JPS63290715A - Manufacture of synthetic resin hollow molded product - Google Patents
Manufacture of synthetic resin hollow molded productInfo
- Publication number
- JPS63290715A JPS63290715A JP12553787A JP12553787A JPS63290715A JP S63290715 A JPS63290715 A JP S63290715A JP 12553787 A JP12553787 A JP 12553787A JP 12553787 A JP12553787 A JP 12553787A JP S63290715 A JPS63290715 A JP S63290715A
- Authority
- JP
- Japan
- Prior art keywords
- molded product
- blow
- mold
- injection
- injection molding
- 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
- 229920003002 synthetic resin Polymers 0.000 title claims abstract description 12
- 239000000057 synthetic resin Substances 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000001746 injection moulding Methods 0.000 claims abstract description 40
- 238000002347 injection Methods 0.000 claims abstract description 39
- 239000007924 injection Substances 0.000 claims abstract description 39
- 238000000071 blow moulding Methods 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 21
- 238000000465 moulding Methods 0.000 claims description 7
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 230000004927 fusion Effects 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010102 injection blow moulding Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene 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
- B29C45/14598—Coating tubular 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
- B29C45/14—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
- B29C45/14—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
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
-
- 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
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
- B29C2045/1445—Coating a portion of the article, e.g. the edge of the article injecting a part onto a blow moulded object
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (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）
この発明は合成樹脂製のブロー成形品の一部に他のもの
と連結若しくは接続するためのフランジやブラケットな
どの突起を設けた成形品を製造する方法に関する。[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a molded product in which a part of a blow-molded product made of synthetic resin is provided with protrusions such as flanges or brackets for connecting or connecting with other parts. Relating to a method of manufacturing.
（従来技術及び問題点フ
従来この種の中空成形品を製造する方法としては射出成
形法又はブロー成形法があり、特に中空成形品を他のも
のに取付けるためのフランジやブラケットなどの突起を
有するものを製造する方法としては、中空成形品全体を
射出成形法で行なう、或は前記突起部を別個に予め射出
成形しておき、これを中空成形部分のブロー成形時前に
、前記射出成形した突起部分をブロー成形金型の所定場
所にセットし、後前記中空成形部分をブロー成形してこ
の部分に前記突起物をインサートする方法が知られてい
る。(Prior art and problems) Conventionally, there are injection molding methods and blow molding methods for producing this type of hollow molded product. As a method for manufacturing the product, the entire hollow molded product may be injection molded, or the protrusion may be injection molded separately in advance, and this may be added to the injection molded part before the blow molding of the hollow molded part. A method is known in which a protrusion is set at a predetermined location in a blow molding die, and then the hollow molded part is blow molded and the protrusion is inserted into this part.
また中空成形部分と突起部分とを同一の成形金型でブロ
ー成形と射出成形とを同時乃至は若干の時差をおいて行
なう方法も、例えば特開昭５７−１９９２１８号公報に
よって知られている。或はブロー成形時に形成されるパ
リを利用しこれをブラケットに成形する方法も知られて
いる。Furthermore, a method of performing blow molding and injection molding of the hollow molded portion and the protruding portion using the same molding die at the same time or with a slight time difference is also known, for example, from JP-A-57-199218. Alternatively, there is also known a method of forming a bracket by using the fringes formed during blow molding.
然し射出成形法で殊に大型のものや細長いもの全体を成
形するには、金型及び射出成形機が大型化し、能率も悪
くコスト高となって実用性に乏しい。However, when injection molding is used to mold a large or elongated product in its entirety, the mold and injection molding machine become large, inefficient, and costly, making it impractical.
射出成形された突起部をブロー成形時にインサートする
方法においては射出成形の精度を高くして製造しなけれ
ばならず、またこれらをブロー成形金型にセットする作
業は中々面倒で自動化も容易でなく、しかも既に冷却し
ているのでブロー成形部分と融着させるために再度加熱
しなければならず、剰えこれら画部分の結合力が充分で
はない。In the method of inserting injection molded protrusions during blow molding, the injection molding must be manufactured with high precision, and the work of setting these into the blow molding mold is quite tedious and is not easy to automate. Moreover, since it has already been cooled, it must be heated again to fuse it with the blow-molded parts, and the bonding strength between these parts is not sufficient.
従って結合力向上の為に射出成形品の結合部分に掛合用
の凹凸部や孔を設けたものをインサートする方法も知ら
れているが、この部分の成形費用がますます嵩み経済的
な理由によって普及しない。Therefore, in order to improve the bonding strength, a method is known in which inserts are provided in the joint part of the injection molded product with recesses and holes for engagement, but the cost of molding this part increases and is uneconomical. It does not become popular due to
また前述の同一金型内で射出成形とブロー成形とを同時
的に行なう成形法においては、ブロー成形時にパリソン
の一部が射出成形金型部に膨張したり、射出成形時の圧
力によって先に成形されたブロー成形部分を歪曲させる
こともあり、実用的な成形品を能率よく成形出来るまで
には至っていない。In addition, in the above-mentioned molding method in which injection molding and blow molding are performed simultaneously in the same mold, part of the parison may expand into the injection mold part during blow molding, or the parison may expand due to the pressure during injection molding. Since the blow-molded part may be distorted, it has not yet reached the point where practical molded products can be efficiently molded.
またブロー成形時のパリをブラケットとする方法は中空
成形品の軸線を含む方向のものは作り易いが他の方向に
突出するものは不可能か或は金型が極めて複雑となるし
、突起物の厚みもパリソンの厚みに支配され所望の厚み
に成型することは出来ない。In addition, using the bracket as a bracket during blow molding makes it easy to make products that protrude in directions that include the axis of the hollow molded product, but it is impossible to make products that protrude in other directions, or the mold becomes extremely complicated. The thickness is also controlled by the thickness of the parison, and cannot be molded to a desired thickness.
（解決しようとする問題点）
この発明は叙上の様な従来技術の欠点を改善し、ブロー
成形法と射出成形法を併用し、射出成形部分の金型を簡
素化できるようにし、且つブロー成形時の熱エネルギー
を有効に利用し中空成形部と突起部との結合力の高い製
品を低コストで製造するための方法を提供することであ
る。(Problems to be Solved) This invention improves the drawbacks of the prior art as described above, uses blow molding and injection molding in combination, makes it possible to simplify the mold of the injection molded part, and It is an object of the present invention to provide a method for manufacturing a product with high bonding strength between a hollow molded part and a projection part at a low cost by effectively utilizing thermal energy during molding.
（問題点を解決するための手段）
この発明はブロー成形後のブロー成形品がそのブロー成
形金型の中において離型に充分な固化温度であって、こ
れに近い温度まで低下したときに、前記ブロー成形品を
ブロー成形金型から離型し、つぎに適温に予熱してある
射出成形金型に前記加熱状態にあるブロー成形品を嵌合
し、このブロー成形品の一部の壁面と前記射出成形金型
によって少なくとも一つの突起形成用射出成形空間を形
成し、後ブロー成形品が殆ど温度低下しないうちに前記
射出成形空間にブロー成形品と熱溶着可能な合成樹脂を
射出し、ブロー成形品と射出成形部とを射出成形金型内
で一体化し、後射出成形金型より成形品全体を離型し、
ブロー成形品の一部に突起を形成することを特徴とする
合成樹脂製中空成形品の製造方法とすることによって問
題点を解決した。(Means for Solving the Problems) This invention provides that when the blow molded product after blow molding is at a solidification temperature sufficient for mold release in the blow molding die, and when the temperature decreases to a temperature close to this, The blow molded product is released from the blow molding mold, and then the heated blow molded product is fitted into an injection mold that has been preheated to an appropriate temperature, and a part of the wall surface of the blow molded product is At least one injection molding space for forming a protrusion is formed by the injection molding die, and a synthetic resin that can be thermally welded to the blow molded product is injected into the injection molding space before the temperature of the blow molded product substantially decreases. The molded product and the injection molded part are integrated in the injection mold, and the entire molded product is then released from the injection mold.
The problem was solved by creating a method for manufacturing a synthetic resin hollow molded product, which is characterized by forming a protrusion on a part of the blow molded product.
（実施例）
この発明の具体的な方法をその装置と共に次に説明する
。(Example) A specific method of the present invention will be described below together with its apparatus.
先ずブロー成形機Ａと射出成形機Ｂを接近して配備する
。前記ブロー成形機Ａには成形すべきブロー成形品１０
を成形するためのブロー成形金型２０を取付ける。他方
前記射出成形機Ｂには前記ブロー成形品１０を嵌合乃至
位置決めでき、前記ブロー成形品１ｏに結合すべき突起
１１を形成するための射出成形キャビティー３１が形成
してある射出金型３ｏが取付けである。First, blow molding machine A and injection molding machine B are placed close to each other. The blow molding machine A has a blow molded product 10 to be molded.
A blow molding mold 20 for molding is attached. On the other hand, the injection molding machine B has an injection mold 3o in which the blow molded product 10 can be fitted or positioned, and an injection mold cavity 31 for forming the protrusion 11 to be coupled to the blow molded product 1o is formed. is the installation.
これら装置を用いてこの発明の方法を実施するには、先
ずブロー成形機Ａによってブロー成形金型２０のブロー
成形キャビティー２１内にパリソンＰを供給し、所定の
ブロー成形品１０を成形し、このブロー成形品１０がブ
ロー成形金型２ｏ内のブロー成形キャビティー２１にお
いて、この金型２０から離型可能な温度であってこれに
近い温度範囲（７０℃乃至９５℃）までブロー成形品１
０及びブロー成形金型２０の温度が低下したところで、
前記ブロー成形品１０をその金型２０より離型する。To carry out the method of the present invention using these devices, first, the parison P is supplied into the blow molding cavity 21 of the blow molding die 20 by the blow molding machine A, and a predetermined blow molded product 10 is molded. The blow molded product 10 is heated in the blow molding cavity 21 in the blow molding die 2o to a temperature at which it can be released from the mold 20 and in a temperature range close to this (70°C to 95°C).
0 and the temperature of the blow molding die 20 have decreased,
The blow molded product 10 is released from the mold 20.
なお、離型温度は、ブロー成形される樹脂の同化温度に
支配されるもので同化温度が高いものは９０℃近く、低
いものは７０℃近くまで冷却したときに離型する例えば
ポリエチレンのときは７５℃乃至８０℃程度が望ましい
。In addition, the mold release temperature is controlled by the assimilation temperature of the resin to be blow molded, and those with a high assimilation temperature are close to 90°C, and those with a low assimilation temperature are released when cooled to around 70°C. For example, in the case of polyethylene, the mold release temperature is controlled by the assimilation temperature of the resin to be blow molded. The temperature is preferably about 75°C to 80°C.
次に前記ブロー成形品１０の南端の捨て内部１２を素早
く切り落とし、前記射出成形機Ｂに取付けである少なく
とも５０℃程に予熱してある射出成形金型３０の射出成
形キャビティー３１に前記ブロー成形品１ｏを嵌合させ
る。Next, the sacrificial interior 12 at the south end of the blow molded product 10 is quickly cut off, and the blow molded product is placed in the injection molding cavity 31 of an injection mold 30 that is preheated to at least 50° C. and is installed in the injection molding machine B. Fit item 1o.
このブロー成形品１０をブロー成形金型２０から離型し
、射出成形金型３ｏに移動させる手段は作業者の手作業
によっても良いが、作業ロボットを側層する方法の方が
安全で作業能率が一定になる。The blow-molded product 10 can be released from the blow-molding mold 20 and moved to the injection mold 3o manually by the operator, but a method using a working robot as a side layer is safer and more efficient. becomes constant.
次いで、射出成形金型３０を型締し、前記ブロー成形品
１０の一部と射出金型キャビティ３１とによって突起を
形成するための射出成形空間３２を形成し、前記ブロー
成形品１ｏの温度が前記温度範囲からあまり低下しない
うちに、前記射出成形空間３２に射出成形機Ｂによって
前記ブロー成形品１０と同質乃至熱溶着可能な材質の合
成樹脂を射出して、前記ブロー成形品１０の一部に射出
成形によって突起１１を一体融着成形し、これらが充分
に冷却された後、突起付きの中空成形品１５全体を射出
成形金型３０から脱型し目的の中空成形品１５を得る。Next, the injection molding die 30 is clamped, an injection molding space 32 for forming a protrusion is formed by a part of the blow molded product 10 and the injection mold cavity 31, and the temperature of the blow molded product 1o is increased. Before the temperature drops too much from the above temperature range, a synthetic resin of the same quality as the blow molded product 10 or a material that can be thermally welded is injected into the injection molding space 32 by the injection molding machine B to form a part of the blow molded product 10. The protrusions 11 are integrally fused and molded by injection molding, and after they are sufficiently cooled, the entire hollow molded product 15 with the protrusions is removed from the injection mold 30 to obtain the desired hollow molded product 15.
ブロー成形品１０と射出成形部の接着性を向上させるた
めに、ブロー成形品１０を射出成形金型３０にセットす
る前に、結合面に接着剤を塗布してもこの発明としては
同一である。In order to improve the adhesion between the blow molded product 10 and the injection molded part, the invention is the same even if an adhesive is applied to the bonding surface before the blow molded product 10 is set in the injection mold 30. .
前述の射出成形金型３０は製造すべき成形品１５が小型
の場合や突起１１が多数ある場合においては、少なくと
も二つの例えば下型３０ａと上型３０ｂ （第５図ａ参
照）でブロー成形品１０を完全に覆うもの、またブロー
成形品１０が複雑な形状のものや長尺もののときは、前
記突起（フランジ１３、ブラケット１４）１１を形成す
べき部分のみの部分金型３３（第５図す参照）を用いる
。When the molded product 15 to be manufactured is small or has a large number of protrusions 11, the injection molding die 30 described above is used to blow mold the product using at least two molds, for example, a lower mold 30a and an upper mold 30b (see FIG. 5a). 10, or when the blow molded product 10 has a complicated shape or is long, a partial mold 33 (Fig. (see ).
前述の射出成形機Ｂは射出すべき場所が数個所あるとき
は、その押出機３４より連なる可撓パイプ３５の先端３
６の射出ノズル３８を作業ロボットにより順次移動させ
て、射出成形金型３０の注入口３７に射出しても良いし
、前記押出機３４に数個の射出ノズル３８群を設けてお
き、−斉に射出するようにしてもこの発明としては同一
つである。In the above-mentioned injection molding machine B, when there are several places to inject, the tip 3 of the flexible pipe 35 connected from the extruder 34 is used.
The injection nozzles 38 of 6 may be sequentially moved by a working robot to inject into the injection port 37 of the injection mold 30, or the extruder 34 may be provided with several groups of injection nozzles 38, and the injection nozzles 38 may be moved simultaneously by a working robot. The present invention is the same even if the injection is made to be injected separately.
（効 果）
取上のように構成しているこの発明の方法においては、
成形すべき成形品１５の主要部を成すブロー成形品１０
はブロー成形法で成形するから、この部分の成形には中
子が不要であり、次に射出成形金型３０に嵌め込むもの
は前記突起を有する中空成形品１５の主要部を成す部分
がブロー成形品１０であるから、部品の大きさも一般に
大きく、特殊な中空成形品１５を除いては射出成形部分
が数個所ある場合であっても唯一のブロー成形品１０を
射出成形金型３０に嵌め込む作業だけで良く、人手によ
る作業であろうと、自動化されようと作業工数は極めて
簡素化される。(Effect) In the method of this invention configured as mentioned above,
Blow molded product 10 forming the main part of molded product 15 to be molded
Since this part is molded by the blow molding method, a core is not required for molding this part, and the part that forms the main part of the hollow molded product 15 having the projections is then fitted into the injection mold 30. Since it is a molded product 10, the size of the part is generally large, and even if there are several injection molded parts except for a special hollow molded product 15, only the blow molded product 10 is fitted into the injection mold 30. Only a lot of work is required, and whether the work is done manually or automated, the amount of work required is extremely simplified.
更に射出成形金型３０は必ずしも、前記ブロー成形品１
０全体を覆う下型３０ａ、上型３０ｂでなくとも前記突
起１１のある部分のみの部分金型３３で充分であり、さ
らに射出成形空間３２はその一部が必ず前記ブロー成形
品１ｏで構成されるから、射出成形品を先ず成型しこれ
をブロー成形時にインサートする在来方法の射出成形金
型よす金型数が少なくてよい。Furthermore, the injection mold 30 does not necessarily have to be used to form the blow molded product 1.
Even if the lower mold 30a and upper mold 30b do not cover the entire mold 0, a partial mold 33 for only the part where the protrusion 11 is located is sufficient, and furthermore, a part of the injection molding space 32 must be made up of the blow molded product 1o. Therefore, the number of molds required is smaller than that of the conventional injection molding method in which the injection molded product is first molded and then inserted during blow molding.
殊にこの方法においてはブロー成形時の熱エネルギーを
有効に利用しているから、熱経済にすぐれブロー成形部
と射出成形部との結合も強固となる。In particular, in this method, since thermal energy during blow molding is effectively utilized, thermal economy is excellent and the bond between the blow molded part and the injection molded part is strong.
よってこの発明の方法においては管の両端のフランジ、
管の軸線と直角方向に肩平なブラケットあるいは管の一
部を肉厚１６にしたり、枝管１７の成形などを容易に行
なえる。Therefore, in the method of this invention, the flanges at both ends of the pipe,
It is easy to make a flat-shouldered bracket or a part of the tube in a direction perpendicular to the axis of the tube to have a wall thickness of 16, or to form a branch tube 17.
図はこの発明に係わるものを示すものであって、第１図
はこの発明の方法を実施するための装置の一例を示す外
観配置図、第２図はブロー成形金型にパリソンを挿入し
ている工程を示す側面図、第３図はブロー成形後の状態
を示す縦断側面図、第４図はブロー成形後中空成形品を
ブロー成形金型から離型した状態の縦断側面図、第５図
ａはブロー成形品を完全に全部嵌合できる射出成形金型
に嵌合した状態の縦断側面図、第５図すはブロー成形品
を部分金型に嵌合した状態の縦断側面図、第６図は成形
すべき突起付き中空成形品の一例を示す斜視図である。
図中の主な符号
Ａ・・・・・・・・・ブロー成形機、Ｂ・・・・・・・
・・射出成形機、Ｐ・・・・・・・・・パリソン、
１０・・・・・・ブロー成形品、１２・・・・・・槽内
、１３・・・・・・フランジ、 １４・・・・・・
ブラット、１５・・・・・・突起付中空成形品、
２０・・・・・・ブロー成形金型、
２１・・・・・・ブロー成形キャビティ、３０・・・・
・・射出成形金型、３０ａ・・・下型、３０ｂ・・・上
型、
３１・・・・・・射出成形キャビティ、３２・・・・・
・射出成形空間、３３・・・・・・部分金型。The drawings show things related to this invention, and Fig. 1 is an external layout diagram showing an example of an apparatus for carrying out the method of this invention, and Fig. 2 shows a parison inserted into a blow molding mold. FIG. 3 is a longitudinal sectional side view showing the state after blow molding, FIG. 4 is a longitudinal sectional side view of the hollow molded product released from the blow molding die after blow molding, and FIG. 5 Fig. 5 is a longitudinal side view of the blow-molded product fitted into a partial mold; The figure is a perspective view showing an example of a hollow molded product with projections to be molded. Main symbols in the diagram A...Blow molding machine, B...
... Injection molding machine, P ... ... Parison, 10 ... Blow molded product, 12 ... Inside tank, 13 ... Flange, 14.・・・・・・
Brat, 15...Hollow molded product with protrusion, 20...Blow molding mold, 21...Blow molding cavity, 30...
...Injection mold, 30a...Lower mold, 30b...Upper mold, 31...Injection molding cavity, 32...
・Injection molding space, 33...Partial mold.
Claims (1)
の中において離型に充分な固化温度であって、これに近
い温度まで低下したときに、前記ブロー成形品をブロー
成形金型から離型し、つぎに適温に予熱してある射出成
形金型に前記加熱状態にあるブロー成形品を嵌合し、こ
のブロー成形品の一部の壁面と前記射出成形金型によっ
て少なくとも一つの突起形成用射出成形空間を形成し、
後ブロー成形品が殆ど温度低下しないうちに前記射出成
形空間にブロー成形品と熱溶着可能な合成樹脂を射出し
、ブロー成形品と射出成形部とを射出成形金型内で一体
化し、後射出成形金型より成形品全体を離型することを
特徴とする合成樹脂製中空成形品の製造方法。 ２）前記ブロー成形品がそのブロー成形金型の中におい
て離型に充分な固化温度とは７５℃乃至９５℃好ましく
は８０℃乃至９０℃とする方法であることを特徴とする
特許請求の範囲第１項記載の合成樹脂製中空成形品の製
造方法。 ３）前記射出成形金型はブロー成形品全体が嵌合できる
キャビティが形成してあるものを用いる方法であること
を特徴とする特許請求の範囲第１項記載の合成樹脂製中
空成形品の製造方法。 ４）前記射出成形金型はブロー成形品に設けるべき突起
に対応した部分のみの部分金型に、形成すべき突起形状
に対応したキャビティを形成したものを用い、これら部
分金型に前記ブロー成形品を嵌合するる方法であること
を特徴とする特許請求の範囲第１項記載の合成樹脂製中
空成形品の製造方法。[Scope of Claims] 1) When the blow molded product after blow molding is at a solidification temperature sufficient for mold release in the blow molding mold, and when the temperature has decreased to a temperature close to this, the blow molded product is The mold is released from the blow molding mold, and then the heated blow molded product is fitted into an injection mold that has been preheated to an appropriate temperature, and a part of the wall surface of this blow molded product and the injection mold are heated. forming at least one injection molding space for forming a protrusion;
A synthetic resin that can be thermally welded to the blow molded product is injected into the injection molding space before the temperature of the post blow molded product has almost decreased, the blow molded product and the injection molded part are integrated in the injection mold, and the post injection molding is performed. A method for manufacturing a synthetic resin hollow molded product, characterized by releasing the entire molded product from a molding die. 2) Claims characterized in that the solidification temperature of the blow-molded product in the blow-molding mold is 75°C to 95°C, preferably 80°C to 90°C. 2. A method for producing a synthetic resin hollow molded product according to item 1. 3) Manufacturing a synthetic resin hollow molded product according to claim 1, characterized in that the injection molding die has a cavity in which the entire blow molded product can fit. Method. 4) The injection mold is a partial mold in which a cavity corresponding to the shape of the projection to be formed is formed in a partial mold only for the part corresponding to the projection to be provided on the blow molded product, and the blow molding is performed in these partial molds. A method for manufacturing a synthetic resin hollow molded article according to claim 1, characterized in that the method is a method of fitting the articles together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12553787A JPS63290715A (en) | 1987-05-22 | 1987-05-22 | Manufacture of synthetic resin hollow molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12553787A JPS63290715A (en) | 1987-05-22 | 1987-05-22 | Manufacture of synthetic resin hollow molded product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63290715A true JPS63290715A (en) | 1988-11-28 |
| JPH0576901B2 JPH0576901B2 (en) | 1993-10-25 |
Family
ID=14912649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12553787A Granted JPS63290715A (en) | 1987-05-22 | 1987-05-22 | Manufacture of synthetic resin hollow molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63290715A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6446594U (en) * | 1987-09-17 | 1989-03-22 | ||
| JPH02225013A (en) * | 1989-02-27 | 1990-09-07 | Kyosei:Kk | Method for applying corrosion protection to pipe joints |
| JPH05147069A (en) * | 1991-11-26 | 1993-06-15 | Yazaki Kako Kk | Method for forming rib or the like to resin coated steel pipe |
| EP0567702A1 (en) | 1992-05-01 | 1993-11-03 | Abc Group | Method for molding manifold for automotive vehicle |
| US5266262A (en) * | 1991-07-19 | 1993-11-30 | Mitoyo Resin Co. Ltd. | Method for injection molding a large thickness flange at end of blow molding tube |
| WO1996000646A1 (en) * | 1994-06-30 | 1996-01-11 | Steere Enterprises, Inc. | Clean air ducts and methods for the manufacture thereof |
| US6041824A (en) * | 1994-06-30 | 2000-03-28 | Steere Enterprises, Inc. | Clean air ducts and methods for the manufacture thereof |
| WO2014122413A1 (en) * | 2013-02-08 | 2014-08-14 | Inergy Automotive Systems Research (Société Anonyme) | Method for producing hollow bodies, mould for producing a hollow body and method for producing a fuel tank |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51139875A (en) * | 1975-05-28 | 1976-12-02 | Kyowa Electric & Chemical | Plocess for making vessels |
| JPS56166012A (en) * | 1980-05-27 | 1981-12-19 | Nippon Valqua Ind Ltd | Formation of flange part to thermofusing fluoroplastic blank pipe |
| JPS6182091A (en) * | 1984-05-23 | 1986-04-25 | クミ化成株式会社 | Hollow body with joint section |
| JPS61190450A (en) * | 1985-02-12 | 1986-08-25 | 株式会社吉野工業所 | Cap and manufacture thereof |
| JPS62270315A (en) * | 1986-05-20 | 1987-11-24 | Toyo Seikan Kaisha Ltd | Manufacture of oriented polyester vessel |
-
1987
- 1987-05-22 JP JP12553787A patent/JPS63290715A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51139875A (en) * | 1975-05-28 | 1976-12-02 | Kyowa Electric & Chemical | Plocess for making vessels |
| JPS56166012A (en) * | 1980-05-27 | 1981-12-19 | Nippon Valqua Ind Ltd | Formation of flange part to thermofusing fluoroplastic blank pipe |
| JPS6182091A (en) * | 1984-05-23 | 1986-04-25 | クミ化成株式会社 | Hollow body with joint section |
| JPS61190450A (en) * | 1985-02-12 | 1986-08-25 | 株式会社吉野工業所 | Cap and manufacture thereof |
| JPS62270315A (en) * | 1986-05-20 | 1987-11-24 | Toyo Seikan Kaisha Ltd | Manufacture of oriented polyester vessel |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6446594U (en) * | 1987-09-17 | 1989-03-22 | ||
| JPH02225013A (en) * | 1989-02-27 | 1990-09-07 | Kyosei:Kk | Method for applying corrosion protection to pipe joints |
| US5266262A (en) * | 1991-07-19 | 1993-11-30 | Mitoyo Resin Co. Ltd. | Method for injection molding a large thickness flange at end of blow molding tube |
| JPH05147069A (en) * | 1991-11-26 | 1993-06-15 | Yazaki Kako Kk | Method for forming rib or the like to resin coated steel pipe |
| EP0567702A1 (en) | 1992-05-01 | 1993-11-03 | Abc Group | Method for molding manifold for automotive vehicle |
| US5445782A (en) * | 1992-05-01 | 1995-08-29 | Abc Group | Method of molding manifold for automotive vehicle |
| WO1996000646A1 (en) * | 1994-06-30 | 1996-01-11 | Steere Enterprises, Inc. | Clean air ducts and methods for the manufacture thereof |
| US5529743A (en) * | 1994-06-30 | 1996-06-25 | Steere Enterprises, Inc. | Methods for the manufacture of clean air ducts |
| US6041824A (en) * | 1994-06-30 | 2000-03-28 | Steere Enterprises, Inc. | Clean air ducts and methods for the manufacture thereof |
| WO2014122413A1 (en) * | 2013-02-08 | 2014-08-14 | Inergy Automotive Systems Research (Société Anonyme) | Method for producing hollow bodies, mould for producing a hollow body and method for producing a fuel tank |
| FR3001911A1 (en) * | 2013-02-08 | 2014-08-15 | Inergy Automotive Systems Res | METHOD FOR MANUFACTURING HOLLOW BODIES OF PLASTIC MATERIAL COMPRISING AT LEAST ONE COMPONENT |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0576901B2 (en) | 1993-10-25 |
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