• 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:
    In a method for making sacks from a fabric, a flat fabric tube is provided comprising a sack front wall and a sack rear wall lying flat on each other, the flat sock tube being fed to a cutter in which the fabric tube is cut to individual tubular sack bodies whereupon the tubular bag bodies are closed at at least one open end by turning over an end section of the fabric, the cutting of the fabric tube being carried out in a long transporting step in which the fabric tube or tubular bag bodies are transported in the longitudinal direction of the fabric tube, and closing the bag body preferably takes place in a transverse transport section, in which the bag bodies are transported in a direction of transport extending transversely to their longitudinal direction. The closing of the bag body is carried out by turning over a flap formed from the bag rear wall after the flap has been exposed in the longitudinal transport section by cutting out a portion of the bag front wall.
    公开号:AT514545A4
    申请号:T604/2013
    申请日:2013-07-26
    公开日:2015-02-15
    发明作者:Herwig Dipl Ing Worff
    申请人:Herwig Dipl Ing Worff；
    IPC主号:
    专利说明:

    The invention relates to a method for producing bags from a fabric in which a flat fabric tube is provided which comprises a bag front wall and a bag back flat to each other, and the flat fabric tube is fed to a cutter in which the fabric tube is cut to obtain a single tubular bag body whereupon the tubular bag body is closed at at least one open end by turning over an end portion of the fabric, the cutting of the fabric tube being carried out in a longitudinal transporting step in which the tubular bag body is transported in the longitudinal direction of the fabric tube, and the bag body is preferably closed in a transverse transport section; in that the bag bodies are transported in a transport direction transverse to their longitudinal direction.
    The invention further relates to an apparatus for carrying out this method.
    The tubular body of a bag is usually formed of a tube-like tubular material or a flat material connected to a tube. A rough classification of such bags is made by the distinction in pillow and box shape. A pillow form of bags is usually made by assembling the floors with a textile seam or a weld.
    The fabric preferably consists of monoaxially stretched polymer, in particular polyolefin or polypropylene tapes. These tapes are made by stretching polymer, especially polyolefin or
    Polypropylene films are usually prepared four to ten times, whereby the molecular chains are aligned in the ribbon longitudinal direction and have in these directions about six to ten times the strength of the original film. The ribbon width is usually about 1.5 to 10 mm, the thickness of 20 to 80 pm.
    A method and a device of the type mentioned in the introduction are known, for example, from WO 2010/086232 A1. Such a device generally comprises first a hose-forming device for producing and providing a tubular material. There may also be only one tube unwinding device. This is usually populated with a material wrap on which tubular material is wound. From this material wrap the material is usually continuously withdrawn in the longitudinal direction. In the bag making process according to the prior art machines, the web tube provided by the tube forming device or by the tube unwinding device is fed to a cross cutting device which singulates the tube tube into individual tube pieces. The tubular bag bodies are transferred to a transport device. With the aid of this transport device, a change of the transport direction from a longitudinal transport in which the hose or pieces of tubing are transported in the direction of their longitudinal axes is usually effected in a transverse transport, in which the tube pieces no longer travel in the direction of their hose longitudinal axis, but transversely thereto so that at least one end of the tube pieces are laterally accessible for at least one-sided closing of the sack or for producing a sack bottom, respectively. The original and the new transport direction of the Schlauchebzw. the hose piece are usually perpendicular to each other. The at least one-sided closing of the bag takes place, for example, by applying a seam in the transverse direction of the bag. Alternatively, a bottom fold may be made to obtain a rectangular bottom.
    In the case of a needle-shaped textile seam, the disadvantage is that the bag contents can escape via the seam perforations. In addition, the suture perforation of the tissue causes weakness so that the sack can rupture at the interface. In addition, the machine construction of the needle-punched fabric is associated with a number of problems, such as the risk of needle breakage and tearing of the thread used for the seam. Another drawback is the sewing speed limited by the sewing head, so that with currently available machines it is possible to process only about a maximum of about 40 to 55 bags per minute. Furthermore, the textile results in a product consisting of two different materials, namely the material of the fabric and the material of the sewing thread. This complicates the recycling of used bags. Finally, it is disadvantageous that the operation of sewing requires a high material cost (sewing thread).
    The invention therefore aims to make the bag closure such that the material of the bag is weakened as little as possible by the closure, so that the closed bag even under high mechanical
    Strain especially in the area of the closure does not tear. In addition, a significantly increased throughput speed compared to the production of a conventional sewn closure seam is to be made possible. Furthermore, process reliability should be increased, machine maintenance reduced, production costs minimized, and the visual benefit of the product ensured. Finally, the recycling should be simplified and the manufacturing costs minimized.
    In order to achieve this object, the invention, in a method of the kind set forth in the opening paragraph, involves closing the bag body by folding over a tab formed from the bag back wall, after exposing the flap in the longitudinal transport section by cutting out a portion of the bag front wall. The formation of a tab allows a very simple and inexpensive connection of the folded tab with the bag body, preferably a flat connection is made to maximize the holding forces. By exposing the tab beforehand, the tab may immediately, i. be connected to the bag body without intermediate layer of the bag front wall. Releasing the tab in this case involves cutting away a tissue portion of the sacking front wall that would otherwise come to lie between the folded tab and the sack body. In this case, the method step of cutting the fabric tube and exposing the tab can be carried out in a single step, for example by offset-staggering the two superposed fabric layers of the fabric tube.
    The invention avoids the perforations otherwise caused by sewing needles, making the sack substantially denser. Furthermore, this prevents product loss as well as possible dust formation.
    Generally, it should be noted that the terms sack front wall and sack back wall do not limit the invention to the fact that the tab is formed of a particular wall. Rather, these terms merely serve to distinguish one of the two walls from the other wall.
    The procedure of the invention results in a bag closure which is extremely stable. Generally, in the manufacture of a sack closure, particularly by gluing or welding, there is a risk that a peel load acting on the bond, at which the inter-connected fabric layers are pulled apart in a direction transverse to the fabric surface, will result in disengagement of the bond. It should therefore be noted in principle that such a connection is only subject to shear, i. only subjected to a load parallel to the tissue surface. This requirement is borne out by the invention by transferring the tab, whereby the connection between the tab and the bag body is no longer exposed to any peel load, so that the connection can withstand even very high mechanical loads. This is particularly the case when, as is the case with a preferred embodiment, the folded leash is only connected to the sack front wall. In order to prevent, in particular in the case of a welded connection, that the sack rear wall is also welded together, it is advantageous to place a separating layer or a separating layer in the tubular sack body. The separating layer preferably has a higher thermal conductivity than the sack fabric. The release layer, in particular a metal-containing release layer, is preferably applied by a coating process. The release layer used here is preferably metal-containing paint. Such a separating layer leads to a heat dissipation due to the metal content, so that the sack rear wall a lower or. is substantially not subject to any heat input. Alternatively, in the area of the weld joint, a separation layer can be arranged between the bag front wall and the bag back wall. For example, the release liner may be internal, i. a stationary tool located inside the tubular body which spaces the front wall from the rear wall during transverse transport of the bag bodies.
    According to a preferred method, exposing the tab comprises performing at least three, preferably four contiguous cuts. Preferably, a rectangle is cut through the cuts, with two cuts taken along the side edges of the fabric tube. Preferably, two cuts extend across the entire width of the fabric tube.
    The cutting out of the rectangle can take place before cutting the fabric tube, for example by punching out a rectangle on the front wall of the bag or on the back of the bag.
    An alternative approach is to provide one of the cuts by cutting the fabric tube to length. In this case, it is preferred in terms of the order of the individual sections that at least two sections, preferably three sections, be made before the tissue tube is cut to length. When the fabric tube is cut to length, the last cut required to expose the tab is thus made. For the cutting of the fabric, basically any cutting method can be used which ensures the creation of a slit in the fabric. It is preferably provided that at least one cut is made by pressing a cutting tool, in particular a hot knife against the outer surface of the fabric, on the inner surface of the fabric a counter-pressure is created in the interior of the fabric tube counterpart. The hot knife in this case has a temperature which is sufficient to locally melt or weaken the material of the fabric hose to such an extent that it can be slit by applying a small amount of force.
    In order to ensure that the bag is also tight at the corners of the bag closure, in particular dustproof, after the flap has been turned over, the flap is preferably folded so that a region of the fabric tube adjacent to the flap, the bag front wall and the bag back wall is also folded over.
    As already mentioned, the closing of the bag body preferably comprises the connection of the folded flap with the bag front wall. In this case, preference is given to a cohesive connection. In particular, it is assumed that the tab and the sack front wall are joined together by bonding and / or welding.
    When joining, it is also possible to proceed in such a way that, in addition to the tab, an area of the fabric hose which adjoins the tab and encompasses the front wall of the bag and the rear wall of the bag is at least partially connected, in particular also bonded together. The bonding can be carried out, for example, as extrusion bonding.
    Extrusion bonding is particularly preferred because it does not require pretreatment such as e.g. Corona treatment of the surface requires for the glue to hold. In addition, extrusion bonding is cost effective and produces a single-grade end product that is easily recyclable. In the case of a welding operation, hot contact welding or ultrasonic welding may be used.
    Furthermore, it is advantageous if the folded tab and the bag front wall are pressed together after their connection,
    According to the invention, the bag bodies are closed in a transverse transport section, in which the bag bodies are transported in a transport direction running transversely to their longitudinal direction. In the longitudinal direction of a bag body, this is understood to mean that direction parallel to the side edge of the bag body, which connects the two open ends of the bag body. The method is carried out particularly advantageously and efficiently when the folding over and, if necessary, the connection of the flap take place during the transverse transport of the bag body, i. while the bag body in
    Moving direction moves. In particular, the end section of the bag body to be closed thereby moves past a stationary envelope, adhesive and pressing device.
    The invention is preferably applied to bags whose webs consist of monoaxially stretched polymer, in particular polyolefin or polypropylene tapes. The fabric may be basically coated or uncoated. In the case of a coating, this preferably consists of the same polymer as the polymer ribbons. The coating may consist of a thin layer of polypropylene or a mixture of polypropylene and polyethylene.
    In order to achieve the object underlying the invention, the invention further comprises a device for producing sacks from a fabric tube, in particular for carrying out the method according to the invention, comprising a first cutting device, to which a flat fabric tube can be fed in the longitudinal direction of the fabric tube and from the tubular tube obtained by cutting the fabric tube Sack body are wegführbar, and a Sackkörperverschließeinrichtung to which the tubular bag body can be fed, wherein at least one transport means is provided, which has a longitudinal transport section for transporting the tissue tube or the tubular bag body in the longitudinal direction of the fabric tube and a transverse transport section for transporting the bag body in a direction transverse to its longitudinal direction transport direction, wherein the Cutting device in the longitudinal transport section and the
    Sackkörperverschließeinrichtung are arranged in the transverse transport section. According to the invention, a second cutting device is arranged in the longitudinal transport section, which is designed to cut out a section of a bag front wall for exposing a tab formed from the bag back wall, and the bag closing device comprises a reversing device for folding over the flap.
    A preferred embodiment provides that the bag closing device comprises means for connecting the folded flap to the bag front wall. The connecting means may preferably comprise a welding or gluing device.
    A preferred development provides that the second cutting device is assigned an internal tool against which a knife of the cutting device can be pressed. The internal tool is in this case arranged so that it comes to rest in operation inside the tubular bag body. The inner tool may be preceded by means for spacing the superimposed layers of fabric of the flat tube of the bag body, so that it does not come to collisions with the internal tool when transporting the tubular bag body.
    A preferred embodiment provides that a heating device is provided for heating the knife of the cutting device.
    To the internal tool to any
    To be able to adapt to fluctuations in the width of the tubular fabric, a preferred development provides that the internal tool has adaptation means for adapting its overall width. In particular, the internal tool has at least two plate-like tool elements which have mutually sliding inclined surfaces to vary the total width of the tool.
    In order to ensure that the internal tool always fills the entire available width, it is preferably provided that the adjustment means comprise at least one spring element, which acts on the plate-like tool elements in the direction of the maximum overall tool width.
    A further preferred embodiment provides that the second cutting device is arranged in front of the first cutting device in the transport direction of the tubular fabric, whereby when cutting the fabric tube by means of the first cutting device at the same time the section of the front wall of the bag previously prepared by the second cutting device by slitting the fabric is cut away.
    The invention will be explained in more detail below with reference to an embodiment shown in the drawing. 1 shows a schematic plan view of the device according to the invention, FIG. 2 shows a sectional view along the line II-II, FIG. 3 shows a detail view of the internal tool, FIG. 4 shows a modified embodiment of the device, FIG. 5 shows two through the device according to FIG Figs. 6 and 7 show a side-sack formation, and Fig. 8 shows a gusset sack modification.
    In Fig. 1 it can be seen that a fabric tube 1 is fed to the device in the direction of the arrow 2 and transported within a longitudinal transporting section 3 of the device in the direction of the arrow 2. First, the fabric tube 1 is cut along the cutting lines 4, 5 and 6. The course of the cutting lines 4, 5 and 6 is shown in dashed lines on the left in FIG. 1, wherein the line 4 extends over the entire width of the tubular fabric 1 and the lines 5 and 6 each extend along the edges 7 of the tubular fabric. The cuts made along the cutting lines 4, 5 and 6 are made by means of the cutting device 8. The cutting device 8 comprises an internal tool, i.e. a tool arranged between the fabric layers of the fabric hose 1, which comprises rollers 9 for spacing the fabric layers and a plate-shaped tool 10 arranged downstream of the rollers 9 in the transport direction 2. The plate-shaped tool 10 serves as a counterpart to the outside of the fabric acting on the cutting blade. The cutting blades acting along the cutting lines 5 and 6 are designated by 11. The cutting blade acting along the cutting line 4 is designated 12 (Fig. 2). The cutters 11 are heatable and movably supported according to the double arrow 13 to be pressed onto the plate-shaped tool 10 with the interposition of the tissue. Thereby, cuts are made in the fabric along the cutting lines 4, 5 and 6. The cut produced along the cutting line 4 is designated 14 in a further forward transported portion of the tubular fabric. The cut 14 is hereby produced only in the upper fabric layer or the bag forward 18 (FIG. 2), while the lower woven layer or the sack rear wall 19 remains unaffected by this. The lateral incisions made along the cutting lines 5 and 6 are designated 15 and 16 in a further forwardly conveyed portion of the tubular fabric.
    At the position indicated schematically at 17, the tubular fabric 1 is cut to length by means of a further cutting device, not shown, in order to obtain individual tubular bag bodies 20. The section runs along the 21 marked cutting line. When sliced along line 21, the hatched portion 22 of tissue falls away. This fabric section can be recycled in the sequence in which it is fed to an extruder for the production of webbing tapes.
    By cutting away the fabric section 22, a tab 23 is now formed, which is formed from the sack rear wall 19.
    At the end of the longitudinal transport section 3, the tubular bag bodies 20 enter a transverse transport section 24, in which they are transported further in the direction of the arrow 25. The bag body 20 in this case have open ends 26 and 27. In the transverse transport section, the tab 23 of the bag body 20 is moved forward along the folding line indicated by 2.8, that is to say, in FIG. on the visible in the drawing surface of the upper fabric layer or the bag front wall 18, turned over and with this surface, for. connected by gluing. Then, the state of the bag body 20 indicated at 29 is given.
    In the sectional view of Fig. 2, the cutting device 8 can be seen more clearly. The cutting device 8 comprises two rollers 9, by which the two fabric layers 13 and 14 of the fabric tube 1 are spaced from each other. The cutting device 8 further comprises a plate 10 which adjoins the rollers 9 in the direction of transport 2 and which is formed as a counterpart to the welding knife 12. In Fig. 3, the plate-shaped tool 10 is shown in detail. The tool is formed as an internal tool and includes two plate-like tool members 30 and 31. The plate-like tool member 31 is stationary, whereas the plate-like tool member 30 is slidably guided in the direction of the double arrow 33. In the process, the two plate-like tool elements slide on an inclined surface 34, so that the total width of the tool changes depending on the relative position. A spring element 32 ensures that the two plate-like tool elements 30 and 31 always interact with each other on the inclined surface 34. When the width of the tubular fabric 1 decreases, the friction of the fabric on the movable tool member 30 increases, so that it is taken along in the transporting direction 2, even though the width of the tool has adapted to the tube width. Conversely, as the tubing width increases, the movable tool member 30 is retracted by the spring member 32.
    In the modified embodiment according to FIG. 4, the cutting device comprises a first cutting blade 12 and a second arranged offset in the longitudinal direction
    Cutting knife 35. The first cutting knife 12 cuts the bag front wall 18 along the cutting line 4 and the second cutter 35 snows the bag back wall 19 along the cutting line 21. Also, the cutting blades 11 analogous to the embodiment of FIG. 1 produce the lateral cuts 15 and 16.
    As a result, as shown in FIG. 5, two-tube-shaped bag bodies 20 are produced, and a tab 23 is produced at the mutually facing open ends, wherein one tab 23 is formed on the bag front wall 18 and the other tab 23 on the bag rear wall 19.
    In this way, in contrast to the embodiment according to FIG. 1, no tissue section 22 is cut away and a corresponding loss of material is avoided. Either two separate closing devices can be used to close the two open sack ends, or every other tubular sack body 20 is turned so that a single occlusive device can be found.
    Fig. 6 shows a modified embodiment for the processing of gusseted sacks. The side pleats are indicated at 36 and are connected to each other in the area designated 38 and to the bag front wall 18 and the bag rear wall 19, in particular welded, in order to achieve a seal of the bag closure in the area of the side pleats. After welding, the tab 23 together with the welded portions 38 are folded over and connected to the bag body.
    In the cross-sectional view of Fig. 7 there are shown punches 37 of a welding device which serve to press and weld together the fabric layers to be joined.
    Alternatively, the procedure may be as shown in FIG. 8. Here, when the tab 23 is exposed, it is assumed that the side folds 36 are not cut during the production of the cut 14. Rather, the gussets 36 are trimmed in a separate section along the line 39 which is closer to the sack end than the cut 14. In this manner, the portion of the side pleats 36 protruding into the region of the flap 23 can be folded along the line 28 as the flap 23 is folded over to achieve a complete sealing of the bag closure. r
    权利要求:
    Claims (20)
    [1]
    Claims 1. A method of making sacks from a fabric wherein a flat fabric tube is provided comprising a sack front wall and a sack rear wall which lie flat on top of each other and the flat fabric tube is fed to a cutter in which the suture tube is cut to provide individual tubular sack bodies whereupon the tubular bag bodies are closed at at least one open end by hitting an end portion of the fabric, wherein the cutting of the fabric tube is carried out in a longitudinal transporting step in which the fabric tube is closed. the tubular bag bodies are transported in the longitudinal direction of the fabric tube, and the closing of the bag body preferably takes place in a transverse transport section in which the bag bodies are transported in a transport direction transverse to their longitudinal direction, characterized in that the bag body is closed by folding over a flap formed from the bag back wall after the flap in the longitudinal transport section by cutting out a portion of the sack front wall.
    [2]
    The method of claim 1, characterized in that exposing the tab comprises performing at least three contiguous sections.
    [3]
    A method according to claim 2, characterized in that one of the cuts is produced by cutting the fabric tube to length.
    [4]
    A method according to claim 2 or 3, characterized in that at least two cuts are made before the banding of the fabric tube.
    [5]
    A method according to claim 2, 3 or 4, characterized in that at least one cut is made by pressing a cutting tool, in particular a hot knife against the outer surface of the fabric, creating a counter-pressure on the inner surface of the fabric by means of a counterpart located inside the fabric tube.
    [6]
    6. The method according to any one of claims 1 to 5, characterized in that the folding over of the flap takes place in such a way that a region of the fabric tube which borders on the flap and covers the front wall of the bag and the sack rear wall is also folded over.
    [7]
    A method according to any one of claims 1 to 6, characterized in that the closing of the bag body comprises the connection of the folded flap with the bag front wall.
    [8]
    8. The method according to claim 7, characterized in that the tab and the bag front wall are joined together by gluing and / or welding.
    [9]
    A method according to claim 7 or 8, characterized in that the folded flap and the bag front wall are pressed together after being joined.
    [10]
    10. The method according to any one of claims 1 to 9, characterized in that the folding and possibly connecting the flap during the transverse transport of the bag body is carried out.
    [11]
    A method according to any one of claims 1 to 10, characterized in that the fabric consists of monoaxially stretched polymer, in particular polyolefin or polypropylene tapes.
    [12]
    A device for producing bags from a fabric tube, in particular for carrying out the method according to one of claims 1 to 11, comprising a first cutting device to which a flat fabric tube can be fed in the longitudinal direction of the fabric tube and from the tubular bag body obtained by cutting the tissue tube wegwegbar, and a Sackkörperverschließeinrichtung, the the tubular bag bodies can be fed, further comprising at least one transport device having a longitudinal transport section for transporting the tubular bag body in the longitudinal direction of the fabric tube and a transverse transport section for transporting the bag body in a transport direction transverse to its longitudinal direction, the cutter being disposed in the longitudinal transport section and the bag closing device being disposed in the transverse transport section , characterized in that ss in the longitudinal transport section a second cutting device is arranged, which is designed to cut out a portion of a bag front wall for exposing a flap formed from the sack rear wall, and in that the sack closing device comprises a transfer device for folding over the flap.
    [13]
    A device according to claim 12, characterized in that the bag body closing means comprises means for connecting the folded flap to the bag front wall.
    [14]
    Device according to claim 13, characterized in that the connection means comprise a welding or gluing device.
    [15]
    Device according to claim 12, 13 or 14, characterized in that the second cutting device is associated with an internal tool against which a knife of the cutting device can be pressed.
    [16]
    Device according to claim 15, characterized in that a heating device is provided for heating the blade of the cutting device.
    [17]
    A device according to claim 15 or 16, characterized in that the internal tool has adjustment means for adjusting its total width.
    [18]
    18. The device according to claim 17, characterized in that the internal tool has at least two-plate-like tool elements, which have to change the total width of the tool sliding sliding surfaces.
    [19]
    A device according to claim 17 or 18, characterized in that the adjustment means comprise at least one spring element which urges the plate-like tool elements towards the maximum overall tool width.
    [20]
    20. Device according to one of claims 12 to 19, characterized in that the first cutting device is arranged in the transport direction of the tubular fabric in front of the second cutting device.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP2464510B1|2017-10-25|Method for producing a sack or a bag having plastic non-woven material
    EP2739455B1|2018-07-04|Method and device for producing, filling, and closing bags, and a bag
    EP2049327A1|2009-04-22|Method for the production of packaging bags having a reinforced base region and device for carrying out the method
    EP2504150B1|2017-12-13|Method for closing a bag body
    EP3037254B1|2020-04-15|Method for producing a plastic tissue bag and plastic tissue bag
    EP3024625B1|2018-04-11|Method and device for the production of bags from a fabric
    EP2209613B1|2015-10-21|Apparatus for, and method of, producing a bag from paper
    EP2998236A1|2016-03-23|Side folding bag and method for producing the same
    EP3129217B1|2018-06-06|Apparatus for closing bags made of woven fabric
    AT508982B1|2013-03-15|METHOD FOR CLOSING A BAG
    EP3126120B1|2019-05-15|Method and apparatus for producing bags from a woven-fabric tube
    EP2673207A1|2013-12-18|Method for closing a tubular sack body
    EP3663080A1|2020-06-10|Device and method for manufacturing film bags
    DE212009000003U1|2009-11-26|Easy-to-open packaging
    DE102019215785A1|2021-04-15|Pouch, method and apparatus for making a pouch
    EP3023242B1|2017-06-14|Packaging film and device and method for manufacturing same
    WO2021110216A1|2021-06-10|Method for producing a multi-layer seam, and packaging comprising a multi-layer seam, and device
    WO2012103560A1|2012-08-09|Bag
    DE2308588C3|1978-02-09|Pack with a tear strip
    AT509422A1|2011-08-15|BAG
    DE7309475U|1974-08-29|Packaging container
    同族专利:
    公开号 | 公开日
    CN105555493A|2016-05-04|
    WO2015010145A1|2015-01-29|
    BR112016001731B1|2021-02-02|
    EP3024625A1|2016-06-01|
    BR112016001731A2|2017-08-01|
    EP3024625B1|2018-04-11|
    AT514545B1|2015-02-15|
    CN105555493B|2019-04-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4151699A|1975-07-11|1979-05-01|Focke & Pfuhl|Production of discrete blanks for packets|
    DE3716010A1|1986-05-22|1987-11-26|Chemiefaser Lenzing Ag|Method for producing a valve bag|
    WO2009121838A1|2008-04-03|2009-10-08|Windmöller & Hölscher Kg|Apparatus and method for producing sacks from tubular parts|
    US3390617A|1962-02-28|1968-07-02|Cloud Machine Corp|Packaging method and apparatus|
    DE3408722C2|1983-12-08|1990-02-01|Karl Heinz Dr. 4802 Halle De Sengewald|
    JP3408203B2|1999-07-08|2003-05-19|日興商事株式会社|Automatic opening bag making method and apparatus|
    DE10106289A1|2001-02-06|2002-08-29|Windmoeller & Hoelscher|Process for making gusseted bags from plastic film|
    DE102008017442B4|2008-04-03|2013-01-17|Windmöller & Hölscher Kg|Apparatus and method for making sacks comprising stretched plastic tape fabrics|
    DE102009000454B4|2009-01-28|2018-10-31|Windmöller & Hölscher Kg|Apparatus and method for making sacks of tubular material|
    US9073281B2|2010-04-22|2015-07-07|Coating Excellence International Llc|Method and system for making a stepped end|AT515542B1|2014-04-03|2015-10-15|Worff Herwig Dipl Ing|Method for producing sacks from a fabric tube|
    CN108374281B|2018-02-27|2019-08-30|青岛平成集装袋有限公司|A kind of jumbo bag cuts cloth machine and its cuts technique|
    法律状态:
    2017-05-15| PC| Change of the owner|Owner name: LOHIA CORP LIMITED, IN Effective date: 20170323 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA604/2013A|AT514545B1|2013-07-26|2013-07-26|Method of making sacks from a fabric|ATA604/2013A| AT514545B1|2013-07-26|2013-07-26|Method of making sacks from a fabric|
    PCT/AT2014/000149| WO2015010145A1|2013-07-26|2014-07-25|Method and device for producing sacks from a fabric|
    CN201480052689.0A| CN105555493B|2013-07-26|2014-07-25|Method and apparatus for generating bag by fabric|
    BR112016001731-5A| BR112016001731B1|2013-07-26|2014-07-25|method and device for producing bags from a fabric|
    EP14757826.4A| EP3024625B1|2013-07-26|2014-07-25|Method and device for the production of bags from a fabric|
    [返回顶部]