EP0135605A1 - Filling valve for a valve bag - Google Patents

Filling valve for a valve bag Download PDF

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Publication number
EP0135605A1
EP0135605A1 EP83109649A EP83109649A EP0135605A1 EP 0135605 A1 EP0135605 A1 EP 0135605A1 EP 83109649 A EP83109649 A EP 83109649A EP 83109649 A EP83109649 A EP 83109649A EP 0135605 A1 EP0135605 A1 EP 0135605A1
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EP
European Patent Office
Prior art keywords
valve
bag
filling
sheet
rear section
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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.)
Withdrawn
Application number
EP83109649A
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German (de)
French (fr)
Inventor
Heinz Schwerdfeger
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.)
Fischer and Krecke GmbH and Co KG
Original Assignee
Fischer and Krecke GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by Fischer and Krecke GmbH and Co KG filed Critical Fischer and Krecke GmbH and Co KG
Priority to EP83109649A priority Critical patent/EP0135605A1/en
Publication of EP0135605A1 publication Critical patent/EP0135605A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/14—Valve bags, i.e. with valves for filling

Definitions

  • the invention relates to a filling valve for a single-layer or multi-layer paper bag or a valve bag made of plastic film, through which the sack filled with powdery or granular material is filled and which closes the filling opening after the filling process, so that the filling material on free exit is prevented.
  • Valve sacks are known in numerous embodiments: There are paper valve sacks with and without side gussets, for the manufacture of which a tube is first formed from a single or multi-ply open paper web and glued lengthwise and then divided into individual sections with a smooth or staggered dividing line, the ends of which are open on both sides are then closed in a suitable manner, a valve being inserted through which the otherwise closed sack can be filled either when the hose is formed in the open longitudinal seam or when the base is formed in one of the two floors.
  • valve bags are also produced from an open plastic web or one that has already been preformed into a tube.
  • the filling valve has a multiple function. On the one hand, it must enable a quick and safe filling and, on the other hand, after the filling process has ended, the sack must be hermetically sealed so that the filling does not come out, or only in an accepted small amount.
  • valve sack when manufacturing a valve sack, one is usually pre-either in the still open longitudinal seam of the flat web to be folded and glued into a tube, or in one of the two specially shaped bases Folded and / or pre-glued or pre-welded valve inserted and glued or welded, the valve consisting essentially of an expandable valve tube that is longer than the track width with which this valve is glued or welded to the bag, so that the expandable valve tube a certain length is freely movable.
  • valve bag with the valve trunk is pulled onto a filler neck.
  • the filling material is blown into the valve bag through the filler neck, excess air being able to escape without parts of the filling material also escaping at the same time.
  • valves are formed of simply folded valve leaves in part, have partly due to complicated folds, which tubular means are formed with reinforcing cloth and / or are made unststoffbogen in part of more than one paper or K.
  • the valves all have at least one valve tube which can be expanded to form a filling hose and separate air outlet channels from which the excess air blown in during the filling process can escape again. Difficulties with these valves result from the fact that the re-escaping air tears back even if only a very small part of the filling material, so that dusting can hardly be avoided, particularly in the case of powdery filling material.
  • the invention has for its object to provide a valve for valve bags with which an exceptional dust tightness is achieved.
  • the invention is based on the knowledge that a valve can be obtained dust-tight if it can easily nestle against the filler neck in the area of its freely movable valve trunk and is porous so that the return air can pass, but the filling material either due to its granularity or due to a tendency to block does not flow back.
  • a filling valve designed according to the invention is produced from a paper or plastic section forming the main valve trunk, to which a highly supple, porous web material is glued to the area which later faces the inside of the bag. From the sheet glued together in this way and consisting of two different flat web materials, the valve is then formed in a manner known per se by single or multiple folding, gluing and / or welding.
  • the prefabricated valve sheet for the later valve inlet side can be made of a normal sheet of paper, on the side that later faces the inside of the sack, for example, of tissue paper.
  • the side facing the later filler opening is to be made from a normal plastic film, while the part facing the inside of the sack either also from one glued tissue paper, or can consist of a plastic fabric.
  • valve sheet to be formed into the valve hose is expediently cut in steps, so that the valve inlet has a projecting tab from which the rear inlet edge is easier to grasp and the valve is thus easier to open.
  • This opening tab facilitating the opening can also be folded and glued after the end of the filling process via the valve fill opening, so that the valve bag is hermetically closed.
  • valve trunk formed from the porous material strip is advantageously cut open at its lower edge.
  • FIG. 1 shows an initially open two-part valve sheet, a main valve sheet 1 consisting of a closed paper or plastic later being the Input opening of the valve is turned, while an auxiliary valve sheet 2 connected in the glue or adhesive track 6 to the main valve sheet consists of very flexible and movable, porous material. 3 with a fold line is designated, in which, for example, the valve shaped according to FIG. 2 is simply folded. 4 identifies the later filling opening and 5 shows an incision to be advantageously made in the auxiliary valve sheet.
  • FIG. 3 shows a section of a valve bag 10 with a valve according to the invention according to FIGS. 1 and 2 embedded in the longitudinal seam of the bag.
  • FIG. 4 shows a 9-shaped valve, as is used, for example, in European patent application no. 82 108 232.8 is described, which, analogously to the cutout according to FIG. 3, is let into the longitudinal seam of a paper or plastic film valve sack, the projecting tab 7 serving to stabilize the longitudinal seam and thus to increase the strength of the sack.
  • FIG. 5 shows in view a Q-shaped valve, as is also disclosed in European patent application no. 82 108 232.8 is shown, and which here according to the invention is divided into two sections 1 and 2, that is to say divided into double strips, analogously to FIG. 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)

Abstract

The filling valve for a valve bag made of paper or plastic is formed in a tubular shape from a valve sheet subdivided into two portions (1, 2), the front portion (1) of which, forming the filling tube which is closed when the bag (10) is filled, consists of a relatively sturdy, tight web or sheet material, whereas the rear portion (2), which is preferably attached by bonding or welding, consists of a snugly fitting, relatively soft material, such as tissue paper or fine-mesh plastic woven material. It is achieved with the valve according to the invention that the rear freely movable portion of the valve rests snugly on the filling nozzle during filling so that the valve is largely dust-tight, but that, at the same time, air flowing back out of the interior of the bag can escape. <IMAGE>

Description

Die Erfindung betrifft ein Einfüllventil für einen ein-oder mehrlagigen Papiersack oder einen aus Kunststoff-Folie gefertigten Ventilsack, durch das der damit bestückte Sack mit pulverigem oder körnigem Gut gefüllt wird und das nach Ende des Füllvorgangs die Einfüllöffnung sicher verschließt, so daß das Füllgut am freien Austritt gehindert wird.The invention relates to a filling valve for a single-layer or multi-layer paper bag or a valve bag made of plastic film, through which the sack filled with powdery or granular material is filled and which closes the filling opening after the filling process, so that the filling material on free exit is prevented.

Ventilsäcke sind in zahlreichen Ausführungsformen bekannt: Es gibt Papier- Ventilsäcke mit und ohne Seitenfalte, zu deren Herstellung zunächst aus einer ein- oder mehrlagigen offenen Papierbahn ein Schlauch gebildet und längsverklebt wird und dieser anschließend mit einer glatten oder gestaffelten Trennlinie in einzelne Abschnitte unterteilt wird, deren beidseitig offene Enden dann in geeigneter Weise verschlossen werden, wobei entweder bei der Schlauchbildung in die offene Längsnaht oder bei der Bodenbildung in einen der beiden Böden ein Ventil eingelegt wird, durch das der ansonsten geschlossene Sack gefüllt werden kann. In analoger Weise werden auch aus einer offenen oder bereits zu einem Schlauch vorgeformten Kunststoffbahn Ventilsäcke hergestellt.Valve sacks are known in numerous embodiments: There are paper valve sacks with and without side gussets, for the manufacture of which a tube is first formed from a single or multi-ply open paper web and glued lengthwise and then divided into individual sections with a smooth or staggered dividing line, the ends of which are open on both sides are then closed in a suitable manner, a valve being inserted through which the otherwise closed sack can be filled either when the hose is formed in the open longitudinal seam or when the base is formed in one of the two floors. In an analogous manner, valve bags are also produced from an open plastic web or one that has already been preformed into a tube.

Das Einfüllventil hat eine mehrfache Aufgabe zu erfüllen. Es muß zum einen ein schnelles und sicheres Befüllen ermöglichen und muß andererseits nach Ende des Füllvorganges den Sack so hermetisch abschließen, daß das Füllgut nicht, odernur in einer akzeptiert geringen Menge austritt.The filling valve has a multiple function. On the one hand, it must enable a quick and safe filling and, on the other hand, after the filling process has ended, the sack must be hermetically sealed so that the filling does not come out, or only in an accepted small amount.

Üblicherweise werden heute bei der Herstellung eines Ventilsacks entweder in die noch offene Längsnaht der zu einem Schlauch umzufalzenden und zu verklebenden Flachbahn, oder in einen der beiden speziell zu formenden Böden ein vorgefalztes und/oder vorverleimtes oder vorgeschweißtes Ventil eingelegt und verklebt oder verschweißt, wobei das Ventil im wesentlichen aus einer aufspreizbaren Ventilröhre besteht, die länger ist als die Spurbreite, mit der dieses Ventil mit dem Sack verklebt oder verschweißt ist, so daß die aufspreizbare Ventilröhre auf einer gewissen Länge frei beweglich ist.Today, when manufacturing a valve sack, one is usually pre-either in the still open longitudinal seam of the flat web to be folded and glued into a tube, or in one of the two specially shaped bases Folded and / or pre-glued or pre-welded valve inserted and glued or welded, the valve consisting essentially of an expandable valve tube that is longer than the track width with which this valve is glued or welded to the bag, so that the expandable valve tube a certain length is freely movable.

Zum Füllen wird der Ventilsack mit dem Ventilrüssel auf einen Einfüllstutzen gezogen. Das Füllgut wird durch den Einfüllstutzen in den Ventilsack eingeblasen, wobei überschüssige Luft austreten können muß, ohne daß gleichzeitig auch Teile des Füllgutes wieder austreten.For filling, the valve bag with the valve trunk is pulled onto a filler neck. The filling material is blown into the valve bag through the filler neck, excess air being able to escape without parts of the filling material also escaping at the same time.

Bekannte Ausführungsformen für Einfüllventile sind in der britischen Patentschrift 656 007, den deutschen Patentschriften 1295 807, 1 301 985, der amerikanischen Patentschrift 3 990 626, ferner in der deutschen Patentschrift 1 586 771 und zuletzt in der europäischen Patentanmeldung 82 108 232.8 beschrieben.Known embodiments for filler valves are described in British patent specification 656 007, German patent specifications 1295 807, 1 301 985, American patent specification 3 990 626, furthermore in German patent specification 1 586 771 and most recently in European patent application 82 108 232.8.

Die in den vorgenannten Schriften erwähnten Ventile sind zum Teil aus einfach gefalzten Ventilblättern geformt, weisen zum Teil kompliziertere Falzungen auf, womit röhrenförmige Gebilde mit Verstärkungslappen entstehen und/oder sind zum Teil auch aus mehr als einem Papier-oderKunststoffbogen hergestellt. Die Ventile weisen sämtlich mindestens eine zu einem Einfüllschlauch aufspreizbare Ventilröhre und gesonderte Luftaustrittskanäle auf, aus denen die beim Einfüllvorgang eingeblasene überschüssige Luft wieder austreten kann. Schwierigkeiten ergeben sich bei diesen Ventilen daraus, daß die wiederaustretende Luft einen, wenn auch nur sehr kleinen Teil des Füllguts wieder zurückreißt, so daß insbesondere bei pulverigem Füllgut ein Stauben kaum zu vermeiden ist.Those mentioned in the aforementioned documents valves are formed of simply folded valve leaves in part, have partly due to complicated folds, which tubular means are formed with reinforcing cloth and / or are made unststoffbogen in part of more than one paper or K. The valves all have at least one valve tube which can be expanded to form a filling hose and separate air outlet channels from which the excess air blown in during the filling process can escape again. Difficulties with these valves result from the fact that the re-escaping air tears back even if only a very small part of the filling material, so that dusting can hardly be avoided, particularly in the case of powdery filling material.

Der Erfindung liegt die Aufgabe zugrunde, ein Ventil für Ventilsäcke zu schaffen, mit dem eine außergewöhnliche Staubdichtigkeit erreicht wird.The invention has for its object to provide a valve for valve bags with which an exceptional dust tightness is achieved.

Die erfindungsgemäße Lösung dieser Aufgabe ist im Patentanspruch 1angegeben.The solution to this problem according to the invention is specified in claim 1.

Vorteilhafte Weiterbildungen des Erfindungsgedankens sind den abhängigen Patentansprüchen entnehmbar.Advantageous further developments of the inventive concept can be found in the dependent claims.

Der Erfindung liegt die Erkenntnis zugrunde, daß ein Ventil dann staubdicht zu bekommen ist, wenn es sich im Bereich seines freibeweglichen Ventilrüssel leicht an den Einfüllstutzen anschmiegen kann und porös ist, damit die rückströmende Luft passieren kann, das Füllgut aber entweder aufgrund seiner Körnigkeit oder aufgrund einer Verblockungsneigung nicht mit zurückströmt.The invention is based on the knowledge that a valve can be obtained dust-tight if it can easily nestle against the filler neck in the area of its freely movable valve trunk and is porous so that the return air can pass, but the filling material either due to its granularity or due to a tendency to block does not flow back.

Ein erfindungsgemäß ausgestaltetes Einfüllventil ist aus einem den Hauptventilrüssel bildenden Papier- oder Kunststoffabschnitt hergestellt, dem an seinem später dem Sackinneren zugewendeten Bereich ein hochschmiegsames, poröses Bahnmaterial angeklebt ist. Aus dem solcherart zusammengeklebten, aus zwei verschiedenen Flachbahnmaterialien bestehendem Bogen wird dann durch Ein- oder Mehrfach-Falzen, Verkleben und/oder Verschweißen in an sich bekannter Weise das Ventil geformt.A filling valve designed according to the invention is produced from a paper or plastic section forming the main valve trunk, to which a highly supple, porous web material is glued to the area which later faces the inside of the bag. From the sheet glued together in this way and consisting of two different flat web materials, the valve is then formed in a manner known per se by single or multiple folding, gluing and / or welding.

Für einen Papier-Ventilsack kann das vorgefertigte Ventilblatt zur späteren Ventileingangsseite aus einem normalen Blatt Papier, auf der später dem Sackinneren zugewendeten Seite z.B. aus Tissue-Papier hergestellt sein. Bei einem aus Kunststoff hergestellten Einfüllventil ist die der späteren Einfüllöffnung zugewendete Seite aus einer normalen Kunststoff-Folie herzustellen, während das dem Sackinneren zugewandte Teil entweder ebenfalls aus einem angeklebten Tissue-Papier, oder aus einem Kunststoffgewebe bestehen kann.For a paper valve sack, the prefabricated valve sheet for the later valve inlet side can be made of a normal sheet of paper, on the side that later faces the inside of the sack, for example, of tissue paper. In the case of a filler valve made of plastic, the side facing the later filler opening is to be made from a normal plastic film, while the part facing the inside of the sack either also from one glued tissue paper, or can consist of a plastic fabric.

Damit das Einfüllventil leichter zum Füllvorgang zu öffnen ist, wird zweckmäßigerweise das zum Ventilschlauch zu formende Ventilblatt stufenförmig geschnitten, so daß der Ventileingang eine vorspringende Lasche besitzt, von der aus die rückstehende Einlaßkante leichter zu erfassen und das Ventil damit leichter zu öffnen ist. Diese das öffnen erleichternde vorstehende Lasche kann zudem nach Ende des Füllvorgangs über die Ventileinfüllöffnung umgefalzt und verklebt werden, so daß der Ventilsack hermetisch geschlossen wird.So that the filler valve is easier to open for the filling process, the valve sheet to be formed into the valve hose is expediently cut in steps, so that the valve inlet has a projecting tab from which the rear inlet edge is easier to grasp and the valve is thus easier to open. This opening tab facilitating the opening can also be folded and glued after the end of the filling process via the valve fill opening, so that the valve bag is hermetically closed.

Um die Freibeweglichkeit des porösen Ventilblattstreifens zu erhöhen, wird vorteilhafterweise der sich aus dem porösen Materialstreifen bildende Ventilrüssel an seiner unteren Kante aufgeschnitten.In order to increase the freedom of movement of the porous valve sheet strip, the valve trunk formed from the porous material strip is advantageously cut open at its lower edge.

Beispielsweise Ausführungsformen eines erfindungsgemäßen Einfüllventils sind ohne Beschränkung des Erfindungsgedankens in der Zeichnung dargestellt. Es zeigen:

  • Fig. 1 ein offenes zweiteiliges Ventilblatt aus dem ein erfindungsgemäßes Einfüllventil hergestellt wird;
  • Fig. 2 ein aus dem Ventilblatt gemäß Figur 1 geformtes Einfüllventil;
  • Fig. 3 einen Teilabschnitt eines mit einem erfindungsgemäßen Einfüllventil versehenen Ventilsacks;
  • Fig. 4 und 5 andere mögliche Ausführungsformen von Einfüllventilen mit erfindungsgemäßen Merkmalen.
For example, embodiments of a filler valve according to the invention are shown in the drawing without restricting the inventive concept. Show it:
  • Figure 1 is an open two-part valve sheet from which a filler valve according to the invention is made.
  • 2 shows a filler valve formed from the valve sheet according to FIG. 1;
  • 3 shows a partial section of a valve sack provided with a filling valve according to the invention;
  • 4 and 5 other possible embodiments of filling valves with features according to the invention.

Die Figur 1 zeigt ein zunächst offenes zweiteiliges Ventilblatt, wobei ein aus einem geschlossenen Papier oder Kunststoff bestehendes Hauptventilblatt 1 später der Eingangsöffnung des Ventils zugewendet ist, während ein in der Leim- oder Klebespur 6 mit dem Hauptventilblatt verbundenes Hilfsventilblatt 2 aus sehr schmiegsamen und beweglichen, porösen Material besteht. Mit 3 ist eine Falzlinie bezeichnet, in der z.B. das nach Figur 2 geformte Ventil einfach gefalzt ist. 4 kennzeichnet die spätere Einfüllöffnung und mit 5 ist ein vorteilhafterweise anzubringender Einschnitt in das Hilfsventilblatt dargestellt.FIG. 1 shows an initially open two-part valve sheet, a main valve sheet 1 consisting of a closed paper or plastic later being the Input opening of the valve is turned, while an auxiliary valve sheet 2 connected in the glue or adhesive track 6 to the main valve sheet consists of very flexible and movable, porous material. 3 with a fold line is designated, in which, for example, the valve shaped according to FIG. 2 is simply folded. 4 identifies the later filling opening and 5 shows an incision to be advantageously made in the auxiliary valve sheet.

Figur 3 zeigt ausschnittsweise einen Ventilsack 10 mit einem in die Sack-Längsnaht eingelassenen Ventil erfindungsgemäßer Ausführungsform entsprechend den Figuren 1 und 2.FIG. 3 shows a section of a valve bag 10 with a valve according to the invention according to FIGS. 1 and 2 embedded in the longitudinal seam of the bag.

Figur 4 zeigt ein 9-förmiges Ventil, wie es beispielsweise in der europäischen Patentanmeldung No. 82 108 232.8 beschrieben ist, das analog zu dem Ausschnitt nach Figur 3 in die Längsnaht eines Papier- oder Kunststoff-Folien-Ventilsacks eingelassen wird, wobei die überstehende Lasche 7 zur Stabilisierung der Längsnaht und damit zur Steigerung der Festigkeit des Sackes dient.FIG. 4 shows a 9-shaped valve, as is used, for example, in European patent application no. 82 108 232.8 is described, which, analogously to the cutout according to FIG. 3, is let into the longitudinal seam of a paper or plastic film valve sack, the projecting tab 7 serving to stabilize the longitudinal seam and thus to increase the strength of the sack.

Figur 5 zeigt in Ansicht ein Q-förmig gestaltetes Ventil, wie es in einstreifiger Ausführungsform ebenfalls in der europäischen Patentanmeldung No. 82 108 232.8 dargestellt ist, und das hier erfindungsgemäß in zwei Abschnitte 1 und 2, also doppelstreifig unterteilt, analog zu Figur 1 ausgeführt ist.FIG. 5 shows in view a Q-shaped valve, as is also disclosed in European patent application no. 82 108 232.8 is shown, and which here according to the invention is divided into two sections 1 and 2, that is to say divided into double strips, analogously to FIG. 1.

Claims (6)

1. Ventil für einen vorzugsweise mit Seitenfalten versehenen Ventilsack, das aus einem Ventilblatt schlauchförmig gebildet und vorzugsweise in einer Sacklängs- oder Sackbodennaht angeordnet und verklebt oder verschweißt ist,
dadurch gekennzeichnet, daß das Ventil aus zwei unterschiedlichen Abschnitten besteht, von denen der eine vordere Abschnitt (1) die beim Befüllen des Sacks (10) sich verschließende Ein- . füllröhre bildet und aus einem relativ festen, dichten Bahn- oder Blattmaterial besteht, an den sich zum Sackinneren hin der zweite mit dem ersten verbundene hintere Abschnitt (2) anschließt, der über den gesamten Umfang des Ventils aus einem Streifen aus sehr biegsamem und anschmiegsamem Bahn- oder Blattmaterial besteht.1. Valve for a valve bag, preferably provided with side folds, which is formed from a valve sheet in the form of a tube and is preferably arranged and glued or welded in a bag longitudinal or bag bottom seam,
characterized in that the valve consists of two different sections, one of which is a front section (1) which closes when the bag (10) is filled. Filling tube forms and consists of a relatively strong, dense sheet or sheet material, which is connected to the inside of the sack, the second connected to the first rear portion (2), which over the entire circumference of the valve from a strip of very flexible and pliable sheet - or leaf material. 2. Ventil nach Anspruch 1,
dadurch gekennzeichnet, daß der den hinteren Abschnitt (2) bildende Ventilstreifen aus Tissue-Papier besteht.2. Valve according to claim 1,
characterized in that the valve strip forming the rear section (2) consists of tissue paper. 3. Ventil nach Anspruch 1,
dadurch gekennzeichnet, daß der den hinteren Abschnitt (2) bildende Ventilstreifen aus einem feinmaschigen Kunststoffgewebe besteht.3. Valve according to claim 1,
characterized in that the valve strip forming the rear section (2) consists of a fine-mesh plastic fabric. 4. Ventil nach Anspruch 1,
dadurch gekennzeichnet, daß der den hinteren Abschnitt (2) bildende Ventilstreifen aus einem porösen Kunststoffbahnmaterial besteht.4. Valve according to claim 1,
characterized in that the valve strip forming the rear section (2) consists of a porous plastic sheet material. 5. Ventil nach Anspruch 1,
dadurch gekennzeichnet, daß der den hinteren Abschnitt (2) bildende Ventilstreifen über die Breite des überstehenden Ventilstreifens einen Einschnitt (5) in Längsrichtung des Ventils aufweist.5. Valve according to claim 1,
characterized in that the valve strip forming the rear section (2) has an incision (5) in the longitudinal direction of the valve over the width of the projecting valve strip. 6. Ventil nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß dieses einen über den Ventilumfang nach außen abstehenden einseitigen Verlängerungsansatz (7) aufweist.6. Valve according to one of the preceding claims, characterized in that it has a one-sided extension projection (7) projecting outward beyond the valve circumference.
EP83109649A 1983-09-27 1983-09-27 Filling valve for a valve bag Withdrawn EP0135605A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP83109649A EP0135605A1 (en) 1983-09-27 1983-09-27 Filling valve for a valve bag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83109649A EP0135605A1 (en) 1983-09-27 1983-09-27 Filling valve for a valve bag

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EP0135605A1 true EP0135605A1 (en) 1985-04-03

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3065899A (en) * 1961-01-16 1962-11-27 Chase Bag Company Self-sealing valves for multiwall bags
GB2018721A (en) * 1978-04-14 1979-10-24 Wavin Bv A plastics bag with a filling valve
DE3145259A1 (en) * 1981-11-14 1983-05-26 Nordenia-Kunststoffe Peter Mager Kg, 2841 Steinfeld Sack, preferably made of plastic film, which can be used as a packaging means for bulk materials

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3065899A (en) * 1961-01-16 1962-11-27 Chase Bag Company Self-sealing valves for multiwall bags
GB2018721A (en) * 1978-04-14 1979-10-24 Wavin Bv A plastics bag with a filling valve
DE3145259A1 (en) * 1981-11-14 1983-05-26 Nordenia-Kunststoffe Peter Mager Kg, 2841 Steinfeld Sack, preferably made of plastic film, which can be used as a packaging means for bulk materials

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