JPH02103108A - Preparation of skin integral molding by injection molding - Google Patents
Preparation of skin integral molding by injection moldingInfo
- Publication number
- JPH02103108A JPH02103108A JP25594488A JP25594488A JPH02103108A JP H02103108 A JPH02103108 A JP H02103108A JP 25594488 A JP25594488 A JP 25594488A JP 25594488 A JP25594488 A JP 25594488A JP H02103108 A JPH02103108 A JP H02103108A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- cavity
- skin material
- skin
- plunger
- 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
- 238000001746 injection moulding Methods 0.000 title claims description 12
- 238000000465 moulding Methods 0.000 title description 5
- 238000002360 preparation method Methods 0.000 title 1
- 239000000463 material Substances 0.000 claims abstract description 69
- 239000011347 resin Substances 0.000 claims abstract description 48
- 229920005989 resin Polymers 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims description 25
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000005452 bending Methods 0.000 claims 1
- 238000005520 cutting process Methods 0.000 abstract description 4
- 210000003491 skin Anatomy 0.000 description 14
- 239000006260 foam Substances 0.000 description 10
- 239000004743 Polypropylene Substances 0.000 description 6
- 229920001155 polypropylene Polymers 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000002648 laminated material Substances 0.000 description 5
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 4
- 239000004800 polyvinyl chloride Substances 0.000 description 4
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
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)
Abstract
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。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing an integrally molded skin product, and more particularly to a method for manufacturing an integrally molded skin 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, to explain a molded product for a vehicle, for example, a pillar, in order to bond the skin material and the resin serving as the base material, the base material formed by injection molding and the skin material are bonded in advance. These skin materials and base materials were bonded together in a post-process adhesive process. It has also been proposed to insert a skin material into the cavity of a mold in advance and inject resin into the mold.
［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。[Problem to be Solved by the Invention] According to the above-mentioned conventional technology, when a skin material is bonded to a base material in a post-process, there is a problem in that the number of manufacturing steps is large, as well as in terms of uniformity of the product. .
また成形型のキャビティ内に、予め表皮材とフオーム層
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、フオーム層が圧力差、温度差等によって
破壊され漬れてしまい、また部位によって温度差がある
ため、表皮材とフオ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, if a skin member with a skin material and a foam layer is inserted into the mold cavity in advance and resin is injected and molded, the pressure of the resin toward the skin material is high when it is injected. It has been impossible to mold using a skin member comprising a skin material and a foam layer because the layers are destroyed and soaked due to pressure differences, temperature differences, etc., and there are temperature differences depending on the location.
さらにフオ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１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、充填する樹脂とフオーム
層との密着性に差が出たりする。Furthermore, even when a foam material is not used, there are parts where the pressure of the resin toward the skin material is high and parts where it is low, resulting in the problem that distortion or the like occurs in one skin material. In particular, since there are temperature differences depending on the location, there may be differences in the adhesion between the resin to be filled and the foam layer.
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 integrally molded skin product by injection molding, which solves the above-mentioned 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、前記表皮材を型内に配設す
る工程と、該表皮材を配設した型を締める工程と、基材
となる樹脂をＯｆ塑化してホットランナ−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からなる
構成とする。[Means for Solving the Problems] The present invention has been made to solve the above-mentioned problems, and the method for manufacturing an integrally molded skin product by injection molding of the present invention is a method for manufacturing a skin integrally molded product by integrating a skin material and a base material. A method for manufacturing an integrally molded skin product by injection molding, which includes the steps of disposing the skin material in a mold, tightening the mold in which the skin material is disposed, and plasticizing a resin serving as a base material. The method includes a step of filling a space formed between a cavity and a plunger from a hot runner, and a step of filling the resin filled in the space into the cavity with the plunger at low pressure. .
また表皮材を配設した型を締める工程と、空間部に充填
された樹脂をプランジャーにょリキャビティ内に充填す
る工程を同時に行なうこともできる。Further, the step of tightening the mold provided with the skin material and the step of filling the plunger cavity with the resin filled in the space can be performed simultaneously.
さらに表皮材と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へ折曲げる工程を付加して構成して
もよい。Furthermore, a step may be added to bend the end portion where the skin material and the resin filled in the cavity are integrated toward the resin side.
［作用］
したがって、本発明方法によれば、基材となる可塑化さ
れた樹脂をホットランナ−から、−旦空間部に充填した
後、プランジャーによりキャビティ内へ低圧で導入する
ので、インサート材にかかる圧力を一定とすると共に、
圧力を下げてキャビティ内に樹脂を充填することができ
るので、表皮材にゆがみ、フオーム層の部分的な潰れ等
を生じないようにすることができる。また空間部におい
て樹脂材の温度を調整できるため、温度差による表皮材
の影響を少なくすることができる。[Function] Therefore, according to the method of the present invention, the plasticized resin serving as the base material is first filled into the space from the hot runner, and then introduced into the cavity by the plunger at low pressure, so that the insert material While keeping the pressure applied to constant,
Since the resin can be filled into the cavity by lowering the pressure, distortion of the skin material and partial collapse of the foam layer can be prevented. Furthermore, since the temperature of the resin material can be adjusted in the space, the influence of temperature differences on the skin material can be reduced.
さらに表皮材と樹脂が一体となった端部を樹脂側へ折曲
げると、折曲げ部が同一樹脂材同志の接合となり、接合
性が極めて良好となる。Furthermore, when the end portion where the skin material and the resin are integrated is bent toward the resin side, the bent portion becomes a bond between the same resin materials, resulting in extremely good bondability.
［実施例］
以−ド本発明方法の−・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] Hereinafter, an example of the method of the present invention will be described based on the drawings. Note that the members, arrangement, etc. described below do not limit the present invention, and can be variously modified within the scope of the spirit 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 explained using a vehicle pillar as an example of an integrally molded skin 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, and the molding apparatus S consists of a female mold 10 and a male mold 20, and the cavity 11 of the female mold 10 is used as a skin integrally molded product. It is recessed to match the external shape of the pillar P.
−・方雄型２０は、キャビテイ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
トランナ一部２２と連通している。そして上記ホットラ
ンナ一部２２がら空間部２１へ樹脂材料が注入される。- The Houyu mold 20 has approximately the center part of the cavity surface,
A space 21 is recessed, and this space 21 communicates with a hot runner portion 22 that heats and plasticizes the resin material that will become the base material 1 of the pillar P. Then, a resin material is injected into the space 21 through the hot runner portion 22.
また上記空間部２１には、射出プランジャー２３が上記
ホットプランナ一部２２の開口部２２ａより外側（第１
Ａ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
。Further, in the space 21, an injection plunger 23 is located outside the opening 22a of the hot planner part 22 (the first
The plunger 23 is configured to be able to slide within the space 21 by a hydraulic cylinder 24, and the plunger 23 is configured to be able to slide within the space 21, and pours the resin material injected into the space 21 into the cavity 11. Can be filled.
また上記雄型ｌＯ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。Further, at the end surface of the mating portion of the male mold 10 and the female mold 20, a skin press-cut portion 30 for cutting the end of the skin material 2 is formed, as shown in FIG. 1B.
そしてこの押切り部３０を挟んで、雄型ｌＯと雌型２０
との当接部３１と、キャビティ１１側との当接部３２を
それぞれクリアランスが異な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ｌｌ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。Then, the male die lO and the female die 20
The abutting portion 31 with the cavity 11 and the abutting portion 32 with the cavity 11 are configured to have different clearances, respectively. If this difference in clearance is provided, for example, if the clearance of the abutting part 31 is 0 and the clearance of the abutting part 32 on the cavity 11 side is 0.1 mm, the abutting part 32 side on the cavity 11 side will have a difference of 0.1 mm. A resin layer of 1 mm can be formed. Further, even when skin materials with different thicknesses are used, by providing a difference in clearance, it is possible to always form a resin thickness with a difference in clearance. Furthermore, since the excess skin material has been removed by the skin press-cutting part 30, the end where the resin layer that will become the base material 1 and the skin material 2 are joined is folded inward, and this folded part 3 is glued or welded. By doing so, the terminal portion can be made in good condition.
折り込み部３は、樹脂が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。Since the folded portion 3 is made of the same resin, 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 explained 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１
Ｄ図で示すような表皮一体成形品としての重両用ピラー
を製造する場合を示す、基材ｌ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とウレタンフオーム２ｂをラ
ミネートしたものを用いる。For the method of the invention, a first
The resin used as the base material 1 is polypropylene (PP), and the skin material 2 is polyvinyl chloride (PVC). ) 2a and urethane foam 2b are used.
第１Ｃ図のブロック図で、示すように、先ず、表皮材２
を雌型ｌＯ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）０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ｌとなる樹脂をホットラン
ナ−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、４１）１
）Ｔｈｌ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ｌｌ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ｌｌ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１６００〜２００℃の範囲
で、圧力は３０Ｋｇ／ｃｒｎ’ 〜１００Ｋｇ／ｃｍ”
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１０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 placed 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 with the skin material 2 placed thereon and the male mold 20 are clamped together. (Step B) At this time, the end portion of the skin material 2 is cut off by the push-cutting blade portion 30. Then, the resin that will become the base material l is injected from the hot runner 22 into the space 21 formed between the cavity 11 and the plunger 23 (step C). ,41)1
) Thl temperature and pressure can be adjusted to be lower. Then, in order to fill the cavity with low pressure,
The plunger 23 is actuated by the hydraulic cylinder 24 to fill the resin filled in the space 21 into the cavity 11 (step D). During the above steps B-D, the temperature of the resin from the space 21 to the cavity 11 increases. is in the range of 1600 to 200℃, and the pressure is 30Kg/crn' to 100Kg/cm"
Then open the male and female molds and take out the product (
In step E), the end of the product taken out is folded in as indicated by the chain line in Figure 1D, as shown by the arrow X in Figure 10,
The folded parts 3 are joined together (step F). At this time, the folded parts 3 become resin-to-resin joints, resulting in 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
ｌとなる樹脂をホットランナ−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、」−記第１Ｃ図で示す
工程Ｂ〜工程りにおいて、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１程り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. The resin that will become the material is transferred from the hot runner 22 to the cavity 11.
and the plunger 23 (step C), and in steps B to B shown in FIG. Injected into the space 21 when the clearance) is 2 to 5 mm,
The resin is extruded into the cavity 11 while the female mold 10 and the male mold 20 are clamped, and when the mold clamping is finished, the filling of the resin into the cavity 11 is completed. At this time, the plunger 23 can also be mechanically operated and filled using mold clamping pressure. In this way, step C is performed after step A, so that step B and about 1 step are performed at the same time. 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）とウレタンフオ
ームとのラミネート材の外に、布とウレタンフオームと
のラミネート材、ＰｖＣレザー、布とＰＰフオームとの
ラミネート材、ＰＶＣとＰＰフオ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。Note that as the resin used as the base material, ABS resin or the like can be used in addition to polypropylene (PP). In addition to laminate materials of polyvinyl chloride resin (PVC) and urethane foam, surface materials include laminate materials of cloth and urethane foam, PvC leather, laminate materials of cloth and PP foam, and PVC and PP foam. A laminate material, an olefin-based thermoplastic elastomer, etc. 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。In addition, since the present invention uses low-pressure injection molding in which the pressure of the resin injected in the space can be adjusted, the skin material can be disposed up to the clamping position. And since the molding is done under low pressure, the filled resin, such as urethane, does not fill up to the edges of the skin material, and even if the thickness of the skin material is changed, the overall thickness can be maintained by this thickness. plate pressure,
Weight etc. do not change.
［発明の効果］
以北のように、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。殊に表皮
材にフオ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 kept low and approximately constant, and the temperature is lowered, so that distortion etc. of the skin material is not caused. Does not occur. This is particularly noticeable in the case of laminate materials in which a foam layer is bonded to a skin material. Furthermore, using a conventional injection molding machine, it is only necessary to change the mold structure according to the product, increasing economic efficiency.
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。
ｌ・・・基材、 ２・・・表皮材、２ａ・・
・表皮、 ２ｂ・・・フオーム、３・・・折り
込み部、 １０・・・雌型、１１・・・キャビティ
、 ２０・・・雄型、２１・・・空間部、 ２
２・・・ホットランナ−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 the main part showing an outline of the device used in the method of the present invention, Fig. 1B is an enlarged view of the main part of the male-female joint in Fig. 1A, Fig. 1C is a block diagram, and Fig. 1D is FIG. 2 is a partial cross-sectional view of the molded product and a block diagram of another method. l...Base material, 2...Skin material, 2a...
- Epidermis, 2b... Form, 3... Folding part, 10... Female mold, 11... Cavity, 20... Male mold, 21... Space part, 2
2...Hot runner-23...Plunger, 24
...Hydraulic cylinder, P...Product (pillar), S...
・Molding equipment.
Claims (1)
体成形品の製造方法であって、前記表皮材を型内に配設
する工程と、該表皮材を配設した型を締める工程と、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からなる
射出成形による表皮一体成形品の製造方法。 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なう請求項１記載の射出成形
による表皮一体成形品の製造方法。 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る工程とからなる請
求項１、２記載の射出成形による表皮一体成形品の製造
方法。[Scope of Claims] 1. A method for manufacturing a skin-integrated product by injection molding, which integrates a skin material and a base material, comprising the steps of disposing the skin material in a mold, and disposing the skin material. a process of tightening the mold, a process of plasticizing the base material resin and filling it from the hot runner into the space formed between the cavity and the plunger, and a process of plasticizing the base material resin and filling the space formed between the cavity and the plunger with the resin filled in the space. A method for producing an integrally molded skin product by injection molding, which comprises the step of filling a cavity with a jar at low pressure. 2. Manufacturing a skin-integrated molded product by injection molding according to claim 1, wherein the step of tightening the mold in which the skin material is arranged and the step of filling the cavity with the resin filled in the space using a plunger are performed at the same time. Method. 3. The method of manufacturing an integrally molded skin product by injection molding according to claim 1 or 2, comprising the step of bending an end portion where the skin material and the resin filled in the cavity are integrated toward the resin side.
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 true JPH02103108A (en) | 1990-04-16 |
| JP2724378B2 JP2724378B2 (en) | 1998-03-09 |
Family
ID=17285746
Family Applications (1)
| 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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5281376A (en) * | 1990-10-12 | 1994-01-25 | Sumitomo Chemical Company, Limited | Method for producing polypropylene resin article having skin material lined with foamed layer |
| JP2009226889A (en) * | 2008-03-25 | 2009-10-08 | Toyota Motor Corp | Injection foaming molded article, injection foaming mold, and manufacturing method of injection foaming molded article |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63192015U (en) * | 1987-05-29 | 1988-12-12 |
-
1988
- 1988-10-13 JP JP63255944A patent/JP2724378B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63192015U (en) * | 1987-05-29 | 1988-12-12 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5281376A (en) * | 1990-10-12 | 1994-01-25 | Sumitomo Chemical Company, Limited | Method for producing polypropylene resin article having skin material lined with foamed layer |
| EP0729818A2 (en) * | 1990-10-12 | 1996-09-04 | Sumitomo Chemical Company Limited | Polypropylene resin article having skin material lined with foam layer |
| EP0729818A3 (en) * | 1990-10-12 | 1996-11-20 | Sumitomo Chemical Co | Polypropylene resin article having skin material lined with foam layer |
| JP2009226889A (en) * | 2008-03-25 | 2009-10-08 | Toyota Motor Corp | Injection foaming molded article, injection foaming mold, and manufacturing method of injection foaming molded article |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2724378B2 (en) | 1998-03-09 |
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