JPH01280526A - Structure of connecting part of co-extrusion molding device - Google Patents
Structure of connecting part of co-extrusion molding deviceInfo
- Publication number
- JPH01280526A JPH01280526A JP63110923A JP11092388A JPH01280526A JP H01280526 A JPH01280526 A JP H01280526A JP 63110923 A JP63110923 A JP 63110923A JP 11092388 A JP11092388 A JP 11092388A JP H01280526 A JPH01280526 A JP H01280526A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- die
- inlet end
- adapter
- outlet end
- 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.)
- Pending
Links
- 238000001125 extrusion Methods 0.000 title abstract 3
- 229920005989 resin Polymers 0.000 claims abstract description 38
- 239000011347 resin Substances 0.000 claims abstract description 38
- 238000000465 moulding Methods 0.000 claims description 10
- 238000000071 blow moulding Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 2
- 229920003002 synthetic resin Polymers 0.000 description 11
- 239000000057 synthetic resin Substances 0.000 description 11
- 238000004891 communication Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000000155 melt Substances 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、押出機とダイとの間の、溶融合成樹脂通路
における接続部の構造の技術分野で利用されるものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention is used in the technical field of the structure of a connection in a molten synthetic resin passage between an extruder and a die.
（従来の技術）
この明細書において、共押出成形装置とは、多層シート
成形装置、多層ブロー成形装置、その他、例えば両耳部
と中央部とが材質を異にしている帯状材を成形する、異
形成形装置などのように、２種以上の合成樹脂を押出し
て成形する装置を総称するものである。(Prior Art) In this specification, a coextrusion molding device refers to a multilayer sheet molding device, a multilayer blow molding device, and other devices that mold a band-like material in which both ears and the center portion are made of different materials. This is a general term for equipment that extrudes and molds two or more types of synthetic resins, such as a variant molding equipment.
共押出成形装置に使用されるダイにおいては、溶融合成
樹脂を圧入するための、複数個の押出機が接続されてい
る。A die used in a coextrusion molding apparatus is connected to a plurality of extruders for press-fitting molten synthetic resin.
このような従来の共押出成形装置においては、各押出機
からの合成樹脂を入れろダイの入口端部は、その周上に
分布開口され、各押出機とこれら入口端部は、各個に締
結されている。In such a conventional coextrusion molding apparatus, the inlet end of the synthetic resin feeding die from each extruder is opened distributed around its circumference, and each extruder and these inlet ends are individually fastened. ing.
（発明が解決しようとする問題点）
従って、従来の共押出成形装置を全体のシステムとして
考察した場合、構造が複雑、さらに保守性も良くない。(Problems to be Solved by the Invention) Therefore, when considering the conventional coextrusion molding apparatus as an entire system, the structure is complicated and maintainability is also poor.
また、押出機とダイ間の着脱に、時間がかかり、ダイの
手入れや材料変更時などの組替え時の作業性が悪いもの
である。In addition, it takes time to attach and detach the extruder and the die, resulting in poor workability when cleaning the die or changing the arrangement when changing materials.
この発明においては、前記の問題点を解決しようとする
ものである。This invention attempts to solve the above-mentioned problems.
（問題点を解決するだめの手段）
この発明において、前記の問題点を解決するためにとら
れた手段を、第１図を参照しつつ説明する。(Means for Solving the Problems) Means taken to solve the above problems in the present invention will be explained with reference to FIG. 1.
共押出成形用のダイ１には、複数の各樹脂入口端部２．
２−−一が開口している。一方これらの樹脂入口端部２
．２−−−に対応して、その各樹脂出口端部４．４−−
−が接続される押出機３゜３−ｍ−が設けられている。The coextrusion die 1 includes a plurality of resin inlet ends 2.
2--1 is open. On the other hand, these resin inlet ends 2
．． 2--, its respective resin outlet end 4.4--
- is connected to an extruder 3°3-m-.
そしてこの接続される個所の接続部５には、アダプター
６が介設されている。このアダプター６には、人口端６
ａと出口端６ｂとが形成されており、人口端５ａには、
押出機３の各樹脂出口端部４に対応した各流入口６Ｃが
形成される一方、出口端６ｂにはこれら流入口６Ｃに連
通していると共に、多層プロー成形機１の各樹脂入口端
部２．２−−−に対応した流出口６ｄが形成されている
。An adapter 6 is interposed at the connection portion 5 at this connection point. This adapter 6 has a population end 6
a and an exit end 6b are formed, and the population end 5a has a
Each inlet 6C corresponding to each resin outlet end 4 of the extruder 3 is formed, while the outlet end 6b is connected to these inlets 6C, and each resin inlet end of the multilayer blow molding machine 1 is connected to the inlet 6C. An outlet 6d corresponding to 2.2 is formed.
（作用） 以下、前記手段による作用につき述べる。(effect) The effects of the above means will be described below.
押出機３．３−−−は、それぞれ異なった合成樹脂を溶
融して、樹脂出口端部４より、アダプター６の流入口６
Ｃに圧送する。この流入口６Ｃより圧送された溶融合成
樹脂は、流入口６Ｃに連通した流出口６ｄより、ダイ１
のこの溶融合成樹脂を受入れるべき樹脂入口端部２に圧
入される。か（して、ダイ１の各樹脂入口端部２には、
それぞれ必要な種類の溶融合成樹脂が、アダプター６を
径由して押出機３から供給されるものである。The extruder 3.3 melts different synthetic resins and passes them from the resin outlet end 4 to the inlet 6 of the adapter 6.
Force feed to C. The molten synthetic resin pressure-fed from the inlet 6C is transferred to the die 1 from the outlet 6d communicating with the inlet 6C.
is press-fitted into the resin inlet end 2 which is to receive the molten synthetic resin. (Then, each resin inlet end 2 of the die 1 has a
Each required type of molten synthetic resin is supplied from the extruder 3 via an adapter 6.
（実施例）
以下この発明の実施例について詳述する。以下の実施例
では、共押出成形装置のうちの、多層ブロー成形装置に
ついての実施例であると理解されたい。(Example) Examples of the present invention will be described in detail below. It is to be understood that the following examples relate to a multilayer blow molding apparatus, which is a coextrusion molding apparatus.
多層ブロー成形装置に用いられるダイ１は、４種の溶融
合成樹脂を６層に積層して、成形押し出すように構成さ
れている。そして、その樹脂入口端部２．２−−一はダ
イ１の各層毎に設げられ、第１図図示のように、２個所
に設けられた入口座２ａ、２参に各３個ずつの２群にわ
けて設けられている。なお、平面図である第１図におい
て、片方の入口座２ａにおいては、３個の樹脂入口端部
２ａが水平方向に並列され、他方の入口座２ａには、３
個の樹脂入口端部２ａが垂直方向に並列されて、図では
重なって図示されているものである。The die 1 used in the multilayer blow molding apparatus is configured to laminate six layers of four types of molten synthetic resins and extrude them. The resin inlet end 2.2--1 is provided for each layer of the die 1, and as shown in FIG. It is divided into two groups. In FIG. 1, which is a plan view, in one input port 2a, three resin inlet ends 2a are arranged in parallel in the horizontal direction, and in the other input port 2a, three resin inlet ends 2a are arranged in parallel in the horizontal direction.
The resin inlet ends 2a are vertically arranged in parallel and are shown overlapping in the figure.
以下には、片方の入口座２ａ近辺の詳細につき、第２図
以下をも参照して詳述する。Below, details of the vicinity of one of the deposit accounts 2a will be explained in detail with reference to FIG. 2 and subsequent figures.
この実施例全体としては４種の溶融合成樹脂に対応して
、１個ずつの、計４個の、公知の押出機３が、アダプタ
ー６の入口端６ａに対して、ねじ手段３８により℃接続
されている。In this embodiment as a whole, four known extruders 3, one for each of the four types of molten synthetic resins, are connected to the inlet end 6a of the adapter 6 by screw means 38 at 0.degree. has been done.
アダプター６は、押出機側６ｅと、ダイ側６ｆとに分割
され、ノックビン６ｇで相互の位置決めがなされた状態
で、ポル）６ｈで一体化されている。そして２個の流入
口６Ｃと、３個の流出口６ｄとの間には、連通路６ｊが
形成される。この連通路６ｊは、押出機側６ｅとダイ側
６ｆとの合わせ面に溝として形成されており、しかも、
第３図図示のように、一方（第２図および第３図におい
て下側）の流入口６Ｃは、並列した３個の流出口６ｄの
うち左右端（第２図および第３図において上下端）の２
個の流出口６ｄに分岐連通され、他方の流入口６Ｃは、
中央の流出口６ｄに連通されている。The adapter 6 is divided into an extruder side 6e and a die side 6f, which are integrated by a pin 6h, with mutual positioning being performed by a knock pin 6g. A communication path 6j is formed between the two inflow ports 6C and the three outflow ports 6d. This communication path 6j is formed as a groove on the mating surface of the extruder side 6e and the die side 6f, and
As shown in FIG. 3, one (lower side in FIGS. 2 and 3) inlet 6C is located at the left and right ends (upper and lower ends in FIGS. 2 and 3) of the three parallel outlet ports 6d. ) no 2
The other inflow port 6C is branched into communication with two outflow ports 6d, and the other inflow port 6C is
It communicates with the central outlet 6d.
アダプター６と、ダイ１０入口座２ａとの間は、連結管
７で連結されている。連結管７は、アダプター側７ａと
、ダイ側γｂとに分割され、アダプター側７ａとアダプ
ター６の出口端６ｂとはボルトＩＣで、またダイ側７ｂ
とダイ１の入口座２ａとは、ポル）７ｄで締結されてい
る。さらにアダプター側７ａとダイ側７ｂとの接続部は
、フランジ７ｅと７ｆが形成されており、これらフラン
ジ７ｅ７「は、クイッククランプ手段８によって締結さ
れている。The adapter 6 and the die 10 receiving account 2a are connected by a connecting pipe 7. The connecting pipe 7 is divided into an adapter side 7a and a die side γb, and the adapter side 7a and the outlet end 6b of the adapter 6 are connected by a bolt IC, and the die side 7b
and Dai 1's deposit account 2a are concluded in Pol) 7d. Furthermore, flanges 7e and 7f are formed at the connection portion between the adapter side 7a and the die side 7b, and these flanges 7e7'' are fastened together by a quick clamp means 8.
誌
連線管７には、各樹脂入口端部２と流出口６ｄとの間を
連通ずる樹脂通路７ｇが穿設される。これら樹脂通路７
ｇのうち、左右端（図において上下端）に位置する樹脂
通路７ｇには、流量調整弁９が設けられている。流量調
整弁９は、弁棒９ａを出し入れさせることにより、樹脂
通路７ｇの流路面積を極部的に絞り、流路抵抗を変化さ
せる。The magazine communication pipe 7 is provided with a resin passage 7g that communicates between each resin inlet end 2 and the outlet 6d. These resin passages 7
A flow rate regulating valve 9 is provided in the resin passage 7g located at the left and right ends (upper and lower ends in the figure) of the resin passageway 7g. The flow rate regulating valve 9 partially narrows the flow area of the resin passage 7g by moving the valve stem 9a in and out, thereby changing the flow resistance.
か（して、アダプター６における流入口６Ｃと流出０６
６間の分岐された連通路６ｊの長さの長短や形状の相違
などによる、溶融合成樹脂の流れの抵抗の大小を均等化
して、製品の品質の向上に資するものである。(Then, the inlet 6C and the outlet 06 in the adapter 6
This contributes to improving the quality of the product by equalizing the magnitude of the resistance to the flow of the molten synthetic resin due to differences in length and shape of the branched communication paths 6j between the two.
またクイッククランプ８は、第４図図示のように、２つ
割りにして一方がヒンジ８ａで連結され、一方がボルト
８ｂで締結されているものである。Further, as shown in FIG. 4, the quick clamp 8 is divided into two parts, one of which is connected with a hinge 8a, and the other is fastened with a bolt 8b.
クイッククランプ８はこの他、公知の他の構成によるも
のであってもよい。In addition to this, the quick clamp 8 may have other known configurations.
前記実施例では、ダイ１の複数の樹脂入口端部２を分離
して２個所に集中して、各個所に７ダプター６を設けた
が、複数の樹脂入口端部２を１個所に集中したり、３個
所以上に分離するようにしてもよい。また、１個所のア
ダプター６に対して前記実施例では２個の押出機３？：
接続したが、これをそれ以上の個数を接続するようにし
てもよい。In the embodiment described above, the plurality of resin inlet ends 2 of the die 1 are separated and concentrated at two locations, and seven adapters 6 are provided at each location. Alternatively, it may be separated into three or more locations. Also, in the above embodiment, two extruders 3 are used for one adapter 6? :
However, a larger number may be connected.
（発明の効果）
この発明は、前記のとおり、共押出成形用のダイの複数
の各樹脂入口端部と、押出機の各樹脂出口端部との間の
接続部において、各樹脂入口端部を１ないし数個所にま
とめ、これらまとめられた各樹脂入口端部とそれに対応
する各押出機の樹脂出口端部との間に、アダプターを介
設したものであるから、押出機とダイ間の連結作業が簡
単となる。これによって、ダイのつまりゃ、材料の変更
等のため、−但装置全体の作動を停止し、掃除したあと
組み替えるとき、分離、組付は作業が簡単となる。(Effects of the Invention) As described above, the present invention provides a method for connecting each resin inlet end to a plurality of resin inlet ends of a die for coextrusion and each resin outlet end of an extruder. are grouped into one or several places, and an adapter is interposed between the inlet end of each grouped resin and the corresponding resin outlet end of each extruder. Connection work becomes easier. This makes it easier to separate and reassemble the device in case of die clogging, material change, etc. However, when the entire device is shut down, cleaned, and then reassembled.
また、材料変更などで組み替えるときに、新しく組み付
ける方のダイを予熱しておいて、組みなお丁ときに、す
ぐ作業にかからせることもできる。Also, when reassembling due to material changes, etc., the die to be newly assembled can be preheated and the die can be put to work immediately when reassembling.
図面はいずれもこの発明の一実施例を示し、第１図は全
体平面図、第２図は要部の縦断平面図、第３図は第２図
の■−■断面図、第４図は第２図のＩＶ−ＩＹ断面図で
ある。
１・・・ダイ、２・・・樹脂入口端部、３・・・押出機
、４・・・樹脂出口端部、５・・・接続部、６・・・ア
ダプター、６ａ・・・人口端、６ｂ・・・出口端、６Ｃ
・・・流入口、６ｄ・・・流出口。
特許出願人 株式会社プラスチック工学研究所第３図
７つ
第４図The drawings all show an embodiment of the present invention; Fig. 1 is an overall plan view, Fig. 2 is a longitudinal sectional plan view of the main part, Fig. 3 is a sectional view taken along the line ■-■ of Fig. 2, and Fig. 4 is a cross-sectional view taken along FIG. 3 is a sectional view taken along the line IV-IY in FIG. 2; DESCRIPTION OF SYMBOLS 1...Die, 2...Resin inlet end, 3...Extruder, 4...Resin outlet end, 5...Connection part, 6...Adapter, 6a...Placement end , 6b...exit end, 6C
...Inflow port, 6d...Outflow port. Patent applicant: Plastic Engineering Research Institute Co., Ltd. Figure 3 7 Figure 4
Claims (2)
部に対応して、複数個の押出機の各樹脂出口端部が接続
されている、共押出成形装置の接続部の構造において、
前記ダイの各樹脂入口端部は、１ないし数個所にまとめ
て並列して開口され、前記接続部にはアダプターが介設
されており、このアダプターには、入口端と出口端とが
形成され、この入口端には、前記各押出機の樹脂出口端
部に対応した各流入口が形成される一方、前記出口端に
は、これら流入口に連通していると共に、前記ダイの並
列開口した各樹脂入口端部に対応した流出口が形成され
ていることを特徴とする、共押出成形装置の接続部の構
造。(1) In a structure of a connecting part of a coextrusion molding apparatus, in which each resin outlet end of a plurality of extruders is connected in correspondence with a plurality of resin inlet ends of a coextrusion die,
Each resin inlet end of the die is opened in one or several places in parallel, and an adapter is interposed in the connection part, and this adapter has an inlet end and an outlet end formed therein. The inlet end is formed with inlets corresponding to the resin outlet ends of the respective extruders, while the outlet end is connected to these inlets and has parallel openings of the die. A structure of a connecting part of a coextrusion molding apparatus, characterized in that an outlet is formed corresponding to each resin inlet end.
プ手段によって接続されている、特許請求の範囲第１項
記載の、共押出成形装置の接続部の構造。(2) The structure of the connection part of the coextrusion molding apparatus according to claim 1, wherein the adapter and the die are connected by quick clamp means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63110923A JPH01280526A (en) | 1988-05-06 | 1988-05-06 | Structure of connecting part of co-extrusion molding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63110923A JPH01280526A (en) | 1988-05-06 | 1988-05-06 | Structure of connecting part of co-extrusion molding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01280526A true JPH01280526A (en) | 1989-11-10 |
Family
ID=14548049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63110923A Pending JPH01280526A (en) | 1988-05-06 | 1988-05-06 | Structure of connecting part of co-extrusion molding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01280526A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06210699A (en) * | 1993-01-20 | 1994-08-02 | Sumitomo Rubber Ind Ltd | Composite extrusion molding device |
| JP5663686B1 (en) * | 2013-10-21 | 2015-02-04 | キョーセー株式会社 | Extrusion mold connection device |
-
1988
- 1988-05-06 JP JP63110923A patent/JPH01280526A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06210699A (en) * | 1993-01-20 | 1994-08-02 | Sumitomo Rubber Ind Ltd | Composite extrusion molding device |
| JP5663686B1 (en) * | 2013-10-21 | 2015-02-04 | キョーセー株式会社 | Extrusion mold connection device |
| JP2015110328A (en) * | 2013-10-21 | 2015-06-18 | キョーセー株式会社 | Extrusion molding apparatus |
| JP2015110316A (en) * | 2013-10-21 | 2015-06-18 | キョーセー株式会社 | Connection device of extrusion molding die |
| JP2017128129A (en) * | 2013-10-21 | 2017-07-27 | キョーセー株式会社 | Die for extrusion molding |
| JP2018111320A (en) * | 2013-10-21 | 2018-07-19 | キョーセー株式会社 | Die for extrusion molding |
| JP2020001395A (en) * | 2013-10-21 | 2020-01-09 | キョーセー株式会社 | Extrusion molding die |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4911628A (en) | Triwall siding apparatus | |
| US3924990A (en) | Coextrusion apparatus | |
| CN100540267C (en) | Be used for method and apparatus at the layered composite oriented layer | |
| KR101824294B1 (en) | Concentric co-extrusion die and a method of extruding a multilayer thermoplastic film | |
| JP2634440B2 (en) | Method and apparatus for feeding a plurality of molten resins to a T-die | |
| CA2219197A1 (en) | Injection molding apparatus having melt transfer and dividing bushing | |
| JPS6238132B2 (en) | ||
| US20060210663A1 (en) | Modules for co-extrusion dies | |
| JPH01280526A (en) | Structure of connecting part of co-extrusion molding device | |
| CA2219054A1 (en) | Injection molding apparatus having melt dividing bushings | |
| EP0589567B1 (en) | Feed block for coextrusion apparatus | |
| JPH06122142A (en) | Co-extrusion flat die | |
| JP2001269979A (en) | Layer order selection unit | |
| US20020086071A1 (en) | Extrusion head for extruding a tube-shaped strand from at least one thermoplastic melt for producing blown films | |
| JPS62264925A (en) | Composite adapter for extrusion molding | |
| JPH0655402B2 (en) | Coextrusion equipment | |
| US5971736A (en) | Device for joining at least two material flows in a laminar coextrusion machine | |
| JPH0673899B2 (en) | Composite adapter for extrusion | |
| KR100280017B1 (en) | Coextrusion Film Manufacturing Equipment | |
| JPH066324B2 (en) | Multi-layer extrusion machine | |
| JPS61241122A (en) | Composite adapter for extrusion molding | |
| JPH06344414A (en) | Co-extrusion multi-layer molding method | |
| JP3675592B2 (en) | Coextrusion equipment | |
| JPH0649319B2 (en) | Composite adapter for extrusion | |
| CA2422988A1 (en) | Four-level spruebar-less melt distribution system |