IT202000003955A1 - DEVICE FOR FEEDING AND TREATMENT OF WRAPPING MATERIAL FOR PACKAGING MACHINES, SPECIES OF PAPER PRODUCTS FOR HYGIENIC OR DOMESTIC USE AND RELATED IMPLEMENTATION PROCEDURE - Google Patents

Description

DESCRIPTION

accompanying the patent application for industrial invention having as object e

TITLE

POWER AND TREATMENT DEVICE

OF WRAPPING MATERIALS FOR PACKAGING MACHINES

SPECIES OF PAPER PRODUCTS FOR HYGIENIC OR DOMESTIC USE

AND PROCEDURE FOR RELEVANT IMPLEMENTATION

SUMMARY

Feeding and processing device for wrapping material for packaging machines, especially paper products for hygienic or domestic use, comprising: unwinding dispensing means (2) for a strip of wrapping material in continuous sheet (1) unwinding in succession through a section of first means for tensioning and adjusting the advance by interoperational accumulation (4), a possible section of means for cleaning and preparing (7) the web of wrapping material in continuous sheet (1) for printing; a section of digital printing means (8) preferably with ink jet; an optional section of means for drying and fixing the print to the web of continuous sheet wrapping material (1); a section of second tensioning and feed adjustment means for interoperational accumulation (17); a forwarding section (20) of the web of continuous sheet wrapping material (1) to the packaging machine (21); electronic means of control, command and interlocking of phase to the packaging machine as well as? print management; as well? with the method for its implementation as per the invention itself, comprising the execution of the implementation steps corresponding to the operating means of the device.

DETAILED DESCRIPTION

Scope of the technique

In every industrial production area there is always greater tension to render as much as possible. flexible production and quota it on orders without creating stock, a criterion that is defined? on demand? or? single batch? or, with increasingly anglicisms? prevailing, "on demand? or? one batch? or? batch one ?.

In the industrial sector of the manufacture / transformation of paper products for hygienic or domestic use, identified in the sector with the generic term tissue, such as handkerchiefs and paper napkins, paper towels, toilet paper and kitchen towels, facial tissues, disposable tablecloths, paper dry, non-woven fabric and similar, these are packaged for marketing in groups, within casings and packs of wrapping material without stems, such as various types of heat-sealable plastic film, wrapping paper, kraft paper, tissue paper also coupled with heat-sealing material and more.

According to the known art, whatever the wrapping material is, it? previously printed, usually with flexographic, rotogravure, offset techniques, to show the reference brands and commercial graphics of the product, as well as? descriptive phrases, wordings, warnings and legal specifications, in the various sizes of the packages which? the wrapping material intended to constitute.

Limitations of the prior art

The aforementioned known technique implies that the reference industries are necessarily required to procure suitable stocks, or a large warehouse, of reels of duly printed wrapping material and in the various sizes of use, often multiplied by the number of client subjects, marketers and distributors to supply.

This need? of suitable variegated supplies of suitable stocks, in addition to implying by its nature immobilization of resources, often collides, or in any case has to deal with the evolution of graphics or other elements to be printed; resulting in the occurrence of unusability? for obsolescence and necessity? of replenishment, with losses in the face of stocks no longer? usable and with the relatively high costs that the remaking of dies and clich? of the above mentioned techniques are printed, also for the modification of the pi? small detail.

Even apart from the aforementioned cases of unexpected obsolescence, the establishment of a suitable warehouse in any case implies non-negligible financial fixed assets against the costs of printing the spare reels.

Furthermore, the loading of feeding reels of wrapping material according to the known art does not allow a rapid change of the format, where it is necessary to change the product due to the characteristics of the printing of the encarto and / or due to the relative sizing.

Under another approach, far from negligible in the overall productive value of the plants according to the known art, the rigidity? productive and lack of versatility? requires interventions, for the most? mostly manual, in order to achieve the assortments required by the market, especially for the supply of minor marketing structures such as superettes or minimarkets, inside the secondary packaging, or in this case packs or boxes containing the marketing packages when the size of the final distribution do not absorb secondary packs enclosing only homogeneous primary packs.

Aims of the invention

The main purpose of the present invention is, in this context, that of obviating the aforementioned limitations of the prior art, that is, that of providing a technology that allows to feed wrapping material to packaging machines for paper products for hygienic or domestic use in particular, as well as ? wrapping packaging machines in general, without the need? to create a supply warehouse upstream of the packaging machine.

Another purpose of the present invention? to achieve the previous purpose through a technology that also allows? to quickly vary the format of the wrapping material fed, at least in relation to the two-dimensional packaging design and graphics of the material.

Still another object of the present invention? to achieve the previous goals through a technology that allows flexibility? to modify the graphics of the fed wrapping material.

A further object of the present invention? to achieve the previous purposes through a versatile technology also downstream according to the possibility? to automatically manage the assortment of secondary packs.

Still another object of the present invention? that of achieving the preceding objects through a technology that can be adapted to pre-existing machines without substantially any modification to the machines themselves.

Still another object of the present invention? that of achieving the preceding objects by means of a simple and effective technology, safe in operation and of relatively economic cost in consideration of the results practically achieved with it.

Abstract summary of the solution concept

These and other objects are all achieved with the device for feeding and treating the wrapping material for packaging machines, especially paper products for hygienic or domestic use, according to the present invention as defined by the claims, comprising: unwinding dispensing means (2) of a web of wrapping material in continuous sheet (1) unwinding in succession through a section of first tensioning and feeding adjustment means for interoperational accumulation (4), a possible section of cleaning and preparation means (7) of the web of material to be wrapping in continuous sheet (1) for printing; a section of digital printing means (8) preferably with ink jet; an optional section of means for drying and fixing the print to the web of continuous sheet wrapping material (1); a section of second tensioning and feed adjustment means for interoperational accumulation (17); a forwarding section (20) of the web of continuous sheet wrapping material (1) to the packaging machine (21); electronic means of control, command and interlocking of phase to the packaging machine as well as? print management; as well? with the method for its implementation as per the invention itself, comprising the execution of the implementation steps corresponding to the operating means of the device.

Identification of the attached drawings

Further characteristics and advantages of the device for feeding and treating the wrapping material for packaging machines, especially paper products for hygienic or domestic use, and of the method for implementing it according to the present invention, will become more evident from the following detailed description of a relative form of preferred and non-exclusive embodiment, represented only by way of non-limiting example in the number two attached drawings tables, in which:

Figure 1 illustrates a schematic side view of an exemplary form of implementation of the device for feeding and treating the wrapping material for packaging machines, especially paper products for hygienic or domestic use according to the present invention;

Figure 2 shows a schematic plan view thereof;

Figure 3 shows in plan view the detail of a relative alternative embodiment.

Static description of the example of realization

With reference to these figures with 2? indicated a dispensing reel, driven by a motor 3, but which could also be idle, of wrapping material in continuous sheet, or tape 1A, consisting of a plastic film or a paper tape of any type and kind suitable for the purpose, unprinted, unwound from reel 2 in the direction indicated by the arrowheads superimposed thereto.

With 1B? an alternative sizing in width of the continuous sheet 1 of wrapping material is indicated, represented with a less marked line, constituting the maximum width accepted by the feeding device according to the invention in the illustrated embodiment example, obviously the reel 2 being meant to be equally wide in the alternative, as well as? it being understood that it is possible to manage in feeding each dimension of alternative tape 1 with a width less than the maximum 1B.

Coil 2? equipped with tensioning means according to the known art, such as for example load cells which? enslaved the motorization 3 where it exists, or braking means enslaved to load cells where the reel 2 is idle, able to keep the strip 1 at an appropriate tension in its unrolling as the diameter of the reel 2 decreases and in response to a variation in the relative inertia.

In the order of execution indicated by the advance arrows of tape 1, with 4? indicated as a whole a first accumulator lung, or a device with an interoperational warehouse function, implemented in the example of embodiment illustrated by means of fixed idle rollers 5 interacting with adjustable movable dancers 6 with controlled displacement, for control and accumulation, aimed at slowing down a momentary stop of the downstream advancement, return and restoration of the transit of the continuous sheet or tape 1; to change the speed? relative in the ambit of a speed? constant of unwinding from reel and feeding to the packaging machine in relationship of enslavement to the treatment times or to the speed? transit of intermediate operational sections; functions which can also be totally or partially alternatively delegated to the reel motorization depending on the load cells; or to any other solution according to the known technique of controlled unwinding of strips from reels and variation of the speed? of relative of the unwound tape.

Number 7 indicates and schematically represented in block means for cleaning and preparing the tape or sheet I to be processed below, consisting of devices according to the known art, which may or may not be present and, even where present, may or may not be operative on the tape or sheet 1 passing through it or not according to whether or not the sheet 1 itself needs pre-treatments according to what follows.

Number 8 indicates as a whole digital printing means, preferably ink jet, consisting of one or more? digital printing heads, which use water-based inks, or inks that can be cured with UV radiation, or other similar and compatible with the so-called inkjet printing technology, or other printing technique attributable to the so-called digital printing;

in the embodiment illustrated in Figures 1 and 2, the digital printing section? consisting of three heads 9A, 10A, and 11A in staggered succession, carried to project over the underlying belt 1, passing over an abutment 12, to cover the entire relative width, in a stepped sequence, by means of respective arms 13 projecting staggered from each other;

in the alternative embodiment illustrated in Figure 3, the three heads 9B, 10B and 11B are supported in line to hang over the underlying tape 1 to cover the entire relative width;

in still alternative embodiments the digital printing means 8, preferably ink jet, can be constituted by one or by any number of heads, however dislocated and supported to perform their functions in a manner suitable for the purpose.

With 14 are then indicated and schematically represented in block means for drying and polymerization of the sheet 1 as previously processed by printing, consisting of devices according to the known art, which may or may not be present and, even where present, may or may not be operative on the sheet 1 passing through it or not depending on whether the sheet 1 itself needs post-treatment or not depending on how it was previously processed.

Downstream of the drying and finishing means 14? inserted on the track of the belt 1 a driving roller 15 with motorization 16 of the belt 1 itself.

With 17? therefore indicated as a whole a second accumulator lung, or here too a device with an interoperational warehouse function, implemented in the example of embodiment illustrated by means of fixed idle rollers 18 interacting with adjustable movable dancers 19 with controlled displacement, for control and accumulation aimed at slowing up to a momentary stop of the downstream advancement, restitution and restoration of the transit of the continuous sheet or tape 1; to homogenize the speed? power supply to the packaging machine 21 in relation to enslavement to the treatment times or to the speed? transit of the intermediate operational sections or in the context of speeds? variables required by the printing means 8, functions which can also be in whole or in part alternatively delegated to drive motors depending on load cells; or to any other solution according to the known technique of controlled feeding of strips of wrapping material to packaging machines from reels and variation of the speed? of relative tape.

By means of a deflection roller 20 appropriately positioned as a function of what is downstream, the belt 1 then reaches a packaging machine, schematically illustrated with a block and indicated with 21, of any kind and type suitable for industrially packaging paper products for the home. and the igiane in particular and industrial products of any gender and type of confezioanrsi or preconfezioniarsi within incarti in general.

The interface with the downstream packaging machine can be implemented with preparatory devices for automatic packaging operations, for example gumming devices for the sheet of wrapping material, or dispensers that provide for depositing layers of glue. where required for the attachment of the subsequent wrapping following the folding of the sheet.

In particular, devices for depositing thermo-fusible adhesive layers, so-called hot melt, the adoption of which, in combination with the versatility characteristics of printers suitable for effectively operating on any type of paper, allow the adoption of any type of paper, also of the common type in any way prepared, as packaging material.

Any test items? statically described of the device for feeding and treating the wrapping material for packaging machines, especially paper products for hygienic or domestic use according to the present invention, are subject to the operational control of a computerized logic, managed by a processor of any type suitable for the purpose, with man-machine interface, i.e. screen, process control pushbutton panel and interface with the downstream packaging machine (Human-Machine Interface - HMI), preferably integrated with a portable device in the hands of the operator supervising the complex;

the computerized logic regulates the advancement of the tape 1 and the relative timing in relation to all the operating elements interposed between the reel 2 and the packaging machine 21, or in relation to all the constituent elements of the present invention which, for the purposes focused above and the advantages noted below, interfere in what according to the known art? a direct and immediate passage between unwinding the web of wrapping material and relative feeding to the packaging machine;

even more? specifically, computer logic governs tensions and speeds? of unrolling of the tape 1 from the reel 2 in final relationship with the speed? power supply demanded by the packaging machine 21 and in an intermediate relationship with the contingent demands of the digital printing means 8, by intervening on the load cells of the motorized drivers and on the accumulator lungs downstream 4 and upstream 17 of the digital printing means 8 for overall purposes of rejection of the incoming disturbances to the packaging machine 21.

Furthermore, the same electronics and man-machine interface also presides over the management and launch of the print designs performed by the print section 8, the changes in the print data and any further graphics; by transferring the aforementioned graphics to the printing machine 8, generating and defining the sequence, the quantities? and the other variables with which? carried out the process.

Dynamic description of the example of realization

Having cos? once the static description of a preferred example of embodiment of the device for feeding and treating the wrapping material for packaging machines, especially paper products for hygienic or domestic use according to the present invention, is finished, as follows we will illustrate the relative operation, corresponding to the method of relative implementation:

the reel 2 dispenses the tape 1 of film or sheet of appropriate wrapping material, devoid of any graphics and printing, or only partially printed, suitably sized in width to the contingent needs of the final package to be obtained, conducted along a path that leads to feed the packaging machine 21.

Along the way the film or tape 1? subjected to the treatments corresponding to the operational functions of the sections that consecutively crosses continuously:

a first accumulation and return of the relative dynamic segment in the crossing of the section comprising the first accumulator lung 4, with the function of an interoperational store to vary its speed; relative under a speed? constant of unwinding from reel and feeding to the packaging machine in relationship of enslavement to the treatment times or to the speed? transit of the intermediate operational sections.

Cleaning and preparation in crossing section 7 for cleaning and preparation for subsequent operations to the extent that such cleaning and preparation of the web or sheet 1 are necessary.

Digital printing preferably by ink jet in the crossing of the printing section 8 through at least one printer head and preferably a plurality of printing heads. of heads respectively assigned to segments of width, arranged staggered 9A, 10A and 11 A, or in line 9B, 10B and 11 B, even on more? lines.

Drying and polymerization in crossing section 14 of drying and polymerization of the previous printing, to the extent that such drying and polymerization of the web or sheet 1 are necessary for typology d? printing technique applied in the contingency.

A second accumulation and return of the relative dynamic segment in the? crossing of section comprising a second accumulator lung 17, with the function of interoperational warehouse to vary its speed? relative in the scope of a velocity? constant of unwinding from reel and feeding to the packaging machine in relationship of enslavement to the treatment times of the intermediate operative sections, that is to the speeds? transit of the intermediate operational sections in view of the speed? recall of the packaging machine.

Implementation alternatives

It is obvious that in further alternative embodiments, still falling within the concept of innovation underlying the example of embodiment illustrated above and claimed below, the device for feeding and treating the wrapping material for packaging machines, especially paper products for hygienic or domestic use and the process of relative implementation according to the present invention can be carried out with technical and mechanical equivalents, or equipped with further integrative devices, so? like all the modes? the relative procedural steps can be varied in a manner suitable for the purpose;

In particular:

how already? mentioned in the descriptive exposition, or print media can be of any kind suitable for the purpose;

can also be conceived a succession of print heads on pi? file;

the wrapping material, plastic film or paper, can? be partially printed in constant elements.

Advantages of the invention

As is evident from the above detailed description of a preferred example of embodiment, the device for feeding and treating the wrapping material for packaging machines, especially paper products for hygienic or domestic use, and the method for its implementation according to the present invention offer the advantages corresponding to the achievement of the intended aims and others:

in fact, an innovative and functional technology is achieved, polyvalent and adaptable to pre-existing systems, aimed at eliminating the warehouse of wrapping material enslaved by the packaging machines allowing a substantially instant variation of the printing on the wrapping material and even a personalization of the single wrapping.

At the same time, advantages of versatility have been achieved? even downstream in the face of the possibility? to automatically carry out the assortment of secondary packs.

Scope of the protection invoked

Having cos? described the device for feeding and treating the wrapping material for packaging machines, especially paper products for hygienic or domestic use, and the procedure for its implementation according to the present invention, with reference to one of their preferred embodiments, will be described. it is obvious to want to protect all possible embodiments with variants of normal implementation for those skilled in the art, which do not modify the invention without departing from the purposes envisaged therein; with us? it is intended, both in the foregoing description and in the following claims, to protect all the embodiments and variants that fall within the concept of solution, in the spirit and in the purposes of the invention itself.

LEGEND OF THE NUMBERS

1) film or tape

1A) example size film or tape

1B) film or tape maximum width

2) coil

3) coil motor

4) first accumulator lung as a whole

5) fixed idle rollers of the first accumulator lung

6) adjustable dancers of the first accumulator lung

7) section of cleaning and preparation of the sheet

8) printing section

9A) first offset head

9B) first linear head

10A) second offset head

10B) second linear head

11A) third offset head

11B) third linear head

12) press feedback

13) staggered projecting arms of respective staggered head support 14) drying and curing section

15) driving roller

16) drive roller motor

17) second accumulator lung as a whole

18) fixed idle rollers of the second accumulator lung

19) movable adjustable dancers of the second accumulator lung 20) return roller to the packaging machine

21) packaging machine

Claims (2)

CLAIMS 1) Feeding and processing device for wrapping material for packaging machines, especially paper products for hygienic or domestic use, characterized by the fact of comprising: unwinding dispensing means (2) of a strip of wrapping material in continuous sheet (1) unwinding and passing in succession through a section of first tensioning and advancement adjustment means for interoperational accumulation (4); a section of digital printing means (8) adapted to print the web of wrapping material in continuous sheet (1); a section of second tensioning and feed adjustment means for interoperational accumulation (17); a forwarding section (20) of the web of continuous sheet wrapping material (1) to the packaging machine (21); electronic means of control, command and interlocking of phase to the packaging machine as well as? print management. 2) Feeding and processing device for wrapping material for packaging machines, especially paper products for hygienic or domestic use, as per the first claim, characterized by the fact of comprising: unwinding dispensing means (2) of a strip of wrapping material in continuous sheet (1) unwinding and passing in succession through a section of first tensioning and advancement adjustment means by interoperational accumulation (4); a section of means for cleaning and preparing (7) the web of continuous sheet wrapping material (1) for printing; a section of digital printing means (8) adapted to print the web of wrapping material in continuous sheet (1); a section of means for drying and fixing the print to the web of continuous sheet wrapping material (1); a section of second tensioning and feed adjustment means for interoperational accumulation (17); a forwarding section (20) of the web of continuous sheet wrapping material (1) to the packaging machine (21); electronic means of control, command and interlocking of phase to the packaging machine as well as? print management, 3) Device as per first or second claim, characterized by the fact that said digital printing means (8) consist of one or more? digital inkjet print heads. 4) Device as per the preceding claims, characterized by the fact that said digital printing means (8) consist of a plurality of media. of print heads (9A, 10A, 11 A) supported in staggered succession in relation to the transit of the ribbon of wrapping material in continuous sheet (1), 5) Device as per the preceding claims, characterized by the fact that said digital printing means (8) consist of a plurality of media. of print heads (9B, 10B, 11B) supported in a transverse line in relation to the transit of the web of wrapping material in continuous sheet (1). 6) Device as per the preceding claims, characterized by the fact that said first and second tensioning and adjusting means (4) of the web of continuous sheet wrapping material (1) consist of a device with an interoperational warehouse function implemented by means of fixed idle rollers ( 18) interacting with movable adjustable dancers (19) with regulated dislocation for control and accumulation aimed at slowing down until a momentary stop of the? downstream or upstream advancement, return and restoration of the transit of the continuous sheet or belt (1). 7) Device as per the preceding claims, characterized in that said section of the forwarding section (20) of the web of continuous sheet wrapping material (1) to the packaging machine (21) comprises gumming devices for the sheet of wrapping material, or dispensers which provide to deposit glue layers also of the thermo-activable type l? where required for the attachment of the subsequent wrapping following the folding of the sheet. 8) Process of feeding and treating the wrapping material for packaging machines, especially paper products for hygienic or domestic use, characterized by the fact of comprising controlled unwinding of a sheet of wrapping material from a reel (2), tensioning and feeding adjustment for interoperational accumulation (4), possible cleaning and preparation (7) of the web of wrapping material in continuous sheet (1) for printing; digital printing (8) of the web of wrapping material in continuous sheet (1); possible drying and fixing of the print to the ribbon of continuous sheet wrapping material (1); tensioning and feed regulation for interoperational accumulation (17); forwarding (20) of the strip of wrapping material in continuous sheet (1) to the packaging machine (21). 9) Device and method according to the preceding claims, characterized in that all the relative actuation means and all the relative phases are subjected to computerized control and command logic. 10) Device and method according to the preceding claims, characterized by the fact that the computerized logic which controls and commands all the relative actuation means and all the relative phases also controls to the management of digital printing.