JPS5848337B2 - plastic plastic bag - Google Patents
plastic plastic bagInfo
- Publication number
- JPS5848337B2 JPS5848337B2 JP49107100A JP10710074A JPS5848337B2 JP S5848337 B2 JPS5848337 B2 JP S5848337B2 JP 49107100 A JP49107100 A JP 49107100A JP 10710074 A JP10710074 A JP 10710074A JP S5848337 B2 JPS5848337 B2 JP S5848337B2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical body
- cavity
- hollow cylindrical
- extrusion
- circular die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- B29C48/36—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
- B29C48/16—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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
本発明は、各種熱可塑性樹脂を用いてソリッド外皮層と
内部発泡層の複合異型構造体を同時に且つ連続的に製造
する方法及び装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for simultaneously and continuously manufacturing a composite structure having a solid outer skin layer and an inner foam layer using various thermoplastic resins.
本発明は、各種熱可塑性樹脂中空筒状体を押出すと同時
にその軟化状態の筒内に発泡性熱可塑性樹脂を押出し充
填し、その発泡力を利用して両者を密着一体化すること
により各種の複合異型体を一段で製造する方法及び装置
に関するものである。The present invention can be used to extrude various thermoplastic resin hollow cylinders, simultaneously extrude and fill the softened cylinder with foamable thermoplastic resin, and use the foaming power to tightly integrate the two. The present invention relates to a method and apparatus for producing a composite variant body in one step.
従来、この種の製造法としては、熱可塑性樹脂筒状体と
その内部に充填する発泡体とを各々別々に製造し、その
筒状体の中に発泡体を挿入して両者が分離しない様に接
着して製造する方法、又は熱可塑性樹脂を筒状に押出し
ながら、その筒状体内部一粒状の発泡性物質もしくは一
次発泡した物質を粒状のまま充填し、その後その充填さ
れた発泡性粒子を加熱膨脹させる方法（特公昭４３−１
５１４）等があるが、いずれも工程が複雑となり又作業
が断続的な為、非能率的であり、経済的ではない。Conventionally, this type of manufacturing method involves manufacturing a thermoplastic resin cylindrical body and a foam to be filled inside the body separately, and then inserting the foam into the cylindrical body to prevent the two from separating. or by extruding thermoplastic resin into a cylindrical shape, filling the inside of the cylindrical body with a single particle of foamable material or a primary foamed material, and then filling the filled expandable particles. Method of heating and expanding
514), etc., but all of them are inefficient and uneconomical because the process is complicated and the work is intermittent.
本発明は従来の方法の上述の欠点を改良し一段で各種の
複合異型体を製造する方法及び装置を提供するものであ
る。The present invention aims to improve the above-mentioned drawbacks of the conventional methods and provide a method and apparatus for manufacturing various composite profiles in one step.
本発明は、サーキュラーダイを装着した押出機より溶融
熱可塑性樹脂を中空筒状体に押出し、ソノツド外皮層を
形威せしめ、更に該サーキュラーダイ内部に、該中空筒
状体の押出方向に貫通する空洞を設け、該空洞内に、該
空洞の押出し方向先端から若干延長した部分まで挿入装
着した溶融発泡性樹脂押出し用ノズルから、発泡性ガス
が逃出さない程度の表面スキン層が得られる様に、溶融
発泡性樹脂の温度を調節しながら、該溶融発泡性樹脂を
前記中空筒状体内部に押出し充填することによりソリッ
ド層と内部発泡体とを密着一体化せしめることを特徴と
するプラスチック複合体の一段或形方法である。In the present invention, a molten thermoplastic resin is extruded into a hollow cylindrical body using an extruder equipped with a circular die, an outer skin layer is formed, and the resin is further penetrated into the inside of the circular die in the extrusion direction of the hollow cylindrical body. A cavity is provided, and a surface skin layer that prevents foaming gas from escaping is obtained from a melt-foamable resin extrusion nozzle that is inserted into the cavity and extends slightly from the tip of the cavity in the extrusion direction. The plastic composite is characterized in that the solid layer and the internal foam are tightly integrated by extruding and filling the molten foamable resin inside the hollow cylindrical body while adjusting the temperature of the molten foamable resin. This is a way to shape the body.
また、上記の威形方法において使用する装置であって、
中空筒状体の押出成形機のサーキュラーダイ内部に、該
中空節状体の押出方向に貫通ずる空洞を設け、該空洞内
に冷却装置を有する樹脂押出し用ノズルを該空洞の押出
し方向先端から若干延長した部分まで挿入装着して成る
プラスチック複合体の一段成形装置である。Also, a device used in the above-mentioned method,
Inside the circular die of an extrusion molding machine for a hollow cylindrical body, a cavity is provided that passes through the hollow joint in the extrusion direction, and a resin extrusion nozzle having a cooling device is installed in the cavity a little from the tip of the cavity in the extrusion direction. This is a one-stage molding device for plastic composites that is inserted and mounted up to the extended portion.
本発明はこの様に従来の方法とは異なり、一工程で内部
発泡体とソリッド外皮層とを密着一体化することのでき
るプラスチック複合体の成形方法とその装置を完威した
ものである。As described above, the present invention, unlike conventional methods, has perfected a method and apparatus for molding a plastic composite that can tightly integrate an inner foam and a solid outer skin layer in one step.
本発明のプラスチック複合体は完全な一工程の一体化の
製品であるから、すぐれた構造強度を有し、然も工程が
すくないので経済的にすぐれ、一体化工程で且つ連続操
業ができるので均一の製品を短時間に大量生産できる。Since the plastic composite of the present invention is a completely integrated product in one process, it has excellent structural strength, is economical because there are few steps, and is uniform because it is an integrated process and can be operated continuously. products can be mass-produced in a short period of time.
本発明のソリッド外皮用の熱可塑性樹脂としては、ポリ
エチレン，ポリプロピレン，ポリ塩化ビニル，ポリスチ
レン，ポリカーボネート，アクリロニトリル，ポリアミ
ド，アクリルースチレン共重合体，アクリロニトリルー
ブタジエンースチレン共重合体などの樹脂及びこれらの
廃棄樹脂も使用できる。Examples of the thermoplastic resin for the solid outer skin of the present invention include polyethylene, polypropylene, polyvinyl chloride, polystyrene, polycarbonate, acrylonitrile, polyamide, acrylonitrile-styrene copolymer, acrylonitrile-butadiene-styrene copolymer, and resins such as these. Waste resin can also be used.
また、本発明の内部発泡体用の樹脂としてはポリスチレ
ン，ポリプロピレン，ポリ塩化ビニル，アクリロニトリ
ルーブタジエンースチレン共重合体などの樹脂が用いら
れ、これらにガス含浸（炭素数３〜７の脂肪族炭化水素
、例えばプロパン、ブタン，ペンタン，ヘキサンなど）
または熱分解性発泡剤を混合したものが用いられる。Further, as the resin for the internal foam of the present invention, resins such as polystyrene, polypropylene, polyvinyl chloride, acrylonitrile-butadiene-styrene copolymer are used, and these are impregnated with gas (aliphatic carbonization having 3 to 7 carbon atoms). hydrogen (e.g. propane, butane, pentane, hexane, etc.)
Alternatively, a mixture containing a thermally decomposable blowing agent is used.
本発明に使用する熱分解性発泡剤は、アゾジカルボンア
ミド，ジニトロソペンクメチレンテトラミン，パラトル
エンスルフオニルセミカルバジド，Ｐ，Ｐ’−オキシビ
スベンゼンスルフオニルヒドラジド，アゾビスイソブチ
ロニトリルなどの分解型発泡剤が好ましい。The thermally decomposable blowing agents used in the present invention include azodicarbonamide, dinitrosopencumethylenetetramine, paratoluenesulfonyl semicarbazide, P,P'-oxybisbenzenesulfonylhydrazide, azobisisobutyronitrile, etc. Degradable blowing agents are preferred.
次に本発明を図について説明する。The invention will now be explained with reference to the figures.
図は本発明の実施の１態様を示す装置の縦断面図である
。The figure is a longitudinal sectional view of an apparatus showing one embodiment of the present invention.
図に於いて１は中空筒状体成形用押出機、２はサーキュ
ラーダイ、３は内部発泡体成形用押出機、４は溶融発泡
性樹脂押出用ノズル、５はノズルの温度調節用の蛇管、
６は中空筒状体、７は内部発泡体、８は冷却装置（サイ
ジング装置を併設する； 場合もある）、９は引取機を
示す。In the figure, 1 is an extruder for molding a hollow cylindrical body, 2 is a circular die, 3 is an extruder for molding an internal foam, 4 is a nozzle for extruding a molten foamable resin, and 5 is a corrugated pipe for adjusting the temperature of the nozzle.
6 is a hollow cylindrical body, 7 is an internal foam, 8 is a cooling device (with a sizing device; in some cases), and 9 is a take-off machine.
動作について説明すると、押出機１で可塑化された各種
熱可塑性樹脂はサーキュラーダイ２より筒状体に押出さ
れ中空筒状体６を形成する。To explain the operation, various thermoplastic resins plasticized in the extruder 1 are extruded into a cylindrical body through the circular die 2 to form a hollow cylindrical body 6.
同時に該中空筒状体の内部に押出機３及び蛇管５によ９
り温度調節されたノズル４から押出される溶融発泡性
樹脂７を導入する。At the same time, an extruder 3 and a flexible tube 5 are inserted into the hollow cylindrical body.
A molten foamable resin 7 is introduced which is extruded from a nozzle 4 whose temperature is controlled.
発泡性樹脂を押出す場合は、押出される発泡体の表面が
若干のスキン層を有する様に、ノズルの温度を調節する
ことが必要である。When extruding a foamable resin, it is necessary to adjust the temperature of the nozzle so that the surface of the extruded foam has a slight skin layer.
温度調節をすることなしに押出した場合５ は、発泡ガ
スが発泡体表皮を破り外部に逃出し、発泡体とソリッド
外皮層との間にガス溜りを発生し、完全密着による複合
が不可能となる。If extrusion is performed without temperature control5, the foaming gas will break through the foam skin and escape to the outside, creating a gas pocket between the foam and the solid skin layer, making it impossible to achieve complete adhesion. becomes.
又発泡層の均一な発泡が期待できず構造強度が低下する
。Furthermore, uniform foaming of the foam layer cannot be expected, resulting in a decrease in structural strength.
更に、ノズルの温度調節はノズル外部からの熱のノ 伝
幡を遮断し、発泡体の均一な発泡を行うために必要な手
段である。Furthermore, temperature control of the nozzle is a necessary means for blocking the transmission of heat from outside the nozzle and for uniformly foaming the foam.
サーキュラーダイ内部に挿入装着されるノズルは、サー
キュラーダイの押出し方向先端から若干延長した部分ま
で挿入装着することが必要である。The nozzle inserted into the circular die needs to be inserted to a portion slightly extending from the tip of the circular die in the extrusion direction.
ノズルの位置がサーキュラーヌ ダイの押出し面と同一
面上にある場合は、ノズルから押出された発泡体の膨脹
力によって、サーキュラーダイから押出された直後の未
だ軟化状態にある中空筒状体が押し拡げられ偏肉の原因
となり或いは、ソリッド外皮層の破壊を引起す原因とな
冫 る。If the nozzle is located on the same plane as the extrusion surface of the circular die, the expansion force of the foam extruded from the nozzle will push the hollow cylindrical body, which is still in a softened state immediately after being extruded from the circular die. This may cause the material to expand and cause uneven thickness, or may cause destruction of the solid outer skin layer.
更には、押出し直後の発泡体がサーキュラーダイ面に付
着し成形作業が困難となるので、サーキュラーダイ内部
に挿入装着されるノズルの位置はサーキュラーダイの押
出し方向先端から若干延長した部分まで挿入装着するこ
とが必要となる。Furthermore, the foam immediately after extrusion will adhere to the surface of the circular die, making the molding work difficult, so the nozzle inserted into the circular die should be inserted to a point slightly extending from the tip of the circular die in the extrusion direction. This is necessary.
この様にして押出された溶融発泡性樹脂は、未だ軟化状
態にある中空筒状体の内部にて、その発泡力により中空
筒状体を図の如くに膨脹させることにより、発泡体と中
空筒状体は密着一体複合化される。The molten foamable resin extruded in this way is expanded inside the hollow cylindrical body which is still in a softened state, by expanding the hollow cylindrical body as shown in the figure due to its foaming force. The shaped body is integrated into a composite body.
次いで該複合体は冷却装置８（サイジング装置併設の場
合もある）で冷却又はサイジングされ引取り装置９にて
引取られる。Next, the composite is cooled or sized by a cooling device 8 (which may also be equipped with a sizing device), and taken by a taking device 9.
【図面の簡単な説明】
図は本発明の実施の一態様を示す装置の縦断面図である
。BRIEF DESCRIPTION OF THE DRAWINGS The figure is a longitudinal sectional view of an apparatus showing one embodiment of the present invention.
Claims (1)
性樹脂を中空筒状体に押出し、ソリッド外皮層を形成せ
しめ、更に該サーキュラーグイ内部に、該中空筒状体の
押出方向に貫通する空洞を設け、該空洞内に該空洞の押
出し方向先端から若干延長した部分まで挿入装着した溶
融発泡性樹脂押出し用ノズルから、発泡性ガスが逃出さ
ない程度の表面スキン層が得られる様に、溶融発泡性樹
脂の温度を調節しながら、該溶融発泡性樹脂を前記中空
筒状体内部に押出し充填することによりソリッド外皮層
と内部発泡体とを密着一体化せしめることを特徴とする
プラスチック複合体の一段成形方法。 ２ 特許請求の範囲１に於いて、中空筒状体の押出成形
機のサーキュラーダイ内部に該中空筒状体の押出方向に
貫通ずる空洞を設け、該空洞内に冷却装置を有する樹脂
押出し用ノズルを該空洞の押出し方向先端から若干延長
した部分まで挿入装着して成るプラスチック複合体の一
段成形装置。[Claims] 1. Molten thermoplastic resin is extruded into a hollow cylindrical body by an extruder equipped with a circular die to form a solid outer skin layer, and further inside the circular die, in the extrusion direction of the hollow cylindrical body. A penetrating cavity is provided, and a surface skin layer that prevents foaming gas from escaping can be obtained from a melt-foamable resin extrusion nozzle that is inserted into the cavity and extends slightly from the tip of the cavity in the extrusion direction. The solid outer skin layer and the internal foam are closely integrated by extruding and filling the inside of the hollow cylindrical body with the molten foamable resin while adjusting the temperature of the molten foamable resin. One-step molding method for plastic composites. 2. A resin extrusion nozzle according to claim 1, wherein a cavity is provided inside a circular die of an extrusion molding machine for a hollow cylindrical body and extends through the extrusion direction of the hollow cylindrical body, and a cooling device is provided in the cavity. A one-stage molding device for a plastic composite body, which is formed by inserting and mounting a plastic composite material into a part extending slightly from the tip of the cavity in the extrusion direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49107100A JPS5848337B2 (en) | 1974-09-19 | 1974-09-19 | plastic plastic bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49107100A JPS5848337B2 (en) | 1974-09-19 | 1974-09-19 | plastic plastic bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5134267A JPS5134267A (en) | 1976-03-23 |
| JPS5848337B2 true JPS5848337B2 (en) | 1983-10-27 |
Family
ID=14450448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP49107100A Expired JPS5848337B2 (en) | 1974-09-19 | 1974-09-19 | plastic plastic bag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5848337B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5783125A (en) * | 1993-04-05 | 1998-07-21 | Crane Plastics Company Limited Partnership | Reinforced extrusion products and method of making same |
| KR20030083067A (en) * | 2002-04-19 | 2003-10-30 | 이상호 | A making devices of a flexible pipe and the p.v.c. flexible pipe thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS496537A (en) * | 1972-05-08 | 1974-01-21 |
-
1974
- 1974-09-19 JP JP49107100A patent/JPS5848337B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5134267A (en) | 1976-03-23 |
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