EP1340679A1 - Forming shoulder for manufacturing three-side-sealed tubular bags - Google Patents

Forming shoulder for manufacturing three-side-sealed tubular bags Download PDF

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Publication number
EP1340679A1
EP1340679A1 EP03003636A EP03003636A EP1340679A1 EP 1340679 A1 EP1340679 A1 EP 1340679A1 EP 03003636 A EP03003636 A EP 03003636A EP 03003636 A EP03003636 A EP 03003636A EP 1340679 A1 EP1340679 A1 EP 1340679A1
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EP
European Patent Office
Prior art keywords
film
channel
shoulder
shaped
slot
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
EP03003636A
Other languages
German (de)
French (fr)
Other versions
EP1340679B1 (en
Inventor
Gunter Kurth
Heinrich-Stephan Möbs
Alexander Herd
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.)
Hassia Verpackungsmaschinen GmbH
Original Assignee
Hassia Verpackungsmaschinen GmbH
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
Priority claimed from DE2002109356 external-priority patent/DE10209356A1/en
Application filed by Hassia Verpackungsmaschinen GmbH filed Critical Hassia Verpackungsmaschinen GmbH
Publication of EP1340679A1 publication Critical patent/EP1340679A1/en
Application granted granted Critical
Publication of EP1340679B1 publication Critical patent/EP1340679B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/213Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles the web having intermittent motion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/22Forming shoulders; Tube formers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B2210/00Specific aspects of the packaging machine
    • B65B2210/02Plurality of alternative input or output lines or plurality of alternative packaging units on the same packaging line for improving machine flexibility
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B2220/00Specific aspects of the packaging operation
    • B65B2220/22Interconnected packages concurrently produced from the same web, the packages not being separated from one another

Definitions

  • the invention relates to a shaped shoulder for the production of Three-sided sealed-edge tubular bags according to the preamble of Claim 1.
  • a shape shoulder of the type mentioned is known and in Use for which, however, no printed proof can be provided.
  • Deviating from the introductory mentioned form shoulder is the shawl collar A special foil guide surfaces according to US-A-6,006,501 Subsequent molding, one over his has a relatively short length of constant cross section, which roughly corresponds to an eight. This will be supplementary also in relation to the above-mentioned US-A-6,006,501 significantly older and prepublished DE-A-27 30 169 and DE-A-29 32 236.
  • the invention is based on the shape of the shoulder of the beginning mentioned type, accordingly the task underlying this to improve that already from the emergence of the film web on the form shoulder, excluding those immediately downstream Fittings are taken care of already a gradual adaptation of the film web to that for longitudinal sealing typical end cross section of the film tube he follows.
  • the Foil leading edge in plan view in the direction of the foil passage slightly convex penetration curve of the surface the rear wall and the film inlet surface.
  • This for Film inlet edge leading film inlet surface points to the film inlet edge sidewall regions converging and becoming wider on that steadily rising from the inflow surface merge into the two side, sloping foil guide surfaces.
  • the leading edge experiences one Reorganization into a weakly curved penetration curve.
  • Such a form has been shown the leading edge already in this area to a better one Adaptation of the incoming film to the cross-sectional shape of the Foil flow channel in the form shoulder.
  • the convex extension becomes weak the edge areas of the incoming film web are drawn in a little more. This improves the edge areas of the film web to the strongly concave side edge curvatures of the flow channel adapts in the area of the two form or filler tubes extend and in their area so far with straight extension to observe certain wrinkles on the film leading edge were.
  • An embodiment can also consist in that the seen from the front wedge-shaped cutout and the slit in relation arranged asymmetrically on the center of the film leading edge are. This leads to a double hose in which one has a larger cross section than the other.
  • the shape shoulder with its film passageway and the channel covers formed from a block in which the Flow channel with its inner wall contour according to the invention is formed with suitable means (milling / eroding).
  • suitable means milling / eroding.
  • the Shaped parts are those on the back wall of the film strip applied film strip edges with the back wall in known Longitudinally sealed.
  • the shorter word Former is used instead of the shape shoulder.
  • 1 schematically shows the arrangement of the former 1 in a packaging machine, indicated only by dashed lines, in which the film strip FS drawn off from a roll R is converted into a double tube DS by means of the former 1.
  • 100 is a longitudinal sealing tool and 101 is a transverse sealing tool.
  • the clocked deduction of the film strip FS from the roll R is caused by the up and down movable cross sealing tools 101. From the shaped tubes 13 and the curved side walls 12 a passage gap 20 is formed for the film.
  • the former consists of a reference to Fig.2 and Fig.3 block-like shaped piece 1, in which there is an up and down inside open film flow channel 2 extends.
  • the formers after the Fig.2 and Fig.3 differ only in that with the 2 a symmetrical double hose (see Fig. 1A) and with the former according to Fig. 3 an asymmetrical double hose (Fig. 1B) is generated.
  • the channel 2 extends from the upper film leading edge 3 Rear wall 4 of the channel 2 up to the outlet opening 5 (see Fig. 7) of channel 2.
  • This channel 2 is forward through two channel front walls 6 limited.
  • the steadily at the film leading edge 3 Define the subsequent shape edges 7 of the front walls 6 a wedge-shaped, in the direction of film P (see Fig.1) oriented section 9, which merges into a slot 8 bez. expires.
  • the channel front walls 6 are on the outside in the form of a shawl collar, which ends at the slot 8 Foil guiding surfaces 10 are formed, which continuously correspond to corresponding Foil guide surfaces 10 'on the main body of the former 1 connect.
  • the rear wall 4 from the film leading edge 3 and / or the inner surfaces 11 of the channel front walls 6 in the film passage direction P and from the channel side regions 12 (see Fig. 6,7) towards the lower end of the slot 8 are approximately formed asymptotically.
  • FIG. 17 As mentioned in the introduction, such an approach exists three possibilities, which is illustrated very schematically in FIG. 17 is.
  • the front walls approach 6 of the vertical back wall 4.
  • the rear wall 4 approaches the vertical front walls 6 on and in the right example, which is preferred, are approaching the rear wall 4 and the front walls 6 together towards each other.
  • FIGS. 4 to 11 is an embodiment in which both the rear wall 4 and the inner surfaces 11 of the channel front walls 6 each other or an imaginary one, dash-dotted lines in Fig. 6, vertical center plane E approach asymptotically.
  • This approach is achieved that in the rear wall 4 (see in particular Fig. 9 to 11) one is formed small, trapezoidal cross-section ramp 4 '.
  • the ramp 4 ' sets with a fraction of the width B '(see Fig.4) of the film leading edge 3 at this and steadily increases in height H and base width B to the end of the slot 8 too.
  • Bezgl. the bigger Cross-sections of the ramp 4 'are shown in FIGS. 8 to 11 referenced in which also the heights and widths H, B and B 'with are specified.
  • the former 1 is with its film passageway 2 and Channel front walls 6, as shown in FIGS. 1, 2, from one Block formed, for example by means of CNC milling or by means of an erosion process accordingly program-controlled and so far can be produced identically reproducibly.
  • the block 7 advantageous by a in the direction of flow P and 3 parallel to the film leading edge, vertical Extension plane E '(see Fig. 8 to 11) under training separate channel front walls 6 divided. In terms of such a division is referred in particular to FIG. 8.
  • the aforementioned manufacturing methods make it possible without problems and advantageously, who touched it when it passed through the film web Areas (film guide surfaces 10, 10 ') of the former at least in the run-up area 13 of the block 7 with a nub or to provide waffle iron-like surface structure OS that is indicated in only a partial area in FIG.
  • Structuring is sufficient for depths in the tenths of a millimeter range sufficient sterilizing agent between the film guide surfaces 10,10 'and the film strip FS arrive provided the tubular bag under sterile conditions must be manufactured, which is usually the case.
  • the film leading edge 3 in plan view a slightly convex in the direction of the film passageway 2
  • Penetration curve DK is made up of the penetrations the surface of the rear wall 4 and the film inlet surface 3 '.
  • the film inlet surface 3 ' has, as from the top view 14, converging towards the penetration curve DK and widening sidewall areas 14 that steadily increasing from the surface 3 'into the film guide surfaces 10 'as shown in sections XV-XV and XVI-XVI 15, 16 is shown.
  • the previously described ramp 4 ' is of course also present in this embodiment.
  • This design of the film leading edge 3 in the form of a convex curve penetration curve DK according to the present Invention is achieved that it is already in this area of Formers 1 for a better adjustment of the incoming film strip FS to the cross-sectional shape of the film flow channel 4 is coming.
  • the edge areas of the incoming film are namely this pulls in a little more, which makes the film better to the strongly concave side edge curvatures of the flow channel 2 adapts. Otherwise occurring with a straight film leading edge 3 certain wrinkles are thereby avoided or greatly reduced.
  • FIG. 18 is a double bag strand DS with its longitudinal sealing seam LS and its transverse sealing seams QS shows how it works in a former Fig. 3.4 results. 19 finally shows two unequal widths Pouches that appear after separation along the dashed line Lines T from the strand according to Fig. 18 result.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Bag Frames (AREA)

Abstract

The forming collar to produce three-sided sealed edge plastic bags consists of a former (1) in which extends a through-channel (2) for the plastic film. At the front, the channel is bounded by two covers, the forming edges of which define a wedge-shaped cut-out (9) changing into a slot (8) which has film guiding surfaces. The channel rear wall from the film inlet edge (3), and/or the inner faces of the channel covers in the film passage direction and from the channel side regions to the end of the slot, are formed approximately asymptotically.

Description

Die Erfindung betrifft eine Formschulter zur Herstellung von Dreiseiten-Siegelrand-Schlauchbeuteln gemäß Oberbegriff des Patentanspruches 1.The invention relates to a shaped shoulder for the production of Three-sided sealed-edge tubular bags according to the preamble of Claim 1.

Mit solchen Formschultern werden die beiden Randbereiche einer der Formschulter zulaufenden Packstoffbahn gegen den Mittelteil der Bahn umgebogen und mit diesem längsversiegelt. Dadurch entstehen zwei zusammenhängende Schläuche, die nach getakteter Quersiegelung und Füllung mit einem geeigneten Werkzeug zum Längsschneiden getrennt oder in Längsrichtung perforiert werden, und zwar zwischen den beiden Längssiegelnähten. In der Regel sind dabei mehrere Formschultern unmittelbar nebeneinander angeordnet, über die die Streifen einer vorher entsprechend mehrfach längsgeschnittenen und entsprechend breiten Packstoffbahn einlaufen. In die Formschultern und die mit diesen erzeugten Schlauchstränge ragen entsprechend dimensionierte Füll- bzw. Formrohre ein.With such shaped shoulders, the two edge areas become one of the forming shoulder of the packaging material web against the middle part bent the web and sealed longitudinally with it. Thereby two coherent hoses are created, which are clocked Cross sealing and filling with a suitable tool for Longitudinal cuts are separated or perforated in the longitudinal direction, between the two longitudinal seams. In the As a rule, several form shoulders are directly next to each other arranged over which the strips correspond to one previously several longitudinally cut and correspondingly wide Enter the packaging material web. In the form shoulders and with correspondingly dimensioned protrude hose strands generated Filling or shaped pipes.

Eine Formschulter der eingangs genannten Art ist bekannt und in Benutzung, für die allerdings kein druckschriftlicher Nachweis erbracht werden kann. Verwiesen werden kann jedoch auf die US-A-6,006,501, deren sogenante Formstation eine ähnliche Formschultergestaltung zum Gegenstand hat. Abweichend von der einleitend genannten Formschulter ist hierbei den schalkragenartigen Folienleitflächen nach der US-A-6,006,501 ein spezielles Formteil unmittelbar nachgeordnet, das einen über seine relativ geringe Länge gleichbleibenden Querschnitt aufweist, der in etwa dem einer Acht entspricht. Hierzu wird ergänzend auch auf die in Bezug auf die oben genannte US-A-6,006,501 wesentlichen älteren und vorveröffentlichten DE-A-27 30 169 und DE-A-29 32 236 verwiesen. Bei den Gegenständen der US-A-6,006,501 und der DE-A-29 32 236 ragen die Füllrohre von oben her in die Formschülter ein, und bei der DE-A-27 30 169 ragen die Füllrohre unterhalb einer sogenannten Umlenkeinrichtung in die gebildeten, aber noch offenen Schlauchhälften von der Seite her ein.A shape shoulder of the type mentioned is known and in Use for which, however, no printed proof can be provided. However, reference can be made to US-A-6,006,501, whose so-called molding station has a similar shape shoulder design the subject. Deviating from the introductory mentioned form shoulder is the shawl collar A special foil guide surfaces according to US-A-6,006,501 Subsequent molding, one over his has a relatively short length of constant cross section, which roughly corresponds to an eight. This will be supplementary also in relation to the above-mentioned US-A-6,006,501 significantly older and prepublished DE-A-27 30 169 and DE-A-29 32 236. For the articles of US-A-6,006,501 and DE-A-29 32 236 the filling pipes protrude from above forth in the form and protrude from DE-A-27 30 169 the filling pipes below a so-called deflection device in the formed, but still open tube halves from the side here.

Bei der Formschulter der eingangs genannten Art hat sich herausgestellt, daß diese nur bei extrem dünnen und gut biegsamen Verpackungsfolien einigermaßen funktioniert, was auch für die Formschulter nach der genannten US-A-6,006,501 mit dem nachgeschalteten Formstück gelten dürfte, da sich hierbei die in das nachgeordnete Formstück von der Formschulter her schon doppelrohrfömig einlaufende Folie gewissermaßen schlagartig an den achtförmigen Querschnitt des Durchlaufkanales im Formstück anpassen muß. Der Durchlaufkanal an diesem speziellen Formstück entspricht dabei auch schon auf der Zulaufseite der Packstoffbahn dem gewünschten Endquerschnitt bzw. dem Auslaufquerschnitt.With the form shoulder of the type mentioned at the outset, it has been found that this is only possible with extremely thin and flexible Packaging films work to some extent, which also for the Form shoulder according to the mentioned US-A-6,006,501 with the downstream Fitting should apply, since this is in the subordinate fitting from the form shoulder already double-tube-shaped film, so to speak, suddenly the eight-shaped cross section of the flow channel in the fitting must adjust. The flow channel on this special fitting corresponds to the packaging material web on the inlet side the desired end cross-section or the outlet cross-section.

Der Erfindung liegt, ausgehend von der Formschulter der eingangs genannten Art, demgemäß die Aufgabe zugrunde, diese dahingehend zu verbessern, daß schon vom Auflaufen der Folienbahn auf die Formschulter her unter Ausschluß unmittelbar nachgeschalteter Formstücke dafür gesorgt wird, daß schon von daher eine sukzessive Anpassung der Folienbahn an den zur Längssiegelung auslaufenden typischen Endquerschnitt des Folienschlauches erfolgt.The invention is based on the shape of the shoulder of the beginning mentioned type, accordingly the task underlying this to improve that already from the emergence of the film web on the form shoulder, excluding those immediately downstream Fittings are taken care of already a gradual adaptation of the film web to that for longitudinal sealing typical end cross section of the film tube he follows.

Diese Aufgabe ist mit einer Formschulter der eingangs genannten Art nach der Erfindung durch die im Kennzeichen des Patentanspruches 1 angeführten Merkmale gelöst.This task is with a form shoulder of the aforementioned Kind according to the invention by the in the characterizing part of the claim 1 listed features solved.

Bevorzugt wird dabei die sich aus der Alternativmaßgabe "und/ oder" ergebende Ausführungsform, bei der sich sowohl die Rückwand als auch die hier sogenannten Kanalabdeckungen asymptotisch an das untere Ende des Schlitzes annähern. Eine solche asymptotische Annäherung ist dabei auf eine gedachte Längsmittelebene durch den Kanal bezogen. Bzgl. der asymptotischer Annäherung "auch von den Kanalseitenbereichen aus" sei darauf hingewiesen, daß die Breite des Kanales davon unbeeinträchtigt bleibt, d.h., die Breite des Durchlaufkanales in der Formschulter bleibt von oben bis unten gleich. Den erfindungsgemäßen Durchlaufkanal hat man sich dabei gewissermaßen als breitgequetschten Trichter vorzustellen, dessen beide Randbereiche jedoch keine zum Auslauf orientierte Konvergenz aufweisen.Preferred is the result of the alternative stipulation "and / or "resulting embodiment in which both the rear wall as well as the so-called channel covers here asymptotic approach the lower end of the slot. Such the asymptotic approximation is on an imaginary longitudinal median plane sourced through the canal. Concerning. the asymptotic Approach "also from the channel side areas" is on it noted that the width of the channel is unaffected remains, i.e. the width of the flow channel in the form shoulder stays the same from top to bottom. The invention Pass-through channel has, so to speak, as Imagine the wide-squeezed funnel, the two edge areas however, have no convergence oriented towards discontinuation.

Als besonders günstig hat sich eine Weiterbildung der Formschulter dahingehend erwiesen, daß in der Rückwand des Durchlaufkanales eine im Querschnitt trapezförmige Rampe ausgeformt ist, deren Querschnitte, mit einem Null-Querschnitt und einem Bruchteil der Breite der Folieneinlaufkante an dieser ansetzend, sich stetig in Höhe und der Basisbreite bis zum Ende des Schlitzes zumehmend vergrößern. Dies wird noch näher anhand einer entsprechend zeichnerischen Darstellung erläutert.A further development of the form shoulder has proven to be particularly favorable proved that in the rear wall of the flow channel formed a trapezoidal cross-section ramp is, their cross sections, with a zero cross section and a Attaching a fraction of the width of the film leading edge to this, steadily in height and the base width to the end increasing the slot. This will be explained in more detail a corresponding graphical representation.

Eine vorteilhafte Weiterbildung besteht auch darin, daß die Folieneinlaufkante in Draufsicht eine in Richtung Foliendurchlaufkanal schwach konvex gewölbte Durchdringungskurve der Fläche der Rückwand und der Folienzulauffläche bildet. Diese zur Folieneinlaufkante führende Folienzulauffläche weist zur Folieneinlaufkante hin konvergierende und breiter werdende Seitenwandbereiche auf, die aus der Zülauffläche stetig ansteigend in die beiden seitlichen, abfallenden Folienleitflächen übergehen. Durch diese Ausbildung erfährt die Einlaufkante eine Umbildung zu einer gewissermaßen schwach geschwungenen Durchdringungskurve. Wie sich gezeigt hat, führt eine solche Form der Einlaufkante bereits in diesem Bereich zu einer besseren Anpassung der zulaufenden Folie an die Querschnittsform des Foliendurchlaufkanales in der Formschulter. Durch diese spezielle Kurvengestaltung der Einlaufkante, d.h., durch deren in Bezug auf den Durchlaufkanal schwach konvexe Erstreckung werden die Randbereiche der zulaufenden Folienbahn etwas stärker eingezogen. Dadurch werden die Randbereiche der Folienbahn besser an die stark konkaven Seitenrandwölbungen des Durchlaufkanales anpaßt, in deren Bereich sich die beiden Form- bzw. Füllrohre erstrecken und in deren Bereich bislang bei gerade Erstreckung der Folieneinlaufkante gewisse Fältelungen der Folie zu beobachten waren. An advantageous further development is that the Foil leading edge in plan view in the direction of the foil passage slightly convex penetration curve of the surface the rear wall and the film inlet surface. This for Film inlet edge leading film inlet surface points to the film inlet edge sidewall regions converging and becoming wider on that steadily rising from the inflow surface merge into the two side, sloping foil guide surfaces. Through this training, the leading edge experiences one Reorganization into a weakly curved penetration curve. Such a form has been shown the leading edge already in this area to a better one Adaptation of the incoming film to the cross-sectional shape of the Foil flow channel in the form shoulder. Through this special Curving of the leading edge, i.e. by its in With respect to the flow channel, the convex extension becomes weak the edge areas of the incoming film web are drawn in a little more. This improves the edge areas of the film web to the strongly concave side edge curvatures of the flow channel adapts in the area of the two form or filler tubes extend and in their area so far with straight extension to observe certain wrinkles on the film leading edge were.

Unter Beibehaltung der vorerläuterten grundsätzlichen Maßgaben kann eine Ausführungsform ferner auch darin bestehen, daß der frontal gesehen keilförmige Ausschnitt und der Schlitz in Bezug auf die Mitte der Folieneinlaufkante asymmetrisch angeordnet sind. Dies führt zu einem Doppelschlauch, bei dem der eine einen größeren Querschnitt hat als der andere.While maintaining the basic principles outlined above An embodiment can also consist in that the seen from the front wedge-shaped cutout and the slit in relation arranged asymmetrically on the center of the film leading edge are. This leads to a double hose in which one has a larger cross section than the other.

Ferner ist die Formschulter mit ihrem Foliendurchlaufkanal und den Kanalabdeckungen aus einem Block gebildet, in dem der Durchlaufkanal mit seiner erfindungsgemäßen Innenwandkontur mit geeigneten Mitteln (fräsen/erodieren) ausgeformt wird. Um diese Herausarbeitung des Durchlaufkanales aus dem Block möglichst einfach zu gestalten, ist dieser vorteilhaft durch eine in Durchlaufrichtung und zur Folieneinlaufkante parallel erstreckte Trennebene geteilt, was ebenfalls noch näher erläutert wird.Furthermore, the shape shoulder with its film passageway and the channel covers formed from a block in which the Flow channel with its inner wall contour according to the invention is formed with suitable means (milling / eroding). Around this working out the flow channel from the block if possible simple to design, this is advantageous due to a in the direction of passage and parallel to the film leading edge Dividing plane divided, which is also explained in more detail becomes.

Durch die erfindungsgemäße Ausbildung der Formschulter und in Verbindung mit den beiden diese durchgreifenden Füllrohren wird der einer solchen Formschulter zulaufende Packstoffbahnstreifen schon von der Folieneinlaufkante aus stetig und ohne Verzug in die Endform des Doppelschlauches überführt. Nach Verlassen des Formstückes werden die an die Rückwand des Folienstreifens angelegten Folienstreifenränder mit der Rückwand in bekannter Weise längsversiegelt.Through the inventive design of the shape shoulder and in Connection with the two through these filling pipes the strip of packaging material tapering from such a shaped shoulder even from the film leading edge and without warping in transferred the final shape of the double hose. After leaving the Shaped parts are those on the back wall of the film strip applied film strip edges with the back wall in known Longitudinally sealed.

Die erfindungsgemäße Formschulter und vorteilhafte Weiterbildungen werden nachfolgend anhand der zeichnerischen Darstellung von Ausführungsbeispielen näher erläutert.
Es zeigt

FIG. 1
schematisch die Anordnung der Formschulter an einer nur gestrichelt angedeuteten Schlauchbeutelverpackungsmaschine;
FIG. 1A
im Schnitt einen mit einer Formschulter gemäß FIG.2 hergestellten Doppelschlauch;
FIG. 1B
im Schnitt einen mit einer Formschulter gemäß FIG.3 hergestellten Doppelschlauch;
FIG. 2
perspektivisch eine symmetrische Ausführungsform der Formschulter;
FIG.3
perspektivisch eine asymmetrische Ausführungsform der Formschulter;
FIG.4
die Formschulter nach Fig.3 in Vorderansicht;
FIG.5
die Formschulter nach Fig.4 in Seitenansicht;
FIG.6
die Formschulter nach Fig.4 in Ansicht von oben;
FIG.7
die Formschulter nach Fig.4 in Ansicht von unten;
FIG.8
die Formschulter nach Fig.4 in Ansicht von unten und in besonderer Ausführungsform;
FIG.9-11
Schnitte durch die Formschulter längs der Linien IX-IX, X-X, XI-XI in Fig.4;
FIG.12
eine besondere Ausführungsform der Formschulter;
FIG.12A
schematisch die Vorderansicht einer Schlauchbeutel-Maschine mit vier in Reihe angeordneten Formern;
FIG.13
eine weitere und bevorzugte Ausführungsform der Formschulter;
FIG.14
eine Draufsicht auf die Formschulter nach FIG.13;
FIG.15
stark vergrößert einen Schnitt durch die Formschulter längs Linie XV-XV in FIG.14;
FIG.16
stark vergrößert einen Schnitt durch die Formschulter längs Linie XVI-XVI in FIG.14;
FIG.17
schematisch drei Schnitte durch den Kanal der Formschulter senkrecht zur Rückwand zur Darstellung des Prinzips unterschiedlicher Annäherungen der Rückwand und der Vorderwände der Formschulter;
FIG.18
den mit dem Formschulter gemäß FIG.3 oder nFig. 13 gebildeten Doppelschlauch in Seitenansicht und
Fig.19
einen Schnitt durch den Doppelschlauch gemäß Fig.18 längs Linie XVIII-XVIII in FIG.17.
The shape shoulder according to the invention and advantageous developments are explained in more detail below with reference to the drawing of exemplary embodiments.
It shows
FIG. 1
schematically the arrangement of the shape shoulder on a tubular bag packaging machine indicated only by dashed lines;
FIG. 1A
in section a double hose manufactured with a shaped shoulder according to FIG. 2;
FIG. 1B
in section a double hose manufactured with a shaped shoulder according to FIG. 3;
FIG. 2
in perspective a symmetrical embodiment of the shape shoulder;
FIG.3
in perspective an asymmetrical embodiment of the shape shoulder;
FIG.4
the shape shoulder of Figure 3 in front view;
FIG.5
the shape shoulder of Figure 4 in side view;
FIG.6
the form shoulder of Figure 4 in top view;
FIG.7
the form shoulder of Figure 4 in a view from below;
FIG.8
the shape shoulder of Figure 4 in a view from below and in a special embodiment;
FIG.9-11
Cuts through the shape shoulder along the lines IX-IX, XX, XI-XI in Fig.4;
FIG.12
a special embodiment of the shape shoulder;
12A
schematically the front view of a tubular bag machine with four formers arranged in series;
FIG.13
a further and preferred embodiment of the shape shoulder;
FIG.14
a plan view of the shape shoulder of FIG.13;
FIG.15
greatly enlarged a section through the shape shoulder along line XV-XV in FIG. 14;
FIG.16
greatly enlarges a section through the shape shoulder along line XVI-XVI in FIG. 14;
FIG.17
schematically three sections through the channel of the shape shoulder perpendicular to the back wall to illustrate the principle of different approaches of the back wall and the front walls of the shape shoulder;
FIG.18
the one with the shaped shoulder according to FIG. 3 or nFig. 13 formed double hose in side view
Figure 19
a section through the double hose according to Figure 18 along line XVIII-XVIII in FIG.17.

In der nachfolgenden Beschreibung wird der Einfachheit halber statt Formschulter das kürzere Wort Former benutztz.
Fig. 1 zeigt schematisch die Anordnung des Formers 1 in einer nur gestrichelt angedeuteten Verpackungsmaschine, in der mittels des Formers 1 der von einer Rolle R abgezogene Folienstreifen FS in einen Doppelschlauch DS umgewandelt wird. Mit 100 ist ein Längssiegelwerkzeug und mit 101 ein Quersiegelwerkzeug bezeichnet. Form- und Füllrohre 13, die auch in Fig. 10 mit angedeutet sind, durchgreifen den Kanal 2 im Former 1.
In the following description, for the sake of simplicity, the shorter word Former is used instead of the shape shoulder.
1 schematically shows the arrangement of the former 1 in a packaging machine, indicated only by dashed lines, in which the film strip FS drawn off from a roll R is converted into a double tube DS by means of the former 1. 100 is a longitudinal sealing tool and 101 is a transverse sealing tool. Forming and filling pipes 13, which are also indicated in FIG. 10, pass through the channel 2 in the former 1.

Der getaktete Abzug des Folienstreifens FS von der Rolle R wird von den auf und ab beweglichen Quersiegelwerkzeugen 101 bewirkt. Von den Formrohren 13 und den gebogenen Seitenwänden 12 wird ein Durchlaufspalt 20 für die Folie gebildet.The clocked deduction of the film strip FS from the roll R is caused by the up and down movable cross sealing tools 101. From the shaped tubes 13 and the curved side walls 12 a passage gap 20 is formed for the film.

Der Former besteht unter Verweis auf Fig.2 und Fig.3 aus einem blockartigen Formstück 1, in dem sich innen ein oben und unten offener Foliendurchlaufkanal 2 erstreckt. Die Former nach den Fig.2 und Fig.3 unterscheiden sich nur dadurch, daß mit dem Former nach Fig.2 ein symmetrischer Doppelschlauch (siehe Fig. 1A) und mit dem Former nach Fig.3 ein asymmetrischer Doppelschlauch (Fig. 1B) erzeugt wird.The former consists of a reference to Fig.2 and Fig.3 block-like shaped piece 1, in which there is an up and down inside open film flow channel 2 extends. The formers after the Fig.2 and Fig.3 differ only in that with the 2 a symmetrical double hose (see Fig. 1A) and with the former according to Fig. 3 an asymmetrical double hose (Fig. 1B) is generated.

Von der oberen Folieneinlaufkante 3 aus erstreckt sich die Rückwand 4 des Kanales 2 bis zur Auslauföffnung 5 (siehe Fig.7) des Kanales 2. Dieser Kanal 2 ist nach vorn durch zwei Kanalvorderwände 6 begrenzt. Die sich stetig an die Folieneinlaufkante 3 anschließenden Formkanten 7 der Vorderwände 6 definieren einen keilförmigen, in Foliendurchlaufrichtung P (siehe Fig.1) orientierten Ausschnitt 9, der in einem Schlitz 8 übergeht bez. ausläuft. Die Kanalvorderwände 6 sind dabei außenseitig in Form schalkragenartiger, am Schlitz 8 auslaufender Folienführungsflächen 10 ausgebildet, die sich stetig an entsprechende Folienführungsflächen 10' am Hauptkörper des Formers 1 anschließen.The extends from the upper film leading edge 3 Rear wall 4 of the channel 2 up to the outlet opening 5 (see Fig. 7) of channel 2. This channel 2 is forward through two channel front walls 6 limited. The steadily at the film leading edge 3 Define the subsequent shape edges 7 of the front walls 6 a wedge-shaped, in the direction of film P (see Fig.1) oriented section 9, which merges into a slot 8 bez. expires. The channel front walls 6 are on the outside in the form of a shawl collar, which ends at the slot 8 Foil guiding surfaces 10 are formed, which continuously correspond to corresponding Foil guide surfaces 10 'on the main body of the former 1 connect.

Für eine solchen Former ist nach der vorliegenden Erfindung vorgesehen, daß die Rückwand 4 von der Folieneinlaufkante 3 aus und/oder die Innenflächen 11 der Kanalvorderwände 6 in Foliendurchlaufrichtung P und von den Kanalseitenbereichen 12 aus (siehe Fig.6,7) sich zum unteren Ende des Schlitzes 8 hin asymptotisch annähernd ausgeformt sind.For such a former is according to the present invention provided that the rear wall 4 from the film leading edge 3 and / or the inner surfaces 11 of the channel front walls 6 in the film passage direction P and from the channel side regions 12 (see Fig. 6,7) towards the lower end of the slot 8 are approximately formed asymptotically.

Wie einleitend vorerwähnt, bestehen für eine solche Annäherung drei Möglichkeiten, was stark schematisiert in Fig. 17 verdeutlicht ist. Bei der linken Ausführungsform nähern sich die Vorderwände 6 der vertikalen Rüclwand 4 an. Beim mittleren Beispiel nähert sich die Rückwand 4 an die vertikalen Vorderwände 6 an und beim rechten Beispiel, das bevorzugt wird, nähern sich die Rückwand 4 und die Vorderwände 6 gemeinsam aufeinander zu.As mentioned in the introduction, such an approach exists three possibilities, which is illustrated very schematically in FIG. 17 is. In the left embodiment, the front walls approach 6 of the vertical back wall 4. In the middle example the rear wall 4 approaches the vertical front walls 6 on and in the right example, which is preferred, are approaching the rear wall 4 and the front walls 6 together towards each other.

Beim in den Fig. 4 bis 11 dargestellten asymmetrischen Ausführungsbeispiel handelt es sich um eine Ausführungsform, bei der sowohl die Rückwand 4 als auch die Innenflächen 11 der Kanalvorderwände 6 sich gegenseitig bzw. sich einer gedachten, strichpunktiert in Fig.6 angedeuteten, vertikalen Mittelebene E asymptotisch annähern. Diese Annäherung wird dadurch erreicht, daß in der Rückwand 4 (siehe insbesondere Fig.9 bis 11) eine kleine, im Querschnitt trapezförmige Rampe 4' ausgeformt ist. Die Querschnitte dieser Rampe 4' vergrößern sich ausgehend von der Folieneinlaufkante 3 zumehmend. Die Rampe 4' setzt dabei mit einem Bruchteil der Breite B' (siehe Fig.4) der Folieneinlaufkante 3 an dieser an und nimmt stetig an Höhe H und Basisbreite B bis zum Ende des Schlitzes 8 zu. Bezgl. der größer werdenden Querschnitte der Rampe 4' wird auf die Fig.8 bis 11 verwiesen, in denen auch die Höhen und Breiten H, B und B' mit angegeben sind.In the asymmetrical embodiment shown in FIGS. 4 to 11 is an embodiment in which both the rear wall 4 and the inner surfaces 11 of the channel front walls 6 each other or an imaginary one, dash-dotted lines in Fig. 6, vertical center plane E approach asymptotically. This approach is achieved that in the rear wall 4 (see in particular Fig. 9 to 11) one is formed small, trapezoidal cross-section ramp 4 '. The cross sections of this ramp 4 'increase from increasing the film leading edge 3. The ramp 4 'sets with a fraction of the width B '(see Fig.4) of the film leading edge 3 at this and steadily increases in height H and base width B to the end of the slot 8 too. Bezgl. the bigger Cross-sections of the ramp 4 'are shown in FIGS. 8 to 11 referenced in which also the heights and widths H, B and B 'with are specified.

Der Former 1 ist mit seinem Foliendurchlaufkanal 2 und den Kanalvorderwänden 6, wie in den FIG.1,2 dargestellt, aus einem Block gebildet, der bspw. mittels CNC-Fräsen oder mittels Erosionsverfahren entsprechend programmgesteuert und insoweit identisch reproduzierbar herstellbar ist. Um dies zu vereinfachen, ist der Block 7 vorteilhaft durch eine in Durchlaufrichtung P und zur Folieneinlaufkante 3 parallele, vertikale Erstreckungsebene E' (siehe Fig. 8 bis 11) unter Ausbildung separater Kanalvorderwände 6 geteilt ausgebildet. Bezüglich einer solchen Aufteilung wird insbesondere auf Fig. 8 verwiesen.The former 1 is with its film passageway 2 and Channel front walls 6, as shown in FIGS. 1, 2, from one Block formed, for example by means of CNC milling or by means of an erosion process accordingly program-controlled and so far can be produced identically reproducibly. To simplify this is the block 7 advantageous by a in the direction of flow P and 3 parallel to the film leading edge, vertical Extension plane E '(see Fig. 8 to 11) under training separate channel front walls 6 divided. In terms of such a division is referred in particular to FIG. 8.

Die vorerwähnten Herstellungsmethoden, von denen CNC-Fräsen bevorzugt wird, ermöglichen es im übrigen problemlos und vorteilhaft, die beim Durchlauf der Folienbahn von dieser berührten Flächen (Folienführungsflächen 10,10') des Formers mindestens im Auflaufbereich 13 des Blockes 7 mit einer noppen- bzw. waffeleisenartigen Oberflächenstruktur OS zu versehen, die in nur einem Teilbereich in Fig.2 mit angedeutet ist. Für diese Strukturierung genügen Tiefen im zehntel Millimeterbereich, um im ausreichenden Maße Sterilisationsmittel zwischen die Folienführungsflächen 10,10' und den Folienstreifen FS gelangen zu lassen, sofern die Schlauchbeutel unter Sterilbedingungen hergestellt werden müssen, was in der Regel der Fall ist.The aforementioned manufacturing methods, of which CNC milling is preferred, make it possible without problems and advantageously, who touched it when it passed through the film web Areas (film guide surfaces 10, 10 ') of the former at least in the run-up area 13 of the block 7 with a nub or to provide waffle iron-like surface structure OS that is indicated in only a partial area in FIG. For this Structuring is sufficient for depths in the tenths of a millimeter range sufficient sterilizing agent between the film guide surfaces 10,10 'and the film strip FS arrive provided the tubular bag under sterile conditions must be manufactured, which is usually the case.

Da die Anordnung mehrerer Former an Schlauchbeutelmaschinen dieser Art nebeneinander die Regel ist (siehe Fig. 12A), besteht unter Zugrundelegung einer solchen Blockausbildung die vorteilhafte Möglichkeit, die hinteren Blockteile BT solcher Former zu einem großen Block 7' zusammenzufassen, auf den die Kanalvorderwände 6 aufzuschrauben sind, wobei auch für diese, abgesehen von den an den beiden Rändern anzuordnenden, wiederum je zwei Vorderwände 6 zu einer Abdeckung 6' gemäß Fig. 12 zusammengefaßt werden können.Because the arrangement of several formers on tubular bag machines of this type is the rule side by side (see Fig. 12A) on the basis of such a block training the advantageous Possibility of such the rear block parts BT Combine the former into a large block 7 'on which the Channel front walls 6 are to be screwed on, also for these, except for those to be placed on the two edges, again two front walls 6 combined to form a cover 6 'according to FIG. 12 can be.

Unter Bezug auf die Fig. 13 bis 16 besteht eine vorteilhafte und bevorzugte Ausführungsform des Formes nach der vorliegenden Erfindung darin, daß die Folieneinlaufkante 3 in Draufsicht eine in Richtung Foliendurchlaufkanal 2 schwach konvex gewölbte Durchdringungskurve DK ist, die sich aus den Durchdringungen der Fläche der Rückwand 4 und der Folienzulauffläche 3' bildet. Die Folienzulauffläche 3' weist dabei, wie aus der Draufsicht der Fig. 14 ersichtlich, zur Durchdringungskurve DK hin konvergierende und breiter werdende Seitenwandbereiche 14 auf, die aus der Fläche 3' stetig ansteigend in die Folienführungsflächen 10' übergehen, wie dies in den Schnitten XV-XV und XVI-XVI der Fig.15, 16 dargestellt ist. Die vorbeschriebene Rampe 4' ist natürlich auch bei dieser Ausführungsform vorhanden.With reference to FIGS. 13 to 16 there is an advantageous one and preferred embodiment of the mold according to the present Invention in that the film leading edge 3 in plan view a slightly convex in the direction of the film passageway 2 Penetration curve DK is made up of the penetrations the surface of the rear wall 4 and the film inlet surface 3 '. The film inlet surface 3 'has, as from the top view 14, converging towards the penetration curve DK and widening sidewall areas 14 that steadily increasing from the surface 3 'into the film guide surfaces 10 'as shown in sections XV-XV and XVI-XVI 15, 16 is shown. The previously described ramp 4 ' is of course also present in this embodiment.

Durch diese Ausbildung der Folieneinlaufkante 3 in Form einer konvex gewölbten Durchdringungskurve DK gemäβ der vorliegenden Erfindung wird erreicht, daß es bereits in diesem Bereich des Formers 1 zu einer besseren Anpassung des zulaufenden Folienstreifens FS an die Querschnittsform des Foliendurchlaufkanales 4 kommt. Die Randbereiche der zulaufenden Folie werden nämlich dadurch etwas stärker eingezogen, wodurch sich die Folie besser an die stark konkaven Seitenrandwölbungen des Durchlaufkanales 2 anpaßt. Sonst bei gerader Folieneinlaufkante 3 auftretende gewisse Fältelungen werden dadurch vermieden bzw. stark reduziert.This design of the film leading edge 3 in the form of a convex curve penetration curve DK according to the present Invention is achieved that it is already in this area of Formers 1 for a better adjustment of the incoming film strip FS to the cross-sectional shape of the film flow channel 4 is coming. The edge areas of the incoming film are namely this pulls in a little more, which makes the film better to the strongly concave side edge curvatures of the flow channel 2 adapts. Otherwise occurring with a straight film leading edge 3 certain wrinkles are thereby avoided or greatly reduced.

In den Fig.18 ist der Vollständigkeit halber ein Doppelbeutelstrang DS mit seiner Längssiegelnaht LS und seinen Quersiegelnähten QS dargestellt, wie er sich bei einem Former gemäß Fig.3,4 ergibt. Fig. 19 stellt schließlich zwei ungleich breite Beutel dar, die sich nach Trennung längs der gestrichelten Linien T aus dem Strang gemäß Fig.18 ergeben.For the sake of completeness, FIG. 18 is a double bag strand DS with its longitudinal sealing seam LS and its transverse sealing seams QS shows how it works in a former Fig. 3.4 results. 19 finally shows two unequal widths Pouches that appear after separation along the dashed line Lines T from the strand according to Fig. 18 result.

Claims (9)

Formschulter zur Herstellung von Dreiseiten-Siegelrand-Schlauchbeuteln, bestehend aus einem Formstück (1), in dem sich innen ein oben und unten offener, von Form und/oder Füllrohren (13) durchgriffener Foliendurchlaufkanal(2) erstreckt, von dessen oberer Folieneinlaufkante (3) aus sich die Rückwand (4) des Kanales (2) bis zur Auslauföffnung (5) des Kanales (2) erstreckt, der nach vorn durch zwei Kanalabdeckungen (6) begrenzt ist, deren sich stetig an die Folieneinlaufkante (3) anschließenden Formkanten (7) einen in einen in Foliendurchlaufrichtung orientierten Schlitz (8) übergehenden keilförmigen Ausschnitt (9) definieren, wobei die Kanalabdeckungen (6) aussenseitig in Form schalkragenartiger, am Schlitz (8) auslaufender Folienleitflächen (10) ausgebildet sind,
dadurch gekennzeichnet, daß die Rückwand (4) von der Folieneinlaufkante (3) aus und/ oder die Innenflächen (11) der Kanalabdeckungen (6) in Foliendurchlaufrichtung und von den Kanalseitenbereichen (12) aus sich zum untere Ende des Schlitzes (8) hin asymptotisch annähernd ausgeformt sind.
Shaped shoulder for the production of three-sided sealed-edge tubular bags, consisting of a shaped piece (1), in which extends a film passage (2) open at the top and bottom and penetrated by the form and / or filling tubes (13), from the upper film inlet edge (3 ) from which the rear wall (4) of the channel (2) extends to the outlet opening (5) of the channel (2), which is bounded at the front by two channel covers (6), the shape edges of which continuously adjoin the film inlet edge (3) ( 7) define a wedge-shaped cutout (9) which merges into a slot (8) oriented in the direction of film passage, the channel covers (6) being formed on the outside in the form of shawl-collar-like film guide surfaces (10) which run out at the slot (8),
characterized in that the rear wall (4) from the film inlet edge (3) and / or the inner surfaces (11) of the channel covers (6) in the film passage direction and from the channel side regions (12) towards the lower end of the slot (8) asymptotically are approximately formed.
Formschulter nach Anspruch 1,
dadurch gekennzeichnet, daß in der Rückwand (4) eine im Querschnitt trapezförmige Rampe (4') ausgeformt ist, deren Querschnitte, mit einem O-Querschnitt und einem Bruchteil der Breite der Folieneinlaufkante (3) an dieser ansetzend, sich stetig in Höhe (H) und der Basisbreite (B) bis zum Ende des Schlitzes (8) zumehmend vergrößern.
Form shoulder according to claim 1,
characterized in that a trapezoidal ramp (4 ') is formed in the rear wall (4), the cross-sections of which, with an O cross-section and a fraction of the width of the film leading edge (3), adjoin this, continuously increase in height (H ) and increasing the base width (B) up to the end of the slot (8).
Formschulter nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die Folieneinlaufkante (3) in Draufsicht eine in Richtung Foliendurchlaufkanal (2) schwach konvex gewölbte Durchdringungskurve (DK) der Fläche der Rückwand (4) und der Folienzulauffläche (3') bildet, welche Folienzulauffläche (3') zur Folieneinlaufkante (3) hin konvergierende und breiter werdende Seitenwandbereiche (14) aufweist, die aus der Fläche (3') stetig ansteigend in die beiden seitlich abfallenden Folienleitflächen (10) übergehen.
Form shoulder according to claim 1 or 2,
characterized in that the film inlet edge (3) forms a penetration curve (DK) of the surface of the rear wall (4) and the film inlet surface (3 ') which is slightly convex in the direction of the film passage channel (2), which film inlet surface (3') to the film inlet edge ( 3) has converging and widening side wall regions (14), which pass from the surface (3 ') to the two laterally falling film guide surfaces (10).
Formschulter nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß der keilförmige Ausschnitt (9) und der Schlitz (8) in Bezug auf die Mitte der Folieneinlaufkante (3) asymmetrisch angeordnet sind.
Shaped shoulder according to one of claims 1 to 3,
characterized in that the wedge-shaped cutout (9) and the slot (8) are arranged asymmetrically with respect to the center of the film leading edge (3).
Formschulter nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß die Formschulter mit ihrem Foliendurchlaufkanal (2) und den Kanalabdeckungen (6) aus einem Block (7) gebildet sind.
Shaped shoulder according to one of claims 1 to 4,
characterized in that the shaped shoulder with its film passage (2) and the channel covers (6) are formed from a block (7).
Formschulter nach Anspruch 5,
dadurch gekennzeichnet, daß der Block (7) durch eine in Durchlaufrichtung und zur Folieneinlaufkante (3) parallele Erstreckungsebene (E') unter Ausbildung separater Kanalabdeckungen (6) geteilt ist.
Form shoulder according to claim 5,
characterized in that the block (7) is divided by an extension plane (E ') parallel in the direction of passage and to the film inlet edge (3) with the formation of separate channel covers (6).
Formschulter nach Anspruch 5 oder 6,
dadurch gekennzeichnet, daß mehrere Unterteile (BT) der Blöcke (7) zu einer Blockzeile (7') zusammengefaßt und auf diesem die separaten Kanalabdekkungen (6) angeordnet sind.
Form shoulder according to claim 5 or 6,
characterized in that a plurality of lower parts (BT) of the blocks (7) are combined to form a block line (7 ') and the separate duct covers (6) are arranged thereon.
Formschulter nach Anspruch 7,
dadurch gekennzeichnet, daß bis auf die beiden äußeren Kanalabdeckungen (6) die anderen Kanalabdeckungen paarweise zu jeweils einer Kanalabdeckung (6') zusammengefaßt sind.
Form shoulder according to claim 7,
characterized in that, apart from the two outer channel covers (6), the other channel covers are combined in pairs to form a channel cover (6 ').
Formschulter nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet, daß die beim Durchlauf der Folienbahn von dieser berührten Flächen der Formschulter mindestens im Auflaufbereich (13) des Blockes (7) mit einer noppenartigen Oberflächenstruktur (OS) versehen sind.
Shaped shoulder according to one of claims 1 to 8,
characterized in that the surfaces of the shaped shoulder which are touched by the film web as it passes through are provided with a nub-like surface structure (OS) at least in the run-up area (13) of the block (7).
EP03003636A 2002-03-02 2003-02-18 Forming shoulder for manufacturing three-side-sealed tubular bags Expired - Lifetime EP1340679B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10209356 2002-03-02
DE2002109356 DE10209356A1 (en) 2002-03-02 2002-03-02 Forming collar for three-sided sealed edge plastic bags has film channel rear wall from inlet edge, and/or inner faces of channel covers in film passage direction and from channel side regions to end of slot, formed asymptotically
DE10217949 2002-04-22
DE10217949A DE10217949A1 (en) 2002-03-02 2002-04-22 Shaped shoulder for the production of three-sided sealed-edge tubular bags

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DE10217949A1 (en) 2003-12-11
EP1340679B1 (en) 2004-12-08
US20030163979A1 (en) 2003-09-04
DE50300185D1 (en) 2005-01-13
US6813871B2 (en) 2004-11-09
USD481744S1 (en) 2003-11-04

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