EP2302117B1 - Transport bag and method for producing a transport bag - Google Patents
Transport bag and method for producing a transport bag Download PDFInfo
- Publication number
- EP2302117B1 EP2302117B1 EP10009600.7A EP10009600A EP2302117B1 EP 2302117 B1 EP2302117 B1 EP 2302117B1 EP 10009600 A EP10009600 A EP 10009600A EP 2302117 B1 EP2302117 B1 EP 2302117B1
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- EP
- European Patent Office
- Prior art keywords
- warp threads
- fabric
- area
- edge
- fabric web
- 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.)
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- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000004744 fabric Substances 0.000 claims description 143
- 239000011248 coating agent Substances 0.000 claims description 23
- 238000000576 coating method Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 22
- 238000003466 welding Methods 0.000 claims description 15
- -1 polypropylene Polymers 0.000 claims description 8
- 239000002390 adhesive tape Substances 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 238000009958 sewing Methods 0.000 claims description 4
- 239000004831 Hot glue Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000004753 textile Substances 0.000 description 5
- 238000009941 weaving Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 239000012943 hotmelt Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
- D03D1/04—Sack- or bag-like articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/16—Large containers flexible
- B65D88/1612—Flexible intermediate bulk containers [FIBC]
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
- D03D15/43—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with differing diameters
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D5/00—Selvedges
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1362—Textile, fabric, cloth, or pile containing [e.g., web, net, woven, knitted, mesh, nonwoven, matted, etc.]
Definitions
- the invention relates to a flexible transport bag which is formed by sewing at least one fabric web, wherein the fabric web comprises an unattenuated region, as well as warp threads and weft threads and has a weakened region along at least one of the fabric web edges.
- the invention further relates to a method for producing a reinforced fabric edge of a fabric web.
- the EP 1 514 962 A2 describes a method for producing a belt with warp threads and at least one weft thread, wherein a method step comprises the shrinkage of the warp threads in the middle region of the fabric.
- the EP 0 627 513 A1 further describes a fabric for reinforcing or reinforcing fabrics of weft and warp yarns which form open spaces with each other.
- a backing fabric connects to an edge region in which the weft threads and / or the warp threads are reinforced.
- the purpose of this device is the mechanical consolidation of the resulting tissue.
- the above-mentioned step formation is not recognized in this document as a problem to be solved.
- edge regions formed in this way have a strength which is clearly below that of a sulzer edge.
- handling of freely hanging weft threads is problematic in practice.
- the weakened area Due to the fact that warp threads of reduced thickness are provided in the weakened area, the weakened area is significantly thinner than the unattenuated area. However, there are no fringes, as in the in AT 010526 described device, but the coherent tissue is retained. The weakened area is then partially or wholly bent over the unattenuated area and is secured thereto by means of a hot melt adhesive, an adhesive tape, a coating, or a welding process such as heat welding, laser welding, or ultrasonic welding.
- the weakened area can be completely or only partially bent over to the non-weakened area. If the entire weakened area is bent over to the unattenuated area, the resulting fabric edge is particularly robust. It forms, as with the described known method, when rolling up the fabric web a step, which is much thinner, however. Such step formation can be avoided by bending the weakened area only partially to the unattenuated area or, as discussed below Fig. 5 described, the weakened area is bent over on itself. In this case, no level is formed.
- the weakened area has a width of 4 cm during weaving.
- the weakened area is centrally separated by a continuous longitudinal cut, creating at each edge a weakened edge area about 2 cm wide, which is completely turned over.
- the longitudinal section can also be made at any other point of the weakened area, for example, to obtain asymmetric selvedges, without departing from the scope of the invention.
- Typical dimensions of the reinforced fabric edge are in the range of 1 to 3 cm, with preferred widths of the fabric edges being about 1.5 cm to about 2.5 cm.
- the fabric web has a coating on at least one side, preferably on the inside of the transport bag covering the entire surface of the fabric web, including the reinforced fabric edge.
- this coating in the interior of the transport bag so that the pressure of the filled-in material does not release the coating from the fabric.
- a coating of the outside of the transport bag lends itself to protect the fabric from external influences.
- the coating can be made of a plastic, or in particular consist of the material of the fabric web to allow disposal of the transport bag together with the coating.
- the coating may be adapted to the particular application, for example, to have resistance to water, acids, or antistatic.
- the invention provides that the mentioned coating may have a projection over the edge of the fabric web to protect in particular the folded or bent edge region.
- the transport bag is produced by sewing the fabric webs, wherein the seam is formed in the unattenuated area outside of the reinforced fabric edges. According to the invention it is provided in particular that the seam is located about 17 mm to 25 mm from the outer edge of the fabric edge.
- the inventively provided warp threads or weft threads are usually extruded or cut from films plastic tapes, which have a large width in cross-section in relation to their thickness, and which are weaving processable.
- these bands are made of polypropylene, polyester, or polyethylene.
- the warp threads used typically have a thickness of 50 ⁇ m to 200 ⁇ m, in particular 75 ⁇ m to 125 ⁇ m in the unattenuated area and about 25 ⁇ m to 75 ⁇ m, in particular 40 ⁇ m to 60 ⁇ m in the weakened area.
- the thickness of the warp threads in the weakened region is about 50% of the thickness of the warp threads in the unattenuated region.
- the width of the warp threads is typically between 1.5 mm and 4 mm.
- the warp threads with a reduced thickness in the weakened area are wider than the warp threads in the unattenuated area.
- the density of the warp threads in the edge region can be, for example, 4 to 8 warp threads per centimeter, in particular 5 warp threads per centimeter.
- This method is used to produce the fabric webs of the transport bag described, but can also be used for the production of fabric webs with reinforced fabric edge for any other purpose.
- the method according to the invention comprises securing the weakened region to the fabric web by means of hot melt, heat welding, ultrasonic welding or adhesive tape.
- the longitudinal separation of the weakened area may be centered or at any other location to create symmetrical or asymmetric fabric edges.
- the weakening of the weakened area can be done in part or entirely on the unattenuated area, as a result of which the rolled-up fabric web has a more or less large step.
- a coating can be applied, which can cover the entire surface of the fabric web including the reinforced fabric edge, and may protrude in particular in the form of a protrusion over the edge of the fabric web.
- the reinforced fabric edge has a width of 1 cm to 3 cm, preferably a width of 1.5 cm to 2.5 cm is used. This means in particular that the weakened area before cutting can typically have a width of 2 cm to 6 cm.
- the warp threads used are usually made of polypropylene, polyester or polyethylene. They are typically about 50% thinner in the weakened region than in the non-weakened region, preferably using the thicknesses mentioned above.
- the inventive method further provides that in the weakened area, the warp threads are made wider with reduced thickness than in the unattenuated Area. For example, 4 to 8, in particular 5 warp threads are provided with reduced thickness per centimeter in the weakened area.
- the method according to the invention likewise comprises a transport bag, which is produced by the described method.
- Fig. 1 shows a first embodiment of a erfindunoniaen transport bag 1 in a perspective view, the figure is purely schematic, and other features of the transport bag, such as straps or inserts are not shown for ease of illustration.
- the transport bag 1 comprises a plurality of fabric webs 2, which are sewn together at their edges with a seam 9.
- the fabric web 2 has an unattenuated area 10 and a reinforced fabric edge 5.
- the seam 9, in favor of a higher strength of the connection, outside the reinforced fabric edge 5 in the unattenuated area 10 extends.
- embodiments are also possible where the seam runs in the reinforced fabric edge.
- the in Fig. 1 shown transport bag is characterized by the sewing of four fabric webs.
- the present invention is not limited thereto and also includes embodiments comprising any number of fabric webs.
- Fig. 2 shows a perspective view of the fabric web, as it is formed immediately after its preparation on a loom.
- the representation is purely schematic and the size ratios are heavily oversubscribed.
- the tubular fabric web 2 has an unattenuated area 10 and a weakened area 6, which results from the use of thinner warp threads.
- the fabric web 2 is severed longitudinally along a cutting line 11 to obtain a flat web of fabric.
- this longitudinal section along the section line 11 is centered in the weakened area 6.
- the section extends at a different location within the weakened area 6, or in which the fabric webs are cut at several points.
- the longitudinal section must run within the weakened region 6 in order to obtain the advantages of the device according to the invention and the method according to the invention described above.
- Fig. 3 shows a perspective view of the fabric web 2.
- the fabric web 2 comprises an unattenuated area 10 and, on the unattenuated area bent weakened area 6.
- the bent portion forms the reinforced fabric edge 5.
- the fabric web 2 comprises warp threads 3 and weft threads 4, which the known Form weave pattern.
- the specific embodiment of the weave pattern is not relevant to the present invention.
- the warp threads of reduced thickness 7 are used instead of the warp threads 3. For this reason, the weakened region 6 has a significantly reduced thickness, as in FIG Fig. 3 is apparent.
- Fig. 4 shows a further embodiment of a fabric web 2 according to the invention in cross section along a weft thread 4.
- the fabric web 2 comprises Warp yarns 3, weft yarns 4 and warp yarns of reduced thickness 7.
- the fabric web 2 may be further subdivided into the unclouded region 10, the weakened region 6 and the reinforced fabric edge 5 which is formed by folding the weakened region 6 onto the non-weakened region 10. It should be noted that in the embodiment of Fig. 4 the weakened area 6 is completely turned over to the unattenuated area 10.
- the fabric web 2 further comprises a coating 8, which is attached to the top of the fabric web 2. Furthermore, the embodiment of the invention has a projection 12 of the coating 8.
- the weakened region 6 may be attached to the non-weakened region 10 by means of an adhesive, an adhesive film with the coating, or a welding process.
- Fig. 5 shows a further inventive embodiment of a fabric web 2 in cross-section along a weft thread 4, which has warp threads 3, weft threads 4, and warp threads of reduced thickness 7.
- the fabric web 2 comprises an unattenuated region 10 and a weakened region 6, by means of which the reinforced fabric edge 5 is formed by bending over it.
- the bending of the weakened area is not on the unattenuated area 10. Rather, the weakened area 6 is bent centrally on itself. This has the consequence that the reinforced fabric edge is only slightly thicker than the non-weakened region 10, whereby after application of the coating 8 virtually no step formation occurs.
- the coating 8 is formed without projection on the fabric edge 5.
- FIGS. 6 to 8 show in detail how the reinforced fabric edge 5 is formed, on the basis of the cross section of an embodiment according to the invention the fabric web 2 along a weft thread 4.
- a fabric web 2 in Fig. 6 which has warp threads 3
- weft threads 4 and warp threads of reduced thickness 7 in a weakened area 6 is obtained by bending the weakened area 6 and fixing it on the weakened area 10 in FIG Fig. 7
- the State in Fig. 8 reached, in which the reinforced fabric edge 5 is formed, which is formed by turning the weakened area 6 on the unattenuated area 10.
- the fabric web 2 can be provided on at least one of its sides with a coating, as in 4 and FIG. 5 was shown.
- the present invention is not limited to the embodiments of fabric sheets for transport sacks shown in the figures, but also includes fabric sheets for any other purposes, as long as they have the described reinforced fabric edge. Also, the validity of the invention is not limited to the discussed dimensions of the warp threads or wefts used. Furthermore, the invention is not limited to stitched transport bags, but also includes structures formed of fabric webs, which are connected to each other in any other way, as long as the described reinforced fabric edge is used.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Woven Fabrics (AREA)
- Bag Frames (AREA)
- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
Description
Die Erfindung betrifft einen flexiblen Transportsack, der durch Vernähen wenigstens einer Gewebebahn gebildet ist, wobei die Gewebebahn einen ungeschwächten Bereich, sowie Kettfäden und Schussfäden umfasst und entlang wenigstens einer der Gewebebahnkanten über einen geschwächten Bereich verfügt.The invention relates to a flexible transport bag which is formed by sewing at least one fabric web, wherein the fabric web comprises an unattenuated region, as well as warp threads and weft threads and has a weakened region along at least one of the fabric web edges.
Die Erfindung betrifft weiters ein Verfahren zur Herstellung einer verstärkten Gewebekante einer Gewebebahn.The invention further relates to a method for producing a reinforced fabric edge of a fabric web.
Bei der Herstellung von sogenannten "Big Bags" oder "FIBC" (Flexible Intermediate Bulk Container) wird im Allgemeinen flexibles Textilgewebe verwendet. Derartiges Textilgewebe ist bekannt und kann auf Flach- oder Rundwebstühlen hergestellt werden. Dementsprechend spricht man von Flachgewebe oder Rundgewebe. Auf diese Weise hergestelltes Gewebe weist das allgemein bekannte Webmuster auf, bei dem sich Schussfäden und Kettfäden immer wieder kreuzen. Die konkrete Ausführungsform des verwendeten Webverfahrens ist für die vorliegende Erfindung jedoch unerheblich.In the production of so-called "Big Bags" or "FIBC" (Flexible Intermediate Bulk Container) is generally used flexible textile fabric. Such textile fabric is known and can be produced on flat or round looms. Accordingly one speaks of flat fabric or round fabric. Fabric produced in this way has the well-known weave pattern in which weft threads and warp threads intersect again and again. However, the specific embodiment of the weaving method used is irrelevant to the present invention.
Bei der Herstellung des oben genannten Transportsacks müssen Gewebebahnen des genannten Textilgewebes zusammengenäht werden. Berücksichtigt man, dass die Transportsäcke für eine erhebliche Belastung ausgelegt werden (beispielsweise liegt der Verwendungsbereich bei 1000 kg, wobei eine Sicherheit von bis zu 5000 kg gefordert sein kann), so liegt auf der Hand, dass die verwendeten Gewebebahnen an ihren Kanten einen sehr hohen Widerstand gegen das Herausreißen des Gewebes aus der Naht aufweisen müssen. Aus diesem Grund ist es bekannt das verwendete Textilgewebe mit verstärkten Webkanten zu versehen.In the production of the above-mentioned transport bag fabric webs of said textile fabric must be sewn together. Taking into account that the transport bags are designed for a considerable load (for example, the use range is 1000 kg, with a safety of up to 5000 kg may be required), it is obvious that the used fabric webs at their edges a very high Resistance to tearing out of the fabric must have from the seam. For this reason, it is known to provide the textile fabric used with reinforced selvedges.
Wird das Textilgewebe auf einem Flachwebstuhl hergestellt, ist es bekannt, eine sogenannte Sulzerkante auszubilden. Dabei werden im Kantenbereich die Schussfäden umgelegt und in das gebildete Gewebe eingelegt. Dies ist jedoch ein teurer und vergleichsweise langsamer Vorgang, außerdem sind Flachwebemaschinen im Allgemeinen teurer als Rundwebemaschinen.If the textile fabric is produced on a flat loom, it is known to form a so-called Sulzerkante. The weft threads are folded over in the edge region and inserted into the fabric formed. However, this is a costly and relatively slow process, moreover, flat weaving machines are generally more expensive than looms.
Es ist bekannt, Gewebebahnen in gewünschter Breite aus Rundgewebe herzustellen, indem das Rundgewebe durch einen kontinuierlichen Längsschnitt durchtrennt wird. Bei diesem Herstellungsverfahren werden alle Schussfäden des Rundgewebes in einer Linie durchtrennt. Die Herstellung einer Sulzerkante ist in diesem Fall nicht möglich. Um die so entstandenen Gewebekanten zu festigen, wird das Gewebe am Randbereich umgelegt und mit einer Naht oder mittels Ultraschalltechnologie befestigt. Diese häufig angewandte Lösung hat jedoch mehrere Nachteile. Zunächst beansprucht dieser Vorgang zusätzliches Material, typischerweise bis zu 8% der Gewebebreite, und verteuert damit die Herstellung. Ein weiteres Problem tritt beim Aufrollen der gebildeten Gewebebahnen auf. Aufgrund der Verdoppelung der Materialstärke an den Kanten der Gewebebahnen kommt es zur Bildung einer Stufe, die das Handhaben der gebildeten Gewebebahnrollen erschwert.It is known to produce fabric webs in the desired width of round fabric by the round fabric is severed by a continuous longitudinal section. In this manufacturing process, all the weft threads of the round fabric are cut in a line. The production of a Sulzer edge is not possible in this case. In order to strengthen the resulting fabric edges, the fabric is folded over at the edge area and fastened with a seam or with ultrasound technology. However, this frequently used solution has several disadvantages. First, this process requires additional material, typically up to 8% of the fabric width, making production more expensive. Another problem arises when rolling up the fabric webs formed. Due to the doubling of the material thickness at the edges of the fabric webs, a step is formed which makes it difficult to handle the formed fabric web rolls.
Die
Ein weiterer bekannter Lösungsansatz besteht darin, die freiliegenden Kettfäden und Schussfäden im Randbereich mit Hilfe einer Ultraschallschweißvorrichtung zu verschweißen. Es hat sich jedoch gezeigt, dass ein derartiger verschweißter Randbereich nicht die geforderte Festigkeit aufweist, und die zugeführte Schweißenergie sehr genau geregelt werden muss, um eine Beschädigung des Gewebes zu verhindern.Another known approach is to weld the exposed warp threads and weft threads in the edge region by means of an ultrasonic welding device. However, it has been found that such a welded edge region does not have the required strength, and the supplied welding energy must be controlled very precisely in order to prevent damage to the fabric.
Aus dem Gebrauchsmuster
Weitere gattungsgemäße Transportsäcke mit einer verstärkten Gewebekante sind aus den Druckschriften
Es hat sich jedoch herausgestellt, dass die so gebildeten Kantenbereiche eine Festigkeit aufweisen, die doch deutlich unter der einer Sulzerkante liegt. Überdies ist die Handhabung von frei hängenden Schussfäden in der Praxis problematisch.However, it has been found that the edge regions formed in this way have a strength which is clearly below that of a sulzer edge. Moreover, the handling of freely hanging weft threads is problematic in practice.
Es stellt sich damit die Aufgabe, eine Gewebebahn für einen Transportsack herzustellen, die auf einer Rundgewebemaschine durch einen kontinuierlichen Längsschnitt gebildet wird, und eine Kante aufweist, die einerseits eine mit der bekannten Sulzerkante vergleichbare Festigkeit aufweist, und andererseits beim Aufrollen der Gewebebahn keine oder nur eine geringe Stufenbildung zur Folge hat.It thus sets itself the task of producing a fabric web for a transport bag, which is formed on a round fabric machine by a continuous longitudinal section, and has an edge which on the one hand has a comparable strength with the known Sulzerkante, and on the other hand when rolling up the fabric web or only results in a small step formation.
Diese Aufgabe wird erfindungsgemäß durch einen Transportsack gemäß Anspruch 1 und ein Verfahren zur Herstellung eines flexiblen Transportsacks mit einer verstärkten Gewebekante gemäß Anspruch 11 gelöst.This object is achieved by a transport bag according to
Dadurch, dass im geschwächten Bereich Kettfäden mit reduzierter Dicke vorgesehen sind, ist der geschwächte Bereich deutlich dünner als der ungeschwächte Bereich. Es bilden sich jedoch keine Fransen, wie bei der in
Wie erwähnt, kann der geschwächte Bereich zur Gänze oder nur zum Teil auf den ungeschwächten Bereich umgebogen werden. Wird der gesamte geschwächte Bereich auf den ungeschwächten Bereich umgebogen, so ist die resultierende Gewebekante besonders robust. Es bildet sich, wie bei den beschriebenen bekannten Verfahren, beim Aufrollen der Gewebebahn eine Stufe, die jedoch deutlich dünner ist. Eine derartige Stufenbildung kann dadurch vermieden werden, dass der geschwächte Bereich nur zum Teil auf den ungeschwächten Bereich umgebogen wird, oder, wie weiter unten in Bezug auf
Beispielsweise hat der geschwächte Bereich beim Weben eine Breite von 4 cm. Der geschwächte Bereich wird durch einen kontinuierlichen Längsschnitt mittig getrennt, wodurch an jeder Kante ein etwa 2 cm breiter geschwächter Kantenbereich entsteht, der zur Gänze umgeschlagen wird. Der Längsschnitt kann auch an jeder anderen Stelle des geschwächten Bereichs erfolgen, um beispielsweise asymmetrische Webkanten zu erhalten, ohne den Bereich der Erfindung zu verlassen. Typische Abmessungen der verstärkten Gewebekante sind im Bereich von 1 bis 3 cm, wobei bevorzugte Breiten der Gewebekanten etwa 1,5 cm bis etwa 2,5 cm sind.For example, the weakened area has a width of 4 cm during weaving. The weakened area is centrally separated by a continuous longitudinal cut, creating at each edge a weakened edge area about 2 cm wide, which is completely turned over. The longitudinal section can also be made at any other point of the weakened area, for example, to obtain asymmetric selvedges, without departing from the scope of the invention. Typical dimensions of the reinforced fabric edge are in the range of 1 to 3 cm, with preferred widths of the fabric edges being about 1.5 cm to about 2.5 cm.
Um zu verhindern, dass das im Transportsack geförderte Gut mit dem Gewebe in Kontakt kommt, bzw. um das Gewebe vor dem beförderten Gut zu schützen, ist erfindungsgemäß vorgesehen, dass die Gewebebahn an mindestens einer Seite, bevorzugt an der Innenseite des Transportsacks, eine Beschichtung aufweist, welche die gesamte Oberfläche der Gewebebahn, einschließlich der verstärkten Gewebekante, bedeckt. Erfindungsgemäß ist insbesondere vorgesehen, diese Beschichtung im Innenraum des Transportsacks anzubringen, damit der Druck des eingefüllten Materials nicht die Beschichtung vom Gewebe löst. Eine Beschichtung der Außenseite des Transportsacks bietet sich an, um das Gewebe vor äußeren Einflüssen zu schützen. Die Beschichtung kann aus einem Kunststoff hergestellt sein, oder insbesondere aus dem Material der Gewebebahn bestehen, um eine Entsorgung des Transportsacks gemeinsam mit der Beschichtung zu ermöglichen. Im Übrigen kann die Beschichtung dem jeweiligen Verwendungszweck angepasst sein, um etwa Beständigkeit gegen Wasser, Säuren, oder Antistatik aufzuweisen. Weiters ist erfindungsgemäß vorgesehen, dass die erwähnte Beschichtung einen Überstand über den Rand der Gewebebahn aufweisen kann, um insbesondere den umgeschlagenen bzw. geknickten Kantenbereich zu schützen.In order to prevent the material conveyed in the transport bag from coming into contact with the fabric or to protect the fabric from the goods being conveyed, it is provided according to the invention that the fabric web has a coating on at least one side, preferably on the inside of the transport bag covering the entire surface of the fabric web, including the reinforced fabric edge. According to the invention, it is provided in particular to apply this coating in the interior of the transport bag so that the pressure of the filled-in material does not release the coating from the fabric. A coating of the outside of the transport bag lends itself to protect the fabric from external influences. The coating can be made of a plastic, or in particular consist of the material of the fabric web to allow disposal of the transport bag together with the coating. Incidentally, the coating may be adapted to the particular application, for example, to have resistance to water, acids, or antistatic. Furthermore, the invention provides that the mentioned coating may have a projection over the edge of the fabric web to protect in particular the folded or bent edge region.
Erfindungsgemäß ist weiters vorgesehen, dass der Transportsack durch Vernähen der Gewebebahnen hergestellt wird, wobei die Naht im ungeschwächten Bereich außerhalb der verstärkten Gewebekanten ausgebildet ist. Erfindungsgemäß ist insbesondere vorgesehen, dass die Naht sich etwa 17 mm bis 25 mm vom äußeren Rand der Gewebekante befindet.According to the invention it is further provided that the transport bag is produced by sewing the fabric webs, wherein the seam is formed in the unattenuated area outside of the reinforced fabric edges. According to the invention it is provided in particular that the seam is located about 17 mm to 25 mm from the outer edge of the fabric edge.
Die erfindungsgemäß vorgesehenen Kettfäden bzw. Schussfäden sind üblicherweise extrudierte oder aus Folien geschnittene Kunststoffbändchen, die im Querschnitt eine große Breite im Verhältnis zu ihrer Dicke haben, und die webtechnisch verarbeitbar sind. Beispielsweise sind diese Bändchen aus Polypropylen, Polyester, oder Polyethylen ausgeführt. Die verwendeten Kettfäden haben typischerweise eine Dicke von 50 µm bis 200 µm, insbesondere 75 µm bis 125 µm im ungeschwächten Bereich und etwa 25 um bis 75 µm, insbesondere 40 µm bis 60 µm im geschwächten Bereich. Vorzugsweise liegt die Dicke der Kettfäden im geschwächten Bereich bei etwa 50% der Dicke der Kettfäden im ungeschwächten Bereich. Die Breite der Kettfäden liegt typischerweise zwischen 1,5 mm und 4 mm.The inventively provided warp threads or weft threads are usually extruded or cut from films plastic tapes, which have a large width in cross-section in relation to their thickness, and which are weaving processable. For example, these bands are made of polypropylene, polyester, or polyethylene. The warp threads used typically have a thickness of 50 μm to 200 μm, in particular 75 μm to 125 μm in the unattenuated area and about 25 μm to 75 μm, in particular 40 μm to 60 μm in the weakened area. Preferably, the thickness of the warp threads in the weakened region is about 50% of the thickness of the warp threads in the unattenuated region. The width of the warp threads is typically between 1.5 mm and 4 mm.
Erfindungsgemäß ist weiters vorgesehen, dass die Kettfäden mit reduzierter Dicke im geschwächten Bereich breiter sind als die Kettfäden im ungeschwächten Bereich. Damit erzielt man den Vorteil, dass weniger Spulen mit den dünneren Kettfäden ausgerüstet werden müssen, wodurch wiederum Arbeitszeit eingespart wird. Die Dichte der Kettfäden im Randbereich kann beispielsweise 4 bis 8 Kettfäden pro Zentimeter, insbesondere 5 Kettfäden pro Zentimeter betragen.According to the invention, it is further provided that the warp threads with a reduced thickness in the weakened area are wider than the warp threads in the unattenuated area. This provides the advantage that fewer coils must be equipped with the thinner warp threads, which in turn saves labor time. The density of the warp threads in the edge region can be, for example, 4 to 8 warp threads per centimeter, in particular 5 warp threads per centimeter.
Die genannten Zahlen sind als Richtwerte zu verstehen und beschränken nicht den Umfang der vorliegenden Erfindung.The numbers mentioned are to be understood as guidelines and do not limit the scope of the present invention.
Weitere Merkmale der Erfindung sind den Ansprüchen, der Beschreibung und den Ausführungsbeispielen zu entnehmen.Further features of the invention can be taken from the claims, the description and the exemplary embodiments.
Erfindungsgemäß ist weiters ein Verfahren zur Herstellung eines flexiblen Transportsacks mit einer verstärkten Gewebekante einer Gewebebahn vorgesehen, welches dadurch gekennzeichnet ist, dass
- a) entlang mindestens eines geschwächten Bereichs der Gewebebahn Kettfäden mit reduzierter Dicke verwendet werden, welche dünner sind als die Kettfäden im ungeschwächten Bereich;
- b) das Gewebe entlang des geschwächten Bereichs bevorzugt mittig aufgeschnitten wird; und
- c) der geschwächte Bereich zum Teil oder bevorzugt zur Gänze auf den ungeschwächten Bereich umgebogen wird, wodurch eine verstärkte Gewebekante gebildet wird, wobei der geschwächte Bereich an der Gewebebahn mittels Schmelzkleber, Hitzeschweißen, Ultraschallschweißen oder Klebeband befestigt wird.
- a) using, along at least one weakened region of the fabric web, warp threads of reduced thickness, which are thinner than the warp threads in the unattenuated area;
- b) the tissue is preferably cut centrally along the weakened area; and
- c) partially or preferably entirely bending the weakened area to the unattenuated area, thereby forming a reinforced fabric edge, the weakened area being secured to the fabric panel by hot melt, heat welding, ultrasonic welding or adhesive tape.
Dieses Verfahren dient zur Herstellung der Gewebebahnen des beschriebenen Transportsacks, kann aber auch zur Herstellung von Gewebebahnen mit verstärkter Gewebekante für jeden anderen Zweck verwendet werden.This method is used to produce the fabric webs of the transport bag described, but can also be used for the production of fabric webs with reinforced fabric edge for any other purpose.
Das erfindungsgemäße Verfahren umfasst, dass der geschwächte Bereich an der Gewebebahn mittels Schmelzkleber, Hitzeschweißen, Ultraschallschweißen oder Klebeband befestigt wird. Wie oben erwähnt, kann die longitudinale Trennung des geschwächten Bereichs mittig oder an jeder anderen Stelle erfolgen, um symmetrische oder asymmetrische Gewebekanten zu erzeugen. Das Umbiegen des geschwächten Bereichs kann zum Teil oder zur Gänze auf den ungeschwächten Bereich erfolgen, wodurch die aufgerollte Gewebebahn in Folge eine mehr oder weniger große Stufe aufweist.The method according to the invention comprises securing the weakened region to the fabric web by means of hot melt, heat welding, ultrasonic welding or adhesive tape. As mentioned above, the longitudinal separation of the weakened area may be centered or at any other location to create symmetrical or asymmetric fabric edges. The weakening of the weakened area can be done in part or entirely on the unattenuated area, as a result of which the rolled-up fabric web has a more or less large step.
Erfindungsgemäß ist weiter vorgesehen, dass bei dem Verfahren auf mindestens einer Seite der Gewebebahn eine Beschichtung aufgetragen werden kann, welche die gesamte Oberfläche der Gewebebahn einschließlich der verstärkten Gewebekante bedecken kann, und insbesondere in Form eines Überstands über den Rand der Gewebebahn hinausragen kann. Beispielsweise weist die verstärkte Gewebekante eine Breite von 1 cm bis 3 cm auf, wobei bevorzugt eine Breite von 1,5 cm bis 2,5 cm verwendet wird. Dies bedeutet insbesondere, dass der geschwächte Bereich vor dem Zerschneiden typischerweise eine Breite von 2 cm bis 6 cm aufweisen kann.According to the invention it is further provided that in the method on at least one side of the fabric web a coating can be applied, which can cover the entire surface of the fabric web including the reinforced fabric edge, and may protrude in particular in the form of a protrusion over the edge of the fabric web. For example, the reinforced fabric edge has a width of 1 cm to 3 cm, preferably a width of 1.5 cm to 2.5 cm is used. This means in particular that the weakened area before cutting can typically have a width of 2 cm to 6 cm.
Die verwendeten Kettfäden sind üblicherweise aus Polypropylen, Polyester oder Polyethylen ausgeführt. Sie sind im geschwächten Bereich typischerweise etwa 50% dünner ausgeführt als im ungeschwächten Bereich, wobei bevorzugt die weiter oben genannten Dicken verwendet werden.The warp threads used are usually made of polypropylene, polyester or polyethylene. They are typically about 50% thinner in the weakened region than in the non-weakened region, preferably using the thicknesses mentioned above.
Das erfindungsgemäße Verfahren sieht weiters vor, dass im geschwächten Bereich die Kettfäden mit reduzierter Dicke breiter ausgeführt sind als im ungeschwächten Bereich. Beispielsweise werden im geschwächten Bereich pro Zentimeter 4 bis 8, insbesondere 5 Kettfäden mit reduzierter Dicke vorgesehen.The inventive method further provides that in the weakened area, the warp threads are made wider with reduced thickness than in the unattenuated Area. For example, 4 to 8, in particular 5 warp threads are provided with reduced thickness per centimeter in the weakened area.
Das erfindungsgemäße Verfahren umfasst ebenfalls einen Transportsack, welcher nach dem beschriebenen Verfahren hergestellt wird.The method according to the invention likewise comprises a transport bag, which is produced by the described method.
Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen mit Bezug auf die folgenden Zeichnungen näher erläutert:
-
Fig. 1 zeigt schematisch einen erfindungsgemäßen Transportsack in perspektivischer Ansicht, -
Fig. 2 zeigt schematisch eine erfindungsgemäße Gewebebahn vor dem Zerschneiden in perspektivischer Ansicht, -
Fig. 3 zeigt eine erfindungsgemäße Gewebebahn nach dem Umbiegen des geschwächten Bereichs in perspektivischer Ansicht, -
Fig. 4 zeigt einen Querschnitt durch eine erfindungsgemäße Gewebebahn nach einem ersten Ausführungsbeispiel, -
Fig. 5 zeigt einen Querschnitt durch eine erfindungsgemäße Gewebebahn nach einem zweiten Ausführungsbeispiel, -
Fig. 6 bis Fig. 8 zeigen Querschnitte durch eine erfindungsgemäße Gewebebahn nach dem Ausführungsbeispiel vonFig. 4 .
-
Fig. 1 schematically shows a transport bag according to the invention in a perspective view, -
Fig. 2 schematically shows a fabric web according to the invention before cutting in perspective view, -
Fig. 3 shows a fabric web according to the invention after bending over the weakened region in a perspective view, -
Fig. 4 shows a cross section through a fabric web according to the invention according to a first embodiment, -
Fig. 5 shows a cross section through a fabric web according to the invention according to a second embodiment, -
Fig. 6 to Fig. 8 show cross sections through a fabric web according to the invention according to the embodiment ofFig. 4 ,
Die
Die vorliegende Erfindung beschränkt sich jedoch nicht auf die in den Figuren gezeigten Ausführungsbeispiele von Gewebebahnen für Transportsäcke, sondern umfasst auch Gewebebahnen für beliebige andere Einsatzzwecke, solange sie die beschriebene verstärkte Gewebekante aufweisen. Auch ist die Gültigkeit der Erfindung nicht auf die besprochenen Abmessungen der verwendeten Kettfäden oder Schussfäden beschränkt. Weiters ist die Erfindung nicht auf vernähte Transportsäcke beschränkt, sondern umfasst auch aus Gewebebahnen gebildete Strukturen, die auf beliebige andere Art miteinander verbunden sind, solange die beschriebene verstärkte Gewebekante verwendet wird.However, the present invention is not limited to the embodiments of fabric sheets for transport sacks shown in the figures, but also includes fabric sheets for any other purposes, as long as they have the described reinforced fabric edge. Also, the validity of the invention is not limited to the discussed dimensions of the warp threads or wefts used. Furthermore, the invention is not limited to stitched transport bags, but also includes structures formed of fabric webs, which are connected to each other in any other way, as long as the described reinforced fabric edge is used.
- 11
- Transportsacktransport bag
- 22
- Gewebebahnfabric web
- 33
- Kettfädenwarp
- 44
- Schussfädenwefts
- 55
- Verstärkte GewebekanteReinforced fabric edge
- 66
- Geschwächter BereichWeakened area
- 77
- Kettfäden mit reduzierter DickeWarp threads of reduced thickness
- 88th
- Beschichtungcoating
- 99
- Nahtseam
- 1010
- Ungeschwächter BereichUnprotected area
- 1111
- Schnittlinieintersection
- 1212
- ÜberstandGot over
Claims (18)
- A flexible container bag (1) formed by sewing up at least one fabric web (2), wherein the fabric web (2) comprises an unweakened area (10) as well as warp threads (3) and weft threads (4) and has a weakened area (6) along at least one of the edges of the fabric web, wherein the warp threads (3) in the weakened area (6) are thinner than the warp threads in the unweakened area (10), wherein the weakened area (6) of the fabric web (2) is partially or preferably entirely folded onto the unweakened area (10) and forms a reinforced fabric edge (5), characterized in that the weakened area (6) of the fabric web (2) is attached to the unweakened area (10) by means of a hot-melt adhesive, heat welding, ultrasonic welding or an adhesive tape and in that the warp threads with reduced thickness (7) in the weakened area (6) are configured to have an increased width compared to the warp threads (3) in the unweakened area (10).
- The flexible container bag according to claim 1, characterized in that the fabric web (2) has a coating (8) on at least one side, preferably on the inside of the container bag, the coating covering the entire surface of the fabric web, including the reinforced fabric edge (5).
- The flexible container bag according to claim 2, characterized in that the coating (8) projects beyond the edge of the fabric web (2) in the form of a projection (12).
- The flexible container bag according to one of claims 1 to 3, characterized in that the reinforced fabric edge (5) has a width of 1 cm to 3 cm, preferably 1.5 cm to 2.5 cm.
- The flexible container bag according to one of claims 1 to 4, characterized in that the fabric webs are sewn together by means of a seam (9), wherein the seam in the unweakened area (10) is formed outside the reinforced fabric edge (5).
- The flexible container bag according to claim 5, characterized in that the seam (9) is formed 17 mm to 25 mm from the outer edge of the fabric edge.
- The flexible container bag according to one of claims 1 to 6, characterized in that the warp threads (3), the weft threads (4) and/or the warp threads with reduced thickness (7) are made of polypropylene, polyester or polyethylene.
- The flexible container bag according to one of claims 1 to 7, characterized in that the warp threads (3) have a thickness of 50 µm to 200 µm, preferably 75 µm to 125 µm, in the unweakened area (10) and that the warp threads with reduced thickness (7) have a thickness of 25 µm to 75 µm, preferably 40 µm to 60 µm, in the weakened area (6).
- The flexible container bag according to one of claims 1 to 8, characterized in that 4 to 8, preferably 5, warp threads with reduced thickness (7) per centimeter are provided in the weakened area (6).
- The flexible container bag according to one of claims 1 to 9, characterized in that the warp threads with reduced thickness (7) are configured to be about 50 % thinner than the warp threads (3) in the unweakened area (10).
- A method for producing a flexible container bag with a reinforced fabric edge (5) of a fabric web (2), wherein warp threads with reduced thickness (7), which are thinner than the warp threads (3) in the unweakened area (10), are used along at least one weakened area (6) of the fabric web (2) and wherein the fabric is cut open centrally along the weakened area (6) and the weakened area (6) is centrally folded onto itself, whereby the reinforced fabric edge (5) is formed, characterized in that the weakened area (6) is attached to the fabric web (2) by means of a hot-melt adhesive, heat welding, ultrasonic welding or an adhesive tape and in that the warp threads with reduced thickness (7) in the weakened area (6) are configured to have an increased width compared to the warp threads (3) in the unweakened area (10).
- The method according to claim 11, characterized in that the fabric web (2) is provided with a coating (8) on at least one side, the coating covering the entire surface of the fabric web, including the reinforced fabric edge (5).
- The method according to one of claims 11 or 12, characterized in that the coating (8) is configured to project beyond the edge of the fabric web (2) in the form of a projection (12).
- The method according to one of claims 11 to 13, characterized in that the reinforced fabric edge (5) is configured to have a width of 1 cm to 3 cm, preferably 1.5 cm to 2.5 cm.
- The method according to one of claims 11 to 14, characterized in that the warp threads (3) and/or the warp threads with reduced thickness (7) are made of polypropylene, polyester or polyethylene.
- The method according to one of claims 11 to 15, characterized in that the warp threads (3) have a thickness of 50 µm to 200 µm, preferably 75 µm to 125 µm, in the unweakened area (10) and in that the warp threads with reduced thickness (7) have a thickness of 25 µm to 75 µm, preferably 40 µm to 60 µm, in the weakened area (6).
- The method according to one of claims 11 to 16, characterized in that 4 to 8, preferably 5, warp threads with reduced thickness (7) per centimeter are provided in the weakened area (6).
- The method according to one of claims 11 to 17, characterized in that the warp threads with reduced thickness (7) are configured to be about 50 % thinner in the weakened area (6) than the warp threads (3) in the unweakened area (10).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0148409A AT508364B1 (en) | 2009-09-21 | 2009-09-21 | TRANSPORT BAG AND METHOD FOR PRODUCING AN AMPLIFIED TISSUE EDGE |
Publications (3)
Publication Number | Publication Date |
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EP2302117A2 EP2302117A2 (en) | 2011-03-30 |
EP2302117A3 EP2302117A3 (en) | 2014-01-22 |
EP2302117B1 true EP2302117B1 (en) | 2019-09-04 |
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EP10009600.7A Active EP2302117B1 (en) | 2009-09-21 | 2010-09-15 | Transport bag and method for producing a transport bag |
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US (1) | US8459871B2 (en) |
EP (1) | EP2302117B1 (en) |
AT (1) | AT508364B1 (en) |
Families Citing this family (9)
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AT512240B1 (en) * | 2011-11-22 | 2014-01-15 | Greif Flexibles Trading Holding Bv | TRANSPORT CONTAINER |
EP2935032B2 (en) * | 2012-12-20 | 2023-06-07 | Société des Produits Nestlé S.A. | Flexible pouch with a larger opening |
BR112015030610B1 (en) | 2013-06-05 | 2021-10-05 | Ameriglobe, Llc | METHOD OF PRODUCTION OF A BULK BAG OF FLEXIBLE POLYPROPYLENE FABRIC |
US10479599B2 (en) * | 2015-12-17 | 2019-11-19 | Ameriglobe, Llc | Industrial bag lift loop assembly |
WO2017216742A1 (en) * | 2016-06-17 | 2017-12-21 | Codefine S.A. | Method for production of bags for the transport and storage of bulk goods or liquids, and bag obtained according to the method |
EP3257990A1 (en) * | 2016-06-17 | 2017-12-20 | Codefine S.A. | Method for production of bags for the transport and storage of bulk goods or liquids, and bag obtained according to the method |
DE102017109350C5 (en) | 2017-02-14 | 2022-11-10 | Andocksysteme G. Untch Gmbh | Transport, handling and storage containers |
US11591156B1 (en) | 2019-08-29 | 2023-02-28 | Ameriglobe, Llc | Lift loop assembly test process and apparatus |
CN110923895B (en) * | 2019-11-11 | 2023-12-19 | 肇庆市鼎湖兴文塑胶五金制品有限公司 | Braiding method for webbing edge edging |
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ATE161592T1 (en) | 1993-05-19 | 1998-01-15 | Synteen Gewebe Technik Gmbh | FABRIC FOR REINFORCEMENT OR REINFORCEMENT OF SURFACE STRUCTURES |
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2010
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- 2010-09-21 US US12/886,628 patent/US8459871B2/en active Active
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EP2302117A3 (en) | 2014-01-22 |
EP2302117A2 (en) | 2011-03-30 |
AT508364A4 (en) | 2011-01-15 |
US20110142378A1 (en) | 2011-06-16 |
AT508364B1 (en) | 2011-01-15 |
US8459871B2 (en) | 2013-06-11 |
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