WO2013088403A2 - A wrapping termination device for a wrapper on a product. - Google Patents

A wrapping termination device for a wrapper on a product. Download PDF

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Publication number
WO2013088403A2
WO2013088403A2 PCT/IB2012/057331 IB2012057331W WO2013088403A2 WO 2013088403 A2 WO2013088403 A2 WO 2013088403A2 IB 2012057331 W IB2012057331 W IB 2012057331W WO 2013088403 A2 WO2013088403 A2 WO 2013088403A2
Authority
WO
WIPO (PCT)
Prior art keywords
product
wrapper
face
transversal
joining
Prior art date
Application number
PCT/IB2012/057331
Other languages
French (fr)
Other versions
WO2013088403A3 (en
Inventor
Francesco Gorrieri
Original Assignee
So.Te.Ma. Pack S.R.L.
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 So.Te.Ma. Pack S.R.L. filed Critical So.Te.Ma. Pack S.R.L.
Publication of WO2013088403A2 publication Critical patent/WO2013088403A2/en
Publication of WO2013088403A3 publication Critical patent/WO2013088403A3/en

Links

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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • 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
    • B65B59/00—Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • B65B59/04—Machines constructed with readily-detachable units or assemblies, e.g. to facilitate maintenance

Definitions

  • This invention relates to a wrapping termination device for a wrapper on a product.
  • wrapping termination devices for product wrappers which are, in particular, designed to join or heat-seal respective wrapper end flaps that have been coupled to each other and superposed on the corresponding transversal face of the wrapped product, and which are used in corresponding packaging or wrapping apparatuses used for placing a plastic film round a respective product, in particular a box- shaped product.
  • these wrapping termination devices are used in apparatuses which make packages or wrappers of a type known as "standard" in the jargon of the field.
  • wrapping termination devices are also used in apparatuses which make packages or wrappers of a second type generally known in the field by the English term "fin seal".
  • both of the above mentioned wrapper configurations or types involve wrapping a sheet or length of film round the product and defining a respective lateral or longitudinal closure in such a way that the product is fully wrapped and respective end closures at the respective transversal faces of the wrapped product are defined.
  • the end closures in the "standard” package are composed of portions which are folded into a general "wallet” shape, whilst the similar end closures in the “fin seal” package have a respective fin which is folded onto the respective lateral face of the respective product.
  • wrapping termination devices are used whose parts are mounted directly on the frame of the respective apparatus, with lengthy assembly times and the possibility of testing the actual operation of the devices only after they have been mounted on the machine and the entire machine is capable of operation.
  • wrapper termination devices make end seals comprising a plurality of flaps placed on top of one another, with a plurality of seals to hold them all together, resulting in weak and ineffective sealing of the package as a whole.
  • This invention proposes a novel solution, alternative to the solutions known up to now, and/or, more specifically, aims to overcome one or more of the above mentioned drawbacks, and/or to meet one or more of the needs mentioned in or inferable from the above.
  • a wrapping termination device for a wrapper on a product, the wrapper being, in particular, in the form of a sheet or film, especially a sheet or film of plastic material, placed round a respective product; the product being especially in the form of a container, a packet, a box-shaped element in general or a plurality of articles to be kept together in groups; the device being preferably usable in an apparatus for packaging the product in the wrapper and comprising means, for engaging and joining, in particular by heat sealing, to the wrapper corresponding end flaps which protrude longitudinally from a respective transversal face of the product and which are coupled to each other and superposed over the corresponding transversal face of the product, characterized in that the termination device, in particular the joining means, is mounted on respective supporting means connectable to the frame of the apparatus. That way, it is possible to make a wrapping termination device whose structure is such that it can be mounted first on a respective frame or supporting means and which, at a later stage, after being tested for correct operation, can be easily mounted
  • the wrapping termination device can be conveniently set up and tested at the bench and then quickly and easily mounted on the machine frame without the risk of having to remove it because it does not work properly, as was the case in the prior art.
  • a package comprising a product or article to be packaged and a wrapper placed around the product or article, the wrapper being, in particular, in the form of a sheet or length of film, especially one of plastic material such as polypropylene; the product being especially in the form of a container, a packet, a box-shaped element in general or a plurality of articles to be kept together in groups; the wrapper has at least one join or transversal end seal, in particular a first and a second transversal end seal, in the form of a respective transversal end fin sealing the wrapper around the product, the fin being obtained by joining, in particular by heat sealing, opposed wrapper end flaps protruding longitudinally beyond the corresponding transversal face of the wrapper, the respective fin being folded onto the corresponding wrapper flap which is superposed over the corresponding transversal face of the product and joined to the flap, in particular by heat sealing, and having at least one, in particular opposite lateral tabs protruding laterally beyond the lateral
  • the adhesion of the protruding tabs of the transversal end fin is improved and more durable. More specifically, advantageously, the lateral tab is joined to a face of the wrapper which does not already have on it any heat seals that have in any way reduced its sealing properties.
  • This also makes it possible to obtain a package that can meet specific marketing or labelling requirements of the packaged product, for example, to improve the readability or visibility of messages or logos present on the transversal face of the product.
  • FIGS. 2A to 2F are perspective views illustrating the steps in the making of a package of a type known as "standard";
  • FIG. 3A is a schematic side view of a first preferred embodiment of a packaging apparatus configured to make a package of the type known as "fin seal";
  • FIG. 3B is a schematic top view of a first preferred embodiment of a wrapping termination device for making a package of the type known as "fin seal";
  • FIG. 4A is a schematic side view of a second preferred embodiment of a packaging apparatus configured to make a package of the type known as "standard";
  • FIG. 4B is a schematic top view of a second preferred embodiment of a wrapping termination device for making a package of the type known as
  • FIG. 5 is a perspective view illustrating the bottom part, which is common to the wrapping termination devices for both "fin seal” and “standard” packages;
  • FIG. 6 is a schematic perspective view illustrating a further embodiment of the joining or sealing means usable in this joining device.
  • Figures 1A to 1F illustrate the steps in the making of a package of a first type C, known as "fin seal".
  • a product 11 preferably in the form of a packet or box-shaped element, is placed in a respective protective wrapper 13.
  • the product 11 has opposite transversal end faces 11a, 11b, between which respective longitudinal faces extend, the latter comprising opposite main faces, normally the wide front and rear product faces 1c, 11d, and opposite narrower faces 11e, 11f, extending between the main faces 11c, 11d.
  • the product wrapper 11 is in turn preferably in the form of a sheet or length of film, especially of plastic material, in particular polypropylene, which can be conveniently heat sealed and which is wrapped round the product to be packaged, defining corresponding superposed panels or portions, preferably in contact with the respective faces of the wrapped product.
  • the ones superposed on the transversal end faces 1a, 11b are denoted by the reference labels 13a, 13b, whilst those superposed on the opposite main faces 11c, 11d and on the opposite lateral faces 11e, 11f of the product are denoted by the reference labels 13c, 13d, 13e, 13f.
  • the longitudinal seal or join of the package is in the form of a respective fin 13g which protrudes laterally from the wrapper itself and which is located at a respective lateral face 11e of the product, the longitudinal fin 13g being obtained by joining, in particular by heat-sealing, lateral wrapper flaps 13'g, 13"g placed opposite each other and joined, as illustrated in Figure 1 B.
  • the longitudinal fin 3g is then folded and joined, in particular by heat- sealing, to the wrapper flap 13e which is superposed on and in contact with the corresponding lateral face of the product, in particular the lateral face 1 e of the product.
  • the package C also comprises first and second transversal end seals which are, respectively, in the form of respective transversal end fins 13h, 13h, which close the wrapper round the product and which are obtained by joining, in particular by heat-sealing, opposed wrapper end flaps 13'h, 13'h protruding longitudinally beyond the corresponding transversal face 11a, 11b of the product.
  • Each transversal end fin 13h, 13h is folded on the respective wrapper flap 13a, 13b which is superposed on and in contact with the corresponding transversal product face 11a, 11b and joined thereto, in particular by heat sealing, as may be inferred from Figure 1 F.
  • the fins 13h, 13h have a respective central portion 131, 131 and opposite lateral tabs 13i, 13i, which protrude laterally or transversely beyond the lateral product faces 11e, 11f and which are advantageously folded on the corresponding wrapper flap 13e, 3f which is superposed on and in contact with the corresponding lateral product face 11e, 1 f and joined thereto, in particular by heat sealing, as may be inferred from Figure 1 F.
  • Figures 2A to 2F illustrate the steps in the making of a package of a second type, known as "standard".
  • the wrapper 13 has a longitudinal closure 13m, preferably provided at a respective lateral face of the product and being, in particular, in the form of first and second lateral end wrapper flaps 13'm, 13"m which are superposed on and joined to each other and which are in turn superposed on and in contact with a corresponding face 1e of the product, preferably the lateral longitudinal face of the product.
  • the second type of package C has a wrapper with at least one transversal end closure, in particular a first and a second transversal end closure 13n, 13n.
  • Each transversal end closure 13n comprises a first and a second lateral flap 13'e, 3'f, on the extension on the narrow lateral faces of the wrapper which protrude longitudinally from the respective transversal end face 1a, 1b of the product 11 and which are folded onto the respective transversal end face 11a, 11b, as illustrated in Figure 2D.
  • each transversal end closure 13n also comprises main flaps which protrude longitudinally from the respective transversal end face 11a, 11b of the product 11 and which are folded onto the respective transversal end face 11a, 11b over the previously folded flaps 13'e, 13'f, and which, lastly, are joined to each other, as illustrated in Figure 2F to form the end closures 12n, 12n.
  • the frame 12 has a separating wall 12a between the operating units and the respective drive means.
  • the separating wall 12a is, as illustrated, a longitudinal wall which extends in height or vertically.
  • the apparatus comprises a unit 14 for feeding the product 11 to be packaged.
  • the apparatus also comprises a unit 16 for wrapping the wrapper into a tube shape round the product and which comprises a respective section 17 for wrapping the selfsame wrapper 13 round the product 11 , a section, or device, 20 for mutually coupling and joining the lateral end flaps 13'g, 13"g of the wrapper 13 protruding laterally from the product 11 , in particular protruding from the lateral face 11e of the product, and a unit 26 for sealing the coupled lateral flaps of the wrapper on the respective lateral face of the product.
  • a unit 16 for wrapping the wrapper into a tube shape round the product and which comprises a respective section 17 for wrapping the selfsame wrapper 13 round the product 11 , a section, or device, 20 for mutually coupling and joining the lateral end flaps 13'g, 13"g of the wrapper 13 protruding laterally from the product 11 , in particular protruding from the lateral face 11e of the product, and a unit 26 for sealing the coupled lateral flaps of the
  • the unit 16 for wrapping the wrapper into a tube shape further comprises means 19 for feeding the product and the wrapper wrapped round it, and which move with alternating feed motion, where feed steps are alternated with respective dwell steps, the feed means 19 being in the form of a revolving wheel having a plurality of radial cavities 191 for receiving the product, each cavity having a peripheral access opening through which the product is received and expelled, and the cavities being angularly spaced from each other, in particular equispaced from each other.
  • the apparatus also comprises a unit 18 for closing the ends of the wrapper round the product.
  • the unit 18 for closing the ends of the wrapper round the product comprises means 181 for feeding the product.
  • the means 181 for feeding the product are designed to convey the products while keeping them, in line with and spaced from each other.
  • the means 181 for feeding the product are in the form of a conveyor belt 181a defining a surface 181b on which the product rests and having a plurality of protrusions 181c, in particular equispaced protrusions, for engaging the back of each product.
  • the conveyor belt is an endless conveyor belt which moves with alternating feed motion such that product feed steps are alternated with dwell steps at operating stations where process steps are performed on the product.
  • the unit 18 for closing the ends of the wrapper round the product comprises a unit 182 for mutually coupling respective wrapper end flaps protruding longitudinally from the product, in particular beyond the respective transversal face of the product, and defining a respective transversal seal which closes the end of the wrapper.
  • the coupling unit 182 comprises means, or opposed jaws, 82a, 82a for moving closer together and joining, in particular by heat-sealing, the end flaps 13'h protruding longitudinally beyond the respective transversal face 11a, 11b of the product, in particular to define an end sealing fin 13h closing the wrapper on the product.
  • the mounting frame 12 of the apparatus comprises secondary supporting means 12b, 12b for the respective operating means, the secondary supporting means 12b, 12b being located at the front of the frame wall 12a.
  • the secondary supporting means 12b, 12b are, in particular, supported in cantilevered fashion by the frame wall 12a, in particular thanks to corresponding transversal supporting rods 12c, 12c mounted on the separating wall 12a.
  • the secondary supporting means comprise a first and a second elongate supporting plate 12b, 12b, along the length of the wall 12a which they are mounted on. More specifically, the elongate plates 12b, 12b extend parallel to each other and to the separating wall 12a.
  • the secondary supporting means 12b, 12b mount the unit 18 for closing the ends of the wrapper round the product.
  • the secondary supporting means in particular the first and second elongate plates 12b, 12b support the product feed means 181 at the unit 18 for closing the ends of the wrapper round the product.
  • the unit 18 for closing the ends of the wrapper comprises a unit 183 for folding the transversal fin onto the opposed transversal face of the product and which is, in particular, designed to fold the transversal fin upwards onto the opposed transversal face of the product, that is, onto a wrapper panel superposed on the corresponding transversal face of the product.
  • the unit 18 for closing the ends of the wrapper round the product also comprises a wrapping termination unit or device 8 which joins, in particular by heat sealing, the respective end fin 13h to the wrapper flap underneath it.
  • the unit 18 for closing the ends of the wrapper round the product comprises a first and a second wrapping termination unit or device 8, 8 which join the end fins at the respective transversal faces of the product.
  • the termination unit or device 8 comprises joining means 84a, in particular, heat sealing means, which comprises a respective element 84a which is movable from and against the respective transversal face 11a, 1 b of the product.
  • joining means 84a in particular, heat sealing means, which comprises a respective element 84a which is movable from and against the respective transversal face 11a, 1 b of the product.
  • the unit or device 8 is mounted on respective supporting means 84b.
  • the supporting means 84b mount a respective joining element 84a and transmission means 84c by which movement is transmitted to the transversely movable engagement and joining means 84b from a corresponding specific means, or motor, 84m for driving the selfsame unit 8.
  • the specific means, or motor, 84m for driving the selfsame unit 8 is mounted on the supporting means 84b.
  • the frame 12, or rather, the secondary frame supporting means, or mount, 12b, 12b has respective fastening or connecting means for the supporting means 84b of the termination unit 8.
  • the fastening or connecting means are preferably in the form of corresponding threaded holes made in the plate 12b into which matching connecting screws are inserted.
  • the transmission means 84c comprise means adapted to guide the engagement and joining means 84a from and towards the coupled flaps to be joined to the wrapper, along a path perpendicular to the respective transversal face 11a, 11b of the product.
  • the transmission means 84c adapted to guide the engagement and joining means 84a along a path which is linear or perpendicular to the respective engagement face 11a, 11b, advantageously comprise a four-bar linkage mechanism.
  • the four-bar linkage guide mechanism comprises first and second articulated parallel rods 85, 85, in particular a first and a second pair of the articulated parallel rods 85, 85, which mount a plate 86, in particular a horizontal plate, which directly supports the engagement and joining means 84a, which are not, however, illustrated in detail in Figure 5.
  • the four-bar linkage guide mechanism 85, 85 is driven by the motor 84m through the agency of an eccentric 88 which is connected by a respective lever 89 to a respective rod 85 of the four-bar linkage in order to rotate alternatingly back and forth, that is, towards and away from the respective transversal face 11a, 11b of the product.
  • the mounting frame of the termination device 8 comprises a first and second side mounting plate 84b, 84b defining rotary mounting means for elongate rods 85', 85' which connect to the rods 85, 85 of the pair of four-bar linkages which support the plate 86.
  • the engagement and joining means 84a have a respective engagement and joining element defining a main face 52a for engaging and joining the superposed coupled flaps superposed over the transversal face 1 a, 11b of the product, and a protrusion, in particular a first and a second protrusion 52b, 52b extending forwardly from the corresponding transversal end of the main face 52a and being adapted to engage a respective lateral tab 11e, 11e protruding laterally beyond the corresponding longitudinal lateral face 11e, 11f of the product and to fold it onto the wrapper panel 13e, 13f which covers the longitudinal lateral face 11e, 11f of the product in such a way as to join it thereto, in particular by heat sealing.
  • first and second protrusions extend from the lateral ends of the front engagement and joining face 52a, defining respective opposed inside faces for engaging and joining the respective protruding flap of the transversal fin which seals the wrapper end.
  • Figures 4A and 4B illustrate an apparatus for making packages of the second type C, having components which are identical, or equivalent, to those of the above described apparatus illustrated in Figures 3A and 3B, labelled with the same reference labels and which, to avoid making this description excessively lengthy, are not commented upon again in detail.
  • the termination device 8 comprises joining means 84a which have only one flat joining face and are without the lateral protrusions of the first preferred embodiment of the device.
  • the reference numeral 182 in Figure 4B denotes respective means for folding the flaps 13'e, 13'f, 13'c, 13'd and which may be of a type well within the knowledge of an expert in the trade.
  • engagement and joining means 84a which comprise an engagement and joining element 252 whose outer profile 253 is shaped to match the profile of a transversal face 111a of the product to engage a corresponding recessed surface 111aa of the transversal face of the product and to join corresponding longitudinal end flaps 13'c, 13'd, 13'e, 13'f, which protrude longitudinally from a respective transversal face 1 a, 11 b of the product and which are coupled to and superposed on the respective transversal face 11a, 11 b of the product 1.
  • the engagement and joining means 84a comprise an engagement and joining element 252 whose outer profile 253 is shaped to match the inner profile of a protruding edge 111ab of the transversal face 111a of the product to engage a corresponding recessed surface 111aa of the transversal face of the product and to join corresponding longitudinal end flaps 13'c, 13'd, 13'e, 13'f, which protrude longitudinally from a respective transversal face 11a, 1 b of the product and which are coupled to and superposed on the respective transversal face 11a, 11b of the product.
  • the engagement and joining means 84a are in the form of a heated body which is adapted to seal, in particular to heat seal, the wrapper flaps which are contact with each other.
  • joining means 84a mounted on the same device 8 and defining respective stations where the product dwells and is treated.
  • the wrapped product is preferably in the form of a container, a packet, a box-shaped element in general or a plurality of articles to be kept together in groups;

Abstract

A wrapping termination device (8) for a wrapper on a product comprises means (52) for engaging and joining, in particular for heat sealing, corresponding longitudinal end flaps which protrude longitudinally from a respective transversal face (11a, 11b) of the product and which are coupled to each other and superposed over the corresponding transversal face (11a, 11b) of the product. The joining device (8), in particular the respective joining means (52), is mounted on respective supporting means (152) which are conveniently connectable to the packaging frame.

Description

DESCRIPTION
A WRAPPING TERMINATION DEVICE FOR A WRAPPER ON A
PRODUCT
Technical field
This invention relates to a wrapping termination device for a wrapper on a product. Background art
Known from the prior art are wrapping termination devices for product wrappers which are, in particular, designed to join or heat-seal respective wrapper end flaps that have been coupled to each other and superposed on the corresponding transversal face of the wrapped product, and which are used in corresponding packaging or wrapping apparatuses used for placing a plastic film round a respective product, in particular a box- shaped product.
These prior art devices comprise means for engaging and joining, in particular for heat sealing, corresponding longitudinal end flaps which protrude longitudinally from a respective transversal face of the product and which are coupled to each other and superposed over the corresponding transversal face of the product. These prior art devices also comprise means for moving the engagement and joining means.
More specifically, these wrapping termination devices are used in apparatuses which make packages or wrappers of a type known as "standard" in the jargon of the field.
These wrapping termination devices are also used in apparatuses which make packages or wrappers of a second type generally known in the field by the English term "fin seal".
More specifically, both of the above mentioned wrapper configurations or types involve wrapping a sheet or length of film round the product and defining a respective lateral or longitudinal closure in such a way that the product is fully wrapped and respective end closures at the respective transversal faces of the wrapped product are defined. The end closures in the "standard" package are composed of portions which are folded into a general "wallet" shape, whilst the similar end closures in the "fin seal" package have a respective fin which is folded onto the respective lateral face of the respective product.
In both of the above mentioned types of apparatuses, wrapping termination devices are used whose parts are mounted directly on the frame of the respective apparatus, with lengthy assembly times and the possibility of testing the actual operation of the devices only after they have been mounted on the machine and the entire machine is capable of operation.
In practice, once it has been mounted, if the termination device causes problems or proves faulty in operation, it must be disassembled and substituted for a new termination device. Obviously, substitution means shutting down the entire apparatus.
This in turn means economic losses on account of the time-consuming assembly and testing required by these termination devices.
What is more, in the case of "fin seal" packages, these wrapper termination devices make end seals comprising a plurality of flaps placed on top of one another, with a plurality of seals to hold them all together, resulting in weak and ineffective sealing of the package as a whole.
Another disadvantage of current wrapper termination devices is that they are not effective in making the end seals of certain products, in particular of containers which have a transversal face which is indented relative to the edge of the container itself.
Whatever the case, within the trade, the need is felt for devices, in particular wrapping termination devices, for products of different kinds and which can be tailored to suit the specific technical or marketing requirements of the product to be packaged. Aim of the invention
This invention proposes a novel solution, alternative to the solutions known up to now, and/or, more specifically, aims to overcome one or more of the above mentioned drawbacks, and/or to meet one or more of the needs mentioned in or inferable from the above.
Accordingly provided is a wrapping termination device for a wrapper on a product, the wrapper being, in particular, in the form of a sheet or film, especially a sheet or film of plastic material, placed round a respective product; the product being especially in the form of a container, a packet, a box-shaped element in general or a plurality of articles to be kept together in groups; the device being preferably usable in an apparatus for packaging the product in the wrapper and comprising means, for engaging and joining, in particular by heat sealing, to the wrapper corresponding end flaps which protrude longitudinally from a respective transversal face of the product and which are coupled to each other and superposed over the corresponding transversal face of the product, characterized in that the termination device, in particular the joining means, is mounted on respective supporting means connectable to the frame of the apparatus. That way, it is possible to make a wrapping termination device whose structure is such that it can be mounted first on a respective frame or supporting means and which, at a later stage, after being tested for correct operation, can be easily mounted on the machine frame.
Advantageously, that means the wrapping termination device can be conveniently set up and tested at the bench and then quickly and easily mounted on the machine frame without the risk of having to remove it because it does not work properly, as was the case in the prior art.
According to a further aspect, there is provided a package comprising a product or article to be packaged and a wrapper placed around the product or article, the wrapper being, in particular, in the form of a sheet or length of film, especially one of plastic material such as polypropylene; the product being especially in the form of a container, a packet, a box-shaped element in general or a plurality of articles to be kept together in groups; the wrapper has at least one join or transversal end seal, in particular a first and a second transversal end seal, in the form of a respective transversal end fin sealing the wrapper around the product, the fin being obtained by joining, in particular by heat sealing, opposed wrapper end flaps protruding longitudinally beyond the corresponding transversal face of the wrapper, the respective fin being folded onto the corresponding wrapper flap which is superposed over the corresponding transversal face of the product and joined to the flap, in particular by heat sealing, and having at least one, in particular opposite lateral tabs protruding laterally beyond the lateral longitudinal faces of the product; characterized in that the respective lateral tab protruding laterally beyond the lateral longitudinal face of the product is folded onto the wrapper panel which covers the longitudinal lateral face of the product in such a way as to join it thereto, in particular by heat sealing.
That way, compared to prior art fin seal packages, the adhesion of the protruding tabs of the transversal end fin is improved and more durable. More specifically, advantageously, the lateral tab is joined to a face of the wrapper which does not already have on it any heat seals that have in any way reduced its sealing properties.
This also makes it possible to obtain a package that can meet specific marketing or labelling requirements of the packaged product, for example, to improve the readability or visibility of messages or logos present on the transversal face of the product.
Brief description of the drawings
These and other innovative aspects are set out in the appended claims and the technical features and advantages of the invention are also apparent from the detailed description which follows of non-limiting example embodiments of it with reference to the accompanying drawings, in which: - Figures 1A to 1F are perspective views illustrating the steps in the making of a package of a type known as "fin seal";
- Figures 2A to 2F are perspective views illustrating the steps in the making of a package of a type known as "standard";
- Figure 3A is a schematic side view of a first preferred embodiment of a packaging apparatus configured to make a package of the type known as "fin seal";
- Figure 3B is a schematic top view of a first preferred embodiment of a wrapping termination device for making a package of the type known as "fin seal";
- Figure 4A is a schematic side view of a second preferred embodiment of a packaging apparatus configured to make a package of the type known as "standard";
- Figure 4B is a schematic top view of a second preferred embodiment of a wrapping termination device for making a package of the type known as
"standard";
- Figure 5 is a perspective view illustrating the bottom part, which is common to the wrapping termination devices for both "fin seal" and "standard" packages;
- Figure 6 is a schematic perspective view illustrating a further embodiment of the joining or sealing means usable in this joining device.
Detailed description of preferred embodiments of the invention
Figures 1A to 1F illustrate the steps in the making of a package of a first type C, known as "fin seal". In practice, a product 11 , preferably in the form of a packet or box-shaped element, is placed in a respective protective wrapper 13.
As illustrated, the product 11 has opposite transversal end faces 11a, 11b, between which respective longitudinal faces extend, the latter comprising opposite main faces, normally the wide front and rear product faces 1c, 11d, and opposite narrower faces 11e, 11f, extending between the main faces 11c, 11d.
The product wrapper 11 is in turn preferably in the form of a sheet or length of film, especially of plastic material, in particular polypropylene, which can be conveniently heat sealed and which is wrapped round the product to be packaged, defining corresponding superposed panels or portions, preferably in contact with the respective faces of the wrapped product.
Of the superposed panels, the ones superposed on the transversal end faces 1a, 11b are denoted by the reference labels 13a, 13b, whilst those superposed on the opposite main faces 11c, 11d and on the opposite lateral faces 11e, 11f of the product are denoted by the reference labels 13c, 13d, 13e, 13f.
In practice, the longitudinal seal or join of the package is in the form of a respective fin 13g which protrudes laterally from the wrapper itself and which is located at a respective lateral face 11e of the product, the longitudinal fin 13g being obtained by joining, in particular by heat-sealing, lateral wrapper flaps 13'g, 13"g placed opposite each other and joined, as illustrated in Figure 1 B.
The longitudinal fin 3g is then folded and joined, in particular by heat- sealing, to the wrapper flap 13e which is superposed on and in contact with the corresponding lateral face of the product, in particular the lateral face 1 e of the product.
The package C also comprises first and second transversal end seals which are, respectively, in the form of respective transversal end fins 13h, 13h, which close the wrapper round the product and which are obtained by joining, in particular by heat-sealing, opposed wrapper end flaps 13'h, 13'h protruding longitudinally beyond the corresponding transversal face 11a, 11b of the product.
Each transversal end fin 13h, 13h is folded on the respective wrapper flap 13a, 13b which is superposed on and in contact with the corresponding transversal product face 11a, 11b and joined thereto, in particular by heat sealing, as may be inferred from Figure 1 F.
As illustrated, the fins 13h, 13h have a respective central portion 131, 131 and opposite lateral tabs 13i, 13i, which protrude laterally or transversely beyond the lateral product faces 11e, 11f and which are advantageously folded on the corresponding wrapper flap 13e, 3f which is superposed on and in contact with the corresponding lateral product face 11e, 1 f and joined thereto, in particular by heat sealing, as may be inferred from Figure 1 F.
Figures 2A to 2F, on the other hand, illustrate the steps in the making of a package of a second type, known as "standard".
As may be inferred from these drawings, in the second type of package C\ too, a product, similar in every way to the one packaged in the package of the first type, is wrapped in a wrapper 13, also similar in every way to that used for the first type of package. The components of the package which are similar to those of the first type of package are denoted by the same reference labels and, to avoid making this description too lengthy, will not be commented upon again in detail.
In the second type of package C, the wrapper 13 has a longitudinal closure 13m, preferably provided at a respective lateral face of the product and being, in particular, in the form of first and second lateral end wrapper flaps 13'm, 13"m which are superposed on and joined to each other and which are in turn superposed on and in contact with a corresponding face 1e of the product, preferably the lateral longitudinal face of the product. Further, the second type of package C has a wrapper with at least one transversal end closure, in particular a first and a second transversal end closure 13n, 13n.
Each transversal end closure 13n comprises a first and a second lateral flap 13'e, 3'f, on the extension on the narrow lateral faces of the wrapper which protrude longitudinally from the respective transversal end face 1a, 1b of the product 11 and which are folded onto the respective transversal end face 11a, 11b, as illustrated in Figure 2D. At the main, front and rear wrapper faces 13'c, 13'd, each transversal end closure 13n also comprises main flaps which protrude longitudinally from the respective transversal end face 11a, 11b of the product 11 and which are folded onto the respective transversal end face 11a, 11b over the previously folded flaps 13'e, 13'f, and which, lastly, are joined to each other, as illustrated in Figure 2F to form the end closures 12n, 12n.
As illustrated in Figures 3A and 3B, the apparatus for making the package C known as "fin seal" comprises a mounting frame 12 for a plurality of assemblies designed to make the package and having respective operating units and/or devices which are driven by corresponding drive means.
Advantageously, the frame 12 has a separating wall 12a between the operating units and the respective drive means. The separating wall 12a is, as illustrated, a longitudinal wall which extends in height or vertically. As illustrated, the apparatus comprises a unit 14 for feeding the product 11 to be packaged.
The apparatus also comprises a unit 16 for wrapping the wrapper into a tube shape round the product and which comprises a respective section 17 for wrapping the selfsame wrapper 13 round the product 11 , a section, or device, 20 for mutually coupling and joining the lateral end flaps 13'g, 13"g of the wrapper 13 protruding laterally from the product 11 , in particular protruding from the lateral face 11e of the product, and a unit 26 for sealing the coupled lateral flaps of the wrapper on the respective lateral face of the product.
The unit 16 for wrapping the wrapper into a tube shape further comprises means 19 for feeding the product and the wrapper wrapped round it, and which move with alternating feed motion, where feed steps are alternated with respective dwell steps, the feed means 19 being in the form of a revolving wheel having a plurality of radial cavities 191 for receiving the product, each cavity having a peripheral access opening through which the product is received and expelled, and the cavities being angularly spaced from each other, in particular equispaced from each other.
The apparatus also comprises a unit 18 for closing the ends of the wrapper round the product.
More specifically, the unit 18 for closing the ends of the wrapper round the product comprises means 181 for feeding the product.
More specifically, the means 181 for feeding the product are designed to convey the products while keeping them, in line with and spaced from each other.
More specifically, the means 181 for feeding the product are in the form of a conveyor belt 181a defining a surface 181b on which the product rests and having a plurality of protrusions 181c, in particular equispaced protrusions, for engaging the back of each product.
In practice, the conveyor belt is an endless conveyor belt which moves with alternating feed motion such that product feed steps are alternated with dwell steps at operating stations where process steps are performed on the product.
The unit 18 for closing the ends of the wrapper round the product comprises a unit 182 for mutually coupling respective wrapper end flaps protruding longitudinally from the product, in particular beyond the respective transversal face of the product, and defining a respective transversal seal which closes the end of the wrapper.
More specifically, for making packages of a first type C, the coupling unit 182 comprises means, or opposed jaws, 82a, 82a for moving closer together and joining, in particular by heat-sealing, the end flaps 13'h protruding longitudinally beyond the respective transversal face 11a, 11b of the product, in particular to define an end sealing fin 13h closing the wrapper on the product.
The mounting frame 12 of the apparatus comprises secondary supporting means 12b, 12b for the respective operating means, the secondary supporting means 12b, 12b being located at the front of the frame wall 12a. The secondary supporting means 12b, 12b are, in particular, supported in cantilevered fashion by the frame wall 12a, in particular thanks to corresponding transversal supporting rods 12c, 12c mounted on the separating wall 12a.
More specifically, the secondary supporting means comprise a first and a second elongate supporting plate 12b, 12b, along the length of the wall 12a which they are mounted on. More specifically, the elongate plates 12b, 12b extend parallel to each other and to the separating wall 12a.
As illustrated, the secondary supporting means 12b, 12b mount the unit 18 for closing the ends of the wrapper round the product.
The secondary supporting means, in particular the first and second elongate plates 12b, 12b support the product feed means 181 at the unit 18 for closing the ends of the wrapper round the product.
As illustrated, the unit 18 for closing the ends of the wrapper comprises a unit 183 for folding the transversal fin onto the opposed transversal face of the product and which is, in particular, designed to fold the transversal fin upwards onto the opposed transversal face of the product, that is, onto a wrapper panel superposed on the corresponding transversal face of the product.
The unit 18 for closing the ends of the wrapper round the product also comprises a wrapping termination unit or device 8 which joins, in particular by heat sealing, the respective end fin 13h to the wrapper flap underneath it.
More specifically, the unit 18 for closing the ends of the wrapper round the product comprises a first and a second wrapping termination unit or device 8, 8 which join the end fins at the respective transversal faces of the product.
More specifically, the termination unit or device 8 comprises joining means 84a, in particular, heat sealing means, which comprises a respective element 84a which is movable from and against the respective transversal face 11a, 1 b of the product. Advantageously, as may also be inferred from Figure 5, the unit or device 8 is mounted on respective supporting means 84b.
In practice, advantageously, the supporting means 84b, mount a respective joining element 84a and transmission means 84c by which movement is transmitted to the transversely movable engagement and joining means 84b from a corresponding specific means, or motor, 84m for driving the selfsame unit 8.
Further advantageously, the specific means, or motor, 84m for driving the selfsame unit 8 is mounted on the supporting means 84b.
More specifically, the frame 12, or rather, the secondary frame supporting means, or mount, 12b, 12b, has respective fastening or connecting means for the supporting means 84b of the termination unit 8. The fastening or connecting means are preferably in the form of corresponding threaded holes made in the plate 12b into which matching connecting screws are inserted.
As illustrated, the transmission means 84c comprise means adapted to guide the engagement and joining means 84a from and towards the coupled flaps to be joined to the wrapper, along a path perpendicular to the respective transversal face 11a, 11b of the product.
As illustrated, the transmission means 84c adapted to guide the engagement and joining means 84a along a path which is linear or perpendicular to the respective engagement face 11a, 11b, advantageously comprise a four-bar linkage mechanism.
More specifically, as illustrated, the four-bar linkage guide mechanism comprises first and second articulated parallel rods 85, 85, in particular a first and a second pair of the articulated parallel rods 85, 85, which mount a plate 86, in particular a horizontal plate, which directly supports the engagement and joining means 84a, which are not, however, illustrated in detail in Figure 5.
The four-bar linkage guide mechanism 85, 85 is driven by the motor 84m through the agency of an eccentric 88 which is connected by a respective lever 89 to a respective rod 85 of the four-bar linkage in order to rotate alternatingly back and forth, that is, towards and away from the respective transversal face 11a, 11b of the product.
As illustrated, the mounting frame of the termination device 8 comprises a first and second side mounting plate 84b, 84b defining rotary mounting means for elongate rods 85', 85' which connect to the rods 85, 85 of the pair of four-bar linkages which support the plate 86.
As may be inferred from Figure 3B, advantageously, the engagement and joining means 84a have a respective engagement and joining element defining a main face 52a for engaging and joining the superposed coupled flaps superposed over the transversal face 1 a, 11b of the product, and a protrusion, in particular a first and a second protrusion 52b, 52b extending forwardly from the corresponding transversal end of the main face 52a and being adapted to engage a respective lateral tab 11e, 11e protruding laterally beyond the corresponding longitudinal lateral face 11e, 11f of the product and to fold it onto the wrapper panel 13e, 13f which covers the longitudinal lateral face 11e, 11f of the product in such a way as to join it thereto, in particular by heat sealing.
More specifically, the first and second protrusions extend from the lateral ends of the front engagement and joining face 52a, defining respective opposed inside faces for engaging and joining the respective protruding flap of the transversal fin which seals the wrapper end.
Figures 4A and 4B illustrate an apparatus for making packages of the second type C, having components which are identical, or equivalent, to those of the above described apparatus illustrated in Figures 3A and 3B, labelled with the same reference labels and which, to avoid making this description excessively lengthy, are not commented upon again in detail.
In this second embodiment of the apparatus, the termination device 8 comprises joining means 84a which have only one flat joining face and are without the lateral protrusions of the first preferred embodiment of the device. Further, the reference numeral 182 in Figure 4B denotes respective means for folding the flaps 13'e, 13'f, 13'c, 13'd and which may be of a type well within the knowledge of an expert in the trade.
Advantageously, as illustrated in Figure 6, to make the packages C even in the case of non-standard shaped containers, that is, with recessed bottoms, engagement and joining means 84a are provided which comprise an engagement and joining element 252 whose outer profile 253 is shaped to match the profile of a transversal face 111a of the product to engage a corresponding recessed surface 111aa of the transversal face of the product and to join corresponding longitudinal end flaps 13'c, 13'd, 13'e, 13'f, which protrude longitudinally from a respective transversal face 1 a, 11 b of the product and which are coupled to and superposed on the respective transversal face 11a, 11 b of the product 1.
Advantageously, the engagement and joining means 84a comprise an engagement and joining element 252 whose outer profile 253 is shaped to match the inner profile of a protruding edge 111ab of the transversal face 111a of the product to engage a corresponding recessed surface 111aa of the transversal face of the product and to join corresponding longitudinal end flaps 13'c, 13'd, 13'e, 13'f, which protrude longitudinally from a respective transversal face 11a, 1 b of the product and which are coupled to and superposed on the respective transversal face 11a, 11b of the product.
In the embodiments illustrated, the engagement and joining means 84a are in the form of a heated body which is adapted to seal, in particular to heat seal, the wrapper flaps which are contact with each other.
As illustrated, there are a plurality of joining means 84a, mounted on the same device 8 and defining respective stations where the product dwells and is treated.
The wrapped product is preferably in the form of a container, a packet, a box-shaped element in general or a plurality of articles to be kept together in groups;
The invention described above is susceptible of industrial application. It would be obvious to one skilled in the art that several changes and modifications can be made to the invention without departing from the spirit and scope of the invention, described in depth above. In particular, one skilled in the art could easily imagine further embodiments of the invention comprising one or more of the features described herein. It will also be understood that all the details of the invention may be substituted by technically equivalent elements.

Claims

1. A wrapping termination device (8) for a wrapper on a product, the wrapper being in particular in the form of a sheet or film, especially a sheet or film of plastic material wrapped around a respective product; the product being in particular in the form of a container, a packet, a box- shaped element in general or a plurality of articles to be kept together in groups; the device (8) being preferably usable in an apparatus for packaging the product in the wrapper and comprising means (84a), for engaging and joining, in particular by heat sealing, to the wrapper corresponding end flaps which protrude longitudinally from a respective transversal face (11a, 11b) of the product and which are coupled to each other and superposed over the corresponding transversal face ( a, 1 b) of the product, characterized in that the termination device (8), in particular the joining means (84a), is mounted on respective supporting means (84b) connectable to the frame of the apparatus.
2. The device according to claim 1 , characterized in that the supporting means (84b) of the wrapping termination device (8) support the transmission means (84c) by which movement is imparted to the joining means (84a).
3. The device according to either of the preceding claims, characterized in that the supporting means (84b) of the termination device (8) support a specific drive means, or motor, (84m).
4. The device according to any of the preceding claims, characterized in that the frame, in particular the secondary frame supporting means, or mount, (12b, 12b) has respective fastening or connecting means for the supporting means (84b) of the termination device (8).
5. The device according to claim 4, characterized in that the fastening or connecting means for the supporting means (84b) of the termination device (8) are in the form of holes for insertion of corresponding connecting screws.
6. The device according to any of the preceding claims or according to the preamble to claim 1 , characterized in that it comprises a respective joining means (84a), in particular, a heat sealing means, which is movable transversely from and against the respective transversal face of the product.
7. The device according to any of the preceding claims or according to the preamble to claim 1 , characterized in that it comprises transmission means by which movement is imparted to joining means (84a) and which comprise means (85, 85) adapted to guide the engagement and joining means (84a) from and towards the respective transversal face of the product.
8. The device according to claim 7, characterized in that the means which are adapted to guide the engagement and joining means (84a, 84a) impart to the engagement and joining means (84a, 84a) a path which is perpendicular to the respective transversal face (11a, 11b) of the product.
9. The device according to claim 7 or 8, characterized in that the means (56) which are adapted to guide the engagement and joining means (84a) comprise a four-bar linkage mechanism (85, 85).
10. The device according to claim 9, characterized in that the four-bar linkage guide mechanism comprises a first and a second movable rod (85,
85) supporting a plate (86) which supports the engagement and joining means (84a), in particular a first and a second pair of movable rods defining a respective four-bar linkage supporting a plate (86) for the engagement and joining means (84a).
. The device according to any of the claims from 7 to 10, characterized in that the four-bar linkage guide mechanism comprises an eccentric actuator connected through a respective link to a respective rod of the four-bar linkage so as to move the rod reciprocatingly backwards and forwards.
12. The device according to any of the preceding claims or according to the preamble to claim 1 , characterized in that the engagement and joining means (84a) have a respective engagement and joining element defining a main face (52a) for engaging and joining the coupled flaps superposed over the transversal face (11a, 11b) of the product, and a protrusion, in particular a first and a second protrusion (52b, 52b) extending forwardly from the corresponding transversal end of the main face (52a) and being adapted to engage a respective tab (13i, 13i) protruding laterally beyond the corresponding longitudinal lateral face (11e, 11f) of the product and to fold it onto the wrapper panel (13e, 13f) which covers the longitudinal lateral face (11e, 11f) of the product in such a way as to join it thereto, in particular by heat sealing.
13. The device according to any of the preceding claims or according to the preamble to claim 1 , characterized in that the engagement and joining means have a respective engagement and joining element (252) whose outer profile (253) is shaped to match a transversal face (111a) of the product in order to engage a corresponding recessed surface (1 1aa) of the transversal product face and to join corresponding longitudinal end flaps (13'c, 13'd, 13'e, 13'f) which protrude longitudinally from a respective transversal face (11a, 1 b) of the product and which are coupled to each other and superposed over the corresponding transversal face (11a, 11b) of the product.
14. The device according claim 3, characterized in that the engagement and joining means (84a) have a respective engagement and joining element (252) whose outer profile (253) is shaped to match the inside profile of a protruding edge (111ab) of the transversal face (111a) of the product in order to engage a corresponding recessed surface (111aa) of the transversal product face and to join corresponding longitudinal end flaps (13'c, 13'd, 13'e, 13'f) which protrude longitudinally from a respective transversal face ( 1a, 11b) of the product and which are coupled to each other and superposed over the corresponding transversal face ( 1a, 1b) of the product.
15. A package comprising a product or article (11) to be packaged and a wrapper (13) placed around the product or article (11), the wrapper being, in particular, in the form of a sheet or length of film, especially one of plastic material such as polypropylene; the product or article being especially in the form of a container, a packet, a box-shaped element in general or a plurality of articles to be kept together in groups; the wrapper (13) having at least one join or transversal end seal, in particular a first and a second transversal end seal, in the form of a respective transversal end fin (13h) sealing the wrapper around the product, the fin (13h) being obtained by joining, in particular by heat sealing, opposed wrapper end flaps protruding longitudinally beyond the corresponding transversal face (13a, 13b) of the wrapper, the respective fin (13h) being folded onto the corresponding wrapper flap (13a, 13b) which is superposed over the corresponding transversal face (1 a, 11b) of the product and joined to the flap (13a, 13b), in particular by heat sealing, and having at least one, in particular opposite lateral tabs (13i, 13i) protruding laterally beyond the lateral longitudinal faces (11e, 11f) of the product; characterized in that the respective lateral tab (13i, 13i) protruding laterally beyond the lateral longitudinal face (1 e, 1f) of the product is folded onto the wrapper panel (13e, 13f) which covers the longitudinal lateral face (11e, 11f) of the product in such a way as to join it thereto, in particular by heat sealing.
16. The device and package characterized in that they are made according to any of the preceding claims and/or as described and illustrated with reference to the accompanying drawings.
PCT/IB2012/057331 2011-12-15 2012-12-14 A wrapping termination device for a wrapper on a product. WO2013088403A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000720A ITBO20110720A1 (en) 2011-12-15 2011-12-15 TERMINATION DEVICE FOR THE WINDING OF A CASE ON A PRODUCT.
ITBO2011A000720 2011-12-15

Publications (2)

Publication Number Publication Date
WO2013088403A2 true WO2013088403A2 (en) 2013-06-20
WO2013088403A3 WO2013088403A3 (en) 2013-08-08

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Application Number Title Priority Date Filing Date
PCT/IB2012/057331 WO2013088403A2 (en) 2011-12-15 2012-12-14 A wrapping termination device for a wrapper on a product.

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IT (1) ITBO20110720A1 (en)
WO (1) WO2013088403A2 (en)

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AU7401874A (en) * 1973-10-12 1976-04-08 Wrightcel Ltd Improved package sealing machine
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US4447284A (en) * 1983-01-10 1984-05-08 Shanklin Corporation Seal arm latching mechanism for heat sealing apparatus
IT1241865B (en) * 1990-06-29 1994-02-01 Sasib Spa MACHINE FOR WRAPPING PACKAGES OF CIGARETTES OR SIMILAR WITH WRAPPING MATERIAL.
DE4334745C5 (en) * 1993-10-12 2007-09-20 Focke & Co.(Gmbh & Co. Kg) Device for applying glue
IT1309288B1 (en) * 1999-06-10 2002-01-22 Gd Spa METHOD AND MACHINE FOR THE WRAPPING OF A PRODUCT IN A SHEET OF PAPERBOARDS HEAT-SEALABLE MATERIAL.
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DE102007027389A1 (en) * 2007-06-11 2008-12-18 Maier Packaging Gmbh Container sealing method for food packaging industry, involves making relative movement between punching tool and container, releasing container from restraint, and transporting heat sealing film for sealing subsequent containers

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WO2013088403A3 (en) 2013-08-08

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