JPH10235711A - Multilayer resin extruding machine - Google Patents
Multilayer resin extruding machineInfo
- Publication number
- JPH10235711A JPH10235711A JP9059778A JP5977897A JPH10235711A JP H10235711 A JPH10235711 A JP H10235711A JP 9059778 A JP9059778 A JP 9059778A JP 5977897 A JP5977897 A JP 5977897A JP H10235711 A JPH10235711 A JP H10235711A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- head member
- mandrel
- multilayer
- head
- 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
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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
- B29C48/336—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die
- B29C48/3366—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die using a die with concentric parts, e.g. rings, cylinders
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、多層樹脂成形体の
成形に用いる多層樹脂押出し装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multilayer resin extruder used for forming a multilayer resin molded product.
【０００２】[0002]
【従来の技術】従来、多層樹脂成形体の成形に用いる多
層樹脂押出し装置としては、特公昭４６−５０７４号公
報に記載されているものなどが知られている。この多層
樹脂押出し装置は、複数のデッキを積み重ねることによ
り、樹脂の主進路中に複数の樹脂の吐出孔を形成して、
主進路中から多層樹脂を押し出すように構成されてい
る。2. Description of the Related Art Hitherto, as a multilayer resin extrusion apparatus used for molding a multilayer resin molded article, there is known an apparatus described in Japanese Patent Publication No. 46-5074. This multilayer resin extrusion device forms a plurality of resin discharge holes in the main course of the resin by stacking a plurality of decks,
The multilayer resin is extruded from the main course.
【０００３】[0003]
【発明が解決しようとする課題】上記特公昭４６−５０
７４号公報に記載されている多層樹脂押出し装置にあっ
ては、樹脂の主進路中に多層構造とする樹脂をそれぞれ
の吐出孔から流入させるものであるから、各層の樹脂は
主進路中において均等な肉厚として押し出すことが困難
である。そして、その結果として、各層の肉厚が不均等
な多層構造となって、多層樹脂成形体の強度が低下した
り、あるいは酸素等のバリア性が部分的に低下したり損
なわれるなどの問題が生じる。SUMMARY OF THE INVENTION The above Japanese Patent Publication No. 46-50 / 1976
In the multilayer resin extruder described in Japanese Patent Publication No. 74, since the resin having a multilayer structure flows into the main path of the resin from each discharge hole, the resin of each layer is evenly distributed in the main path. It is difficult to extrude as a thick wall. And, as a result, a multilayer structure in which the thickness of each layer is unequal, and the strength of the multilayer resin molded article is reduced, or the barrier properties such as oxygen are partially reduced or impaired. Occurs.
【０００４】また、従来、複数のヘッド部材を組み合わ
せて構成する多層樹脂押出し装置は、各ヘッド部材を樹
脂の押出し方向に重ね合わせてボルトにより固定するも
のであったり、あるいは、樹脂の押出し方向に垂直な筒
状をなす重合部を互いに嵌合して複数のヘッド部材を組
み合わせたうえボルトで固定するものであるから、その
組立分解が容易でないだけでなく、各樹脂流路の間隔を
均等に保持する位置決めも難しいのが実情である。[0004] Conventionally, a multilayer resin extruding apparatus constituted by combining a plurality of head members is one in which each head member is overlapped in the resin extrusion direction and fixed with bolts, or in the resin extrusion direction. Since the vertical cylindrical overlapping parts are fitted together and a plurality of head members are combined and fixed with bolts, not only is it not easy to assemble and disassemble, but also make the intervals between the resin flow paths even. The fact is that the positioning to hold is also difficult.
【０００５】そこで、本発明の目的は、マンドレルに所
要数のヘッドを順次重合させるだけで、多層樹脂の各層
ごとにその肉厚を均等にする位置決めが的確にでき、し
かも、組立分解も容易な多層樹脂押出し装置を提供する
ことにある。[0005] Therefore, an object of the present invention is to simply position the required number of heads on the mandrel in sequence, to accurately determine the thickness of each layer of the multilayer resin so as to make the thickness uniform, and to easily assemble and disassemble. An object of the present invention is to provide a multilayer resin extrusion device.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
の本発明に係る多層樹脂押出し装置は、押出機より加熱
溶融樹脂を多層状に押出す装置であって、多層樹脂の最
内径を規制するマンドレルの外側に重合してマンドレル
との間に最内層樹脂流路を形成する第１のヘッド部材
と、この第１のヘッド部材の外側に順次重合する第２以
下の所要数のヘッド部材を備えてなり、第２以下のヘッ
ド部材は、その内側のヘッド部材との間に順次外層の樹
脂流路を形成するとともにマンドレルとの間に順次合流
樹脂路を形成する組み合わせ部材であり、マンドレルに
対する第１のヘッド部材および互いに隣接するヘッド部
材は樹脂の押出方向に傾斜面をなす重合部で重合する構
成としたことを特徴とするものである。According to the present invention, there is provided a multi-layer resin extruder for extruding a heated molten resin in a multi-layer form from an extruder, which regulates the innermost diameter of the multi-layer resin. A first head member that forms an innermost resin flow path between the mandrel and the outside of the mandrel, and a second or less required number of head members that sequentially polymerize outside the first head member. The second or lower head member is a combination member that sequentially forms an outer layer resin flow path with the inner head member and sequentially forms a merging resin path with the mandrel. The first head member and the head member adjacent to each other are configured to be polymerized by a polymerization portion having an inclined surface in a resin extrusion direction.
【０００７】本発明においては、マンドレル、各ヘッド
部材に、各樹脂流路に樹脂絞り部を形成することが好適
である。In the present invention, it is preferable that a resin throttle portion is formed in each resin flow path in each of the mandrel and each head member.
【０００８】また、本発明においては、各ヘッド部材は
同形状かつ同構成であって、それを順次組み合わせるこ
とにより各樹脂流路とマンドレルとの間に順次合流樹脂
路を形成する形状をなしていることが好適である。Further, in the present invention, each head member has the same shape and the same configuration, and is formed by sequentially combining them to form a confluent resin path between each resin flow path and the mandrel. Is preferred.
【０００９】[0009]
【発明の実施の形態】図面は、本発明に係る装置の一実
施の形態を示している。図１は多層樹脂押出し装置の断
面図、図２は図１のＡ−Ａ断面図である、BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the device according to the invention. FIG. 1 is a cross-sectional view of a multilayer resin extrusion device, and FIG.
【００１０】図示の多層樹脂押出し装置１は、内層、中
間層および外層の３層構造の多層環状樹脂を押出すもの
である。２は内層の内径を規制するマンドレルであり、
このマンドレル２の外周は、上端部３、下方に向けて截
頭逆円錐状をなす重合部４、重合部４から下方に垂直状
に延びる円柱部５からなっている。６は第１のヘッド部
材、７は第２のヘッド部材、８は第３のヘッド部材であ
り、第１のヘッド部材６と第２のヘッド部材７は同形状
かつ同構成のものである。The illustrated multilayer resin extruder 1 extrudes a multilayer annular resin having a three-layer structure of an inner layer, an intermediate layer and an outer layer. 2 is a mandrel that regulates the inner diameter of the inner layer,
The outer periphery of the mandrel 2 is composed of an upper end portion 3, an overlap portion 4 having a truncated inverted conical shape downward, and a cylindrical portion 5 extending vertically downward from the overlap portion 4. Reference numeral 6 denotes a first head member, 7 denotes a second head member, 8 denotes a third head member, and the first head member 6 and the second head member 7 have the same shape and the same configuration.
【００１１】第１のヘッド部材６は、その内面がマンド
レル２の重合部４に重合するように截頭逆円錐状で樹脂
の押出し方向に傾斜面をなす重合部９となっており、そ
の上部は外方に張り出す上端部１０をなし、かつ重合部
９から下方に延びる部分はマンドレル２との間に内層樹
脂流路１１を形成する流路形成部１２をなしている。The first head member 6 has an overlapped portion 9 having a truncated inverted conical shape and an inclined surface in the resin extrusion direction such that the inner surface of the first head member 6 is overlapped with the overlapped portion 4 of the mandrel 2. The upper end portion 10 protrudes outward, and a portion extending downward from the overlapping portion 9 forms a flow path forming portion 12 which forms an inner resin flow path 11 between the upper end portion 10 and the mandrel 2.
【００１２】第１のヘッド部材６はマンドレル２の外側
に重合し、その上端部１０をマンドレル２の上端部３に
ボルト１３によって固定する。マンドレル２の内層樹脂
流路１１に対応する部位には絞り部１４が形成されてお
り、内層樹脂流路１１の上端部は内層樹脂供給路１５に
分岐路１６を介して通じている。The first head member 6 is superposed on the outside of the mandrel 2, and its upper end 10 is fixed to the upper end 3 of the mandrel 2 by bolts 13. A throttle portion 14 is formed at a portion of the mandrel 2 corresponding to the inner resin flow path 11, and an upper end of the inner resin flow path 11 communicates with the inner resin supply path 15 via a branch path 16.
【００１３】第２のヘッド部材７は、前述のとおり第１
のヘッド部材６と同形状かつ同構成であるが、第２のヘ
ッド部材７は、その重合部１７を第１のヘッド部材６の
重合部９の外側に重合し、第２のヘッド部材７の上端部
１８をボルト１９により第１のヘッド部材６の上端部１
０に固定する。このように、第１のヘッド部材６に第２
のヘッド部材７を重合することにより、それらの間に中
間層樹脂流路２０が形成され、かつマンドレル２の円柱
部５との間に内層樹脂と中間層樹脂の合流樹脂路２１が
形成される。第１のヘッド部材６の中間層樹脂流路２０
に対応する部位には絞り部２２が形成されており、中間
層樹脂流路２０の上端部は中間層樹脂供給路２３に分岐
路２４を介して通じている。The second head member 7 is provided with the first head member 7 as described above.
The second head member 7 has the same shape and the same configuration as that of the second head member 6 except that the overlapping portion 17 overlaps the outside of the overlapping portion 9 of the first head member 6. The upper end 18 is fixed to the upper end 1 of the first head member 6 by a bolt 19.
Fix to 0. Thus, the first head member 6 has the second
By polymerizing the head members 7, an intermediate layer resin flow path 20 is formed therebetween, and a combined resin path 21 of the inner layer resin and the intermediate layer resin is formed between the head member 7 and the cylindrical portion 5 of the mandrel 2. . Intermediate layer resin flow path 20 of first head member 6
A throttle portion 22 is formed at a position corresponding to the above.
【００１４】第３のヘッド部材８は、その内面が截頭逆
円錐状で第２のヘッド部材７の重合部１７の外側に重合
する重合部２５をなしており、その上部は外方に張り出
す上端部２６をなし、かつ重合部２５から下方に延びる
部分は第２のヘッド部材７との間に外層樹脂流路２７を
形成する流路形成部２８をなしている。The inner surface of the third head member 8 has a truncated inverted conical shape and forms a superposed portion 25 which is superposed on the outer side of the superposed portion 17 of the second head member 7, and the upper portion thereof is stretched outward. A portion that forms an upper end portion 26 that extends and that extends downward from the overlapping portion 25 forms a channel forming portion 28 that forms an outer layer resin channel 27 between the second head member 7 and the second head member 7.
【００１５】第２のヘッド部材７の外側に第３のヘッド
部材８を重合し、第３のヘッド部材８の上端部２６をボ
ルト２９により第２のヘッド部材７の上端部１８に固定
する。このように、第２のヘッド部材７に第３のヘッド
部材８を重合することにより、それらの間に外層樹脂流
路２７が形成され、かつマンドレル２の円柱部５との間
に、内層樹脂と中間層樹脂の層と外層樹脂の合流樹脂路
３０が形成される。第２のヘッド部材７の外層樹脂流路
２７に対応する部位には絞り部３１が形成されており、
外層樹脂流路２７の上端部は外層樹脂供給路３２に分岐
路３３を介して通じている。The third head member 8 is superimposed on the outside of the second head member 7, and the upper end 26 of the third head member 8 is fixed to the upper end 18 of the second head member 7 with bolts 29. In this way, by superposing the third head member 8 on the second head member 7, the outer resin flow path 27 is formed therebetween, and the inner resin layer 27 is interposed between the second head member 7 and the cylindrical portion 5 of the mandrel 2. Then, a combined resin path 30 of the intermediate resin layer and the outer resin layer is formed. A throttle portion 31 is formed at a portion of the second head member 7 corresponding to the outer resin flow path 27,
The upper end of the outer resin flow path 27 communicates with the outer resin supply path 32 via a branch path 33.
【００１６】マンドレル２の下端には、その軸３４にコ
ア３５が装着され、コア３５の外周にはダイ３６が設け
られており、コア３５とダイ３６との間に多層樹脂押出
し口３７が形成されている。ダイ３６は保持部材３８を
介してボルト３９により第３のヘッド部材８の下端に固
定され、かつセンターボルト４０により多層樹脂押出し
口３７が全周にわたり均等になるように調整できるよう
になっている。４１は多層樹脂押出し装置１の駆動部で
ある。At the lower end of the mandrel 2, a core 35 is mounted on a shaft 34, and a die 36 is provided on the outer periphery of the core 35. A multilayer resin extrusion port 37 is formed between the core 35 and the die 36. Have been. The die 36 is fixed to the lower end of the third head member 8 by a bolt 39 via a holding member 38, and can be adjusted by a center bolt 40 so that the multilayer resin extrusion port 37 becomes uniform over the entire circumference. . Reference numeral 41 denotes a driving unit of the multilayer resin extrusion device 1.
【００１７】図示の実施の形態では、マンドレル２に、
第１のヘッド部材６、第２のヘッド部材７および第３の
ヘッド部材８を順次重合させて構成しているが、その重
合順序は逆であっても、同様に多層樹脂押出し装置１を
構成することができる。In the illustrated embodiment, the mandrel 2
Although the first head member 6, the second head member 7, and the third head member 8 are sequentially superposed, the multi-layer resin extruder 1 is similarly constructed even if the superposition order is reversed. can do.
【００１８】以上のように構成された多層樹脂押出し装
置１において、押出機の溶融樹脂供給部から内層樹脂供
給路１５に供給された内層樹脂は、内層樹脂流路１１を
流下し、また中間層樹脂供給路２３に供給された中間層
樹脂は中間層樹脂流路２０をそれぞれ流下して、内層樹
脂と中間層樹脂の合流樹脂路２１で合流する。内層樹脂
流路１１および中間層樹脂流路２０をそれぞれ流下する
過程で絞り部１４，２２の部位で加圧されて、全周にわ
たって肉厚が均等になるように制御される。このため、
内層樹脂と中間層樹脂は均等な肉厚でかつ整然とした層
状をなして合流樹脂路２１を流下する。In the multilayer resin extruder 1 constructed as described above, the inner layer resin supplied from the molten resin supply section of the extruder to the inner layer resin supply path 15 flows down the inner layer resin flow path 11, The intermediate layer resin supplied to the resin supply path 23 flows down the respective intermediate layer resin flow paths 20 and joins at the junction resin path 21 of the inner layer resin and the intermediate layer resin. In the process of flowing down the inner-layer resin flow path 11 and the intermediate-layer resin flow path 20, respectively, pressure is applied to the portions of the throttle portions 14 and 22 so that the wall thickness is controlled to be uniform over the entire circumference. For this reason,
The inner layer resin and the intermediate layer resin flow down the merged resin path 21 in an even thickness and in an ordered layer.
【００１９】押出機の溶融樹脂供給部から外層樹脂供給
路３２に供給された外層樹脂は、外層樹脂流路２６を流
下し、外層樹脂流路２６を流下する過程で絞り部２９の
部位で加圧されて、全周にわたって肉厚が均等になるよ
うに制御される。そして、外層樹脂は外層樹脂流路２７
から内層樹脂と中間層樹脂の層と外層樹脂の合流樹脂路
３０で内層樹脂と中間層樹脂の層と合流し、内層、中間
層および外層の多層樹脂が多層樹脂押出し口３７から均
等な肉厚でかつ内層、中間層および外層が整然とした層
状をなして押し出される。The outer layer resin supplied from the molten resin supply section of the extruder to the outer layer resin supply path 32 flows down the outer layer resin flow path 26 and is added at the narrowing section 29 in the process of flowing down the outer layer resin flow path 26. It is controlled so that the wall thickness is uniform over the entire circumference. And the outer layer resin is the outer layer resin flow path 27.
From the inner layer resin, the intermediate layer resin, and the outer layer resin through the junction resin path 30 to join the inner layer resin and the intermediate layer resin layer. And the inner layer, the intermediate layer and the outer layer are extruded in orderly layers.
【００２０】図示の実施の形態のように、本発明によれ
ば、マンドレルに所要数のヘッド部材を順次重合するこ
とにより構成されるので、ヘッド部材を増減するだけで
所要層数の多層樹脂押出し装置を構成することができ
る。したがって、本発明に係る多層樹脂押出し装置は汎
用性に優れたものである。As in the illustrated embodiment, according to the present invention, since a required number of head members are sequentially superimposed on a mandrel, the required number of layers can be extruded by simply increasing or decreasing the number of head members. The device can be configured. Therefore, the multilayer resin extrusion device according to the present invention is excellent in versatility.
【００２１】そして、本発明に係る多層樹脂押出し装置
は、マンドレルに対する第１のヘッド部材および互いに
隣接するヘッド部材は樹脂の押出方向に傾斜面をなす重
合部で重合する構成であるから、マンドレルを中心とし
て順次所要数のヘッド部材を樹脂の押出し方向の傾斜面
に沿って組み合わせるだけで、各ヘッド部材の位置決め
が的確にできる。また、マンドレルに対する第１のヘッ
ド部材および互いに隣接するヘッド部材は、組立て過程
では互いに緩嵌合状態を呈し、組立て最終段階でのみ締
定状態となるので、組立てが容易であり、分解過程では
直ぐに緩嵌合状態となるので、分解も容易である。The multilayer resin extrusion apparatus according to the present invention has a configuration in which the first head member with respect to the mandrel and the head members adjacent to each other are polymerized by a polymerization section that forms an inclined surface in the resin extrusion direction. The positioning of each head member can be accurately performed only by combining a required number of head members sequentially as a center along the inclined surface in the resin extrusion direction. In addition, the first head member and the head member adjacent to each other with respect to the mandrel exhibit a loosely fitted state with each other in the assembling process, and are in a tightened state only at the final stage of assembling. Since it is in a loosely fitted state, disassembly is also easy.
【００２２】[0022]
【発明の効果】本発明によれば、マンドレルに所要数の
ヘッド部材を順次重合させるだけで、多層樹脂の各層ご
とにその肉厚を均等にする位置決めが的確にでき、しか
も、組立分解も容易な多層樹脂押出し装置を得ることが
できる。According to the present invention, by simply superimposing a required number of head members on the mandrel in sequence, it is possible to accurately determine the thickness of each layer of the multilayer resin so as to make the thickness uniform, and to assemble and disassemble easily. A multi-layer resin extrusion device can be obtained.
【００２３】また、本発明において、マンドレル、各ヘ
ッド部材に、各樹脂流路に樹脂絞り部を形成することに
より、各樹脂層流路を流下する樹脂層をその全体にわた
って均等な肉厚に制御することができ、いっそう肉厚が
常に均等な多層樹脂を押出すことができる。In the present invention, the resin layer flowing down each resin layer flow path is controlled to have a uniform thickness throughout the resin layer by forming a resin throttle portion in each resin flow path in the mandrel and each head member. It is possible to extrude a multilayer resin having a uniform thickness.
【００２４】また、本発明においては、各ヘッド部材は
同形状かつ同構成であって、それを順次組み合わせるこ
とにより各樹脂流路とマンドレルとの間に順次合流樹脂
路を形成する形状をなしている構成とすることにより、
ヘッド部材を増減するだけで所要層数の多層樹脂押出し
装置を容易に構成することができる。Further, in the present invention, each head member has the same shape and the same configuration, and is formed by sequentially combining them to form a confluent resin path between each resin flow path and the mandrel. By having a configuration that
By simply increasing or decreasing the number of head members, a multilayer resin extruder having a required number of layers can be easily configured.
【図１】本発明の一実施の形態に係る多層樹脂押出し装
置の断面図である。FIG. 1 is a cross-sectional view of a multilayer resin extrusion device according to an embodiment of the present invention.
【図２】図１のＡ−Ａ断面図である。FIG. 2 is a sectional view taken along line AA of FIG.
１ 多層樹脂押出し装置 ２ マンドレル ３ 上端部 ４ 重合部 ５ 円柱部 ６ 第１のヘッド部材 ７ 第２のヘッド部材 ８ 第３のヘッド部材 ９ 重合部 １０ 上端部 １１ 内層樹脂流路 １２ 流路形成部 １３ ボルト １４ 絞り部 １５ 内層樹脂供給路 １６ 分岐路 １７ 重合部 １８ 上端部 １９ ボルト ２０ 中間層樹脂流路 ２１ 合流樹脂路 ２２ 絞り部 ２３ 中間層樹脂供給路 ２４ 分岐路 ２５ 重合部 ２６ 上端部 ２７ 外層樹脂流路 ２８ 流路形成部 ２９ ボルト ３０ 合流樹脂路 ３１ 絞り部 ３２ 外層樹脂供給路 ３３ 分岐路 ３４ 軸 ３５ コア ３６ ダイ ３７ 多層樹脂押出し口 ３８ 保持部材 ３９ ボルト ４０ センターボルト ４１ 駆動部 DESCRIPTION OF SYMBOLS 1 Multilayer resin extrusion apparatus 2 Mandrel 3 Upper end part 4 Superposition part 5 Column part 6 First head member 7 Second head member 8 Third head member 9 Superposition part 10 Upper end part 11 Inner layer resin flow path 12 Flow path forming part DESCRIPTION OF SYMBOLS 13 Bolt 14 Throttle section 15 Inner layer resin supply path 16 Branch path 17 Overlap section 18 Upper end section 19 Bolt 20 Intermediate layer resin flow path 21 Merging resin path 22 Restrictor section 23 Intermediate layer resin supply path 24 Branch path 25 Overlap section 26 Upper end section 27 Outer layer resin flow path 28 Flow path forming section 29 Bolt 30 Merging resin path 31 Throttle section 32 Outer layer resin supply path 33 Branch path 34 Shaft 35 Core 36 Die 37 Multilayer resin extrusion port 38 Holding member 39 Bolt 40 Center bolt 41 Drive section
Claims (3)
す装置であって、多層樹脂の最内径を規制するマンドレ
ルの外側に重合してマンドレルとの間に最内層樹脂流路
を形成する第１のヘッド部材と、この第１のヘッド部材
の外側に順次重合する第２以下の所要数のヘッド部材を
備えてなり、第２以下のヘッド部材は、その内側のヘッ
ド部材との間に順次外層の樹脂流路を形成するとともに
マンドレルとの間に順次合流樹脂路を形成する組み合わ
せ部材であり、マンドレルに対する第１のヘッド部材お
よび互いに隣接するヘッド部材は樹脂の押出方向に傾斜
面をなす重合部で重合する構成としたことを特徴とする
多層樹脂押出し装置。1. An apparatus for extruding a heat-melted resin in a multilayer form from an extruder, wherein the apparatus is polymerized on the outside of a mandrel for regulating the innermost diameter of the multilayer resin to form an innermost resin flow path between the mandrel and the mandrel. A first head member, and a second or less required number of head members sequentially superimposed on the outside of the first head member, and the second or less head member is disposed between the first and second head members. A combination member that sequentially forms a resin flow path of an outer layer and sequentially forms a joining resin path with a mandrel. A multilayer resin extruder, wherein the polymerization is performed in a polymerization section.
路に樹脂絞り部を形成したことを特徴とする請求項１記
載の多層樹脂押出し装置。2. The multilayer resin extruder according to claim 1, wherein a resin throttle portion is formed in each of the resin flow paths in each of the mandrel and each of the head members.
て、それを順次組み合わせることにより各樹脂流路とマ
ンドレルとの間に順次合流樹脂路を形成する形状をなし
ていることを特徴とする請求項１または２記載の多層樹
脂押出し装置。3. Each head member has the same shape and the same configuration, and is formed by sequentially combining them to form a confluent resin path between each resin flow path and the mandrel. The multilayer resin extrusion device according to claim 1 or 2, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9059778A JPH10235711A (en) | 1997-02-27 | 1997-02-27 | Multilayer resin extruding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9059778A JPH10235711A (en) | 1997-02-27 | 1997-02-27 | Multilayer resin extruding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10235711A true JPH10235711A (en) | 1998-09-08 |
Family
ID=13123101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9059778A Pending JPH10235711A (en) | 1997-02-27 | 1997-02-27 | Multilayer resin extruding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10235711A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112549526A (en) * | 2019-09-10 | 2021-03-26 | 北京大学 | Printing head with multilayer core-shell structure and method for printing micro device by adopting printing head |
| KR20210087119A (en) * | 2019-12-03 | 2021-07-12 | 김기영 | Extrusion mold |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6128512U (en) * | 1984-07-25 | 1986-02-20 | 株式会社プラコー | Inflation film molding die |
| JPH05237910A (en) * | 1991-11-14 | 1993-09-17 | Crompton & Knowles Corp | Spiral fed multilayer tubular die |
| JPH05509048A (en) * | 1991-11-27 | 1993-12-16 | ゼネラル・エレクトリック・カンパニイ | Modular tubular extrusion head |
-
1997
- 1997-02-27 JP JP9059778A patent/JPH10235711A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6128512U (en) * | 1984-07-25 | 1986-02-20 | 株式会社プラコー | Inflation film molding die |
| JPH05237910A (en) * | 1991-11-14 | 1993-09-17 | Crompton & Knowles Corp | Spiral fed multilayer tubular die |
| JPH05509048A (en) * | 1991-11-27 | 1993-12-16 | ゼネラル・エレクトリック・カンパニイ | Modular tubular extrusion head |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112549526A (en) * | 2019-09-10 | 2021-03-26 | 北京大学 | Printing head with multilayer core-shell structure and method for printing micro device by adopting printing head |
| KR20210087119A (en) * | 2019-12-03 | 2021-07-12 | 김기영 | Extrusion mold |
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