JPH03197117A - Extrusion molding device for medical container and manufacture of medical container - Google Patents
Extrusion molding device for medical container and manufacture of medical containerInfo
- Publication number
- JPH03197117A JPH03197117A JP1339779A JP33977989A JPH03197117A JP H03197117 A JPH03197117 A JP H03197117A JP 1339779 A JP1339779 A JP 1339779A JP 33977989 A JP33977989 A JP 33977989A JP H03197117 A JPH03197117 A JP H03197117A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molded product
- tube
- welded
- extrusion 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
- 238000001125 extrusion Methods 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 6
- 229920005989 resin Polymers 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000003825 pressing Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002616 plasmapheresis Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000004381 surface treatment Methods 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/28—Blow-moulding apparatus
- B29C49/30—Blow-moulding apparatus having movable moulds or mould parts
- B29C49/38—Blow-moulding apparatus having movable moulds or mould parts mounted on movable endless supports
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7148—Blood bags, medical bags
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Extrusion 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Ｊ
本考案は、血液バッグ、プラズマフェレーシス用バッグ
、高カロリー輸液バッグ、輸液バッグ、生食バッグ等の
医療用容器の押出成形装置（以下押出成形装置）及び医
療用容器の製造方法を提供するものである。
［従来の技術及び発明が解決しようとする課題】
現在使用されている押出成形装置の押出金型の金型リッ
プ口は、円筒状に形成されているので、金型リップ口か
ら押出されるチューブは、円形または円形の相似形が医
療用容器の本体を構成する成形品の連続的な断面となっ
ていた（成形品の任意のどの箇所を切断しても、同形で
あった）、このため医療容器の口部の装着部等の異径状
を連続的に成形することができず、成形品の開口した端
部に口部を装着して成形するときは口部等の固定治具等
が必要となり、口部の固定位置も一定の位置に定めにく
いので大量生産に適さなかった。
そこで１本発明者は以上の課題を解決するために鋭意検
討を重ねた結果法の発明に到達した。
［課題を解決するための手段］
第１の発明として、押出成形機１１と金型２とチューブ
押え具５と切断機６から構成され、前記金型２は内部に
芯金３及びエアーノズル４が装着され、前記芯金３は冷
却管１３と該冷却管１３の中央部を貫通して装着される
エアーノズル１５とから構成され、前記チューブ押え具
５は押え部材１８を所定の間隔をおいて複数装着したキ
ャタピラ１７と該キャタピラ１７を回転駆動するローラ
ー１６とから構成されて、なる医療用容器の押出成形装
置を提供するものである。
第２の発明として、次の各工程よりなる医療用容器の製
造方法を提供するものである。
■押出成形機１１及び金型２内で溶融した樹脂を金型リ
ップ口９から金型２の外にチューブ８として押出す工程
。
■鶴記チューブ８を芯金３と押え部材１８．１８の３点
間に挟んで、芯金３の表面上を滑りながら冷却し、細径
部１９を有する所定の成形品７として成形する工程。
■前記成形品７の細径部１９を、切断機６で切断し、開
口部２０．２０を形成して成形品７ａとする工程。
■前記の成形品７ａの開口部２０の一方に、口部部品２
１を挿入し溶着して溶着部２２を形成し、もう一方の開
口部２０を有する端部を溶着して溶着部２３を形成する
工程。
Ｅ作用］
押出成形機１１及び金型２内で溶融した樹脂が金型リッ
プ口９から金型２の外にチューブ８として押出され、該
チューブ８は、芯金３と押え部材１８．１８の３点間に
挟まれて、芯金３の表面上を滑りながら冷却されるので
、細径部１９等の異径部を容易に形成することができる
。
［実施例］
第１図は、本発明の押出成形装置１の該略図を示す、押
出成形装置１は、基本的に押出成形機１１、金型２．チ
ューブ押え具５．切断機６とから構成されている。
金型２の内部には、芯金３及びエアーノズル４が装着さ
れている。
芯金３の外表面はチューブ８と接触しチューブ８を冷却
固化させるものであるから、芯金３は、成形時において
外表面が常に冷却されている状態に維持することが重要
である。このため第２図に示すように冷却管１３と該冷
却管１３の中央部を貫通して装着されるエアーノズル１
５とからなる多重管構造となっており、該冷却管１３中
には冷却水１４が充填され、冷却管１３内部は冷却水１
４が循環できる流路が形成されている。また冷却効果を
高めるために前記冷却管１３の外周に断熱材１２が装着
されている。また芯金３の外表面はチューブ８と接触し
た際の「スベリ効果」を向上させるために、テフロンコ
ーティングやブラスト加工等の表面処理を行うことがで
きる。
エアーノズル４は、金型リップ口９から押出されたチュ
ーブ８がつぶれたり変形したりしないようにチューブ８
の形状を保持するために、微量のエアーを注入したり排
出したりするものである。
チューブ押え具５は、チューブ８を挟んで左右対称一対
に配置され、押え部材１８を所定の間隔をおいて複数装
着したキャタピラ１７がローラー１６により回転駆動さ
れることによって、チューブ８の所定の箇所を押えて成
形品７として成形するものである。
切断機６は、通常使用されるカッター等が使用される。
次に医療用容器の成形方法について説明する。
押出成形機１１及び金型２内で溶融した樹脂が金型リッ
プ口９から金型２の外にチューブ８として押出される。
該チューブ８は、第３図に示すように芯金３と押え部材
１８．１８の３点間に挟まれて、芯金３の表面上を滑り
ながら冷却され、細径部１９を有する所定の成形品７と
して成形される。
該成形品７の細径部１９は、切断機６で切断され、開口
部２０．２０を有する成形品７ａが形成される。
前記成形品７ａの開口部２０の一方に、口部部品２１を
挿入して高周波ウェルダー等で溶着して溶着部２２を形
成し、もう一方の開口部２０を有する端部を高周波ウエ
ルダー等で溶着して溶着部２３を形成し、最後に、該溶
着部２３にハンガー穴２４を形成する。
［発明の効果］
金型２より押出したチューブ８に細径部１９等の異径部
を容易に形成することができ、所望の形状を有する医療
用容器を大量に効率よく生産することができる。Detailed Description of the Invention [Industrial Application Field J] The present invention is an extrusion molding device (hereinafter referred to as extrusion molding) for medical containers such as blood bags, plasmapheresis bags, high-calorie infusion bags, infusion bags, saline bags, etc. The present invention provides a method for manufacturing a medical container (device) and medical container. [Prior Art and Problems to be Solved by the Invention] The mold lip of the extrusion mold of the currently used extrusion molding apparatus is formed in a cylindrical shape, so that the tube extruded from the mold lip is In this case, a circle or a similar circular shape was a continuous cross section of the molded product that constitutes the body of the medical container (the shape remained the same no matter where the molded product was cut). If it is not possible to continuously mold different diameter shapes such as the attachment part of the mouth of a medical container, and when molding the mouth by attaching it to the open end of the molded product, use a fixing jig for the mouth, etc. It was not suitable for mass production because it required a fixed position for the opening and it was difficult to fix it in a fixed position. In order to solve the above-mentioned problems, the inventor of the present invention has conducted extensive studies and as a result has arrived at the invention of a method. [Means for Solving the Problems] As a first invention, the mold 2 is composed of an extrusion molding machine 11, a mold 2, a tube presser 5, and a cutting machine 6, and the mold 2 has a core metal 3 and an air nozzle 4 inside. is installed, the core metal 3 is composed of a cooling pipe 13 and an air nozzle 15 that is installed through the center of the cooling pipe 13, and the tube holding device 5 holds the holding member 18 at a predetermined interval. The present invention provides an extrusion molding device for a medical container, which is composed of a plurality of caterpillars 17 mounted thereon and a roller 16 for rotationally driving the caterpillars 17. As a second invention, a method for manufacturing a medical container is provided which includes the following steps. (2) A step of extruding the resin melted in the extrusion molding machine 11 and the mold 2 from the mold lip 9 to the outside of the mold 2 as a tube 8. ■ A step in which the Tsurugi tube 8 is sandwiched between the core metal 3 and the presser member 18, 18, cooled while sliding on the surface of the core metal 3, and molded into a predetermined molded product 7 having a narrow diameter portion 19. . (2) A process in which the narrow diameter portion 19 of the molded product 7 is cut by the cutter 6 to form openings 20 and 20 to form the molded product 7a. ■A mouth part 2 is attached to one side of the opening 20 of the molded product 7a.
1 is inserted and welded to form a welded part 22, and the other end having the opening 20 is welded to form a welded part 23. E action] The resin melted in the extrusion molding machine 11 and the mold 2 is extruded from the mold lip 9 to the outside of the mold 2 as a tube 8, and the tube 8 is formed between the core bar 3 and the presser member 18. Since it is cooled while being sandwiched between three points and sliding on the surface of the core metal 3, different diameter parts such as the narrow diameter part 19 can be easily formed. [Example] FIG. 1 shows a schematic diagram of an extrusion molding apparatus 1 of the present invention. The extrusion molding apparatus 1 basically includes an extrusion molding machine 11, a mold 2. Tube holder 5. It is composed of a cutting machine 6. Inside the mold 2, a core metal 3 and an air nozzle 4 are installed. Since the outer surface of the core metal 3 contacts the tube 8 and cools and solidifies the tube 8, it is important to keep the outer surface of the core metal 3 constantly cooled during molding. For this purpose, as shown in FIG.
The cooling pipe 13 is filled with cooling water 14, and the inside of the cooling pipe 13 is filled with cooling water 1.
A flow path is formed through which 4 can circulate. Further, a heat insulating material 12 is attached to the outer periphery of the cooling pipe 13 in order to enhance the cooling effect. Further, the outer surface of the core metal 3 can be subjected to surface treatment such as Teflon coating or blasting in order to improve the "sliding effect" when it comes into contact with the tube 8. The air nozzle 4 is designed to prevent the tube 8 extruded from the mold lip opening 9 from being crushed or deformed.
In order to maintain its shape, a small amount of air is injected and expelled. The tube pressers 5 are arranged in a pair of left-right symmetrical pairs with the tube 8 in between, and are held at predetermined positions on the tube 8 by rotationally driving the caterpillars 17 mounted with a plurality of presser members 18 at predetermined intervals by rollers 16. The molded product 7 is formed by pressing the molded product 7. As the cutting machine 6, a commonly used cutter or the like is used. Next, a method for forming a medical container will be explained. The resin melted in the extrusion molding machine 11 and the mold 2 is extruded from the mold lip 9 to the outside of the mold 2 as a tube 8. As shown in FIG. 3, the tube 8 is sandwiched between three points, the core metal 3 and the holding member 18, 18, and is cooled while sliding on the surface of the core metal 3. It is molded as a molded product 7. The narrow diameter portion 19 of the molded product 7 is cut by the cutting machine 6 to form a molded product 7a having an opening 20.20. The mouth part 21 is inserted into one of the openings 20 of the molded product 7a and welded with a high-frequency welder or the like to form a welded part 22, and the end having the other opening 20 is welded with a high-frequency welder or the like. Then, a welded portion 23 is formed, and finally, a hanger hole 24 is formed in the welded portion 23. [Effects of the Invention] Different diameter portions such as the narrow diameter portion 19 can be easily formed in the tube 8 extruded from the mold 2, and medical containers having a desired shape can be efficiently produced in large quantities. .
第１図は本発明の医療用容器の押出成形装置の該略図、
第２図は第１図の芯金の拡大図、第３図は金型リップ口
より押出されたチューブの成形状況を示す断面図、第４
図及び第５図は本発明により得られた医療用容器の平面
面及び側面図、第６図は従来の医療用容器の製造方法を
示す該略図である。
図中、ｌは押出成形装置、２は金型、３は芯金、４と１
５はエアーノズル、５はチューブ押え具、６は切断機、
７．７ａは成形物、８はチューブ、９は金型リップ口、
１１は押出成形機、１３は冷却管、１６はローラー、１
７はキャタピラ、１８は押え部を示す。FIG. 1 is a schematic diagram of the extrusion molding apparatus for medical containers of the present invention;
Figure 2 is an enlarged view of the core metal shown in Figure 1, Figure 3 is a sectional view showing the molding situation of the tube extruded from the mold lip, and Figure 4 is an enlarged view of the core bar in Figure 1.
5 and 5 are plan and side views of a medical container obtained according to the present invention, and FIG. 6 is a schematic diagram showing a conventional method for manufacturing a medical container. In the figure, l is an extrusion molding device, 2 is a mold, 3 is a core metal, 4 and 1
5 is an air nozzle, 5 is a tube holder, 6 is a cutting machine,
7.7a is the molded product, 8 is the tube, 9 is the mold lip opening,
11 is an extrusion molding machine, 13 is a cooling pipe, 16 is a roller, 1
7 indicates a caterpillar, and 18 indicates a presser portion.
Claims (2)
断機６から構成され、 前記金型２は内部に芯金３及びエアーノズル４が装着さ
れ、 前記芯金３は冷却管１３と該冷却管１３の中央部を貫通
して装着されるエアーノズル１５とから構成され、 前記チューブ押え具５は押え部材１８を所定の間隔をお
いて複数装着したキャタピラ１７と該キャタピラ１７を
回転駆動するローラー１６とから構成される、ことを特
徴とする医療用容器の押出成形装置。(1) Consisting of an extrusion molding machine 11, a mold 2, a tube presser 5, and a cutting machine 6, the mold 2 is equipped with a core metal 3 and an air nozzle 4 inside, and the core metal 3 is equipped with a cooling pipe 13. and an air nozzle 15 installed through the center of the cooling pipe 13, and the tube presser 5 includes a caterpillar 17 to which a plurality of presser members 18 are attached at predetermined intervals, and a caterpillar 17 that rotates the caterpillar 17. 1. An extrusion molding device for medical containers, characterized in that it is comprised of a driven roller 16.
型リップ口９から金型２の外にチューブ８として押出す
工程。 ［２］前記チューブ８を芯金３と押え部材１８、１８の
３点間に挟んで、芯金３の表面上を滑りながら冷却し、
細径部１９を有する所定の成形品７として成形する工程
。 ［３］前記成形品７の細径部１９を、切断機６で切断し
、開口部２０、２０を形成して成形品７ａとする工程。 ［４］前記成形品７ａの開口部２０の一方に、口部部品
２１を挿入し溶着して溶着部２２を形成し、もう一方の
開口部２０を有する端部を溶着して溶着部２３を形成す
る工程。(2) A method for manufacturing a medical container comprising the following steps: [1] Extruding the melted resin in the extruder 11 and the mold 2 from the mold lip 9 to the outside of the mold 2 as a tube 8 Process. [2] The tube 8 is sandwiched between the core metal 3 and the holding members 18, 18, and is cooled while sliding on the surface of the core metal 3.
A step of forming a predetermined molded product 7 having a narrow diameter portion 19. [3] A step of cutting the narrow diameter portion 19 of the molded product 7 with the cutter 6 to form openings 20, 20 to obtain the molded product 7a. [4] Insert and weld the mouth part 21 into one of the openings 20 of the molded product 7a to form a welded part 22, and weld the other end having the opening 20 to form a welded part 23. The process of forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1339779A JP2583136B2 (en) | 1989-12-27 | 1989-12-27 | Extruder for medical container and method for manufacturing medical container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1339779A JP2583136B2 (en) | 1989-12-27 | 1989-12-27 | Extruder for medical container and method for manufacturing medical container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03197117A true JPH03197117A (en) | 1991-08-28 |
| JP2583136B2 JP2583136B2 (en) | 1997-02-19 |
Family
ID=18330730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1339779A Expired - Fee Related JP2583136B2 (en) | 1989-12-27 | 1989-12-27 | Extruder for medical container and method for manufacturing medical container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2583136B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006031165A1 (en) * | 2004-09-16 | 2006-03-23 | Tetra Laval Holdings & Finance S.A. | A method and an apparatus in the separation of plastic bodies |
| CN109228067A (en) * | 2018-09-27 | 2019-01-18 | 佛山迪骏自动化科技有限公司 | A kind of device cooling for plastic pipe |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101729190B1 (en) | 2016-02-19 | 2017-04-25 | 신명철 | Manufacturing Devices for Plastic Corner Protectors and the Method of Making the Plastic Corner Protectors Using the Same |
-
1989
- 1989-12-27 JP JP1339779A patent/JP2583136B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006031165A1 (en) * | 2004-09-16 | 2006-03-23 | Tetra Laval Holdings & Finance S.A. | A method and an apparatus in the separation of plastic bodies |
| CN109228067A (en) * | 2018-09-27 | 2019-01-18 | 佛山迪骏自动化科技有限公司 | A kind of device cooling for plastic pipe |
| CN109228067B (en) * | 2018-09-27 | 2020-09-08 | 诸暨市云傲机械配件厂 | Device for cooling plastic pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2583136B2 (en) | 1997-02-19 |
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