EP3194139A1 - Appareil de moulage et procédé de fabrication d'un dispositif d'ouverture - Google Patents

Appareil de moulage et procédé de fabrication d'un dispositif d'ouverture

Info

Publication number
EP3194139A1
EP3194139A1 EP15753939.6A EP15753939A EP3194139A1 EP 3194139 A1 EP3194139 A1 EP 3194139A1 EP 15753939 A EP15753939 A EP 15753939A EP 3194139 A1 EP3194139 A1 EP 3194139A1
Authority
EP
European Patent Office
Prior art keywords
mold half
recess
package material
cavity
opening
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.)
Withdrawn
Application number
EP15753939.6A
Other languages
German (de)
English (en)
Inventor
Jonas BJÖRK
Anders Danielsson
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.)
Tetra Laval Holdings and Finance SA
Original Assignee
Tetra Laval Holdings and Finance 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
Priority claimed from SE1451051A external-priority patent/SE1451051A1/sv
Application filed by Tetra Laval Holdings and Finance SA filed Critical Tetra Laval Holdings and Finance SA
Priority claimed from PCT/EP2015/069099 external-priority patent/WO2016037818A1/fr
Publication of EP3194139A1 publication Critical patent/EP3194139A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/72—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials
    • 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
    • B65D5/741—Spouts for containers having a tubular body
    • B65D5/745—Spouts formed by deforming or tearing parts of the upper wall, combined with a deformation of a part of the body of the container
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
    • B29C45/14344—Moulding in or through a hole in the article, e.g. outsert moulding
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/34—Arrangement or construction of pull or lift tabs
    • 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
    • B65D5/70—Break-in flaps, or members adapted to be torn-off, to provide pouring openings
    • 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
    • B65D5/70—Break-in flaps, or members adapted to be torn-off, to provide pouring openings
    • B65D5/701—Tearable flaps defined by score-lines or incisions provided in the closure flaps of a tubular container made of a single blank
    • 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
    • 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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes
    • 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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/72—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials
    • B65D85/80—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials for milk
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14311—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
    • B29C2045/14327—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles anchoring by forcing the material to pass through a hole in the article
    • 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
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/22—Details
    • B65D77/30—Opening or contents-removing devices added or incorporated during filling or closing of containers
    • B65D77/32—Tearing-strings or like flexible elements

Definitions

  • the present invention relates to a molding apparatus.
  • the invention also relates to a method for manufacturing an opening device on a package material blank.
  • Package containers of the single use disposable type for liquid foods are often produced from a packaging material based on paperboard or carton.
  • a packaging material based on paperboard or carton.
  • Such container is for example be employed for aseptic packaging of liquid foods such as milk, fruit juices etc, marketed and sold for long term ambient storage.
  • the packaging material in such package container is typically a laminate compris ⁇ ing a bulk layer of paper or paperboard, outer, liquid- tight layers of thermoplastics, a gas barrier layer, most commonly an aluminum foil and finally one or more inside layers composed of one or several part layers, comprising heat-sealable adhesive polymers and/or heat- sealable polyolefins.
  • Package containers of this sort are normally produced on fully automatic packaging machines.
  • a continuous tube is formed from the web-fed packaging material; the web of packaging material is sterilized in the packaging machine, and the sterilized web of packag ⁇ ing material is maintained in a closed, sterile environ- ment in the subsequent step.
  • the web is folded and sealed longitudinally to form a vertical tube.
  • the tube is filled with the sterilized or sterile- processed food product, and is sealed and subsequently cut along equal- ly spaced cross sections to form pillow packs, which are then folded mechanically to form respective finished, e.g. substantially parallelepiped- shaped, package containers .
  • the package container have an opening device in order to facilitate consumer opening, many different types of opening devices including pull-tabs or molded opening devices, as for example discussed in WO03/095199 25 and WO/2009/000927.
  • the latter type of package is a high-volume (in terms of packages per time unit) and low-cost package (due to the properties of the packaging material) , and such opening devices might hamper the production speed and be detrimental for the cost of the package.
  • the term "Package material blank” or “blank” shall include an individual sheet or a blank in a package material web.
  • Such package material web may comprise one or more "package material blanks” arranged after each other in a continuous web, some of those blanks in different processing stages, i.e. on one blank in such web may comprise an opening device, while other blanks on the web might still be unprocessed.
  • package material refers to a package material blank or a continuous web of package material.
  • container package and packaging container refer to the same struc- ture.
  • material material laminate structure or packaging material refers to the package material blank.
  • cellulosic material may comprise one or more layers of paper, cardboard or any oth ⁇ er cellulosic fiber based material.
  • lateral direction and transversal direction refer to directions parallel to the surface of packaging material arranged between the mold halves. Consequently both directions span a plane parallel to the surface of the packaging material. More particular, the term “transversal direc ⁇ tion” refers to a direction, substantially parallel to a moving direction of the packaging material. The term “vertical direction” refers to a direction perpendicular to said aforementioned plane.
  • the invention proposes a molding apparatus for manufacturing an opening device on a package material, enabling efficient and flexible manufacturing of such devices.
  • the molding apparatus comprises two mold halves movable arranged opposite to each other.
  • a first mold half is facing a first side of the package material arranged be ⁇ tween the halves in operation of the apparatus.
  • the first mold half comprises a recess and a displaceable cover element covering partly the recess thereby forming a cavity having an opening within the first mold half.
  • the term cavity refers to hollow in the mold half having an opening, wherein the area of the opening is smaller than a parallel area within the cavity.
  • a recess in contrast thereto is more similar to a groove and generally does not comprise and undercut and the like.
  • the second mold half comprises a recess and is ranged with the recess at least partly facing the opening on the surface of the first mold half.
  • the cavity in the first mold half allows to mold an opening device on packaging material, which comprises a part, for instance the opening tab displaced to a surface of the package material.
  • the tab can therefore easily be grabbed by a consumer when opening the device.
  • the movable cover element acts as a cover to displace the melt from the package material surface.
  • the recess in the second mold half enables the melt to adhere to the surface of the package material forming a tight con ⁇ nection between the opening device and the package material .
  • As the mold halves can easily be replaced different shapes for the opening device are possible, allowing flexibility in selection of shapes and functionalities.
  • the melt can be injected into the mold halves from one side, thereby penetrating due to the injection pressure through the package material filling both, the recess and the cavity, respectively.
  • the se ⁇ cond mold half comprises an injector for injecting a melt material into the recess.
  • a surface of the cover element may form a planar surface with a surface of the first mold half facing the package material outside the recess in the first mold half.
  • planar surface is advantageous to prevent deformation in the package material when the mold halves are closed and pressure is exerted onto the package material.
  • the first mold half comprises a cavity, which may be formed by the movable cover element placed over a recess in the first mold half.
  • the cover element extends in a lateral direc- tion from a proximal end towards a distal end.
  • the cover element thereby does not cover the recess completely, but leaves an area empty, thereby forming the opening accessing the now formed cavity.
  • the distal end of the cover is therefore adjacent to the opening, later forming part of the opening device.
  • the distal end may comprise different shapes depending on the needs and requirements for the opening device.
  • the cover element may comprise an arc-like shape, a half-circle, a parabolic shape, linear shape and the like.
  • the cover element and the first mold half are relatively movable to each other in a vertical direction, perpendicular to a surface of the first mold half. This allows separating the cover from the mold half, thereby opening the cavity to release the recess.
  • the first mold half may be movable in a direction perpendicular to the first side of the package material, thereby separating the cover element from the cavity to re-form the recess.
  • the second mold half is movable in vertical direction, i.e. in a direction perpendicular to the second side of the package material. Consequently, one or more mold halves can be displaced from the surface of the package material during the operation of the apparatus.
  • the package material and the cover element may be movable relatively to each other in a direction substantially parallel to the package material.
  • the manufactured opening can be removed from the mold apparatus. It may be suitable in an embodiment to implement such move ⁇ ment away from a mounting element mounting the cover element movable to the first mold half.
  • Another aspect of the invention is related to a method for manufacturing an opening device.
  • Such method may comprise the step of providing a package material blank with a multilayer material structure having a layer of cellulosic material, one or more layers of plastic lami ⁇ nate and a penetration area.
  • the package material is arranged between two mold halves.
  • One of the mold half comprises a cavity with an opening on a first side of the package material blank, wherein an area of the opening facing a first side of the package material blank.
  • the opening is smaller than a pro ⁇ jection of an area of the cavity onto the first side.
  • a second mold half comprises a mold recess on a second side package material blank opposing the first side, wherein the opening partly overlaps the second mold half recess in said penetration area.
  • the second side of the package material is the side later being in contact with liquid food, when a package form the package material is formed and filled. Consequently the first side forms the outer side of a later formed package.
  • a plastic melt is injected into at least one of said cavity and said recess, wherein the melt, due to pressure being built up in said cavity or said recess, penetrates through penetration area and fills also at least said recess and cavity thereby forming an opening device.
  • a grip portion of said opening device in said cavity using the injected plastic melt is being formed.
  • the cavity of said first mold half is opened to release said grip portion and the said grip portion is removed from said cavity by a moving the first mold half and the package material blank relative to each other.
  • the opening of the cavity may be performed by moving the second mold half and the package material blank relative to each other in a direction perpendicular to the package material blank.
  • the first mold half may be separated into a cover portion and a recess portion by moving the recess portion rela- tive to the package material blank and the cover portion in a direction perpendicular to the package material and the cover portion.
  • the cover portion is moved relative to the grip portion in a direction substantially parallel to the first side as to withdraw the cover portion between the grip portion and the first side.
  • Figure 1 shows a first cut-view of a molding apparatus with the cavities formed according to an embodiment of the present invention
  • Figure 2 illustrates the first cut-view with the filled cavities according to the embodiment
  • Figure 3 illustrates a second cut-view of the embodiment of Figure 1 with the cavities filled
  • Figure 4 shows the second cut-view of the embodiment with separated mold-halves according to the invention
  • Figure 5 shows second cut-view of the embodiment with separated mold-halves and displaced packaging material according to the invention
  • Figure 6 illustrates a cut-view of an opening device according to an embodiment of the present invention
  • Figure 1 shows a molding apparatus for manufacturing the opening device according to the present invention.
  • the molding apparatus comprises a lower or first mold half 6A and an upper or second mold half 6.
  • the second mold half 6, for instance made of stainless steel, aluminum or other suitable material comprises a movable heated cone or similar arrangement 70 to press molten plastic or hot melt through channel 73 and nozzle 72 in ⁇ to a recess 43a.
  • Recess 43 is arranged in the lower side of second mold half 6 facing the package material blank 1. It resembles the structure of the second portion of the opening device.
  • the first mold 6A half is opposite the second half and the package material blank 1 is arranged between the two halves.
  • the first side of the package material 1 facing first mold half 6A is the outer surface of the package material, i.e. the side with the decor and print thereon.
  • the second side of the package material facing the second mold half 6 corresponds to the inner side of the later formed package and is in food contact later on.
  • Mold half 6A comprises two major portions, a mold portion 6B with a planar surface 60A facing package materi- al blank 1 and a movable cover 61.
  • Cover 61 is displace- able parallel to vertical direction VD.
  • the cover is arranged in a recess of mold portion 6B to form a cavity 42a for the grip element of the opening device.
  • cover 61 covers partly the recess of the mold portion to form cavity 42a.
  • Surface 610 of cover 61 is coplanar with surface 60A of mold portion 6B .
  • As a con ⁇ sequence a planar surface is formed, on which the package material is arranged upon.
  • the cover 61 extends from one end of the recess almost to the other end, leaving a small opening space 41a.
  • the distal end of cover 61 adjacent to said opening 41a is rounded and comprises an arc like shape, which corresponds to the shape for the opening device.
  • the distal end of cover element 6 can have different shapes depending on the re ⁇ quirements and needs.
  • Said opening space 41a resembles the first portion of the opening (see Figure 6), while cavity 42a is used for molding the grip portion.
  • cavity 42a is in its lateral dimension significant bigger than opening area 41a.
  • a projection of the planar dimension or area of cavity 42a onto the package materi ⁇ al is larger than the corresponding area of opening 41a, which corresponds basically to the area 3 of the package material blank.
  • the space 42a is called cavity, in contrast to space 43a in the second mold half 6 called a recess.
  • the package material blank 1 is moved along the transversal direction TD and arranged between the two mold halves covering the recess 43a of second mold half and opening 41a of the first mold half 6A. Both mold halves and the package material blank 1 are ar ⁇ ranged opposite each other in such way that opening 41a faces the recess 43 separated by the penetration area 3 of package material blank 1.
  • the molten plastic material 71 is injected into the recess 43a. This is shown in Figure 2. More particu ⁇ larly cone 70 is slightly retracted and molten plastic is pressed with high pressure through channels 73 and nozzle 72 into recess 43a. Recess 43a is filled with molten plastic forming a portion 43 of the opening device. Due to the high pressure, the plastic penetrates through the package material blank in area 3 and also fills cavity 42a. Part of the package material follows the shape of the recess and adjoins with the molten plastic. The melt in area 42a correspond to the grip portion of the opening device. During this procedure, the package material is not moved at all and both halves are pressed upon the package material.
  • Figure 3 illustrates the embodiment of the mold apparatus rotated around the axis X-X by 90 degrees.
  • the melt is injected through the nozzle 72 into the recess and has penetrated through the material.
  • the cover 61 extends in transversal direction and is coupled to a mounting element 62. Said mounting element is relatively movable to the mold half portion 6B in vertical direction .
  • Figure 4 illustrates another arrangement of the molding apparatus, after the melt operation has been performed and the melt is cooled down.
  • the first mold half 6 is displaced in vertical direction to separate the mold half from the package material 1.
  • the recess 43a is sep ⁇ arated from the mold opening device portion 43.
  • the cone 70 closes channels 73, as to prevent molten plastic from flowing through the nozzle 72.
  • the displacement or dis ⁇ tance between mold half 6 and package material 1 is larger than a height of portion 43.
  • the first mold half 6A is separated into the cover 61 and mold half portion 6B .
  • the cover 61 stays in contact with the surface 610 of the package material 1.
  • the mold half portion 6B is displaced, releasing recess 42A.
  • portion 6B is moved downwards along vertical direction VD . Thereby the molded grip portion 42 is separated from recess 42a.
  • Cover 61 provides stability for the package material to prevent undesired bending of ma ⁇ terial 1.
  • Figure 5 illustrates the final step of removing the molded opening device.
  • the package ma ⁇ terial is moved in transversal direction TD, away from the mounting element 62.
  • the cover 61 is withdrawn from the space between grip portion and package material blank forming the displaced grip portion.
  • mold half portion 6B can be moved upwards again to cover the recess 42A with the cover element 61 and likewise second mold half 6 displaced downwards.
  • a new package material blank 1 is fed into the apparatus.
  • Figure 6 illustrates the cut-view of an opening device manufactured by an apparatus of the foregoing.
  • Penetration area 3 comprises a smaller thickness than the surrounding area of package material blank 1.
  • the cellulosic layer has been removed and only one or more plastic layers and the aluminum layer remain in penetration area 3.
  • the penetration area 3 is larger than the material bridge 40 of the opening device penetrating area 3. Consequently the package material is arranged in the molding apparatus in such way, that area 3 is facing the opening 41a.
  • the pressure exerted by the mold halves of the molding apparatus is high enough to penetrate through the packaging material directly without having the need of a weakened penetration area 3.
  • the package material blank 1 is penetrated in the penetration area 3, ripping the material apart and bending a portion 1A of the package material blank upwards.
  • the bent material is attached to the first portion 41 on its surface.
  • the material bridge 40 adjoins and connects the first portion 41 with the second portion 43.
  • Second portion 43 does not only cover penetration area 3 completely, but also extends onto the surrounding areas on the lower side of the packaging material. It is rigidly attached to the package material facilitating the consumer opening area 2 to prevent the plastic material of the second portion just to be torn of, when a consumer pulls on the grip portion 42.
  • the first portion 41 is attached with its proximal end 41b to the material bridge 40 and with its distal end 41a to the grip portion 42. More particular, first por ⁇ tion 41 bends from its proximal end towards the consumer are 2 and its distal end.
  • the opening device is made in one piece, e.g.
  • first portion 41 merges on the one side into the material bridge 40 and on the other side into the grip portion 42.
  • the grip portion 42 is displaced from the surface of blank 1 by a distance D (not shown) .
  • Said distance can be in the range of less than a millimeter to up to some millimeter. For example it can be in the range of 1,5 mm to 3,5 mm and particular 2,5 mm. It de- pends on the protrusion of the first portion above the surface of package material blank 1.
  • first portion comprises a circular shape such that the surface of the distal end 41a is substantial perpendicular to the surface of blank 1.
  • the circular shape can be such that a focal or center point F lies in the space 61 between the grip portion and the surface of the blank 1.
  • other shapes like arcs, parabolic shapes and the like can be used.
  • FIG. 7 illustrates the various method steps for manufacturing an opening device according to the present invention.
  • the package material is moved be- tween the two mold halves.
  • the package material blank comprises a multilayer material structure having a layer of cellulosic material, one or more layers of plastic laminate and a penetration area.
  • the first mold half comprising the cavity with an opening on a first side of the package material blank.
  • Said cavity is formed by moving a cover portion relatively to a recess portion to partly cover a recess in the recess portion.
  • the cover portion is arranged such that it forms a co- planar surface with the surface of the recess portion 6A facing the package material blank.
  • An area of the opening facing the package material blank is smaller than a projection of an area of the cavity onto the blank.
  • a second mold half with a mold recess is then arranged on the other side of the package material blank, whereby the opening area partly overlaps the recess of the second mold half mold half recess in said penetration area.
  • the plastic mold is injected in step S4 into the recess or the cavity, for example it is injected into the re ⁇ cess at high pressures, thereby penetrating through the material in the overlapping areas.
  • the molten plastic or injection material fills the cavity and the recess and is at least partly hardened subsequently to form the opening device.
  • step S5 the cavity is opened to release the grip portion and the grip portion is removed.
  • the opening can be achieved in reversed order as step S3 and S2, respectively.
  • the recess portion may be moved downwards away from the package material blank, while the cover is kept facing the package material plank.
  • the package material blank may be moved in a longitudinal direction.

Abstract

L'invention concerne un appareil de moulage pour la fabrication d'un dispositif d'ouverture sur un matériau d'emballage (1), ledit appareil comportant une première moitié de moule (6A) et une seconde moitié de moule (6) agencée à l'opposé de la première moitié de moule et ayant un creux (43a). La première moitié de moule comporte un creux et un élément de couverture déplaçable (61), recouvrant en partie le creux, ce qui permet de former une cavité (42a) ayant une ouverture (41a) à l'intérieur de la première moitié de moule (6A), l'ouverture (41a) étant agencée au moins en partie à l'opposé du creux (43a) de la seconde moitié de moule (6).
EP15753939.6A 2014-05-07 2015-08-20 Appareil de moulage et procédé de fabrication d'un dispositif d'ouverture Withdrawn EP3194139A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE1450541 2014-05-07
SE1451051A SE1451051A1 (sv) 2013-12-30 2014-09-11 Molding apparatus and method for manufacturing an opening device
PCT/EP2015/069099 WO2016037818A1 (fr) 2014-09-11 2015-08-20 Appareil de moulage et procédé de fabrication d'un dispositif d'ouverture

Publications (1)

Publication Number Publication Date
EP3194139A1 true EP3194139A1 (fr) 2017-07-26

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ID=53181251

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Application Number Title Priority Date Filing Date
EP15722951.9A Active EP3140115B1 (fr) 2014-05-07 2015-04-29 Structure stratifiee pour materiau d'emballage
EP15753939.6A Withdrawn EP3194139A1 (fr) 2014-05-07 2015-08-20 Appareil de moulage et procédé de fabrication d'un dispositif d'ouverture

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP15722951.9A Active EP3140115B1 (fr) 2014-05-07 2015-04-29 Structure stratifiee pour materiau d'emballage

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US (1) US20170183120A1 (fr)
EP (2) EP3140115B1 (fr)
JP (1) JP2017514765A (fr)
CN (1) CN106458364B (fr)
DK (1) DK3140115T3 (fr)
ES (1) ES2709385T3 (fr)
MX (1) MX2016014009A (fr)
PL (1) PL3140115T3 (fr)
RU (1) RU2683828C2 (fr)
TR (1) TR201900935T4 (fr)
WO (1) WO2015169656A1 (fr)

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WO2016102151A1 (fr) * 2014-12-22 2016-06-30 Tetra Laval Holdings & Finance S.A. Matériau d'emballage et récipient d'emballage formé au moyen dudit matériau
TR201909404T4 (tr) * 2015-02-09 2019-07-22 Tetra Laval Holdings & Finance Ambalaj malzemesi ve söz konusu malzeme ile oluşturulan ambalaj kabı.
ES2876028T3 (es) 2016-06-17 2021-11-11 Tetra Laval Holdings & Finance Sistema de apertura para un recipiente, su método de fabricación y recipiente que comprende el sistema de apertura
WO2017220692A1 (fr) 2016-06-23 2017-12-28 Tetra Laval Holdings & Finance S.A. Matériau d'emballage en feuille pour produire des paquets scellés de produits alimentaires pouvant être versés
RU2742121C1 (ru) * 2017-07-05 2021-02-02 Тетра Лаваль Холдингз Энд Файнэнс С.А. Способ изготовления системы для открывания контейнера
AT520340B1 (de) * 2017-08-29 2019-06-15 Constantia Teich Gmbh Verpackungsfolie mit Schwächungslinie und Stützlack
USD980066S1 (en) * 2020-11-16 2023-03-07 Tetra Laval Holdings & Finance S.A. Lid for packaging

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Also Published As

Publication number Publication date
JP2017514765A (ja) 2017-06-08
EP3140115A1 (fr) 2017-03-15
ES2709385T3 (es) 2019-04-16
TR201900935T4 (tr) 2019-02-21
PL3140115T3 (pl) 2019-05-31
DK3140115T3 (en) 2019-03-11
EP3140115B1 (fr) 2018-11-14
RU2683828C2 (ru) 2019-04-02
MX2016014009A (es) 2017-01-11
US20170183120A1 (en) 2017-06-29
RU2016143533A (ru) 2018-06-13
WO2015169656A1 (fr) 2015-11-12
RU2016143533A3 (fr) 2018-10-26
CN106458364B (zh) 2019-01-04
CN106458364A (zh) 2017-02-22

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