WO1995002537A1 - Packaging container sealing apparatus - Google Patents

Packaging container sealing apparatus Download PDF

Info

Publication number
WO1995002537A1
WO1995002537A1 PCT/JP1994/001161 JP9401161W WO9502537A1 WO 1995002537 A1 WO1995002537 A1 WO 1995002537A1 JP 9401161 W JP9401161 W JP 9401161W WO 9502537 A1 WO9502537 A1 WO 9502537A1
Authority
WO
WIPO (PCT)
Prior art keywords
horn
ultrasonic vibration
packaging container
sealing
tip
Prior art date
Application number
PCT/JP1994/001161
Other languages
English (en)
French (fr)
Inventor
Per Ohlsson
Original Assignee
Tetra Laval Holdings & Finance S.A.
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 Tetra Laval Holdings & Finance S.A. filed Critical Tetra Laval Holdings & Finance S.A.
Priority to RU96102593A priority Critical patent/RU2127696C1/ru
Priority to US08/553,671 priority patent/US5642606A/en
Priority to BR9407019A priority patent/BR9407019A/pt
Priority to DE69411168T priority patent/DE69411168T2/de
Priority to AU71949/94A priority patent/AU679087B2/en
Priority to KR1019960700151A priority patent/KR100311599B1/ko
Priority to EP94921098A priority patent/EP0708022B1/en
Priority to CA002165542A priority patent/CA2165542C/en
Publication of WO1995002537A1 publication Critical patent/WO1995002537A1/ja

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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/004—Preventing sticking together, e.g. of some areas 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
    • B29C66/01—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
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • B29C66/43122—Closing the top of gable top containers
    • 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
    • B29C66/70—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
    • B29C66/7394—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 thermoset
    • 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
    • B29C66/82—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
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/22—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding
    • B65B51/225—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding by ultrasonic welding
    • 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
    • B29C66/81421—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 convex or concave
    • B29C66/81422—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 convex or concave being convex
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S53/00—Package making
    • Y10S53/02—High frequency electric sealing

Definitions

  • the present invention relates to a packaging container sealing device.
  • packaging containers having various shapes have been provided as packaging containers for storing liquid foods such as milk and soft drinks.
  • a carton blank is formed into a rectangular cylindrical carton using a filling machine, a spat is attached, and the bottom is sealed with a mandrel.
  • the bottomed carton is filled with liquid food from the top in the bottomed carton.
  • the top of the bottomed carton is folded along a predetermined fold and sealed.
  • FIG. 1 is a side view of a square ton-shaped force for forming a gable-top type packaging container
  • FIG. 2 is a side view of the packaging container
  • FIG. 3 is a perspective view of the packaging container. .
  • reference numeral 11 denotes a rectangular tubular carton formed of a packaging material
  • reference numeral 12 denotes a spat attached to a set position of the carton 11.
  • Folds a to f are formed in the square tube-shaped force 1 ton 11, and triangular panels 15, folding panels 16, inner sealing fins 17, outer sealing are formed by folding along the folds a to f. Fins 18 and sloping roof panels 19 are formed. Then, the rectangular cylindrical carton 11 is bent along folds a to f, and the sealant layers of the two inner sealing fins 17 and the sealant layer of the outer sealing fin 18 that are superposed are welded to each other. By sealing, the packaging container 13 is formed.
  • the present invention solves the problems of the conventional packaging container sealing device, and provides a packaging container sealing device in which dust is not generated from the end face of the paper base material and scattered around. With the goal. Disclosure of the invention
  • a gable-top type carton is formed by folding a rectangular cylindrical carton along a fold line and welding and sealing the sealant layers of the sealing fin portion.
  • a packaging container is formed.
  • an anvil supporting the sealing fin portion, a horn including a cylindrical portion and a converging portion, and pressing the sealing fin portion against the anvil via the tip of the horn to apply pressure, thereby sealing ultrasonic vibration.
  • the horn transmits ultrasonic vibration to the packaging material and welds and seals the sealant layers of the sealing fin portion.
  • the horn is disposed between a tip of the horn and an edge of the sealing fin portion, Ultrasonic vibration absorbing means for absorbing ultrasonic vibration is provided.
  • the sealing fin portion when the ultrasonic vibration is transmitted to the sealing fin portion, the sealing fin portion is excited to transmit the ultrasonic vibration to the upper portion, but the ultrasonic vibration is absorbed by the ultrasonic vibration absorbing means. It is not transmitted to the ⁇ part. Therefore, dust is not generated from the end face of the paper substrate exposed at the edge of the sealing fin.
  • the ultrasonic vibration absorbing means is a convex portion formed on the anvil and for sandwiching a packaging material with a tip of the horn. In this case, since the ultrasonic vibration is absorbed by the anvil via the convex portion, it is not transmitted to the ⁇ portion side.
  • the ultrasonic vibration absorbing means is a fat-side pusher disposed along the tip of the horn and pressed against the sealing fin.
  • the articulated pusher includes a tubular portion surrounding the horn and a support piece extending inward from the tubular portion to support the horn. And a tip of the support piece is brought into contact with a node of a standing wave of ultrasonic vibration transmitted to the horn. Therefore, the ultrasonic vibration transmitted to the horn is not transmitted to the art side pusher via the support piece.
  • FIG. 1 is a side view of a square ton of force for forming a gable-top type packaging container
  • Fig. 2 is a side view of the packaging container
  • Fig. 3 is a perspective view of the packaging container
  • Fig. 4 Is an operation diagram of the packaging container sealing device using ultrasonic waves
  • FIG. 5 is a schematic diagram of the packaging container sealing device showing the first embodiment of the present invention
  • FIG. 6 is an XX section of FIG.
  • Fig. 7 is a schematic view of a main part of a packaging container sealing device showing a second embodiment of the present invention
  • Fig. 8 is a main part of a packaging container sealing device showing a third embodiment of the present invention. It is a schematic diagram. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 5 is a schematic view of a sealing device for a packaging container showing a first embodiment of the present invention
  • FIG. 6 is a sectional view taken along line XX of FIG.
  • 13 is a packaging container formed of a packaging material
  • 21 is a sealing fin portion comprising an inner sealing fin 17 (see FIG. 5) and an outer sealing fin 18.
  • the packaging material is, for example, referred to as an inner surface when formed into a paper-based packaging container (hereinafter referred to as a “container inner surface”) and an outer surface when configured as a packaging container (hereinafter referred to as a “container outer surface”). ), A polyethylene layer as a sealant layer is formed.
  • Reference numeral 31 denotes an ultrasonic sealer, which is supported by the seal device main body 33 via a bracket 32.
  • the sealing device main body 33 is connected to an air cylinder (not shown) or the like, and is moved in the direction of arrow A by the cylinder.
  • the ultrasonic sealer 31 comprises a horn 35, a converter 36 and a booster 37.
  • the ultrasonic waves generated by the converter 36 are amplified by the booster 37 and the energy is concentrated on the tip 35 c of the horn 35.
  • the horn 35 is composed of a rear rectangular tubular portion 35a and a forward convergent portion 35b, and the convergent portion 35b has a flatter shape closer to the tip 35c.
  • the tip 35c extends horizontally (in the depth direction in the figure) along the outer sealing fin 18.
  • An anvil 23 is provided in front of the horn 35. The horn 3 ⁇ presses the sealing fin portion 21 against the anvil 23 at the advanced position to apply pressure, and transmits ultrasonic vibration to the sealing fin portion 21 to weld the sealant layers.
  • the ultrasonic vibration is made along the horn 35.
  • Artside pushers 40 as absorbing means are provided.
  • the articulated pusher 40 includes a flat cylindrical portion 40 a disposed along the rectangular cylindrical portion 40 a surrounding the rectangular cylindrical portion 35 a of the horn 35 and the converging portion 35 b. b, and the tip 40 c of the outside pusher 40 extends horizontally along the tip 35 c between the tip 35 c of the horn 35 and the ⁇ part 25 (in the depth direction in the figure). ).
  • the tip 40 c of the tip side pusher 40 presses the sealing fin portion 21 against the anvil 23 together with the tip 35 c of the horn 35, thereby applying pressure.
  • the sealing fin portion 21 is excited and the ultrasonic wave is Try to transmit vibration.
  • the art side pusher 40 presses the sealing fin section 21 1 against the anvil 23 to pressurize, the ultrasonic vibration is absorbed by the art side pusher 40 and the head section 2 It is not transmitted to the 5 side.
  • the position of the tip 40c of the articulate pusher 40 can be changed relative to the position of the tip 35c of the horn 35.
  • a projecting piece 43 is fixed to the art side punch 40, and an adjusting bolt 44 penetrating the projecting piece 43 is screwed into the sealing device body 33. Let me do.
  • a pair of elastic rings 46 is disposed between the rectangular cylindrical portion 35a and the rectangular cylindrical portion 40a, and the ultrasonic vibration of the horn 35 is transmitted to the art pusher 40.
  • FIG. 7 is a schematic view of a main part of a packaging container sealing device showing a second embodiment of the present invention. You.
  • 13 is a packaging container
  • 21 is a sealed fin portion
  • 35 is a horn
  • 50 is an anvil provided in front of the horn 35.
  • the horn 35 presses the sealing fin 21 against the anvil 50 at the forward position to apply pressure, and transmits ultrasonic vibration to the sealing fin 21 to weld the sealant layers together.
  • the horn 35 in the anvil 50 is prevented.
  • a long convex portion 50a as an ultrasonic vibration absorbing means is formed on the surface facing the substrate.
  • the convex portion 50a extends horizontally (in the depth direction in the drawing) between the tip 35c of the horn 35 and the ⁇ portion 25, and the horn 35 moves to the forward position, and When the sealing fin portion 21 is pressed against the anvil 50 and pressurized, the sealing fin portion 21 is held between the sealing fin portion 21 and the tip 35c.
  • the ultrasonic sealer 31 (FIG. 5) is driven and ultrasonic vibration is transmitted to the sealing fin portion 21, the sealing fin portion 21 is excited by force and the ultrasonic wave is transmitted to the opening 25 side. Try to transmit sound wave vibration. However, since the projection 50a sandwiches the sealing fin 21 between the projection 50a and the tip 35c, the ultrasonic vibration is absorbed by the anvil 50 via the projection 50a. It is not transmitted to the part 25 side.
  • FIG. 8 is a schematic diagram of a main part of a packaging container sealing device showing a third embodiment of the present invention.
  • reference numeral 35 denotes a horn
  • reference numeral 40 denotes an artificial side pusher as ultrasonic vibration absorbing means provided for the horn 35.
  • the articulated pusher 40 has a rectangular tubular portion 40a surrounding the rectangular tubular portion 35a of the horn 35. Then, a pair of elastic rings 46 are disposed between the rectangular tubular portion 35a and the rectangular tubular portion 40a, and the ultrasonic vibration of the horn 35 is transmitted to the art pusher 40. To prevent Further, a support piece 51 is fixed to the square tubular portion 40a, and an inwardly extending end of the support piece 51 is brought into contact with the square tubular portion 35a.
  • the position where the tip of the support piece 51 abuts on the rectangular tubular portion 35a is set at a node of a standing wave of ultrasonic vibration transmitted to the horn 35. Therefore, since the art side pusher 40 supports the horn 35 via the support piece 51, the bracket 32 shown in FIG. 5 can be dispensed with.
  • the present invention can be applied to a gable-top type packaging container manufacturing apparatus.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Package Closures (AREA)
  • Closing Of Containers (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Basic Packing Technique (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Cartons (AREA)

Description

明 細 書 包装容器のシール装置 技術分野
本発明は、 包装容器のシール装置に関するものである。 背景技術
従来、 牛乳、 清涼飲料等の液体食品を収容する包装容器として、 各種の形状を 有するものが提供されている。 そのうち、 頂部が屋根状になったゲーブルトップ 型の包装容器においては、 充塡 （じゅうてん） 機でカートンブランクスを角筒状 のカートンに成形し、 スパゥ トを取り付け、 その後マンドレルによってボトムを シールして有底のカートンとし、 該有底のカートン内に頂部から液体食品を充塡 するようにしている。
そして、 液体食品が充塡されると、 前記有底のカートンの頂部が所定の折り目 に沿って折り曲げられてシールされる。
第 1図はゲ一ブルトップ型の包装容器を形成するための角筒状の力一トンの側 面図、 第 2図は包装容器の側面図、 第 3図は包装容器の斜視図である。
図において、 1 1は包材で形成された角筒状のカートン、 1 2は該カートン 1 1の設定位置に取り付けられたスパゥ トである。
前記角筒状の力一トン 1 1には折り目 a〜 f が形成され、 該折り目 a〜 f に沿 つて折ることによって、 三角パネル 1 5、 折込みパネル 1 6、 内側密封フィン 1 7、 外側密封フィン 1 8及び傾斜屋根パネル 1 9が形成される。 そして、 前記角 筒状のカートン 1 1を折り目 a〜f に沿って折り曲げ、 重ね合わせられた二つの 内側密封フィン 1 7のシーラント層同士及び外側密封フィ ン 1 8のシーラント層 同士を溶着してシールすることによって、 包装容器 1 3が形成される。
本発明は、 前記従来の包装容器のシール装置の問題点を解決して、 紙基材の端 面からダストが発生して周囲に飛散することのない包装容器のシ一ル装置を提供 することを目的とする。 発明の開示
そのために、 本発明の包装容器のシール装置においては、 角筒状のカートンを 折り目に沿って折り曲げ、 密封フィ ン部のシーラント層同士を溶着してシールす ることによって、 ゲ一ブルトップ型の包装容器が形成ざれる。
そして、 前記密封フィン部を支持するアンビルと、 筒状部と収斂部とから成る ホーンと、 該ホーンの先端を介して前記密封フィ ン部をアンビルに押し当てて加 圧し、 超音波振動を密封フィ ン部に伝達する手段とを有する。 前記ホーンは包材 に超音波振動を伝達し、 密封フィ ン部のシーラント層同士を溶着してシールする また、 前記ホーンの先端と前記密封フィ ン部の縁部との間に配設され、 超音波 振動を吸収する超音波振動吸収手段を有する。
この場合、 前記密封フィ ン部は超音波振動が伝達されると励振され、 緣部側に 超音波振動を伝達しょうとするが、 該超音波振勛は超音波振動吸収手段に吸収さ れるため、 緣部側には伝達されない。 したがって、 密封フィ ン部の縁部において 露出する紙基材の端面からダストが発生することはなくなる。
本発明の他の包装容器のシール装置においては、 前記超音波振動吸収手段は、 前記アンビルに形成され、 前記ホーンの先端との間に包材を挟持する凸部である 。 この場合、 超音波振動は凸部を介してアンビルに吸収されるため、 緣部側には 伝達されない。
本発明の更に他の包装容器のシール装置においては、 前記超音波振動吸収手段 は、 前記ホーンの先端に沿って配設され、 前記密封フィ ン部に押し当てられるァ ゥ トサイ ドプッシャである。
この場合、 超音波振動はァゥ トサイ ドプッシャに吸収されるため、 縁部側には 伝達されない。
本発明の更に他の包装容器のシール装置においては、 前記ァゥ トサイ ドプッシ ャは、 前記ホーンを包囲する筒状部と、 該筒状部から内方に延びてホーンを支持 する支持片とを有し、 該支持片の先端は、 前記ホーンに伝達される超音波振動の 定常波の節部分に当接させられる。 したがって、 ホーンに伝達された超音波振動が支持片を介して前記ァゥ トサイ ドプッシャに伝達されることがない。 図面の簡単な説明
第 1図はゲーブルトップ型の包装容器を形成するための角筒状の力一トンの側 面図、 第 2図は包装容器の側面図、 第 3図は包装容器の斜視図、 第 4図は超音波 を利用した包装容器のシール装置の動作図、 第 5図は本発明の第 1の実施例を示 す包装容器のシール装置の概略図、 第 6図は図 5の X— X断面図、 第 7図は本発 明の第 2の実施例を示す包装容器のシール装置の要部概略図、 第 8図は本発明の 第 3の実施例を示す包装容器のシール装置の要部概略図である。 発明を実施するための最良の形態
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。
第 5図は本発明の第 1の実施例を示す包装容器のシール装置の概略図、 第 6図 は図 5の X— X断面図である。
図において、 1 3は包材で形成された包装容器、 2 1は内側密封フィ ン 1 7 ( 第 5図参照） 及び外側密封フィン 1 8から成る密封フィン部である。 前記包材は 、 例えば、 紙基材の包装容器としたときの内側の表面 （以下 「容器内側表面」 と いう。 ） 及び包装容器としたときの外側の表面 （以下 「容器外側表面」 という。 ) にシーラント層としてのポリエチレン層が形成されるようになっている。
また、 3 1は超音波シ一ラであり、 ブラケッ ト 3 2を介してシール装置本体 3 3に支持される。 該シール装置本体 3 3は図示しないエアシリ ンダなどと連結さ れ、 該ヱァシリ ンダによって矢印 A方向に進退させられる。
前記超音波シ一ラ 3 1はホーン 3 5、 コンバ一タ 3 6及びブースタ 3 7から成 る。 コンバータ 3 6で生成された超音波は、 ブースタ 3 7で増幅されホーン 3 5 の先端 3 5 cにそのエネルギが集中される。 前記ホーン 3 5は後方の角筒状部 3 5 a及び前方の収斂 （しゅうれん） 部 3 5 bから成り、 該収斂部 3 5 bは先端 3 5 cに近いほど扁平 （へんぺい） な形状を有し、 先端 3 5 cは前記外側密封フィ ン 1 8に沿って水平 （図における奥行方向） に延びる。 そして、 前記ホーン 3 5の前方にアンビル 2 3が配設される。 前記ホーン 3 δ は前進位置において前記密封フィン部 2 1をアンビル 2 3に押し当てて加圧し、 密封フィン部 2 1に超音波振動を伝達してシ一ラント層同士を溶着させる。 ところで、 超音波振動が前記密封フィン部 2 1に伝達される際に密封フィ ン部 2 1の緣部 2 5側が励振されるのを防止するために、 前記ホーン 3 5に沿って超 音波振動吸収手段としてのァゥ トサイ ドプッシャ 4 0が配設される。 該ァゥ トサ ィ ドプッシャ 4 0は、 前記ホーン 3 5の角筒状部 3 5 aを包囲する角筒状部 4 0 a及び収斂部 3 5 bに沿って配設された平板状部 4 0 bから成り、 アウ トサイ ド プッシャ 4 0の先端 4 0 cは、 前記ホーン 3 5の先端 3 5 cと緣部 2 5との間に おいて先端 3 5 cに沿って水平 （図における奥行方向） に延びる。
そして、 前記ァゥトサイ ドプッシャ 4 0の先端 4 0 cは、 前記ホーン 3 5の先 端 3 5 cと共に密封フィン部 2 1をアンビル 2 3に押し当てて加圧する。
したがって、 前記超音波シーラ 3 1力、'駆動されて前記密封フィン部 2 1に超音 波振動が伝達されると、 前記密封フィ ン部 2 1が励振されて緣部 2 5側に超音波 振動を伝達しょうとする。 ところカ^ 前記ァゥトサイ ドプッシャ 4 0が密封フィ ン部 2 1をアンビル 2 3に押し当てて加圧しているため、 前記超音波振動はァゥ トサイ ドプ'ンシャ 4 0に吸収され、 緣部 2 5側には伝達されない。
このようにして、 縁部 2 5側が励振されるのを防止することができ、 前記密封 フィン部 2 1の緣部 2 5において露出する紙基材の端面からダストが発生するこ とはなくなる。
前記ァゥ トサイ ドプッシャ 4 0の先端 4 0 cの位置は、 前記ホーン 3 5の先端 3 5 cの位置に対して相対的に変更することができる。 そのために、 前記ァゥ ト サイ ドプ'ンシャ 4 0に突出片 4 3が固定され、 該突出片 4 3を貫通する調整ボル ト 4 4が前記シール装置本体 3 3に螺合 （らごう） させられる。
また、 前記角筒状部 3 5 aと角筒状部 4 0 aの間に一対の弾性リング 4 6が配 設され、 前記ホーン 3 5の超音波振動がァゥ トサイ ドプッシャ 4 0に伝達される のを防止する。
次に、 本発明の第 2の実施例について説明する。
第 7図は本発明の第 2の実施例を示す包装容器のシール装置の要部概略図であ る。
図において、 1 3は包装容器、 2 1は密封フィ ン部、 3 5はホーン、 5 0は該 ホーン 3 5の前方に配設されたアンビルである。 前記ホーン 3 5は前進位置にお いて前記密封フィ ン部 2 1をアンビル 5 0に押し当てて加圧し、 密封フィン部 2 1に超音波振動を伝達してシ一ラン ト層同士を溶着させる。
そして、 超音波振動が前記密封フィ ン部 2 1に伝達される際に密封フィン部 2 1の緑部 2 5側が励振されるのを防止するために、 前記アンビル 5 0におけるホ ーン 3 5と対向する面に超音波振動吸収手段としての長尺状の凸部 5 0 aが形成 される。 該凸部 5 0 aは前記ホーン 3 5の先端 3 5 cから緣部 2 5までの間にお いて水平 （図における奥行方向） に延び、 前記ホーン 3 5が前進位置に移動して 、 前記密封フィン部 2 1をアンビル 5 0に押し当てて加圧した時に、 先端 3 5 c との間に密封フィ ン部 2 1を挟持する。
したがって、 前記超音波シーラ 3 1 (第 5図） が駆動されて前記密封フィン部 2 1に超音波振動が伝達されると、 前記密封フィン部 2 1力励振されて緣部 2 5 側に超音波振動を伝達しょうとする。 ところ力、 前記凸部 5 0 aが先端 3 5 cと の間に密封フィ ン部 2 1を挟持しているため、 前記超音波振動は凸部 5 0 aを介 してアンビル 5 0に吸収され、 緣部 2 5側には伝達されない。
このようにして、 緣部 2 5側が励振されるのを防止することができ、 前記密封 フィン部 2 1の緣部 2 5において露出する紙基材の端面からダストが発生するこ とはなくなる。
次に、 本発明の第 3の実施例について説明する。
第 8図は本発明の第 3の実施例を示す包装容器のシール装置の要部概略図であ る。
図において、 3 5はホーン、 4 0は該ホーン 3 5に ¾つて配設された超音波振 動吸収手段としてのァゥ トサイ ドプソシャである。 該ァゥ トサイ ドプッシャ 4 0 は、 前記ホーン 3 5の角筒状部 3 5 aを包囲する角筒状部 4 0 aを有する。 そし て、 前記角筒状部 3 5 aと角筒状部 4 0 aの間に一対の弾性リ ング 4 6が配設 れ、 前記ホーン 3 5の超音波振動がァゥトサイ ドプッシャ 4 0に伝達されるのを 防止する。 また、 前記角筒状部 4 0 aに支持片 5 1が固定され、 内方に延びて前記角筒状 部 3 5 aに支持片 5 1の先端が当接させられる。 該支持片 5 1 の先端が角筒状部 3 5 aに当接する位置は、 前記ホーン 3 5に伝達される超音波振動の定常波の節 部分に設定される。 したがって、 前記ァゥ トサイ ドプッシャ 4 0が前記支持片 5 1を介してホーン 3 5を支持するため、 第 5図のブラケッ ト 3 2を不要とするこ 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。 産業上の利用可能性
ゲーブルトップ型の包装容器の製造装置に適用することができる。

Claims

請 求 の 範 囲
1 . 角筒状のカートンを折り目に沿って折り曲げ、 密封フィ ン部のシーラン ト層 同士を溶着してシールすることによって、 ゲ一ブルトップ型の包装容器を形成す る包装容器のシール装置において、
( a ) 前記密封フィン部を支持するアンビルと、
( b ) 筒状部と収斂部とから成るホーンと、
( c ) 該ホーンの先端を介して前記密封フィ ン部をアンビルに押し当てて加圧し 、 超音波振動を密封フィ ン部に伝達する手段と、
( d ) 前記ホーンの先端と前記密封フィ ン部の緣部との間に配設され、 超音波振 動を吸収する超音波振動吸収手段とを有することを特徴とする包装容器のシール
2 . 前記超音波振動吸収手段は、 前記アンビルに形成され、 前記ホーンの先端と の間に包材を挟持する凸部である請求項 1に記載の包装容器のシール装置。
3 . 前記超音波振動吸収手段は、 前記ホーンの先端に沿って配設され、 前記密封 フィン部に押し当てられるァゥ トサイ ドプッシャである請求項 1に記載の包装容 器のシール装置。
4 . 前記ァゥ トサイ ドプッシャは、 前記ホーンを包囲する筒状部と、 該筒状部か ら内方に延びてホーンを支持する支持片とを有し、 該支持片の先端は、 前記ホー ンに伝達される超音波振動の定常波の節部分に当接させられる請求項 3に記載の 包装容器のシール装置。
PCT/JP1994/001161 1993-07-15 1994-07-15 Packaging container sealing apparatus WO1995002537A1 (en)

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RU96102593A RU2127696C1 (ru) 1993-07-15 1994-07-15 Запечатывающее устройство для упаковочных контейнеров
US08/553,671 US5642606A (en) 1993-07-15 1994-07-15 Sealing apparatus for packaging containers
BR9407019A BR9407019A (pt) 1993-07-15 1994-07-15 Aparelho vedador para embalagens
DE69411168T DE69411168T2 (de) 1993-07-15 1994-07-15 Vorrichtung zum verschliessen von verpackungsbehältern
AU71949/94A AU679087B2 (en) 1993-07-15 1994-07-15 Packaging container sealing apparatus
KR1019960700151A KR100311599B1 (ko) 1993-07-15 1994-07-15 포장용기의밀봉장치
EP94921098A EP0708022B1 (en) 1993-07-15 1994-07-15 Packaging container sealing apparatus
CA002165542A CA2165542C (en) 1993-07-15 1994-07-15 Sealing apparatus for packaging containers

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EP0728570A1 (de) * 1995-02-16 1996-08-28 International Packaging Systems Gmbh Ultraschall-Siegelung
WO2009068227A1 (de) * 2007-11-26 2009-06-04 Minitüb Abfüll- und Labortechnik GmbH & Co. KG Vorrichtung zum verschliessen von kunststoffbehältern

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DE69411168T2 (de) 1998-10-22
EP0708022A1 (en) 1996-04-24
EP0708022A4 (en) 1997-05-02
JP3483593B2 (ja) 2004-01-06
KR960703764A (ko) 1996-08-31
RU2127696C1 (ru) 1999-03-20
AU679087B2 (en) 1997-06-19
BR9407019A (pt) 1996-09-10
US5642606A (en) 1997-07-01
AU7194994A (en) 1995-02-13
KR100311599B1 (ko) 2002-02-28
MX9405379A (es) 1995-01-31
CA2165542A1 (en) 1995-01-26
TW252960B (ja) 1995-08-01
ZA945036B (en) 1996-01-12
EP0708022B1 (en) 1998-06-17
ATE167443T1 (de) 1998-07-15
JPH0733121A (ja) 1995-02-03
DE69411168D1 (de) 1998-07-23
CA2165542C (en) 2003-04-08

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