WO2010058052A1 - Procédé et dispositif pour sceller par thermosoudure les parois latérales d'un contenant souple au corps de support d'une canette - Google Patents

Procédé et dispositif pour sceller par thermosoudure les parois latérales d'un contenant souple au corps de support d'une canette Download PDF

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Publication number
WO2010058052A1
WO2010058052A1 PCT/ES2009/070499 ES2009070499W WO2010058052A1 WO 2010058052 A1 WO2010058052 A1 WO 2010058052A1 ES 2009070499 W ES2009070499 W ES 2009070499W WO 2010058052 A1 WO2010058052 A1 WO 2010058052A1
Authority
WO
WIPO (PCT)
Prior art keywords
side walls
support body
sealing
groove
container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/ES2009/070499
Other languages
English (en)
Spanish (es)
Inventor
Ramon Figols Gamiz
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.)
Volpak SA
Original Assignee
Volpak SA
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 Volpak SA filed Critical Volpak SA
Publication of WO2010058052A1 publication Critical patent/WO2010058052A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • 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
    • 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
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • 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
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
    • B29C66/2422—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical
    • B29C66/24223—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical being oval
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/326—Shaping the burr, e.g. by the joining tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/328—Leaving the burrs unchanged for providing particular properties to the joint, e.g. as decorative effect
    • B29C66/3282—Leaving the burrs unchanged for providing particular properties to the joint, e.g. as decorative effect for reinforcing the joint
    • 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
    • B29C66/346—Making joints having variable thicknesses in the joint area, e.g. by using jaws having an adapted configuration
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • B29C66/53261—Enclosing tubular articles between substantially flat elements
    • B29C66/53262—Enclosing spouts between the walls of bags, e.g. of medical 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
    • 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
    • B29C66/81—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
    • B29C66/81423—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 concave
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—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
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0068—Permeability to liquids; Adsorption
    • B29K2995/0069—Permeability to liquids; Adsorption non-permeable
    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B65B61/186—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying or incorporating rigid fittings, e.g. discharge spouts

Definitions

  • the invention relates to a method and to a device for heat sealing of the side walls of a flexible container to the support body of a tap interposed between said side walls, which in a conventional way comprises the operation of applying under pressure. , by pushing the concave operating surface of a corresponding jaw, each of the side walls of the container against a respective convex sealing surface of the support body of the spigot; and the operation of providing heat to cause the joining of said side walls of the container and the sealing surfaces of the support body by fusion of the materials that constitute them.
  • flexible containers or containers particularly adapted to contain food or other products with a fluid or low solid consistency is currently being extended, due to their lower manufacturing costs and great versatility.
  • One embodiment of these containers is that formed by a flexible bag or container provided with a spout in an opening of the container, the entry and / or exit of the contents of the container being provided by said spigot.
  • said spikes comprise a tubular body, which forms a passage for the entry or exit of the product contained in the bag, provided near its mouth with fastening means, generally a thread, to attach a cap and close it mode Ia spits at its free end.
  • the spout comprises at its opposite end a support body intended to be interposed between the upper end edges of the side walls of the container or bag and tightly attached to said side walls through two sealing surfaces.
  • the union of the support body of the spigot with the laminar walls of the container is a delicate operation, and more when the sealing surfaces of the support body are smooth.
  • the sealing must guarantee a perfect seal To avoid unwanted exits of the contained product as well as inputs of external substances that could alter its state.
  • a particularly advantageous joining method due to its simplicity and efficiency is heat welding.
  • the weld joint consists in increasing the coalescence between the materials to be joined by heating them with the help of a hot body until at least one of the materials reaches its melting temperature.
  • the material of the walls of the container melts before the support body of the spigot, and after ceasing to apply heat to the molten material, it cools again and thus recovers its initial solid state but being fully adhered to the parts in contact with The support body.
  • said side walls are applied, under pressure, against the sealing surfaces of the support body by means of a hot body, normally a specially designed jaw in accordance with the contour of the sealing walls.
  • the jaws used are provided with smooth operating surfaces in correspondence with the smooth sealing surfaces of the support body of the spigot in order to produce a uniform contact between said surfaces, with interposition of the corresponding wall of the container.
  • the higher the pressure exerted by the jaws the less time will be required for the sealing to occur, however, if said pressure is too high, it may cause the walls to be flexed on which the sealing surfaces are formed and cause irregularities in the sealing. sealed. Consequently, the time per cycle in an automatic packaging machine cannot be reduced by increasing the force exerted by the jaws on the support body of the spigot.
  • the method according to the invention is applicable for spout support bodies whose sealing surfaces are convex and essentially characterized in that the concave operating surface of at least one of the jaws used to apply a corresponding side wall of the container under pressure against a respective sealing surface it is provided with at least one groove, parallel and transverse to the direction of exit of the packaged product through the spigot, which determines a housing for the accumulation of molten material that, when compressed, flows towards the it formed, said melt accumulation forming a respective weld bead of greater thickness.
  • the device for the implementation of the method according to the invention comprises a pair of facing jaws between which the assembly formed by the spigot and said side walls can be arranged, the jaws being movable in the direction to said support body and being provided with concave operating surfaces adapted to apply each of the side walls of the container under pressure against a respective convex sealing surface of the support body of the spigot and to cause, by means of heat, the union of said side walls of the container and of the sealing surfaces of the support body by fusion of the materials that constitute them.
  • the device according to the invention is essentially characterized in that at least one of said concave operating surfaces is provided with at least one groove, and preferably a plurality of grooves parallel to each other and arranged in respective planes transverse to the axis of the concavity of the Ia operating surface
  • each of the concave operating surfaces extends, on both sides of the concavity, on both flat and coplanar lateral operating surfaces, and at least one of the striations extends along the entire length of the entire concave operating surface and at least partially along both flat side operating surfaces.
  • each groove determines a pair of live transition corners between said operating surfaces and the interior of each groove.
  • the depth of the stretch marks in this variant embodiment is comprised between 0.1 and 0.3 mm.
  • each groove is formed by the gap determined between two adjacent and parallel ribs, whose respective edges are convex curved, which are preferably of semi-cylindrical cross-section and radius between 0.5 and 1, 25 mm
  • the depth of the stretch marks measured from the most protruding end of the ribs is between 0.1 and 0.5 mm.
  • each of the stretch marks has a quadrangular section, preferably parallelepipedic.
  • all stretch marks have the same section and the same dimensions.
  • stretch marks are equidistant.
  • the distance between the stretch marks is between 1 and 2.5 mm.
  • Figs. 1 and 2 are schematic views of a set of jaws and the assembly formed by the support body of the spigot and the side walls of the package to be made, sectioned according to a diametral cutting plane, before and during the intervention of the jaws ;
  • Fig. 3 is a perspective view of the operative surface of the jaw of a device according to the invention.
  • Fig. 4 is a sectional view of the operating surface of a jaw according to another variant of the invention.
  • Figs. 1 and 2 the support body 3 of a spigot, essentially cylindrical or oval, is shown in elevation and schematically.
  • the support body 3 there are two sealing surfaces 3a and 3b facing each other, smooth, and although it is not seen in these Figs. 1 and 2, generally convex in a semicircular arc, that is to say semi-cylindrical or semioval.
  • Fig. 1 facing the sealing surfaces 3a and 3b, the side walls 2 of the packaging are represented, which must be applied under pressure against the respective sealing surfaces 3a and 3b by pushing the jaws 5a and 5b, and in particular for its corresponding concave operating surfaces (the concavity is shown in Fig. 3) 6a and 6b.
  • the concave operating surfaces 6a and 6b are provided with a plurality of grooves 7 parallel to each other and arranged in respective planes transverse to axis 8 of the concavity.
  • the jaws 5a and 5b are movably mounted with respect to the chassis of a welding device, so that they can be moved closer and further in each operating cycle of the welding device.
  • Fig. 2 the moment in which the jaws 5a and 5b exert pressure against the support body of the spigot 3 and apply the side walls 2 against the respective sealing surfaces 3a and 3b, is shown and is observed as the thickness of the side walls 2 has decreased, due to the pressure exerted on them by the concave operating surfaces 6a and 6b, and also by the fact that part of the material constituting both the side walls 2 and The spout 3 has melted and flows in the direction of the grooves 7. It is further appreciated that, in this situation, the grooves 7 determine two housings for the accumulation of molten material, said accumulations 9 of molten matter forming respective weld beads of greater thickness , which will guarantee the sealing of the seal as explained below.
  • the reduction in the thickness of the side walls 2 of the container can cause, spatially when small particles of the product stored in the container are embedded between the molten material in the area sealed, sealing defects are generated, an aspect that is intended to be avoided with this invention.
  • the particles that may be deposited in the sealing zone are dragged by the molten material that flows to the striations 7, being deposited in the housings that determine the grooves 7 where respective accumulations 9 of material occur cast, and where the sealing area has a greater thickness. In these thicker areas, the particles are completely wrapped in molten material, thus guaranteeing the sealed seal that is pursued.
  • the pushing force exerted by the jaws 5a and 5b against the support body 3 is the same as in conventional procedures, since the direct contact surface exerted by the concave operating surface 6a and 6b of the jaws has been reduced 5a and 5b, respectively, against the side walls 2 of the container and consequently against the sealing surfaces 3a and 3b, the pressure exerted by the portions of the concave operating surface 6a or 6b provided with grooves 7 is greater, being reduced by Ia practice the time necessary for the effect of thermo welding.
  • a variant has been shown that has proved especially advantageous.
  • a portion of a jaw 5a is shown, which comprises a concave operating surface 6a which extends, on both sides of the concavity, on both flat and coplanar side 1 and 12 side operating surfaces. It can be seen in the example shown in Fig. 3 that the grooves 7 extend along the entire concave operating surface 6a and along a part of both flat lateral operating surfaces 1 1 and 12.
  • This variant is of special application for bodies of support 3 incorporating diametrically opposed external lateral fins, which increase the contact surface between the side walls 2 of the container and the support body 3 of the spigot, while facilitating the transition from an area where the side walls 2 are mutually applied to an area in which its orientation varies when applied against the sealing surfaces 3a and 3b of the support body 3 of the spigot.
  • stretch marks 7 have the same quadrangular section in general, specifically parallelepipedic, the depth of stretch marks 7 being 0.2 mm.
  • the grooves 7 are equidistant, the possibility is contemplated that the distance between each two consecutive grooves 7 may vary, for example, more joints are arranged at the bottom of the concave operating surfaces 6a and 6b and flat sides 1 1 and 12, as well as that its depth is not constant or that it varies from a groove 7 to another contiguous groove.
  • each groove 7 determines a pair of live transition corners between the operative surface of the jaw, of straight cross section, and the inside of each groove.
  • the width of the stretch marks is comprised between 0.1 and 0.3 mm,
  • each groove 7 is formed by the gap determined between two adjacent and parallel ribs 13, whose respective edges are of semi-cylindrical cross-section, with a radius between 0.5 and 1.25 mm
  • the width of the stretch marks is greater in comparison with the example of Figs. 1 and 2, preferably being 1 to 2, 5 mm, which entails the formation of wider weld seams, which determine transverse strips with accumulation of molten material.
  • the edges of the ribs 13 of cylindrical cross-section the molten matter flows more easily in the direction of the striations 7, and reduces the formation of discontinuities in the outer surface of the molten material, once solidified.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Bag Frames (AREA)

Abstract

Selon l'invention, un procédé pour sceller par thermosoudure les parois latérales d'un contenant souple au corps de support d'une canette consiste à acheminer de la chaleur et à presser chacune des parois latérales du contenant contre une surface associée convexe de scellement du corps de support de la cannette, par poussée de la surface fonctionnelle concave d'une mâchoire associée. Le procédé est caractérisé en ce que la surface fonctionnelle d'au moins une des mâchoires utilisées est pourvue d'au moins une strie et de préférence de plusieurs stries (7), parallèles entre elles et transversales à la direction de sortie du produit présent dans la canette, lesdites stries déterminant des logements respectifs pour l'accumulation de matière fondue qui, lorsqu'elle est comprimée, s'écoule vers les stries (7), ce qui entraîne la formation desdites accumulations de matière fondue correspondant à des cordons de soudure d'épaisseur plus importante.
PCT/ES2009/070499 2008-11-18 2009-11-12 Procédé et dispositif pour sceller par thermosoudure les parois latérales d'un contenant souple au corps de support d'une canette Ceased WO2010058052A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESP200803338 2008-11-18
ES200803338A ES2354540B1 (es) 2008-11-18 2008-11-18 Procedimiento y dispositivo para el sellado por termosoldadura de las paredes laterales de un envase flexible al cuerpo de soporte de una espita.

Publications (1)

Publication Number Publication Date
WO2010058052A1 true WO2010058052A1 (fr) 2010-05-27

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PCT/ES2009/070499 Ceased WO2010058052A1 (fr) 2008-11-18 2009-11-12 Procédé et dispositif pour sceller par thermosoudure les parois latérales d'un contenant souple au corps de support d'une canette

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ES (1) ES2354540B1 (fr)
WO (1) WO2010058052A1 (fr)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
US10155615B2 (en) 2016-09-26 2018-12-18 Dow Global Technologies Llc Seal bar and process for using same
US10173821B2 (en) 2016-09-26 2019-01-08 Dow Global Technologies Llc Flexible fitment for flexible container

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12312116B2 (en) * 2020-09-09 2025-05-27 watttron GmbH Sealing element

Citations (8)

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Publication number Priority date Publication date Assignee Title
US3322590A (en) * 1964-03-09 1967-05-30 Plastronics Inc Method for making a sealed connection between a tube and a container
US3558397A (en) * 1968-02-15 1971-01-26 Plastronics Inc Method of making a tube-to-bag connection
GB1465963A (en) * 1974-06-01 1977-03-02 Cdm Plastics Ltd Welding of plastics materials
JPH0355062A (ja) * 1989-07-22 1991-03-08 Nissho Corp 医療用バッグ製造用金型およびそれを用いた製法
JPH03132307A (ja) * 1989-10-18 1991-06-05 Nissho Corp 医療用バッグ製造用金型
DE29612778U1 (de) * 1996-07-23 1996-09-19 Rapid-Spray GmbH & Co. KG Fabrik chemischer Erzeugnisse, 88471 Laupheim Werkzeug zum gasdichten Verbinden des Innenbeutels einer Aerosoldose mit dem Ventilhalter
JP2000237280A (ja) * 1999-02-18 2000-09-05 Kawasumi Lab Inc 医療用バックの製造方法及び口部金型
JP2004202756A (ja) * 2002-12-24 2004-07-22 Showa Denko Plastic Products Co Ltd 樹脂溶着部の冷却装置およびこれを備えた輸液バッグの製造装置ならびに輸液バッグの製造方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3322590A (en) * 1964-03-09 1967-05-30 Plastronics Inc Method for making a sealed connection between a tube and a container
US3558397A (en) * 1968-02-15 1971-01-26 Plastronics Inc Method of making a tube-to-bag connection
GB1465963A (en) * 1974-06-01 1977-03-02 Cdm Plastics Ltd Welding of plastics materials
JPH0355062A (ja) * 1989-07-22 1991-03-08 Nissho Corp 医療用バッグ製造用金型およびそれを用いた製法
JPH03132307A (ja) * 1989-10-18 1991-06-05 Nissho Corp 医療用バッグ製造用金型
DE29612778U1 (de) * 1996-07-23 1996-09-19 Rapid-Spray GmbH & Co. KG Fabrik chemischer Erzeugnisse, 88471 Laupheim Werkzeug zum gasdichten Verbinden des Innenbeutels einer Aerosoldose mit dem Ventilhalter
JP2000237280A (ja) * 1999-02-18 2000-09-05 Kawasumi Lab Inc 医療用バックの製造方法及び口部金型
JP2004202756A (ja) * 2002-12-24 2004-07-22 Showa Denko Plastic Products Co Ltd 樹脂溶着部の冷却装置およびこれを備えた輸液バッグの製造装置ならびに輸液バッグの製造方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10155615B2 (en) 2016-09-26 2018-12-18 Dow Global Technologies Llc Seal bar and process for using same
US10173821B2 (en) 2016-09-26 2019-01-08 Dow Global Technologies Llc Flexible fitment for flexible container

Also Published As

Publication number Publication date
ES2354540B1 (es) 2012-01-31
ES2354540A1 (es) 2011-03-16

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