US20110024439A1 - Packaging with a subsequently molded form-fit connection - Google Patents

Packaging with a subsequently molded form-fit connection Download PDF

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Publication number
US20110024439A1
US20110024439A1 US12/900,337 US90033710A US2011024439A1 US 20110024439 A1 US20110024439 A1 US 20110024439A1 US 90033710 A US90033710 A US 90033710A US 2011024439 A1 US2011024439 A1 US 2011024439A1
Authority
US
United States
Prior art keywords
packaging
lid
trough
connection
molded
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
US12/900,337
Inventor
Dietmar Send
Peter Riegger
Joachim Wokurka
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.)
GEA CFS Germany GmbH
Original Assignee
CFS Germany GmbH
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
Priority claimed from US11/181,037 external-priority patent/US7665281B2/en
Application filed by CFS Germany GmbH filed Critical CFS Germany GmbH
Priority to US12/900,337 priority Critical patent/US20110024439A1/en
Publication of US20110024439A1 publication Critical patent/US20110024439A1/en
Abandoned 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
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • 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
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/58—Snap connection
    • 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
    • B29C66/24221—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 circular
    • 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
    • B29C66/2424—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 a closed polygonal chain
    • B29C66/24243—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 a closed polygonal chain forming a quadrilateral
    • B29C66/24244—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 a closed polygonal chain forming a quadrilateral forming a rectangle
    • B29C66/24245—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 a closed polygonal chain forming a quadrilateral forming a rectangle forming a square
    • 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
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
    • 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
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/545—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles one hollow-preform being placed inside the other
    • 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
    • B29C66/843—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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/28—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
    • B65B7/2842—Securing closures on containers
    • B65B7/285—Securing closures on containers by deformation of the closure
    • B65B7/2857—Securing closures on containers by deformation of the closure and the container rim
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D43/00—Lids or covers for rigid or semi-rigid containers
    • B65D43/02—Removable lids or covers
    • B65D43/0202—Removable lids or covers without integral tamper element
    • B65D43/0204—Removable lids or covers without integral tamper element secured by snapping over beads or projections
    • B65D43/0212—Removable lids or covers without integral tamper element secured by snapping over beads or projections only on the outside, or a part turned to the outside, of the mouth
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/001—Shaping in several 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • 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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00064—Shape of the outer periphery
    • B65D2543/0012—Shape of the outer periphery having straight sides, e.g. with curved corners
    • B65D2543/00175—Shape of the outer periphery having straight sides, e.g. with curved corners four straight sides, e.g. trapezium or diamond
    • B65D2543/00194—Shape of the outer periphery having straight sides, e.g. with curved corners four straight sides, e.g. trapezium or diamond square or rectangular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00259—Materials used
    • B65D2543/00296—Plastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
    • B65D2543/00527—NO contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00601—Snapping means on the container
    • B65D2543/00611—Profiles
    • B65D2543/0062—Groove or hollow bead
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00601—Snapping means on the container
    • B65D2543/00675—Periphery concerned
    • B65D2543/00694—Segments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00712—Snapping means on the lid
    • B65D2543/00722—Profiles
    • B65D2543/00731—Groove or hollow bead

Definitions

  • the present invention relates to a packaging with a packaging trough, into which a packaging material can be filled and which is closed with a lid, whereby at least one form-fit connection connects the packaging trough with the lid and the connection comprises a first and a second connection means.
  • Items of packaging as a rule comprise a packaging trough, into which the packaging material, for example foodstuff, can be filled.
  • This packaging trough is then closed with an, as a rule, preformed lid.
  • This form-fit connection comprises two connection elements, for example a groove and a tongue, whereby the tongue is introduced into the groove.
  • connection elements are molded into the lid and into the packaging trough during deep-drawing. Since the lid and the packaging trough must, however, be able to be removed again from the respective deep-drawing die after deep-drawing and one connection element must be able to be introduced into the other, the shape of the connection elements is very greatly restricted.
  • the problem of the present invention was to make available a packaging that does not display the drawbacks of the prior art.
  • a packaging with a packaging trough into which a packaging material can be filled and which is closed with a lid, whereby at least one form-fit connection connects the packaging trough with the lid and the connection comprises a first and a second connection element, wherein at least one connection element has been molded at least partially into the packaging after the packaging trough has been closed with the lid.
  • the packaging comprises a packaging trough, into which the packaging material can be filled, and a lid.
  • Both the packaging trough and the lid are preferably manufactured from a plastics material and are deep-drawn in each case.
  • the plastic material may be comparatively stiff and/or foamed.
  • At least one, but preferably several, form-fit connections are arranged between the lid and the packaging trough, whereby the form-fit connection is brought about in such a way that the force that is required to detach the lid from the packaging trough is increased.
  • the form-fit connections can be distributed arbitrarily over the circumference of the packaging.
  • the form-fit connections can be combined with a joint, whereby at least one form-fit connection is then arranged opposite the hinge (joint).
  • the form-fit connections can also be used as snap connections for the re-closure of the items of packaging.
  • the form-fit connection comprises a first and a second connection means, which engage into one another and thus bring about the form-fit connection.
  • All connection elements familiar to the expert can be considered as connection elements, with which it is possible to achieve a form closure between the packaging trough and the lid.
  • the connection element is a groove and tongue connection or two spherical part-shells which engage into one another.
  • the connection preferably extends parallel to the transport direction of the film web from which the packaging is produced.
  • the packaging has at least one, but preferably two or more, form-fit connections.
  • the lid and the packaging trough are preferably sealed to one another in the region of a sealing plane.
  • This sealing is preferably peelable, so that the packaging can be closed again by means of the form-fit connection.
  • connections are preferably inserted by thermal molds into the packaging trough.
  • the connection should preferably be inserted from the inside to the outside, i.e. the circumference of the packaging increases in the region of the connection.
  • the advantage of this design of the present invention is that the surface by which the goods can be removed from the packaging is not reduced by the inner moldings, or that no additional outward bulges have to made into which the connections are then shaped, as disclosed in EP 0 367 603 A2.
  • the inner molding is preferably located in the lateral walls of the packaging trough.
  • the lid is preferably sealed to the packaging trough. This sealing is preferably peelable so that the connection serves as a resealing device after the packaging is opened for the first time.
  • the lid is preferably sealed to the packaging trough along an essentially horizontal sealing plane.
  • the items of packaging may be arbitrarily shaped, but the items of packaging preferably have an essentially square or round base surface.
  • FIGS. 1 to 2B The invention will be explained below with the aid of FIGS. 1 to 2B . These explanations are merely by way of example and do not restrict the general ideas of the invention. The explanations apply equally to all the subject-matters of the present invention.
  • FIG. 1 shows the packaging according to the invention
  • FIG. 2 shows two possible embodiments of the form-fit connection.
  • FIG. 1 shows the packaging according to the invention, which comprises a packaging trough 2 and a lid 3 .
  • a packaging material for example foodstuff, can be placed into packaging trough 2 .
  • Packaging trough 2 is then closed with lid 3 .
  • form-fit connection 4 is molded into the lid and/or the packaging trough.
  • the form-fit connection is molded both into lid 3 and into packaging trough 2 .
  • the packaging according to the invention is produced on a packaging machine, whereby the packaging trough and the lid are either placed as ready molded parts into the packaging machine or are molded into a plane film web, for example by deep-drawing.
  • the items of packaging are transported, preferably cyclically, along the running direction represented by the arrow inside the packaging machine.
  • form-fit connection 4 is arranged parallel to the running direction of the packaging machine.
  • the lid and the packaging trough are sealed to one another in a peelable manner in the region of the sealing plane before the form-fit connection has been molded into the packaging.
  • FIG. 2A-B show two possible design shapes of the form-fit connection.
  • FIG. 2A shows a groove tapering to a point, which extends into and out of the plane of the paper. Due to the fact that the form-fit connection is molded into the lid and the packaging trough only after the lid has been placed onto the packaging trough, it is possible to produce shapes of the form-fit connection which were not possible according to the prior art. For example, it was not possible to produce a groove and tongue in such a pointed fashion depicted in FIG. 2A , without the latter either no longer being able to be removed from the mould or becoming damaged during the fitting together of the lid and the packaging trough.
  • FIG. 2B represents a hemispherical design of the form-fit connection.
  • the expert will understand that it is advantageous for several such spherical form-fit connections to be arranged over the circumference of the packaging trough. Reference is further made to the comments concerning the embodiment according to FIG. 2A .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Abstract

The present invention relates to a packaging with a packaging trough, into which a packaging material can be filled and which is closed with a lid, whereby at least one form-fit connection connects the packaging trough with the lid and the connection comprises a first and a second connector.

Description

  • This application claims benefit of Ser. No. 11/609,637, filed on Dec. 16, 2006, which is a Continuation-in-part and claims benefit from U.S. patent application Ser. No. 11/181,037, filed on Jul. 13, 2005, now U.S. Pat. No. 7,665,281, which claims the benefit of International Application No. PCT/EP2004/003413, International Filing Date, Mar. 31, 2004, which designated the United States of America, and which international application was published under PCT Article 21 (2) as No. WO 2004/089583 A3 and which claims priority from German Application No. 10316303.4, filed Apr. 8, 2003.
  • The present invention relates to a packaging with a packaging trough, into which a packaging material can be filled and which is closed with a lid, whereby at least one form-fit connection connects the packaging trough with the lid and the connection comprises a first and a second connection means.
  • Items of packaging as a rule comprise a packaging trough, into which the packaging material, for example foodstuff, can be filled. This packaging trough is then closed with an, as a rule, preformed lid. In order to increase the pull-off force of the lid from the packaging trough after the initial opening, it is advantageous for the re-closure capability if at least one form-fit connection is present between the lid and the packaging trough. This form-fit connection comprises two connection elements, for example a groove and a tongue, whereby the tongue is introduced into the groove.
  • At present, the connection elements are molded into the lid and into the packaging trough during deep-drawing. Since the lid and the packaging trough must, however, be able to be removed again from the respective deep-drawing die after deep-drawing and one connection element must be able to be introduced into the other, the shape of the connection elements is very greatly restricted.
  • The problem of the present invention, therefore, was to make available a packaging that does not display the drawbacks of the prior art.
  • This problem is solved with a packaging with a packaging trough, into which a packaging material can be filled and which is closed with a lid, whereby at least one form-fit connection connects the packaging trough with the lid and the connection comprises a first and a second connection element, wherein at least one connection element has been molded at least partially into the packaging after the packaging trough has been closed with the lid.
  • It was extremely surprising for the expert and not to be expected that the packaging according to the invention can have an arbitrarily shaped form-fit connection between the lid and the packaging trough. Very great design possibilities of the form-fit connection between the packaging trough and the lid thus arise, so that the force that is required to remove the lid from the packaging trough can for example be adjusted very exactly. The packaging according to the invention can be produced in a straightforward manner and cost effectively.
  • According to the invention, the packaging comprises a packaging trough, into which the packaging material can be filled, and a lid. Both the packaging trough and the lid are preferably manufactured from a plastics material and are deep-drawn in each case. The plastic material may be comparatively stiff and/or foamed. At least one, but preferably several, form-fit connections are arranged between the lid and the packaging trough, whereby the form-fit connection is brought about in such a way that the force that is required to detach the lid from the packaging trough is increased. The form-fit connections can be distributed arbitrarily over the circumference of the packaging. Furthermore, the form-fit connections can be combined with a joint, whereby at least one form-fit connection is then arranged opposite the hinge (joint). Furthermore, the form-fit connections can also be used as snap connections for the re-closure of the items of packaging. According to the invention, the form-fit connection comprises a first and a second connection means, which engage into one another and thus bring about the form-fit connection. All connection elements familiar to the expert can be considered as connection elements, with which it is possible to achieve a form closure between the packaging trough and the lid. Preferably, however, the connection element is a groove and tongue connection or two spherical part-shells which engage into one another. The connection preferably extends parallel to the transport direction of the film web from which the packaging is produced.
  • According to the invention, the packaging has at least one, but preferably two or more, form-fit connections.
  • The lid and the packaging trough are preferably sealed to one another in the region of a sealing plane. This sealing is preferably peelable, so that the packaging can be closed again by means of the form-fit connection.
  • The connections are preferably inserted by thermal molds into the packaging trough. The connection should preferably be inserted from the inside to the outside, i.e. the circumference of the packaging increases in the region of the connection. The advantage of this design of the present invention is that the surface by which the goods can be removed from the packaging is not reduced by the inner moldings, or that no additional outward bulges have to made into which the connections are then shaped, as disclosed in EP 0 367 603 A2.
  • The inner molding is preferably located in the lateral walls of the packaging trough.
  • The lid is preferably sealed to the packaging trough. This sealing is preferably peelable so that the connection serves as a resealing device after the packaging is opened for the first time. The lid is preferably sealed to the packaging trough along an essentially horizontal sealing plane.
  • The items of packaging may be arbitrarily shaped, but the items of packaging preferably have an essentially square or round base surface.
  • The invention will be explained below with the aid of FIGS. 1 to 2B. These explanations are merely by way of example and do not restrict the general ideas of the invention. The explanations apply equally to all the subject-matters of the present invention.
  • FIG. 1 shows the packaging according to the invention and
  • FIG. 2 shows two possible embodiments of the form-fit connection.
    •
  • FIG. 1 shows the packaging according to the invention, which comprises a packaging trough 2 and a lid 3. A packaging material, for example foodstuff, can be placed into packaging trough 2. Packaging trough 2 is then closed with lid 3. After the packaging trough has been closed with the lid, form-fit connection 4 is molded into the lid and/or the packaging trough. In the present case, the form-fit connection is molded both into lid 3 and into packaging trough 2. The packaging according to the invention is produced on a packaging machine, whereby the packaging trough and the lid are either placed as ready molded parts into the packaging machine or are molded into a plane film web, for example by deep-drawing. In each case, the items of packaging are transported, preferably cyclically, along the running direction represented by the arrow inside the packaging machine. The expert will recognize that, in the present case, form-fit connection 4 is arranged parallel to the running direction of the packaging machine. The lid and the packaging trough are sealed to one another in a peelable manner in the region of the sealing plane before the form-fit connection has been molded into the packaging.
  • FIG. 2A-B show two possible design shapes of the form-fit connection. FIG. 2A shows a groove tapering to a point, which extends into and out of the plane of the paper. Due to the fact that the form-fit connection is molded into the lid and the packaging trough only after the lid has been placed onto the packaging trough, it is possible to produce shapes of the form-fit connection which were not possible according to the prior art. For example, it was not possible to produce a groove and tongue in such a pointed fashion depicted in FIG. 2A, without the latter either no longer being able to be removed from the mould or becoming damaged during the fitting together of the lid and the packaging trough.
  • FIG. 2B represents a hemispherical design of the form-fit connection. The expert will understand that it is advantageous for several such spherical form-fit connections to be arranged over the circumference of the packaging trough. Reference is further made to the comments concerning the embodiment according to FIG. 2A.

Claims (18)

1. A packaging (1) with a packaging trough (2), into which a packaging material can be filled and which is closed with a lid (3), whereby at least one form-fit connection (4) connects the packaging trough (2) with the lid (3) and the connection (4) comprises a first and a second connection element (4′, 4″), characterized in that at least one connection element (4′, 4″) has been molded at least partially into the packaging (1) after the packaging trough (2) has been closed with the lid (3).
2. The packaging according to claim 1, characterized in that both connection elements (4′, 4″) are molded into the packaging after the packaging trough (2) has been closed with the lid (3).
3. The packaging according to claim 1, characterized in that the connection elements are groove (4′) and tongue (4″).
4. The packaging according to claim 1, characterized in that the form closure increases the pull-off force of the lid (3) from the packaging trough (2).
5. The packaging according to claim 1, characterized in that the connection (4) is arranged parallel to the direction of transport of the items of packaging in a packaging machine.
6. The packaging according to claim 1, characterized in that it has at least two form-fit connections (4).
7. The packaging according to claim 1, characterized in that the lid (3) and the packaging trough (2) are sealed to one another, preferably in a peelable manner.
8. A method for producing a packaging (1) having a packaging trough (2) and a lid (3), whereby the packaging trough (2) is closed with the lid (3), characterized in that a form-fit connection (4), which connects the lid with the packaging trough, is then molded into the packaging.
9. The method according to claim 8, characterized in that the connection (4) is molded into the packaging after the lid has been sealed to the packaging trough.
10. The method according to claim 1, characterized in that the connections are preferably molded in transversely to the direction of conveying.
11. The method according to claim 1, characterized in that the connections are molded in with an embossing means which interacts with a counter-bearing (7), and in that the counter-bearing is rotated and lowered after molding in.
12. A packaging machine having embossing means (5, 6) with which at least one connection element (4′, 4″) can be molded into a packaging.
13. The packaging machine according to claim 10, characterized in that the embossing means (5, 6) are mounted so as to be displaceable crosswise to the direction of transport of the film web.
14. The packaging machine according to claim 1, characterized in that the embossing means (5, 6) cooperate with counter-bearings (7).
15. The packaging machine according to claim 1, characterized in that it has a sealing station and that the embossing means (5, 6) are downstream of the sealing station.
16. The packaging machine according to claim 13, characterized in that the counter-bearings (7) are arranged so that they are vertically displaceable.
17. The packaging machine according to claim 13, characterized in that the counter-bearings (7) are rotabably mounted.
18. The packaging machine according to claim 1, characterized in that it has a sealing station and in that the embossing means (5, 6) are arranged after the sealing station.
US12/900,337 2005-07-13 2010-10-07 Packaging with a subsequently molded form-fit connection Abandoned US20110024439A1 (en)

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US11/181,037 US7665281B2 (en) 2005-07-13 2005-07-13 Machine for making packaging with form-fit connection
US11/609,637 US20070138192A1 (en) 2005-07-13 2006-12-12 Packaging with subsequently molded form-fit connection
US12/900,337 US20110024439A1 (en) 2005-07-13 2010-10-07 Packaging with a subsequently molded form-fit connection

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US8158174B2 (en) 2002-09-27 2012-04-17 Kraft Foods Global Brands Llc Container for food products
US9617025B2 (en) 2012-02-29 2017-04-11 Gea Food Solutions Germany Gmbh Packaging machine having an exchangeable tool
JP2018188158A (en) * 2017-04-28 2018-11-29 凸版印刷株式会社 Paper container and its manufacturing method

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US20070138192A1 (en) * 2005-07-13 2007-06-21 Dietmar Send Packaging with subsequently molded form-fit connection
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US8158174B2 (en) 2002-09-27 2012-04-17 Kraft Foods Global Brands Llc Container for food products
US20100258569A1 (en) * 2005-10-25 2010-10-14 Kraft Foods Global Brands Llc Package having a reclose mechanism
US8088421B2 (en) 2005-10-25 2012-01-03 Kraft Foods Global Brands Llc Food package having a reclose mechanism
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US9617025B2 (en) 2012-02-29 2017-04-11 Gea Food Solutions Germany Gmbh Packaging machine having an exchangeable tool
JP2018188158A (en) * 2017-04-28 2018-11-29 凸版印刷株式会社 Paper container and its manufacturing method

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