JP2821657B2 - Manufacturing method of plastic container - Google Patents
Manufacturing method of plastic containerInfo
- Publication number
- JP2821657B2 JP2821657B2 JP17225393A JP17225393A JP2821657B2 JP 2821657 B2 JP2821657 B2 JP 2821657B2 JP 17225393 A JP17225393 A JP 17225393A JP 17225393 A JP17225393 A JP 17225393A JP 2821657 B2 JP2821657 B2 JP 2821657B2
- Authority
- JP
- Japan
- Prior art keywords
- plug
- container body
- welded
- heat
- welding
- 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 - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
- B29B13/023—Half-products, e.g. films, plates
- B29B13/024—Hollow bodies, e.g. tubes or profiles
- B29B13/025—Tube ends
-
- 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
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
-
- 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
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
- B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
-
- 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
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
- B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces to be joined
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/024—Thermal pre-treatments
- B29C66/0242—Heating, or preheating, e.g. drying
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/03—After-treatments in the joint area
- B29C66/034—Thermal after-treatments
- B29C66/0342—Cooling, e.g. transporting through welding and cooling zone
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
- B29C66/133—Fin-type joints, the parts to be joined being flexible
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
- B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
- B29C66/2422—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical
- B29C66/24221—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical being circular
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
- B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
- B29C66/53261—Enclosing tubular articles between substantially flat elements
- B29C66/53262—Enclosing spouts between the walls of bags, e.g. of medical bags
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
- B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
- B29C66/53261—Enclosing tubular articles between substantially flat elements
- B29C66/53262—Enclosing spouts between the walls of bags, e.g. of medical bags
- B29C66/53263—Enclosing spouts between the walls of bags, e.g. of medical bags said spouts comprising wings, e.g. said spouts being of ship-like or canoe-like form to avoid leaks in the corners
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
- B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
-
- 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
- B29C65/82—Testing the joint
- B29C65/8269—Testing the joint by the use of electric or magnetic means
- B29C65/8276—Testing the joint by the use of electric or magnetic means by the use of electric means
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
-
- 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
Abstract
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は、主として薬液を充填す
る容器の製造方法に関し、とくに、容器本体に口栓を溶
着する方法に関する。口栓は筒状で、中心孔を気密に栓
をしたものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a container mainly filled with a chemical solution, and more particularly to a method of welding a plug to a container body. The spout is cylindrical and has a center hole hermetically plugged.
【０００２】[0002]
【従来の技術】容器本体に口栓を溶着して製造する容器
として、図１に示すものがある。この容器は、口栓１と
容器本体２とを溶融して気密に密着するために、少なく
とも口栓１と容器本体２の接触面とを熱可塑性のプラス
チック製とする。通常は、容器本体２の内面を熱可塑性
のプラスチックシートとし、口栓全体をポリエチレン等
の熱可塑性プラスチックで成形している。2. Description of the Related Art FIG. 1 shows a container manufactured by welding a plug to a container body. In this container, at least the contact surface between the plug 1 and the container body 2 is made of thermoplastic plastic so that the plug 1 and the container body 2 are melted and tightly adhered. Normally, the inner surface of the container body 2 is formed of a thermoplastic plastic sheet, and the entire plug is formed of a thermoplastic plastic such as polyethylene.
【０００３】図１に示す容器は、容器本体２に口栓１を
挿入し、容器本体２と口栓１とを溶着して製造する。口
栓１を挿入する前の容器本体２は、図１において、両側
と下端縁とを溶着している。この容器本体２は、図１に
おいて容器本体２の上端縁は溶着されずに開口してい
る。容器本体２の開口部に口栓１を挿入して溶着する。The container shown in FIG. 1 is manufactured by inserting a plug 1 into a container body 2 and welding the container body 2 and the plug 1. In FIG. 1, both sides and the lower edge of the container body 2 before the plug 1 is inserted are welded. In FIG. 1, the container main body 2 is open at the upper end edge of the container main body 2 without welding. The plug 1 is inserted into the opening of the container body 2 and welded.
【０００４】このようにして容器本体に口栓を溶着する
方法は、口栓を容器本体に確実に密着することがとくに
大切である。薬液を充填する容器は、口栓と容器本体と
の間の空気漏れを皆無にすることが要求されるからであ
る。薬液に限らず、あらゆる液体を充填する容器は、口
栓と容器本体との漏れを防止するためにも、隙間なく密
着することが大切である。In the method of welding the plug to the container body in this way, it is particularly important that the plug is securely adhered to the container body. This is because a container filled with the chemical solution is required to eliminate any air leakage between the spout and the container body. It is important that the container to be filled with any liquid besides the chemical liquid be tightly adhered without any gap in order to prevent the leakage of the plug and the container body.
【０００５】[0005]
【発明が解決しようとする課題】口栓と容器本体との溶
着を確実にするために、種々の方法が提案されている。
たとえば、口栓と容器本体との熱溶着性を改善するため
に、口栓の熱溶着予定部分に、プラスチック製の接着チ
ューブを挿入する方法が採用されている。接着チューブ
は、口栓と容器本体の両方に熱溶着できるプラスチック
フィルムが使用される。この方法は、口栓に接着チュー
ブを挿入して溶着した後、口栓を容器本体に熱溶着す
る。この方法は、口栓の熱溶着予定部分の形状に合わせ
て、接着チューブを成形する必要がある。接着チューブ
が熱溶着予定部分の外形よりも大き過ぎると、接着チュ
ーブと熱溶着予定部分との間に隙間ができる。反対に接
着チューブが小さいと、口栓を挿入できなくなる。した
がって、接着チューブの製造に手間がかかる欠点があ
る。Various methods have been proposed to ensure the welding between the plug and the container body.
For example, in order to improve the heat welding property between the plug and the container body, a method of inserting a plastic adhesive tube into a portion of the plug that is to be heat-welded is adopted. For the adhesive tube, a plastic film that can be heat-sealed to both the spout and the container body is used. In this method, after the adhesive tube is inserted into the plug and welded, the plug is thermally welded to the container body. In this method, it is necessary to form an adhesive tube according to the shape of a portion of the plug to be heat-welded. If the size of the adhesive tube is larger than the outer shape of the portion to be thermally welded, a gap is formed between the adhesive tube and the portion to be thermally welded. Conversely, if the adhesive tube is small, the plug cannot be inserted. Therefore, there is a disadvantage that the production of the adhesive tube is troublesome.
【０００６】この欠点を解消する方法が、特公平４−８
２１０６号公報に記載される。この公報の方法は、口栓
の熱溶着予定部分に、熱溶着性のある接着層を一体成形
している。接着層は、口栓本体とは異なるプラスチック
で、容器本体のプラスチックに確実に熱溶着できる材質
である、未架橋のＥＶＡが使用される。この方法は、接
着層のある口栓を容器本体に熱溶着することによって、
容器本体と口栓とを確実に溶着することができる。た
だ、この方法は、口栓を製造するために、金型と構造と
成形工程とが複雑となり、口栓のコストが高くなる欠点
がある。A method for solving this disadvantage is disclosed in Japanese Patent Publication No.
No. 2106. According to the method disclosed in this publication, a heat-welding adhesive layer is integrally formed on a portion of the plug to be heat-welded. The adhesive layer is made of non-crosslinked EVA, which is a plastic different from the plug body and is a material that can be reliably heat-welded to the plastic of the container body. This method is to heat-weld a plug with an adhesive layer to the container body,
The container body and the plug can be reliably welded. However, this method has a drawback in that a mold, a structure, and a molding process are complicated to manufacture a plug, and the cost of the plug is increased.
【０００７】さらに、この公報に記載される方法は、図
１において符号１ａで示される口栓から離れる境界部分
にピンホールができることがある。また、落下したとき
等の衝撃で、容器のこの部分が破損しやすい欠点があ
る。それは、この部分で容器本体は極めて小さい曲率半
径で折曲され、しかも、熱溶着されるときに、金型の隅
角で強く押圧されるからである。Further, in the method described in this publication, a pinhole may be formed at a boundary portion away from the plug indicated by reference numeral 1a in FIG. Further, there is a disadvantage that this portion of the container is easily damaged by an impact such as when the container is dropped. This is because the container body is bent at this portion with a very small radius of curvature, and is strongly pressed at the corners of the mold when being thermally welded.
【０００８】この欠点は、特開平３−４９７６２号公
報、および実開昭６１−１９４６３８号公報に記載され
る方法で解消される。これ等の公報には、独得の形状を
した口栓を容器本体に溶着する技術が記載される。これ
等の公報に記載される容器は、図２に示すように、口栓
１の両側に、容器本体２に沿う突出部６を設けている。
この方法は、円筒状の口栓に比較すると容器本体に隙間
なく密着できる特長がある。This disadvantage can be solved by the methods described in JP-A-3-49762 and JP-A-61-194638. These publications describe a technique for welding a uniquely shaped plug to a container body. As shown in FIG. 2, the containers described in these publications are provided with protrusions 6 along the container body 2 on both sides of the plug 1.
This method has a feature that it can be adhered to the container body without any gap as compared with a cylindrical plug.
【０００９】しかしながら、これ等の公報に記載される
製造方法は、容器本体に溶着する口栓の位置を正確に合
わせる必要がある。口栓の位置が正確でないと、金型で
容器本体を加熱、押圧して溶着するときに、口栓の突出
部が変形し、あるいは折れてしまう欠点がある。突出部
の形状が狂うと、容器本体を口栓に気密に溶着できなく
なる。したがって、この方法は、口栓を正確に金型にセ
ットするのが難しく、製造装置が複雑で高価になる欠点
がある。However, the production methods described in these publications require that the position of the plug to be welded to the container body be accurately adjusted. If the position of the plug is not accurate, there is a disadvantage that when the container body is heated and pressed by a mold and welded, the protruding portion of the plug is deformed or broken. If the shape of the protruding portion is out of order, the container main body cannot be welded to the spout in an airtight manner. Therefore, this method has a disadvantage that it is difficult to accurately set the plug in the mold, and the manufacturing apparatus is complicated and expensive.
【００１０】本発明は、この欠点を解決することを目的
に開発されたものである。本発明の重要な目的は、容器
本体を保護して口栓を容器本体に確実に溶着でき、さら
に、ピンホールができるのを防止できる容器の製造方法
を提供することにある。The present invention has been developed to solve this drawback. An important object of the present invention is to provide a method for manufacturing a container that can protect a container body, reliably weld a plug to the container body, and prevent pinholes.
【００１１】[0011]
【課題を解決するための手段】本発明の容器の製造方法
は、前述の目的を達成するために下記のようにして容器
を製造する。本発明の容器の製造方法は、容器本体２に
口栓１を挿入し、容器本体２の表面を加熱金型４で押圧
して外部から加熱し、容器本体２を口栓１に押し付けて
溶着する方法を改良したものである。According to the method of manufacturing a container of the present invention, a container is manufactured as described below to achieve the above-mentioned object. In the method for manufacturing a container according to the present invention, the plug 1 is inserted into the container body 2, the surface of the container body 2 is pressed by the heating mold 4 and heated from the outside, and the container body 2 is pressed against the plug 1 and welded. This is an improved method of performing
【００１２】本発明の容器の製造方法は、口栓１の熱溶
着予定部分１Ａを挟むようにして、口栓１と容器本体２
の両方に熱溶着性を有し、かつ、口栓１の熱溶着予定部
分１Ａの表面から半径方向に突出する長さを有し、さら
に、容器本体２に溶着されて変形する可撓性を有する２
枚のプラスチック製の熱溶着フィルム７を溶着し、この
熱溶着フィルム７の表面に容器本体２を溶着して、熱溶
着フィルム７を介して容器本体２を口栓１に溶着するこ
とを特徴とする。In the method for manufacturing a container according to the present invention, the plug 1 and the container main body 2 are sandwiched by the portion 1A of the plug 1 to be thermally welded.
Have a length protruding in the radial direction from the surface of the portion 1A to be heat-welded of the plug 1, and have a flexibility of being deformed by being welded to the container body 2. Have 2
A plurality of plastic heat welding films 7 are welded, the container body 2 is welded to the surface of the heat welding film 7, and the container body 2 is welded to the plug 1 via the heat welding film 7. I do.
【００１３】[0013]
【作用】本発明の容器の製造方法は、図３と図４とに示
すように、口栓１の熱溶着予定部分１Ａに、口栓１を挟
むようにして、２枚の熱溶着フィルム７を溶着する。熱
溶着フィルム７は、熱溶着予定部分１Ａの全周から半径
方向に突出する幅を有する。したがって、口栓１に溶着
された熱溶着フィルム７は、対向する位置に突出部７Ａ
が設けられている。突出部７Ａは、熱溶着フィルム７を
積層したもので、自由に変形できる可撓性を有する。口
栓１と熱溶着フィルム７とは、口栓１に容器本体２を溶
着するのと同じ金型で溶着できる。したがって、熱溶着
フィルム７は、簡単な装置で、口栓１に溶着される。According to the method for manufacturing a container of the present invention, as shown in FIGS. 3 and 4, two heat-welding films 7 are welded to a portion 1A of a plug 1 to be thermally welded so as to sandwich the plug 1. I do. The heat welding film 7 has a width protruding in the radial direction from the entire circumference of the portion 1A to be heat-welded. Therefore, the heat welding film 7 welded to the plug 1 has the protruding portion 7A at the opposing position.
Is provided. The protruding portion 7A is formed by laminating the heat welding films 7, and has a flexibility that can be freely deformed. The plug 1 and the heat welding film 7 can be welded to each other with the same mold as used for welding the container body 2 to the plug 1. Therefore, the heat welding film 7 is welded to the plug 1 with a simple device.
【００１４】可撓性を有する熱溶着フィルム７を溶着し
た口栓１は、熱溶着フィルム７を介して容器本体２に溶
着される。容器本体２と口栓１とを溶着するときに、熱
溶着フィルム７は自由に変形する。このため、容器本体
２を口栓１に押圧して溶着する加熱金型によって、熱溶
着フィルム７が変形されても、熱溶着フィルム７は自由
に変形し、口栓１と容器本体２とは確実に溶着される。
さらに、熱溶着フィルム７を介して口栓１に溶着される
容器本体２は、厚い接着、緩衝層を介して口栓１に溶着
される状態となる。したがって、容器本体２と口栓１と
の間にピンホールができるのを極減して、耐衝撃強度を
改善できる。The plug 1 to which the flexible heat welding film 7 is welded is welded to the container body 2 via the heat welding film 7. When the container body 2 and the plug 1 are welded, the heat welding film 7 is freely deformed. For this reason, even if the heat welding film 7 is deformed by the heating mold that presses and welds the container body 2 to the plug 1, the heat welding film 7 is freely deformed, and the plug 1 and the container body 2 are separated. Welded securely.
Further, the container body 2 welded to the plug 1 via the heat welding film 7 is in a state of being welded to the plug 1 via a thick adhesive and buffer layer. Therefore, it is possible to minimize the occurrence of pinholes between the container body 2 and the plug 1 and to improve the impact resistance.
【００１５】[0015]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。ただし、以下に示す実施例は、本発明の技術思想
を具体化するための製造方法を例示するものであって、
本発明の製造方法は、容器本体と口栓の材質、形状、構
造、配置を下記のものに特定するものでなく、また、製
造条件、製造工程、製造装着等を下記のものに特定する
ものでもない。本発明の容器の製造方法は、特許請求の
範囲を逸脱しない範囲で種々の変更を加えることができ
る。Embodiments of the present invention will be described below with reference to the drawings. However, the following examples illustrate a manufacturing method for embodying the technical idea of the present invention,
The manufacturing method of the present invention does not specify the materials, shapes, structures, and arrangements of the container body and the spout in the following, and also specifies the manufacturing conditions, manufacturing process, manufacturing mounting, and the like in the following. not. Various changes can be made to the container manufacturing method of the present invention without departing from the scope of the claims.
【００１６】さらに、この明細書は、特許請求の範囲を
理解し易いように、実施例に示される部材に対応する番
号を、「特許請求の範囲の欄」、「作用の欄」、および
「課題を解決するための手段の欄」に示される部材に付
記している。ただ、特許請求の範囲に示される部材を、
実施例の部材に特定するものでは決してない。Further, in this specification, in order to make it easy to understand the claims, the numbers corresponding to the members shown in the embodiments are referred to as "claims", "actions", and "actions". In the column of "Means for solving the problem". However, the members shown in the claims are
It is by no means specific to the members of the embodiment.
【００１７】以下、図１に示す容器の製造方法の具体例
を詳述する。図１に示す容器は、容器本体２に口栓１を
溶着して製造される。容器本体２は、プラスチックシー
トの周縁を熱溶着して袋状としたものである。プラスチ
ックシートは、単層のプラスチックフィルム、あるい
は、複数のプラスチックフィルムを積層したものが使用
される。プラスチックシートの周縁を熱溶着し、また、
これに口栓１を溶着するために、容器本体２は、少なく
とも内面を熱可塑性プラスチックフィルムとし、あるい
は全体を熱可塑性プラスチックフィルムとする。口栓１
は、ポリエチレン等の熱可塑性プラスチックで円筒状に
成形されており、内部にゴム栓を包埋したキャップで閉
塞できるようにしている。Hereinafter, a specific example of the method for manufacturing the container shown in FIG. 1 will be described in detail. The container shown in FIG. 1 is manufactured by welding a plug 1 to a container body 2. The container main body 2 is formed by heat-welding the periphery of a plastic sheet into a bag shape. As the plastic sheet, a single-layer plastic film or a laminate of a plurality of plastic films is used. Heat sealing the periphery of the plastic sheet,
In order to weld the plug 1 to this, at least the inner surface of the container body 2 is made of a thermoplastic plastic film, or the whole is made of a thermoplastic plastic film. Faucet 1
Is formed in a cylindrical shape with a thermoplastic plastic such as polyethylene, and can be closed by a cap in which a rubber stopper is embedded.
【００１８】容器本体２は、最初に、口栓１を溶着する
部分を除く部分、すなわち、両側縁と下端縁とを熱溶着
し、その後、溶着されない開口部に口栓１を挿入して溶
着する。First, the container body 2 is heat-welded at a portion other than a portion where the plug 1 is welded, that is, at both side edges and a lower edge, and thereafter, the plug 1 is inserted into an opening that is not welded and welded. I do.
【００１９】口栓１は、容器本体２を溶着する前に、図
３と図４とに示すように、熱溶着フィルム７を溶着す
る。熱溶着フィルム７には、加熱金型４で加熱、押圧し
て口栓１の熱溶着予定部分１Ａに溶着される。したがっ
て、熱溶着フィルム７には、ポリエチレンフィルム等の
熱可塑性のプラスチックフィルムが使用される。熱溶着
フィルム７は、図３と図４とに示すように、両端を口栓
１から半径方向に突出できる長さ、すなわち、熱溶着予
定部分１Ａの円周の半分よりも長く裁断されている。長
い熱溶着フィルム７を口栓１に溶着すると、図４に示す
ように、熱溶着予定部分１Ａの両側に突出部７Ａができ
る。さらに、熱溶着フィルム７の幅は、容器本体２を溶
着する幅にほぼ等しく設計される。Before the spout 1 is welded to the container body 2, a heat welding film 7 is welded as shown in FIGS. The heat welding film 7 is heated and pressed by the heating mold 4 and welded to the heat welding scheduled portion 1A of the plug 1. Therefore, a thermoplastic plastic film such as a polyethylene film is used for the heat welding film 7. As shown in FIGS. 3 and 4, the heat welding film 7 is cut so that both ends can protrude from the plug 1 in the radial direction, that is, longer than half the circumference of the portion 1A to be heat welded. . When the long heat welding film 7 is welded to the plug 1, as shown in FIG. 4, protrusions 7A are formed on both sides of the portion 1A to be heat welded. Further, the width of the heat welding film 7 is designed to be substantially equal to the width of welding the container body 2.
【００２０】熱溶着フィルムは下記のようにして口栓の
熱溶着予定部分に溶着される。 図５に示すように、口栓１の外周を予備加熱する。
すなわち、口栓１の先端をリング状の予備加熱ヒーター
３に挿入し、予備加熱ヒーター３でもって、口栓１の表
面を予備加熱する。 図６に示すように、上下の熱溶着フィルム７の間に
口栓１を配設し、加熱金型４で熱溶着フィルム７を加熱
状態で挟み、熱溶着フィルム７を口栓１の熱溶着予定部
分１Ａに溶着する。溶着後、加熱金型４を開いて、加熱
金型４を熱溶着フィルム７から離す。 熱溶着フィルム７を溶着した口栓１を、冷却金型５
で挟着して強制的に冷却する。The heat welding film is welded to the portion of the plug to be heat welded as follows. As shown in FIG. 5, the outer periphery of the plug 1 is preheated.
That is, the tip of the plug 1 is inserted into the ring-shaped pre-heater 3, and the surface of the plug 1 is pre-heated by the pre-heater 3. As shown in FIG. 6, the plug 1 is disposed between the upper and lower heat welding films 7, the heat welding film 7 is sandwiched in a heating state by the heating mold 4, and the heat welding film 7 is heat welded to the plug 1. Weld to the scheduled portion 1A. After welding, the heating mold 4 is opened, and the heating mold 4 is separated from the heat welding film 7. The plug 1 to which the heat welding film 7 is welded is inserted into the cooling mold 5
And forced cooling.
【００２１】以上のようにして、口栓１に熱溶着フィル
ム７を溶着するとき、熱溶着フィルム７と加熱金型４と
の間に、耐熱剥離シート（図示せず）を挟着することも
できる。耐熱剥離シートは、熱溶着フィルムが加熱金型
の表面に溶着するのを防止する。耐熱剥離シートには、
熱溶着フィルム７の表面に沿って自由に変形するテフロ
ンシートが使用される。ただ、耐熱剥離シートには、テ
フロンシートに代わって、耐熱性と可撓性とがあり、ま
た、熱溶着フィルム７から簡単に剥離できる全てのシー
トを使用できる。耐熱剥離シートは、熱溶着フィルムを
加熱金型で溶着した後で剥離することもできるが、冷却
金型で冷却した後に剥離することもできる。冷却金型で
冷却した後で耐熱剥離シートを剥離すると、耐熱剥離シ
ートによって、熱溶着フィルムを正確に溶着できる。As described above, when the heat welding film 7 is welded to the plug 1, a heat resistant release sheet (not shown) may be sandwiched between the heat welding film 7 and the heating mold 4. it can. The heat-resistant release sheet prevents the heat welding film from welding to the surface of the heating mold. The heat-resistant release sheet includes
A Teflon sheet that freely deforms along the surface of the heat welding film 7 is used. However, in place of the Teflon sheet, any sheet that has heat resistance and flexibility and can be easily peeled off from the heat welding film 7 can be used as the heat-resistant release sheet. The heat-resistant peeling sheet can be peeled off after the heat-welding film is welded with a heating mold, but can also be peeled off after cooling with a cooling mold. When the heat-resistant release sheet is peeled off after cooling with the cooling mold, the heat-bonded film can be accurately welded by the heat-resistant release sheet.
【００２２】熱溶着フィルムを溶着した口栓は、次のよ
うにして、容器本体を溶着する。 図７に示すように、容器本体２の両面を吸盤８で吸
着して開口部を開く。 容器本体２の開口部に口栓１を挿入する。口栓１
は、熱溶着フィルム７の突出部７Ａが容器本体２のフィ
ルムと平行になるように、容器本体２に挿入する。 図８に示すように、加熱金型４の内側に容器本体２
を配設し、加熱金型４で容器本体２の表面を挟着して表
面から加熱する。この工程においても、容器本体と加熱
金型との間に耐熱剥離シートを配設し、耐熱剥離シート
によって、加熱金型が容器本体に接着するのを防止でき
る。 加熱金型４を開いた後、冷却金型５で容器本体２の
表面を挟着して強制的に冷却する。冷却金型５は容器本
体２を強制冷却するものであるから、加熱金型４が容器
本体２を挟着した口栓１の連結部分を挟着する。冷却金
型５は、容器本体２を効果的に冷却するために、図示し
ないが冷水や冷媒を循環して強制的に冷却し、あるいは
強制送風して強制冷却している。The plug with the heat-welding film welded thereto is welded to the container body as follows. As shown in FIG. 7, both sides of the container body 2 are sucked by the suction cup 8 to open the opening. The plug 1 is inserted into the opening of the container body 2. Faucet 1
Is inserted into the container body 2 so that the projecting portion 7A of the heat welding film 7 is parallel to the film of the container body 2. As shown in FIG. 8, the container body 2 is placed inside the heating mold 4.
Is disposed, and the surface of the container body 2 is sandwiched by the heating mold 4 and heated from the surface. Also in this step, a heat-resistant release sheet is provided between the container body and the heating mold, and the heat-resistant release sheet can prevent the heating mold from adhering to the container body. After opening the heating mold 4, the cooling mold 5 clamps the surface of the container body 2 to forcibly cool. Since the cooling mold 5 is for forcibly cooling the container body 2, the heating mold 4 clamps a connecting portion of the plug 1 which clamps the container body 2. In order to cool the container body 2 effectively, the cooling mold 5 is forcibly cooled by circulating cold water or a coolant (not shown), or is forcibly cooled by forced air blowing.
【００２３】容器本体２を加熱金型４で加熱するとき、
耐熱剥離シート（図示せず）を介して加熱することもで
きる。耐熱剥離シートを使用する場合、容器本体２を加
熱して冷却するまでの間、容器本体２の表面を被覆す
る。このように容器本体２の表面を被覆する耐熱剥離シ
ートは、加熱金型４で加熱されて溶融状態となった樹脂
の移動を規制し、ピンホール等の発生を防止する。When the container body 2 is heated by the heating mold 4,
Heating can also be performed via a heat-resistant release sheet (not shown). When a heat-resistant release sheet is used, the surface of the container body 2 is covered until the container body 2 is heated and cooled. The heat-resistant release sheet that covers the surface of the container body 2 regulates the movement of the resin that has been heated and melted by the heating mold 4 to prevent the occurrence of pinholes and the like.
【００２４】[0024]
【発明の効果】本発明のプラスチック容器の製造方法
は、口栓を容器本体に確実に隙間なく溶着できると共
に、容器本体にピンホールができるのを極減できる特長
がある。それは、本発明の製造方法が、口栓に熱溶着フ
ィルムを溶着し、この熱溶着フィルムを介して容器本体
を口栓に溶着するからである。容器本体と口栓との間に
介在する熱溶着フィルムは、容器本体が口栓から離れる
境界部分（図４において１ａで示す部分）のピンホール
を極減する。それは、容器本体と口栓との間に、熱溶着
フィルムを接着材として充填した状態で溶着できるから
である。いいかえると、容器本体を厚い接着層を介して
口栓に溶着できるからである。The method for manufacturing a plastic container according to the present invention has the features that the plug can be securely welded to the container body without any gap, and that pinholes can be minimized in the container body. This is because the manufacturing method of the present invention welds the heat-sealing film to the plug, and welds the container body to the plug via the heat-sealing film. The heat-sealing film interposed between the container body and the plug minimizes pinholes at the boundary portion (the portion indicated by 1a in FIG. 4) at which the container body separates from the plug. This is because the heat welding film can be welded between the container body and the plug in a state of being filled with the adhesive. In other words, the container body can be welded to the plug via the thick adhesive layer.
【００２５】さらに、この状態で容器本体と口栓とを溶
着する本発明の方法は、製造した容器の耐衝撃強度を向
上できる。とくに、容器本体が口栓から離れる境界部分
（図４において１ａで示す部分）の強度を改善できる特
長がある。それは、容器本体と口栓との間に介在する熱
溶着フィルムが、容器本体の境界部分１ａを補強するか
らである。Further, the method of the present invention for welding the container body and the plug in this state can improve the impact resistance of the manufactured container. Particularly, there is a feature that the strength of the boundary portion (the portion indicated by 1a in FIG. 4) where the container body is separated from the plug can be improved. This is because the heat welding film interposed between the container body and the spout reinforces the boundary portion 1a of the container body.
【００２６】さらにまた、本発明の容器の製造方法は、
容器本体を口栓に押圧して加熱するときに、口栓に溶着
した熱溶着フィルムの形状が狂い、あるいはこれが損傷
することがない。熱溶着フィルムに可撓性のあるプラス
チック製のフィルムを使用するからである。口栓に溶着
された熱溶着フィルムは、容器本体を加熱溶着する金型
によって自由に変形され、変形した状態で溶融して容器
本体と口栓とを溶着する。したがって、本発明の製造方
法は、口栓に突出部を一体成形する従来の製造方法のよ
うに、容器本体を溶着するときに突出部が変形、あるい
は折損してピンホールができるのを極減できる。Further, the method for producing a container according to the present invention comprises:
When the container body is pressed against the plug and heated, the shape of the heat-welded film welded to the plug is not disturbed or damaged. This is because a flexible plastic film is used as the heat welding film. The heat welding film welded to the spout is freely deformed by a mold for heating and welding the container body, and melts in the deformed state to weld the container body and the spout. Therefore, the manufacturing method of the present invention minimizes the possibility that a pinhole is formed due to the deformation or breakage of the protrusion when the container body is welded, as in the conventional manufacturing method of integrally forming the protrusion on the plug. it can.
【００２７】さらにまた、本発明の容器の製造方法は、
口栓に熱溶着フィルムを溶着し、この熱溶着フィルムを
介して容器本体を口栓に溶着するので、熱溶着フィルム
を口栓に溶着する金型と装置とを大きく改造することな
く、容器本体を口栓に直接に溶着する従来の装置を使用
して容器本体を口栓に確実に溶着できる特長もある。そ
れは、容器本体を口栓に溶着する金型を、熱溶着フィル
ムを口栓に溶着する金型に併用でき、あるいは、簡単な
構造の専用金型を使用して、熱溶着フィルムを口栓に溶
着できるからである。Further, the method for producing a container according to the present invention comprises:
The heat welding film is welded to the spout, and the container body is welded to the spout via this heat welding film. There is also a feature that the container body can be securely welded to the spout by using a conventional device for directly welding the spout to the spout. It is possible to use the mold for welding the container body to the spout together with the mold for welding the heat welding film to the spout, or use a special mold with a simple structure to apply the heat welding film to the spout. This is because welding can be performed.
【００２８】本発明の方法で製造した容器のピンホール
は、図９に示す測定装置で測定できる。この装置は、下
記のようにして使用する。 容器１０に水等の導電性の液体を充填する。 容器１０を、接地した台１１の上に載せる。 ピンホールができる部分に電極９を接近させる。電
極９は可能な限り、例えば０．５〜１ｍｍ程度に接近さ
せる。ただし、電極９は容器１０に接触させない。 電極９に所定の電圧をかける。容器１０にピンホー
ルがあると、通常の状態に比較して相当に低い電圧で放
電が発生する。それは、ピンホールによって絶縁が破壊
されるからである。The pinhole of the container manufactured by the method of the present invention can be measured by a measuring device shown in FIG. This device is used as follows. The container 10 is filled with a conductive liquid such as water. The container 10 is placed on a grounded table 11. The electrode 9 is made to approach a portion where a pinhole is formed. The electrode 9 is brought as close as possible to, for example, about 0.5 to 1 mm. However, the electrode 9 is not brought into contact with the container 10. A predetermined voltage is applied to the electrode 9. If the container 10 has a pinhole, discharge occurs at a considerably lower voltage than in a normal state. This is because the insulation is destroyed by the pinhole.
【００２９】図９に示すピンホールの測定装置を使用し
て、本発明の方法で製造した容器の放電電圧を測定した
結果、全ての容器の放電電圧は２０ｋＶ以上となり、ピ
ンホールが皆無であることが実証された。As a result of measuring the discharge voltage of the containers manufactured by the method of the present invention using the pinhole measuring device shown in FIG. 9, the discharge voltages of all the containers were 20 kV or more, and there was no pinhole. This has been proven.
【００３０】このように、本発明の容器の製造方法は、
容器本体のピンホールの発生を効果的に防止できること
に加えて、容器本体に口栓を確実に溶着できる特長もあ
る。それは、耐熱剥離シートが、加熱して冷却するまで
の間、容器本体を保護するので、容器本体の加熱温度を
多少高く設定しても、容器本体を保護して口栓を確実に
溶着できるからである。従来の製造方法は、口栓と容器
本体とを確実に溶着するために、容器本体の加熱温度を
高くすると、加熱した容器本体のプラスチックが流動し
てしまう欠点があった。ところが、本発明の製造方法
は、耐熱剥離シートが、加熱して冷却するまでの間、容
器本体を保護して口栓を溶着するので、容器本体の加熱
温度を多少高く設定しても、それによって容器本体にピ
ンホールが発生する弊害を防止でき、口栓を確実に容器
本体に溶着できる特長がある。As described above, the method for producing a container of the present invention comprises:
In addition to being able to effectively prevent the occurrence of pinholes in the container body, it also has the feature that the plug can be securely welded to the container body. This is because the heat-resistant release sheet protects the container body until it is heated and cooled, so even if the heating temperature of the container body is set slightly higher, the container body can be protected and the spout can be reliably welded. It is. The conventional manufacturing method has a drawback that when the heating temperature of the container body is increased in order to reliably weld the plug and the container body, the plastic of the heated container body flows. However, in the production method of the present invention, the heat-resistant release sheet protects the container body and welds the plug until the sheet is heated and cooled. This has the advantage that the adverse effect of pinholes in the container body can be prevented and the plug can be reliably welded to the container body.
【図１】本発明の方法で製造する容器の一例を示す斜視
図FIG. 1 is a perspective view showing an example of a container manufactured by the method of the present invention.
【図２】容器本体を口栓に溶着する従来例を示す断面図FIG. 2 is a cross-sectional view showing a conventional example in which a container body is welded to a plug.
【図３】口栓に熱溶着フィルムを溶着した状態を示す斜
視図、ただしこの図は、熱溶着フィルムをわかりやすく
するために、熱溶着フィルムの厚さを実際のものよりも
りも相当に厚くしているFIG. 3 is a perspective view showing a state in which the heat-sealing film is welded to the plug, in which the thickness of the heat-sealing film is considerably thicker than the actual one in order to make the heat-sealing film easier to understand. doing
【図４】口栓に熱溶着フィルムを溶着した状態を示す断
面図、この図も、図３に同じように、熱溶着フィルムを
実際のものよりも相当に厚くしているFIG. 4 is a cross-sectional view showing a state in which a heat-welding film is welded to a plug, and this figure also shows that the heat-welding film is considerably thicker than an actual thing, similarly to FIG.
【図５】口栓を予備加熱する状態を示す側面図FIG. 5 is a side view showing a state in which the spout is preheated.
【図６】口栓に熱溶着フィルムを溶着する状態を示す断
面図FIG. 6 is a cross-sectional view showing a state in which a heat welding film is welded to a plug.
【図７】熱溶着フィルムを溶着した口栓を容器本体に挿
入する状態を示す断面図FIG. 7 is a cross-sectional view showing a state in which a plug with a heat-sealing film welded is inserted into a container body.
【図８】熱溶着フィルムを溶着した口栓を容器本体に挿
入する状態を示す断面図FIG. 8 is a cross-sectional view showing a state in which a plug with a heat-sealing film welded is inserted into a container body.
【図９】容器のピンホールを測定する装置の概略側面図FIG. 9 is a schematic side view of an apparatus for measuring a pinhole of a container.
１…口栓 １Ａ…熱溶着予定部分 １ａ
…境界部分 ２…容器本体 ３…予備加熱ヒーター ４…加熱金型 ５…冷却金型 ６…突出部 ７…熱溶着フィルム ７Ａ…突出部 ８…吸盤 ９…電極 １０…容器 １１…台1 ... Mouth plug 1A ... Part to be welded by heat
... Boundary part 2 ... Container body 3 ... Preheating heater 4 ... Heating mold 5 ... Cooling mold 6 ... Protrusion 7 ... Heat welding film 7A ... Protrusion 8 ... Suction cup 9 ... Electrode 10 ... Container 11 ... Table
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B29C 65/02 A61J 1/10 B29C 65/50 B29L 22:00Continuation of the front page (58) Field surveyed (Int.Cl. 6 , DB name) B29C 65/02 A61J 1/10 B29C 65/50 B29L 22:00
Claims (1)
体(2)の表面を加熱金型(4)で押圧して外部から加熱し、
容器本体(2)を口栓(1)に押し付けて溶着する容器の製造
方法において、 口栓(1)の熱溶着予定部分(1A)を挟む状態で、口栓(1)と
容器本体(2)の両方に熱溶着性を有し、かつ、口栓(1)の
熱溶着予定部分(1A)の表面から半径方向に突出する長さ
を有し、さらに、容器本体(2)に溶着されて変形する可
撓性を有する２枚のプラスチック製の熱溶着フィルム
(7)を溶着し、この熱溶着フィルム(7)の表面に容器本体
(2)を溶着して、容器本体(2)が熱溶着フィルム(7)を介
して口栓(1)に溶着されることを特徴とするプラスチッ
ク容器の製造方法。Claims: 1. A plug (1) is inserted into a container body (2), the surface of the container body (2) is pressed by a heating mold (4) and heated from the outside,
In the method of manufacturing a container in which the container body (2) is pressed against the plug (1) and welded, the plug (1) and the container body (2 ), And has a length protruding in the radial direction from the surface of the portion (1A) to be heat-welded of the plug (1), and is further welded to the container body (2). Two plastic heat-sealing films with flexibility to deform
(7), and the container body is attached to the surface of this heat welding film (7).
A method for producing a plastic container, wherein (2) is welded and the container body (2) is welded to the plug (1) via a heat welding film (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17225393A JP2821657B2 (en) | 1993-06-17 | 1993-06-17 | Manufacturing method of plastic container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17225393A JP2821657B2 (en) | 1993-06-17 | 1993-06-17 | Manufacturing method of plastic container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH071587A JPH071587A (en) | 1995-01-06 |
| JP2821657B2 true JP2821657B2 (en) | 1998-11-05 |
Family
ID=15938468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17225393A Expired - Lifetime JP2821657B2 (en) | 1993-06-17 | 1993-06-17 | Manufacturing method of plastic container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2821657B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100794437B1 (en) * | 2004-03-30 | 2008-01-16 | 가부시키가이샤 호소카와 요코 | Method and apparatus for producing bag with mouth member |
| JP4673069B2 (en) * | 2004-03-30 | 2011-04-20 | 株式会社細川洋行 | Manufacturing method and manufacturing apparatus for bag with mouth member |
| WO2015107215A1 (en) * | 2014-01-20 | 2015-07-23 | Bielomatik Leuze Gmbh + Co. Kg | Method for controlling the degree of curing or the reaction intensity in an adhesive |
| US10155615B2 (en) | 2016-09-26 | 2018-12-18 | Dow Global Technologies Llc | Seal bar and process for using same |
| US10173821B2 (en) | 2016-09-26 | 2019-01-08 | Dow Global Technologies Llc | Flexible fitment for flexible container |
-
1993
- 1993-06-17 JP JP17225393A patent/JP2821657B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH071587A (en) | 1995-01-06 |
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