EP4316997A2 - Verpackungsanordnung für im wesentlichen flache produkte - Google Patents

Verpackungsanordnung für im wesentlichen flache produkte Download PDF

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Publication number
EP4316997A2
EP4316997A2 EP23188603.7A EP23188603A EP4316997A2 EP 4316997 A2 EP4316997 A2 EP 4316997A2 EP 23188603 A EP23188603 A EP 23188603A EP 4316997 A2 EP4316997 A2 EP 4316997A2
Authority
EP
European Patent Office
Prior art keywords
sheet
heat
product
sheets
products
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.)
Pending
Application number
EP23188603.7A
Other languages
English (en)
French (fr)
Other versions
EP4316997A3 (de
Inventor
Gianni FRANGELLA
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.)
Sacmi Packaging & Chocolate SpA
Original Assignee
Sacmi Packaging & Chocolate SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sacmi Packaging & Chocolate SpA filed Critical Sacmi Packaging & Chocolate SpA
Publication of EP4316997A2 publication Critical patent/EP4316997A2/de
Publication of EP4316997A3 publication Critical patent/EP4316997A3/de
Pending legal-status Critical Current

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Classifications

    • 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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/06—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths
    • B65B11/38—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a combination of straight and curved paths
    • B65B11/40—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a combination of straight and curved paths to fold the wrappers in tubular form about contents
    • B65B11/42—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a combination of straight and curved paths to fold the wrappers in tubular form about contents and then to form closing folds of similar form at opposite ends of the tube
    • 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
    • B65B25/00—Packaging other articles presenting special problems
    • B65B25/005—Packaging other articles presenting special problems packaging of confectionery
    • 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
    • B65B49/00—Devices for folding or bending wrappers around contents
    • B65B49/02—Fixed or resiliently-mounted folders, e.g. non-driven rollers
    • B65B49/04—Ploughs or plates with inclined slots or opposed inclined edges
    • 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
    • B65B49/00—Devices for folding or bending wrappers around contents
    • B65B49/06—Resilient folders, e.g. brushes, diaphragms
    • 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
    • B65B49/00—Devices for folding or bending wrappers around contents
    • B65B49/14—Folders forming part of, or attached to, conveyors for partially-wrapped articles

Definitions

  • the present invention relates to a packaging assembly, for substantially flat products, in particular chocolate tablets or bars, snacks, chocolates, candy, biscuits, wafers and the like.
  • the packaging of this type of products is generally constituted by a primary, wrapping layer (in direct contact with the surfaces of the product) and a secondary, covering layer (generally, but not exclusively, made of paper or cardboard).
  • the primary layer is generally made with sheets of aluminum (or sheets constituted by aluminum and other materials), although recently the increasing adoption of polymeric and/or biopolymeric sheets has been seen (more generally sheets of biodegradable and/or compostable materials and/or materials with similar characteristics).
  • This first, wrapping layer is juxtaposed against all the walls of the product and therefore covers it without modifying its space occupation.
  • the heat-sealing units present in the assembly must be designed (or at least adjusted/calibrated) as a function of the characteristics of the sheet used, since different materials require different operating temperatures and different compacting pressures of the flaps to be heat-sealed, and all extending over different time intervals.
  • the aim of the present invention is to solve the above-mentioned drawbacks, by providing a packaging assembly for substantially flat products that is versatile, i.e. adapted to wrap a product in a packaging constituted by a primary, wrapping layer made with sheets that are indifferently of aluminum (or comprise aluminum), or polymeric, paper, biopolymeric and the like.
  • an object of the invention is to provide a packaging assembly for substantially flat products that offers high productivity, independently of the type of wrapping sheets used.
  • Another object of the invention is to provide a packaging assembly for substantially flat products that makes it possible to effectively and stably wrap the product in the respective wrapping sheet, whatever the type and material thereof.
  • Another object of the invention is to provide a packaging assembly for substantially flat products that allows a manipulation of the product that is suitable to guard against any damage thereto, even at high operating speeds.
  • Another object of the invention is to provide a packaging assembly for substantially flat products that is of compact type and is adapted to be inserted in a line for executing, in sequence, the wrapping of a product in a packaging constituted by a primary, wrapping layer and a secondary, covering layer.
  • Another object of the present invention is to provide a packaging assembly for substantially flat products that is of low cost, easily and practically implemented, and safe in use.
  • a packaging plant for substantially flat products of the type comprising a conveyance line for products which arrive from an external supply device, characterized in that it comprises an assembly according to at least one of the preceding claims, arranged so as to operate on said conveyance line, there being an apparatus for supplying wrapping sheets upstream of said assembly.
  • a method for packaging substantially flat products of the type chosen among flat products in particular chocolate tablets or bars, snacks, chocolates, candy, biscuits, wafers and the like, which comprises:
  • the reference numeral 1 generally designates a packaging assembly for substantially flat products A.
  • the packaging assembly 1 is adapted to be installed to operate on a conveyance line 2 for products A: this line will receive the products from a magazine or from the machine that makes them.
  • the packaging assembly 1 comprises an apparatus for supplying wrapping sheets B which is arranged along the conveyance line directly upstream of the assembly 1.
  • the assembly 1 comprises a carousel 4 provided with a plurality of radial expansions 5 which are provided, at their terminal part, with grip means 6 which can move between a passive, open configuration, in which their terminal edges are arranged like a hopper for the folding and juxtaposition of a wrapping sheet on respective surfaces of a product A that is pushed inside them by the conveyance line 2 (as can be seen for the purposes of non-limiting example in Figures 5 and 6 ), and an active, clamping configuration, in which they clamp the product A which is partially covered by the sheet B and is arranged in a seat delimited by them.
  • the product A in its transfer path from the conveyance line 2 to the grip means 6, will encounter the sheet B, pulling it inside the grip means 6.
  • the particular open configuration of the grip means 6 allows the entry of the product A, on the surfaces of which (in particular its edge directed toward the seat inside the grip means 6 and the two mutually opposite faces of the product that are contiguous with that edge) the sheet B is extended and juxtaposed, because the grip means 6, in this configuration, define an opening that is slightly larger than the thickness of the product A, so forcing the sheet B to follow its shape.
  • the assembly 1 further comprises at least one heat-sealing station 7, 8, which is arranged facing and proximate to the trajectory of the terminal edges 9 of the grip means 6 arranged on the radial expansions 5.
  • the at least one heat-sealing station 7, 8 is designed for the stable coupling of superimposed flaps C of the sheet B, which is partially juxtaposed against the product A, which protrude with respect to these terminal edges 9 (this stable coupling by heat-sealing the flaps C is illustrated by way of non-limiting example in the accompanying Figures 5 and 7 ).
  • the assembly 1 according to the invention can conveniently comprise two heat-sealing stations 7, 8 which are arranged at a mutual angular distance that is equal to an angle defined between distinct expansions 5 of the carousel 4.
  • each heat-sealing station 7, 8 will clamp the respective superimposed flaps C of the sheet B, transferring a predefined quantity of heat to them; even if the clamping time ensured by the first station 7 were insufficient to ensure a perfect and stable bonding of the flaps C (owing to the high operating speed of the assembly 1), such flaps C would subsequently be clamped by the second station 8, which could complete the welding process thereof.
  • thermo-mechanical treatment for the mutual heat-sealing thereof that lasts for the sum of the clamping times thereof in the first station 7 and in the second station 8 (to ensure that an optimal mutual heat-sealing thereof is safely achieved).
  • the grip means 6 can advantageously comprise respective abutment units 10, 11 of a type chosen among folding units 10 and at least partially deformable elements 11 for the elastic forcing of the sheet B onto at least one surface of the product A.
  • the folding units 10 will be shaped like the jaws of a clamp that, in the clamped configuration, delimit a seat with shape and dimensions complementary to those of the product A.
  • the transition from the open configuration to the clamped condition will cause the folding of one of the protruding flaps C of the sheet B until it is superimposed on the other, by virtue of a tooth 12 protruding from the external end (looking along a radial direction, in the operational mounting arrangement) of the folding unit 10, which will be superimposed on the outer lateral surface (again, along the same radial reference, referring to the carousel 4) of the product A (in so doing folding thereon the flap of the sheet B, until it is juxtaposed against the other flap).
  • the at least partially deformable elements 11 are constituted by brushes, the bristles of which are directed toward the inside of the seat (with shape and dimensions complementary to those of the product A) delimited by the grip means 6.
  • heat-sealing stations 7, 8 can profitably comprise mutually opposite pairs of jaws (respectively 7a, 7b and 8a, 8b), of which at least one can move, which are provided at a corresponding terminal end thereof with complementary platelets which are associated with respective heaters.
  • the jaws 7a, 7b; 8a, 8b can advantageously, for a predefined length of time, clamp the superimposed flaps C of the sheet B that protrude from the terminal edges of the grip means 6 by applying a predefined pressure: such clamping will be performed while at least one of the end platelets of one of the jaws 7a, 7b; 8a, 8b is conveniently kept at a predefined temperature by the respective heater. In this manner it will be possible to ensure the correct heat-sealing of the superimposed flaps C of the sheet B (by virtue of the succession of the two steps of heat-sealing thereof which are performed in the first station 7 and in the second station 8).
  • the radial expansions 5 are six in number, arranged substantially at 60° from each other.
  • a first expansion 5 will conveniently be aligned with the conveyance line 2 at the apparatus 3 for supplying wrapping sheets B
  • a second expansion 5, contiguous and successive to the first one will be positively aligned with a first heat-sealing station 7
  • a third expansion 5, contiguous and successive to the second one will be usefully aligned with a second heat-sealing station 8
  • a fourth expansion 5 will be aligned with the conveyance line 2 for the dispensing, and delivery thereon, of the packaged product A.
  • the further two expansions 5 will be on an opposite side of the assembly 1 according to the invention, along which no operations will be performed on the products A (the possibility is not ruled out of adopting services for cleaning, for example by way of air jets, the two expansions 5 that are located in this inactive zone of the assembly 1).
  • the assembly 1 according to the invention can comprise, downstream of the carousel 4, at least one folding unit for respective portions of the wrapping sheet B of a type chosen among a fixed folding lamina 13 (shown for the purposes of non-limiting example in the accompanying Figures 1 , 2 , 5 , 8 and 9 ), which faces and is proximate to the trajectory of the outer edge of the products A (held by the grip means 6) for the folding of the superimposed and heat-sealed (in the stations 7, 8) flaps of the sheet B, and movable folding plates 14 which face and are proximate to mutually opposite tubular fronts D of the sheet B which is folded around the product (shown for the purposes of non-limiting example in the accompanying Figures 5 , 10 , 11 , 12 and 13 ).
  • Such movable folding plates 14 will be configured to juxtapose the mutually opposite tubular fronts D of the sheet B which is folded around the product A (for example by sliding parallel and proximate to the surface of the product A that is delimited within such tubular front, so as to fold such tubular front along it); these movable folding plates 14 can profitably be associated with respective heat-sealing units 15 which, abutting against such mutually opposite and juxtaposed tubular fronts D of the sheet B, will heat-seal them together, thus completing the closure of the packaging around the product A (isolating it from the outside environment).
  • the protection of the present invention also extends to a packaging plant for substantially flat products A that comprises a conveyance line 2 for products A which arrive from an external supply device, and an assembly 1 of the type described up to this point which is arranged so as to operate on the conveyance line 2.
  • the packaging assembly 1 will comprise, upstream, an apparatus 3 for supplying wrapping sheets B.
  • Such plant will be adapted to package products A of the flat type, in particular chocolate tablets or bars, snacks, chocolates, candy, biscuits, wafers and the like.
  • the wrapping sheets B used in this plant will be made of a material chosen among aluminum sheets, sheets comprising aluminum, sheets comprising biopolymeric material, sheets comprising polymeric material, sheets comprising paper, sheets comprising biodegradable material and sheets comprising compostable material.
  • the present invention also extends its protection to include a method for packaging substantially flat products A of the type chosen among flat products, in particular chocolate tablets or bars, snacks, chocolates, candy, biscuits, wafers and the like, which entails the execution of a series of steps in sequence.
  • a third step the method continues by heat-sealing the flaps C, which is performed by means of at least one heat-sealing station 7, 8 which is designed to clamp these flaps C by means of jaws, respectively 7a, 7b; 8a, 8b, which are clamped with a predefined pressure applied for a predefined time and which have at least one surface kept at a predefined temperature.
  • a fourth step the method continues by folding the heat-sealed flaps C onto the outer surface of the product A which is covered by the sheet B, by means of a folding lamina 13 which is substantially tangent to the edge of the product A from which these heat-sealed flaps C protrude.
  • a fifth step comprises the juxtaposition of the tubular fronts D of the sheet B (which is wrapped around the product A), by means of a folding unit which is tangent to the mutually opposite fronts D of each product A.
  • the method can further comprise a sixth step of mutually heat-sealing the tubular fronts D of the sheet B which were previously juxtaposed.
  • the assembly 1 receives the product A (for example a bar of chocolate) in the seat defined inside the grip means 6 of the first radial expansion 5, facing the conveyance line 2, said product A has already encountered the wrapping sheet B (which was previously cut to size by the corresponding apparatus 3).
  • the product A, thus wrapped, is brought by the carousel 4 (via its successive rotations along predefined angles) into the two successive heat-sealing stations 7, 8, in which the heat-sealing of the juxtaposed flaps C of the sheet B occurs (the stations 7, 8, with reference to a geometric arrangement corresponding to a clock face, will be located at 11 o'clock and at 1 o'clock).
  • the superimposed flaps C of the heat-sealed sheet B will then be folded onto the base of the product B by means of the fixed folding lamina 13.
  • the transfer carousel 4 results in a change of the fixed line of the product A, going from its top, or "high fixed line” (which in a bar of chocolate corresponds to the shaped part of the bar), to its bottom, or "low fixed line” (which in a bar of chocolate corresponds to the smooth part of the bar).
  • the present invention furthermore ensures an optimal management of thermal inertia: via the introduction of parametrized cams (the activation of the heat-sealing stations 7, 8, the rotation of the carousel 4, and the actuation of the grip means 6 are obtained by virtue of actuators constituted by controlled motors, generally brushless motors), it is possible to keep the parameters constant for ideal heat-sealing (constant length of time and constant temperature) as the speed of the plant and of the assembly 1 varies.
  • a traditional (exclusively mechanical) machine by adjusting the temperature of the heat-sealing units to a given value (for example 100°C) that ensures an optimal heat-sealing at a certain machine speed (for example 200 products A packaged per minute), when the machine is then operated at a lower speed (for example 100 products A packaged per minute) the heat-sealing time doubles and, as a consequence, in order to maintain the same optimal heat-sealing conditions, it is necessary to reduce the temperature of the heat-sealing units with a non-negligible temporal transient owing to thermal inertia (in the meantime the plant continues to package products at the start of the cycle), or physically remove the units from the product, by introducing an additional mechanical apparatus (so as to decrease the length of time during which the heat-sealing is performed).
  • a given value for example 100°C
  • the present invention allows to keep the optimal heat-sealing conditions constant, with no transients when changing from one speed to another (transients that are, incidentally, extremely short; in the order of 1 to 1.5 seconds).
  • the present invention makes it possible to considerably reduce the number of blister packsA that are potentially to be rejected.
  • the present invention solves the drawbacks described previously, by providing a packaging assembly 1 for substantially flat products A that is of versatile type, i.e. adapted to wrap a product in a packaging constituted by a primary, wrapping layer made with sheets B that are indifferently of aluminum (or comprise aluminum), or polymeric, paper, biopolymeric and the like.
  • the assembly 1 according to the invention is highly productive (with operating speeds of the order of 250 products A packaged per minute, although the possibility is not ruled out of raising this value), independently of the type of wrapping sheets B used.
  • the assembly 1 according to the invention makes it possible to effectively and stably wrap the product A in the respective wrapping sheet B, whatever the type and material thereof.
  • the assembly 1 according to the invention allows a manipulation of the product A that is suitable to guard against any damage thereto, even at high operating speeds.
  • the assembly 1 according to the invention is of compact type and is adapted to be inserted in a line 2 for executing, in sequence, the wrapping of a product in a packaging constituted by a primary, wrapping layer and a secondary, covering layer.
  • the assembly 1 according to the invention is easily and practically implemented and is of low cost: the assembly 1, the plant and the method according to the invention therefore constitute innovations that are certain to be safe in use.
  • the materials employed, as well as the dimensions, may be any according to requirements and to the state of the art.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
EP23188603.7A 2022-08-03 2023-07-31 Verpackungsanordnung für im wesentlichen flache produkte Pending EP4316997A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102022000016485A IT202200016485A1 (it) 2022-08-03 2022-08-03 Gruppo di confezionamento per prodotti sostanzialmente piatti

Publications (2)

Publication Number Publication Date
EP4316997A2 true EP4316997A2 (de) 2024-02-07
EP4316997A3 EP4316997A3 (de) 2024-04-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP23188603.7A Pending EP4316997A3 (de) 2022-08-03 2023-07-31 Verpackungsanordnung für im wesentlichen flache produkte

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EP (1) EP4316997A3 (de)
IT (1) IT202200016485A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202200016485A1 (it) 2022-08-03 2024-02-03 Sacmi Packaging & Chocolate S P A Gruppo di confezionamento per prodotti sostanzialmente piatti

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202200016485A1 (it) 2022-08-03 2024-02-03 Sacmi Packaging & Chocolate S P A Gruppo di confezionamento per prodotti sostanzialmente piatti

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2720738A (en) * 1954-07-26 1955-10-18 Stephano Brothers Package wrapping machine
DE3612811A1 (de) * 1985-04-30 1986-11-06 Sig Schweizerische Industrie-Gesellschaft, Neuhausen Am Rheinfall Falt-, siegel- und transportvorrichtung in einer maschine zum verpacken von tafeln
DE3627912A1 (de) * 1986-08-16 1988-02-18 Focke & Co Revolver fuer verpackungsmaschinen
EP3909879B1 (de) * 2020-05-12 2023-10-18 Teepack Spezialmaschinen GmbH & Co. KG Vorrichtung zum herstellen eines in einer umhüllung aufgenommenen beutels

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202200016485A1 (it) 2022-08-03 2024-02-03 Sacmi Packaging & Chocolate S P A Gruppo di confezionamento per prodotti sostanzialmente piatti

Also Published As

Publication number Publication date
EP4316997A3 (de) 2024-04-17
IT202200016485A1 (it) 2024-02-03

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