RU2698212C2 - Method and device for packing articles, liquid or loose material into film bags and web of bags - Google Patents

Abstract

FIELD: packaging industry.

SUBSTANCE: described is a method of packing articles, liquid or loose material into bags of film, which move through filling station in continuous web of bags, wherein holes of bags are kept open for receiving items, after which bags are closed and separated from web. In order to increase the rate of filling and reducing the cost of bags, the web of bags is equipped with a central supporting area extending longitudinally along the web of bags and connecting bags which are located nearby, across the web. Central supporting area moves on the supporting rail along the conveyor path through the stowing station and is formed as a completely or partially closed channel. Peripheral areas of bags at the furthest from the middle opposite edges at two adjacent bags are brought into the guiding connection with the guiding facilities made with possibility of squeezing and directing the edge areas on opposite edges of the hole of the bag along the conveyor movement path through the stowing station.

EFFECT: as a result of said movement, guiding means cause separation of bag hole edges for subsequent opening of bags in stowing station and then, after filling bags, edges of hole of bag are again connected for its closing.

12 cl, 27 dwg

Description

FIELD OF TECHNOLOGY

[0001] The present invention relates to a method for packaging products, liquid or bulk material in film bags that are transported through a filling station in a continuous bag fabric, the bag openings being kept open for receiving products, after which the bags are closed and separated from the fabric, according to the proposed method, the canvas of the bags is initially in the area located along the edges of its holes, is brought into the guide connection with the guiding means, made with the possibility of the compression and direction of the peripheral regions at opposite edges of the bag opening along the conveyor moving path through the filling station, so that as a result of this movement, the guiding means cause the edges of the bag opening to separate to open the bags in the filling station and then, after filling the bags, connect the edges of the bag opening to close the bags moreover, according to the proposed method, the opposite edges of the opening of the bag are mutually deployed, and the canvas of the bags is introduced into the interaction ystvie with guide means by transporting the bags on the supporting rail, wherein the guide means provide retention of the web of bags along the path of its transportation through the filling station.

[0002] The invention further relates to a device for implementing the proposed method, and the proposed device contains:

- a filling station in which the openings of the bags are kept open for receiving products;

- guiding means configured to pinch and guide peripheral regions on opposite outer edges of the bag opening along the conveyor moving path through the filling station, so that as a result of this movement, the guiding means cause the edges of the bag opening to separate to further open the bags in the filling station and then after filling bags again connect the edges of the opening of the bag to close the bags;

- a supporting rail for introducing the web of bags into interaction with the guiding means.

[0003] The invention further relates to a bag web for use in this manner and in such an apparatus, the bag bag containing an adjacent sequence of bags separated by slots extending from the lower edge of the fabric to a point below the upper edge of the fabric, the side edges of the webs being covered by welding areas, this bag canvas contains a Central supporting region extending longitudinally along the bag canvas and connecting the bags that are adjacent, across the canvas.

BACKGROUND

[0004] A basic example of this technology is presented in EP-696997, which describes that the opposite upper edge regions of the bag web are formed with curved peripheral parts that are formed by grooves designed to be pulled by transport rods that diverge to form the bag openings when moving them in the direction of transportation so that they can be filled, for example, by means of an upstream charging funnel, after which the transporting rods again descend for temporary closure of filled bags. Then, finally, the bags can be closed by the welding areas below these tubular parts, after which these parts are cut off and the bags are separated. Alternatively, it is indicated that instead of the tubular parts, edge thickenings can be used, which can be placed in slotted guide tubes for appropriate bag transportation.

[0005] Thereafter, other means were also proposed for gripping and transferring the opposite upper edges of the bag web, for example as described in EP 0 555 321 B, where special gripping chains are used for this purpose without special design requirements for the upper edge regions of the folded bag web . It is essential that as a finished product a simple rolled flat sheet of film film without local thickenings can be used, however, there are significant problems associated with pointing the opposite edges of the bags for safe interaction with chains, as well as with the desirable cost of implementing these chains .

[0006] EP 0 396 838 and EP 0 825 116 also indicate that a flat tubular web of film can be applied that can be continuously opened along its upper edge while unfolding and gripping the upper edges thus opened without the need for special execution thereof the shape of the grooves or thickenings, which indicates a clear simplification of the requirements for forming the canvas of the bags. The cut upper edge parts are deployed to be clamped between respective moving belts that are formed with longitudinal recesses and corresponding cords for pressing into said recesses, as a result of which the necessary strong bearing interaction can be achieved.

[0007] However, this interaction is not more durable than axial sliding, which can occur between the upper edges of the bag web and the corresponding means of the conveyor belt, as a result of which the general synchronization of the movement of the bag with the movement of conveyor belts may be impaired. In addition, there may be deviations in the level of the region of the sides of the web sandwiched between conveyor belts, which may matter as to whether or not the filled bags are finally closed directly in the area intended for this purpose, for example, before marking the bag.

[0008] EP 1 087 890 describes a method in which a simplified flat web of bags with a closed indicated edge of the hole is used, when the web is fed to a single support bar and is continuously opened in the filling station, as a result of which the peripheral strip portions so straightened up are deployed for laying on opposite chains. These strip parts are preformed with a sequence of holes that are lowered onto the pointed upward holding pins mounted on the bearing chains during folding folding, as a result of which reliable transportation and forward interaction are achieved without any special profiling of the edges of the bag opening.

[0009] EP 1 451 069 describes a similar method. In this document, the edge strip portions are also preformed with a series of holes that are lowered onto the upwardly directed pointed holding pins mounted on the support chains during folding folding so that reliable transport and forward interaction are achieved without any special profiling of the edges of the bag opening .

[0010] Common to all of these known systems is that the bag web is transported with a sequence of bags that are arranged in the longitudinal direction and are filled sequentially.

[0011] US 2003/0165278 A, EP 1733970 A, US 2004/0134166 A, WO 02/070349 A and DE 3839336 A describe filling various types of bags in bag webs with two rows of bags with a central support region extending longitudinally along the web from the film.

[0012] Over the years, there has been a tendency to increase the speed of filling and cheapen the manufacture of bags. Basically, this desire is observed in the methods described in the last two European patents, according to which the use of pins provides reliable transportation and promotes interaction. However, a similar tendency is present in other described known methods.

OBJECT OF THE PRESENT INVENTION

[0013] An object of the present invention is to provide a method for packaging products, liquid or bulk material in film bags that are transported in a continuous web through a filling station that provides a high filling speed.

[0014] Another objective of the present invention is to show a bag fabric that provides high speed filling and cheap manufacture of bags.

SUMMARY OF THE INVENTION

[0015] According to the present invention, this goal is achieved by the creation of the method indicated in the introductory part of the application, which is characterized in that the bag fabric is provided with a central support area extending longitudinally along the bag fabric, the central support area being formed as a fully or partially closed channel, this central supporting region connects bags that are located next to each other, across the canvas, and the Central supporting region is transported to supporting guide rail along the transport path of the conveyor through the filling station, and a peripheral region on the farthest from the center of opposite edges of the bag at the opening of two adjacent bags are shown in connection with a guiding guide means.

[0016] The device according to the present invention is characterized in that the supporting rail extends along the conveyor travel path through the filling station to support the bag web in a central support area extending longitudinally along the bag web and connecting the bags that are adjacent to each other across the web, that the supporting rail is made with the possibility of placement in a fully or partially closed channel in the Central supporting region of the canvas of the bags.

[0017] The bag web according to the present invention comprises a central support region extending longitudinally along the bag web and connecting bags that are adjacent to each other across the web, and wherein the central support region is formed as a fully or partially closed channel, and peripheral the areas at the farthest opposite the middle of the edges of the bag opening at two adjacent bags are made with the possibility of bringing in a guide connection with the guiding means.

[0018] The proposed method allows you to easily and significantly increase the speed of filling and at the same time reduce the cost of manufacturing and filling the bags only by providing a canvas bag, in which the bags are located next to each other symmetrically across the canvas. Thus, the canvas of the bags is two rows of adjacent bags. These two rows of adjacent bags are connected to a central supporting region extending longitudinally along the bag web.

[0019] This central support region rests on a support rail known from the method described in the two European patents EP 1 087 890 and EP 1 451 069. It is only necessary that such a support rail extend along the conveyor travel path through the filling station in order to supporting the web of two rows of adjacent bags in the filling station. The bags of each of these two rows are supported by a common central guide rail in their common central supporting region and are supported by guiding means in each of the peripheral regions at the farthest from the middle opposite edges of the bag opening at two adjacent bags.

[0020] Due to the fact that the central supporting region is formed as a fully or partially closed channel, a more reliable direction of the bag web is achieved. In addition, an advantage is achieved in that the different weights of the two adjacent bags will not cause the web to skew. By using the channel in the central supporting region, it becomes possible to fill two adjacent bags with contents of different weights. Also, bags can be filled at different times. Thus, the requirements for positioning filling filling funnels and similar filling equipment are more flexible than in a design in which the requirement of simultaneous filling of two adjacent bags is mandatory.

[0021] Thus, the guiding means can be designed according to the known techniques described above, and also the peripheral regions of the bags can be designed according to the known technologies. There is only a need to modify the filling station so that, for example, it has two filling units that fill two adjacent bags at the same time.

[0022] Thus, the carrier chains or similar guiding means can move along the conveyor path, and in the filling station they pull the two farthest from the middle edge of the bag in different directions, so that two adjacent bags are forced to open to allow food to be placed in these two bags on top or possibly on the side. Then the edges of the bag can be brought back together with the goal of their final closure and cutting off the filled bags.

[0023] At the end of the filling station, the guiding means can diverge in different directions so that the cut bags can be caught and removed, or can simply fall onto the conveyor belt.

[0024] It does not matter how accurately the transportation occurs, even if some stretching of the bag web occurs during movement, provided that the carrier chains provided with pins are used, since the bag web in this case is transported in complete synchronization with the carrier chains in a reliable manner.

[0025] According to one embodiment, the proposed method is characterized in that the peripheral regions at the farthest from the middle opposite edges of the bag opening at two adjacent bags are welded or welded to the central supporting region. Thereby, an improved direction of the farthest edges of the bag opening is achieved.

[0026] According to yet another embodiment, the proposed method is characterized in that the peripheral regions at the farthest from the middle of the opposite edges of the bag opening at two adjacent bags are free peripheral regions. This simplifies the manufacture of the bag itself, and at the same time, the free peripheral areas impose more stringent requirements for guidance during transport of the canvas bags through the device.

[0027] According to one embodiment, the device is characterized in that the support rail comprises an endless belt, tape or the like for supporting the web of bags. Belts or belts can thus facilitate the transport of the web of bags. However, it is usually preferable to use a smooth guide rail on which the web of bags moves by sliding.

[0028] According to yet another embodiment, the device is characterized in that the filling station comprises a first and second filling unit, or according to another embodiment, comprises a biased filling unit for filling two adjacent bags. The choice of the filling unit depends on whether the same product is placed in both bags, or according to another embodiment depends on whether the advantage achieved by the present invention is used, which consists in the possibility of filling two bags transported in parallel with different products .

[0029] According to another embodiment, the device is characterized in that the guiding means comprise: conveyor chains with protruding parts that freely extend from the conveyor chains and which can interact with perforations or holes in respective peripheral regions; a guide channel that can interact with the shoulder in the respective peripheral areas; guide rails that can interact with the channel in the respective peripheral areas; or clamping chains or tapes that can frictionally interact with corresponding peripheral regions. As indicated above, in the present invention can be applied options known from the prior art described in the introductory part of this application.

[0030] According to one embodiment, the bag web is characterized in that the peripheral regions at the farthest from the middle of the opposite edges of the bag opening at two adjacent bags are welded or welded to the central supporting region. Thereby, an improved direction of the peripheral regions farthest from the middle is achieved during their transportation through the device.

[0031] According to yet another embodiment, the bag web is characterized in that the peripheral regions at the farthest opposite middle edges of the bag opening at two adjacent bags are free peripheral regions. This approach simplifies the manufacture of the bag.

[0032] According to yet another embodiment, the bag web is characterized in that it is formed from a film web that is folded around the folding lines in the longitudinal direction of the bag web, said folding lines being spaced apart, generally comprising one fourth of the width of the film web, from each side the edges of the film web to form two adjacent bags. Thus, two adjacent bags can preferably be made of one film web without the need for combining several film canvases.

[0033] According to yet another embodiment, the bag web is characterized in that each of the peripheral areas of the bag web at the farthest opposite middle edges of the bag opening at two adjacent bags is provided with a series of perforation holes for the guiding means in the device of the present invention. Thereby, reliable and hard grip of peripheral areas is achieved.

[0034] According to yet another embodiment, the bag web is characterized in that each of the peripheral regions of the bag web at the farthest opposite middle edges of the bag opening at two adjacent bags is provided with a longitudinal collar for engaging with the guiding means in the device according to the present invention. The guiding means may include a channel or chain that provides frictional gripping around the bead.

[0035] According to yet another embodiment, the bag web is characterized in that each of the peripheral regions of the bag web at the farthest from the middle opposite edges of the bag opening at two adjacent bags is provided with a longitudinal channel for interacting with the guiding means in the device according to the present invention. The guide means may include guide rails that can be placed in these channels, and thus provide reliable direction of the peripheral areas.

[0036] Thus, in the practice of the present invention, structural details of the bag web and apparatus known from the two European patents EP 1 087 890 and EP 1 451 069 can be applied. Therefore, a detailed description of these parts is not given in this application.

[0037] Furthermore, in the above description, only webs of bags with two adjacent bags are indicated. However, the scope of protection of the present invention includes the possibility of increasing the number of adjacent bags in such a way that even three or four bags adjoin each other in the transverse direction and move through the filling device.

BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention will be described in more detail below with reference to the accompanying schematic drawings, in which a channel, as an essential feature of the present invention, formed in a central supporting region, is shown only in FIGS. 8-9, and wherein:

[0039] FIG. 1 shows a perspective view illustrating a method known from EP 1 087 890 with a bag web comprising a single row of bags;

[0040] FIG. 2 shows a perspective partial view of a bag web with two rows of adjacent bags in a partially open position in the bag web of the present invention;

[0041] FIG. 3 shows a partial top view of the canvas of the bags shown in FIG. 2, but with the bags in the fully open position;

[0042] FIGS. 4A-4F show six different possible bag webs according to the present invention;

[0043] FIGS. 5A-5C show sectional views illustrating three steps of inserting a bag web shown in FIG. 4A into a filling device;

[0044] FIG. 5D shows a perspective partial view of the bag web in a first step shown in FIG. 5A;

[0045] FIGS. 6A-6C show sectional views illustrating three steps of inserting a bag web shown in FIGS. 4B-4F into a filling device;

[0046] FIG.6D shows a perspective partial view of the canvas of the bags in the first stage shown in FIG.6A, with one area of welding;

[0047] FIG.6E shows a perspective partial view of the canvas of the bags in the first stage, shown in FIG.6A, with two areas of welding;

[0048] FIGS. 7A-7D show sectional views illustrating four alternative guide means in a device according to the present invention;

[0049] FIGS. 8A-8B show two additional possible canvas bags according to the present invention; and

[0050] FIGS. 9A-9C show sectional views illustrating three steps of inserting a bag web shown in FIGS. 8A and 8B into a filling device.

DETAILED DESCRIPTION OF THE INVENTION

[0051] In the description of the drawings, identical or corresponding elements are provided with the same symbols in the various drawings. Thus, all the details will not be described for each individual drawing / embodiment.

[0052] FIG. 1 shows the prior art and serves to illustrate the principle of constructing peripheral regions at the farthest opposite edges of the bag opening and the guide means configured to hold and guide peripheral regions at opposite edges of the bag opening.

[0053] FIG. 1 shows that a film material film 4 can be deployed from the supply roll 2, consisting of a double film folded around the lower edge 6 and connected along the upper edge by simple welding 8 without folding or thickening of any kind. Thus, it can also be a sleeve film. The web has a series of slots 10 that extend from the lower edge 6 to a point below the upper edge 8 so that the web is a mutually divided bag 12, the side edges of which are closed by the weld areas 14. Directly above the slots 10, the double web is incised along the corresponding horizontal lines 16 extending a short distance to either side of the corresponding slots 10.

[0054] Between the upper edge 8 and the notch lines 16, the peripheral regions 40 of the web comprise a single row of through perforations 18.

[0055] This is a preformed web 4, the shape of which in the feed unit from a roll is converted into a zigzag shape, is deployed by the filling unit on a support rod or rail 20 extending from the fixed supporting element 22 of the filling unit and serving as a simple support for the closed top edge 8 from canvas 4.

[0056] At a short distance in front of the support member 22, the support rod 20 has an upwardly projecting cutting member 24 which, when advancing the web, continuously cuts its upper edge, which is then placed on a continuous carrier system consisting of opposite parallel branches 26 of the chain conveyor, which are made with vertical holding pins 28, designed to interact with holes 18, made in the corresponding upper parts of the canvas, which are displayed in both orons and pressed by a pressure roller 30, which, after stringing the film web onto the pins, lowers these deployed upper edge regions of the web 4 onto the strongly supported carrier chains 26 of the conveyor for horizontally laying the web on the upper sides of the carrier chains and turning the holes 18 down so that the holes 18 are turned down and strung on the pins 18 of the chain conveyor. The pressure roller 30 has annular grooves 32 allowing free passage of the outer end parts of the pins 28 of the chain conveyor, and transverse pins (not shown) are integrated in these grooves, which, like a gear wheel, can interact with the pins 28 of the chain conveyor for automatic synchronous rotation pressure roller 30.

[0057] Thereafter, the opposite upper edge portions of the web 4 are securely secured to the carrier pins 28, and then the carrier chains can be guided along the necessary path for sequentially opening the bags, as indicated by 34, whereby the bags can be filled by means of a filling device 36, located above the open bag, and to close the bag after filling it. The filling device 36 is provided with a filling unit in the form of a filling nozzle 38. There is no need to describe this assembly in more detail. However, it should be noted that the pins 28 are provided on the midlines of the chains so that the bag web is not subjected to tensile stress or weakening in the spaces between the pins when changing direction.

[0058] The filled bags are freed from the rest of the web, which is rolled up as waste material, by closing the bags by welding directly under the upper region of the slots 10 and possible subsequent cutting.

[0059] It should be noted that, on the fixed support member 22, a guiding body in the form of a two-winged plow is preferably provided which actively causes or initiates the unfolding of the perforated regions of the peripheral edge of the web shown in the drawing, as a result of which improved reliability with respect to an important function can be achieved, which consists in turning the holes down to the pins 28.

[0060] FIG. 2 shows a device according to the present invention in which a bag web with two adjacent bags 12 is used. The peripheral regions 40 of the bag 12 farthest from the middle have perforations 18 that provide fixation to the holding pins 28. The sides of the bag, which located close to each other, contain peripheral areas forming a Central supporting region 42, extending longitudinally along the canvas of the bag. The central supporting region 42 is located on the supporting rail 20. According to the present invention, the supporting rail 20 extends a distance comparable to the length shown in FIG. 1. Thus, the support rail 20 extends along the conveyor path through the filling station 44 in which the filling device 36 is located. The filling device 36 has two adjacent filling nozzles 38 for simultaneously filling two adjacent bags 12.

[0061] In the portion of the production line before the partial view shown in FIG. 2, the film web can be processed by the system described above and shown in FIG. 1. In the section of the production line after the partial view shown in FIG. 2, the bag web can be closed and cut in a manner similar to that described above in connection with the bag web shown in FIG. 1.

[0062] FIG. 3 shows a view corresponding to the view shown in FIG. 2, but when viewed from above. Here it is shown how the bags 12 are displaced in a direction from each other so that they are now fully open. In this section of the production line, bags 12 are located in filling station 44 (not shown in FIG. 3 for clarity).

[0063] Bags 12 have side edges that are closed by welding 14.

[0064] FIGS. 4A-4F illustrate various possible methods for folding bag webs according to the present invention. The central support region 42 serves to connect two adjacent bags 12. The central support region 42 also serves to support the support rail 20 when the bag is inserted into the device according to the present invention.

[0065] FIG. 4A shows that the two outermost peripheral regions 40 farthest from the middle are provided in the form of free edge regions that are not bonded to each other or to the supporting region 42.

[0066] FIG. 4B shows a state in which peripheral regions 40 are attached to the central supporting region 42 by welding 46.

[0067] FIG. 4C shows how two opposing peripheral regions 40 can be welded by one welding region 48. This single weld region 48 may additionally be made with or without a connection to the central support region 42.

[0068] FIG. 4D shows how these two weld areas 46 can be made in the form of separate weld areas.

[0069] FIG. 4E shows yet another embodiment, according to which only one welding region 46 ′ is provided that simultaneously fastens the two outermost peripheral portions 40 farthest from the middle with the central supporting region 42.

[0070] FIG. 4F shows how a weld region 48 can be used to join together the free peripheral regions 40 without being connected to the central supporting region 42.

[0071] FIGS. 5A-5C show how the bag web moves and the bags open when inserted into the packaging device. FIGA shows two cloths of the bags without opening them and relying on the support rail during their movement to interact with the guiding means.

[0072] FIG. 5B shows a position in which the bag web is engaged with guiding means in the form of pins 28 cooperating with perforations in the outermost peripheral regions 40 farthest from the middle.

[0073] FIG. 5C shows how the guiding means bias the farthest opposite middle edges of the bag opening from one another so that the bags 12 open for filling.

[0074] FIG. 5D shows a perspective view corresponding to that shown in FIG. 5A to illustrate hanging and supporting the web of bags with two adjacent bags 12 on a support rail 20 by a central support region 42.

[0075] FIGS. 6A-6E show views corresponding to the views shown in FIGS. 5A-5D. The differences are that the outermost peripheral regions farthest from the middle are not free, but are welded together by the method described above and shown in FIGS. 4B-4F. According to this design, the weld areas 46 and 18 respectively form guide channels 50 in which additional guide rails 52 are arranged extending parallel to the guide rail 20. This design provides improved guidance when transporting the web of bags to the filling device. Cutting is performed in the filling device as described above with reference to FIG. 1 so that the channels 50 open, as a result of which the peripheral regions 40 farthest from the middle can interact with guide means in the form of pins 28.

[0076] FIGS. 7A-7D show alternative implementations of guide means.

[0077] FIG. 7A shows a structure in which the outer peripheral regions 40 are provided with a collar 54 directed into the channel 56, which provides fixation in the filling device and serves to hold and guide the peripheral regions at the farthest from the middle opposite edges of the bag opening while advancing the bag through the filling station.

[0078] FIG. 7B shows that the outer peripheral regions 40 are provided with a channel 58. The channel 58 holds and guides the peripheral regions 40 along the transport path through the filling station.

[0079] FIG. 7C shows how the outer peripheral regions 40 are brought into engagement with the gripper chains 62. The gripper chains 62 can hold and guide the peripheral regions by compressing the edges of the bags along the conveyor path through the filling station. These guide means 64, for example, may contain cords or the like, which can hold and guide peripheral regions 40.

[0080] FIGS. 8A-8B show two additional methods for folding the bag webs according to the present invention.

[0081] In the central support region 42 connecting the two adjacent bags 12, a closed passage 65 is provided that serves as a support on the support rail 20 when the bag webs are inserted into the device of the present invention.

[0082] FIG. 8A shows that the closed channel 65 is formed by welding a separate film strip 66, which is attached by two welding regions 67 to the film web 4 used to form the bags 12.

[0083] FIG. 8B shows an embodiment according to which a closed channel 65 is formed. The film web 4 is provided with a crease 68 forming a channel 65 which is closed by the weld region 69. FIGS. 8A and 8B show closed channels since the weld areas 67 and 69 are through weld areas extending along the entire length of the film web 4. However, according to another embodiment, spot weldings can be applied such that the channel functions as a closed channel.

[0085] The views of FIGS. 9A-9C correspond to the views of FIGS. 6A-6D. The difference according to this embodiment is that the central supporting region 42, which is located on the supporting rail 20, in this embodiment is made in the form of a closed channel 65. This prevents the risk of skewing the film during pulling due to the uneven filling of two adjacent bags 12 .

 [0086] The guide rail described in various embodiments may be a smooth rail along which the central supporting region slides. According to another embodiment, the guide rail may comprise belts, chains or the like, providing an endless cycle so as to carry the bag web along the conveyor path to and through the filling station.

Claims (21)

1. The method of packaging products, liquid or bulk material in film bags, which are transported through a filling station in the form of a continuous bag of bags, the openings of the bags being kept open for receiving products, after which the bags are closed and separated from the fabric, while according to the proposed method, the fabric bags initially in the area along the edges of its holes, is brought into the guide connection with the guiding means, made with the possibility of clamping and direction of the periphery areas at opposite edges of the bag opening along the conveyor moving path through the filling station, so that as a result of this movement, the guiding means cause the separation of the edges of the bag opening for subsequent opening of the bags in the filling station and then, after filling the bags, connect the edges of the bag opening to close the bags, according to the proposed method, the opposite edges of the opening of the bag are mutually deployed, and the canvas of the bags is introduced into interaction with the guides by transporting the bags on the support rail, while the guiding means ensure that the web of bags is held along the path of transportation through the filling station, the guiding means comprising: conveyor chains with protruding parts extending freely from the conveyor chains and configured to interact with perforations or holes in relevant peripheral areas; a guide channel configured to interact with the shoulder in the respective peripheral areas; guide rails configured to interact with the channel in respective peripheral areas; or clamping chains or tapes made with the possibility of frictional interaction with the corresponding peripheral regions,  characterized in that the canvas of the bags is provided with a central supporting region extending along the canvas of the bags, said central supporting region being formed as a fully or partially closed channel, and a central supporting region connecting the bags that are adjacent to each other across the canvas, while the central supporting region the area is transported on a support rail along the conveyor movement path through the filling station, and the peripheral areas at the farthest from sulfur Dines of opposite edges of the bag opening at two adjacent bags are brought into directing interaction with the guiding means. 2. The method according to claim 1, characterized in that the peripheral areas at the farthest from the middle of the opposite edges of the bag opening at two adjacent bags are connected by welding or soldered to the Central supporting region. 3. The method according to claim 1, characterized in that the peripheral areas at the farthest from the middle of the opposite edges of the bag opening at two adjacent bags are free peripheral areas. 4. A device for packaging products, liquid or granular material in bags of film, which are moved through the filling station in the form of a continuous cloth bags, and the openings of the bags are kept open for receiving products, after which the bags are closed and separated from the canvas, while according to the proposed method the canvas of the bags is initially and along the edges of its opening is brought into a guiding connection with guiding means made with the possibility of clamping and directing the peripheral regions to the opposite edges of the bag’s opening along the conveyor’s travel path through the filling station, so that as a result of this movement, the guiding means cause the edges of the bag’s opening to separate the bags in the filling station and then, after filling the bags, connect the edges of the bag’s opening to close the bags, according to the proposed method, the opposite the edges of the opening of the bag are mutually deployed, and the canvas of the bags is introduced into interaction with the guiding means by trans porting the bags on the supporting rail, while the guiding means ensure that the canvas of the bags along the path of transportation through the filling station, and the canvas of the bags is provided with a Central supporting region passing along the canvas of the bags, and the specified Central supporting region is formed as a fully or partially closed channel, and the Central a supporting region connects bags that are adjacent to each other across the web, with the central supporting domain is transported on the supporting rail along the transport path of the conveyor through the filling station, and a peripheral region on the farthest from the center of opposite edges of the bag at the opening of two adjacent bags shown in guiding engagement with guide means, the inventive device comprises: - a feed roll containing a prefabricated film web of film material; - a filling station in which the openings of the bags are kept open for receiving products; - guiding means configured to clamp and guide peripheral regions on opposite outer edges of the bag opening along the conveyor moving path through the filling station, so that as a result of this movement, the guiding means cause the edges of the bag opening to separate to further open the bags in the filling station and then after filling bags again connect the edges of the opening of the bag to close the bags; - a supporting rail for introducing the canvas of the bags into interaction with the guiding means, characterized in that the supporting rail extends along the conveyor travel path through the filling station to support the bag web in a central support area extending longitudinally along the bag web and connecting the bags that are adjacent to each other across the web so that the support rail is fully or a partially closed channel in the central supporting region of the bag web, the fact that the filling station comprises first and second filling blocks or, according to another embodiment, comprises a biased filling block for filling two adjacent bags, and the fact that the guiding means comprise: conveyor chains with protruding parts extending freely from the conveyor chains and configured to interact with perforations or holes in the respective peripheral areas; a guide channel configured to interact with the shoulder in the respective peripheral areas; guide rails configured to interact with the channel in respective peripheral areas; or clamping chains or tapes made with the possibility of frictional interaction with the corresponding peripheral regions. 5. The device according to claim 4, characterized in that the supporting rail includes an endless tape or tape for supporting the canvas of the bags. 6. The canvas bag for use in the method according to claim 1, containing an adjacent sequence of bags separated by slots extending from the lower edge of the fabric to a point below the upper edge of the fabric, and the side edges of the paintings are closed by welding areas, while the canvas of the bags contains a Central supporting area extending longitudinally along the canvas of the bags and connecting the bags that are adjacent, across the canvas, characterized in that the central supporting region is formed as a fully or partially closed channel; and peripheral areas at the farthest opposite the middle of the edges of the opening of the bag at two adjacent bags made with the possibility of bringing in a guide connection with the guiding means. 7. The bag canvas according to claim 6, characterized in that the peripheral regions at the farthest from the middle opposite edges of the bag opening at two adjacent bags are connected by a welding area or soldered to a central supporting area. 8. The canvas bag according to claim 6, characterized in that the peripheral regions at the farthest from the middle of the opposite edges of the bag opening at two adjacent bags are free peripheral regions. 9. The bag fabric of claim 8, wherein the bag fabric is formed from a film web folded around the folding lines in the longitudinal direction of the bag web, said folding lines being spaced apart, generally corresponding to one quarter of the width of the film web, measured from each the lateral edge of the film web to form two adjacent bags. 10. The bag canvas of claim 8, wherein each of the peripheral regions of the bag web at the farthest opposite middle of the bag opening edges of two adjacent bags is provided with a series of perforation holes for the guiding means. 11. The bag canvas according to claim 8, characterized in that each of the peripheral regions of the bag web at the farthest from the middle opposite edges of the bag opening at two adjacent bags is provided with a longitudinal shoulder for interaction with the guiding means. 12. The bag canvas of claim 8, characterized in that each of the peripheral areas of the bag web at the farthest from the middle opposite edges of the bag opening at two adjacent bags is provided with a longitudinal channel for interaction with the guiding means.

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