• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A tube formation station (1) for forming tubing from a flat sheet material (2) having baffles for turning over a first side region and a second side region of the flat web material such that the side edge of the second side region rests on the edge of the first side region, and a device for joining the overlapping ones Areas wherein the tube formation is feasible with a flat sheet material containing a nonwoven plastic material.
    公开号:AT14551U1
    申请号:TGM384/2014U
    申请日:2010-07-22
    公开日:2016-01-15
    发明作者:
    申请人:Windmöller & Hölscher Kg；
    IPC主号:
    专利说明:

    Description: [0001] The invention relates to a hose forming station for hose formation from a flat web material.
    There are bags and bags comprising plastic nonwoven material known. DE 10 2007 018 579 A1 describes building material bags comprising plastic fleece. This plastic fleece forms a layer of a bag wall. The second layer is formed by a film. The fleece forms the outer layer of the bag wall. In this application, a manufacturing method for the bag walls is given. However, a method for the production of sacks or bags of the cited document is not apparent. A plastic fleece is an arrangement of plastic fibers which are pressed together, partly under the action of heat.
    The object of the present invention is to propose a device with which the starting material for the production of sacks or bags can be produced, which comprise plastic fleece.
    The object is achieved by a device according to claim 1.
    Accordingly, a hose forming station (1) for hose formation of a flat web material (2) is provided with guide elements for turning over a first side region and a second side region of the flat web material, so that the side edge of the second side region rests on the edge of the first side region, and with a device for connecting the overlapping regions, wherein the tube formation is feasible with a flat sheet material containing a nonwoven plastic material.
    The flat sheet material contains plastic nonwoven material is single-layered and can be single or multi-layered. In this patent application, a distinction is made between layers of the material and layers of the semi-finished products and finished products. The layers consist of materials of different properties, with multilayer flat web material, these layers are usually connected to each other flat.
    The flat web material is advantageously provided as flat web winding available. Such a coil is an advantageous storage form because it is compact, and is easy to handle when removing the material. The unwinding of the material takes place in an unwinding device.
    The flat material is now fed to a tube forming device, in which from the flat material, a tube is formed, in which the side edges are folded so that they then overlap in an overlap region. For this purpose, the flat web material by means of suitable transport elements, such as transport roller pairs, preferred and / or advanced. Appropriately placed guide elements, for example baffles, can now hold a portion of the web at the transport level, while other guide elements envelope the side areas. In this case, the first side area is advantageously turned over in front of the second side area, so that the side edge of the second side area rests on the edge of the first, already completely turned over side area. During the overlapping, the overlapping areas are connected together. In this way, a tube is produced with a longitudinal seam.
    For later production of sacks or bags then the tube thus produced can be separated in a further production step to pieces of tubing. This process takes place in a suitable separating device. This may be a mechanical cutting tool as well as a non-contact cutting device (laser beam cutting device, water jet cutting device). Many other separation devices are conceivable here.
    Each individual piece of hose can now be transported by means of a transport device to allow the molding of a soil at least one end of the hose piece. For this purpose, a bottom formation device is available. If a bottom is to be formed at both ends, then there is a bottom formation device, in which the hose pieces are transported transversely to their direction of extension. However, if a bottom is to be formed only at one end, this can be done in the same way, in which case a part of the bottom forming device remains inactive. In this case, however, it is also possible to provide devices which transport the hose piece along its direction of extent. However, the work steps required for soil formation are independent of the orientation of the tube pieces relative to the transport direction.
    To connect the two overlapping after impacting areas in the formation of the tube they must be connected together in a suitable device and with a suitable method. Various joining methods are conceivable. It should be noted that now the sequence of layers of the two layers is the same, so that, for example, a nonwoven inner layer and a plastic outer layer are superimposed. It is therefore particularly advantageous to provide for this purpose an extrusion device, with which liquid plastic is extruded onto the subsequent connection surface. This method lends itself to the connection of various layers, such as the fleece and the plastic material.
    In this case, the extrusion device is to be arranged as possible at a location where already the first side area is turned over. Now the extrudate can be applied and then the second side area can be placed on the first side area. Advantageously, a subsequent pressing device is provided, with which the Extrudatverbin-tion is pressed again. If necessary, a cooling device can also be provided for cooling the extrudate and thus the connection.
    But it may also be advantageous, depending on the ingredients of the layers, the application of other joining methods. For example, the nonwoven may comprise plastic fibers. In this case, the hot air sealing can be an easy to use method, in which a hot air nozzle which can be regulated at least with respect to the hot air temperature can be provided. This hot air nozzle should be located at a point behind which the side areas to be connected touch. The hot air nozzle causes the plastic of the nonwoven fabric and the plastic layer to melt, so that an immediate subsequent compression of the joint seam causes a permanent connection. If, however, the nonwoven layer does not comprise a material suitable for this purpose, it is conceivable to provide a side edge on both sides of the material layer with a plastic layer, the plastic layer on the second side having only the width of the overlapping region.
    Further joining methods are conceivable. Thus, instead of an extrudate, an adhesive can be applied. Also known per se ultrasonic welding methods can be used. It is also conceivable the use of electromagnetic radiation, ie of light.
    In a further advantageous embodiment of the invention is provided, the resulting longitudinal seam, so to cool the overlap of the side areas. This is done with a suitable cooling device. Thus, for example, a pressure roller, which ensures the compression of the seam, be cooled, so that at the same time a cooling takes place. The pressure roller can be traversed by a cooling medium.
    The plastic nonwoven material is permeable to many gases. This material property is particularly important when filling the later resulting bags, where the existing air must be able to escape. However, the described plastic coating prevents the escape of air. Therefore, in a particularly advantageous embodiment of the invention is provided to perforate the flat web material and / or the hose, which can be done with a suitable perforating device, such as a needle roller. It is important, however, that the perforation takes place before the tubing is singulated into pieces of tubing since, after singulation, the handling of the tubing pieces for the perforation is more complicated.
    After separation of the tube to pieces of tubing, the bottoming can follow. For this purpose, a piece of hose is transported through the bottom forming device comprising various processing stations. In a first such station, first one or both ends of the tube piece are pulled open. In this case, a layer can be raised and folded back on itself by 180 degrees, wherein a fold line is formed, which can be previously embossed with a suitable embossing tool. But it can also be raised both layers by 90 degrees. In this case, the entire end may have already been folded over once by 90 degrees. In both types mentioned, the tabs and triangular pockets thus produced lie in the plane of the tube piece. The open ground is now easily accessible from above. In one alternative, both layers can be folded by 90 degrees without the end being folded down beforehand. The plane of the open bottom is now orthogonal to the plane of the tube piece. This procedure is suitable for certain sack formats in which the later tube body has only a small extension.
    After the bottom opening, the bottom closure, in which the outer regions of the tabs are folded back. For this purpose - similar to the hose formation already described above - guide elements can be provided. The folded edges can also be pre-stamped by suitable embossing tools. The two tabs overlap each other with their side edges and are interconnected with each other and / or with areas of the triangular pockets. For this purpose, similar joining methods and joining devices can be used, as they have already been described in connection with the hose formation.
    During the bottoming further workpieces can be fixed in or on the resulting soil. In particular, this is a piece of tubing or a valve sheet. Both elements are in the finished bag a valve. After the bottom closure, it is possible to apply a bottom cover sheet, which on the one hand strengthens the ground, but also on the other hand again connects the triangle pockets and the tabs embarked.
    The webs or workpieces from which valves and / or ground cover sheets are formed, in contrast to the flat web material multilayer and in each case be provided on the outside with a plastic coating. Only one or more inner layers comprise a plastic fleece. As a result of this measure, the bottom has a higher rigidity in comparison to the rest of the bag, so that the bag can be more easily grasped, opened and / or filled in bag filling devices.
    In a particularly preferred embodiment of the invention, a flat web material is used, which is composed of at least two layers. A first layer comprises the plastic nonwoven material, while a second layer is a plastic coating. Advantageously, this plastic layer is an outer layer. It may for example be laminated or extruded onto a nonwoven material. To produce the bottom cover sheets and / or the valve material, a part of the flat web material thus produced can be coated again from the second side, so that a two-sided coating is formed.
    In a further advantageous embodiment of the invention, the tube is now formed so that the plastic layer is outside of the tube formation. If the material has two layers, the nonwoven layer is therefore inside. This procedure offers advantages in the molding of a floor. Thus, the later triangular pockets on their outsides also on the plastic coating, so that after the folding back of the bottom flaps, the plastic layers of the triangle pockets are folded on itself. This allows joining by means of a hot air welding process, in which the plastic layers are melted and form a firm connection after pressing and cooling.
    The plastic layers of the folded back tabs now have to the outside. Hereupon, bottom cover sheets can now be applied, preferably welded, in which the plastic layer faces the tabs. Overall, a very durable bag bottom can be formed in this way, since essentially plastic layers of
    Components are connected together.
    Further embodiments of the invention will become apparent from the subject description and the claims.
    The individual figures show: FIG. 1 Schematic diagram of a hose formation made of nonwoven material FIG. 2 Schematic diagram of sack formation from a hose with nonwoven material FIG. 3 Schematic diagram of a sack formation from flat web material [0029] FIG 1 shows a schematic diagram of the hose formation from a non-woven material. This hose formation takes place in a hose forming station 1. The hose forming station 1 is supplied with a flat web material 2, which is provided in the form of a roll 3. This roll 3 can rotate on or with a winding support 4, which is stored, for example, in the machine frame of the hose forming station or in the frame of an unwinding station.
    The flat sheet material 2 comprises in the illustrated embodiment, to which the present invention is not limited, two layers. The first layer comprises a plastic material and is marked with the letter A since this layer is directed outwards after the tube has been formed. The second layer, which faces inwards after the formation of the tube, is marked with the letter I. The layer I consists of a nonwoven material. This is illustrated in the figure by irregular and uneven lines.
    The flat web material 2 is transported by one or more preferential and / or feed devices in the transport direction z. Preferred or feed devices that may include transport roller pairs are not shown in the figure 1. After unwinding, at first one side of the flat web material 2 is transferred to itself by means of a baffle 5. It can also be provided more guide elements for the simultaneous formation of gussets, which, however, are not shown.
    Shortly after the beginning of the turning over of the first side of the flat web material 2 and its second side is turned over. Both sides are hammered in so far that the margins are then on each other. The turning over of the second side takes place again with a guide element, which can be configured like the guide plate 5. This guide element is not shown for clarity.
    Before touching the two side edges, the first side edge on the outside, which comes into contact with the second side edge, a treatment is performed, which serves to connect the two side edges. In the figure 1, an extrusion device 6 is shown, with which a plastic melt is applied to the edge of the first page. Immediately afterwards, the second side is applied with its inside on the first side. Here, a nonwoven layer is connected to a plastic layer, wherein the plastic melt causes a very strong connection. The applied extrudate 7 is shown in FIG. 1 as a thick line.
    The extrusion device 6 comprises an extrusion head 8 to which the plastic melt is supplied via supply lines, not shown. The extrusion head 8 can be mounted displaceably in the direction of the double arrow B transversely to the transport direction of the flat web material 2. For this purpose, a traverse 9, which can be fixed in the machine frame of the tube forming station 1 is used.
    After the orders of the extrudate and the application of the second side, the joint seam can be additionally pressed with a pressing device 10. This pressing device advantageously comprises a pressure roller 11, which may be part of a press roller pair. The pressure roller 11 is rotatable about an axis or shaft 12 relative to the machine frame. The pressure roller can also be used to cool the joint seam who the. The roller may be designed so that it can be flowed through by a cooling medium. Upon contact of the roller, this can then dissipate heat from the joint seam, so that the joint seam has a sufficient durability faster. However, other cooling methods and devices are conceivable, such as a device for inflating cooling air.
    After pressing the joint seam, the resulting tube 13 can be wound onto a new roll 14 of a winding station 15.
    To ensure the subsequent venting of the bag during or after its filling vents must be provided. For this purpose, a perforating device 28 is provided, which may comprise a perforating roller 29, which rotates relative to the machine frame and can carry needles 30 on its outer circumference, which penetrate into the hose material and can thus produce ventilation holes. Also in other ways, such as non-contact, working perforating are conceivable. The arrangement of the perforating device is not limited to the arrangement shown. The perforating device can also be arranged in front of the actual tube forming device. An arrangement directly in front of the separator is conceivable. In any case, however, the perforation must be done prior to separation of the tube to pieces of tubing.
    In the figure 2, the processing steps for the formation of individual bags from the tube 13 are now shown. This hose, which was transported as a winding 14 from the hose forming station 1 into the unwinding device 16, is separated into individual hose pieces 18 by means of a separating device 17 which, for example, comprises a cutting blade which can be displaced transversely to the initial transport direction y.
    Subsequently, the transport direction of the tube pieces 18 is changed, so that they are now transported transversely to their extension direction, which points in the direction y, in the direction z on. Flierzu a transport device 19 is provided, which may be configured for example as a double belt conveyor.
    In the first processing step a for the formation of the sack bottoms, which takes place in the Bodenauf-drawing station, the hose piece ends are first raised. This step can be done by means of suckers, which pull the two layers slightly apart at the ends. With spreaders, the layers can now be brought into a plane and struck, wherein the soil is folded down along the so-called bottom center line 20. The thus drawn up ends now form a bottom rectangle 21 with lateral triangular pockets 22. In FIG. 2, only the corresponding elements of the lower end of the tubular piece 18 are provided with reference numerals. These apply analogously, however, also for the other end of the hose piece. In the figure it can be seen that in the case of the triangular pockets, the plastic layer points outwards, whereas in the bottom rectangle the nonwoven layer is visible.
    In the processing step b, a valve sheet 23 can now be applied to an open end of the hose piece 18 and fastened there. The fastening is advantageously carried out by means of hot air welding, wherein the valve sheet 23 is attached at least to the triangular pocket 22.
    In the processing step c, the outer tabs 24 of the ground right 21 are now folded back so far that the outer edge of a tab 24 is moved over the bottom center line 20 of time. The folding back takes place, for example, with guide elements, such as baffles. The areas of the triangle pockets, which are also folded back in this process, can be connected to each other. Instead of the outer tabs 24 and the inner tabs 25 can be folded back.
    However, the folding back of the inner tabs 25 is preferably carried out in step d, wherein now the inner flap 25 covers the outer flap 24 in a covering area. In this overlapping area, both tabs can be connected to each other, so that a usable bag bottom has already been created. Since the valve sheet 23 has also been hammered in, a valve hose has been created in this way, which makes it possible to fill the bag, but avoids leakage of the filling material after filling.
    In a particularly preferred embodiment of the invention, a further processing step e takes place, in which a bottom cover sheet 26 is applied to the already closed trays and is preferably fastened by means of a hot air welding process. The bottom cover sheet 26 is preferably dimensioned so that it covers areas of the tabs 24 and 25 as well as areas of the triangular pockets 22. It is also placed with its plastic layer on the floor, so that the plastic layers are facing each other. This allows a very durable connection, which can be produced by hot air welding. In the region of overlap of the tabs 24 and 25, the tab 25 may be provided with cutouts, so that the bottom cover sheet 25 has a direct contact with the tab 24 in the region of this overlap. Similarly, direct contact of the bottom cover sheet 26 with the valve sheet 23 can be made.
    3 shows in a schematic representation again the individual process steps for the production of bags from a flat web material. In this embodiment, however, is dispensed with the winding of the hose, the transporting of the roll and the re-unwinding of the hose. Instead of these devices, a deflection device 27 is provided, which deflects the finished tube 13 from the transport direction z in the transport direction y. This deflection device is displaceable along the double arrow C in or counter to the direction z, so that the position of the side edge after the deflection in or against the direction z is variable.
    FIG. 3 additionally shows a method step f, in which a plurality of bags are stacked before they are packed, for example, in a transport container.
    权利要求:
    Claims (18)
    [1]
    Claims 1. A tube forming station (1) for tubing of a flat sheet material (2) with guide elements for turning over a first side region and a second side region of the flat web material, so that the side edge of the second side region rests on the edge of the first side region, and with a device for connecting the overlapping regions, wherein the tube formation is feasible with a flat sheet material containing a nonwoven plastic material.
    [2]
    Second hose forming station according to claim 1, characterized in that the flat web material is provided as a flat web winding.
    [3]
    3. tube forming station according to one of the preceding claims, characterized in that the guide elements are baffles.
    [4]
    4. tube forming station according to one of the preceding claims, characterized in that the device for connecting the overlapping areas comprises an extrusion device, with which liquid plastic is extruded onto the subsequent connection surface.
    [5]
    5. tube forming station according to the preceding claim, characterized in that the extrusion device is arranged at a location at which already the first side area is turned over.
    [6]
    6. tube forming station according to one of the two preceding claims, characterized in that one of the extrusion device following compression device is provided.
    [7]
    A hose forming station according to any one of claims 1 to 3, characterized in that the device for connecting the overlapping regions comprises a hot air nozzle for hot air sealing the overlapping regions.
    [8]
    8. tube forming station according to the preceding claim, characterized in that the hot air temperature of the hot air nozzle is adjustable.
    [9]
    9. tube forming station according to one of claims 4 to 8, characterized in that a cooling device for cooling the resulting longitudinal seam, so the overlap of the side regions, is provided.
    [10]
    10. tube forming station according to the preceding claim, characterized in that the cooling device comprises a pressure roller for pressing the seam, which is cooled.
    [11]
    11. tube forming station according to the preceding claim, characterized in that the pressure roller can be flowed through by a cooling medium.
    [12]
    12. tube forming station according to one of the preceding claims, characterized in that the flat web material comprises two layers.
    [13]
    13. tube forming station according to one of the preceding claims, characterized in that the flat web material comprises a first layer and a second layer, wherein the first layer comprises a plastic material and the second layer consists of a nonwoven material.
    [14]
    14. tube forming station according to the preceding claim, characterized in that after the tube formation, the plastic material is directed to the outside and the nonwoven material to the inside.
    [15]
    15. tube forming station according to one of the two preceding claims, characterized in that the nonwoven material of the second side region is connected to each other with the plastic material of the first side region.
    [16]
    16. tube forming station according to one of the preceding claims, characterized in that a winding station is provided, with which the hose is wound on a winding.
    [17]
    17. tube forming station according to one of the preceding claims, characterized in that a perforating device for the preparation of ventilation holes in the flat sheet material and / or in the hose is provided.
    [18]
    18. tube forming station according to the preceding claim, characterized in that the perforating device comprises a perforating roller which rotates relative to the machine frame of the tube forming station and carries on its outer periphery needles. For this 2 sheets of drawings
    类似技术:
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    DE102010039770A1|2012-03-01|Method for manufacturing bag e.g. cross bottom bag, from tube pieces made of plastic material to transport construction materials, involves connecting bottom cover sheet made of partially air-permeable material with straps and/or pockets
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    EP2186742A1|2010-05-19|Film packaging bag, especially for powdery, dusty filling goods
    DE102014206792A1|2015-10-08|Packaging and method and apparatus for producing a packaging
    EP3519311A1|2019-08-07|Plastic bag, in particular ffs bag, and method and device for producing and filling a bag
    EP3126120B1|2019-05-15|Method and apparatus for producing bags from a woven-fabric tube
    DE102008021505A1|2009-11-05|Packaging container i.e. side gusseted bag, manufacturing method, involves applying base part on inner wall area of web section, and connecting part with web section for forming prefabricated web, where container is separated from web
    DE102019213476A1|2021-03-11|Cross-bottom sack made of coated paper and a method for producing a cross-bottom sack
    DE102016207160A1|2017-11-02|Apparatus and method for producing a bag package
    AT15140U1|2017-01-15|Method and device for producing sacks or bags as well as sacks or bags
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    DE1170763B|1964-05-21|Device for the continuous production of multi-layer bags
    同族专利:
    公开号 | 公开日
    HUE035849T2|2018-05-28|
    ES2653237T3|2018-02-06|
    EP2464510A1|2012-06-20|
    CN103003061A|2013-03-27|
    EP2464510B1|2017-10-25|
    WO2011018318A1|2011-02-17|
    CN103003061B|2016-09-07|
    DE102009036556A1|2011-02-17|
    DE202010018210U1|2014-12-18|
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    法律状态:
    2020-09-15| MK07| Expiry|Effective date: 20200731 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102009036556A|DE102009036556A1|2009-08-10|2009-08-10|A method and apparatus for making a sack or bag with nonwoven material, and a sack or bag comprising nonwoven material|
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