US20120110956A1 - Method and chamber machine for sealing packaging material - Google Patents

Method and chamber machine for sealing packaging material Download PDF

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Publication number
US20120110956A1
US20120110956A1 US13/271,747 US201113271747A US2012110956A1 US 20120110956 A1 US20120110956 A1 US 20120110956A1 US 201113271747 A US201113271747 A US 201113271747A US 2012110956 A1 US2012110956 A1 US 2012110956A1
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US
United States
Prior art keywords
sealing
temperature
packaging material
chamber
sealing bar
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.)
Abandoned
Application number
US13/271,747
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English (en)
Inventor
Dietmar Miller
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.)
Multivac Sepp Haggenmueller GmbH and Co KG
Original Assignee
Multivac Sepp Haggenmueller GmbH and Co KG
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 Multivac Sepp Haggenmueller GmbH and Co KG filed Critical Multivac Sepp Haggenmueller GmbH and Co KG
Assigned to MULTIVAC SEPP HAGGENMUELLER GMBH & CO. KG reassignment MULTIVAC SEPP HAGGENMUELLER GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MILLER, DIETMAR
Publication of US20120110956A1 publication Critical patent/US20120110956A1/en
Abandoned legal-status Critical Current

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    • 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
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91441—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time
    • B29C66/91443—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time following a temperature-time profile
    • B29C66/91445—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time following a temperature-time profile by steps
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B29C66/0242—Heating, or preheating, e.g. drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/03—After-treatments in the joint area
    • B29C66/034—Thermal after-treatments
    • B29C66/0342—Cooling, e.g. transporting through welding and cooling zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/349—Cooling the welding zone on the welding spot
    • B29C66/3494—Cooling the welding zone on the welding spot while keeping the welding zone under pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7373—Joining soiled or oxidised materials
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—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
    • 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
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91421—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91951—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to time, e.g. temperature-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
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9241—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power
    • B29C66/92441—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power the pressure, the force or the mechanical power being non-constant over time
    • B29C66/92443—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power the pressure, the force or the mechanical power being non-constant over time following a pressure-time profile
    • B29C66/92445—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power the pressure, the force or the mechanical power being non-constant over time following a pressure-time profile by steps
    • 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
    • B29C66/94—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
    • 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
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/967—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving special data inputs or special data outputs, e.g. for monitoring purposes
    • B29C66/9672—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving special data inputs or special data outputs, e.g. for monitoring purposes involving special data inputs, e.g. involving barcodes, RFID tags
    • 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
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
    • B65B31/024—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for wrappers or bags
    • 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
    • B65B51/146—Closing bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—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
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/80—General aspects of machine operations or constructions and parts thereof
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    • 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
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • 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
    • B65B51/32—Cooling, or cooling and pressing, package closures after heat-sealing
    • 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
    • B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
    • B65B55/24—Cleaning of, or removing dust from, containers, wrappers, or packaging ; Preventing of fouling
    • 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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/12—Subdividing filled tubes to form two or more packages by sealing or securing involving displacement of contents

Definitions

  • the disclosure relates to a method for sealing packaging material, preferably a bag, and a chamber machine or belted chamber machine for implementing the method.
  • chamber machines and belted chamber machines which seal plastic bags under vacuum and/or modified atmosphere.
  • the operator can specify the sealing time, sealing temperature and the time point as a function of the set negative pressure in the chamber.
  • the contact pressure of the sealing bar onto a counter-pressure strip for the sealing process is present here at an adequate level and is set by a pressure reducer. Automatic means of control during the evacuation and sealing process is not provided.
  • a further problem is presented by deposits, such as for example product parts of a marinade in the region of the sealing weld, which are present on the inner sides of the bag due to the product filling process.
  • deposits such as for example product parts of a marinade in the region of the sealing weld, which are present on the inner sides of the bag due to the product filling process.
  • this may be a herbal mixture dissolved in water.
  • Small constituent parts of the herbs, which are located in the region where the sealing weld is to be produced, are enclosed within the sealing weld by both sides of the film. Despite this, they may permit a tight sealing weld and a reliably closed bag.
  • the object of the present disclosure is to make a method available for sealing packaging material with which the disadvantages described above can be remedied.
  • At least one sealing bar is heated to a first temperature before or while contact with the packaging material is established.
  • the first temperature is lower than a sealing temperature and higher than a temperature at which liquid product parts are at least partially disintegrated or dissolved to facilitate escape of the product parts from a region in which the packaging materials are to be sealed together.
  • the first temperature is maintained over a defined holding time.
  • the temperature of at least one sealing bar is increased to a sealing temperature and held until sealing of the packaging material is concluded.
  • the method is particularly advantageous for packaging in which a product which, for example, has been externally treated with an aqueous marinade, is enclosed by a packaging material, preferably introduced into a bag, and the packaging material or the sealable bag exhibits a particular suitability or a prescribed use by an end user.
  • a packaging material preferably introduced into a bag
  • the packaging material or the sealable bag exhibits a particular suitability or a prescribed use by an end user.
  • the bag with the product can be subjected to a higher temperature in an oven or in boiling water and consequently the packaging material must have a very high required temperature resistance of up to, for example, 250° C.
  • Plastic bags of this nature are for reasons of cost preferably made from a mono-material such as polyamide or nylon.
  • the method according to the disclosure is however also suitable for all other currently available packaging materials in permitting product parts to escape from the sealing region.
  • the first temperature preferably corresponds to a temperature above 40° C. and preferentially the temperature corresponds to the vaporisation temperature of water or it lies in a temperature range of 40° C. to 220° C.
  • a preferred embodiment of the method provides for a first pressure, which acts relatively between the sealing bar and a counter-pressure strip or another sealing bar, being lower than a second pressure during the sealing process. In this way the application of heat by the sealing bar into the packaging material and the possibility of the escape of product parts from the sealing region are optimised.
  • the packaging material can preferably be a plastic film or a plastic laminated material preferably in the form of a bag.
  • the packaging material can have a temperature resistance, preferably for boiling or roasting the product, preferably in a range from 120° C. to 250° C.
  • the sealing temperature is higher than 250° C. so that the sealing weld remains closed during boiling or roasting.
  • normally small holes are pierced in the packaging material or in the bag, for example with a fork or knife, by the end user.
  • At least one sealing bar can be heated to a pre-heating temperature before being pressed onto the counter-pressure strip or onto the other sealing bar in order to shorten the warm-up time to the first temperature.
  • the process time can preferably also or additionally be brought to a cooling temperature by means of active cooling at which the sealing bar is not immediately removed from the counter-pressure strip or oppositely situated further sealing bar, but instead after the sealing weld has solidified.
  • gassing may follow the evacuation process in order to produce a modified atmosphere, or steam purging may occur instead of evacuation.
  • the controller regulates the temperatures of at least two sealing bars, enclosing the packaging material in order to ensure an optimised heat transfer from the sealing bars into the packaging material and to optimise the complete packaging process.
  • the controller comprises an input device on which an operator can specify the values, such as temperature, pressure and their temporal progression for a process.
  • the method can also be used with packaging processes to heat product parts such as sauces, meat juice and other liquids in the sealing region before the sealing process such that they change their state of aggregation and/or escape from the sealing region due to the temperature change or they can be removed due to the pressure on the film inner sides of the packaging material on the product parts.
  • product parts such as sauces, meat juice and other liquids
  • FIG. 1 illustrates a schematic view of a belted chamber machine
  • FIG. 2 a illustrates a schematic view of the inside of a belted chamber machine with a sealing bar in an open position
  • FIG. 2 b illustrates a schematic view of the inside of a belted chamber machine with a sealing bar in a closed position
  • FIG. 3 a illustrates a schematic view of the inside of a belted chamber machine with two oppositely situated sealing bars in an open position
  • FIG. 3 b illustrates a schematic view of the inside of a belted chamber machine with two oppositely situated sealing bars in a closed position
  • FIG. 4 illustrates a time/temperature and a time/pressure graph of a method according to the disclosure
  • FIG. 5 illustrates a time/temperature and a time/pressure graph in a variant
  • FIG. 6 illustrates a time/temperature and a time/pressure graph in a further variant.
  • FIG. 1 illustrates an embodiment of a belted chamber machine 1 with a feed belt 2 on which bags, which are not illustrated, are deposited filled with products.
  • the belted chamber machine has a transport direction R, an insertion end E and an exit end A.
  • a chamber upper part 3 with a machine table 4 forms a closed chamber which can be evacuated.
  • a controller 14 controls the processes of the belted chamber machine 1 , displays operational information to an operating person and is used for the operating person to make entries.
  • FIG. 2 a illustrates a bag 6 and a product 7 .
  • the product 7 in the bag 6 is inserted into a chamber machine or several bags are fed to a belted chamber machine 1 via the feed belt 2 .
  • the chamber is closed and a vacuum is produced inside the chamber in order to evacuate the bag 6 .
  • a neck 8 of the bag is located between a sealing bar 9 and a counter-pressure strip 10 .
  • the sealing bar 9 is located in an open position so that the inside of the bag 6 is also evacuated. Once the evacuation is terminated in that a vacuum value set by the operating person is reached, the sealing bar 9 , as illustrated in FIG.
  • the heating of the sealing bar 9 is realised by means of electrical resistance heating elements, for example, sealing wire.
  • the sealing bar 9 is heated to a first temperature T 1 before or during the contact with the neck 8 of the bag. Due to the heating of the product residues 11 in the region 12 of the sealing weld to a first temperature T 1 , the liquid part 11 ′ of the product parts 11 vaporises and escapes from the region 12 .
  • This first temperature T 1 is lower than a sealing temperature Ts of the packaging material in order to prevent premature sealing.
  • the temperature of the sealing bar 9 is raised to the sealing temperature Ts and also a sealing pressure Ps between the sealing bar 9 and the counter-pressure strip 10 is produced during a defined period.
  • the contact pressure P 1 is the sealing pressure Ps right from the start.
  • FIGS. 3 a respectively 3 b illustrate a variant of FIGS. 2 a respectively 2 b in which, instead of an unheated counter-pressure strip 10 , a further heatable sealing bar 13 is present.
  • the heat is transferred from the sealing bars 9 and 13 , which are heated to the first temperature T 1 , from both sides onto the bag 6 .
  • the time for this process or for maintaining the temperature in the sealing bars 9 and 13 at the first temperature T 1 can be set by the operating personnel and is regulated by the controller 14 .
  • the increase of the temperature on the sealing bars from the first temperature T 1 to the sealing temperature Ts can be carried out before, simultaneously or after the increase in pressure from the contact pressure P 1 to the higher sealing pressure Ps.
  • FIG. 4 illustrates a t/P (time/pressure) and a t/T (time/temperature) graph which relates to the embodiment of the FIGS. 2 a and 2 b , respectively 3 a and 3 b.
  • the method according to the disclosure provides for a variant in which the sealing bars 9 and 13 crimp the bag 6 and a first temperature T 1 is transferred to the bag 6 by the contact with it during the (holding) time t 1 .
  • the temperature T 1 is higher or equal to a product temperature Tp which must at least be attained in order to change the state of aggregation of the product parts 11 . This is preferably carried out until the product parts 11 , 11 ′ have escaped from the region 12 of the sealing weld to be produced to an extent adequate for the sealing.
  • the temperature of the sealing bars 9 and 13 is raised to the temperature Ts and maintained over the period ts. Thereafter the sealing bars 9 , 13 are cooled to an initial temperature Ta which corresponds to the ambient temperature.
  • the sealing bars 9 , 13 are here cooled by means of cooling water which passes through cooling holes in the sealing bars 9 , 13 .
  • the sealing bars 9 and 13 are first moved away from one another once the temperature has reduced and cooling and thus hardening of the sealing weld has taken place. In this way the risk of the sealing weld adhering to the sealing bars 9 , 13 is reduced.
  • the graph in FIG. 5 illustrates in relation to a second variant that the sealing bars 9 , 13 are heated to a pre-heating temperature Tv before the sealing bars 9 , 13 are moved together in order to attain the first temperature T 1 quickly. Following that, the sealing bars 9 , 13 are brought into contact with the packaging material and a contact pressure Ps is established. After the sealing process, cooling occurs to the pre-heating temperature Tv or to a cooling temperature Ta which can correspond to the ambient temperature. The temperature increase from Tv to T 1 can also occur simultaneously or partially overlapping in time with the pressure increase to Ps.
  • a contact pressure P 1 is set for the displacement of the product parts 11 , 11 ′.
  • This contact pressure P 1 can act during the time t 1 , but also before or after the heating of the sealing bars 9 , 13 to the first temperature T 1 .
  • the increase in the contact pressure P 1 to the sealing pressure Ps can be carried out simultaneously with the temperature increase to Ts.
  • other variants are conceivable which are not illustrated and in which the pressure increase occurs after or before the temperature increase from the first temperature T 1 to the sealing temperature Ts.
  • Cooling takes place to a cooling temperature Ta which preferably corresponds to the ambient temperature or which is set by the active cooling of the sealing bars 9 , 13 .
  • a cooling temperature Ta which preferably corresponds to the ambient temperature or which is set by the active cooling of the sealing bars 9 , 13 .
  • the sealing bar 9 , 13 is heated to the pre-heating temperature Tv.
  • the method according to the disclosure is not restricted to the previously described processes.
  • the pressure increase to the contact pressure Ps or P 1 can also occur before, during or after the heating of the sealing bars 9 , 13 to T 1 or Ts.
  • the pre-heating temperature Tv can also be equal to the first temperature T 1 at the start of the packaging process.
  • the temperature closed-loop control of the sealing bars 9 and 13 occurs using the controller 14 in the same form in order to improve the effect during the packaging process and to speed it up, leading to an increase in the performance of the packaging machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Package Closures (AREA)
  • Vacuum Packaging (AREA)
US13/271,747 2010-10-13 2011-10-12 Method and chamber machine for sealing packaging material Abandoned US20120110956A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010048401.6 2010-10-13
DE102010048401A DE102010048401B4 (de) 2010-10-13 2010-10-13 Verfahren und Kammermaschine zum Versiegeln von Verpackungsmaterial

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US (1) US20120110956A1 (fr)
EP (1) EP2441570A3 (fr)
DE (1) DE102010048401B4 (fr)

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US20140069057A1 (en) * 2012-09-10 2014-03-13 Multivac Sepp Haggenmuller Gmbh & Co. Kg Method for operating a chamber packaging machine
US20140305586A1 (en) * 2013-04-15 2014-10-16 Miller Weldmaster Corporation Hot wedge welding machine and method of operation
US20150027089A1 (en) * 2012-10-22 2015-01-29 Sunbeam Products, Inc. Vacuum Packaging and Sealing Appliance with Cooling Fan
NL2017540B1 (en) * 2016-09-27 2018-04-04 Audion Elektro Bv Heat sealing apparatus
US10029407B2 (en) 2014-12-04 2018-07-24 Big Heart Pet, Inc. Apparatus, processes, and systems for heat sealing
EP3366596A1 (fr) * 2017-02-28 2018-08-29 Immobles del Segria, S.L. Procédé d'emballage sous vide de produits alimentaires
US20180319523A1 (en) * 2015-11-10 2018-11-08 Cryovac, Inc. Apparatus and process for evacuation of packages
CN113415481A (zh) * 2021-07-13 2021-09-21 许雪霞 一种膨化食品充气包装系统
CN115402603A (zh) * 2022-11-02 2022-11-29 江西仟方智能科技有限公司 一种中药饮片包装封口干燥装置

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DE102011075986A1 (de) * 2010-11-02 2012-05-03 Rovema Gmbh Verfahren zur energieeffizienten Siegelung von Schlauchbeuteln
CN108408124A (zh) * 2018-04-18 2018-08-17 威海威高血液净化制品有限公司 一种血液处理器包装方法及包装设备
DE102020130654A1 (de) 2020-11-19 2022-05-19 Multivac Sepp Haggenmüller Se & Co. Kg Verpackungsvorrichtung
EP4212310A1 (fr) * 2022-01-14 2023-07-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Procédé et dispositif d'assemblage de films en matière plastique par assemblage thermique, ainsi qu'utilisation d'une presse à impact
DE102022133722A1 (de) 2022-12-16 2024-06-27 Multivac Sepp Haggenmüller Se & Co. Kg Siegelstation und Verfahren zum Siegeln einer Verpackung

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140069057A1 (en) * 2012-09-10 2014-03-13 Multivac Sepp Haggenmuller Gmbh & Co. Kg Method for operating a chamber packaging machine
US9550595B2 (en) * 2012-09-10 2017-01-24 Multivac Sepp Haggenmueller Se & Co. Kg Method for operating a chamber packaging machine
US20150027089A1 (en) * 2012-10-22 2015-01-29 Sunbeam Products, Inc. Vacuum Packaging and Sealing Appliance with Cooling Fan
US20140305586A1 (en) * 2013-04-15 2014-10-16 Miller Weldmaster Corporation Hot wedge welding machine and method of operation
US9446555B2 (en) * 2013-04-15 2016-09-20 Miller Weldmaster Corporation Hot wedge welding machine and method of operation
US10029407B2 (en) 2014-12-04 2018-07-24 Big Heart Pet, Inc. Apparatus, processes, and systems for heat sealing
US20180319523A1 (en) * 2015-11-10 2018-11-08 Cryovac, Inc. Apparatus and process for evacuation of packages
US10906677B2 (en) * 2015-11-10 2021-02-02 Cryovac, Llc Apparatus and process for evacuation of packages
NL2017540B1 (en) * 2016-09-27 2018-04-04 Audion Elektro Bv Heat sealing apparatus
EP3366596A1 (fr) * 2017-02-28 2018-08-29 Immobles del Segria, S.L. Procédé d'emballage sous vide de produits alimentaires
CN113415481A (zh) * 2021-07-13 2021-09-21 许雪霞 一种膨化食品充气包装系统
CN115402603A (zh) * 2022-11-02 2022-11-29 江西仟方智能科技有限公司 一种中药饮片包装封口干燥装置

Also Published As

Publication number Publication date
DE102010048401B4 (de) 2013-01-31
EP2441570A2 (fr) 2012-04-18
DE102010048401A1 (de) 2012-04-19
EP2441570A3 (fr) 2015-04-15

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