JPH08230834A - Seal device - Google Patents

Seal device

Info

Publication number
JPH08230834A
JPH08230834A JP3574795A JP3574795A JPH08230834A JP H08230834 A JPH08230834 A JP H08230834A JP 3574795 A JP3574795 A JP 3574795A JP 3574795 A JP3574795 A JP 3574795A JP H08230834 A JPH08230834 A JP H08230834A
Authority
JP
Japan
Prior art keywords
packaging material
inductor
sealing
seal
cutting
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
Application number
JP3574795A
Other languages
Japanese (ja)
Other versions
JP3734847B2 (en
Inventor
Keiji Yano
恵治 矢野
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.)
NIPPON TETRA PACK KK
Nihon Tetra Pak KK
Original Assignee
NIPPON TETRA PACK KK
Nihon Tetra Pak KK
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 NIPPON TETRA PACK KK, Nihon Tetra Pak KK filed Critical NIPPON TETRA PACK KK
Priority to JP3574795A priority Critical patent/JP3734847B2/en
Publication of JPH08230834A publication Critical patent/JPH08230834A/en
Application granted granted Critical
Publication of JP3734847B2 publication Critical patent/JP3734847B2/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
    • B29C66/70—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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/723—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 structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72321—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3656—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint being a layer of a multilayer part to be joined, e.g. for joining plastic-metal laminates
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3676—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic
    • B29C65/368—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic with a polymer coating
    • 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
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/745—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool
    • B29C65/7451—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool the severing tool and the welding tool being movable with respect to one-another
    • 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
    • B29C66/40—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
    • 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
    • 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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/723—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 structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72327—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • 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
    • B29C66/81427—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 comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • 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
    • B29C66/81431—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 comprising a single cavity, e.g. a groove
    • 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
    • B29C66/8145—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • 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
    • B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • B29C66/81811—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects of the welding jaws
    • 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
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83541—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement
    • B29C66/83543—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement cooperating flying jaws
    • 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
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • 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
    • B29L2031/7162—Boxes, cartons, cases
    • B29L2031/7166—Cartons of the fruit juice or milk type, i.e. containers of polygonal cross sections formed by folding blanks into a tubular body with end-closing or contents-supporting elements, e.g. gable type containers

Abstract

PURPOSE: To provide a seal device which prevents the connection strength from decreasing in the seal part. CONSTITUTION: A seal device is provided with a seal block 19, inductors 31, 32 buried in the seal block 19 so as to expose a part thereof on the surface, a dolly oppositely positioned to the inductors 31, 32, holding a packaging material between the inductors, and a high frequency voltage application means for the inductors. The inductors 31, 32 are provided with protrusions 71, 72 longitudinally protruded toward the dolly and grooves formed parallelly to the protrusions at both sides thereof. The resin of the packaging material oppositely positioned is molten and even if it is pressed by the protrusions 71, 72, a base paper material and an aluminum foil are stretched and hence, a polyethylene resin is retained there.

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、シール装置に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing device.

【０００２】[0002]

【従来の技術】従来、牛乳、清涼飲料水等の液体食品が
充填（じゅうてん）された、例えば、ブリック型の包装
容器を製造する場合、包装機において可撓（かとう）性
の積層体から成るウェブ状の包材を搬送しながら連続的
にチューブ状にし、該チューブ状の包材内に液体食品を
充填することによって包装容器を製造するようになって
いる。2. Description of the Related Art Conventionally, for example, in the case of manufacturing a brick type packaging container filled with liquid food such as milk and soft drink, it is composed of a flexible laminate in a packaging machine. A packaging container is manufactured by continuously making a web-shaped packaging material into a tube shape while filling the tube-shaped packaging material with a liquid food.

【０００３】そのために、包材製造機によって製造され
たウェブ状の包材を、リールの状態で包装機にセット
し、繰出機によって繰り出して包装機内を搬送し、縦方
向にシールしてチューブ状にする。この場合、前記包材
は、紙基材、該紙基材の両面に被覆されたフィルム、必
要に応じて紙基材とフィルムとの間に配設されたアルミ
ニウムホイル等から成る積層体構造を有する。For this purpose, the web-shaped packaging material manufactured by the packaging material manufacturing machine is set in a reel state on the packaging machine, and is fed by the feeding machine to be conveyed inside the packaging machine and sealed in the longitudinal direction to form a tubular shape. To In this case, the packaging material has a laminated structure composed of a paper base material, a film coated on both sides of the paper base material, and an aluminum foil disposed between the paper base material and the film, if necessary. Have.

【０００４】そして、チューブ状の包材が下方に搬送さ
れる間に液体食品を上方から供給して包材内に充填す
る。次に、該包材を両側から挟持し、所定の間隔ごとに
横方向にシールし、枕（まくら）状、袋状等の原型容器
を形成する。続いて、横方向に延びるシール部分を切断
し、各原型容器をあらかじめ形成された折り目に沿って
所定の形状に成形し、一定量の液体食品を収容する複数
の包装容器を完成させるようになっている。Then, while the tubular packaging material is conveyed downward, the liquid food is supplied from above to fill the packaging material. Next, the packaging material is sandwiched from both sides and laterally sealed at predetermined intervals to form a prototype container having a pillow shape, a bag shape, or the like. Subsequently, the seal portion extending in the lateral direction is cut, each prototype container is formed into a predetermined shape along a fold line formed in advance, and a plurality of packaging containers for storing a certain amount of liquid food are completed. ing.

【０００５】ところで、前記包材を縦方向又は横方向に
シールする場合、包材の表面のフィルムを互いに対向さ
せ、インダクタ等のシール装置によって包材中のアルミ
ニウムホイルを発熱させ、圧力を加えることによって、
前記フィルムを熱融着させ、接合するようにしている。
図２は従来のシール装置の第１工程図、図３は従来のシ
ール装置の第２工程図、図４は従来のシール装置の第３
工程図である。By the way, when the packaging material is vertically or horizontally sealed, the films on the surfaces of the packaging material are opposed to each other, and the aluminum foil in the packaging material is heated by a sealing device such as an inductor to apply pressure. By
The films are heat-sealed and joined together.
2 is a first process diagram of a conventional sealing device, FIG. 3 is a second process diagram of a conventional sealing device, and FIG. 4 is a third process diagram of a conventional sealing device.
It is a process drawing.

【０００６】図において、１１はチューブ状の包材、５
１、５２はシール部分において互いに対向させられるウ
ェブ状の包材である。各包材５１、５２は、紙基材５
４、該紙基材５４の内側の表面に被覆されたアルミニウ
ムホイル５５、及び該アルミニウムホイル５５の更に内
側の表面に被覆されたフィルム、例えば、ポリエチレン
樹脂５６から成り、積層体構造を有する。なお、前記紙
基材５４の外側の表面にも、通常、図示しないフィル
ム、例えば、ポリエチレン樹脂が被覆される。この場
合、各包材５１、５２のポリエチレン樹脂５６同士が熱
融着によって接合される。In the figure, 11 is a tubular packaging material, and 5
Numerals 1 and 52 are web-shaped packaging materials that are opposed to each other at the seal portion. Each packaging material 51, 52 is a paper base material 5.
4, an aluminum foil 55 coated on the inner surface of the paper base 54, and a film, for example, a polyethylene resin 56, coated on the inner surface of the aluminum foil 55, and has a laminated structure. The outer surface of the paper base 54 is usually covered with a film (not shown) such as polyethylene resin. In this case, the polyethylene resins 56 of the packaging materials 51 and 52 are joined by heat fusion.

【０００７】前記包材１１をシールし、切断するために
シール装置が配設される。該シール装置は、互いに対向
させて配設されたカッティングジョー及びヒートシール
ジョーを有し、前記カッティングジョーにカッティング
レール６１が、前記ヒートシールジョーにシールブロッ
ク６２が配設される。そして、前記カッティングレール
６１間に形成された間隙（かんげき）に図示しないカッ
タが配設される。A sealing device is provided to seal and cut the packaging material 11. The sealing device has a cutting jaw and a heat sealing jaw which are arranged so as to face each other, and a cutting rail 61 is arranged on the cutting jaw and a sealing block 62 is arranged on the heat sealing jaw. Then, a cutter (not shown) is arranged in a gap (bare) formed between the cutting rails 61.

【０００８】前記カッティングレール６１は、該カッテ
ィングレール６１に沿って延びるゴム製のドーリー６３
を有し、一方、前記シールブロック６２は前記ドーリー
６３と対向させて配設されたインダクタ６５を有する。
該インダクタ６５はドーリー６３に沿って延び、前記カ
ッティングジョーに向けて突出する凸部６６を有する。
なお、前記インダクタ６５は冷却媒体流路６７を有し、
該冷却媒体流路６７内に冷却媒体を通すことによってイ
ンダクタ６５の温度を調節することができる。The cutting rail 61 is a rubber dolly 63 extending along the cutting rail 61.
On the other hand, the seal block 62 has an inductor 65 arranged to face the dolly 63.
The inductor 65 has a convex portion 66 extending along the dolly 63 and protruding toward the cutting jaw.
The inductor 65 has a cooling medium passage 67,
The temperature of the inductor 65 can be adjusted by passing the cooling medium through the cooling medium passage 67.

【０００９】第１工程において、図２に示すように、包
材１１をシールブロック６２とカッティングレール６１
との間に置き、前記カッティングジョー及びヒートシー
ルジョーを互いに前進させる。次に、第２工程におい
て、図３に示すように、前記カッティングジョー及びヒ
ートシールジョーを更に前進させると、インダクタ６５
とドーリー６３とによって包材１１のシール部分が強く
押圧され、該シール部分が変形させられる。In the first step, as shown in FIG. 2, the packaging material 11 is attached to the seal block 62 and the cutting rail 61.
And the cutting jaws and heat sealing jaws are advanced together. Next, in the second step, as shown in FIG. 3, when the cutting jaw and the heat sealing jaw are further advanced, the inductor 65 is moved.
And the dolly 63 strongly press the seal portion of the packaging material 11 and deform the seal portion.

【００１０】そして、第３工程において、図示しない電
源装置から高周波電圧が印加され、誘導加熱によって前
記アルミニウムホイル５５を発熱させる。その結果、一
対のアルミニウムホイル５５によって挟まれた一対のポ
リエチレン樹脂５６が加熱され、図４に示すように、シ
ール部分Ｓにおいて包材１１が熱融着によって接合され
る。Then, in a third step, a high frequency voltage is applied from a power source device (not shown) to heat the aluminum foil 55 by induction heating. As a result, the pair of polyethylene resins 56 sandwiched by the pair of aluminum foils 55 are heated, and the packaging material 11 is joined by heat fusion at the seal portion S, as shown in FIG.

【００１１】[0011]

【発明が解決しようとする課題】しかしながら、前記従
来のシール装置においては、包材１１が接合される際
に、互いに対向するポリエチレン樹脂５６が溶融させら
れ、溶融した該ポリエチレン樹脂５６がシール部分Ｓの
範囲を超え、領域ＡＲ１、ＡＲ２に過度に流れ出してし
まう。However, in the above-mentioned conventional sealing device, when the packaging material 11 is joined, the polyethylene resins 56 facing each other are melted, and the melted polyethylene resin 56 is sealed by the seal portion S. Beyond the range of, and excessively flows into the areas AR1 and AR2.

【００１２】その結果、シール部分Ｓにおいて熱融着に
寄与するポリエチレン樹脂５６の量が少なくなり、適切
な接合強度が得られず、液体食品の漏れが発生すること
がある。また、前記シール部分Ｓから流れ出たポリエチ
レン樹脂５６が固化して包装容器の内側に固着し、これ
が原因になって充填及びシールより後段の成形工程にお
いて、ヒビ割れを発生させることがある。As a result, the amount of the polyethylene resin 56 that contributes to heat fusion at the seal portion S is reduced, so that proper bonding strength cannot be obtained and liquid food may leak. In addition, the polyethylene resin 56 flowing out from the seal portion S is solidified and adheres to the inside of the packaging container, which may cause cracks in the molding process subsequent to the filling and sealing.

【００１３】そこで、ポリエチレン樹脂５６が過度に流
出するのを防止するために高周波電圧を小さくすると、
ポリエチレン樹脂５６を十分に溶融させることができ
ず、適切な接合強度を得ることができない。本発明は、
前記従来のシール装置の問題点を解決して、樹脂を十分
に溶融させ、しかもその流出によって接合強度が小さく
なるのを防止することができるシール装置を提供するこ
とを目的とする。Therefore, if the high frequency voltage is reduced in order to prevent the polyethylene resin 56 from flowing out excessively,
The polyethylene resin 56 cannot be melted sufficiently and an appropriate bonding strength cannot be obtained. The present invention
It is an object of the present invention to solve the problems of the conventional sealing device and to provide a sealing device capable of sufficiently melting a resin and preventing decrease in bonding strength due to the outflow thereof.

【００１４】[0014]

【課題を解決するための手段】そのために、本発明のシ
ール装置においては、シールブロックと、該シールブロ
ックに、一部を表面に臨ませて埋設されたインダクタ
と、該インダクタと対向させて配設され、かつ、インダ
クタとの間に包材を挟持するドーリーと、前記インダク
タに高周波電圧を印加する電圧印加手段とを有する。Therefore, in the sealing device of the present invention, a seal block, an inductor embedded in the seal block with a part of the surface facing the surface, and an inductor disposed so as to face the inductor. The dolly is provided and holds a packaging material between the dolly and the inductor, and a voltage applying means for applying a high frequency voltage to the inductor.

【００１５】前記インダクタは、前記ドーリーに向けて
突出させて長手方向に形成された凸部と、該凸部の両側
において凸部と平行に形成された溝とを備える。The inductor includes a protrusion formed in the longitudinal direction so as to protrude toward the dolly, and grooves formed on both sides of the protrusion in parallel with the protrusion.

【００１６】[0016]

【作用及び発明の効果】本発明によれば、前記のように
シール装置においては、シールブロックと、該シールブ
ロックに、一部を表面に臨ませて埋設されたインダクタ
と、該インダクタと対向させて配設され、かつ、インダ
クタとの間に包材を挟持するドーリーと、前記インダク
タに高周波電圧を印加する電圧印加手段とを有する。According to the present invention, as described above, in the seal device, the seal block, the inductor which is embedded in the seal block with a part of the surface facing the surface, and the inductor which faces the inductor. And a dolly sandwiching a packaging material between the inductor and a voltage applying means for applying a high frequency voltage to the inductor.

【００１７】この場合、該電圧印加手段からの高周波電
圧がインダクタに印加されると、誘導加熱によって包材
のアルミニウムホイルが発熱する。その結果、包材に被
覆された樹脂が加熱され、シール部分において熱融着に
よって接合される。また、前記インダクタは、前記ドー
リーに向けて突出させて長手方向に形成された凸部と、
該凸部の両側において凸部と平行に形成された溝とを備
える。In this case, when the high frequency voltage from the voltage applying means is applied to the inductor, the aluminum foil of the packaging material generates heat due to induction heating. As a result, the resin coated on the packaging material is heated and bonded by heat fusion at the seal portion. In addition, the inductor, a protrusion formed in the longitudinal direction by protruding toward the dolly,
Grooves formed on both sides of the protrusion are parallel to the protrusion.

【００１８】したがって、包材の互いに対向する樹脂が
溶融させられ、凸部によって押されても、前記溝内に紙
基材及びアルミニウムホイルが膨出することによって両
包材１１の対向面に滞留部が形成され、該滞留部にポリ
エチレン樹脂５６が滞留する。その結果、樹脂の流れは
阻止され、シール部分の範囲から流れ出ない。そして、
シール部分において熱融着に寄与する樹脂の量を確保す
ることができるので、接合強度が小さくなるのを防止す
ることができる。Therefore, even if the resins facing each other of the packaging material are melted and pushed by the convex portions, the paper base material and the aluminum foil swell in the groove and stay on the opposing surfaces of both packaging materials 11. Part is formed, and the polyethylene resin 56 is retained in the retention part. As a result, the resin flow is blocked and does not flow out of the area of the seal. And
Since it is possible to secure the amount of resin that contributes to heat fusion in the sealed portion, it is possible to prevent the joint strength from decreasing.

【００１９】また、前記電圧印加手段からの高周波電圧
を高くして、接合温度を高くしたり、包材を挟持する力
を大きくしたりしても、接合強度を維持することができ
るので、シール装置のサイクルの周期を短くし、高速処
理を行うことができる。Further, even if the high-frequency voltage from the voltage applying means is increased to increase the bonding temperature or increase the force for sandwiching the packaging material, the bonding strength can be maintained, so that the seal can be obtained. The cycle of the apparatus can be shortened and high-speed processing can be performed.

【００２０】[0020]

【実施例】以下、本発明の実施例について図面を参照し
ながら詳細に説明する。図６は本発明の第１の実施例に
おける充填機の各工程を表す概略図である。図におい
て、１０は可撓性の積層体から成るウェブ状の包材であ
る。該包材１０は図示しない包材製造機によって製造さ
れ、リール２１の状態で包装機にセットされ、繰出機１
３によって繰り出されて包装機内を搬送される。前記包
材１０は、例えば、内側から順にポリエチレン樹脂、ア
ルミニウムホイル、紙基材及びポリエチレン樹脂を積層
することによって形成される。Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 6 is a schematic view showing each step of the filling machine in the first embodiment of the present invention. In the figure, 10 is a web-shaped packaging material made of a flexible laminate. The packaging material 10 is manufactured by a packaging material manufacturing machine (not shown), and is set in the packaging machine in the state of the reel 21.
3 is fed out and conveyed in the packaging machine. The packaging material 10 is formed, for example, by laminating a polyethylene resin, an aluminum foil, a paper base material, and a polyethylene resin in order from the inside.

【００２１】前記包材１０はガイド２４によって案内さ
れ、図示しないシール装置によって縦方向にシールされ
てチューブ状の包材１１になる。そして、チューブ状の
包材１１が下方に搬送される間に、液体食品は充填管１
６を介して上方から供給され、包材１１内に充填され
る。次に、該包材１１は両側から図示しないカッティン
グジョー及びヒートシールジョーに挟持され、所定の間
隔ごとに横方向にシールされ、枕状の原型容器２３が形
成される。The packaging material 10 is guided by a guide 24 and longitudinally sealed by a sealing device (not shown) to form a tubular packaging material 11. Then, while the tubular packaging material 11 is conveyed downward, the liquid food is filled with the filling pipe 1.
It is supplied from above via 6 and filled in the packaging material 11. Next, the packaging material 11 is sandwiched by cutting jaws and heat-sealing jaws (not shown) from both sides and laterally sealed at predetermined intervals to form a pillow-shaped prototype container 23.

【００２２】続いて、横方向に延びるシール部分が切断
され、各原型容器２３はあらかじめ形成された折り目に
沿って所定の形状に成形され、一定量の液体食品を収容
する複数の包装容器が完成する。次に、本発明のシール
装置について説明する。図７は本発明の第１の実施例に
おけるシール装置の説明図である。Subsequently, the laterally extending seal portion is cut, each prototype container 23 is formed into a predetermined shape along a pre-formed crease, and a plurality of packaging containers containing a fixed amount of liquid food are completed. To do. Next, the sealing device of the present invention will be described. FIG. 7 is an explanatory diagram of the sealing device according to the first embodiment of the present invention.

【００２３】この場合、シール装置の処理速度を高くす
るために、同じ構造を有するシール・切断ユニット１
４、１５を上下に二組備え、各シール・切断ユニット１
４、１５の工程を半サイクルずらして交互に動作させる
ようになっている。図において、１１はチューブ状の包
材であり、包材１０（図６）を縦方向にシールすること
によって形成される。本実施例において、前記包材１１
は上方に延びていて、内部に液体食品１２が収容され
る。In this case, in order to increase the processing speed of the sealing device, the sealing / cutting unit 1 having the same structure is used.
Each seal / cutting unit 1 is equipped with 4 sets of 4 and 15 at the top and bottom.
The steps 4 and 15 are staggered by a half cycle to operate alternately. In the figure, 11 is a tubular packaging material, which is formed by vertically sealing the packaging material 10 (FIG. 6). In this embodiment, the packaging material 11
Extends upwardly and houses the liquid food product 12 therein.

【００２４】前記包材１１は連続的に下方に搬送され、
所定の間隔ごとに二つのシール・切断ユニット１４、１
５によって挟持され、横方向にシールされて帯状のシー
ル部分Ｓが形成される。その後、該シール部分Ｓが切断
され、一定量の液体食品１２を収容する原型容器２３が
形成される。そのために、前記シール・切断ユニット１
４、１５はいずれもカッティングジョー１４ａ、１５ａ
及びヒートシールジョー１４ｂ、１５ｂを有する。The packaging material 11 is continuously conveyed downward,
Two sealing / cutting units 14, 1 at predetermined intervals
5 and is laterally sealed to form a band-shaped seal portion S. After that, the seal portion S is cut to form the prototype container 23 containing a certain amount of the liquid food 12. Therefore, the sealing / cutting unit 1
4 and 15 are both cutting jaws 14a and 15a
And heat seal jaws 14b and 15b.

【００２５】そして、前記カッティングジョー１４ａ、
１５ａの先端にはカッティングバー１８が、ヒートシー
ルジョー１４ｂ、１５ｂの先端にはシールブロック（イ
ンダクタインシュレータ）１９が配設され、前記カッテ
ィングジョー１４ａ、１５ａ及びヒートシールジョー１
４ｂ、１５ｂを前進させ、包材１１を両側から挟持して
対向面を互いに接触させ、横方向にシールする。Then, the cutting jaws 14a,
A cutting bar 18 is provided at the tip of 15a, and a seal block (inductor insulator) 19 is provided at the tips of the heat-sealing jaws 14b, 15b. The cutting jaws 14a, 15a and the heat-sealing jaw 1 are provided.
4b and 15b are advanced, the packing material 11 is pinched from both sides, the opposing surfaces are brought into contact with each other, and the lateral sealing is performed.

【００２６】また、前記カッティングジョー１４ａ、１
５ａの中央には、横方向に延びる扁平（へんぺい）なカ
ッタ２１が進退自在に配設され、該カッタ２１を前進さ
せたたときに前記シール部分Ｓの中央を切断することが
できるようになっている。そのために、前記カッタ２１
の後端にシリンダ２２が配設され、該シリンダ２２に対
して作動媒体を給排することによってカッタ２１を進退
させることができる。Further, the cutting jaws 14a, 1
At the center of 5a, a flat cutter 21 extending in the lateral direction is provided so as to be able to move forward and backward, and when the cutter 21 is advanced, the center of the seal portion S can be cut. ing. Therefore, the cutter 21
A cylinder 22 is arranged at the rear end, and the cutter 21 can be moved forward and backward by supplying and discharging the working medium to and from the cylinder 22.

【００２７】なお、２１ａ、２１ｂはそれぞれカッティ
ングジョー１４ａ、１５ａ及びヒートシールジョー１４
ｂ、１５ｂに対して揺動自在に支持され、前記包材１１
を包囲して案内する一対の成形フラップであり、チュー
ブ状の包材１１を矩形（くけい）に成形する。ところ
で、前記シール・切断ユニット１４は図においてシール
・切断開始位置にあり、該シール・切断開始位置におい
て、前記カッティングジョー１４ａ及びヒートシールジ
ョー１４ｂを前進させ、包材１１を両側から挟持して対
向面を互いに接触させる。Reference numerals 21a and 21b are cutting jaws 14a and 15a and heat sealing jaw 14, respectively.
The wrapping material 11 is swingably supported with respect to b and 15b.
Is a pair of molding flaps that surround and guide the tube-shaped packaging material 11 and is formed into a rectangular shape. By the way, the sealing / cutting unit 14 is at a sealing / cutting start position in the figure, and at the sealing / cutting start position, the cutting jaw 14a and the heat-sealing jaw 14b are advanced to sandwich the packaging material 11 from both sides to face each other. Bring the surfaces into contact with each other.

【００２８】そして、前記シール・切断ユニット１４は
包材１１を挟持したまま下方に移動し、その間に前記シ
ール部分Ｓが接合される。一方、前記シール・切断ユニ
ット１５は図においてシール・切断終了位置にあり、該
シール・切断終了位置の直前において前記シール・切断
ユニット１５の前記カッタ２１が前進し、前記シール部
分Ｓの中央を切断し、前記包材１１から原型容器２３を
分離する。Then, the sealing / cutting unit 14 moves downward while sandwiching the packaging material 11, and the sealing portion S is joined between them. On the other hand, the sealing / cutting unit 15 is at the sealing / cutting end position in the figure, and immediately before the sealing / cutting end position, the cutter 21 of the sealing / cutting unit 15 advances to cut the center of the sealing portion S. Then, the prototype container 23 is separated from the packaging material 11.

【００２９】前記シール・切断ユニット１５のカッティ
ングジョー１５ａ及びヒートシールジョー１５ｂは、前
記シール部分Ｓの中央が切断されると後退させられ、旋
回するように上昇し、前記シール・切断開始位置に移動
するようになっている。そして、前記シール・切断ユニ
ット１５がシール・切断開始位置に移動して前記カッテ
ィングジョー１５ａ及びヒートシールジョー１５ｂを前
進させ始めた時には、前記シール・切断ユニット１４の
前記カッタ２１が前進し、前記シール部分Ｓの中央を切
断し、前記包材１１から原型容器２３を分離する。The cutting jaws 15a and the heat sealing jaws 15b of the sealing / cutting unit 15 are retracted when the center of the sealing portion S is cut, and are raised so as to swivel and moved to the sealing / cutting start position. It is supposed to do. When the sealing / cutting unit 15 moves to the sealing / cutting start position and starts to advance the cutting jaws 15a and the heat sealing jaws 15b, the cutter 21 of the sealing / cutting unit 14 advances and the seal The center of the portion S is cut and the prototype container 23 is separated from the packaging material 11.

【００３０】なお、各シール・切断ユニット１４、１５
には図示しないシリンダ機構が配設され、該シリンダ機
構に作動媒体が供給されることによって、カッティング
ジョー１４ａ（又は１５ａ）及びヒートシールジョー１
４ｂ（又は１５ｂ）を互いに引寄せ、シール時の押圧力
を大きくするようにしている。また、カッティングジョ
ー１４ａ（又は１５ａ）とヒートシールジョー１４ｂ
（又は１５ｂ）との間の押圧力は、図示しない係合解除
手段によって短時間で解除される。その結果、シール・
切断ユニット１４、１５はシール・切断終了位置に至
る。Each sealing / cutting unit 14, 15
Is provided with a cylinder mechanism (not shown), and the working medium is supplied to the cylinder mechanism, whereby the cutting jaw 14a (or 15a) and the heat seal jaw 1 are provided.
4b (or 15b) are attracted to each other to increase the pressing force at the time of sealing. Further, the cutting jaw 14a (or 15a) and the heat sealing jaw 14b
The pressing force between (or 15b) is released in a short time by the engagement release means (not shown). As a result, the seal
The cutting units 14 and 15 reach the sealing / cutting end position.

【００３１】次に、シールブロック１９について説明す
る。図１は本発明の第１の実施例におけるシール装置の
シールブロックを示す図である。なお、図の（ａ）はシ
ールブロック１９の正面図、（ｂ）はシールブロック１
９の断面図である。図に示すように、シールブロック１
９には、一対のインダクタ（インダクタ本体）３１、３
２がその一部をシールブロック１９の端面に臨ませて埋
設され、かつ、図示しない接続部において互いに接続さ
れる。そして、前記インダクタ３１、３２間には、該イ
ンダクタ３１、３２に沿って延び、図示しないカッタが
前進したときにカッタの先端を収容する溝３８が形成さ
れる。Next, the seal block 19 will be described. FIG. 1 is a diagram showing a seal block of a sealing device according to a first embodiment of the present invention. 1A is a front view of the seal block 19, and FIG.
9 is a sectional view of FIG. As shown in the figure, seal block 1
9 includes a pair of inductors (inductor body) 31, 3
2 are embedded so that a part thereof faces the end surface of the seal block 19, and are connected to each other at a connection portion (not shown). A groove 38 is formed between the inductors 31 and 32 and extends along the inductors 31 and 32 to accommodate the tip of the cutter (not shown) when the cutter advances.

【００３２】また、各インダクタ３１、３２には、前記
カッティングジョー１４ａ、１５ａ（図７）に向けて突
出する凸部７１、７２が、それぞれインダクタ３１、３
２の長手方向に形成され、前記凸部７１、７２より内
側、すなわち、溝３８側には第１溝７３、７４が、凸部
７１、７２より外側には第２溝７５、７６が、それぞれ
凸部７１、７２と平行に形成される。Further, the inductors 31 and 32 are provided with protrusions 71 and 72 projecting toward the cutting jaws 14a and 15a (FIG. 7), respectively.
The first grooves 73 and 74 are formed inside the convex portions 71 and 72, that is, on the groove 38 side, and the second grooves 75 and 76 are formed outside the convex portions 71 and 72, respectively. The protrusions 71 and 72 are formed in parallel.

【００３３】ところで、前記インダクタ３１、３２は電
圧印加手段としての電源回路に接続され、該電源回路に
よって発生させられた高周波電圧が印加されるようにな
っている。そこで、前記電源回路について説明する。図
８は本発明の第１の実施例における電源回路図である。By the way, the inductors 31 and 32 are connected to a power supply circuit as a voltage applying means, and a high frequency voltage generated by the power supply circuit is applied thereto. Therefore, the power supply circuit will be described. FIG. 8 is a power supply circuit diagram in the first embodiment of the present invention.

【００３４】図において、８１は３相の交流電源であ
り、各相ごとに実効電圧が３５０〜４００〔Ｖ〕の交流
電圧を発生させる。また、８２は高圧整流回路であり、
前記交流電源８１によって発生させられた交流電圧を、
５〔ｋＶ〕程度の直流電圧に変換する。なお、高圧整流
回路８２から流れる電流は０．５〜０．６〔Ａ〕であ
る。In the figure, reference numeral 81 is a three-phase AC power supply, which generates an AC voltage having an effective voltage of 350 to 400 [V] for each phase. Further, 82 is a high-voltage rectifier circuit,
The AC voltage generated by the AC power supply 81 is
Convert to a DC voltage of about 5 [kV]. The current flowing from the high voltage rectifier circuit 82 is 0.5 to 0.6 [A].

【００３５】そして、該高圧整流回路８２によって発生
させられた直流電圧は発振回路８３、８４に印加され、
該発振回路８３、８４によって高周波電圧が発生させら
れる。そのために、前記発振回路８３、８４はパルス発
生回路９７に接続され、所定の周波数のパルスを受け
る。また、前記発振回路８３、８４はそれぞれ高周波電
圧変換回路８５、８６に接続され、該高周波電圧変換回
路８５、８６によって、周波数が１．５〜２〔ＭＨｚ〕
で、電圧が４０〜６０〔Ｖ〕の高周波電圧が発生させら
れ、それぞれインダクタユニット９８、９９に印加され
る。この場合、インダクタユニット９８、９９は、それ
ぞれシール・切断ユニット１４及びシール・切断ユニッ
ト１５に対応させて配設され、いずれも前記インダクタ
３１、３２から成る。The DC voltage generated by the high voltage rectifier circuit 82 is applied to the oscillator circuits 83 and 84,
A high frequency voltage is generated by the oscillator circuits 83 and 84. Therefore, the oscillating circuits 83 and 84 are connected to the pulse generating circuit 97 and receive a pulse having a predetermined frequency. The oscillating circuits 83 and 84 are connected to high frequency voltage converting circuits 85 and 86, respectively, and the frequency is 1.5 to 2 [MHz] by the high frequency voltage converting circuits 85 and 86.
Then, a high frequency voltage having a voltage of 40 to 60 [V] is generated and applied to the inductor units 98 and 99, respectively. In this case, the inductor units 98 and 99 are arranged so as to correspond to the sealing / cutting unit 14 and the sealing / cutting unit 15, respectively, and both are composed of the inductors 31 and 32.

【００３６】次に、該インダクタ３１、３２について説
明する。図５は本発明の第１の実施例におけるインダク
タの断面図である。なお、図において、この場合、イン
ダクタ３１を図に示しているが、インダクタ３２も同じ
構造を有する。図に示すように、インダクタ３１は前記
カッティングジョー１４ａ、１５ａ（図７）に向けて突
出する凸部７１を有する。なお、この凸部７１の形状は
図に示すような矩形のほか、蒲鉾（かまぼこ）型、台
形、半円形、円弧を有する矩形等の形状にすることがで
きる。Next, the inductors 31 and 32 will be described. FIG. 5 is a sectional view of the inductor according to the first embodiment of the present invention. Although the inductor 31 is shown in the figure in this case in the figure, the inductor 32 also has the same structure. As shown in the figure, the inductor 31 has a convex portion 71 protruding toward the cutting jaws 14a and 15a (FIG. 7). In addition to the rectangular shape shown in the figure, the shape of the convex portion 71 can be a shape such as a kamaboko shape, a trapezoidal shape, a semicircular shape, or a rectangular shape having an arc.

【００３７】そして、前記凸部７１より内側には第１溝
７３が、凸部７１より外側には第２溝７５が形成され
る。また、前記インダクタ３１は冷却媒体流路９０を有
し、該冷却媒体流路９０内に冷却媒体を通すことによっ
てインダクタ３１の温度を調節することができる。前記
インダクタ３１は、前記高周波電圧変換回路８５（図
８）によって発生させられた高周波電圧が印加される
と、インダクタ３１と図示しないアルミニウムホイルと
の間に前記高周波電圧に対応して変化する電界が形成さ
れ、領域ＡＲ３を磁束が流れる。その結果、前記アルミ
ニウムホイルにうず電流を発生させ、うず電流損によっ
てアルミニウムホイルが発熱する。A first groove 73 is formed inside the convex portion 71, and a second groove 75 is formed outside the convex portion 71. Further, the inductor 31 has a cooling medium passage 90, and the temperature of the inductor 31 can be adjusted by passing a cooling medium through the cooling medium passage 90. When the high frequency voltage generated by the high frequency voltage conversion circuit 85 (FIG. 8) is applied to the inductor 31, an electric field that changes corresponding to the high frequency voltage is generated between the inductor 31 and an aluminum foil (not shown). The magnetic flux is formed and flows through the area AR3. As a result, an eddy current is generated in the aluminum foil, and the eddy current loss causes the aluminum foil to generate heat.

【００３８】したがって、前記領域ＡＲ３に対応する部
分だけが熱融着に寄与し、領域ＡＲ３がシール部分Ｓに
なる。ところで、前記第１溝７３及び第２溝７５が形成
されているので、包材１１の互いに対向するポリエチレ
ン樹脂５６が溶融させられ、凸部７１によって押されて
も、溶融したポリエチレン樹脂５６がシール部分Ｓの範
囲を超えて過度に流れ出すことがないので、接合強度が
小さくなるのを防止することができる。したがって、前
記第１溝７３及び第２溝７５を前記領域ＡＲ３の両端に
形成するのが好ましいが、領域ＡＲ４、ＡＲ５のいずれ
の部分にも形成することができる。なお、１９はシール
ブロックである。Therefore, only the portion corresponding to the area AR3 contributes to heat fusion, and the area AR3 becomes the seal portion S. By the way, since the first groove 73 and the second groove 75 are formed, the polyethylene resin 56 facing each other of the packaging material 11 is melted, and even if the polyethylene resin 56 is pushed by the convex portion 71, the melted polyethylene resin 56 seals. Since it does not excessively flow out beyond the range of the portion S, it is possible to prevent the joint strength from decreasing. Therefore, although it is preferable to form the first groove 73 and the second groove 75 at both ends of the area AR3, they can be formed in any of the areas AR4 and AR5. In addition, 19 is a seal block.

【００３９】次に、シール装置の動作について説明す
る。図９は本発明の第１の実施例におけるシール装置の
第１工程図、図１０は本発明の第１の実施例におけるシ
ール装置の第２工程図、図１１は本発明の第１の実施例
におけるシール装置の第３工程図である。図において、
１１はチューブ状の包材、５１、５２はシール部分Ｓに
おいて互いに対向させられるウェブ状の包材である。各
包材５１、５２は、紙基材５４、該紙基材５４の内側の
表面に被覆されたアルミニウムホイル５５、及び該アル
ミニウムホイル５５の更に内側の表面に被覆されたフィ
ルム、例えば、ポリエチレン樹脂５６から成り、積層体
構造を有する。なお、前記紙基材５４の外側の表面に
も、通常、図示しないフィルム、例えば、ポリエチレン
樹脂が被覆される。この場合、各包材５１、５２のポリ
エチレン樹脂５６同士が熱融着によって接合される。Next, the operation of the sealing device will be described. 9 is a first process diagram of the sealing device according to the first embodiment of the present invention, FIG. 10 is a second process diagram of the sealing device according to the first embodiment of the present invention, and FIG. 11 is a first embodiment of the present invention. It is a 3rd process drawing of the sealing device in an example. In the figure,
Reference numeral 11 is a tube-shaped packaging material, and 51 and 52 are web-shaped packaging materials that are opposed to each other in the seal portion S. Each of the packaging materials 51 and 52 includes a paper base 54, an aluminum foil 55 coated on the inner surface of the paper base 54, and a film coated on the inner surface of the aluminum foil 55, for example, a polyethylene resin. 56, and has a laminated structure. The outer surface of the paper base 54 is usually covered with a film (not shown) such as polyethylene resin. In this case, the polyethylene resins 56 of the packaging materials 51 and 52 are joined by heat fusion.

【００４０】前記包材１１をシールし、切断するために
シール装置が配設される。該シール装置は、互いに対向
させて配設されたカッティングジョー１４ａ、１５ａ
（図７）及びヒートシールジョー１４ｂ、１５ｂを有
し、前記カッティングジョー１４ａ、１５ａにカッティ
ングレール９１が、前記ヒートシールジョー１４ｂ、１
５ｂにシールブロック１９が配設される。A sealing device is provided to seal and cut the packaging material 11. The sealing device includes cutting jaws 14a, 15a arranged to face each other.
(FIG. 7) and heat-sealing jaws 14b and 15b, and the cutting rails 91 are attached to the cutting jaws 14a and 15a.
A seal block 19 is arranged on 5b.

【００４１】前記カッティングレール９１は、該カッテ
ィングレール９１に沿って延びるゴム製のドーリー９３
を有し、一方、前記シールブロック１９は前記ドーリー
９３と対向させて配設されたインダクタ３１を有する。
第１工程において、図９に示すように、包材１１をシー
ルブロック１９とカッティングレール９１との間に置
き、前記カッティングジョー１４ａ、１５ａ及びヒート
シールジョー１４ｂ、１５ｂを互いに前進させる。The cutting rail 91 is a rubber dolly 93 extending along the cutting rail 91.
On the other hand, the seal block 19 has an inductor 31 arranged to face the dolly 93.
In the first step, as shown in FIG. 9, the packaging material 11 is placed between the seal block 19 and the cutting rail 91, and the cutting jaws 14a and 15a and the heat sealing jaws 14b and 15b are advanced to each other.

【００４２】次に、第２工程において、図１０に示すよ
うに、前記カッティングジョー１４ａ、１５ａ及びヒー
トシールジョー１４ｂ、１５ｂを更に前進させると、イ
ンダクタ３１とドーリー９３とによって包材１１のシー
ル部分Ｓが強く押圧され、該シール部分Ｓが変形させら
れる。そして、第３工程において、高周波電圧変換回路
８５（図８）からの高周波電圧がインダクタ３１に印加
され、誘導加熱によって前記アルミニウムホイル５５を
発熱させる。その結果、一対のアルミニウムホイル５５
によって挟まれた一対のポリエチレン樹脂５６が加熱さ
れ、図１１に示すように、シール部分Ｓにおいて包材１
１が熱融着によって接合される。Next, in the second step, as shown in FIG. 10, when the cutting jaws 14a, 15a and the heat sealing jaws 14b, 15b are further advanced, the sealing portion of the packaging material 11 is made by the inductor 31 and the dolly 93. The S is strongly pressed and the seal portion S is deformed. Then, in the third step, the high frequency voltage from the high frequency voltage conversion circuit 85 (FIG. 8) is applied to the inductor 31 to heat the aluminum foil 55 by induction heating. As a result, a pair of aluminum foils 55
The pair of polyethylene resins 56 sandwiched by the two are heated, and as shown in FIG.
1 are joined by heat fusion.

【００４３】このとき、互いに対向するポリエチレン樹
脂５６が溶融させられ、溶融させられた該ポリエチレン
樹脂５６が凸部７１によって押され、シール部分Ｓの範
囲を超えて流れ出ようとするが、第１溝７３及び第２溝
７５内に紙基材５４及びアルミニウムホイル５５が膨出
することによって両包材１１の対向面に滞留部が形成さ
れ、該滞留部にポリエチレン樹脂５６が滞留する。した
がって、ポリエチレン樹脂５６の流れは阻止され、シー
ル部分Ｓの範囲から流れ出ない。At this time, the polyethylene resin 56 facing each other is melted, and the melted polyethylene resin 56 is pushed by the convex portion 71 and tries to flow out beyond the range of the seal portion S, but the first groove The paper base material 54 and the aluminum foil 55 swell into the 73 and the second groove 75 to form a retention portion on the opposing surfaces of both packaging materials 11, and the polyethylene resin 56 retains in the retention portion. Therefore, the flow of the polyethylene resin 56 is blocked and does not flow out of the area of the seal portion S.

【００４４】その結果、シール部分Ｓにおいて熱融着に
寄与するポリエチレン樹脂５６の量を確保することがで
きるので、接合強度が小さくなるのを防止することがで
きる。また、前記高周波電圧変換回路８５からの高周波
電圧を高くして接合温度を高くしたり、前記シリンダ２
７に供給される作動媒体の圧力を高くして包材１１を挟
持する力を大きくしたりしても、接合強度を維持するこ
とができる。したがって、シール装置のサイクルの周期
を短くし、高速処理を行うことができる。As a result, the amount of the polyethylene resin 56 that contributes to heat fusion can be secured in the seal portion S, so that it is possible to prevent the joint strength from decreasing. Further, the high-frequency voltage from the high-frequency voltage conversion circuit 85 is increased to increase the junction temperature, and the cylinder 2
Even if the pressure of the working medium supplied to 7 is increased to increase the force for sandwiching the packaging material 11, the bonding strength can be maintained. Therefore, the cycle of the sealing device can be shortened and high-speed processing can be performed.

【００４５】次に、本発明の第２の実施例について説明
する。図１２は本発明の第２の実施例におけるインダク
タの断面図である。図において、インダクタ１３１は凸
部１７１を有し、該凸部１７１より内側には第１溝１７
３、１８１が、凸部１７１より外側には第２溝１７５、
１８２が形成される。なお、この凸部１７１の形状は図
に示すような矩形のほか、蒲鉾型、台形、半円形、円弧
を有する矩形等の形状にすることができる。Next, a second embodiment of the present invention will be described. FIG. 12 is a sectional view of the inductor according to the second embodiment of the present invention. In the figure, the inductor 131 has a convex portion 171, and the first groove 17 is provided inside the convex portion 171.
3, 181 has a second groove 175 on the outer side of the protrusion 171.
182 is formed. In addition to the rectangular shape shown in the figure, the shape of the convex portion 171 may be a semi-cylindrical shape, a trapezoidal shape, a semicircular shape, a rectangular shape having an arc, or the like.

【００４６】このように、溝の数を増加することによっ
て、両包材１１（図１１）の対向面に形成される滞留部
の数を多くすることができる。なお、本発明は前記実施
例に限定されるものではなく、本発明の趣旨に基づいて
種々変形させることが可能であり、それらを本発明の範
囲から排除するものではない。As described above, by increasing the number of grooves, it is possible to increase the number of retention portions formed on the facing surfaces of both packaging materials 11 (FIG. 11). It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be made based on the spirit of the present invention, and they are not excluded from the scope of the present invention.

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

【図１】本発明の第１の実施例におけるシール装置のシ
ールブロックを示す図である。FIG. 1 is a diagram showing a seal block of a sealing device according to a first embodiment of the present invention.

【図２】従来のシール装置の第１工程図である。FIG. 2 is a first process diagram of a conventional sealing device.

【図３】従来のシール装置の第２工程図である。FIG. 3 is a second process diagram of a conventional sealing device.

【図４】従来のシール装置の第３工程図である。FIG. 4 is a third process diagram of the conventional sealing device.

【図５】本発明の第１の実施例におけるインダクタの断
面図である。FIG. 5 is a sectional view of the inductor according to the first embodiment of the present invention.

【図６】本発明の第１の実施例における充填機の各工程
を表す概略図である。FIG. 6 is a schematic view showing each step of the filling machine in the first embodiment of the present invention.

【図７】本発明の第１の実施例におけるシール装置の説
明図である。FIG. 7 is an explanatory diagram of a sealing device according to the first embodiment of the present invention.

【図８】本発明の第１の実施例における電源回路図であ
る。FIG. 8 is a power supply circuit diagram in the first embodiment of the present invention.

【図９】本発明の第１の実施例におけるシール装置の第
１工程図である。FIG. 9 is a first process diagram of the sealing device according to the first embodiment of the present invention.

【図１０】本発明の第１の実施例におけるシール装置の
第２工程図である。FIG. 10 is a second process diagram of the sealing device according to the first embodiment of the present invention.

【図１１】本発明の第１の実施例におけるシール装置の
第３工程図である。FIG. 11 is a third process diagram of the sealing device according to the first embodiment of the present invention.

【図１２】本発明の第２の実施例におけるインダクタの
断面図である。FIG. 12 is a sectional view of an inductor according to a second embodiment of the present invention.

【符号の説明】[Explanation of symbols]

１０、１１、５１、５２ 包材 １９ シールブロック ３１、３２、１３１ インダクタ ７１、７２、１７１ 凸部 ９３ ドーリー ７３、７４、１７３、１８１ 第１溝 ７５、７６、１７５、１８２ 第２溝 10, 11, 51, 52 packaging material 19 seal block 31, 32, 131 inductor 71, 72, 171 convex portion 93 dolly 73, 74, 173, 181 first groove 75, 76, 175, 182 second groove

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 （ａ）シールブロックと、（ｂ）該シー
ルブロックに、一部を表面に臨ませて埋設されたインダ
クタと、（ｃ）該インダクタと対向させて配設され、か
つ、インダクタとの間に包材を挟持するドーリーと、
（ｄ）前記インダクタに高周波電圧を印加する電圧印加
手段とを有するとともに、（ｅ）前記インダクタは、前
記ドーリーに向けて突出させて長手方向に形成された凸
部と、該凸部の両側において凸部と平行に形成された溝
とを備えることを特徴とするシール装置。1. An (a) seal block, (b) an inductor which is embedded in the seal block with a part of the surface facing the surface, and (c) is arranged so as to face the inductor, and is an inductor. And a dolly that holds the packaging material between
(D) The inductor has a voltage applying unit for applying a high frequency voltage, and (e) the inductor has a protrusion formed in the longitudinal direction so as to protrude toward the dolly, and on both sides of the protrusion. A sealing device comprising a convex portion and a groove formed in parallel with the convex portion.
JP3574795A 1995-02-23 1995-02-23 Sealing device Expired - Fee Related JP3734847B2 (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
JP3574795A JP3734847B2 (en) 1995-02-23 1995-02-23 Sealing device

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JPH08230834A true JPH08230834A (en) 1996-09-10
JP3734847B2 JP3734847B2 (en) 2006-01-11

Family

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0979723A2 (en) * 1998-08-10 2000-02-16 Shikoku Kakoki Co., Ltd. Heat-sealing apparatus
EP1088760A2 (en) 1999-09-30 2001-04-04 Shikoku Kakoki Co., Ltd. Ultrasonic sealing apparatus
US6276114B1 (en) 1998-09-28 2001-08-21 Shikoku Kakoki Co., Ltd. High-frequency heat-sealing apparatus
EP1231149A1 (en) 2001-02-09 2002-08-14 Shikoku Kakoki Co., Ltd. High frequency heat-sealing apparatus
EP1234771A1 (en) 2001-02-27 2002-08-28 Shikoku Kakoki Co., Ltd. High frequency heat-sealing apparatus
WO2003047978A1 (en) * 2001-12-05 2003-06-12 Tetra Laval Holdings & Finance S.A. Sealing unit
JP2005162270A (en) * 2003-12-03 2005-06-23 Ishida Co Ltd Strip bag apparatus
JP2007269357A (en) * 2006-03-31 2007-10-18 Nihon Tetra Pak Kk Sealing apparatus, packaging and filling apparatus, and sealing method
JP2019514801A (en) * 2016-05-02 2019-06-06 テトラ ラバル ホールディングス アンド ファイナンス エス エイ Improved induction seal system

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6294046B1 (en) 1998-08-10 2001-09-25 Shikoku Kakoki Co., Ltd. Heat-sealing apparatus
EP0979723A3 (en) * 1998-08-10 2002-03-13 Shikoku Kakoki Co., Ltd. Heat-sealing apparatus
EP0979723A2 (en) * 1998-08-10 2000-02-16 Shikoku Kakoki Co., Ltd. Heat-sealing apparatus
US6276114B1 (en) 1998-09-28 2001-08-21 Shikoku Kakoki Co., Ltd. High-frequency heat-sealing apparatus
US7178316B2 (en) 1999-09-30 2007-02-20 Shikoku Kakoki Co., Ltd. Ultrasonic sealing apparatus
EP1088760A2 (en) 1999-09-30 2001-04-04 Shikoku Kakoki Co., Ltd. Ultrasonic sealing apparatus
EP1231149A1 (en) 2001-02-09 2002-08-14 Shikoku Kakoki Co., Ltd. High frequency heat-sealing apparatus
EP1234771A1 (en) 2001-02-27 2002-08-28 Shikoku Kakoki Co., Ltd. High frequency heat-sealing apparatus
JP2002254520A (en) * 2001-02-27 2002-09-11 Shikoku Kakoki Co Ltd High frequency heat sealing apparatus
JP4643841B2 (en) * 2001-02-27 2011-03-02 四国化工機株式会社 High frequency heat seal device
US6837025B2 (en) 2001-02-27 2005-01-04 Shikoku Kakoki Co., Ltd. High-Frequency heat-sealing apparatus
AU2002354175B2 (en) * 2001-12-05 2009-02-19 Tetra Laval Holdings & Finance Sa Sealing unit
US7389623B2 (en) 2001-12-05 2008-06-24 Tetra Laval Holdings & Finance S.A. Seal apparatus
CN100402380C (en) * 2001-12-05 2008-07-16 利乐拉瓦尔集团及财务有限公司 Sealing unit
KR101017197B1 (en) * 2001-12-05 2011-02-25 테트라 라발 홀딩스 앤드 피낭스 소시에떼아노님 Sealing unit
WO2003047978A1 (en) * 2001-12-05 2003-06-12 Tetra Laval Holdings & Finance S.A. Sealing unit
JP2005162270A (en) * 2003-12-03 2005-06-23 Ishida Co Ltd Strip bag apparatus
JP4619648B2 (en) * 2003-12-03 2011-01-26 株式会社イシダ Strip bag equipment
JP2007269357A (en) * 2006-03-31 2007-10-18 Nihon Tetra Pak Kk Sealing apparatus, packaging and filling apparatus, and sealing method
JP2019514801A (en) * 2016-05-02 2019-06-06 テトラ ラバル ホールディングス アンド ファイナンス エス エイ Improved induction seal system

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