EP1702848B2 - A method and a device for the assembly of packets for tobacco products - Google Patents
A method and a device for the assembly of packets for tobacco products Download PDFInfo
- Publication number
- EP1702848B2 EP1702848B2 EP06110800.7A EP06110800A EP1702848B2 EP 1702848 B2 EP1702848 B2 EP 1702848B2 EP 06110800 A EP06110800 A EP 06110800A EP 1702848 B2 EP1702848 B2 EP 1702848B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat
- cold
- packets
- reactivation
- setting adhesive
- 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.)
- Not-in-force
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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
- B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
- B65B51/02—Applying adhesives or sealing liquids
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- 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
- B65B19/00—Packaging rod-shaped or tubular articles susceptible to damage by abrasion or pressure, e.g. cigarettes, cigars, macaroni, spaghetti, drinking straws or welding electrodes
- B65B19/02—Packaging cigarettes
- B65B19/22—Wrapping the cigarettes; Packaging the cigarettes in containers formed by folding wrapping material around formers
- B65B19/223—Wrapping the cigarettes; Packaging the cigarettes in containers formed by folding wrapping material around formers in a curved path; in a combination of straight and curved paths, e.g. on rotary tables or other endless conveyors
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- 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
- B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
- B65B61/002—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for drying glued or sealed packages
Definitions
- the present invention relates to a method and a device for the assembly of packets for tobacco products.
- Cigarette packets are composed conventionally of an inner wrapper, substantially parallelepiped in shape, fashioned generally from metal foil paper and enveloping a group of cigarettes, for example twenty in number, and an outer wrapper that can be either of rigid or of soft type.
- the outer wrapper is fashioned from a flat diecut blank of paperboard prepared with longitudinal and transverse crease lines and cuts serving to delimit a plurality of panels and flaps that will combine, after a succession of folding operations, to form the structure of the outer wrapper.
- the outer wrapper is again fashioned by completing a succession of folding operations, in this instance on a sheet of pliable paper separated by a cutting operation from a continuous strip decoiled from a respective roll.
- Machines of prior art type able to manufacture such packets comprise a wrapping line equipped with infeed stations supplying the blanks or the sheets of paper, a station at which groups of cigarettes enveloped each in a relative inner wrapper of metal foil paper are taken up and paired with respective blanks or sheets of paper, a plurality of folding stations, and outfeed conveyor means from which the finished packets pass on to further machines.
- Such machines are equipped with gluing devices, upstream of the folding means, that will spread or spray an adhesive substance onto selected portions of the wrapping material.
- the adhesive dries to the point of setting and the outer wrapper can thus be rendered stable.
- the adhesive employed is a cold-setting type, such as a vinyl or similar glue
- it will require a certain length of time to dry to the point of setting, and accordingly, to ensure the outer wrapper can be properly stabilized during the course of this drying and setting interval, the packets must be subjected to the action of suitable restraint means, applied at least to the areas that have been glued.
- the finished packets emerging from the aforementioned wrapping line can be directed, for example, along an outfeed channel consisting typically in pair of conveyor belts, each looped around two respective return pulleys of which one at least is power driven.
- the active branches of the two belts are offered in contact to the flank faces of the assembled packet and extend mutually parallel, delimiting the aforementioned outfeed channel and functioning as the restraint means.
- the machine will generally incorporate heated metal plates breasted with the reverse sides of the active branches, so that the flank faces of the packets, glued previously with the cold-setting adhesive, can be warmed in such a way as to bring about the curing process (evaporation of water) and the resulting stabilization of the outer wrapper more quickly.
- the packets emerging from the restraint means may lose their stability and certain of the glued and joined parts may separate and lift, with the result that the packets are rendered defective and must be discarded.
- the object of the present invention is to provide a method and a device for use in the assembly of packets containing tobacco products, such as will be unaffected by the drawbacks described above.
- One particular object of the invention is to set forth a method and a device used in the assembly of packets for tobacco products such as will guarantee that all packets assembled are guaranteed free of gluing defects, regardless of any machine stoppages attributable, for example, to technical problems or maintenance requirements.
- numeral 1 denotes a portion of a wrapping line, in its entirety, on which packets 2 for tobacco products are assembled in a packaging machine.
- the wrapping line follows a predetermined path P along which sheets 3 of wrapping material, referred to commonly as blanks, or diecuts, are caused to advance in succession by suitable feed means of conventional embodiment (not illustrated in the drawings), following a feed direction denoted F.
- components 4 serving to apply a layer or dab of cold-setting adhesive, denoted 8, on selected areas of the wrapping material, and folding means 5 such as will fashion an enclosed packet about a relative group 6 of cigarettes already enveloped, typically, in a leaf of metal foil paper.
- the wrapping line 1 passes through a first and a second folding station illustrated schematically as two blocks 5a and 5b, positioned in sequence along the line 1, and on toward an outfeed stage 7 from which the finished packet 2 emerges.
- the group 6 of cigarettes is placed on the blank 3 and directed thus into the first folding station 5a, whereupon the blank 3 is closed around the group 6 of cigarettes in familiar manner, neither described nor illustrated, except for the glued second lateral flaps 8b, which will be bent and secured to the corresponding flaps 8d at the second folding station 5b.
- the wrapping line 1 further comprises an outfeed channel 9 placed to take up the finished packets 2 downstream of the folding means 5 and embodied as a pair of conveyor belts 10 each looped around two respective return pulleys 11 turning on vertical axes 12, of which one at least is power driven.
- the active branches 13 of the two belts 10 placed in contact with the flanks of the packets 2 extend parallel one with another, delimiting the outfeed channel 9 and functioning as restraint means 14 by which the packets 2 are held firmly in such a way as to stabilize the outer wrapper satisfactorily.
- the device according to the present invention comprises heater means 15 of which the function is to reactivate the cold-setting adhesive 8 applied to the aforementioned predetermined areas of the blank, in particular when the operating cycle of the packaging machine is interrupted for a given interval of time T, long enough for the bonding properties of the cold-setting adhesive to be lost yet short enough for the loss to be reversible by means of a heat-reactivation step.
- the adhesive is warmed up to a predetermined reactivation temperature t r , at which it regains the bonding properties lost during the break in the operating cycle of the machine.
- the device disclosed comprises processing means 16 such as will measure the time T elapsing in the event of a machine stoppage, when in receipt of a warning signal S from a device (not shown in the drawings) connected to the packaging machine and able to generate a start signal and a stop signal indicating the start and finish of a break in the operating cycle of the machine.
- processing means 16 such as will measure the time T elapsing in the event of a machine stoppage, when in receipt of a warning signal S from a device (not shown in the drawings) connected to the packaging machine and able to generate a start signal and a stop signal indicating the start and finish of a break in the operating cycle of the machine.
- the processing means 16 consist in metering means able to measure the duration of the stoppage when the machine is idle, and are connected to the heat reactivation means 15 by way of a control unit 17 governing the operation of these same means 15.
- the stoppage time T is compared by the processing means 16 with a first predetermined critical time value T1 indicating that the adhesive will have lost its bonding properties and needs to be reactivated, and with a second predetermined critical time T2 indicating that the adhesive will have deteriorated beyond recovery and even the heat-reactivation step is no longer of any use.
- the processing means 16 will respond by piloting the control unit 17 to initiate the heat reactivation step.
- the step of heat-reactivating the cold-setting adhesive 8 is initiated after the folding step and concurrently, at least in part, with the restraint step.
- the heat-reactivation means 15 are associated with the restraint means 14.
- the heat-reactivation means 15 comprise heated metal plates 18 breasted with the active branches 13 of the two belts 10, on the reverse side.
- the heat-reactivation step is brought about by associating heated restraining elements with each of the formed packets 2.
- the method according to the invention might also include a cooling step, implemented following the step of reactivating the cold-setting adhesive 8 by the application of heat so as to avoid degrading the packet 2 and the warmed adhesive, through the agency of cooling plates installed in series with the heated plates 18 and breasted with the reverse faces of the active branches 13.
- the plates could operate at ambient temperature, by way of example, or could be suitably cooled.
- wrapping line could also incorporate means by which to dry the packets 2, downstream of the heat-reactivation means 15.
- the drying means will comprise further plates dedicated to the drying step, located beyond the heated plates 18 and, if installed, the cooling plates.
- drying plates would be breasted likewise with the active branches 13 of the belts 10 dedicated to heat-reactivation of the adhesive, on the reverse side, or alternatively mounted to other belts located further along the wrapping line.
- the drying plates operate at a temperature t d lower than the reactivation temperature t r of the heated plates 18.
- drying plates and the heated plates 18 could be one and the same, operating at different temperatures controllable selectively according to whether the plates are being utilized at a given moment to dry or to reactivate the adhesive 8.
- the means 15 for heat-reactivation of the adhesive can be positioned upstream of the folding means 5, coming into operation before the folding step, or, if the folding means 5 comprise a plurality of folding stations 5a and 5b as in the example of figure 1 , the heat-reactivation means 15 can be positioned, additionally or alternatively, between one folding station 5a and the next folding station 5b.
- the positioning and number of heat-reactivation means 15 will depend in any event on the effective structure of the device and the interval of time elapsing between application of the cold-setting adhesive to the predetermined areas of the blank, and subsequent association of these same areas with the respective areas to which they are bonded.
- the heat-reactivation step could also be brought about by exposing the areas dabbed or sprayed with adhesive to convection, directing hot air from a convector heater, for example, or to radiated heat issuing from a suitable source.
- the final part of the wrapping line is equipped with a wrapping wheel 19 set in rotation about a first horizontal axis 20, a conveyor and reject wheel 21 located substantially tangential to the wrapping wheel 19 and rotatable about a second horizontal axis 22, also a drying wheel 23 rotatable about a third horizontal axis 24 and an outfeed channel 9a similar in all respects to the outfeed channel 9 of figure 1 .
- the channel 9a in question extends substantially parallel to the third horizontal axis 24 and is positioned on the same side of the drying wheel 23 as the wrapping and reject wheels 19 and 21.
- the wrapping wheel 19 is supplied with diecut blanks 3 advanced singly and in succession by feed means indicated schematically by an arrow 26, each slotted radially into a respective radial cavity or pocket (not illustrated) of the wheel 19, together with a respective group 6 of cigarettes.
- the blanks 3 are directed from an infeed station 27 through a plurality of folding stations 5, at which each one is bent by steps around the respective group 6 of cigarettes and secured in the folded position by means of the cold-setting adhesive, applied by two pairs of gluing nozzles 4a and 4b similar to those already described above with reference to figure 1 .
- the nozzles 4a and 4b are positioned beneath the predetermined path P and designed thus to spread the adhesive 8 on a blank 3 as it passes above.
- the folding steps performed on the blank 3 are completed in such a way that the packet arrives at the outfeed channel 9 in the finished state.
- the wrapping, reject and drying wheels 19, 21 and 23 are set in rotation by an indexing device not illustrated in the drawings, and the transfer of the packets 2 from one wheel to another takes place with the two wheels motionless.
- the aforementioned heat-reactivation means 15 are positioned next to the wrapping wheel 19 and/or to the outfeed channel 9a.
- the wrapping line of figure 2 is equipped with cooling plates 28 of the type mentioned previously, though not indicated in figure 1 , installed along the outfeed channel 9a in sequence with the heated plates 18.
- heating elements 15a located at several points along the circumferential path of the wrapping wheel 19, albeit in practice a limited number of such elements could be adopted, according to requirements, shaped and proportioned to match the glued areas of the blank 3 that need heating.
- the heating elements 15a are placed in such a way that, as the blank 3 advances and folds partially around the group 6 of cigarettes, the predetermined areas on which adhesive 8 has been deposited will pass in close proximity to the positions occupied by the elements 15a and receive the heat emitted by them.
- the method and the device according to the invention are able to guarantee the successful gluing and stabilization of packets even in the event of breaks in production occurring.
- the proportion of defective packets rejected as presenting unstuck folds can be considerably reduced, if not totally eliminated.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wrapping Of Specific Fragile Articles (AREA)
- Making Paper Articles (AREA)
- Basic Packing Technique (AREA)
- Container Filling Or Packaging Operations (AREA)
Abstract
Description
- The present invention relates to a method and a device for the assembly of packets for tobacco products.
- Cigarette packets are composed conventionally of an inner wrapper, substantially parallelepiped in shape, fashioned generally from metal foil paper and enveloping a group of cigarettes, for example twenty in number, and an outer wrapper that can be either of rigid or of soft type.
- In the case of a rigid packet, which typically has a hinged lid, the outer wrapper is fashioned from a flat diecut blank of paperboard prepared with longitudinal and transverse crease lines and cuts serving to delimit a plurality of panels and flaps that will combine, after a succession of folding operations, to form the structure of the outer wrapper.
- In the case of a soft packet, the outer wrapper is again fashioned by completing a succession of folding operations, in this instance on a sheet of pliable paper separated by a cutting operation from a continuous strip decoiled from a respective roll.
- Machines of prior art type able to manufacture such packets comprise a wrapping line equipped with infeed stations supplying the blanks or the sheets of paper, a station at which groups of cigarettes enveloped each in a relative inner wrapper of metal foil paper are taken up and paired with respective blanks or sheets of paper, a plurality of folding stations, and outfeed conveyor means from which the finished packets pass on to further machines.
- Such machines are equipped with gluing devices, upstream of the folding means, that will spread or spray an adhesive substance onto selected portions of the wrapping material.
- With the folding steps completed, the adhesive dries to the point of setting and the outer wrapper can thus be rendered stable.
- Conventionally, where the adhesive employed is a cold-setting type, such as a vinyl or similar glue, it will require a certain length of time to dry to the point of setting, and accordingly, to ensure the outer wrapper can be properly stabilized during the course of this drying and setting interval, the packets must be subjected to the action of suitable restraint means, applied at least to the areas that have been glued.
- To this end, the finished packets emerging from the aforementioned wrapping line can be directed, for example, along an outfeed channel consisting typically in pair of conveyor belts, each looped around two respective return pulleys of which one at least is power driven. The active branches of the two belts are offered in contact to the flank faces of the assembled packet and extend mutually parallel, delimiting the aforementioned outfeed channel and functioning as the restraint means. In addition, the machine will generally incorporate heated metal plates breasted with the reverse sides of the active branches, so that the flank faces of the packets, glued previously with the cold-setting adhesive, can be warmed in such a way as to bring about the curing process (evaporation of water) and the resulting stabilization of the outer wrapper more quickly.
- In the event of a break in production occurring and the machine being brought to a standstill, so that the time elapsing from the moment when the adhesive is applied to the moment when the glued portions are bent and joined becomes long enough for the bonding properties of the adhesive to be degraded, the packets emerging from the restraint means may lose their stability and certain of the glued and joined parts may separate and lift, with the result that the packets are rendered defective and must be discarded.
- The object of the present invention is to provide a method and a device for use in the assembly of packets containing tobacco products, such as will be unaffected by the drawbacks described above.
- One particular object of the invention is to set forth a method and a device used in the assembly of packets for tobacco products such as will guarantee that all packets assembled are guaranteed free of gluing defects, regardless of any machine stoppages attributable, for example, to technical problems or maintenance requirements.
- The stated object is realized in a method and a device according to the present invention for the assembly of packets for tobacco products, of which the features are as recited in one or more of the appended claims.
- The invention will now be described in detail, by way of example, with the aid of the accompanying drawings, in which:
-
figure 1 illustrates a portion of a wrapping line on which packets for tobacco products are assembled by the method according to the present invention, viewed schematically and in perspective; -
figure 2 shows a constructional example of the line infigure 1 . - With reference to the drawings,
numeral 1 denotes a portion of a wrapping line, in its entirety, on whichpackets 2 for tobacco products are assembled in a packaging machine. - The wrapping line follows a predetermined path P along which
sheets 3 of wrapping material, referred to commonly as blanks, or diecuts, are caused to advance in succession by suitable feed means of conventional embodiment (not illustrated in the drawings), following a feed direction denoted F. - Located along the aforementioned wrapping path P are
components 4 serving to apply a layer or dab of cold-setting adhesive, denoted 8, on selected areas of the wrapping material, and folding means 5 such as will fashion an enclosed packet about arelative group 6 of cigarettes already enveloped, typically, in a leaf of metal foil paper. - In the example of
figure 1 , thewrapping line 1 passes through a first and a second folding station illustrated schematically as twoblocks 5a and 5b, positioned in sequence along theline 1, and on toward an outfeed stage 7 from which the finishedpacket 2 emerges. - The
components 4 serving to apply layers or dabs of adhesive 8, which might consist in contact or spray type gluing devices, are shown in the example offigure 1 as two pairs ofgluing nozzles lateral flaps 8a and secondlateral flaps 8b that will be associated with furthercorresponding flaps - After the
nozzles setting adhesive 8, thegroup 6 of cigarettes is placed on the blank 3 and directed thus into thefirst folding station 5a, whereupon the blank 3 is closed around thegroup 6 of cigarettes in familiar manner, neither described nor illustrated, except for the glued secondlateral flaps 8b, which will be bent and secured to thecorresponding flaps 8d at the second folding station 5b. - The
wrapping line 1 further comprises an outfeedchannel 9 placed to take up the finishedpackets 2 downstream of the folding means 5 and embodied as a pair ofconveyor belts 10 each looped around tworespective return pulleys 11 turning onvertical axes 12, of which one at least is power driven. - The
active branches 13 of the twobelts 10 placed in contact with the flanks of thepackets 2 extend parallel one with another, delimiting theoutfeed channel 9 and functioning as restraint means 14 by which thepackets 2 are held firmly in such a way as to stabilize the outer wrapper satisfactorily. - The device according to the present invention comprises heater means 15 of which the function is to reactivate the cold-setting
adhesive 8 applied to the aforementioned predetermined areas of the blank, in particular when the operating cycle of the packaging machine is interrupted for a given interval of time T, long enough for the bonding properties of the cold-setting adhesive to be lost yet short enough for the loss to be reversible by means of a heat-reactivation step. - With this end in view, the adhesive is warmed up to a predetermined reactivation temperature tr, at which it regains the bonding properties lost during the break in the operating cycle of the machine.
- More precisely, the device disclosed comprises processing means 16 such as will measure the time T elapsing in the event of a machine stoppage, when in receipt of a warning signal S from a device (not shown in the drawings) connected to the packaging machine and able to generate a start signal and a stop signal indicating the start and finish of a break in the operating cycle of the machine.
- The processing means 16 consist in metering means able to measure the duration of the stoppage when the machine is idle, and are connected to the heat reactivation means 15 by way of a
control unit 17 governing the operation of thesesame means 15. - In particular, the stoppage time T is compared by the processing means 16 with a first predetermined critical time value T1 indicating that the adhesive will have lost its bonding properties and needs to be reactivated, and with a second predetermined critical time T2 indicating that the adhesive will have deteriorated beyond recovery and even the heat-reactivation step is no longer of any use.
- Should the measured stoppage time T fall between the first and second predetermined critical time values T1 and T2, then the processing means 16 will respond by piloting the
control unit 17 to initiate the heat reactivation step. - In the preferred solution of
figure 1 , the step of heat-reactivating the cold-setting adhesive 8 is initiated after the folding step and concurrently, at least in part, with the restraint step. To this end, the heat-reactivation means 15 are associated with the restraint means 14. - In particular, the heat-reactivation means 15 comprise heated
metal plates 18 breasted with theactive branches 13 of the twobelts 10, on the reverse side. Thus, the heat-reactivation step is brought about by associating heated restraining elements with each of the formedpackets 2. - The method according to the invention might also include a cooling step, implemented following the step of reactivating the cold-
setting adhesive 8 by the application of heat so as to avoid degrading thepacket 2 and the warmed adhesive, through the agency of cooling plates installed in series with theheated plates 18 and breasted with the reverse faces of theactive branches 13. The plates could operate at ambient temperature, by way of example, or could be suitably cooled. - Finally, the wrapping line could also incorporate means by which to dry the
packets 2, downstream of the heat-reactivation means 15. - The drying means, conventional in embodiment and therefore not illustrated, will comprise further plates dedicated to the drying step, located beyond the
heated plates 18 and, if installed, the cooling plates. - Such drying plates would be breasted likewise with the
active branches 13 of thebelts 10 dedicated to heat-reactivation of the adhesive, on the reverse side, or alternatively mounted to other belts located further along the wrapping line. - The drying plates operate at a temperature td lower than the reactivation temperature tr of the
heated plates 18. - In an alternative solution, not illustrated, the drying plates and the
heated plates 18 could be one and the same, operating at different temperatures controllable selectively according to whether the plates are being utilized at a given moment to dry or to reactivate theadhesive 8. - Alternatively, or in addition, to the elements described above, the
means 15 for heat-reactivation of the adhesive can be positioned upstream of the folding means 5, coming into operation before the folding step, or, if the folding means 5 comprise a plurality offolding stations 5a and 5b as in the example offigure 1 , the heat-reactivation means 15 can be positioned, additionally or alternatively, between onefolding station 5a and the next folding station 5b. - The positioning and number of heat-reactivation means 15 will depend in any event on the effective structure of the device and the interval of time elapsing between application of the cold-setting adhesive to the predetermined areas of the blank, and subsequent association of these same areas with the respective areas to which they are bonded.
- The heat-reactivation step could also be brought about by exposing the areas dabbed or sprayed with adhesive to convection, directing hot air from a convector heater, for example, or to radiated heat issuing from a suitable source.
- In the example of
figure 2 , the final part of the wrapping line is equipped with awrapping wheel 19 set in rotation about a firsthorizontal axis 20, a conveyor and rejectwheel 21 located substantially tangential to thewrapping wheel 19 and rotatable about a second horizontal axis 22, also adrying wheel 23 rotatable about a thirdhorizontal axis 24 and anoutfeed channel 9a similar in all respects to the outfeedchannel 9 offigure 1 . - The
channel 9a in question extends substantially parallel to the thirdhorizontal axis 24 and is positioned on the same side of thedrying wheel 23 as the wrapping and rejectwheels - The
wrapping wheel 19 is supplied withdiecut blanks 3 advanced singly and in succession by feed means indicated schematically by anarrow 26, each slotted radially into a respective radial cavity or pocket (not illustrated) of thewheel 19, together with arespective group 6 of cigarettes. - Advancing on the wrapping
wheel 19, theblanks 3 are directed from an infeedstation 27 through a plurality offolding stations 5, at which each one is bent by steps around therespective group 6 of cigarettes and secured in the folded position by means of the cold-setting adhesive, applied by two pairs ofgluing nozzles figure 1 . - In the example of
figure 2 , thenozzles adhesive 8 on a blank 3 as it passes above. - The folding steps performed on the blank 3 are completed in such a way that the packet arrives at the
outfeed channel 9 in the finished state. - The wrapping, reject and drying
wheels packets 2 from one wheel to another takes place with the two wheels motionless. - The aforementioned heat-reactivation means 15 are positioned next to the wrapping
wheel 19 and/or to the outfeedchannel 9a. - The wrapping line of
figure 2 is equipped withcooling plates 28 of the type mentioned previously, though not indicated infigure 1 , installed along the outfeedchannel 9a in sequence with theheated plates 18. - Also illustrated in
figure 2 , by way of example, are a plurality ofheating elements 15a located at several points along the circumferential path of thewrapping wheel 19, albeit in practice a limited number of such elements could be adopted, according to requirements, shaped and proportioned to match the glued areas of the blank 3 that need heating. Theheating elements 15a are placed in such a way that, as the blank 3 advances and folds partially around thegroup 6 of cigarettes, the predetermined areas on which adhesive 8 has been deposited will pass in close proximity to the positions occupied by theelements 15a and receive the heat emitted by them. - It will be evident from the foregoing that the method and the device according to the invention are able to guarantee the successful gluing and stabilization of packets even in the event of breaks in production occurring.
- In effect, by warming the glued portions of the outer wrapper, after the formation of the packet, or between the step of applying the adhesive and the subsequent folding step, it becomes possible to recover the bonding properties of the adhesive when lost due to a break in production and thus ensure that all of the packets are securely bonded.
- With the method and the device according to the invention, accordingly, the proportion of defective packets rejected as presenting unstuck folds can be considerably reduced, if not totally eliminated.
Claims (15)
- A method of assembling packets for tobacco products directed along a wrapping line (1) of a packaging machine equipped with feed means supplying a wrapping material (3) from which the packets (2) are made, including the step of applying a layer or dab of cold-setting adhesive (8) to predetermined areas (8a, 8b) of the wrapping material (3), and the step of folding the wrapping material (3) to form a packet, and further including at least one step of reactivating the cold-setting adhesive (8) applied to the predetermined areas (8a, 8b), by exposing the selfsame areas to heat, at a predetermined reactivation temperature (tr), wherein the heat-reactivation step is initiated following a break in the operation of the packaging machine lasting for a predetermined interval of time characterised in that the method further includes the steps of measuring the length of time (T) elapsing during a break in operation of the packaging machine, and comparing the resulting stoppage time (T) with the predetermined interval of time (T1-T2) between a first predetermined critical time value (T1) and a second predetermined critical time value (T2), within which any degradation of the cold-settling adhesive (8) and consequent loss of bonding properties can be reversed by implementing the heat-reactivation step, the heat reactivation step initiating when the stoppage time (T) falls between the first and second predetermined critical time values T1 and T2, wherein the heat-reactivation step is implemented on all packets (2) assembled by the packaging machine.
- A method as in claim 1, including a cooling stepfollowing the heat-reactivation step.
- A method as in claims 1 or 2 including a step, following the folding step, of restraining the packets (2), wherein the step of reactivating the cold-setting adhesive (8) by exposure to heat occurs concurrently, at least in part, with the restraining step.
- A method as in any one of claims 1 to 3, wherein the heat-reactivation step is implemented by means of heated restraint elements.
- A method as in claim 1, wherein the heat-reactivation step precedes the folding step.
- A method as in claim 1 or 5, wherein the heat-reactivation step occurs during the course of the folding step.
- A method as in claim 5 or 6, wherein the heat-reactivation step is implemented by radiating heat on the predetermined areas (8a, 8b) to which the cold-setting adhesive (8) has been applied.
- A method as in any one of claims 1 to 7, wherein the heat-reactivation step occurs as the wrapping material (3) advances along the wrapping line (1).
- A device for the assembly of packets for tobacco products, comprising feed means by which a wrapping material (3) is advanced along a wrapping line (1) of a packaging machine, means (4) by which to apply a layer or a dab of cold-setting adhesive (8) to predetermined areas (8a, 8b) of the wrapping material (3), and folding means by which the wrapping material (3) is formed into a packet, characterized by further comprising heater means (15) serving to reactivate the cold-setting adhesive (8) applied to the predetermined areas (8a, 8b), by exposure of the selfsame areas to heat, at a predetermined reactivation temperature (tr), wherein
it comprises processing means (16) able to measure a stoppage time (T) resulting from a break in operation of the packaging machine and connected on the output side to a control unit (17) such as will generate a signal to activate the heater means (15) in the event that the stoppage time (T) resulting from the break in operation of the packaging machine is within a given interval of time between a first predetermined critical time value (T1) and a second predetermined critical time value (T2), within which any degradation of the cold-setting adhesive (8) and consequent loss of bonding properties can be reversed by implementing the heat-reactivation step, wherein the action of the heater means (15) is applied to all of the packets (2) assembled by the packaging machine when in operation. - A device as in claim 9, comprising cooling means (28) located downstream of the heater means (15) along the feed direction followed by the wrapping material (3) and serving to cool at least the predetermined areas (8a, 8b) exposed previously to the action of the heater means (15).
- A device as in claims 9 or 10 further comprising means (14) by which to restrain the packets (2), positioned downstream of the folding means (5), wherein the cold-setting adhesive (8) is heat-reactivated by means (15) associated with the restraint means (14).
- A device as in claim 11, wherein the restraint means (14) comprise an outfeed channel (9) delimited by the active branches (13) of two conveyor belts (10) offered in contact to the flank faces of the packets (2), and the cold-setting adhesive (8) is heat-reactivated by means (15) comprising heated plates (18) breasted with the reverse faces of the active branches (13).
- A device as in claim 9, wherein the cold-setting adhesive (8) is heat-reactivated by means (15) positioned upstream of the folding means (5).
- A device as in claim 13, wherein the cold-setting adhesive (8) is heat-reactivated by means (15) comprising at least one convector heater or at least one radiator.
- A cigarette packer, comprising a device as in any one of claims 9 to 14 and implementing the method of any one of claims 1 to 8.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000167A ITBO20050167A1 (en) | 2005-03-17 | 2005-03-17 | METHOD AND DEVICE FOR PACKAGING PACKAGES FOR SMOKE ITEMS |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1702848A1 EP1702848A1 (en) | 2006-09-20 |
EP1702848B1 EP1702848B1 (en) | 2008-09-10 |
EP1702848B2 true EP1702848B2 (en) | 2014-12-03 |
Family
ID=35148780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06110800.7A Not-in-force EP1702848B2 (en) | 2005-03-17 | 2006-03-07 | A method and a device for the assembly of packets for tobacco products |
Country Status (7)
Country | Link |
---|---|
US (1) | US20060207224A1 (en) |
EP (1) | EP1702848B2 (en) |
JP (1) | JP2006256327A (en) |
CN (1) | CN1833861B (en) |
AT (1) | ATE407880T1 (en) |
DE (1) | DE602006002628D1 (en) |
IT (1) | ITBO20050167A1 (en) |
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ITBO20080076A1 (en) | 2008-02-06 | 2009-08-07 | Gd Spa | MACHINE FOR CONDITIONING PRODUCTS IN ENCLOSED MATERIALS. |
US7762046B2 (en) * | 2008-04-11 | 2010-07-27 | R.J. Reynolds Tobacco Company | Method for manufacturing cigarette packages |
IT1394943B1 (en) * | 2009-04-17 | 2012-07-27 | Gima Spa | DEVICE FOR PACKAGING A PRODUCT IN A CORRESPONDENT CONTAINER |
IT1395488B1 (en) * | 2009-08-28 | 2012-09-28 | Gd Spa | CONTAINER, RELATED BUTTON AND METHOD TO REALIZE SUITED CONTAINER. |
DE202009014194U1 (en) * | 2009-10-20 | 2009-12-31 | Köhl Maschinenbau AG | Shrinking device and packaging line |
CN102172570B (en) * | 2011-02-23 | 2014-11-12 | 四川省机械研究设计院 | Multi-station automatic glue-spraying machine for use in tobacco packaging |
ITBO20110745A1 (en) * | 2011-12-22 | 2013-06-23 | Gd Spa | PACKAGE DRIER IN A SMOKE PACKAGING LINE. |
ITBO20120294A1 (en) * | 2012-05-29 | 2013-11-30 | Gd Spa | METHOD FOR THE PRODUCTION OF A PACKAGE FOR EXTENDED SHAPE SMOKE ITEMS. |
CN103738542B (en) * | 2014-01-03 | 2015-10-28 | 泉州市科盛包装机械有限公司 | A kind of packing chest packing method |
GB2529431A (en) | 2014-08-19 | 2016-02-24 | Kraft Foods R & D Inc | Packaging and a method of manufacture |
CN105946281B (en) * | 2016-04-26 | 2018-05-22 | 东莞市上合旺盈印刷有限公司 | Packing box automatic assembly line |
DE102016207160A1 (en) * | 2016-04-27 | 2017-11-02 | Robert Bosch Gmbh | Apparatus and method for producing a bag package |
RS62735B1 (en) * | 2019-02-25 | 2022-01-31 | Stax Tech Doo Konjevici | Device and procedure for applying, drying and activating heat-activated glue on a packaging machine |
DE102020203360A1 (en) | 2020-03-16 | 2021-09-16 | Bicma Hygiene Technologie Gmbh | Method for wrapping a hygiene article or a stack of a number of hygiene articles |
IT202200005681A1 (en) * | 2022-03-23 | 2023-09-23 | Gd Spa | Wrapping unit and method for producing a sealed wrap around a group of smoking articles |
CN116692143B (en) * | 2023-08-02 | 2023-11-07 | 常州市回春医疗器材有限公司 | Disposable fallopian tube liquid injection three-way pipe packaging equipment and method |
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DE4020935C2 (en) † | 1990-06-30 | 1999-01-14 | Bosch Gmbh Robert | Process for producing packaging containers with overlap seams in the folding base |
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-
2005
- 2005-03-17 IT IT000167A patent/ITBO20050167A1/en unknown
-
2006
- 2006-03-07 EP EP06110800.7A patent/EP1702848B2/en not_active Not-in-force
- 2006-03-07 AT AT06110800T patent/ATE407880T1/en not_active IP Right Cessation
- 2006-03-07 DE DE602006002628T patent/DE602006002628D1/en active Active
- 2006-03-08 JP JP2006062486A patent/JP2006256327A/en active Pending
- 2006-03-14 US US11/374,078 patent/US20060207224A1/en not_active Abandoned
- 2006-03-16 CN CN2006100673308A patent/CN1833861B/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3618886C2 (en) † | 1985-06-14 | 1995-06-08 | Gd Spa | Device for applying an adhesive material to sheets of packaging material |
DE4020935C2 (en) † | 1990-06-30 | 1999-01-14 | Bosch Gmbh Robert | Process for producing packaging containers with overlap seams in the folding base |
Also Published As
Publication number | Publication date |
---|---|
DE602006002628D1 (en) | 2008-10-23 |
EP1702848B1 (en) | 2008-09-10 |
EP1702848A1 (en) | 2006-09-20 |
ATE407880T1 (en) | 2008-09-15 |
JP2006256327A (en) | 2006-09-28 |
US20060207224A1 (en) | 2006-09-21 |
ITBO20050167A1 (en) | 2005-06-16 |
CN1833861A (en) | 2006-09-20 |
CN1833861B (en) | 2011-09-07 |
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