EP2288492A1 - Apparatus and method for producing sacks which comprise woven fabrics made from stretched small plastic tapes - Google Patents

Apparatus and method for producing sacks which comprise woven fabrics made from stretched small plastic tapes

Info

Publication number
EP2288492A1
EP2288492A1 EP09727833A EP09727833A EP2288492A1 EP 2288492 A1 EP2288492 A1 EP 2288492A1 EP 09727833 A EP09727833 A EP 09727833A EP 09727833 A EP09727833 A EP 09727833A EP 2288492 A1 EP2288492 A1 EP 2288492A1
Authority
EP
European Patent Office
Prior art keywords
hose
piece
pieces
opening
tubing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09727833A
Other languages
German (de)
French (fr)
Other versions
EP2288492B1 (en
Inventor
Carsten Tausch
Christian HÄGER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP2288492A1 publication Critical patent/EP2288492A1/en
Application granted granted Critical
Publication of EP2288492B1 publication Critical patent/EP2288492B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/001—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom
    • B31B2150/0014—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom having their openings facing transversally to the direction of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/003—Flexible containers made from webs starting from tubular webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/20—Shape of flexible containers with structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/003—Opening or distending bags

Definitions

  • the invention relates to an apparatus and a method for the production of sacks comprising woven fabrics of stretched plastic tape, according to the preamble of claims 1 and 13.
  • Such devices are known and have been available on the market for a long time. As a rule, they initially comprise a separating device in order to separate a supplied fabric hose, which may also be coated, into hose pieces. These consist of two superposed material webs, each web of material can be constructed of several layers of different material. The pieces of hose are then taken over by at least one transport device in order to spend them in the individual processing stations. One of these processing stations is the so-called bottom opening station. Here, at least one end of a piece of tubing is pulled open, so that a bottom can be molded onto this wound-up end. In general, both ends of a piece of hose are processed in this way.
  • the lower material layer of the hose section is held in place by negative pressure on the table on which the hose section rests during transport.
  • the upper material layer is thereby folded back on the outside of the upper material layer, so that a Boden rectangle arises.
  • corner impacts also occur, which form on both sides of the floor rectangle and have a triangular shape.
  • the sheet is pulled back and transported the bag on.
  • the hose pieces are successively taken over by a further transport device, which feeds them in a uniform speed, ie continuously, a bottom closure device.
  • the bottom rectangle and the corner impacts are thus in the plane of the hose piece, preferably in the horizontal direction.
  • the soil remains in the horizontal plane as the method of bottom closure has advantages.
  • both press rollers can act on the floor over the entire width. This can not be done, for example, if the floors are orthogonal to the actual bag body. In this case, no continuous nip can compress the entire floor. In the area of the ground center line where the bag body is located, the one must Press roll inevitably be interrupted. So there can be no compression, which could cause leaks in the finished bag.
  • Another aspect of tillage in the plane of the bag body is that, when the bottom is welded by means of hot air and a ground cover sheet is welded, the hot air is uniformly applied to the parts to be welded. So there is a uniform joining instead.
  • the object of the present invention is therefore to propose a device for producing sacks, which allows a simpler procedure in the opening of the ends of the hose pieces, wherein these ends are opened so that the open bottom is in the plane of the bag body.
  • the device contained in the device for opening the ends of the hose pieces includes means for folding over the ends of the hose pieces from the horizontal position to a vertical position.
  • the two material layers continue to lie together.
  • one end of the tube piece is folded upwards by about 90 degrees, so that approximately between the tube piece and the folded-up end a right angle is created.
  • a folding down by 90 degrees is conceivable in principle. In this way it is possible to separate by relatively simple opening means, the two layers of the up or folded down the end and fold into the horizontal. This process can then take place simultaneously for both layers and especially during continuous operation.
  • a piece of tubing having an open bottom is obtained, which does not differ from a piece of tubing provided with an open bottomed cycle, so that the known bottom closure station can be used. Due to the uniform working method for both material layers, the mounting of the floor can be done faster, so that the performance can be significantly increased.
  • the means for opening at least one end of a piece of tubing for this end comprises at least two detection devices, with each detection means a material layer of the respective piece of tubing can be detected and wherein the material layers are separable from each other with the at least two detection means.
  • These detection devices are adapted to apply forces to the two outer layers of material, wherein the forces are directed opposite. The forces must be large enough to overcome any attractive forces that may be caused by an electrostatic charge, for example.
  • the detection devices need, if the ends of the tube piece are folded over 90 degrees from the horizontal, are moved only in a horizontal plane. This saves compared to other devices for the production of bags comprising woven fabric of stretched plastic, height.
  • the detection devices are arranged on rotating elements, such as discs, on which detection devices are mounted eccentrically, they can be operated at least temporarily with the same speed vector, which indicates the speed direction and the amount of speed, as the hose section.
  • the layers of the end of a piece of tubing can be separated even if the piece of tubing is transported in continuous operation.
  • suckers that can be arranged on a beam. These can be brought to both sides of the folded-up end. After being subjected to negative pressure, the suction cups can be removed from each other again so that the layers of material are likewise removed from one another. Now the inside of the hose piece is accessible.
  • the device for opening at least one end of each of a piece of hose comprises supports to which the detection devices can be fastened.
  • the detection devices can be mounted in different positions, so that the material layers can be detected independently of the height of the folded-up end of the hose piece.
  • the carriers are designed as guides which extend parallel to the folded ends of the hose piece, ie perpendicular to the plane of the hose piece. By moving the detection devices along the guides so they are adjustable in height.
  • the distance of the detection devices to the transport plane of the hose pieces is changeable.
  • the region of the hose piece end folded over by 90 degrees is already small, so that the Detecting devices along the guides are brought close to said transport plane.
  • the detection elements are further removed from the transport plane.
  • the guides may be configured as simple rods to which the detection means by means of suitable fastening means, such as knurled nuts, can be locked. If at least two parallel guides are provided for each detection device, tilting of the detection devices can be prevented. Overall, such a detection device can be easily and quickly arranged in their vertical distance to the hose piece.
  • the height of the up or down folded end ultimately defines the width of the finished floor.
  • a particularly preferred embodiment of the invention includes spreading elements, which can be introduced between the two layers of material of the end of the hose piece to be opened. Furthermore, it is advantageous if these spreading elements move the material layers so far away from each other that they are then completely horizontal. Such expansion elements have a good effect especially when operated in combination with the detection devices described above. In this case, the spreading elements can dive without problems in the space between the already separated by the detection elements material layers.
  • the means for opening one end of a piece of tubing comprises at least one pressure roller, which forms a gap together with an abutment, through which at least parts of an open end of a piece of tubing feasible and these parts can be acted upon by a pressing force.
  • This pressure roller thus has the task to flatten the reared soil and thus to fix in the open mold.
  • the counter-layer can also consist of another roller. It is particularly advantageous if each side of the device a individual pressure roller is assigned, so that the open ends of a piece of hose can be pressed separately.
  • offset in the transport direction means that a processing step takes place first at one end of the hose piece and the same processing step takes place at the other end of the hose piece after the hose piece has been transported further
  • the pitch center distance is the distance from fold line to fold line, the fold lines being the ones around which the end areas are folded upwards.
  • the step of setting up the tube piece ends preferably takes place in the sequence described, but this method step can also be used for both ends occur simultaneously, since the corresponding device components do not need much space.
  • a great advantage of a staggered arrangement is the fact that, above all, the individual elements of the bottom opening station with the
  • FIG. 1 is a schematic diagram of an apparatus for producing tissue sacks.
  • FIG. 2 is a perspective view of a bottom opening station in a device according to the invention. 3 View III - III from FIG. 2
  • FIG. 4 View IV - IV from FIG. 3
  • FIG. 5 View V - V from FIG. 2
  • FIG. 1 schematically shows individual steps for processing a fabric tube into sacks, as they take place in sack making device 1.
  • the fabric tube 2 is fed to the sack manufacturing device 1. This is advantageously done by unwinding the fabric 3 forming a fabric tube in a processing device 4. Subsequently, the tube 2 experiences the so-called opening in the layer separation station 5.
  • the fabric tube is guided around an inner tool around which separates the two layers, so that the layers, if they were glued together in one of the manufacturing steps of the tube, separate. Only with separate layers can it be ensured that the following production steps can be carried out properly. Afterwards, the separate material layers of the hose are put back on top of each other.
  • the fabric tube is now fed to the cross-cutting device 6, which separates the fabric tube into individual pieces of hose.
  • the conclusion of the actual Sackherstellreaes forms the application of a ground cover sheet on the floors in the cover sheet station 11.
  • the cover sheets can also be welded.
  • the finished bags are then placed on the bag stack 12 and transported away from there on unspecified manner.
  • FIG. 2 shows details of an opening station 5 in a device according to the invention.
  • the tube pieces 13 are transported by means of a transport device not shown in the direction x on the surface of a support 14, for example, on the surface of a table, lying flat, so horizontal.
  • a transport device not shown in the direction x on the surface of a support 14, for example, on the surface of a table, lying flat, so horizontal.
  • this end is first brought from the horizontal position to a vertical position.
  • the hose piece must be counteracted.
  • the hose piece 13 is threaded under a folding belt 16.
  • This folding tape can be relative to the hose pieces in peace and thus relative to the support in motion.
  • the hose pieces can also move relative to the folding belt 16. This is the case, for example, when the seam is at rest.
  • the rebate belt may consist of a flexible, but highly prestressed material. Preferably, however, these consist of steel sheets, which are connected in a manner not shown with the support 14 or with the machine frame. Steel sheets have the advantage over other components of a smaller thickness with the same load capacity. If the hose piece 13 is threaded, it is then guided past a guide element 17, for example a baffle. After the end 15 of the tube piece 13 has been brought into the vertical position, this comes to the actual bottom opening device 18, which is shown schematically in this figure. In this bottom opening device 18, two suction bars are provided, which engage on both sides of the folded-up end and are guided in or against the direction z, so that the material layers are separated from each other.
  • suction bars are also moved in the direction X in order to be able to attack the further transported bag.
  • the interior of the end 15 of the tube piece 13 is now accessible.
  • Spreading elements now engage in this interior, which push the material layers further apart until they are horizontal again. This situation is illustrated by the open bottom 19.
  • the opening of the second end 15 'of the tube piece 13 takes place in the same way, but offset from the opening of the first end 15.
  • the first end is already opened in the bottom opening device 18, while the second end 15' is guided under the folding band 16 '.
  • the open bottom 19 ' is generated in the manner described above.
  • a staggered arrangement of the components is advantageous when bags are to be produced with very small bottom center distances A.
  • the piece of tubing with open bottoms 19, 19 ' is present, wherein all components of the opened bottoms are located substantially in the plane of the support 14.
  • each bottom opening device 18, 18 ' is supplied with torque by its own drive. This is illustrated by the motor 22 on the bottom opening device 18.
  • the corresponding motor on the bottom opening device 18 ' is not visible in the illustrated view.
  • the motor of a bottom opening device 18, 18 ' primarily supplies the suction bars with a drive torque, so that they can move the material layers away from one another.
  • the spreading elements are powered by this engine with torque.
  • the conclusion of the bottom opening devices 18, 18 ' form the pressure rollers 23, 23', which serve the purpose of compressing the freshly opened soils and thus to fix in their position.
  • the resulting in the context of the bottom opening creases are struck out and then form correct folding edges, so that the tendency of the soil decreases, straighten up again.
  • the pressure rollers 23, 23 ' As a counter-pressure element to the pressure rollers 23, 23 'is either the support 14 or the counter-pressure rollers 24, 24'.
  • the pressure rollers 23, 23 ' are arranged in the transport direction x seen in Figure 2 at the same height. These rollers 23, 23 'can also be arranged offset from one another, so that the open floors can be pressed immediately after the opening process in the manner described.
  • FIG. 3 shows the view III-III in FIG. 2. In this FIG. 3, details of the bottom opening station 8 can be seen.
  • End 15 of the tube piece 13 are provided with suction bars, of which the viewer facing suction bar 20 can be seen.
  • the folded ends 15 of the hose pieces 13 have different heights H.
  • the suction pads 20, 20 'on vertical guides 21, 21' releasably secured, so that the suction pads in the direction of the double arrow y along the folded ends 15 can be moved and adjusted according to their heights H.
  • the guides can be made in various ways. These can be round or rectangular profiles that are solid or hollow. 4 shows the view IV - IV of Figure 3. In addition to the front suction bar 20 and the front guide 21 are now also the suction bar 20 'and the guide 21' can be seen.
  • FIG. 5 shows the view V - V of FIG. 2.
  • the pressure roller 23 is mounted in a lever arm 25 or in a lever arm pair.
  • the lever arm 25 itself is pivotally mounted in the machine frame or in attachments 26 of the machine frame.
  • the lever arm 25 about an axis 27 which is fixedly connected to attachments, pivotable and fixable on this axis.
  • a suitable, but not shown clamping device may be provided.
  • the lever arm is freely rotatably mounted on the axle 27.
  • the lever arm 25 is fixedly connected to a shaft which is rotatably mounted in the attachments.
  • the pressure roller 23 can now act on the opened trays with a predetermined force, for example its own weight.
  • the support 14 which is shown in the figure 2 serve.
  • a counter-pressure roller 24 with which the pressure roller 23 forms a nip in which the open trays 19 are compressible.
  • the counter-pressure roller can be rotatable, but arranged fixed to the frame.

Landscapes

  • Making Paper Articles (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

The invention describes an apparatus for producing sacks from tubular parts which comprise woven fabrics made from stretched small plastic tapes and are composed of two material layers which lie above one another. The following are contained in said apparatus: - at least one transport device for transporting the tubular parts in a transport direction (x) which extends transversely with respect to their direction (z) of extent, wherein the tubular parts can be conveyed in a horizontal position, and - at least one device for opening at least one end of a tubular part, in order to form bases later. The device for opening at least one end of a tubular part comprises the means for folding over the ends of the tubular parts, by way of which means the two ends of the tubular parts can be moved out of the horizontal position into a vertical position (y), wherein, furthermore, the material layers lie on one another.

Description

Vorrichtung und Verfahren zur Herstellung von Säcken, welche Gewebe aus gereckten Kunststoffbändchen umfassen Apparatus and method for making sacks comprising stretched plastic tape fabrics
Die Erfindung betrifft eine Vorrichtung und ein Verfahren zur Herstellung von Säcken, welche Gewebe aus gereckten Kunststoffbändchen umfassen, nach dem Oberbegriff der Ansprüche 1 und 13.The invention relates to an apparatus and a method for the production of sacks comprising woven fabrics of stretched plastic tape, according to the preamble of claims 1 and 13.
Solche Vorrichtungen sind bekannt und schon längere Zeit am Markt erhältlich. Sie umfassen in der Regel zunächst eine Vereinzelungsvorrichtung, um einen zugeführten Gewebeschlauch, der zudem beschichtet sein kann, zu Schlauchstücken zu vereinzeln. Diese bestehen aus zwei übereinander liegenden Materialbahnen, wobei jede Materialbahn aus mehreren Schichten unterschiedlichen Materials aufgebaut sein kann. Die Schlauchstücke werden dann von zumindest einer Transportvorrichtung übernommen, um sie in die einzelnen Bearbeitungsstationen zu verbringen. Eine dieser Bearbeitungsstationen ist die so genannte Bodenöffnungsstation. Hier wird zumindest ein Ende eines Schlauchstücks aufgezogen, so dass an diesen aufgezogenen Ende ein Boden angeformt werden kann. In der Regel werden beide Enden eines Schlauchstücks auf diese Weise bearbeitet.Such devices are known and have been available on the market for a long time. As a rule, they initially comprise a separating device in order to separate a supplied fabric hose, which may also be coated, into hose pieces. These consist of two superposed material webs, each web of material can be constructed of several layers of different material. The pieces of hose are then taken over by at least one transport device in order to spend them in the individual processing stations. One of these processing stations is the so-called bottom opening station. Here, at least one end of a piece of tubing is pulled open, so that a bottom can be molded onto this wound-up end. In general, both ends of a piece of hose are processed in this way.
Eine Vorrichtung, mit welcher derartige Säcke herstellbar sind, ist in der DE 195 02 251 A1 offenbart. In dieser Offenlegungsschrift wird eine solche Vorrichtung vorgeschlagen, die kostengünstig herzustellen ist, um den Investitionsaufwand für die Beschaffung in Grenzen zu halten. In dieser Vorrichtung werden die Schlauchstücke im Taktbetrieb vorwärts bewegt. Dabei werden die Schlauchstücke flach liegend quer zu ihrer Hauptachse transportiert, so dass seitlich angeordnete Bearbeitungsmittel gleichzeitig beide Enden des Schlauchstücks bearbeiten können. In der Öffnungsstation werden die Schlauchstücke angehalten. Sodann wird mittels eines Saugers die obere Lage an den Enden des Schlauchstücks angehoben, so dass ein horizontal in Richtung der Hauptachse verschiebliches Blech zwischen die beiden Materiallagen des Schlauchabschnitts einfahren kann. Die untere Materiallage des Schlauchabschnitts wird durch Unterdruck auf dem Tisch, auf welchem der Schlauchabschnitt während des Transports aufliegt, festgehalten. Die obere Materiallage wird dadurch auf die Außenseite der oberen Materiallage zurückgeklappt, so dass ein Bodenrechteck entsteht. Beim Umklappen entstehen zudem so genannte Eckeinschläge, welche sich beidseits des Bodenrechtecks ausbilden und eine dreieckige Form aufweisen. Nach dem Umklappen wird das Blech wieder zurückgezogen und der Sack weiter transportiert. In der Folge werden die Schlauchstücke nacheinander von einer weiteren Transporteinrichtung übernommen, die sie in einer gleichförmigen Geschwindigkeit, also kontinuierlich, einer Bodenschließvorrichtung zuführt.A device with which such bags can be produced, is disclosed in DE 195 02 251 A1. In this publication, such a device is proposed, which is inexpensive to manufacture, in order to keep the investment costs for the procurement within limits. In this device, the pieces of tubing are moved forward in the clock mode. The hose pieces are transported lying flat transversely to its main axis, so that laterally arranged processing means simultaneously both ends of the Can edit hose piece. In the opening station the hose pieces are stopped. Then, the upper layer is raised at the ends of the hose piece by means of a sucker, so that a horizontally displaceable in the direction of the main axis plate can move in between the two layers of material of the hose section. The lower material layer of the hose section is held in place by negative pressure on the table on which the hose section rests during transport. The upper material layer is thereby folded back on the outside of the upper material layer, so that a Boden rectangle arises. When folding over, so-called corner impacts also occur, which form on both sides of the floor rectangle and have a triangular shape. After folding, the sheet is pulled back and transported the bag on. As a result, the hose pieces are successively taken over by a further transport device, which feeds them in a uniform speed, ie continuously, a bottom closure device.
Nach dem Öffnen des Schlauchendes liegen das Bodenrechteck und die Eckeinschläge also in der Ebene des Schlauchstückes, vorzugsweise in horizontaler Richtung. Auch bei der Bodenschließung verbleibt der Boden in der horizontalen Ebene, da das Verfahren zur Bodenschließung Vorteile aufweist. Gerade bei der Herstellung von Säcken, welche Gewebe aus gereckten Kunststoffbändchen umfassen, ist es notwendig, die Böden mittels Heißluft oder zumindest erhitzter Klebstoffe, wie ein Extrudat, zu fügen. Es ist bekannt, dass nur auf diese Weise sehr halt- und belastbare Böden herstellbar sind. Im Gegensatz zu Kaltklebeverfahren ist es allerdings notwendig, die Böden unmittelbar nach dem Fügen zu verpressen, wofür der Boden über seine gesamte Breite durch einen Presswalzenspalt zu führen ist. Daher ist es besonders vorteilhaft, wenn nicht sogar notwendig, die Böden in einer Ebene zu bearbeiten, die parallel zu der Ebene der Schlauchstücke liegt. In diesem Fall können beide Presswalzen über die gesamte Breite auf den Boden einwirken. Dies kann beispielsweise nicht erfolgen, wenn die Böden orthogonal zum eigentlichen Sackkörper stehen. In diesem Fall kann kein durchgängiger Walzenspalt den kompletten Boden verpressen. Im Bereich der Bodenmittellinie, an der sich der Sackkörper befindet, muss die eine Presswalze zwangsläufig unterbrochen sein. Es kann dort also keine Verpressung erfolgen, was Undichtigkeiten des fertigen Sacks zur Folge haben könnte.After opening the hose end, the bottom rectangle and the corner impacts are thus in the plane of the hose piece, preferably in the horizontal direction. Also in the bottom closure the soil remains in the horizontal plane as the method of bottom closure has advantages. Especially in the production of sacks comprising stretched plastic tape fabrics, it is necessary to add the floors by means of hot air or at least heated adhesives such as an extrudate. It is known that only in this way very durable and resilient soils can be produced. In contrast to cold gluing processes, however, it is necessary to press the soils immediately after joining, for which the floor is to be guided over its entire width through a press nip. Therefore, it is particularly advantageous, if not necessary, to machine the floors in a plane that is parallel to the plane of the pieces of tubing. In this case, both press rollers can act on the floor over the entire width. This can not be done, for example, if the floors are orthogonal to the actual bag body. In this case, no continuous nip can compress the entire floor. In the area of the ground center line where the bag body is located, the one must Press roll inevitably be interrupted. So there can be no compression, which could cause leaks in the finished bag.
Ein weiterer Aspekt bei der Bodenbearbeitung in der Ebene des Sackkörpers ist, dass, wenn mittels Heißluft der Boden verschweißt und ein Bodendeckblatt aufgeschweißt wird, die Heißluft gleichmäßig auf die zu verschweißenden Teile aufgebracht wird. Es findet also ein gleichmäßiges Fügen statt.Another aspect of tillage in the plane of the bag body is that, when the bottom is welded by means of hot air and a ground cover sheet is welded, the hot air is uniformly applied to the parts to be welded. So there is a uniform joining instead.
In der Vergangenheit sind bei der beschriebenen Art von Sackherstellmaschinen, bei denen die Böden während der Sackherstellung in der Ebene der Schlauchkörper bleiben, Tendenzen zu höheren Leistungen zu verzeichnen, die das Kosten-Nutzen-Verhältnis solcher Maschinen deutlich erhöhen würden. Allerdings ist die Bearbeitungsgeschwindigkeit der Schlauchstücke in bekannten Vorrichtungen vor allem durch die Bodenöffnungsstation, in der zur Öffnung der Enden der Schlauchstücke in horizontaler Richtung die obere Lage des Endes des Schlauchstücks zurückgefaltet wird, stark begrenzt. Dies ist insbesondere der Tatsache geschuldet, dass ein Schieber in der Stillstandsphase des Sackes eine Lage des Endes des Schlauchstücks nahezu vollständig überstreichen muss. Diese Vorgehensweise ist vergleichsweise umständlich.In the past, in the described type of sack making machines, where the trays remain in the level of the hulls during bag making, there are tendencies towards higher outputs which would significantly increase the cost-benefit ratio of such machines. However, the processing speed of the hose pieces in known devices, especially by the bottom opening station, in which the opening of the ends of the hose pieces in the horizontal direction, the upper layer of the end of the hose piece is folded back, severely limited. This is due in particular to the fact that a slide in the stoppage phase of the bag must almost completely cover a position of the end of the hose piece. This procedure is relatively cumbersome.
Die Aufgabe der vorliegenden Erfindung ist es daher, eine Vorrichtung zur Herstellung von Säcken vorzuschlagen, die eine einfachere Vorgehensweise bei der Öffnung der Enden der Schlauchstücke ermöglicht, wobei diese Enden so geöffnet werden, dass der offene Boden in der Ebene des Sackkörpers liegt.The object of the present invention is therefore to propose a device for producing sacks, which allows a simpler procedure in the opening of the ends of the hose pieces, wherein these ends are opened so that the open bottom is in the plane of the bag body.
Die Aufgabe wird gelöst durch die kennzeichnenden Merkmale des Anspruchs 1. Demnach ist vorgesehen, dass die in der Vorrichtung enthaltene Einrichtung zum Öffnen der Enden der Schlauchstücke Mittel zum Umklappen der Enden der Schlauchstücke aus der horizontalen Lage in eine vertikale Lage enthält. Dabei liegen die beiden Materiallagen weiterhin zusammen. Es wird also ein Ende des Schlauchstücks um rund 90 Grad nach oben gefaltet, so dass zwischen dem Schlauchstück und dem nach oben gefalteten Ende annähernd ein rechter Winkel entsteht. Auch ein Umklappen nach unten um 90 Grad ist prinzipiell denkbar. Auf diese Weise ist es möglich, durch vergleichsweise einfache Öffnungsmittel die beiden Lagen des nach oben oder des nach unten umgefalteten Endes zu trennen und in die Horizontale zu falten. Dieser Vorgang kann dann gleichzeitig für beide Lagen und vor allem während des kontinuierlichen Betriebs erfolgen. Im Endeffekt erhält man ein Schlauchstück mit einem geöffneten Boden, das sich dann nicht von einem in einem Taktbetrieb mit einem geöffneten Boden versehenen Schlauchstück unterscheidet, so dass die bekannte Bodenschließstation verwendet werden kann. Durch die gleichmäßige Arbeitsweise für beide Materiallagen kann das Aufziehen des Bodens schneller erfolgen, so dass sich die Leistungsfähigkeit erheblich steigern lässt.The object is achieved by the characterizing features of claim 1. Accordingly, it is provided that the device contained in the device for opening the ends of the hose pieces includes means for folding over the ends of the hose pieces from the horizontal position to a vertical position. The two material layers continue to lie together. Thus, one end of the tube piece is folded upwards by about 90 degrees, so that approximately between the tube piece and the folded-up end a right angle is created. Also a folding down by 90 degrees is conceivable in principle. In this way it is possible to separate by relatively simple opening means, the two layers of the up or folded down the end and fold into the horizontal. This process can then take place simultaneously for both layers and especially during continuous operation. In effect, a piece of tubing having an open bottom is obtained, which does not differ from a piece of tubing provided with an open bottomed cycle, so that the known bottom closure station can be used. Due to the uniform working method for both material layers, the mounting of the floor can be done faster, so that the performance can be significantly increased.
Mit weiteren Mitteln zum Trennen und Falten der Materiallagen, die Gegenstände der Unteransprüche sind, ist es dann vorgesehen, die beiden Lagen jeweils um 90 Grad von einander weg zu falten, so dass dann die eine Materiallage wieder zurück in die Ursprungsebene zurückgebracht wird und die andere Materiallage weiter auf die Außenseite des Sackkörpers gefaltet wird. Das Ende des Schlauchstücks wird also, nachdem dieses in die Vertikale gebracht wurde, gleichmäßig in beide Richtungen geöffnet. Hierdurch kann der Öffnungsvorgang nicht unerheblich beschleunigt werden. Weitere Details dieses Öffnungsvorgangs werden im Folgenden im Zusammenhang mit den Erläuterungen zu den Mitteln zum Trennen der Materiallagen angegeben.With further means for separating and folding the material layers, which are the subject of the subclaims, it is then provided to fold the two layers 90 degrees away from each other, so that the one material layer is then brought back to the original plane and the other Material layer is further folded on the outside of the bag body. The end of the piece of tubing is thus opened evenly in both directions after it has been placed in the vertical direction. As a result, the opening process can be accelerated significantly. Further details of this opening operation will be given below in connection with the explanation of the means for separating the material layers.
Vorteilhaft ist dabei, wenn die Einrichtung zum Öffnen zumindest eines Endes eines Schlauchstücks für dieses Ende zumindest zwei Erfassungseinrichtungen umfasst, wobei mit jeder Erfassungseinrichtung eine Materiallage des betreffenden Schlauchstücks erfassbar ist und wobei mit den zumindest zwei Erfassungseinrichtungen die Materiallagen voneinander trennbar sind. Diese Erfassungseinrichtungen sind dazu geeignet, Kräfte auf die beiden äußeren Materiallagen aufzubringen, wobei die Kräfte entgegen gesetzt gerichtet sind. Dabei müssen die Kräfte groß genug sein, um eventuell vorhandene attraktive Kräfte, die beispielsweise durch eine elektrostatische Aufladung hervorgerufen werden können, zu überwinden. Die Erfassungseinrichtungen brauchen, wenn die Enden des Schlauchstücks um 90 Grad gegenüber der Horizontalen umgefaltet sind, nur in einer horizontalen Ebene bewegt werden. Dieses spart gegenüber anderen Vorrichtungen zur Herstellung von Säcken, die Gewebe aus gereckten Kunststoffbändchen umfassen, Bauhöhe ein. Wenn die Erfassungseinrichtungen auf umlaufenden Elementen, wie etwa Scheiben, an denen Erfassungseinrichtungen exzentrisch gelagert sind, angeordnet sind, können diese zumindest zeitweise mit gleichem Geschwindigkeitsvektor, der die Geschwindigkeitsrichtung und den Betrag der Geschwindigkeit angibt, wie das Schlauchstück betrieben werden. Somit können die Lagen des Endes eines Schlauchstücks auch dann voneinander getrennt werden, wenn das Schlauchstück im kontinuierlichen Betrieb transportiert wird.It is advantageous if the means for opening at least one end of a piece of tubing for this end comprises at least two detection devices, with each detection means a material layer of the respective piece of tubing can be detected and wherein the material layers are separable from each other with the at least two detection means. These detection devices are adapted to apply forces to the two outer layers of material, wherein the forces are directed opposite. The forces must be large enough to overcome any attractive forces that may be caused by an electrostatic charge, for example. The detection devices need, if the ends of the tube piece are folded over 90 degrees from the horizontal, are moved only in a horizontal plane. This saves compared to other devices for the production of bags comprising woven fabric of stretched plastic, height. If the detection devices are arranged on rotating elements, such as discs, on which detection devices are mounted eccentrically, they can be operated at least temporarily with the same speed vector, which indicates the speed direction and the amount of speed, as the hose section. Thus, the layers of the end of a piece of tubing can be separated even if the piece of tubing is transported in continuous operation.
Besonders geeignet sind für diesen Zweck Sauger, die auf einem Balken angeordnet sein können. Diese können beidseitig an das hochgeklappte Ende herangeführt werden. Nachdem die Sauger mit Unterdruck beaufschlagt wurden, können sie wieder voneinander entfernt werden, so dass die Materiallagen ebenfalls voneinander entfernt werden. Nun ist das Innere des Schlauchstücks zugänglich.Particularly suitable for this purpose suckers that can be arranged on a beam. These can be brought to both sides of the folded-up end. After being subjected to negative pressure, the suction cups can be removed from each other again so that the layers of material are likewise removed from one another. Now the inside of the hose piece is accessible.
Mit der erfindungsgemäßen Vorrichtung sollen selbstverständlich Säcke unterschiedlichen Formats hergestellt werden können. Bevorzugt ist daher vorgesehen, dass die Einrichtung zum Öffnen zumindest eines Endes jeweils eines Schlauchstücks Träger umfasst, an welchen die Erfassungseinrichtungen befestigbar sind. An diesen Trägern können die Erfassungseinrichtungen in verschiedenen Positionen angebracht werden, so dass sich die Materiallagen unabhängig von der Höhe des nach oben gefalteten Endes des Schlauchstücks erfassen lassen. Vorteilhaft ist es dabei, wenn die Träger als Führungen ausgestaltet sind, die parallel zu den umgefalteten Enden des Schlauchstücks, also senkrecht zur Ebene des Schlauchstücks verlaufen. Durch Verschieben der Erfassungseinrichtungen entlang der Führungen sind diese also höhenverstellbar. Mit „höhenverstellbar" ist dabei gemeint, dass der Abstand der Erfassungseinrichtungen zu der Transportebene der Schlauchstücke veränderbar ist. Bei späteren Böden, die eine kleine Breite haben, ist der um 90 Grad umgeklappte Bereich des Schlauchstückendes bereits klein, so dass die Erfassungseinrichtungen entlang der Führungen nahe an die genannte Transportebene heran gebracht werden. Bei großen Bodenbreiten werden die Erfassungselemente weiter von der Transportebene entfernt. Die Führungen können als einfache Stäbe ausgestaltet sein, an welchen die Erfassungseinrichtungen mittels geeigneter Befestigungsmittel, beispielsweise Rändelmuttern, arretiert werden können. Wenn zumindest zwei parallele Führungen für jede Erfassungseinrichtung vorgesehen sind, so lässt sich ein Abkippen der Erfassungseinrichtungen verhindern. Insgesamt lässt sich so eine Erfassungseinrichtung einfach und schnell in ihrem vertikalen Abstand zum Schlauchstück anordnen. Die Höhe des nach oben oder des nach unten gefalteten Endes definiert letztendlich die Breite des fertigen Bodens.With the device according to the invention, of course, bags of different sizes should be able to be produced. It is therefore preferably provided that the device for opening at least one end of each of a piece of hose comprises supports to which the detection devices can be fastened. On these carriers, the detection devices can be mounted in different positions, so that the material layers can be detected independently of the height of the folded-up end of the hose piece. It is advantageous if the carriers are designed as guides which extend parallel to the folded ends of the hose piece, ie perpendicular to the plane of the hose piece. By moving the detection devices along the guides so they are adjustable in height. By "height-adjustable", it is meant that the distance of the detection devices to the transport plane of the hose pieces is changeable.For later soils, which have a small width, the region of the hose piece end folded over by 90 degrees is already small, so that the Detecting devices along the guides are brought close to said transport plane. For large floor widths, the detection elements are further removed from the transport plane. The guides may be configured as simple rods to which the detection means by means of suitable fastening means, such as knurled nuts, can be locked. If at least two parallel guides are provided for each detection device, tilting of the detection devices can be prevented. Overall, such a detection device can be easily and quickly arranged in their vertical distance to the hose piece. The height of the up or down folded end ultimately defines the width of the finished floor.
Eine besonders bevorzugte Ausgestaltung der Erfindung beinhaltet Spreizelemente, welche zwischen die beiden Materiallagen des zu öffnenden Endes des Schlauchstücks einbringbar sind. Weiterhin ist es vorteilhaft, wenn diese Spreizelemente die Materiallagen soweit voneinander weg bewegen, dass diese anschließend vollständig horizontal liegen. Solche Spreizelemente entfalten vor allem dann eine gute Wirkung, wenn sie in Kombination mit den zuvor beschriebenen Erfassungseinrichtungen betrieben werden. In diesem Fall können die Spreizelemente ohne Probleme in den Zwischenraum zwischen den bereits durch die Erfassungselemente voneinander getrennten Materiallagen eintauchen.A particularly preferred embodiment of the invention includes spreading elements, which can be introduced between the two layers of material of the end of the hose piece to be opened. Furthermore, it is advantageous if these spreading elements move the material layers so far away from each other that they are then completely horizontal. Such expansion elements have a good effect especially when operated in combination with the detection devices described above. In this case, the spreading elements can dive without problems in the space between the already separated by the detection elements material layers.
In weiterer Ausgestaltung der Erfindung ist vorgesehen, dass die Einrichtung zum Öffnen eines Endes eines Schlauchstücks zumindest eine Anpresswalze umfasst, welche zusammen mit einer Gegenlage einen Spalt bildet, durch welchen zumindest Teile eines geöffneten Endes eines Schlauchstücks führbar und diese Teile mit einer Presskraft beaufschlagbar sind. Diese Anpresswalze hat also die Aufgabe, den aufgezogenen Boden zu plätten und damit in der geöffneten Form zu fixieren. Damit kann auf die in der eingangs erwähnten Patentschrift offenbarten Prägestempel verzichtet werden, welche zur Anwendung ungeeignet sind, wenn die Schlauchstücke kontinuierlich transportiert werden. Die Gegenlage kann auch aus einer weiteren Walze bestehen. Besonders vorteilhaft ist es, wenn jeder Seite der Vorrichtung eine einzelne Anpresswalze zugeordnet ist, so dass die geöffneten Enden eines Schlauchstücks separat verpresst werden können.In a further embodiment of the invention it is provided that the means for opening one end of a piece of tubing comprises at least one pressure roller, which forms a gap together with an abutment, through which at least parts of an open end of a piece of tubing feasible and these parts can be acted upon by a pressing force. This pressure roller thus has the task to flatten the reared soil and thus to fix in the open mold. Thus, it is possible to dispense with the embossing dies disclosed in the patent mentioned above, which are unsuitable for use when the hose pieces are transported continuously. The counter-layer can also consist of another roller. It is particularly advantageous if each side of the device a individual pressure roller is assigned, so that the open ends of a piece of hose can be pressed separately.
In einer Vorrichtung zur Herstellung von Säcken, welche Gewebe aus gereckten Kunststoffbändchen umfassen, werden in der Regel an beiden Enden Böden angeformt. Da Bodenöffnungsstationen oft viel Bauraum beanspruchen, ist es von besonderem Vorteil diese in Transportrichtung versetzt anzuordnen. Dieser Gedanke wirkt sich besonders vorteilhaft aus, wenn Einrichtungen zum Öffnen zumindest eines Endes eines Schlauchstücks eingesetzt werden, die zuvor beschriebene Elemente umfassen. Grundsätzlich ist dieser Gedanke jedoch unabhängig von den vorgenannten Elementen. Der Ausdruck „in Transportrichtung versetzt" meint dabei, dass ein Bearbeitungsschritt zunächst an einem Ende des Schlauchstücks erfolgt und der gleiche Bearbeitungsschritt am anderen Ende des Schlauchstücks erfolgt, nachdem das Schlauchstück weiter transportiert wurde. Auf diese Weise ist es möglich, Säcke mit einem sehr geringen Bodenmittenabstand herzustellen. Der Bodenmittenabstand ist dabei der Abstand von Faltlinie zu Faltlinie, wobei die Faltlinien diejenigen sind, um die die Endbereiche nach oben geklappt werden. Der Schritt des Aufstellens der Schlauchstückenden erfolgt bevorzugt in der beschriebenen Abfolge, jedoch kann dieser Verfahrensschritt auch für beide Enden gleichzeitig erfolgen, da die entsprechenden Vorrichtungsbestandteile nicht viel Platz benötigen.In a device for the production of sacks, which comprise woven fabric of stretched plastic tapes, soils are usually formed at both ends. Since floor opening stations often require a lot of space, it is particularly advantageous to arrange them offset in the transport direction. This idea is particularly advantageous when means are used to open at least one end of a piece of tubing comprising previously described elements. In principle, however, this idea is independent of the aforementioned elements. The term "offset in the transport direction" means that a processing step takes place first at one end of the hose piece and the same processing step takes place at the other end of the hose piece after the hose piece has been transported further The pitch center distance is the distance from fold line to fold line, the fold lines being the ones around which the end areas are folded upwards.The step of setting up the tube piece ends preferably takes place in the sequence described, but this method step can also be used for both ends occur simultaneously, since the corresponding device components do not need much space.
Ein großer Vorteil einer versetzten Anordnung ist darin zu sehen, dass vor allem die einzelnen Elemente der Bodenöffnungsstation mit denA great advantage of a staggered arrangement is the fact that, above all, the individual elements of the bottom opening station with the
Erfassungselementen und den Spreizelementen von beiden Seiten derDetecting elements and the spreading elements from both sides of the
Vorrichtung und damit sehr gut zugänglich sind. Diesen Vorteil sieht man vor allem dann, wenn man bedenkt, dass in der Bodenöffnungsstation zahlreiche bewegliche Bauteile vorhanden sind, die einem Verschleiß unterliegen und daher regelmäßig gewartet oder ausgetauscht werden müssen.Device and thus are very accessible. This advantage can be seen especially when one considers that in the floor opening station numerous moving components are present, which are subject to wear and therefore must be regularly maintained or replaced.
Weitere Ausführungsbeispiele der Erfindung gehen aus der gegenständlichen Beschreibung und den Ansprüchen hervor. Die einzelnen Figuren zeigen:Further embodiments of the invention will become apparent from the description and the claims. The individual figures show:
Fig. 1 Prinzipskizze einer Vorrichtung zur Herstellung von Gewebesäcken Fig. 2 Perspektivische Ansicht einer Bodenöffnungsstation in einer erfindungsgemäßen Vorrichtung. Fig. 3 Ansicht III - III aus Fig. 2 Fig. 4 Ansicht IV - IV aus Fig. 3 Fig. 5 Ansicht V - V aus Fig. 21 is a schematic diagram of an apparatus for producing tissue sacks. FIG. 2 is a perspective view of a bottom opening station in a device according to the invention. 3 View III - III from FIG. 2 FIG. 4 View IV - IV from FIG. 3 FIG. 5 View V - V from FIG. 2
Die Fig. 1 zeigt schematisch einzelne Schritte zur Verarbeitung eines Gewebeschlauches zu Säcken, wie sie in Sackherstellungsvorrichtung 1 erfolgen.FIG. 1 schematically shows individual steps for processing a fabric tube into sacks, as they take place in sack making device 1.
Zunächst wird der Gewebeschlauch 2 der Sackherstellungsvorrichtung 1 zugeführt. Dies geschieht vorteilhafterweise durch Abwickeln des einen Wickel 3 bildenden Gewebeschlauches in einer Abwicklungseinrichtung 4. Anschließend erfährt der Schlauch 2 die so genannte Öffnung in der Lagentrennstation 5. Dabei wird der Gewebeschlauch um ein Innenwerkzeug herum geführt, welches die beiden Lagen voneinander trennt, so dass sich die Lagen, falls sie bei einem der Herstellungsschritte des Schlauches miteinander verklebt wurden, trennen. Nur bei getrennten Lagen kann sichergestellt werden, dass die folgenden Produktionsschritte ordnungsgemäß durchgeführt werden können. Im Anschluss werden die voneinander getrennten Materiallagen des Schlauches wieder aufeinander gelegt.First, the fabric tube 2 is fed to the sack manufacturing device 1. This is advantageously done by unwinding the fabric 3 forming a fabric tube in a processing device 4. Subsequently, the tube 2 experiences the so-called opening in the layer separation station 5. The fabric tube is guided around an inner tool around which separates the two layers, so that the layers, if they were glued together in one of the manufacturing steps of the tube, separate. Only with separate layers can it be ensured that the following production steps can be carried out properly. Afterwards, the separate material layers of the hose are put back on top of each other.
Der Gewebeschlauch wird nun der Querschneideeinrichtung 6 zugeführt, die den Gewebeschlauch in einzelne Schlauchstücke vereinzelt.The fabric tube is now fed to the cross-cutting device 6, which separates the fabric tube into individual pieces of hose.
Anschließend erfolgt eine Änderung der ursprünglichen Transportrichtung z, in der der Schlauch bzw. die Schlauchstücke in Richtung ihrer Längsachsen transportiert wurden, in die neue Transportrichtung x, so dass die Schlauchstücke nun nicht mehr in Richtung z ihrer Schlauchlängsachse, sondern quer hierzu transportiert werden, so dass die Enden der Schlauchstücke zwecks Anformung der Böden seitlich erreichbar sind. In der folgenden Station, der Bodenöffnungsstation 8, werden beide Enden eines jeden Schlauchstücks geöffnet und die so genannten Bodenquadrate gelegt. In der darauf folgenden Ventilstation 9 wird auf eines der beiden offenen Enden ein Ventil aufgelegt und befestigt. Die offenen Böden werden nun in der Bodenschließstation 10 geschlossen, wobei zwei Laschen aufeinander gelegt und miteinander dauerhaft, beispielsweise durch verschweißen, verbunden werden. Den Abschluss des eigentlichen Sackherstellprozesses bildet das Aufbringen je eines Bodendeckblattes auf die Böden in der Deckblattstation 11. Dazu können die Deckblätter ebenfalls aufgeschweißt werden. Die fertigen Säcke werden anschließend auf dem Sackstapel 12 abgelegt und von dort auf nicht näher beschriebene Weise abtransportiert.Subsequently, a change of the original transport direction z, in which the hose or the hose pieces were transported in the direction of their longitudinal axes, in the new transport direction x, so that the hose pieces are now no longer transported in the direction of z tube longitudinal axis, but transversely thereto, so the ends of the pieces of tubing are laterally accessible for the purpose of forming the bottoms. In the following station, the bottom opening station 8, both ends of each tube piece are opened and the so-called bottom squares are laid. In the following valve station 9, a valve is placed and secured on one of the two open ends. The open floors are now closed in the bottom closing station 10, wherein two tabs placed on each other and permanently, for example, by welding, connected. The conclusion of the actual Sackherstellprozesses forms the application of a ground cover sheet on the floors in the cover sheet station 11. For this purpose, the cover sheets can also be welded. The finished bags are then placed on the bag stack 12 and transported away from there on unspecified manner.
Die Fig. 2 zeigt Details einer Öffnungsstation 5 in einer erfindungsgemäßen Vorrichtung. Die Schlauchstücke 13 werden mittels einer nicht näher gezeigten Transportvorrichtung in Richtung x auf der Oberfläche einer Auflage 14, beispielsweise auf der Oberfläche eines Tisches, flach liegend, also horizontal, transportiert. Um ein Ende 15 des Schlauchstücks erfindungsgemäß zu öffnen, wird dieses Ende zunächst aus der horizontalen Lage in eine vertikale Position gebracht. Um dieses Falten zu ermöglichen, muss das Schlauchstück mit einer Gegenlage beaufschlagt sein. Dazu wird das Schlauchstück 13 unter ein Falzband 16 eingefädelt. Dieses Falzband kann sich relativ zu den Schlauchstücken in Ruhe und damit relativ zur Auflage in Bewegung befinden. Die Schlauchstücke können sich aber auch relativ zu dem Falzband 16 bewegen. Dies ist beispielsweise der Fall, wenn sich das Falzband in Ruhe befindet. Das Falzband kann aus einem flexiblen, aber stark vorgespannten Material bestehen. Vorzugsweise bestehen diese aber aus Stahlblechen, welche auf eine nicht gezeigte Weise mit der Auflage 14 oder mit dem Maschinengestell verbunden sind. Stahlbleche haben gegenüber anderen Bauteilen den Vorteil einer geringeren Dicke bei gleicher Belastbarkeit. Ist das Schlauchstück 13 eingefädelt, wird es anschließend an einem Leitelement 17, beispielsweise einem Leitblech vorbei geführt. Nachdem das Ende 15 des Schlauchstücks 13 in die vertikale Position gebracht worden ist, gelangt dieses zur eigentlichen Bodenöffnungsvorrichtung 18, die in dieser Figur schematisch dargestellt ist. In dieser Bodenöffnungsvorrichtung 18 sind zwei Saugerbalken vorgesehen, die beidseits des hochgeklappten Endes angreifen und in bzw. gegen die Richtung z geführt werden, so dass die Materiallagen voneinander getrennt werden. Gleichzeitig werden die Saugerbalken auch in Richtung X bewegt, um an den weiter transportierten Sack angreifen zu können. Das Innere des Endes 15 des Schlauchstücks 13 ist nun zugänglich. In diesen Innenraum greifen nun Spreizelemente ein, die die Materiallagen weiter auseinander drücken, bis diese wieder horizontal liegen. Diese Situation ist anhand des geöffneten Bodens 19 dargestellt.FIG. 2 shows details of an opening station 5 in a device according to the invention. The tube pieces 13 are transported by means of a transport device not shown in the direction x on the surface of a support 14, for example, on the surface of a table, lying flat, so horizontal. In order to open one end 15 of the hose piece according to the invention, this end is first brought from the horizontal position to a vertical position. To allow this folding, the hose piece must be counteracted. For this purpose, the hose piece 13 is threaded under a folding belt 16. This folding tape can be relative to the hose pieces in peace and thus relative to the support in motion. However, the hose pieces can also move relative to the folding belt 16. This is the case, for example, when the seam is at rest. The rebate belt may consist of a flexible, but highly prestressed material. Preferably, however, these consist of steel sheets, which are connected in a manner not shown with the support 14 or with the machine frame. Steel sheets have the advantage over other components of a smaller thickness with the same load capacity. If the hose piece 13 is threaded, it is then guided past a guide element 17, for example a baffle. After the end 15 of the tube piece 13 has been brought into the vertical position, this comes to the actual bottom opening device 18, which is shown schematically in this figure. In this bottom opening device 18, two suction bars are provided, which engage on both sides of the folded-up end and are guided in or against the direction z, so that the material layers are separated from each other. At the same time, the suction bars are also moved in the direction X in order to be able to attack the further transported bag. The interior of the end 15 of the tube piece 13 is now accessible. Spreading elements now engage in this interior, which push the material layers further apart until they are horizontal again. This situation is illustrated by the open bottom 19.
Das Öffnen des zweiten Endes 15' des Schlauchstücks 13 erfolgt auf gleiche Weise, jedoch versetzt zur Öffnung des ersten Endes 15. Das erste Ende wird bereits in der Bodenöffnungsvorrichtung 18 geöffnet, während das zweite Ende 15' unter das Falzband 16' geführt wird. Mittels dem Leitelement 17' und der Bodenöffnungsvorrichtung 18' wird der geöffnete Boden 19' auf die zuvor beschriebene Art und Weise erzeugt. Eine versetzte Anordnung der Bauteile ist vorteilhaft, wenn Säcke mit sehr kleinen Bodenmittenabstände A produziert werden sollen.The opening of the second end 15 'of the tube piece 13 takes place in the same way, but offset from the opening of the first end 15. The first end is already opened in the bottom opening device 18, while the second end 15' is guided under the folding band 16 '. By means of the guide element 17 'and the bottom opening device 18', the open bottom 19 'is generated in the manner described above. A staggered arrangement of the components is advantageous when bags are to be produced with very small bottom center distances A.
Bei Verlassen der Bodenöffnungsstation 8 liegt das Schlauchstück mit geöffneten Böden 19, 19' vor, wobei alle Bestandteile der geöffneten Böden im Wesentlichen in der Ebene der Auflage 14 liegen.When leaving the bottom opening station 8, the piece of tubing with open bottoms 19, 19 'is present, wherein all components of the opened bottoms are located substantially in the plane of the support 14.
Ein besonderer Aspekt der Bodenöffnungsstation 8 ist darin zu sehen, dass jede Bodenöffnungsvorrichtung 18, 18' durch einen eigenen Antrieb mit Drehmoment versorgt wird. Dies ist durch den Motor 22 an der Bodenöffnungsvorrichtung 18 veranschaulicht. Der entsprechende Motor an der Bodenöffnungsvorrichtung 18' ist in der dargestellten Ansicht nicht sichtbar. Der Motor einer Bodenöffnungsvorrichtung 18, 18' versorgt vor allem die Saugleisten mit einem Antriebsmoment, so dass diese die Materiallagen voneinander weg bewegen können. Auch werden die Spreizelemente von diesem Motor mit Drehmoment versorgt. Den Abschluss der Bodenöffnungsvorrichtungen 18, 18' bilden die Anpresswalzen 23, 23', welche dem Zweck dienen, die frisch geöffneten Böden zu verpressen und damit in ihrer Lage zu fixieren. Die im Rahmen der Bodenöffnung entstandenen Knickkanten werden dabei ausgestrichen und bilden dann richtige Falzkanten, so dass die Tendenz der Böden abnimmt, sich wieder aufzurichten. Als Gegendruckelement zu den Anpresswalzen 23, 23' dient entweder die Auflage 14 oder die Gegendruckwalzen 24, 24'. Die Anpresswalzen 23, 23' sind in der Figur 2 in Transportrichtung x gesehen in gleicher Höhe angeordnet. Diese Walzen 23, 23' können aber auch versetzt zueinander angeordnet sein, damit auch die geöffneten Böden unmittelbar nach dem Öffnungsvorgang auf die beschriebene Weise verpresst werden können.A particular aspect of the bottom opening station 8 is the fact that each bottom opening device 18, 18 'is supplied with torque by its own drive. This is illustrated by the motor 22 on the bottom opening device 18. The corresponding motor on the bottom opening device 18 'is not visible in the illustrated view. The motor of a bottom opening device 18, 18 'primarily supplies the suction bars with a drive torque, so that they can move the material layers away from one another. Also, the spreading elements are powered by this engine with torque. The conclusion of the bottom opening devices 18, 18 'form the pressure rollers 23, 23', which serve the purpose of compressing the freshly opened soils and thus to fix in their position. The resulting in the context of the bottom opening creases are struck out and then form correct folding edges, so that the tendency of the soil decreases, straighten up again. As a counter-pressure element to the pressure rollers 23, 23 'is either the support 14 or the counter-pressure rollers 24, 24'. The pressure rollers 23, 23 'are arranged in the transport direction x seen in Figure 2 at the same height. These rollers 23, 23 'can also be arranged offset from one another, so that the open floors can be pressed immediately after the opening process in the manner described.
Die Figur 3 zeigt die Ansicht Ill-Ill in Figur 2. In dieser Figur 3 sind Details der Bodenöffnungsstation 8 zu erkennen. Zum Erfassen der Materiallagen desFIG. 3 shows the view III-III in FIG. 2. In this FIG. 3, details of the bottom opening station 8 can be seen. For detecting the material layers of the
Endes 15 des Schlauchstücks 13 sind Saugerleisten vorgesehen, von denen die dem Betrachter zugewandte Saugerleiste 20 zu sehen ist. Auf der demEnd 15 of the tube piece 13 are provided with suction bars, of which the viewer facing suction bar 20 can be seen. On the
Betrachter abgewandten Seite der Saugerleiste 20 sind Sauger angeordnet, die die dem Betrachter zugewandte Seite des Endes 15 des Schlauchstücks 13 zu erfassen vermögen.Viewers facing away from the suction bar 20 suckers are arranged, which are able to detect the observer facing side of the end 15 of the hose piece 13.
Da mit der erfindungsgemäßen Vorrichtung 1 Säcke mit unterschiedlichen Bodenbreiten herstellbar sein sollen, besteht die Möglichkeit, dass die hochgeklappten Enden 15 der Schlauchstücke 13 verschiedene Höhen H aufweisen. Um ein ordnungsgemäßen Öffnen der Enden mittels der Sauger zu erreichen, sollten diese möglicht nahe am oberen Ende des Endes 15 angreifen. Zu diesem Zwecke sind die Saugerleisten 20, 20' an vertikalen Führungen 21 , 21 ' lösbar befestigt, so dass die Saugerleisten in Richtung des Doppelpfeils y entlang der hochgeklappten Enden 15 verschoben und entsprechend derer Höhen H justiert werden können. Die Führungen können auf verschiedene Arten ausgeführt sein. Diese können Rund- oder Rechteckprofile, die massiv oder hohl sind, sein. Die Fig. 4 zeigt die Ansicht IV - IV aus der Figur 3. Zusätzlich zu der vorderen Saugerleiste 20 und der vorderen Führung 21 sind nun auch die Saugerleiste 20' und die Führung 21 ' zu erkennen.Since with the device 1 according to the invention bags with different floor widths should be produced, it is possible that the folded ends 15 of the hose pieces 13 have different heights H. In order to achieve a proper opening of the ends by means of the suckers, they should engage as close as possible to the upper end of the end 15. For this purpose, the suction pads 20, 20 'on vertical guides 21, 21' releasably secured, so that the suction pads in the direction of the double arrow y along the folded ends 15 can be moved and adjusted according to their heights H. The guides can be made in various ways. These can be round or rectangular profiles that are solid or hollow. 4 shows the view IV - IV of Figure 3. In addition to the front suction bar 20 and the front guide 21 are now also the suction bar 20 'and the guide 21' can be seen.
Die Figur 5 zeigt die Ansicht V - V der Figur 2. Die Anpresswalze 23 ist in einem Hebelarm 25 oder in einem Hebelarmpaar gelagert. Der Hebelarm 25 selbst ist im Maschinengestell oder in Anbauteilen 26 des Maschinengestells schwenkbar gelagert. In einer Ausführungsform ist der Hebelarm 25 um eine Achse 27, die fest mit Anbauteilen verbunden ist, schwenkbar und auf dieser Achse fixierbar. Dazu kann eine geeignete, aber nicht gezeigte Klemmeinrichtung vorgesehen sein. Mittels der Fixierung des Hebelarms 25 auf der Achse 27 kann der Abstand der Umfangsfläche zu der Gegendruckwalze oder zu der Auflage 14 fest eingestellt werden. Auf diese Weise wird der geöffnete Boden nur dann mit einer Anpresskraft beaufschlagt, wenn diese auch notwendig ist, um die Bestandteile des geöffneten Bodens in die horizontale Ebene zu bringen.FIG. 5 shows the view V - V of FIG. 2. The pressure roller 23 is mounted in a lever arm 25 or in a lever arm pair. The lever arm 25 itself is pivotally mounted in the machine frame or in attachments 26 of the machine frame. In one embodiment, the lever arm 25 about an axis 27 which is fixedly connected to attachments, pivotable and fixable on this axis. For this purpose, a suitable, but not shown clamping device may be provided. By means of the fixing of the lever arm 25 on the axis 27, the distance of the peripheral surface to the counter-pressure roller or to the support 14 can be fixed. In this way, the open bottom is only applied to a pressing force, if this is necessary to bring the components of the open soil in the horizontal plane.
In einer weiteren Ausführungsform kann vorgesehen sein, dass der Hebelarm frei drehbar auf der Achse 27 gelagert ist. Alternativ hierzu kann vorgesehen sein, dass der Hebelarm 25 fest mit einer Welle verbunden ist, welche drehbar in den Anbauteilen gelagert ist. In der genannten Ausführungsform kann nun die Anpresswalze 23 mit einer vorgegebenen Kraft, beispielsweise der eigenen Gewichtskraft auf die geöffneten Böden wirken.In a further embodiment it can be provided that the lever arm is freely rotatably mounted on the axle 27. Alternatively, it can be provided that the lever arm 25 is fixedly connected to a shaft which is rotatably mounted in the attachments. In the mentioned embodiment, the pressure roller 23 can now act on the opened trays with a predetermined force, for example its own weight.
Als Gegenlage für die Anpresswalze, um den geöffneten Boden zu verpressen, kann die Auflage 14, die in der Figur 2 gezeigt ist, dienen. Eine weitere Möglichkeit ist allerdings, eine Gegendruckwalze 24 vorzusehen, mit welcher die Anpresswalze 23 einen Walzenspalt bildet, in welchem die geöffneten Böden 19 verpressbar sind. Die Gegendruckwalze kann drehbar, aber gestellfest angeordnet sein. BezugszeichenlisteAs an abutment for the pressure roller to compress the open bottom, the support 14, which is shown in the figure 2 serve. However, another possibility is to provide a counter-pressure roller 24, with which the pressure roller 23 forms a nip in which the open trays 19 are compressible. The counter-pressure roller can be rotatable, but arranged fixed to the frame. LIST OF REFERENCE NUMBERS
SackherstellungsvorrichtungBag-making apparatus
GewebeschlauchGewebeschlauch
Wickelreel
Abwicklungseinrichtunghandling facility
Offnungsstation , LagentrennstationOpening station, layer separation station
QuerschneideeinrichtungTransverse cutting device
Einrichtung zur Änderung der TransportrichtungDevice for changing the transport direction
BodenöffnungsstationBottom opening station
Ventilstationvalve station
BodenschließstationBottom closing station
DeckblattstationCover Station
Sackstapelbag stack
Schlauchstückhose Connector
Auflage , 15' Ende des Schlauchabschnitts , 16' Falzband , 17' Leitelement , 18' Bodenöffnungsvorrichtung , 19' geöffneter Boden , 20' Saugerleiste , 21 ' vertikale FührungPad, 15 'end of the hose section, 16' folding belt, 17 'guide element, 18' bottom opening device, 19 'open bottom, 20' suction strip, 21 'vertical guide
Motor , 23' AnpresswalzeMotor, 23 'pressure roller
GegendruckwalzeBacking roll
Hebelarmlever arm
Anbauteilattachment
Achse axis

Claims

Vorrichtung und Verfahren zur Herstellung von Säcken, welche Gewebe aus gereckten Kunststoffbändchen umfassenPatentansprüche Apparatus and method for making sacks comprising woven plastic tape fabrics. Claims
1. Vorrichtung zur Herstellung von Säcken aus Schlauchstücken, welche Gewebe aus gereckten Kunststoffbändchen umfassen und aus zwei übereinander liegenden Materiallagen bestehen, zumindest umfassend:1. An apparatus for producing sacks of pieces of tubing, which comprise woven fabric of stretched plastic tapes and consist of two superposed layers of material, at least comprising:
- zumindest eine Transporteinrichtung zum Transportieren der Schlauchstücke in einer Transportrichtung (x), die quer zu ihrer Erstreckungshchtung (z) verläuft, wobei die Schlauchstücke in horizontaler Lage förderbar sind, und- At least one transport device for transporting the hose pieces in a transport direction (x) which extends transversely to its direction of extension (z), wherein the hose pieces are conveyed in a horizontal position, and
- zumindest eine Einrichtung zum Öffnen zumindest eines Endes eines Schlauchstückes, um später Böden anzuformen, dadurch gekennzeichnet, dass die Einrichtung zum Öffnen zumindest eines Endes eines Schlauchstückes die folgenden Elemente umfasst:at least one means for opening at least one end of a piece of tubing to later form soils, characterized in that the means for opening at least one end of a piece of tubing comprises the following elements:
- Mittel zum Umklappen der Enden der Schlauchstücke, mit welchen die beiden Enden der Schlauchstücke aus der aus der Ebene des Schlauchstücks in eine Ebene (y), die im Wesentlichen orthogonal hierzu verläuft, bringbar sind, wobei die Materiallagen weiterhin aufeinander liegen und- Means for folding over the ends of the hose pieces, with which the two ends of the hose pieces from the out of the plane of the hose piece in a plane (y), which is substantially orthogonal thereto, can be brought, wherein the material layers continue to lie on each other and
- Mittel zum Trennen und Falten der Materiallagen, mit welchen die Materiallagen um im Wesentlichen 90 Grad voneinander weg faltbar sind, so dass der geöffnete Boden in der Ebene des Schlauchstücks liegt.- Means for separating and folding the material layers, with which the material layers are foldable by substantially 90 degrees away from each other, so that the open bottom is in the plane of the hose piece.
2. Vorrichtung nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass die Einrichtung zum Öffnen der Enden der Schlauchstücke für jedes Ende des Schlauchstücks zumindest zwei Erfassungseinrichtungen umfasst, wobei mit jeder Erfassungseinrichtung eine Materiallage des betreffenden Endes des Schlauchstücks erfassbar ist und die beiden Materiallagen voneinander trennbar sind.2. Device according to the preceding claim, characterized in that the means for opening the ends of the hose pieces for each end of the hose piece comprises at least two detection means, each detection means a material layer of the respective end of the hose piece can be detected and the two layers of material are separated from each other.
3. Vorrichtung dem vorstehenden Anspruch, dadurch gekennzeichnet, dass die Erfassungseinrichtungen ein oder mehrere auf einem Balken angeordnete Sauger umfasst.3. Device according to the preceding claim, characterized in that the detection means comprises one or more suction bars arranged on a beam.
4. Vorrichtung nach einem der beiden vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Einrichtung zum Öffnen der Enden der Schlauchstücke Träger umfasst, an welchen die Erfassungseinrichtungen befestigbar sind.4. Device according to one of the two preceding claims, characterized in that the means for opening the ends of the hose pieces comprises carriers, to which the detection means can be fastened.
5. Vorrichtung nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass die Träger als Führungen ausgestaltet sind welche orthogonal zu den Schlauchstücken gerichtet sind, so dass die Erfassungseinrichtungen durch Verschieben entlang der Führungen höhenverstellbar sind.5. Device according to the preceding claim, characterized in that the carriers are designed as guides which are directed orthogonal to the tube pieces, so that the detection means are vertically adjustable by displacement along the guides.
6. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Einrichtung zum Öffnen der Enden der Schlauchstücke Spreizelemente umfasst, welche zwischen die beiden Materiallagen eines Endes des Schlauchstücks einbringbar sind und mit welchen diese Materiallagen in die Ebene des Schlauchstücks umfaltbar sind.6. Device according to one of the preceding claims, characterized in that the means for opening the ends of the hose pieces comprises spreading elements which can be introduced between the two layers of material of one end of the hose piece and with which these layers of material in the plane of the hose piece are foldable.
7. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass zumindest eine Anpresswalze vorgesehen ist, welche zusammen mit einer Ge- genlage einen Spalt bildet, durch welchen zumindest Teile eines geöffneten Endes eines Schlauchstücks führbar und diese Teile mit einer Presskraft beaufschlagbar sind.7. Device according to one of the preceding claims, characterized in that at least one pressure roller is provided, which together with a Ge genlage forms a gap through which at least parts of an open end of a piece of hose can be guided and these parts can be acted upon by a pressing force.
8. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass zwei Einrichtungen zum Öffnen jeweils eines Endes eines Schlauchstückes vorgesehen sind, wobei jeder dieser Einrichtungen ein eigener Antrieb zugeordnet ist.8. Device according to one of the preceding claims, characterized in that two means are provided for opening in each case one end of a piece of hose, wherein each of these devices is associated with its own drive.
9. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass für jedes Ende der Schlauchstücke ein Mittel zum Aufstellen eines Endes der Schlauchstücke vorgesehen ist, wobei diese Mittel in Transportrichtung der Schlauchstücke gesehen versetzt angeordnet sind.9. Device according to one of the preceding claims, characterized in that a means for setting up one end of the hose pieces is provided for each end of the hose pieces, said means being arranged offset in the transport direction of the hose pieces.
10. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Erfassungseinrichtungen für ein Ende gegenüber den Erfassungseinrichtungen für das andere Ende gegeneinander versetzt angeordnet sind.10. Device according to one of the preceding claims, characterized in that the detection means are arranged offset for one end relative to the detection means for the other end against each other.
11. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass jede Einrichtung zum Öffnen zumindest eines Endes eines Schlauchstücke einen eigenen Antrieb umfasst.11. Device according to one of the preceding claims, characterized in that each means for opening at least one end of a piece of hose comprises its own drive.
12. Verfahren zur Herstellung von Säcken aus Schlauchstücken, welche Gewebe aus gereckten Kunststoffbändchen umfassen und aus zwei übereinander liegenden Materiallagen bestehen, wobei das Verfahren zumindest die folgenden Verfahrensschritte umfasst:12. A process for the production of sacks from pieces of tubing, which comprise woven fabric of stretched plastic tapes and consist of two superimposed layers of material, the method comprising at least the following method steps:
- Transportieren der Schlauchstücke in einer Transportrichtung (x), die quer zu ihrer Erstreckungsrichtung (z) verläuft, mittels zumindest eine Transporteinrichtung, wobei die Schlauchstücke in horizontaler Lage gefördert werden und - Öffnen zumindest eines Endes eines Schlauchstückes mittels zumindest eine Einrichtung zum Öffnen, um später Böden anformen zu können, dadurch gekennzeichnet, dass vor dem Öffnen des zumindest eines Endes eines Schlauchstücks mittels einem Mittel zum Aufstellen jeweils eines Endes der Schlauchstücke zumindest ein Ende des Schlauchstücks aus der horizontalen Lage in eine vertikale Lage (y) gebracht wird, wobei die Materiallagen weiterhin aufeinander liegen.- Transporting the hose pieces in a transport direction (x) which extends transversely to its direction of extent (z), by means of at least one transport device, wherein the hose pieces are conveyed in a horizontal position and opening at least one end of a piece of tubing by means of at least one means for opening so as to be able to subsequently mold floors, characterized in that before opening the at least one end of a piece of tubing by means for setting up one end of the pieces of tubing at least one end of the piece of tubing is brought from the horizontal position in a vertical position (y), wherein the material layers continue to lie on each other.
13. Verfahren nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass zunächst ein erstes Ende des Schlauchstücks aus der horizontalen Lage in eine vertikale Lage (y) gebracht wird, anschließend das Schlauchstück weiter transportiert wird und dann das zweite Ende des Schlauchstücks aus der horizontalen Lage in eine vertikale Lage (y) gebracht wird. 13. The method according to the preceding claim, characterized in that first a first end of the hose piece from the horizontal position in a vertical position (y) is brought, then the piece of hose is transported further and then the second end of the hose piece from the horizontal position in a vertical position (y) is brought.
EP09727833.7A 2008-04-03 2009-03-30 Apparatus and method for producing sacks which comprise woven fabrics made from stretched small plastic tapes Active EP2288492B1 (en)

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DE102008017442A DE102008017442B4 (en) 2008-04-03 2008-04-03 Apparatus and method for making sacks comprising stretched plastic tape fabrics
PCT/EP2009/053747 WO2009121842A1 (en) 2008-04-03 2009-03-30 Apparatus and method for producing sacks which comprise woven fabrics made from stretched small plastic tapes

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ES2626121T3 (en) 2017-07-24
EP2288492B1 (en) 2017-03-01
BRPI0911265A2 (en) 2015-09-29
JP5743884B2 (en) 2015-07-01
WO2009121842A8 (en) 2010-12-09
CN102006991B (en) 2013-06-19
DE102008017442A1 (en) 2009-10-08
DE102008017442B4 (en) 2013-01-17
AT506551B1 (en) 2016-06-15
AT506551A3 (en) 2015-06-15
CN102006991A (en) 2011-04-06
BRPI0911265B1 (en) 2020-02-04
AT506551A2 (en) 2009-10-15
JP2011516306A (en) 2011-05-26
WO2009121842A1 (en) 2009-10-08

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