WO2021220592A1 - ヒートシール装置 - Google Patents

ヒートシール装置 Download PDF

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Publication number
WO2021220592A1
WO2021220592A1 PCT/JP2021/006318 JP2021006318W WO2021220592A1 WO 2021220592 A1 WO2021220592 A1 WO 2021220592A1 JP 2021006318 W JP2021006318 W JP 2021006318W WO 2021220592 A1 WO2021220592 A1 WO 2021220592A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat
heat seal
time
heat sealing
webs
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.)
Ceased
Application number
PCT/JP2021/006318
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
幹夫 戸谷
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.)
Totani Corp
Original Assignee
Totani Corp
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 Totani Corp filed Critical Totani Corp
Priority to US17/920,930 priority Critical patent/US12275195B2/en
Priority to JP2021556861A priority patent/JP7144017B2/ja
Priority to CN202180021553.3A priority patent/CN115279660B/zh
Priority to EP21794457.8A priority patent/EP4144656B1/en
Publication of WO2021220592A1 publication Critical patent/WO2021220592A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
    • B31B70/642—Uniting opposed surfaces or edges; Taping by applying heat or pressure using sealing jaws or sealing dies
    • 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
    • B29C66/816—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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161—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 mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/305—Electrical means involving the use of cartridge heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7888—Means for handling of moving sheets or webs
    • B29C65/7891—Means for handling of moving sheets or webs of discontinuously moving sheets or webs
    • 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
    • B29C66/40—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
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8225—Crank mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/843—Machines for making separate joints at the same time in different planes; Machines for making separate joints at the same time mounted in parallel or in series
    • B29C66/8432—Machines for making separate joints at the same time mounted in parallel or in series
    • 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
    • B29C66/851—Bag or container making machines
    • B29C66/8511—Bag making machines
    • 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
    • B29C66/87—Auxiliary operations or devices
    • B29C66/874—Safety measures or devices
    • B29C66/8748—Safety measures or devices involving the use of warnings
    • 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
    • B29C66/929—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges
    • B29C66/9292—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges in explicit relation to another variable, e.g. pressure diagrams
    • B29C66/92921—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges in explicit relation to another variable, e.g. pressure diagrams in specific relation to time, e.g. pressure-time diagrams
    • 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
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/932—Measuring or controlling the joining process by measuring or controlling the speed by measuring the speed
    • B29C66/9321—Measuring or controlling the joining process by measuring or controlling the speed by measuring the speed with special speed measurement means or methods
    • 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
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/939—Measuring or controlling the joining process by measuring or controlling the speed characterised by specific speed values or ranges
    • B29C66/9392—Measuring or controlling the joining process by measuring or controlling the speed characterised by specific speed values or ranges in explicit relation to another variable, e.g. speed diagrams
    • 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
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B29C66/942—Measuring or controlling the joining process by measuring or controlling the time by measuring the time
    • B29C66/9421—Measuring or controlling the joining process by measuring or controlling the time by measuring the time with special time measurement means or methods
    • 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
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B29C66/944—Measuring or controlling the joining process by measuring or controlling the time by controlling or regulating the time
    • B29C66/9441—Measuring or controlling the joining process by measuring or controlling the time by controlling or regulating the time the time being controlled or regulated as a function of another parameter
    • 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
    • B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/006—Controlling; Regulating; Measuring; Safety measures
    • 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
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • 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
    • B65B57/00—Automatic control, checking, warning, or safety devices
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7128—Bags, sacks, sachets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/002—Flexible containers made from webs by joining superimposed webs, e.g. with separate bottom webs
    • 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
    • B65B57/00—Automatic control, checking, warning, or safety devices
    • B65B57/02—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of binding or wrapping material, containers, or packages

Definitions

  • This application relates to a heat sealing device for a bag making machine.
  • a bag making machine is provided with a transport device in which two or more continuous body materials (webs) are superposed on each other and intermittently conveyed in the length direction thereof.
  • the bag making machine further includes at least one heat-sealing device that heat-seals the body material each time the body material is intermittently conveyed.
  • the bag making machine further includes a cross-cut device downstream of the heat-sealing device that cross-cuts the body material in the width direction each time the body material is intermittently conveyed. Every time the body material is cross-cut, a bag such as a plastic bag is manufactured.
  • the heat-sealing device generally includes a first heat-sealing member and a second heat-sealing member facing each other. At least one of the first and second heat seal members is heated by the heater.
  • the heat seal device further includes a drive mechanism for moving the first heat seal member closer to and further from the second heat seal member.
  • the first heat seal member is brought close to the second heat seal member, and the body material is sandwiched between both heat seal members. Thereby, the body material is heat-sealed. Then, the drive mechanism separates the first heat-sealing member from the second heat-sealing member to release the pinching of the body member.
  • the sealing time that is, the holding time in which the body material is sandwiched by the heat-sealing member.
  • the pinch time should be adjusted and managed appropriately.
  • the user In the heat sealing device, the user generally visually observes the heat sealing operation to check the holding time, and then operates the components of the drive mechanism to adjust the holding time.
  • visual confirmation may be inaccurate and may lead to misalignment.
  • the quality of the heat seal can vary.
  • An object of the present application is to provide a heat sealing device having a configuration for accurately detecting the holding time when the web is sandwiched by the heat sealing member.
  • a heat sealing device for a bag making machine is provided.
  • a sensor provided for detecting the acceleration of the first heat seal member and The web is provided with a measuring unit that measures the sandwiching time during which the web is sandwiched between the first and second heat-sealing members based on the data from the sensor.
  • the measuring unit may calculate the time from the first peak of the acceleration to the second peak of the acceleration as the holding time.
  • the first peak is caused by the start of sandwiching the web by the first and second heat-sealing members
  • the second peak is the second peak of the web by the first and second heat-sealing members. It is caused by the release of the pinch.
  • the heat sealing device further A determination unit that determines whether or not the pinching time meets a predetermined condition, and A warning device that outputs a warning when the determination unit determines that the holding time corresponds to the predetermined condition may be further provided.
  • the predetermined condition may include that the holding time is out of the predetermined range.
  • the predetermined condition may include that the pinching time is larger or smaller than the predetermined threshold value.
  • the drive mechanism may include a support member for supporting the first heat seal member.
  • the sensor may be attached to the support member.
  • the drive mechanism is a charge spring provided so as to urge the first heat seal member toward the second heat seal member while the web is sandwiched between the first and second heat seal members. May include.
  • FIG. 1 schematically and partially shows an exemplary heat sealing device.
  • FIG. 2 describes the operation of the heat sealing device.
  • FIG. 3 describes the operation of the heat sealing device.
  • FIG. 4 shows the profile of the heat seal operation in relation to the transport state of the web.
  • 5A is a schematic plan view of an exemplary bag making machine
  • FIG. 5B is a side view of FIG. 5A
  • FIG. 5C is a schematic view within region T of FIG. 5A.
  • the heat sealing device is incorporated in a bag making machine, for example, in the illustrated bag making machines of FIGS. 5A and 5B.
  • FIG. 1 schematically shows a main part of the illustrated heat sealing device 1.
  • the heat seal device 1 includes a first seal unit 2, a second seal unit 3, a drive mechanism 4, and a retracting mechanism 5.
  • At least two webs 60 and 61 are superposed on each other by a transport device of a bag making machine (for example, the transport device 7 in FIG. 5B), and are intermittently transported in the length direction thereof.
  • the first and second seal units 2 and 3 face each other with the webs 60 and 61 in between.
  • the webs 60 and 61 are fed horizontally, and the facing directions of the seal units 2 and 3 are in the vertical direction.
  • the first seal unit 2 is located above the webs 60 and 61, and the second seal unit 3 is located below the webs 60 and 61.
  • the first seal unit 2 includes a first heat seal member 20 and a first heater 21 for heating the first heat seal member 20.
  • the second seal unit 3 includes a second heat seal member 30 and a second heater 31 for heating the second heat seal member 30.
  • the first and second heat-sealing members 20 and 30 are used for heat-sealing by sandwiching at least two or more webs 60 and 61, as will be described later.
  • the first and second heat seal members 20 and 30 are attached to the first and second heaters 21 and 31, respectively, so as to face each other in the vertical direction with the webs 60 and 61 in between.
  • the first and second heaters 21 and 31 each have a heater cartridge inside. When power is supplied to the heater cartridge, the heater cartridge generates heat. The heat is transferred to the heat seal members 20 and 30.
  • the drive mechanism 4 brings the first heat seal member 20 closer to and further from the second heat seal member 30 in order to release the webs 60 and 61 between the first and second heat seal members 20 and 30. It is configured as follows.
  • the drive mechanism 4 of the embodiment brings the entire first seal unit 2 closer to and further from the second seal unit 3.
  • the drive mechanism 4 may include, for example, a support member 40, a pole 41, an adjusting nut 42, a charge spring 43, and a pole operating mechanism 44.
  • the support member 40 is configured as an upper beam and supports the first seal unit 2 and therefore the first heat seal member 20.
  • the pole 41 extends in the opposite direction of the seal units 2 and 3 (first and second heat seal members 20, 30), that is, in the vertical direction.
  • the pole 41 is inserted into the through hole 400 of the support member 40.
  • the pole 41 has a flange-shaped stopper 410 on its outer circumference.
  • the stopper 410 is located on one side (lower side) of the through hole 400.
  • the stopper 410 is configured so that its position can be adjusted in the vertical direction with respect to the pole 41.
  • a known double nut may be used as the stopper 410. That is, the two nuts are fitted on the outer peripheral surface on which the screws of the pole 41 are formed.
  • a bolt portion 411 having a screw formed on the outer peripheral surface is provided on the other side (upper side) of the pole 41 with respect to the through hole 400.
  • the adjustment nut 42 is fitted to the bolt portion 411 of the pole 41 and is screw-engaged. Therefore, by operating (turning) the adjusting nut 42, it can be moved along the bolt portion 411 with respect to the bolt portion 411.
  • the charge spring 43 urges the first heat seal member 20 toward the second heat seal member 30 when the webs 60 and 61 are sandwiched between the first and second heat seal members 20 and 30. It is provided to do.
  • the charge spring 43 is arranged between the support member 40 and the adjusting nut 42 so as to extend between the support member 40 and the adjusting nut 42, and urges the support member 40 toward the stopper 410.
  • the pole 41 (bolt portion 411) is inserted through the charge spring 43. The urging force of the charge spring 43 can be adjusted by operating the adjusting nut 42.
  • the pole operating mechanism 44 is operably connected to the pole 41 at the lower end of the pole 41, and is configured to move the pole 41 in the opposite direction of the seal units 2 and 3, that is, in the vertical direction.
  • the pole operating mechanism 44 of the embodiment is configured to move the pole 41 in conjunction with the intermittent transfer of the webs 60 and 61 by the transfer device of the bag making machine (for example, the transfer device 7 of FIG. 5B).
  • the transfer device of the bag making machine for example, the transfer device 7 of FIG. 5B.
  • a well-known configuration disclosed in Patent Documents 1 and 2 may be adopted.
  • FIG. 1 shows the heat sealing device 1 only on one end side of the support member 40, the pole 41 and related components are located at both ends of the support member 40.
  • the retracting mechanism 5 may include, for example, a support member 50, an arm 51, and a cylinder 52.
  • the support member 50 is configured as a lower beam and supports the second (lower) seal unit 3 and thus the second heat seal member 30.
  • An elongated hole 500 is formed in the support member 50 and extends horizontally.
  • the arm 51 is rotatably supported by a frame (not shown) around a rotation shaft 510 located at the center thereof.
  • the arm 51 includes a slider 511 at its first end.
  • the slider 511 is slidably located in the slot 500 along the slot 500.
  • the cylinder 52 includes a tube 520 and a rod 521.
  • the tube 520 is attached to a frame (not shown).
  • the tip of the rod 521 is attached to the second end 512 of the arm 51.
  • the retracting mechanism 5 can move the second seal unit 3 in the vertical direction by operating the cylinder 52.
  • the retracting mechanism 5 extends the rod 521 to rotate the arm 51 around the rotation shaft 510, thereby moving the support member 50 and the second seal unit 3 upward, that is, the second heat seal.
  • the member 30 can be positioned at the transport height 62 (see FIG. 2).
  • the retracting mechanism 5 can move the support member 50 and the second seal unit 3 downward by contracting the rod 521, that is, retract the second heat seal member 30 from the transport height 62. can.
  • the drive mechanism 4 and the retract mechanism 5 are merely examples. Various configurations may be adopted.
  • FIG. 1 shows a heat sealing device 1 in a standby state.
  • the first and second seal units 2 and 3 are retracted from the webs 60 and 61 (and thus the transport height 62) by the drive mechanism 4 and the retract mechanism 5, respectively.
  • the heat sealing device 1 heat-seals the webs 60 and 61 as follows while the intermittent transportation of the webs 60 and 61 is stopped.
  • the retracting mechanism 5 moves the second seal unit 3 upward toward the webs 60 and 61 to position the second heat seal member 30 at the transport height 62.
  • the drive mechanism 4 moves the pole 41 downward to move the support member 40 and the first seal unit 2 downward toward the webs 60 and 61, whereby the first heat seal member 20 is also conveyed. Position it at 62.
  • the webs 60 and 61 are sandwiched and heated by the first and second heat seal members 20 and 30 (heated by the first and second heaters 21 and 31, respectively).
  • the drive mechanism 4 keeps moving the pole 41 downward. Since the first heat seal member 20 already sandwiches the webs 60 and 61 together with the second heat seal member 30, the first seal unit 2 and the support member 40 do not move further downward. Therefore, as shown in FIGS. 2 and 3, only the pole 41 moves downward while compressing the charge spring 43.
  • the compressed charge spring 43 urges the first heat seal member 20 toward the second heat seal member 30 via the support member 40. That is, the urging pressure of the charge spring 43 is applied to the webs 60 and 61. Thereby, the webs 60 and 61 are pressurized. The webs 60 and 61 are heat-sealed by heating and pressurizing.
  • the drive mechanism 4 moves the pole 41 upward to separate the first heat seal member 20 from the webs 60 and 61.
  • the sandwiching of the webs 60 and 61 by the heat seal members 20 and 30 is released. That is, the heat seal is completed.
  • the retracting mechanism 5 continues to maintain the position shown in FIG. 2 while the series of operation operations continues, the first heat seal member 20 repeats vertical movement in conjunction with the intermittent transfer of the webs 60 and 61.
  • the retracting mechanism 5 separates the second heat sealing member 30 from the webs 60 and 61, and the heat sealing device 1 returns to the standby state shown in FIG.
  • the transportation of the webs 60 and 61 is restarted, and the above operation is repeated.
  • the time during which the webs 60 and 61 are sandwiched between the first and second heat seal members 20 and 30 (hereinafter referred to as the sandwiching time), that is, the heat seal time is when the webs 60 and 61 are pressurized as shown in FIG. It can be confirmed by visually observing the gap 45 formed between the stopper 410 and the support member 40. As will be described later, if the gap 45 is large when the pole 41 is lowered to the lowermost end, the heat seal time is long, and if the gap 45 is small, the heat seal time is short.
  • the heat sealing device 1 of the embodiment provides a configuration for accurately detecting the holding time without visually observing as follows.
  • the heat seal device 1 further includes a sensor 10, a measurement unit 11, a determination unit 12, and a warning device 13.
  • the sensor 10 is provided to detect the acceleration of the first heat seal member 20.
  • the sensor 10 is an accelerometer and outputs a detection signal indicating acceleration to the measuring unit 11.
  • the sensor 10 is attached to the support member 40, and specifically, the sensor 10 is attached. Since the support member 40 and the first heat seal member 20 move integrally, the sensor 10 detects the acceleration of the first heat seal member 20. Therefore, the data from the sensor 10 (consisting of the detection signals) indicates the change over time in the acceleration of the heat seal member 20.
  • the measuring unit 11 is configured to measure the holding time based on the data from the sensor 10. The measurement principle will be described below.
  • FIG. 4 shows the time change of the height (h), the velocity (v), and the acceleration (a) of the first heat-sealing member 20 in the heat-sealing operation.
  • the horizontal axis represents time (t).
  • FIG. 4 shows the heat sealing operation and the transport state of the webs 60 and 61 in relation to each other.
  • the height (h) is based on the transport height 62.
  • Velocity (v) and acceleration (a) are positive upwards.
  • the drive mechanism 4 changes the height (h) with a substantially sine curve.
  • the movement of the pole 41 is reversed from the bottom to the top, and the gap 45 becomes smaller.
  • the application of the urging pressure ends.
  • the support member 40 and the first seal unit 2 start to move upward integrally with the pole 41, and the first heat seal member 20 starts to separate from the webs 60 and 61.
  • the velocity (v) increases instantly. Therefore, the second peak of the acceleration (a) is generated by the release of the holding of the webs 60 and 61 by the first and second heat seal members 20 and 30, that is, the end of the heat seal.
  • the time (t2) for the first heat seal member 20 to separate from the transport height 62 is faster, and if it is lower, the time is longer. (T2) is slower. That is, when the stopper 410 is raised with respect to the pole 41, the heat seal time (t2-t1) becomes shorter, and when the stopper 410 is lowered, the heat seal time (t2-t1) becomes longer.
  • the first and second peaks are detected by the sensor 10. Then, the measuring unit 11 analyzes the data received from the sensor 10 and calculates the time from the detected first peak to the detected second peak as the sandwiching time. In this way, the sensor 10 and the measuring unit 11 can accurately measure the holding time (that is, the heat seal time).
  • the determination unit 12 is configured to determine whether or not the measured holding time meets a predetermined requirement.
  • predetermined requirements may include that the pinch time is outside the predetermined range, the pinch time is less than the first threshold, or the pinch time is greater than the second threshold.
  • the determination unit 12 can determine that the holding time (heat seal time) is longer or shorter than the desired time.
  • the pinch time may be an average value of the pinch times measured over a plurality of heat seal operations.
  • the functional unit (measurement unit 11 and determination unit 12) may be realized, for example, by the processor executing a program stored in the storage medium.
  • the warning device 13 is configured to output a warning when the holding time meets a predetermined requirement. For example, a pinch time that is too short can be considered as the application of insufficient urging pressure to the webs 60, 61. Therefore, the warning device 13 may output a warning when it is determined that the holding time is smaller than the lower limit of the predetermined range or the first threshold value. On the other hand, if the holding time is too long, it can be regarded as the application of excessive urging pressure to the webs 60 and 61. Therefore, the warning device 13 may output a warning when the holding time is larger than the upper limit of the predetermined range or the second threshold value.
  • the warning device 13 may include a visual device such as an LED, a lamp, and a display, and / or an auditory device such as a speaker. Therefore, the output of the warning may be performed by the emission of light and / or the generation of sound.
  • the warning device 13 may include an emergency stop device for stopping the heat seal device 1 or the bag making machine including the heat seal device 1. If the pinching time is too long, the webs 60, 61 can be transported by the transfer device of the bag making machine while being sandwiched by the first and second heat seal members 20, 30. This can result in poor transport. Therefore, the output of the warning may be performed by an emergency stop of the heat seal device 1 or the bag making machine including the heat seal device 1.
  • the heat seal device 1 may further include a display that displays the measured holding time.
  • the display may display the measured pinch time and the design value of the pinch time together.
  • the holding time and therefore the heat sealing time, is accurately measured, so that the user can appropriately adjust and manage this.
  • the user can adjust the holding time (heat sealing time) when the holding time is not preferable for heat sealing or bag making.
  • the holding time can be adjusted by adjusting the position of the stopper 410 with respect to the pole 41 up and down. Specifically, if the stopper 410 is adjusted upward with respect to the pole 41, the pinching time can be shortened, and if it is adjusted downward, the pinching time can be lengthened. In this way, the improper adjustment can be corrected immediately, and the quality of the heat seal can be stabilized without variation.
  • the sensor 10 of the embodiment is located in the vicinity of one of the poles 41 at both ends of the support member 40, but at an arbitrary position on the support member 40, for example, at the center of the support member 40. It may be attached.
  • the first peak is obtained between the position near one pole 41 and the position near the other pole 41.
  • the second peak is detected by the sensor 10. Therefore, one sensor 10 is attached to one end of the support member 40 and is located near one pole 41, and another sensor 10 is attached to the other end of the support member 40 and is near the other pole 41. It may be located in. Then, the user can eliminate the difference in the peak detection time at the positions in the vicinity of both poles 41 by adjusting the positions of both stoppers 410 with reference to the data of these two sensors 10. This provides an equal heat seal time over the longitudinal direction of the heat seal member 20/30, thus providing a high quality heat seal.
  • the heat seal device 1 further includes a filter circuit (not shown) that removes the natural frequency of the mechanical element, and by passing the detection signal of the sensor 10 through the filter circuit, the first peak and the second peak The detection signal of may be made more prominent.
  • the first and second heat seal members 20 and 30 are heated by the first and second heaters 21 and 31, respectively, during the heat seal operation.
  • the heat seal device 1 may put one of the built-in heater cartridges in a non-heated state during the heat seal operation.
  • the heat seal device 1 may include only one of the heaters 21 and 31. Whether one or both of the heat seal members 20 and 30 is heated is determined by the properties of the webs 60 and 61 and the type of bag to be manufactured.
  • the bag making machine includes a transport device 7 (FIG. 5B) that intermittently conveys the webs 60 and 61 as body materials in the length direction thereof.
  • Code X 1 indicates a conveying direction of the web 60, 61.
  • the transport device 7 may include, for example, a roller 70 for guiding the webs 60 and 61 and superimposing them on each other, and a transport roller pair 71 driven for intermittently transporting the webs 60 and 61.
  • one large web is continuously fed out from the original fabric 6, slit, and divided into webs 60 and 61.
  • the dancer device 8 appropriately converts the transport of the webs 60 and 61 from continuous transport to intermittent transport.
  • the webs 60 and 61 may be, for example, a plastic film.
  • the webs 60, 61 may consist of a paper base and a film or resin material partially or wholly laminated to the base.
  • the bag making machine further includes a vertical heat sealing device 1a as an example of the heat sealing device 1.
  • the vertical heat-sealing device 1a is arranged downstream of the dancer device 8 and is configured to heat-seal the webs 60 and 61 in the length direction thereof during the stoppage of intermittent transportation of the webs 60 and 61. ..
  • the vertical heat-sealing device 1a is configured to heat-seal the webs 60 and 61 each time intermittently conveyed.
  • the vertical heat sealing device 1a of the embodiment includes two pairs of the first and second sealing units 2 and 3 in order to heat seal the webs 60 and 61 on both sides thereof.
  • FIG. 5C is an enlarged description of the region T of FIG. 5A.
  • the two support members 40 extend in the width direction of the webs 60 and 61, respectively, and movably support the two first seal units 2 in the width directions of the webs 60 and 61.
  • the second seal unit 3 is also supported by the support member 50 (not shown in FIGS. 5A-5C) so as to be movable in the width direction of the webs 60 and 61.
  • Pole 41 and related components are provided at both ends of the two support members 40.
  • the two support members 40 and the support member 50 are provided so as to be movable in the length direction of the webs 60 and 61 by a known configuration.
  • the bag making machine further includes a horizontal heat sealing device 1b as an example of the heat sealing device 1.
  • the horizontal heat-sealing device 1b is arranged downstream of the vertical heat-sealing device 1a and is configured to heat-seal the webs 60 and 61 in the width direction during the stoppage of intermittent transportation of the webs 60 and 61.
  • the lateral heat-sealing device 1b is configured to heat-seal the webs 60 and 61 each time intermittently conveyed.
  • the lateral heat sealing device 1b of the embodiment includes a plurality of pairs of the first and second sealing units 2 and 3.
  • the number and arrangement of pairs of the first and second sealing units 2 and 3 of the heat sealing devices 1a and 1b are appropriately determined according to the structure of the one-row bag making, the two-row bag making and the bag.
  • the bag making machine is further equipped with a cross-cut device 9.
  • the cross-cut device 9 is configured to cross-cut the webs 60 and 61 in the width direction each time the webs 60 and 61 are intermittently conveyed. A bag is manufactured for each crosscut.
  • the above bag making machine is just an example.
  • the heat sealing device 1 (1a, 1b) may be incorporated in various bag making machines.
  • the heat seal device 1 may be incorporated into a bag making machine that manufactures a bag containing additional components such as side gussets, bottom gussets, etc., in addition to the webs 60, 61 as body material.
  • additional components may optionally be heat-sealed.
  • the heat seal device 1 makes it possible to adjust the heat seal time, which is one of the factors that greatly affect the heat seal quality, with high accuracy, and suppresses the variation in the heat seal quality. Therefore, the bag making machine including the heat sealing device 1 can suppress the production loss by the high quality heat sealing.
  • Heat seal device 1a Vertical heat seal device 1b Horizontal heat seal device 10 Sensor 11 Measuring unit 12 Judgment unit 13 Warning device 2 1st seal unit 20 1st heat seal member 21 1st heater 3 2nd seal unit 30 2nd heat seal Member 31 Second heater 4 Drive mechanism 40 Support member 43 Charge spring 60, 61 Web

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Package Closures (AREA)
  • Making Paper Articles (AREA)
PCT/JP2021/006318 2020-05-01 2021-02-19 ヒートシール装置 Ceased WO2021220592A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US17/920,930 US12275195B2 (en) 2020-05-01 2021-02-19 Heat seal device
JP2021556861A JP7144017B2 (ja) 2020-05-01 2021-02-19 ヒートシール装置
CN202180021553.3A CN115279660B (zh) 2020-05-01 2021-02-19 热封装置
EP21794457.8A EP4144656B1 (en) 2020-05-01 2021-02-19 Heat sealing device

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JP2020-081395 2020-05-01
JP2020081395 2020-05-01

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EP (1) EP4144656B1 (https=)
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CN219728735U (zh) * 2023-04-17 2023-09-22 台湾海川智能机器有限公司 缓冲机构、热封装置及薄膜包装机

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CN115279660B (zh) 2024-02-02
EP4144656B1 (en) 2025-12-10
CN115279660A (zh) 2022-11-01
EP4144656A1 (en) 2023-03-08
EP4144656A4 (en) 2024-02-28
US20230158755A1 (en) 2023-05-25
US12275195B2 (en) 2025-04-15
JP7144017B2 (ja) 2022-09-29
JPWO2021220592A1 (https=) 2021-11-04

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