JPH07121560B2 - Method for correcting voids in foamed molded products - Google Patents
Method for correcting voids in foamed molded productsInfo
- Publication number
- JPH07121560B2 JPH07121560B2 JP2027261A JP2726190A JPH07121560B2 JP H07121560 B2 JPH07121560 B2 JP H07121560B2 JP 2027261 A JP2027261 A JP 2027261A JP 2726190 A JP2726190 A JP 2726190A JP H07121560 B2 JPH07121560 B2 JP H07121560B2
- Authority
- JP
- Japan
- Prior art keywords
- void
- voids
- foam
- correcting
- foamed 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 - Lifetime
Links
Description
【発明の詳細な説明】 産業上の利用分野 本発明は発泡成形品のボイド修正方法に関する。Description: TECHNICAL FIELD The present invention relates to a method for correcting voids in a foamed molded article.
従来の技術 例えば、インスツルマントパネル等の自動車の内装部材
にはポリウレタン等を発泡させた発泡成形品がよく使用
される。このような発泡成形品を製造するには、下型の
凹所に塩化ビニール等のシートを装着し、この凹所中に
ウレタン発泡原液を注入してから、コア（芯材）が装着
された上型を下型に被せて上型と下型との間にキャビテ
ィを画成し、このキャビティ中で注入されたウレタン発
泡原液を発泡させてウレタンをコアとシートとの間で膨
張させ発泡成形品を得るようにしている。発泡成形品の
このような製造方法では、発泡原液注入時に混入した空
気が発泡過程において外に逃げ出さずに発泡層中に残っ
てしまい、ボイドが発生することがある。このようなボ
イドが発生すると発泡成形品のボイド部位の表面が凹ん
で外観が悪化するので、これらのボイドを埋め込むボイ
ドの修正作業が行う必要がある。2. Description of the Related Art For example, foamed molded products made by foaming polyurethane are often used for automobile interior members such as instrument panel. In order to manufacture such a foam-molded article, a sheet of vinyl chloride or the like was mounted in the recess of the lower mold, the urethane foaming undiluted solution was injected into this recess, and then the core (core material) was mounted. The upper mold is covered with the lower mold to define a cavity between the upper mold and the lower mold, and the urethane foaming undiluted solution injected in the cavity is foamed to expand the urethane between the core and the sheet and foam molding. I try to get the goods. In such a method for producing a foam-molded article, the air mixed during the injection of the foaming undiluted solution does not escape to the outside in the foaming process and remains in the foam layer, which may cause a void. When such voids are generated, the surface of the void portion of the foamed molded product is dented and the appearance is deteriorated. Therefore, it is necessary to correct the voids for embedding these voids.
従来のボイドの修正作業は、まず外観及び／又は手触り
等でボイドの位置を特定し、特定したボイドの位置に対
応するコアに穴を開け、この穴を介してウレタン発泡原
液をボイド中に注入して硬化させることによりボイドの
修正作業を行っていた。In the conventional void correction work, the void position is first specified by appearance and / or touch, a hole is made in the core corresponding to the specified void position, and the urethane foam stock solution is injected into the void through this hole. Then, the work of correcting the voids was carried out by curing.
発明が解決しようとする課題 このようなボイドの修正方法では、ボイド中に注入され
たウレタン発泡原液はボイド内で発泡して膨張し、コア
に設けた穴を介して、外部に漏れ出してくることになる
ため、作業現場がウレンタン発泡原液又は発泡したウレ
タンフォームで汚れるという問題があった。また、この
ようにして汚れた（付着した）ウレタンフォームを除去
しなければならず、その作業に多大な時間を要すると共
に、修正作業時間が１個の発泡成形品の修正作業に約10
分間程時間を要していた。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In such a method for correcting voids, the urethane foaming undiluted solution injected into the voids expands and expands in the voids, and leaks to the outside through the holes provided in the core. Therefore, there is a problem that the work site is contaminated with the undiluted urethane foam solution or the foamed urethane foam. In addition, it is necessary to remove the dirty (adhered) urethane foam in this way, which requires a great deal of time, and the correction work time is about 10 times for the correction work of one foam molded article.
It took about a minute.
本発明はこのような点に鑑みてなされたものであり、そ
の目的とするところは、作業現場及び発泡成形品を汚す
ことなく、短時間で発泡成形品のボイドを修正すること
のできるボイド修正方法を提供することである。The present invention has been made in view of the above points, and an object thereof is to correct a void of a foamed molded product in a short time without contaminating a work site and the foamed molded product. Is to provide a method.
課題を解決するための手段 上述した目的を達成するために、本発明の発泡成形品の
ボイド修正方法は、発泡成形品の発泡層中に生成された
ボイド内に中空ピンを挿入し、該中空ピンを介して硬化
性充填剤を前記ボイド中に注入して硬化させるステップ
から構成される。Means for Solving the Problems In order to achieve the above-mentioned object, the void correcting method of the foamed molded article of the present invention is to insert a hollow pin into the void generated in the foam layer of the foamed molded article, and Injecting a curable filler into the void through a pin to cure.
作用 本発明のボイドの修正方法では、中空ピンを介して硬化
性充填剤をボイド中に注入して硬化させることにより、
発泡層中のボイドを修正しているので、作現場及び発泡
成形品を汚すことなく、短時間でボイドの修正作業を行
うことができる。Effect In the method for correcting voids of the present invention, by injecting a curable filler into the voids through the hollow pins to cure the voids,
Since the voids in the foam layer are corrected, it is possible to perform the void correction work in a short time without contaminating the work site and the foam-molded article.
実施例 以下、本発明のボイド修正方法を図面に示した実施例に
基づいて詳細に説明する。Embodiment Hereinafter, a void correcting method of the present invention will be described in detail based on an embodiment shown in the drawings.
添付図面は本発明のボイド修正方法の一実施例を示す一
部断面側面図である。10は自動車のインスツルマントパ
ネル等に使用される発泡成形品であり、この発泡成形品
10の製造方法は従来と同様に、図示しない凹所を有する
下型に塩化ビニル等の表皮材12を装着してから、ポリオ
ールとイソシアネートとの二液を混合したウレタン発泡
原液をこの凹所中に注入し、合成樹脂性のコア14が装着
された上型を下型に被せることにより成形型を閉じ、上
型と下型により画成されたキャビティ中で注入されたウ
レタン発泡原液を発泡させ発泡層16を得るようにしてい
る。このような製造方法で発泡成形品10を製造した場
合、発泡原液注入時に混入された空気が発泡時に抜けき
れずに、発泡層16中に気泡として残ってしまいボイド18
を発生する場合がある。そこで本発明では、発泡層16中
に生成されたボイド18の修正を以下のような方法で達成
する。The attached drawings are partial cross-sectional side views showing an embodiment of the void correcting method of the present invention. 10 is a foam molded product used for automobile instrument panel, etc.
As in the conventional method, the manufacturing method of 10 is to mount a skin material 12 such as vinyl chloride on a lower mold having a recess (not shown), and then a urethane foaming undiluted solution obtained by mixing two liquids of a polyol and an isocyanate in the recess. The mold is closed by covering the lower mold with the upper mold fitted with the synthetic resin core 14 and foaming the urethane foaming undiluted solution injected in the cavity defined by the upper mold and the lower mold. The foam layer 16 is obtained. When the foam molded article 10 is manufactured by such a manufacturing method, the air mixed at the time of injecting the undiluted foam solution cannot be completely exhausted at the time of foaming, and remains as bubbles in the foam layer 16 so that the void 18
May occur. Therefore, in the present invention, the correction of the void 18 generated in the foam layer 16 is achieved by the following method.
即ち、ディスペンスガン（分配ガン）20の先端に中空ピ
ン（ノズル）22を装着し、ボイド18近傍の発泡層16を表
皮材12と共にコア14から一部分で引き剥がし、この引き
剥がした部分を通して中空ピン22をボイド18中に挿入す
る。ディスペンスガン20はホース24,コネクタ26を介し
てシリコーン樹脂等の一液湿気硬化性充填剤の収容され
たカートリッジ・ディスペンサ28に接続されており、こ
のカートリッジ・ディスペンサ28は制御装置30により制
御されて、所定量のシリコーン樹脂がボイド18中に注入
され、この注入されたシリコーン樹脂はボイド内の空気
中に含まれる湿気により硬化してボイド18を塞ぐことが
できる。That is, a hollow pin (nozzle) 22 is attached to the tip of a dispensing gun (distributor gun) 20, the foam layer 16 in the vicinity of the void 18 is partially peeled off from the core 14 together with the skin material 12, and the hollow pin is passed through this peeled portion. Insert 22 into void 18. The dispense gun 20 is connected via a hose 24 and a connector 26 to a cartridge dispenser 28 containing a one-component moisture-curable filler such as silicone resin, and the cartridge dispenser 28 is controlled by a controller 30. A predetermined amount of silicone resin is injected into the void 18, and the injected silicone resin can be hardened by the moisture contained in the air in the void to close the void 18.
本発明における前記実施例のボイド修正方法によれば、
従来のようにボイド近傍のコアにウレタン注入用の穴を
開けることなく、発泡層16中のボイドの位置を特定し
て、このボイド近傍の発泡層を表皮材とともにコアから
引き剥がしボイド中に中空ピンを介してシリコーン樹脂
等の一液湿気硬化型充填剤を注入するだけでよいので、
ボイド修正時間が従来の約1/10に短縮される。また、ボ
イド中には従来の二液混合のポリウレタン発泡原液に換
えてシリコーン樹脂等の一液の湿気硬化性充填剤を注入
して修正作業を行っているので、従来のように注入液の
配合ミスによるボイド部分に硬度不良が発生することも
なく、また注入された充填剤が発泡膨張することがない
ため、作業現場及び発泡成形品を汚すことはない。According to the void correction method of the above embodiment of the present invention,
Without opening a hole for urethane injection in the core near the void as in the past, the position of the void in the foam layer 16 was specified, and the foam layer near the void was peeled off from the core together with the skin material and hollowed in the void. Since it is only necessary to inject a one-component moisture-curable filler such as silicone resin through the pin,
Void correction time is reduced to about 1/10 of the conventional one. Also, instead of the conventional two-part polyurethane foaming undiluted solution, a one-part moisture-curable filler such as silicone resin is injected into the void to perform correction work. Hardness does not occur in the void portion due to a mistake, and the injected filler does not foam and expand, so the work site and the foam molded product are not contaminated.
発明の効果 本発明の発泡成形品のボイド修正方法は以上詳述したよ
うに構成したので、作業現場及び発泡成形品を汚すこと
なく短時間でボイドの修正を行うことができるという効
果を奏する。EFFECTS OF THE INVENTION Since the void-correcting method for the foam-molded article of the present invention is configured as described above in detail, it is possible to correct the void in a short time without contaminating the work site and the foam-molded article.
添付図面は本発明のボイド修正方法の一実施例に係る一
部断面側面図である。 10……発泡成形品、12……表皮材、14……コア、16……
発泡層、18……ボイド、20……ディスペンスガン、22…
…中空ピン、28……カートリッジ・ディスペンサ。The accompanying drawings are partial cross-sectional side views according to an embodiment of the void correcting method of the present invention. 10 …… Foam molded product, 12 …… Surface material, 14 …… Core, 16 ……
Foam layer, 18 ... Void, 20 ... Dispensing gun, 22 ...
… Hollow pin, 28 …… Cartridge dispenser.
Claims (1)
内に中空ピンを挿入し、 該中空ピンを介して硬化性充填剤を前記ボイド中に注入
して硬化させることを特徴とする発泡成形品のボイド修
正方法。1. A hollow pin is inserted into a void formed in a foam layer of a foam molded article, and a curable filler is injected into the void through the hollow pin to cure the void. Method for correcting voids in foamed molded products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2027261A JPH07121560B2 (en) | 1990-02-08 | 1990-02-08 | Method for correcting voids in foamed molded products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2027261A JPH07121560B2 (en) | 1990-02-08 | 1990-02-08 | Method for correcting voids in foamed molded products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03231832A JPH03231832A (en) | 1991-10-15 |
| JPH07121560B2 true JPH07121560B2 (en) | 1995-12-25 |
Family
ID=12216136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2027261A Expired - Lifetime JPH07121560B2 (en) | 1990-02-08 | 1990-02-08 | Method for correcting voids in foamed molded products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07121560B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104494173B (en) * | 2014-12-11 | 2016-10-05 | 天津博信汽车零部件有限公司 | A kind of soft instrument panel air pocket repair process, its special filling body and device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5259406A (en) * | 1975-11-11 | 1977-05-16 | Minoru Matsuoka | Method of treating pin hole of spike tire |
| JPH0698702B2 (en) * | 1986-12-19 | 1994-12-07 | 株式会社イノアックコ−ポレ−ション | Foam molded article repair method |
-
1990
- 1990-02-08 JP JP2027261A patent/JPH07121560B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03231832A (en) | 1991-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7674422B2 (en) | Reinforced thin-shell molds | |
| US3970732A (en) | Method of molding rigid foamed polyurethane articles | |
| US5082609A (en) | Method of forming a moulded panel | |
| US4529639A (en) | Molded foam-backed carpet assembly and method of producing same | |
| EP0386818B1 (en) | A method of making objects having an elastomeric outer wall and a synthetic foam core | |
| JP2876284B2 (en) | Mold for partial molding of pad | |
| US7273572B2 (en) | Method of making an interior panel for a door and an article made thereby | |
| JP2010201726A (en) | Seat pad molding mold and method for producing seat pad using the mold | |
| US7147808B2 (en) | Vehicle part with integrated impact management feature and method of making same | |
| JPH07121560B2 (en) | Method for correcting voids in foamed molded products | |
| US5039293A (en) | Device for the manufacture of a composite part | |
| US20040191477A1 (en) | Method of making an interior trim part and article made by the process | |
| JPS59142112A (en) | Resin molded item and manufacture thereof | |
| JPH11179746A (en) | Smc molded product and method for molding the same | |
| JPS61268412A (en) | Integral foam molding | |
| JPH06198660A (en) | Bathtub and manufacture thereof | |
| JPS5857927A (en) | Preparation of foam molded article | |
| JPH025568B2 (en) | ||
| JPH05429A (en) | Manufacture of foam | |
| JP3193488B2 (en) | Method for producing skin integral foam product and insert used therefor | |
| JPH06320551A (en) | Skin integrated foam and production thereof | |
| JPH0425414A (en) | Manufacture of foamed product | |
| JPH0698702B2 (en) | Foam molded article repair method | |
| JPH11156868A (en) | Partial molding of pad | |
| JPS63154309A (en) | Molded object filled with resin and its manufacture |