JP2766516B2 - Ultrasonic sealing method and apparatus - Google Patents

Ultrasonic sealing method and apparatus

Info

Publication number
JP2766516B2
JP2766516B2 JP1183984A JP18398489A JP2766516B2 JP 2766516 B2 JP2766516 B2 JP 2766516B2 JP 1183984 A JP1183984 A JP 1183984A JP 18398489 A JP18398489 A JP 18398489A JP 2766516 B2 JP2766516 B2 JP 2766516B2
Authority
JP
Japan
Prior art keywords
horn
anvil
end edge
tube
tube container
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 - Fee Related
Application number
JP1183984A
Other languages
Japanese (ja)
Other versions
JPH0349931A (en
Inventor
庄次 福島
元三郎 加藤
隆 望月
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pola Orbis Holdings Inc
Original Assignee
Pola Chemical Industries Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pola Chemical Industries Inc filed Critical Pola Chemical Industries Inc
Priority to JP1183984A priority Critical patent/JP2766516B2/en
Publication of JPH0349931A publication Critical patent/JPH0349931A/en
Application granted granted Critical
Publication of JP2766516B2 publication Critical patent/JP2766516B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • B29C66/43123—Closing the ends of squeeze tubes, e.g. for toothpaste or cosmetics
    • 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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • 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
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • 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
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B29C65/081—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations having a component of vibration not perpendicular to the welding surface
    • 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7861—In-line machines, i.e. feeding, joining and discharging are in one production line
    • B29C65/787—In-line machines, i.e. feeding, joining and discharging are in one production line using conveyor belts or conveyor chains
    • B29C65/7873—In-line machines, i.e. feeding, joining and discharging are in one production line using conveyor belts or conveyor chains using cooperating conveyor belts or cooperating conveyor chains
    • 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
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of 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
    • B29C66/70—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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • 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
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81419—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled and flat
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8221—Scissor or lever mechanisms, i.e. involving a pivot point
    • 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
    • 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
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83421—Roller, cylinder or drum types; Band or belt types; Ball types band or belt types
    • B29C66/83423—Roller, cylinder or drum types; Band or belt types; Ball types band or belt types cooperating bands or belts
    • 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
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • 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
    • B29C66/8324—Joining or pressing tools pivoting around one axis
    • 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
    • B29L2023/00—Tubular articles
    • B29L2023/20—Flexible squeeze tubes, e.g. for cosmetics

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Package Closures (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To prevent effectively the burr around sealed part from being generated by a method in which the end edge of the bottom aperture of a tube vessel is prelimi narily nipped with a pair of transferring belts and is flattened, and then in this state it is introduced between a horn and an anvil, and further the end edge of the bottom aperture is nipped with the horn and the ambil and is welded by ultrasonic wave vibration. CONSTITUTION:While the side of a vessel cap A, is set down, the end edge A2 of a bottom aperture is introduced from the drawing side 1a of a pair of transferring belts 1 and is preliminarily nipped. The thickness of the end edge of the bottom aper ture of a tube vessel A is thinned more than the width between a horn 2 and an anvil 3 by introducing the end edge between the transferring belts. The nipping with a pair of transferring belts 1 is generally carried out until the thickness of the tube becomes 10mm or less. Next, while in the state of this thickness, the tube vessel is transferred with the conveyer 5 by the transferring belt 1, the end edge A2 of the bottom aperture of the tube vessel A is introduced between the horn 2 and the anvil 3. Then, the end edge A2 of the tube vessel A is nipped with the horn 2 and the anvil 3 along the transferring belt 1, and the end edge A2 of the bottom aperture of the tube is sealed by the friction heat generated due to ultrasonic wave vibration in the state where the nipped state by the transferring belts 1 is kept.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、超音波シール方法に関し、更に詳しくは、
熱可塑性樹脂で形成されたチューブ容器の底部開口部を
シールする超音波シール方法に関する。The present invention relates to an ultrasonic sealing method, and more particularly, to an ultrasonic sealing method.
The present invention relates to an ultrasonic sealing method for sealing a bottom opening of a tube container formed of a thermoplastic resin.

〔従来の技術〕[Conventional technology]

従来、チューブ容器の底部開口端縁をホーンとアンビ
ルとで挟み、超音波振動を加えてその摩擦熱で溶融して
シールするにあたっては、従来、第５図に示したような
ジョー（Jaw）10と呼ばれるチャックで容器底部開口端
縁を挟持してから、その挟持状態を維持したままホーン
とアンビルとでチューブ容器の底部開口端縁を挟んでシ
ールしている。Conventionally, when an edge of the bottom opening of a tube container is sandwiched between a horn and an anvil, ultrasonic vibration is applied to melt and seal by frictional heat, a jaw (Jaw) 10 as shown in FIG. After the edge of the opening at the bottom of the container is sandwiched by a chuck called a horn, the horn and the anvil are sealed while sandwiching the edge of the bottom opening of the tube container while maintaining the sandwiched state.

〔発明が解決しようとする課題〕[Problems to be solved by the invention]

ところで、上記の従来の超音波シール方法の場合、第
４図に示すように、チューブ容器の封印部分11と非封印
部分12との境界線にバリ13（flash）が発生することが
多いという問題点があった。By the way, in the case of the above-mentioned conventional ultrasonic sealing method, as shown in FIG. 4, there is a problem that burrs 13 (flash) often occur at the boundary between the sealed portion 11 and the unsealed portion 12 of the tube container. There was a point.

バリ13の発生は単にチューブ容器の外観上の美しさを
損ねるだけでなく、封印部分11にピンホールを生じさ
せ、結果的にはシール強度を低下させる原因にもなると
いう問題点を生じさせるおそれがある。The occurrence of burrs 13 not only impairs the appearance of the tube container, but also causes pinholes in the sealing portion 11, which may cause a problem that the sealing strength is reduced. There is.

本発明は、上記のような従来の問題点を解消するた
め、チューブ容器の封印部分周囲のバリの発生を有効に
防止できる超音波シール方法及び装置を提供することを
技術的課題とする。An object of the present invention is to provide an ultrasonic sealing method and apparatus capable of effectively preventing the generation of burrs around a sealed portion of a tube container in order to solve the conventional problems as described above.

〔課題を解決するための手段〕[Means for solving the problem]

本発明は、前記課題を解決するため、以下の手段を採
用した。The present invention employs the following means in order to solve the above problems.

すなわち、熱可塑性樹脂で形成されたチューブ容器Ａ
の底部開口端縁A2を超音波振動装置のホーン２とアンビ
ル３とで挟持して、超音波振動による摩擦熱でチューブ
容器Ａの底部開口部を封印シールするにあたり、一対の
搬送ベルト１でチューブ容器Ａの底部開口端縁A2をあら
かじめ挟持して偏平にし、その状態のままホーン２とア
ンビル３間に導入し、その後、前記一対の搬送ベルト１
で挟持した状態のままホーン２とアンビル３とで底部開
口端縁A2を挟持して超音波振動により溶着する超音波シ
ール方法である。That is, a tube container A formed of a thermoplastic resin
The bottom opening edge A2 is sandwiched between the horn 2 and the anvil 3 of the ultrasonic vibration device, and the bottom opening of the tube container A is sealed with the frictional heat generated by the ultrasonic vibration. The bottom opening edge A2 of the container A is sandwiched and flattened in advance, and is introduced between the horn 2 and the anvil 3 in that state.
This is an ultrasonic sealing method in which the bottom opening edge A2 is sandwiched between the horn 2 and the anvil 3 while being sandwiched, and welded by ultrasonic vibration.

また、その装置として、チューブ容器Ａの底部開口端
縁A2を挟んで偏平状態にして前記ホーン２とアンビル３
との間に導く、一対の搬送ベルト１を設けた超音波シー
ル装置を提供する。Further, as the device, the horn 2 and the anvil 3 are made flat by sandwiching the bottom opening edge A2 of the tube container A.
To provide an ultrasonic sealing device provided with a pair of conveyor belts 1 for guiding between them.

〔作用〕[Action]

チューブ容器をシールする際、容器にはその長さ方向
（軸方向）にも、胴方向にも膨張するような挙動が見ら
れる。When a tube container is sealed, the container behaves in such a manner that it expands in both the length direction (axial direction) and the trunk direction.

従来のジョーで挟持してしまうシール方法では、この
ような膨張をジョーで強制的に押さえてしまう結果とな
り、膨張に伴って生じる歪、あるいは、超音波振動によ
り溶融した樹脂は逃げ場を失い、前記したような、バリ
の発生などのシール欠陥の原因となっていたと推定され
る。In the conventional sealing method in which the jaws are sandwiched, such expansion is forcibly suppressed by the jaws, and the distortion caused by the expansion, or the resin melted by the ultrasonic vibration loses the escape place, and It is presumed that this was the cause of seal defects such as generation of burrs.

本発明では、一対の搬送ベルト１でチューブ容器Ａの
底部開口端縁A2を挟持して偏平にし、その状態のままシ
ールするので、シールの際シール部分に生じる応力や歪
が周囲に容易に逃げることが可能で、上記のような欠陥
が生じにくいものと考えられる。In the present invention, since the bottom opening edge A2 of the tube container A is sandwiched and flattened by the pair of conveyor belts 1 and sealed in that state, the stress and strain generated in the sealed portion during sealing easily escape to the surroundings. Therefore, it is considered that the above-mentioned defects are unlikely to occur.

〔実施例〕〔Example〕

以下、本発明の実施例を図面に基づいて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

本実施例の超音波シール装置は、第１図に示したよう
に、溶着面に対して超音波振動を斜め方向に与える、斜
め振動型超音波シール装置である。As shown in FIG. 1, the ultrasonic sealing device of this embodiment is an oblique vibration type ultrasonic sealing device that applies ultrasonic vibration to a welding surface in an oblique direction.

この斜め振動型に対し、溶着面に対して直交方向に超
音波振動を与える縦振動型、溶着面に対して平行方向に
超音波振動を与える横振動型があり、いずれも本発明に
適用可能であるが、斜め振動型が最も好適である。チュ
ーブ容器Ａのシールにあたっては、斜め振動型が、シー
ル時の横スベリ防止等の面で有利である。In contrast to the oblique vibration type, there are a vertical vibration type that applies ultrasonic vibrations in a direction perpendicular to the welding surface and a horizontal vibration type that applies ultrasonic vibrations in a direction parallel to the welding surface. Both types can be applied to the present invention. However, the oblique vibration type is most preferable. In sealing the tube container A, the oblique vibration type is advantageous in terms of prevention of lateral slippage at the time of sealing.

また、ホーン２（振動子）とアンビル３（固定子）の
対向する挟持面には、すべり止め等の作用をする、各種
凹凸模様を刻設するが、本発明との組合せにおいてとり
わけハニカム型のパターンが好適である。これは、特開
昭62−246717号公報にて、本件出願人が提案したもので
ある。In addition, various concave / convex patterns, such as slip prevention, are engraved on opposing sandwiching surfaces of the horn 2 (vibrator) and the anvil 3 (stator). Patterns are preferred. This is proposed by the present applicant in Japanese Patent Application Laid-Open No. 62-246717.

上記ホーン２とアンビル３とは少なくともいずれか一
方が、対向する方向に進退自在で、両者間で容器を挟持
できるようになっている。At least one of the horn 2 and the anvil 3 is capable of moving forward and backward in opposite directions so that the container can be sandwiched between the two.

このホーン２側とアンビル３側にそれぞれ無端の搬送
ベルト１が設けられ、対向して対をなしている。この一
対の搬送ベルト１は、対向方向に接離自在に形成されて
いる。このベルト１の材質は合成樹脂、天然ゴム、合成
ゴム、天然皮革、合成皮革等が挙げられるが、シール時
の振動を吸収し易くし、また、チューブ容器の表面の損
傷を防止する意味では、上記材質の外面にスポンジ、不
織布、ポリエステル等とスポンジ体との組合せ等の弾性
を有するものを接着したベルトが好ましい。Endless transport belts 1 are provided on the horn 2 side and the anvil 3 side, respectively, and form a pair facing each other. The pair of transport belts 1 are formed so as to be able to freely contact and separate in the facing direction. Examples of the material of the belt 1 include synthetic resin, natural rubber, synthetic rubber, natural leather, and synthetic leather. In terms of facilitating absorption of vibration at the time of sealing and preventing damage to the surface of the tube container, A belt in which an elastic material such as a combination of a sponge, a nonwoven fabric, a polyester or the like and a sponge body is bonded to the outer surface of the above material is preferable.

なお、本発明によりシール可能なチューブ容器Ａの素
材としては、熱可塑性樹脂、例えば、低密度ポリエチレ
ン、中密度ポリエチレン、若しくは、高密度ポリエチレ
ン、又はこれらのポリエチレン樹脂相互間の積層体、又
は、これらのポリエチレン樹脂と、これら以外の樹脂す
なわち、ナイロン若しくはエチレン酢酸ビニル共重合体
などとの積層体が挙げられる。特に、低密度ポリエチレ
ン／中密度ポリエチレンの積層体、低密度ポリエチレン
／エチレン酢酸ビニル共重合体／低密度ポリエチレンの
積層体、低密度ポリエチレン／ナイロン／低密度ポリエ
チレンの積層体などによる積層チューブ容器について、
大きな効果を発揮する。In addition, as a material of the tube container A that can be sealed according to the present invention, a thermoplastic resin, for example, low-density polyethylene, medium-density polyethylene, or high-density polyethylene, or a laminate of these polyethylene resins, or And a resin other than these, ie, a laminate of nylon or ethylene-vinyl acetate copolymer. In particular, a laminated tube container made of a low density polyethylene / medium density polyethylene laminate, a low density polyethylene / ethylene vinyl acetate copolymer / low density polyethylene laminate, a low density polyethylene / nylon / low density polyethylene laminate, etc.
It has a great effect.

上記した装置で、チューブ容器の底部をシールするに
は、第１図の概念図、第２図のシール工程図に示すよう
に、容器キャップA1側を下にして、底部開口端縁A2を一
対の搬送ベルト１の引き込み側1aから導入してあらかじ
め挟む。導入開始時点は第３図のタイミングチャート図
で０°の部分である。なお、第３図は搬送ベルト１によ
る搬送を２サイクル行う間に、１回シールするものであ
る。In order to seal the bottom of the tube container with the above-mentioned apparatus, as shown in the conceptual diagram of FIG. 1 and the sealing process diagram of FIG. Of the conveyor belt 1 from the pull-in side 1a. The introduction start time is a portion at 0 ° in the timing chart of FIG. FIG. 3 shows a case where sealing is performed once during two cycles of transport by the transport belt 1.

搬送ベルト１間への導入により、チューブ容器Ａの底
部開口端縁は厚さがホーン２とアンビル３との間の幅よ
り薄くなる。導入に際しては、チューブ容器Ａの底部開
口端縁側はまず最初に容器がつぶれてから搬送されるの
に対し、容器キャップA1側はコンベア５でダイレクトに
搬送されるため、両者の搬送速度が同一でも、チューブ
容器Ａの底部開口端縁側に搬送遅れが生じ、チューブ容
器Ａが傾く。そこで、底部開口端縁A2を一対の搬送ベル
ト１間に引き込んだ後、一対の搬送ベルト１を一旦開い
てチューブ容器Ａが自力で垂直になってから、再度チュ
ーブ容器Ａで挟持するようにする。第３図中段の270°
〜360°区間はこの容器倒れ修正動作を示す。Due to the introduction between the conveyor belts 1, the bottom opening edge of the tube container A becomes thinner than the width between the horn 2 and the anvil 3. At the time of introduction, the bottom opening edge side of the tube container A is firstly conveyed after the container is crushed, whereas the container cap A1 side is directly conveyed by the conveyor 5, so that even if the conveyance speed of both is the same. Then, a transport delay occurs on the bottom opening edge side of the tube container A, and the tube container A is inclined. Then, after pulling the bottom opening edge A2 between the pair of conveyor belts 1, the pair of conveyor belts 1 is once opened, and the tube container A becomes vertical by itself, and is again sandwiched by the tube container A. . 270 ° in the middle of Fig. 3
The 360 ° section shows this container falling correction operation.

一対の搬送ベルト１での挟持は、通常、チューブの厚
さが10m/m以下となる程度とする。次いでこの厚さの状
態のままコンベア５とともに搬送ベルト１で搬送してホ
ーン２とアンビル３との間にチューブ容器Ａの底部開口
端縁A2を導入する（第３図の０°〜90°）。この時、次
回にシールすべきチューブ容器Ａが、一対の搬送ベルト
１間に導入される。Normally, the thickness of the tube between the pair of conveyor belts 1 is about 10 m / m or less. Next, while maintaining this thickness, the conveyor belt 5 is transported together with the transport belt 1 to introduce the bottom opening edge A2 of the tube container A between the horn 2 and the anvil 3 (0 ° to 90 ° in FIG. 3). . At this time, the tube container A to be sealed next time is introduced between the pair of transport belts 1.

次いで、搬送ベルト１にそったホーン２とアンビル３
とでチューブ容器Ａの端縁A2を挟み、搬送ベルト１によ
る挟持状態を維持したままチューブの底部開口端縁A2を
超音波振動による摩擦熱でシールする。Next, the horn 2 and the anvil 3 along the conveyor belt 1
Then, the edge A2 of the tube container A is sandwiched, and the edge A2 at the bottom opening of the tube is sealed with frictional heat generated by ultrasonic vibration while the sandwiched state by the conveyor belt 1 is maintained.

シール時に一対の搬送ベルト１を退避させずに、容器
を挟持したままにしておくことで、バリやピンホールの
発生がないばかりか、シール音の減少、シール強度、シ
ール時間の安定化が図れ、シール時のチューブ樹脂の飛
散が少なくなるという効果もあった。これは、搬送ベル
ト１が容器の無駄な振動を吸収する結果であると推定さ
れる。By keeping the pair of conveyor belts 1 without retreating and holding the container at the time of sealing, not only generation of burrs and pinholes but also reduction of sealing sound, sealing strength and stabilization of sealing time can be achieved. Further, there is also an effect that scattering of the tube resin at the time of sealing is reduced. This is presumed to be the result of the transport belt 1 absorbing useless vibration of the container.

この実施例における実際のシール状況を示すと第１表
に示したごとくである。Table 1 shows the actual sealing status in this embodiment.

ここで、Ａとは、φ35mm、肉厚0.45mmで低密度ポリエ
チレン／エチレン酢酸ビニル共重合体／低密度ポリエチ
レンからなる積層体で、 Ｂとは、φ45mm、肉厚0.45mmで低密度ポリエチレン／
中密度ポリエチレンからなる積層体である。 Here, A is a laminate of low-density polyethylene / ethylene-vinyl acetate copolymer / low-density polyethylene having a diameter of 35 mm and a thickness of 0.45 mm, and B is a low-density polyethylene having a diameter of 45 mm and a wall thickness of 0.45 mm.
It is a laminate made of medium density polyethylene.

＜比較例＞ チューブ容器Ａ一端側A3を１対の搬送ベルト１に送り
込んだ後、ホーン２とアンビル３によるシール時に前記
一対の搬送ベルト１による容器の挟持を中止し、この一
対の搬送ベルト１を互いに離反する方向に退避させれ
ば、より効果的ではないかとの予想をし、第３図のタイ
ミングチャートの上段のような工程でシールしたとこ
ろ、予想に反し、実施例ほど良好ではなかった。<Comparative Example> After feeding one end A3 of the tube container A to the pair of conveyor belts 1, the pair of conveyor belts 1 stopped holding the container by the pair of conveyor belts 1 when the horn 2 and the anvil 3 sealed. It was predicted that if the evacuation was performed in the direction away from each other, it would be more effective, and sealing was performed in a process as shown in the upper stage of the timing chart of FIG. .

品目、生産数、バリの発生率を第２表に示す。 Table 2 shows the items, production numbers, and burr occurrence rates.

本発明の実施例では、比較例に比較し、バリの発生が
予防され、しかも、シール時に発生する音の量が小さく
なり、シール時間、シール強度が安定し、更に、シール
時のチューブ樹脂の飛散が少なくなるという効果も生じ
ることが分かった。 In the embodiment of the present invention, compared to the comparative example, the generation of burrs is prevented, and the amount of sound generated at the time of sealing is reduced, the sealing time, the sealing strength is stabilized, and further, the resin of the tube at the time of sealing is reduced. It has been found that the effect of reducing scattering is also produced.

〔発明の効果〕〔The invention's effect〕

本発明は上記のような構成で形成されるから、チュー
ブ容器の封印部分周囲のバリの発生等シール不良を有効
に防止できる。Since the present invention is formed with the above configuration, it is possible to effectively prevent poor sealing such as generation of burrs around the sealed portion of the tube container.

【図面の簡単な説明】[Brief description of the drawings]

第１図は本発明の実施例を示す概念図、第２図はチュー
ブの流れを示す図、第３図はホーンとアンビルによる挟
持のタイミングと搬送ベルトの離反時期のタイミングを
示したチャート図、第４図はチューブ容器のバリの様子
を示す図、第５図は従来の挟持装置（Jaw）を示す斜視
図である。 １……一対の搬送ベルト、２……ホーン、３……アンビ
ル、Ａ……チューブ容器、A2……底部開口端縁。FIG. 1 is a conceptual diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing a flow of a tube, FIG. 3 is a chart showing a timing of pinching by a horn and an anvil, and a timing of a separation timing of a conveyor belt. FIG. 4 is a view showing a state of burrs of the tube container, and FIG. 5 is a perspective view showing a conventional holding device (Jaw). 1 ... a pair of conveyor belts, 2 ... horn, 3 ... anvil, A ... tube container, A2 ... bottom opening edge.

フロントページの続き (56)参考文献 特開 昭62−246716（ＪＰ，Ａ) 特開 平１−133718（ＪＰ，Ａ) 特公 昭40−9709（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.6，ＤＢ名) B29C 65/08 B65B 51/10Continuation of the front page (56) References JP-A-62-246716 (JP, A) JP-A-1-133718 (JP, A) JP-B-40-9709 (JP, B1) (58) Fields investigated (Int) .Cl. 6 , DB name) B29C 65/08 B65B 51/10

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】熱可塑性樹脂で形成されたチューブ容器Ａ
の底部開口端縁A2を超音波振動装置のホーン２とアンビ
ル３とで挟持して、超音波振動による摩擦熱でチューブ
容器Ａの底部開口部を封印シールするにあたり、 一対の搬送ベルト１でチューブ容器Ａの底部開口端縁A2
をあらかじめ挟持して偏平にし、その状態のままホーン
２とアンビル３間に導入し、その後、前記一対の搬送ベ
ルト１で挟持した状態のままホーン２とアンビル３とで
底部開口端縁A2を挟持して超音波振動により溶着するチ
ューブ容器の超音波シール方法。1. A tube container A formed of a thermoplastic resin.
In order to seal the bottom opening edge A2 of the tube container A with the horn 2 and the anvil 3 of the ultrasonic vibration device and to seal the bottom opening of the tube container A with frictional heat generated by the ultrasonic vibration, the pair of transport belts 1 Opening edge A2 at the bottom of container A
Is flattened in advance, and is introduced between the horn 2 and the anvil 3 in that state. Then, the horn 2 and the anvil 3 hold the bottom opening edge A2 between the horn 2 and the anvil 3 while being sandwiched by the pair of transport belts 1. Ultrasonic sealing method of a tube container to be welded by ultrasonic vibration. 【請求項２】熱可塑性樹脂で形成されたチューブ容器Ａ
の底部開口端縁A2を超音波振動装置のホーン２とアンビ
ル３とで挟持して、超音波振動による摩擦熱でチューブ
容器Ａの底部開口部を封印シールする装置において、 チューブ容器Ａの底部開口端縁A2を挟んで偏平状態にし
て前記ホーン２とアンビル３との間に導く、一対の搬送
ベルト１を設けた超音波シール装置。2. A tube container A formed of a thermoplastic resin.
The bottom opening edge A2 of the tube container A is sandwiched between the horn 2 and the anvil 3 of the ultrasonic vibration device, and the bottom opening of the tube container A is sealed with frictional heat generated by ultrasonic vibration. An ultrasonic sealing device provided with a pair of transport belts 1 that is guided flat between the horn 2 and the anvil 3 with the edge A2 interposed therebetween.
JP1183984A 1989-07-17 1989-07-17 Ultrasonic sealing method and apparatus Expired - Fee Related JP2766516B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1183984A JP2766516B2 (en) 1989-07-17 1989-07-17 Ultrasonic sealing method and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1183984A JP2766516B2 (en) 1989-07-17 1989-07-17 Ultrasonic sealing method and apparatus

Publications (2)

Publication Number Publication Date
JPH0349931A JPH0349931A (en) 1991-03-04
JP2766516B2 true JP2766516B2 (en) 1998-06-18

Family

ID=16145282

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1183984A Expired - Fee Related JP2766516B2 (en) 1989-07-17 1989-07-17 Ultrasonic sealing method and apparatus

Country Status (1)

Country Link
JP (1) JP2766516B2 (en)

Also Published As

Publication number Publication date
JPH0349931A (en) 1991-03-04

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