JP2724378B2 - Manufacturing method of integral molded skin by injection molding - Google Patents

Manufacturing method of integral molded skin by injection molding

Info

Publication number
JP2724378B2
JP2724378B2 JP63255944A JP25594488A JP2724378B2 JP 2724378 B2 JP2724378 B2 JP 2724378B2 JP 63255944 A JP63255944 A JP 63255944A JP 25594488 A JP25594488 A JP 25594488A JP 2724378 B2 JP2724378 B2 JP 2724378B2
Authority
JP
Japan
Prior art keywords
resin
skin
cavity
skin material
mold
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 - Fee Related
Application number
JP63255944A
Other languages
Japanese (ja)
Other versions
JPH02103108A (en
Inventor
隆 大久保
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TEI ESU TETSUKU KK
Original Assignee
TEI ESU TETSUKU KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TEI ESU TETSUKU KK filed Critical TEI ESU TETSUKU KK
Priority to JP63255944A priority Critical patent/JP2724378B2/en
Publication of JPH02103108A publication Critical patent/JPH02103108A/en
Application granted granted Critical
Publication of JP2724378B2 publication Critical patent/JP2724378B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/0055—Shaping

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明は表皮一体成形品の製造方法に係り、特に射出
成形を用いた表皮一体成形品の製造方法に関する。Description: FIELD OF THE INVENTION The present invention relates to a method for producing a skin integral molded product, and more particularly to a method for producing a skin integral molded product using injection molding.

［従来の技術］ 従来、車両用の成形品、例えばピラーについて説明す
ると、表皮材と、基材となる樹脂とを接合するために、
射出成形で形成した基材と、表皮材とを、予め形成して
おき、これら表皮材と基材を後工程である接着加工によ
って接合していた。また成形型のキャビティ内に予め表
皮材をインサートしておき、樹脂を射出して成形するこ
とも提案されている。[Prior Art] Conventionally, a molded article for a vehicle, for example, a pillar will be described. In order to join a skin material and a resin serving as a base material,
A base material formed by injection molding and a skin material were formed in advance, and the skin material and the base material were joined by a bonding process in a later step. It has also been proposed to insert a skin material in a cavity of a molding die in advance and to inject and mold a resin.

［発明が解決しようとする課題］ 上記従来技術によれば、基材に後工程で表皮材を接着
すると、製造工程数が多いという問題の他に、製品の均
一化という点において問題があった。[Problems to be Solved by the Invention] According to the above-mentioned conventional technology, when a skin material is adhered to a base material in a post-process, there is a problem in that the number of manufacturing steps is large and also in that a product is uniform. .

また成形型のキャビティ内に、予め表皮材とフォーム
層とを備えた表皮部材をインサートしておき、樹脂を射
出して成形すると、射出したときに表皮材に向う樹脂の
圧力が高いため、フォーム層が圧力差，温度差等によっ
て破壊され潰れてしまい、また部位によって温度差があ
るため、表皮材とフォーム層とを備えた表皮部材を使用
して成形することができなかった。In addition, a skin member having a skin material and a foam layer is previously inserted into the cavity of the molding die, and the resin is injected and molded. When the resin is injected, the pressure of the resin toward the skin material is high. The layer was broken and crushed by a pressure difference, a temperature difference, and the like, and there was a temperature difference depending on a portion. Therefore, it was impossible to mold using a skin member having a skin material and a foam layer.

さらにフォーム材を用いない場合であっても、表皮材
に向う樹脂の圧力が高い部分と低い部分とがあり、表皮
材にゆがみ等が生じてしまうという問題もある。殊に、
部位によって温度差があるため、充填する樹脂とフォー
ムそうとの密着性に差がでたりする。Further, even when the foam material is not used, there are portions where the pressure of the resin toward the skin material is high and portions where the pressure is low, and there is a problem that the skin material is distorted. In particular,
Since there is a temperature difference depending on the part, there is a difference in adhesion between the resin to be filled and the foam.

本発明の目的は、上記問題点を解決した射出成形によ
る表皮一体成形品の製造方法を提供することにある。An object of the present invention is to provide a method for manufacturing an integral skin-molded article by injection molding that solves the above problems.

［課題を解決するための手段］ 本発明は上記課題を解決するためになされたものであ
り、本発明の射出成形による表皮一体成形品の製造方法
は、表皮材と基材とを一体にした射出成形による表皮一
体成形品の製造方法であって、雄型と雌型の当接部と、
雄型と雌型で構成されるキャビティ側の端部側の当接部
とが押切り部を介してクリアランスに差を有する型内に
前記表皮材を配設する工程と、該表皮材を配設した型を
締めると共に表皮材の端部を切除する工程と、基材とな
る樹脂を可塑化してホットランナーからキャビティとプ
ランジャーとの間に形成された空間部に充填する工程
と、前記空間部に充填された樹脂を前記プランジャーに
よりキャビティ内に低圧で充填する工程と、を備えてな
る構成とする。[Means for Solving the Problems] The present invention has been made to solve the above problems, and the method for producing a skin-integrated molded product by injection molding according to the present invention integrates a skin material and a base material. A method for producing an integral skin-molded product by injection molding, wherein a male and female contact portion,
A step of disposing the skin material in a mold having a clearance difference between a contact portion on an end side on a cavity side formed by a male die and a female die via a push-off portion; and disposing the skin material. Tightening the provided mold and cutting off the end of the skin material, plasticizing the resin serving as the base material, and filling the space formed between the cavity and the plunger from the hot runner with the space; Filling the cavity filled with the resin at a low pressure by the plunger.

また、表皮材を配設した型を締める工程と、前記空間
部に充填された樹脂をプランジャーによりキャビティ内
に充填する工程を同時に行うこともできる。Further, the step of tightening the mold in which the skin material is disposed and the step of filling the resin filled in the space with the plunger into the cavity can be performed simultaneously.

さらに、表皮材と前記キャビティ内に充填された樹脂
が一体となった端部を樹脂側に折曲げ、折曲げて接合さ
れる面が成形樹脂同士とした工程と、を付加して構成し
てもよい。Further, a step of bending the integrated end of the skin material and the resin filled in the cavity to the resin side, and forming the surfaces to be bent and joined to each other with the molding resin, is further configured. Is also good.

［実施例］ 以下本発明方法の一実施例を図面に基づいて説明す
る。なお以下に説明する部材，配置等は本発明を限定す
るものではなく、本発明の趣旨の範囲内で種々改変する
ことができるものである。Example An example of the method of the present invention will be described below with reference to the drawings. The members, arrangements, and the like described below do not limit the present invention, and can be variously modified within the scope of the present invention.

本例では、表皮一体成形品として、車両用ピラーを例
にして製造方法を説明する。In this example, a manufacturing method will be described using a vehicle pillar as an example of a skin integral molded product.

第1A図は本発明方法に使用する成形装置の一例を示す
ものであり、成形装置Ｓは、雌型10と、雄型20とからな
り、雌型10のキャビティ11は、表皮一体成形品としての
ピラーＰの外形形状に合せて凹設されている。FIG. 1A shows an example of a molding apparatus used in the method of the present invention. The molding apparatus S includes a female mold 10 and a male mold 20, and the cavity 11 of the female mold 10 is formed as a skin-integrated product. Are recessed in accordance with the outer shape of the pillar P.

一方雄型20は、キャビティ面の略中央部において、空
間部21が凹設されており、この空間部21は、ピラーＰの
基材１となる樹脂材料を加熱して可塑化するホットラン
ナー部22と連通している。そして上記ホットランナー部
22から空間部21へ樹脂材料が注入される。また上記空間
部21には、射出プランジャー23が上記ホットプランナー
部22の開口部22aより外側（第1A図において右側）に配
設されており、このプランジャー23は油圧シリンダ24に
よって空間部21内を摺動できるように構成されており、
空間部21に注入された樹脂材料をキャビティ11内に充填
させることができる。On the other hand, in the male mold 20, a space 21 is recessed substantially at the center of the cavity surface, and the space 21 is formed by a hot runner part which heats and plasticizes the resin material serving as the base material 1 of the pillar P. Communicates with 22. And the above hot runner part
A resin material is injected from 22 into the space 21. In addition, an injection plunger 23 is disposed in the space 21 outside the opening 22a of the hot planner 22 (on the right side in FIG. 1A). It is configured to be able to slide inside,
The cavity 11 can be filled with the resin material injected into the space 21.

また上記雄型10と雌型20との合せ部の端面部は、第1B
図で示すように、表皮材２の端部を切るための表皮押切
り部30が形成されている。そしてこの押切り部30を挟ん
で、雄型10と雌型20との当接部31と、雄型と雌型で構成
されるキャビティ側の端部側の当接部とのクリアランス
が、押切り部を介してそれぞれ異なる（クリアランスに
差を有する）ように構成している。このクリアランスの
差を設けると、例えば当接部31のクリアランスを０と
し、キャビティ11側の当接部32のクリアランスを0.1mm
とすると、キャビティ11側の当接部32側には、0.1mmの
樹脂層を形成させることができる。また厚みの異なる表
皮材を用いた場合においても、クリアランスの差を設け
ることにより、常にクリアランス差の樹脂厚を形成する
ことができる。さらに表皮押切り部30によって余剰の表
皮材は除去されているために、基材１となる樹脂層と表
皮材２とが接合された端部を内側に折り込み、この折り
込み部３を接着或いは溶着することにより端末部を良好
にすることができる。折り込み部３は、折り曲げて接合
される面が成形樹脂同士で同一材質となるため、強度を
十分確保することができる。また折り込み部３をスタン
ピングによって内側に接合しても良い。In addition, the end face of the mating portion between the male mold 10 and the female mold 20 is a 1B
As shown in the figure, a skin push-off portion 30 for cutting an end of the skin material 2 is formed. The clearance between the contact portion 31 between the male mold 10 and the female mold 20 and the contact portion on the end side of the cavity formed by the male mold and the female mold with the press-cutting portion 30 interposed therebetween. It is configured so as to be different (having a difference in clearance) through the cut portion. When this clearance difference is provided, for example, the clearance of the contact portion 31 is set to 0, and the clearance of the contact portion 32 on the cavity 11 side is set to 0.1 mm.
Then, a resin layer of 0.1 mm can be formed on the contact portion 32 side on the cavity 11 side. Even when skin materials having different thicknesses are used, by providing a difference in clearance, a resin thickness having a difference in clearance can always be formed. Further, since the excess skin material has been removed by the skin pressing portion 30, the end where the resin layer serving as the base material 1 and the skin material 2 are joined is folded inward, and the folded portion 3 is bonded or welded. By doing so, it is possible to improve the terminal unit. Since the surfaces of the folded portions 3 to be bent and joined are made of the same material between the molding resins, sufficient strength can be ensured. Further, the folded portion 3 may be joined to the inside by stamping.

次に本発明方法の一例を第1C図で示すブロック図に基
づいて説明する。Next, an example of the method of the present invention will be described based on the block diagram shown in FIG. 1C.

本発明方法のために第1A図で示す装置によって、第1D
図で示すような表皮一体成形品としての車両用ピラーを
製造する場合を示す。基材１となる使用樹脂は、ポリプ
ロピレン（PP）を用いて、表皮材２としては、ポリ塩化
ビニル（PVC）2aとウレタンフォーム2bをラミネートし
たものを用いる。The apparatus shown in FIG.
The case of manufacturing a vehicle pillar as an integral skin product as shown in the figure is shown. The resin used as the base material 1 is polypropylene (PP), and the skin material 2 is a laminate of polyvinyl chloride (PVC) 2a and urethane foam 2b.

第1C図のブロック図で示すように、先ず、表皮材２を
雌型10内に配設し、図示しないクランプによって表皮材
２の両端側を保持する（工程Ａ）。次にこの表皮材２を
配設した雌型10と、雄型20とを型締めする（工程Ｂ）。
このとき押切り刃部30によって表皮材２の端部は切除さ
れる。そして基材１となる樹脂をホットランナー22か
ら、キャビティ11とプランジャー23との間に形成された
空間部21に射出する（工程Ｃ）。この空間部21に一旦樹
脂を射出することにより、樹脂の温度及び圧力を調整し
て低くすることができる。そして低圧でキャビティ11内
へ充填するために、プランジャー23を油圧シリンダ24で
作動して、空間部21に充填された樹脂をキャビティ11内
に充填する（工程Ｄ）。上記工程Ｂ〜Ｄのとき、空間部
21からキャビティ11への樹脂温度は160°〜200℃の範囲
で、圧力は30Kg/cm2〜100Kg/cm2で行なう。そして雌雄
の型開きをして、製品を取出す（工程Ｅ）。取出した製
品の端部は、第1D図の鎖線の状態であるが、第1D図の矢
印Ｘで示すように折り込み、折り込み部３として接合す
る（工程Ｆ）。このとき、折り込み部３は樹脂同志の接
合となり、接合性に優れたものとなる。As shown in the block diagram of FIG. 1C, first, the skin material 2 is disposed in the female mold 10, and both ends of the skin material 2 are held by clamps (not shown) (step A). Next, the female mold 10 provided with the skin material 2 and the male mold 20 are clamped (step B).
At this time, the end of the skin material 2 is cut off by the pushing blade 30. Then, the resin to be the base material 1 is injected from the hot runner 22 into the space 21 formed between the cavity 11 and the plunger 23 (step C). By injecting the resin into the space 21 once, the temperature and pressure of the resin can be adjusted and lowered. Then, in order to fill the cavity 11 with a low pressure, the plunger 23 is operated by the hydraulic cylinder 24 to fill the cavity 11 with the resin filled in the space 21 (step D). In the above steps B to D, the space portion
Resin temperature of from 21 to cavity 11 in the range of 160 ° to 200 DEG ° C., the pressure is carried out at 30Kg / cm 2 ~100Kg / cm 2 . Then, the male and female molds are opened to take out the product (step E). The end of the product taken out is in the state of the chain line in FIG. 1D, but is folded as shown by the arrow X in FIG. 1D and joined as the folded portion 3 (step F). At this time, the folded portions 3 are joined to each other by the resin, and have excellent joining properties.

また第２図は上記第1C図で示す方法とは、異なる方法
を示すブロック図であり、このブロック図で示すよう
に、表皮材２を型10内に配設した（工程Ａ）後に、基材
１となる樹脂をホットランナー22からキャビティ11とプ
ランジャー23との間に形成された空間部21に射出を行な
う（工程Ｃ）。そして、上記第1C図で示す工程Ｂ〜工程
Ｄにおいて、雄型20と雌型10の間（クリアランス）が２
〜5mmの時に空間部21へ射出し、雌型10と雄型20を型締
めしながらキャビティ11内に樹脂を押出す。そして型締
め終了時には、キャビティ11内へ樹脂の充填が終了する
ようにする。このとき型締め圧を利用してプランジャー
23を機械的に作動させて充填させることもできる。この
ように工程Ａの次に工程Ｃを行ない、工程Ｂと工程Ｄを
同時に行なうようにする。そして型開きして、製品を取
出す（工程Ｅ）。FIG. 2 is a block diagram showing a method different from the method shown in FIG. 1C. As shown in this block diagram, after the skin material 2 is disposed in the mold 10 (step A), The resin as the material 1 is injected from the hot runner 22 into the space 21 formed between the cavity 11 and the plunger 23 (step C). In the steps B to D shown in FIG. 1C, the clearance (clearance) between the male mold 20 and the female mold 10 is 2
When the distance is about 5 mm, the resin is injected into the space 21, and the resin is extruded into the cavity 11 while clamping the female mold 10 and the male mold 20. At the end of the mold clamping, the filling of the cavity 11 with the resin is completed. At this time, the plunger is
23 can also be filled mechanically. Thus, the process C is performed after the process A, and the processes B and D are performed simultaneously. Then, the mold is opened and the product is taken out (step E).

なお基材となる使用樹脂は、ポリプロピレン（PP）の
外にABS樹脂等を用いることができる。また表皮材とし
ては、ポリ塩化ビニル樹脂（PVC）とウレタンフォーム
とのラミネート材の外に、布とウレタンフォームのラミ
ネート材、PVCレザー、布とPPフォームとのラミネート
材、PVCとPPフォームとのラミネート材、オレフィン系
の熱可塑性エラストマー等を用いることができる。The resin used as the base material may be an ABS resin or the like in addition to the polypropylene (PP). As the skin material, in addition to the laminate material of polyvinyl chloride resin (PVC) and urethane foam, the laminate material of cloth and urethane foam, the PVC leather, the laminate material of cloth and PP foam, and the laminate material of PVC and PP foam A laminate material, an olefin-based thermoplastic elastomer, or the like can be used.

なお本発明は、空間部で射出された樹脂の圧力等を調
整できる低圧射出成形によっているため、表皮材をクラ
ンプ位置まで配設することができる。そして成形が低圧
であるので、充填樹脂、例えばウレタンが、表皮材の端
部まで充填せず、表皮材の厚み等を変更しても、この厚
さだけ全体の厚さを確保できることとなり、樹脂の板
圧、重量等は変化をしない。Since the present invention employs low-pressure injection molding capable of adjusting the pressure and the like of the resin injected in the space, the skin material can be disposed up to the clamp position. And since molding is at a low pressure, the filling resin, for example, urethane, does not fill the end of the skin material, and even if the thickness of the skin material is changed, the entire thickness can be secured by this thickness, The plate pressure, weight, etc. do not change.

［発明の効果］ 以上のように、本発明方法によれば、配設された表皮
材にかかる圧力は低くして、略一定となり、また温度を
下げているので、表皮材にゆがみ等を生じない。そし
て、常にクリアランスの差の部分の樹脂層を形成するこ
とができ、厚みの異なる表皮材を用いてもクリアランス
差により樹脂厚を確保できる。殊に表皮材にフォーム層
を接合したラミネート材の場合に顕著である。さらに従
来の射出成形機を用いて、製品に合せて型構造を変化さ
せるだけで良く、経済効率を高めることができる。[Effects of the Invention] As described above, according to the method of the present invention, the pressure applied to the disposed skin material is reduced and becomes substantially constant, and the temperature is lowered. Absent. Then, the resin layer can be always formed in a portion having a difference in clearance, and even if skin materials having different thicknesses are used, the resin thickness can be secured by the difference in clearance. This is particularly remarkable in the case of a laminate in which a foam layer is joined to a skin material. Furthermore, it is only necessary to change the mold structure according to the product using the conventional injection molding machine, and the economic efficiency can be improved.

【図面の簡単な説明】[Brief description of the drawings]

第1A図は本発明方法に用いられる装置の概略を示す要部
断面図、第1B図は第1A図の雌雄型接合部にける要部拡大
図、第1C図はブロック図、第1D図は成形品の部分断面
図、第２図は他の方法におけるブロック図である。 １…基材、２…表皮材、2a…表皮、2b…フォーム、３…
折り込み部、10…雌型、11…キャビティ、20…雄型、21
…空間部、22…ホットランナー、23…プランジャー、24
…油圧シリンダ、Ｐ…製品（ピラー）、Ｓ…成形装置。FIG. 1A is a cross-sectional view of a main part schematically showing an apparatus used in the method of the present invention, FIG. 1B is an enlarged view of a main part in a male-female joint of FIG. 1A, FIG. 1C is a block diagram, and FIG. FIG. 2 is a partial sectional view of a molded article, and FIG. 2 is a block diagram showing another method. DESCRIPTION OF SYMBOLS 1 ... Base material, 2 ... Skin material, 2a ... Skin, 2b ... Foam, 3 ...
Folding part, 10 ... female type, 11 ... cavity, 20 ... male type, 21
... space, 22 ... hot runner, 23 ... plunger, 24
... hydraulic cylinders, P ... products (pillars), S ... molding equipment.

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】表皮材と基材とを一体にした射出成形によ
る表皮一体成形品の製造方法であって、雄型と雌型の当
接部と、雄型と雌型で構成されるキャビティ側の端部側
の当接部とが押切り部を介してクリアランスに差を有す
る型内に前記表皮材を配設する工程と、該表皮材を配設
した型を締めると共に表皮材の端部を切除する工程と、
基材となる樹脂を可塑化してホットランナーからキャビ
ティとプランジャーとの間に形成された空間部に充填す
る工程と、前記空間部に充填された樹脂を前記プランジ
ャーによりキャビティ内に低圧で充填する工程と、を備
えてなることを特徴とする射出成形による表皮一体成形
品の製造方法。1. A method of manufacturing an integral skin product by injection molding in which a skin material and a base material are integrated with each other, comprising a male and female contact portion, and a male and female mold cavity. Disposing the skin material in a mold having a difference in clearance between the contact portion on the side of the side and the press-cut portion, and tightening the mold on which the skin material is arranged and the end of the skin material. Removing the part,
A step of plasticizing a resin as a base material and filling a space formed between the cavity and the plunger from the hot runner, and filling the resin filled in the space with a low pressure into the cavity by the plunger A method for producing an integral skin-molded article by injection molding. 【請求項２】前記表皮材を配設した型を締める工程と、
前記空間部に充填された樹脂をプランジャーによりキャ
ビティ内に充填する工程を同時に行うことを特徴とする
請求項１記載の射出成形による表皮一体成形品の製造方
法。2. A step of fastening a mold provided with the skin material,
2. The method according to claim 1, wherein the step of filling the cavity with the resin filled in the space is performed simultaneously with the plunger. 【請求項３】前記表皮材と前記キャビティ内に充填され
た樹脂が一体となった端部を樹脂側に折曲げ、折曲げて
接合される面が成形樹脂同士とした工程と、を備えてな
ることを特徴とする請求項１または２記載の射出成形に
よる表皮一体成形品の製造方法。3. A step of bending an integrated end of the skin material and the resin filled in the cavity to a resin side, and bending and joining the surfaces to form molding resins. The method for producing an integral skin-molded article by injection molding according to claim 1 or 2.
JP63255944A 1988-10-13 1988-10-13 Manufacturing method of integral molded skin by injection molding Expired - Fee Related JP2724378B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63255944A JP2724378B2 (en) 1988-10-13 1988-10-13 Manufacturing method of integral molded skin by injection molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63255944A JP2724378B2 (en) 1988-10-13 1988-10-13 Manufacturing method of integral molded skin by injection molding

Publications (2)

Publication Number Publication Date
JPH02103108A JPH02103108A (en) 1990-04-16
JP2724378B2 true JP2724378B2 (en) 1998-03-09

Family

ID=17285746

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Application Number Title Priority Date Filing Date
JP63255944A Expired - Fee Related JP2724378B2 (en) 1988-10-13 1988-10-13 Manufacturing method of integral molded skin by injection molding

Country Status (1)

Country Link
JP (1) JP2724378B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2503753B2 (en) * 1990-10-12 1996-06-05 住友化学工業株式会社 Molding method of polypropylene resin molded body to which skin material lined with foaming layer is laminated
JP5093487B2 (en) * 2008-03-25 2012-12-12 トヨタ紡織株式会社 Injection foam molded article, injection foam mold, and method of manufacturing injection foam molded article

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH054986Y2 (en) * 1987-05-29 1993-02-09

Also Published As

Publication number Publication date
JPH02103108A (en) 1990-04-16

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