Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
  • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
  • B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
• • 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
  • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
  • B65D5/42—Details of containers or of foldable or erectable container blanks
  • B65D5/72—Contents-dispensing means
  • B65D5/74—Spouts
  • B65D5/746—Spouts formed separately from the container
  • B65D5/747—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall
  • B65D5/748—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall a major part of the container wall or membrane being left inside the container after the opening
• • 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
  • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
  • B29C53/36—Bending and joining, e.g. for making hollow articles
  • B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
  • B29C53/48—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
  • B29C53/50—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively using internal forming surfaces, e.g. mandrels
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
  • B31B50/74—Auxiliary operations
  • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
  • B31B50/84—Forming or attaching means for filling or dispensing contents, e.g. valves or spouts
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B38/00—Ancillary operations in connection with laminating processes
  • B32B38/04—Punching, slitting or perforating
  • B32B2038/042—Punching
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B38/00—Ancillary operations in connection with laminating processes
  • B32B38/10—Removing layers, or parts of layers, mechanically or chemically
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
  • Y10T156/10—Methods of surface bonding and/or assembly therefor
  • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
  • Y10T156/1062—Prior to assembly
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
  • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]

Definitions

• the invention relates to a method for producing a composite film for a tubular bag according to the preamble of claim 1. Furthermore, the invention relates to a tubular bag using a composite film produced by a method according to the invention.
• a packaging container which consists of a multi-layered material comprising an inside and outside coated cardboard.
• the outer coating of the cardboard is recessed in the region of an opening device.
• the opening device is connected by means of an additional adhesive layer with the outer coating of the carton.
• a composite film suitable for use with an opening device on a tubular bag is known from WO 2007/149231 A2.
• a hole for the opening device is punched out, which is covered by the inside of the packaging container formed from the composite film with an additional, serving as a barrier layer material layer in the form of a packaging material strip.
• the opening means is brought into coincidence with the punched hole and connected via an annular region with the packaging material strip.
• the opening device has a cutting device in the form of cutting teeth, which perforates or separates the additional material layer for opening the packaging container, in order for example to allow a liquid to be poured out of the packaging container designed as a tubular bag.
• Such packaging containers in the form of tubular bags are produced on so-called tubular bag machines.
• the method using the last-mentioned composite film is relatively complicated due to the required punching of the packaging material web and subsequent sealing of the barrier layers, since an additional punching device and a sealing device are required.
• it can be problematic in that case of a functional impairment of the punching device or on the sealing device of the entire production or filling process of
• the present invention seeks to provide a method for producing a composite film for a tubular bag according to the preamble of claim 1 such that this economical production of the composite film maximum flexibility with respect to the materials used for the composite film and a high-precision design of the recesses allows to ensure the highest possible barrier protection and process reliability in the production of the composite film.
• This object is achieved in a composite film having the features of claim 1.
• the invention is based on the idea, the composite film by the use of two, interconnected
• Form layer structures of which one layer structure contains the recesses for opening devices, wherein the layers of the composite film are formed as flexible layers.
• the recesses can be produced with high precision and relatively low cost by a punching or laser process.
• the at least one further layer has at least one first carrier layer.
• the invention also encompasses a tubular bag having an opening device and a composite film produced by a method according to the invention, wherein the opening device is connected in alignment with the recess of the composite film, and wherein the connection between the opening device and the composite film is formed as an ultrasonic welding connection or as a heat-sealing connection ,
• Such a tubular bag can be relatively inexpensively manufactured due to the relatively simple manufacturing device by dispensing with punching devices for forming through holes and additional, the barrier layer forming packaging strips and has good barrier properties.
• such a connection method between the opening device and the composite film has the advantage that it does not require any additional auxiliary materials, such as adhesive, and is relatively easy to control in terms of manufacturing technology.
• FIG. 1 is a simplified side view of a filled with a filling tube bag with an opening device
• FIG. 5 is a simplified representation to explain the manufacturing process of a composite film for the production of tubular bags according to the Fig. 1, 6 shows a packaging machine for the manufacture of filled with a filling tubular bags in a simplified representation,
• Fig. 1 1 is a simplified representation for explaining the manufacturing method of a first alternative composite film
• Fig. 14 is a simplified illustration for explaining the manufacturing method of a second alternative composite film.
• Fig. 1 a designed as a tubular bag 1 packaging container is shown in simplified.
• the tubular bag 1 has an upper transverse seam 2, a lower transverse seam 3 and at least one longitudinal seam 4. It can also be provided that in the bottom region or in the head region of the tubular bag 1, this is formed with a folded bottom or a folded head closure, for example, to enable a stability of the tubular bag 1 or a specific visual appearance.
• an opening device 10 is disposed on the outer wall 5 of the tubular bag 1.
• the opening device 10 which preferably consists of plastic and is produced by injection molding, has a main body 1 1 which is connected to a removable cover closure 12.
• the screwable cover closure 12 cooperates with cutting teeth 13 which, upon rotation of the cover closure 12, come into operative connection with the outer wall 5 of the tubular bag 1 in order to sever it or form a passage and thus remove product located in the tubular bag 1 7, eg a liquid product 7 such as milk, fruit juices or the like.
• the base body 1 1 has a circumferential connection flange 14, which is used to attach the opening device 10 to the
• Tube bag 1 is used.
• LDPE low density polyethylene
• the LDPE sealing layer 16 is followed by an aluminum layer 17.
• an adhesive layer 18a is used instead of the MDPE layer 18.
• the second layer structure 22 comprises a primer layer 23, a printing layer 24 and a carrier layer 25.
• the second layer structure 22 is connected to the first film layer structure 19 by means of the manufacturing device 20 shown in FIG. 5 to the laminate composite film 15 or 15a and to a packaging material roll 28 wound.
• the second layer structure 22 in each case has a recess 30, 30a in the regions in which the opening devices 10 are arranged during production of the tubular bag 1.
• the recesses 30, 30a are already produced or formed in the second layer structure 22 during the production process of the second layer structure 22 by a corresponding production device, in particular by a punching device or a laser beam cutting device (not shown).
• the recesses 30 are formed at least in the region of the carrier layer 25, since the carrier layer 25 is made of OPP (oriented polypropylene), PET or a mechanically similar loadable material or has such a strength / toughness that the cutting teeth 13 the opening device 10 this (usually) can not cut through.
• the packaging material roll 28 with the rolled up laminate composite film 15, 15a already has the recesses 30 for the opening devices 10, it being essential that the arrangement of the recesses 30 on the laminate composite film 15, 15a preferably at certain, uniform intervals corresponding to Formats made of the laminate composite film 15, 15a tubular bags 1 takes place.
• a waste-free processing of the packaging material roll 28 is made possible.
• the recess 30 has a size which is smaller than the size or the diameter of the connecting flange 14 of the opening device 10.
• the connecting flange 14 with its underside with the carrier layer 25th , which forms the later outer wall 5 of the tubular bag 1 connected.
• the bonding is preferably carried out by means of an ultrasonic welding device or a heat-sealing device, not shown. This connects the connecting flange 14 of the opening device 10 with a particular radially circumferential connecting seam such that the connecting flange 14 is sealed to the carrier layer 25.
• the opening device 10 or the base body 11 or the cutting edges 13 are not yet in operative connection with the first film layer structure 19. This takes place only when opening the tubular bag 1 for removal of the product. 7
• the recess 30a has a size or a diameter which is greater than the size of the connection flange 14 of the opening device 10a.
• the opening device 10a is applied with its connection flange 14a on the MDPE layer 18 or connected thereto, preferably by an ultrasonic welding device, not shown.
• FIG. 6 shows in simplified form a packaging installation 32 for producing tubular bags 1 from a packaging material roll 28 and filling the tubular bags 1.
• the packaging system 32 has transport rollers 33, 34, by means of which the packaging material roll 28 is unrolled. Further, a plurality of dancer rollers 36 having compensating means 37 can be seen, by means of which a balance between a cyclic advantage and a continuous preference of the material of the packaging material roll 28 in different areas of the packaging machine 32 is enabled.
• the laminate composite film 15 reaches the area of a machine housing 38 of the packaging machine 32, wherein a sterile atmosphere or sterile conditions prevail within the machine housing 38.
• a sterilizing bath 39 is arranged, in which, for example, liquid hydrogen peroxide for sterilizing the laminate composite film 15 is located. Subsequently, the laminate composite film 15 is dried by means of a drying device 40 and fed to a vertical tubular bag machine 42.
• the tubular bag machine 42 has a forming shoulder 43 and a forming and
• Filling tube 44 which is coupled to a storage, not shown, for the product to be filled 7.
• the molding and filling pipe 44 penetrates the machine housing 38 in the region of an outlet 45. Unstable conditions prevail in the area of the packaging machine 32 from the region of the outlet 45. A lower region of the molding and filling pipe 44 can still be seen
• the application device 50 not shown in detail substantially comprises the already mentioned ultrasonic welding device and is preferably coupled to a storage magazine for the opening means 10. It is essential that the application device 50 is still arranged in the region of the forming and filling tube 44, so that when attaching the opening means 10 on the outer wall 5 of the subsequent tubular bag 1, the forming and filling tube 44 forms a counter-holder for the opening device 10 to to allow the required contact pressure of the connecting flange 14 on the outer wall 5. Furthermore, it is essential that the application device 50 is located in the non-sterile area. This allows a direct access (in case of possible) malfunctions of the application device 50, without affecting the sterility of the upstream region of the packaging system 32. Furthermore, there is no need to sterilize the opening devices 10.
• a cross-seam-sealing device 51 which has two cross-seam-sealing jaws 52 and 53, which can be moved relative to one another, as well as separating knives (not shown) for separating one tube in each case.
• bag 1 of the packaging material hose. It is essential in the production process of the tubular bag 1 that the application device 50 align the opening devices 10 with the recesses 30, 30a such that they reach the recesses 30, 30a in aligned covering.
• FIGS. 7 to 11 show the manufacturing process of a laminate composite film 15b, which may alternatively be used instead of the laminate composite films 15, 15a.
• the carrier layer 25a made of PET or OPP is printed on its rear side with the printing layer 24a having a printed image.
• the print layer 24a is joined to a mechanically loadable layer 26, for example of polyamide (PA), by an adhesive or extrusion lamination process.
• PA polyamide
• the recesses 30, 30a are formed in the second layer structure 22a.
• the second layer structure 22a produced in this way is then connected to a prefabricated intermediate layer 27 in accordance with FIG. This is done by extrusion lamination.
• the intermediate layer 27 comprises, for example, polyester, polyamide, polypropylene with or without barrier coatings, mono- or multilayer films which are produced by blow molding or casting or else an aluminum foil having a thickness of between 5 ⁇ m and 15 ⁇ m.
• the intermediate layer 27 on the side opposite the second layer structure 22a is provided with the sealing layer 16a, generally made of polyethylene, required for forming the tubular bag 1.
• the sealing layer can be co-extruded 16a with different polyethylene densities to control the adhesion and sealing properties are coated.
• the backing layer 25a comprising PET or OPP is printed on its rear side with the printing layer 24a having a printed image.
• the carrier layer 25a is deposited on the printing layer 24a.
• the prefabrication also includes the formation of the recesses 30, 30a.
• the layer 29 can have, among other things, the barrier function required for product protection.
• the printing layer 24a is provided with the sealing layer 16b.
• This is preferably done by means of a cast-extrusion coating.
• slot dies are used to produce the sealing layer 16b.
• the polymer melt strikes cooling rollers and the carrier material (carrier layer 25a and pressure layer 24a) shortly after the nozzle exit, which immediately freezes the molecular chain structure and keeps it short. This results in a very good cuttability, which facilitates the opening of the tubular bag 1 by the opening device 10, 10a.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Bag Frames (AREA)
• Containers And Plastic Fillers For Packaging (AREA)
• Laminated Bodies (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=44351693

Family Applications (1)

Country Status (6)

Families Citing this family (4)

Family Cites Families (15)

• 2010
  • 2010-05-27 DE DE102010029357A patent/DE102010029357A1/de not_active Withdrawn
• 2011
  • 2011-05-26 CN CN2011800259129A patent/CN102917957A/zh active Pending
  • 2011-05-26 EP EP11721535.0A patent/EP2576365A1/de not_active Withdrawn
  • 2011-05-26 WO PCT/EP2011/058630 patent/WO2011147908A1/de active Application Filing
  • 2011-05-26 BR BR112012029770A patent/BR112012029770A2/pt not_active IP Right Cessation
  • 2011-05-26 US US13/698,939 patent/US20130065003A1/en not_active Abandoned

Non-Patent Citations (1)

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