修面と補修材との接着性が著しく向上
することができるし、補修材が成形品の補修面よ
り剥れるのを防止することができるとともに成形
品の補修箇所が熱変形するのを防止することがで
きる。Effects of the Invention The method for repairing a foamed urethane RIM molded product of the present invention involves degreasing the defective part of the molded product, and injecting a material with a composition excluding the foaming agent from the material composition of the molded product into the defective part as a repair material to repair it. Because it is a method,
It can significantly improve the adhesion between the repaired surface of the molded product and the repair material, prevent the repair material from peeling off from the repaired surface of the molded product, and prevent thermal deformation of the repaired part of the molded product. can be prevented.
第１図から第２図は本発明の１実施例の工程順
の拡大断面図、第３図から第５図は本発明の第２
実施例の工程順の拡大断面図、第６図から第８図
は本発明の第３実施例の工程順の拡大断面図、第
９図と第１０図は従来の工程順の拡大断面図であ
る。
１は発泡ウレタンRIM成形品、２は欠陥箇所、
３は補修材。
1 to 2 are enlarged cross-sectional views of the process order of one embodiment of the present invention, and FIGS. 3 to 5 are enlarged sectional views of the second embodiment of the present invention.
FIGS. 6 to 8 are enlarged sectional views of the process order of the third embodiment of the present invention, and FIGS. 9 and 10 are enlarged sectional views of the conventional process order. be. 1 is a foamed urethane RIM molded product, 2 is a defective part,
3 is repair material.
Claims (1)
し、該成形品の材料組成から発泡剤を除外した組
成の材料を補修材として欠陥箇所に注入して補修
することを特徴とする発泡ウレタンRIM成形品
の補修方法。 ２ 脱脂は、欠陥箇所を熱処理することを特徴と
する特許請求の範囲第１項記載の発泡ウレタン
RIM成形品の補修方法。 ３ 熱処理は、欠陥箇所にアンダーカツト部を形
成することを特徴とする特許請求の範囲第２項記
載の発泡ウレタンRIM成形品の補修方法。[Claims] 1. A defective part of a foamed urethane RIM molded product is degreased, and a material having a composition excluding a foaming agent from the material composition of the molded product is injected into the defective part as a repair material to repair it. How to repair foamed urethane RIM molded products. 2. The foamed urethane according to claim 1, wherein the degreasing is performed by heat treating the defective areas.
How to repair RIM molded products. 3. The method for repairing a foamed urethane RIM molded product according to claim 2, wherein the heat treatment involves forming an undercut portion at the defective location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28149584A JPS61159429A (en) | 1984-12-31 | 1984-12-31 | Repair of cellular urethane rim molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28149584A JPS61159429A (en) | 1984-12-31 | 1984-12-31 | Repair of cellular urethane rim molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61159429A JPS61159429A (en) | 1986-07-19 |
| JPH021659B2 true JPH021659B2 (en) | 1990-01-12 |
Family
ID=17639978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28149584A Granted JPS61159429A (en) | 1984-12-31 | 1984-12-31 | Repair of cellular urethane rim molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61159429A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100410048C (en) * | 2005-08-03 | 2008-08-13 | 青岛鑫三利冷箱技术有限公司 | Container body partial heat-insulating layer foaming method |
-
1984
- 1984-12-31 JP JP28149584A patent/JPS61159429A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61159429A (en) | 1986-07-19 |
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