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EP0815024B1 - Cross or block bottom valve sack - Google Patents

Cross or block bottom valve sack Download PDF

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Publication number
EP0815024B1
EP0815024B1 EP96909104A EP96909104A EP0815024B1 EP 0815024 B1 EP0815024 B1 EP 0815024B1 EP 96909104 A EP96909104 A EP 96909104A EP 96909104 A EP96909104 A EP 96909104A EP 0815024 B1 EP0815024 B1 EP 0815024B1
Authority
EP
European Patent Office
Prior art keywords
valve
sack
valve tube
slits
separation lines
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.)
Expired - Lifetime
Application number
EP96909104A
Other languages
German (de)
French (fr)
Other versions
EP0815024A1 (en
Inventor
Volker Runge
Rüdiger Rischke
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of EP0815024A1 publication Critical patent/EP0815024A1/en
Application granted granted Critical
Publication of EP0815024B1 publication Critical patent/EP0815024B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D31/142—Valve bags, i.e. with valves for filling the filling port being formed by folding a flap connected to a side, e.g. block bottoms

Definitions

  • the invention relates to a valve bag according to the preamble of the claim 1.
  • Document FR 2 228 004 A discloses such a valve bag.
  • EP 0 357 835 B1 describes a cross or block bottom valve sack made of paper, Plastic film or the like foldable material for in particular dusty or powdery filling known with a filling valve.
  • the filling valve is one its two sack bottoms delimited laterally by bottom side fold lines in the area a corner wedge forming valve.
  • the filling valve has one one end protruding into the inside of the sack via the corner fold forming the valve Valve hose on.
  • the valve hose is in his inside the sack protruding end portion with a cross-sectional constriction that of the in the flat state of the valve hose opposite each other Longitudinal hose edges starts and at the inner end edge of the valve hose ends.
  • the narrowing of the cross-section is between edge-side adhesive connections between the two layers of material of the flat lying valve hose.
  • the Adhesive connection is designed in the form of a triangle, the hypotenuses of Triangles in the valve hose are facing each other and towards the inner end edge of the Valve hose converge.
  • DE-AS 1 115 118 describes a comparable cross or block bottom valve sack, the adhesive bond between the two layers of material of the flat lying valve hose to form the cross-sectional constriction in shape elongated rectangular strip is formed.
  • DE-PS 1 219 384 is a valve sack made of paper or similar material with valve hoses protruding into the inside of the bag.
  • the valve hoses have slits to form fringes or tongues.
  • This Print beats at least three each from single or double layers existing valve hoses at different distances from the bag valve inlet have rows of slots protruding into the sack, the various valve hoses, partly at the valve outlet, partly at the inner end of the Corner are fastened.
  • the formation of the strips or tongues serve the Improvement of the self-closing effect of the valve.
  • the present invention has for its object the known cross or Block bottom valve sack so that avoiding adhesive bonds Part of the filling material is prevented from escaping during a filling process becomes.
  • valve bag according to the invention If the valve bag according to the invention is plugged onto a filler neck of a filling device, a portion of the folded end portion of the Valve hose unfolded.
  • the valve hose forms its end area accordingly the cross section of the filler neck.
  • the section is physically divided by slits or target dividing lines.
  • At the target dividing lines can be a weakening of the material of the valve hose.
  • the Material weakening should be so large that when a filler neck is inserted into the Valve hose through the filler neck of the valve hose along the material weakening tears.
  • Several material weakenings can be formed side by side be so that the valve bag according to the invention also through filler neck different outer contour can be filled, each opening create a suitable size.
  • slots has the advantage that by inserting a filler neck in the valve hose of the filler neck only an unfolding of part of the end section must perform.
  • two Target dividing lines or slots are provided.
  • the distance between the two target dividing lines or slots should be dimensioned so that the between the target dividing lines or slotted section in an inserted into the valve hose Filling spout of a filling device unfolds and surrounds it.
  • end section is essentially one fold line running perpendicular to the predetermined dividing lines or slits.
  • the Target dividing lines or slots preferably end at this fold line.
  • the nominal dividing lines or slots are expediently of equal length. This makes it easier the manufacture of a valve hose.
  • the target separating lines are formed by perforations.
  • the manufacture of perforations is compared to the formation of material weaknesses easier.
  • valve hose be at least partially made of a gas permeable material.
  • the one that arises during the filling process Escape overpressure in the sack through the surface of the valve hose, without the filling material coming out of the inside of the bag.
  • a coating has that can be converted into an adhesive state for a closure of the valve is.
  • the coating can be a plastic coating, which is caused by heating becomes adhesive, whereby an adhesive bond is formed after cooling.
  • valve hose or the valve hose and the sealing sleeve are preferably formed so that this or these is inserted into the valve hose Filling spout tapered towards the inside of the bag.
  • valve bag which consist of paper can. Instead of paper, other materials or those coated with a plastic can also be used Paper.
  • the bottom middle breaking line is provided with the reference number 1 in FIGS. 1 and 2.
  • the two bottom fold lines are each by the dashed lines 2 and 3 clarifies.
  • the two side envelopes bear the reference symbols 4, 5.
  • With the reference numerals 7 and 8 are the opposite corner turns designated.
  • a blank 9 is glued to the corner wrap 7.
  • the cut 9 is essentially rectangular.
  • This material blank 9 is almost arranged symmetrically with respect to the bottom middle break line 1. It ends before Edge of the bottom cover 4 or 5.
  • the material blank 9 forms in folded state of the bottom a closure sleeve 11, as will be explained in more detail later is described.
  • a filling valve 10 in the form of a hose is arranged on the material blank 9.
  • the valve hose 10 protrudes into the bag interior 12.
  • the valve hose 10 has an end portion 13 projecting into the sack interior 12.
  • the end portion 13 is provided with slits and folded over on itself along the fold line 15.
  • a valve bag is shown in which the position of the intermediate Slots 14 resulting section 16 after insertion of a filler neck, which is not shown.
  • FIG. 3 there is a valve hose 10 shown.
  • the valve hose 10 has a lower surface 17 and an upper surface 18, which are connected to one another via the edge surfaces 19, 20.
  • the upper Surface 18 is formed by two overlapping strips 21, 22.
  • the valve hose 10 has an end section 13 folded over the fold line 15. In the Fig. 3 is shown in dashed lines, the end portion 13, if this is not yet the Fold line 15 is folded over on itself.
  • the end section 13 has two slots 14a, 14b.
  • the slots 14a, 14b are of equal length and extend from the End face 23 of the end section 13 up to the fold line 15.
  • the slots 14a, 14b are shown in dash-dotted lines and spaced apart.
  • the slots 14a, 14b are formed in the lower surface 17. In the upper surface 18 of the No end slots 13 are provided.
  • Is in the valve tube 10 in the delimited by the surfaces 17, 18, 19 and 20 Interior 24 introduced a filler neck of a filling device, so the one bumps End of the filler neck on the fold line 15 against the folded section 13.
  • valve hose 10 is a valve hose 10, as described in FIGS. 3 to 5, with a closure sleeve 11 provided.
  • the valve hose 11 protrudes into the closure sleeve 11 in.
  • the surface of the closure sleeve 11 is made of a thermoplastic Plastic coated. The thermoplastic coating leads to a dense Closure of the filling valve when the coating warms up and then is cooled.
  • the end section can have perforations or material weaknesses exhibit.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Basic Packing Technique (AREA)
  • Revetment (AREA)
  • Pens And Brushes (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

The invention concerns a cross or block bottom valve sack, in particular for powdered filler material, with a filler valve (10) incorporated in one of the two sack bottoms of a corner fold (7, 8), the sack bottoms being delimited laterally by lateral bottom fold lines. The filler valve (10) comprises a valve tube (10) which projects into the sack at one end. The end section (13) of the valve tube (10) projecting into the sack is substantially divided spatially in the longitudinal direction of the valve tube (10). When the valve tube (10) lies flat, the spatially divided end section (13) is folded over onto itself along a fold line (15). When a filler pipe is introduced, the valve tube (10) only opens as far as necessary along the divisions and surrounds the filler pipe so closely that no filler material can escape at the sides.

Description

Die Erfindung betrifft einen Ventilsack gemäß dem Oberbegriff des Anspruchs 1. Dokument FR 2 228 004 A offenbart einen derartigen Ventilsack.The invention relates to a valve bag according to the preamble of the claim 1. Document FR 2 228 004 A discloses such a valve bag.

Bei der Befüllung eines Kreuz- oder Klotzbodenventilsackes mit insbesondere staub- oder pulverförmigen Füllgütern unter Verwendung pneumatischer Fülleinrichtungen entstehen Schwierigkeiten dadurch, daß der durch das Ventil sich hindurch erstreckende Füllstutzen einer Fülleinrichtung von dem Ventil nicht in der Weise umschlossen wird, daß kein staubförmiges oder pulverförmiges Material austreten kann. Während des Befüllungsvorganges können hierdurch bedingt unter Umständen größere Mengen des Füllgutes nach außen treten, was insbesondere mit einer starken Staubwolkenentwicklung einhergeht.When filling a cross or block bottom valve bag with dust or in particular powdery filling goods using pneumatic filling devices Difficulties arise in that through the valve extending filler neck of a filling device from the valve not in the manner is enclosed that no dust or powdery material emerge can. Due to this, during the filling process Under certain circumstances, larger amounts of the filling material emerge, which in particular is accompanied by a strong dust cloud development.

Dieses Problem ist bereits erkannt worden und unterschiedliche Lösungsvorschläge sind z. B. durch die EP 0 357 835 B1, DE-AS 1 115 118, DE-PS 1 219 384 bekannt geworden.This problem has already been recognized and different solutions have been proposed are z. B. from EP 0 357 835 B1, DE-AS 1 115 118, DE-PS 1 219 384 known become.

Durch die EP 0 357 835 B1 ist ein Kreuz- oder Klotzbodenventilsack aus Papier, Kunststoffolie oder dergleichen faltbarem Material für insbesondere staubförmiges oder pulverförmiges Füllgut mit einem Füllventil bekannt. Das Füllventil ist einem seiner beiden seitlich von Bodenseitenfalzlinien begrenzten Sackböden im Bereich eines Ventil bildenden Eckeinschlags ausgebildet. Das Füllventil weist einen mit einem Ende über den das Ventil bildenden Eckeinschlag in das Sackinnere hineinragenden Ventilschlauch auf. Der Ventilschlauch ist in seinem in das Sackinnere hineinragenden Endbereich mit einer Querschnittsverengung versehen, die von den im flach liegenden Zustand des Ventilschlauchs einander gegenüberliegenden Schlauchlängskanten ausgeht und an der inneren Endkante des Ventilschlauches endet. Die Querschnittsverengung ist von randseitigen Klebeverbindungen zwischen den beiden Materiallagen des flach liegenden Ventilschlauches gebildet. Die Klebverbindung ist in Form eines Dreiecks ausgebildet, wobei die Hypotenusen der Dreiecke im Ventilschlauch einander zugewandt sind und zur inneren Endkante des Ventilschlauches konvergieren.EP 0 357 835 B1 describes a cross or block bottom valve sack made of paper, Plastic film or the like foldable material for in particular dusty or powdery filling known with a filling valve. The filling valve is one its two sack bottoms delimited laterally by bottom side fold lines in the area a corner wedge forming valve. The filling valve has one one end protruding into the inside of the sack via the corner fold forming the valve Valve hose on. The valve hose is in his inside the sack protruding end portion with a cross-sectional constriction that of the in the flat state of the valve hose opposite each other Longitudinal hose edges starts and at the inner end edge of the valve hose ends. The narrowing of the cross-section is between edge-side adhesive connections between the two layers of material of the flat lying valve hose. The Adhesive connection is designed in the form of a triangle, the hypotenuses of Triangles in the valve hose are facing each other and towards the inner end edge of the Valve hose converge.

Die DE-AS 1 115 118 beschreibt einen vergleichbaren Kreuz- oder Klotzbodenventilsack, wobei die Klebverbindung zwischen den beiden Materiallagen des flach liegenden Ventilschlauches zur Ausbildung der Querschnittsverengung in Form langgestreckter rechteckförmiger Streifen ausgebildet ist.DE-AS 1 115 118 describes a comparable cross or block bottom valve sack, the adhesive bond between the two layers of material of the flat lying valve hose to form the cross-sectional constriction in shape elongated rectangular strip is formed.

Bei der Herstellung solcher Kreuz- oder Klotzbodenventilsäcke ist eine genaue Positionierung der Klebverbindungen von Bedeutung. Ist der Abstand der Klebverbindungen zueinander zu groß, so kann dies zu einem Austritt eines staub- oder pulverförmigen Füllgutes fuhren, da der Einfüllstutzen der Füllvorrichtung nicht eng anliegend von dem Ventilschlauch umgriffen wird. Eine zu enge Ausbildung der Klebverbindungen kann dazu führen, daß beim Einführen des Füllstutzens der Ventilschlauch zerstört wird.In the manufacture of such cross or block bottom valve sacks is an accurate one Positioning of the adhesive connections is important. The distance is the Adhesive connections to each other too large, this can lead to a leakage of a dust or Powdery filling material, because the filler neck of the filling device is not is tightly gripped by the valve hose. Too narrow an education Adhesive connections can lead to the fact that when the filler neck is inserted Valve hose is destroyed.

Durch die DE-PS 1 219 384 ist ein Ventilsack aus Papier oder ähnlichem Material mit in das Sackinnere hinein ragenden Ventilschläuchen bekannt. Die Ventilschläuche weisen Schlitze zur Bildung von Fransen oder Zungen auf. Diese Druckschrift schlägt mindestens drei jeweils aus einfachen oder Doppellagen bestehende Ventilschläuche vor, die in verschiedenen Entfernungen von dem Sackventileingang in das Sackinnere hineinragende Schlitzreihen aufweisen, wobei die verschiedenen Ventilschläuche teils am Ventilausgang, teils am Innenende des Eckeinschlages befestigt sind. Die Ausbildung der Streifen oder Zungen dienen der Verbesserung der selbständigen Schließwirkung des Ventils.DE-PS 1 219 384 is a valve sack made of paper or similar material with valve hoses protruding into the inside of the bag. The valve hoses have slits to form fringes or tongues. This Print beats at least three each from single or double layers existing valve hoses at different distances from the bag valve inlet have rows of slots protruding into the sack, the various valve hoses, partly at the valve outlet, partly at the inner end of the Corner are fastened. The formation of the strips or tongues serve the Improvement of the self-closing effect of the valve.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, den bekannten Kreuz- oder Klotzbodenventilsack so weiterzubilden, daß unter Vermeidung von Klebverbindungen während eines Füllvorganges ein Austritt eines Teils des Füllgutes vermieden wird. The present invention has for its object the known cross or Block bottom valve sack so that avoiding adhesive bonds Part of the filling material is prevented from escaping during a filling process becomes.

Erfindungsgemäß wird diese Aufgabe durch einen Ventilsack mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen sind Gegenstand der Unteransprüche.According to the invention, this object is achieved by a valve bag with the features of Claim 1 solved. Advantageous further developments are the subject of the subclaims.

Wird der erfindungsgemäße Ventilsack auf einen Füllstutzen einer Fülleinrichtung aufgesteckt, so wird durch den Füllstutzen ein Abschnitt des umgefalteten Endbereichs des Ventilschlauches entfaltet. Der Ventilschlauch formt seinen Endbereich entsprechend dem Querschnitt des Füllstutzens aus.If the valve bag according to the invention is plugged onto a filler neck of a filling device, a portion of the folded end portion of the Valve hose unfolded. The valve hose forms its end area accordingly the cross section of the filler neck.

Der Abschnitt ist durch Schlitze oder Solltrennlinien körperlich unterteilt. Bei den Solltrennlinien kann es sich um eine Materialschwächung des Ventilschlauches handeln. Die Materialschwächung sollte so groß sein, daß beim Einführen eines Füllstutzens in den Ventilschlauch durch den Füllstutzen der Ventilschlauch entlang der Materialschwächung reißt. Es können mehrere Materialschwächungen nebeneinander ausgebildet sein, so daR der erfindungsgemäße Ventilsack auch durch Füllstutzen unterschiedlicher Außenkontur befüllt werden kann, die sich jeweils Öffnungen geeigneter Größe schaffen.The section is physically divided by slits or target dividing lines. At the target dividing lines can be a weakening of the material of the valve hose. The Material weakening should be so large that when a filler neck is inserted into the Valve hose through the filler neck of the valve hose along the material weakening tears. Several material weakenings can be formed side by side be so that the valve bag according to the invention also through filler neck different outer contour can be filled, each opening create a suitable size.

Die Ausbildung von Schlitzen hat den Vorteil, daß durch das Einführen eines Füllstutzens in den Ventilschlauch der Füllstutzen nur eine Entfaltung eines Teils des Endabschnittes durchführen muß.The formation of slots has the advantage that by inserting a filler neck in the valve hose of the filler neck only an unfolding of part of the end section must perform.

In einer vorteilhaften Ausgestaltung der Erfindung wird vorgeschlagen, daß zwei Solltrennlinien bzw. Schlitze vorgesehen sind. Der Abstand zwischen den beiden Solltrennlinien bzw. Schlitzen sollte so bemessen sein, daß sich der zwischen den Solltrennlinien bzw. Schlitzen liegende Abschnitt bei einem in den Ventilschlauch eingeführten Füllstutzen einer Füllvorrichtung entfaltet und diesen anliegend umgibt. In an advantageous embodiment of the invention it is proposed that two Target dividing lines or slots are provided. The distance between the two target dividing lines or slots should be dimensioned so that the between the target dividing lines or slotted section in an inserted into the valve hose Filling spout of a filling device unfolds and surrounds it.

Bevorzugt ist eine Ausgestaltung, bei der der Endabschnitt um eine im wesentlichen senkrecht zu den Solltrennlinien bzw. Schlitzen verlaufende Falzlinie umgefaltet ist. Die Solltrennlinien bzw. Schlitze enden vorzugsweise an dieser Falzlinie.An embodiment is preferred in which the end section is essentially one fold line running perpendicular to the predetermined dividing lines or slits. The Target dividing lines or slots preferably end at this fold line.

Zweckmäßigerweise sind die Solltrennlinien bzw. Schlitze gleich lang. Dies erleichtert die Herstellung eines Ventilschlauches.The nominal dividing lines or slots are expediently of equal length. This makes it easier the manufacture of a valve hose.

Gemäß einer weiteren vorteilhaften Ausgestaltung wird vorgeschlagen, daß die Solltrennlinien durch Perforationen gebildet sind. Die Herstellung von Perforationen ist gegenüber der Ausbildung von Materialschwächungen einfacher.According to a further advantageous embodiment, it is proposed that the target separating lines are formed by perforations. The manufacture of perforations is compared to the formation of material weaknesses easier.

Weiterhin wird vorgeschlagen, daß der Ventilschlauch wenigstens teilweise aus einem gasdurchlässigen Material besteht. Hierdurch kann der während des Füllvorgangs entstehende Überdruck im Sack durch die Oberfläche des Ventilschlauches entweichen, ohne daß das Füllgut aus dem Sackinneren heraustreten kann.It is also proposed that the valve hose be at least partially made of a gas permeable material. As a result, the one that arises during the filling process Escape overpressure in the sack through the surface of the valve hose, without the filling material coming out of the inside of the bag.

Es kann zweckmäßig sein, den Außenbereich den Ventilschlauches nach erfolgter Befüllung zu verschließen. Hierzu wird eine im Außenbereich den Ventilschlauches in oder auf diesem angeordnete Verschlußhülse vorgeschlagen, die eine Beschichtung aufweist, die in einen klebefähigen Zustand für einen Verschluß des Ventils überführbar ist. Die Beschichtung kann eine Kunststoffbeschichtung sein, welche durch Erwärmung klebfähig wird, wobei nach Abkühlung eine Klebeverbindung entsteht. It may be expedient to have the outside of the valve hose done To close the filling. For this purpose, one in the outside of the valve hose or proposed on this arranged closure sleeve that a coating has that can be converted into an adhesive state for a closure of the valve is. The coating can be a plastic coating, which is caused by heating becomes adhesive, whereby an adhesive bond is formed after cooling.

Vorzugsweise sind der Ventilschlauch bzw. der Ventilschlauch und die Verschlußhülse so ausgebildet, daß dieser bzw. diese bei einem in den Ventilschlauch eingeführten Füllstutzen zum Sackinneren hin konisch verläuft bzw. verlaufen.The valve hose or the valve hose and the sealing sleeve are preferably formed so that this or these is inserted into the valve hose Filling spout tapered towards the inside of the bag.

Weitere Vorteile und Merkmale der Erfindung werden anhand eines Ausführungsbeispiels erläutert. In der Zeichnung zeigen:

Fig. 1
schematisch einen Sack in der Draufsicht,
Fig. 2
schematisch in der Draufsicht einen Sack mit einem aufgeklappten Abschnitt,
Fig. 3
einen Ventilschlauch,
Fig. 4
den Ventilschlauch nach Fig. 3 mit teilweise entfaltetem Abschnitt,
Fig. 5
den Ventilschlauch nach Fig. 3 mit vollständig entfaltetem Abschnitt und
Fig. 6
einen Ventilschlauch mit einer Abschlußhülse.
Further advantages and features of the invention are explained using an exemplary embodiment. The drawing shows:
Fig. 1
schematically a sack in top view,
Fig. 2
schematically in plan view a sack with an opened section,
Fig. 3
a valve hose,
Fig. 4
3 with the part unfolded,
Fig. 5
3 with the section fully unfolded and
Fig. 6
a valve hose with an end sleeve.

In den Fig. 1 und 2 ist jeweils ein Ventilsack dargestellt, der aus Papier bestehen kann. Statt Papier können auch andere Werkstoffe oder mit einem Kunststoff beschichtetes Papier verwendet werden.1 and 2, a valve bag is shown, which consist of paper can. Instead of paper, other materials or those coated with a plastic can also be used Paper.

Die Bodenmittelbruchlinie ist in den Fig. 1 und 2 mit dem Bezugszeichen 1 versehen. Die beiden Bodenseitenfalzlinien sind jeweils durch die gestrichelten Linien 2 und 3 verdeutlicht. Die beiden Seitenumschläge tragen die Bezugszeichen 4, 5. Mit den Bezugszeichen 7 und 8 sind die jeweils gegenüber liegenden Eckeinschläge bezeichnet. Auf dem Eckeinschlag 7 ist ein Zuschnitt 9 aufgeklebt. Der Zuschnitt 9 ist im wesentlichen rechteckförmig ausgebildet. Dieser Materialzuschnitt 9 ist nahezu symmetrisch bezüglich der Bodenmittelbruchlinie 1 angeordnet. Er endet vor der Kante des Bodenseitenumschlages 4 bzw. 5. Der Materialzuschnitt 9 bildet im gefalteten Zustand des Bodens eine Verschlußhülse 11, wie sie später noch näher beschrieben wird.The bottom middle breaking line is provided with the reference number 1 in FIGS. 1 and 2. The two bottom fold lines are each by the dashed lines 2 and 3 clarifies. The two side envelopes bear the reference symbols 4, 5. With the reference numerals 7 and 8 are the opposite corner turns designated. A blank 9 is glued to the corner wrap 7. The cut 9 is essentially rectangular. This material blank 9 is almost arranged symmetrically with respect to the bottom middle break line 1. It ends before Edge of the bottom cover 4 or 5. The material blank 9 forms in folded state of the bottom a closure sleeve 11, as will be explained in more detail later is described.

Auf dem Materialzuschnitt 9 ist ein Füllventil 10 in Form eines Schlauches angeordnet. Der Ventilschlauch 10 ragt in das Sackinnere 12. Der Ventilschlauch 10 weist einen in das Sackinnere 12 ragenden Endabschnitt 13 auf. Der Endabschnitt 13 ist mit Schlitzen versehen und entlang der Falzlinie 15 auf sich selbst umgefaltet.A filling valve 10 in the form of a hose is arranged on the material blank 9. The valve hose 10 protrudes into the bag interior 12. The valve hose 10 has an end portion 13 projecting into the sack interior 12. The end portion 13 is provided with slits and folded over on itself along the fold line 15.

In der Fig. 2 ist ein Ventilsack dargestellt, bei dem die Lage des Zwischen den Schlitzen 14 entstehenden Abschnittes 16 nach Einführung eines Füllstutzens, welcher nicht dargestellt ist, einnimmt.In Fig. 2, a valve bag is shown in which the position of the intermediate Slots 14 resulting section 16 after insertion of a filler neck, which is not shown.

Wir nehmen nun Bezug auf die Fig. 3 bis 5. In der Fig. 3 ist ein Ventilschlauch 10 dargestellt. Der Ventilschlauch 10 weist eine untere Fläche 17 und eine obere Fläche 18 auf, die über die Randflächen 19, 20 miteinander verbunden sind. Die obere Fläche 18 ist durch zwei sich überlappende Streifen 21, 22 gebildet. Der Ventilschlauch 10 weist einen um die Falzlinie 15 umgefalteten Endabschnitt 13 auf. In der Fig. 3 ist gestrichelt der Endabschnitt 13 dargestellt, wenn dieser noch nicht um die Falzlinie 15 auf sich selbst umgefaltet ist. Der Endabschnitt 13 weist zwei Schlitze 14a, 14b auf. Die Schlitze 14a, 14b sind gleichlang und erstrecken sich von der Stirnseite 23 des Endabschnittes 13 bis zu der Falzlinie 15. Die Schlitze 14a, 14b sind strichpunktiert dargestellt und im Abstand zueinander ausgebildet. Die Schlitze 14a, 14b sind in der unteren Fläche 17 ausgebildet. In der oberen Fläche 18 des Endabschnittes 13 sind keine Schlitze vorgesehen.We now refer to FIGS. 3 to 5. In FIG. 3 there is a valve hose 10 shown. The valve hose 10 has a lower surface 17 and an upper surface 18, which are connected to one another via the edge surfaces 19, 20. The upper Surface 18 is formed by two overlapping strips 21, 22. The valve hose 10 has an end section 13 folded over the fold line 15. In the Fig. 3 is shown in dashed lines, the end portion 13, if this is not yet the Fold line 15 is folded over on itself. The end section 13 has two slots 14a, 14b. The slots 14a, 14b are of equal length and extend from the End face 23 of the end section 13 up to the fold line 15. The slots 14a, 14b are shown in dash-dotted lines and spaced apart. The slots 14a, 14b are formed in the lower surface 17. In the upper surface 18 of the No end slots 13 are provided.

Wird in den Ventilschlauch 10 in den durch die Flächen 17, 18, 19 und 20 begrenzten Innenraum 24 ein Füllstutzen einer Fülleinrichtung eingeführt, so stößt das eine Ende des Füllstutzens an der Falzlinie 15 gegen den umgefalteten Abschnitt 13. Is in the valve tube 10 in the delimited by the surfaces 17, 18, 19 and 20 Interior 24 introduced a filler neck of a filling device, so the one bumps End of the filler neck on the fold line 15 against the folded section 13.

Beim weiteren Einführen des Füllstutzens in den Innenraum 24 wird der zwischen den Schlitzen ausgebildete Abschnitt 16 aufgeklappt. In der Fig. 4 ist eine Position des Abschnittes 16 während des Umklappvorgangs dargestellt. In der Fig. 5 ist der Abschnitt 16 vollständig aufgeklappt. Der übrige Teil des Endabschnittes 13 behält seine Lage bei, biegt sich dabei aber um den Füllstutzen. Der Abstand zwischen den Schlitzen 14a und 14b ist so bemessen, daß die bei der Durchführung des Füllstutzens sich ergebende Öffnung den Füllstutzen eng umschließt, insbesondere unterstützt durch einen eventuell beim Füllen im Sack entstehenden Überdruck.When the filler neck is inserted further into the interior 24, the between the slots formed portion 16 unfolded. 4 is a position of section 16 shown during the folding process. 5 is the Section 16 fully opened. The rest of the end portion 13 retains its position, but bends around the filler neck. The distance between the Slits 14a and 14b are dimensioned so that when performing the filler neck resulting opening tightly encloses the filler neck, in particular supported by any overpressure that may arise when filling the bag.

In der Fig. 6 ist ein Ventilschlauch 10, wie er in den Fig. 3 bis 5 beschrieben ist, mit einer Verschlußhülse 11 versehen. Der Ventilschlauch 11 ragt in die Verschlußhülse 11 hinein. Die Oberfläche der Verschlußhülse 11 ist mit einem thermoplastischen Kunststoff beschichtet. Die thermoplastische Beschichtung führt zu einem dichten Verschluß des Füllventils, wenn die Beschichtung erwärmt und anschließend abgekühlt wird.6 is a valve hose 10, as described in FIGS. 3 to 5, with a closure sleeve 11 provided. The valve hose 11 protrudes into the closure sleeve 11 in. The surface of the closure sleeve 11 is made of a thermoplastic Plastic coated. The thermoplastic coating leads to a dense Closure of the filling valve when the coating warms up and then is cooled.

Statt Schlitzen kann der Endabschnitt Perforationen oder Materialschwächungen aufweisen. Es können auch mehrere Solltrennlinien in Form von Perforation oder dergleichen im Endabschnitt ausgebildet sein. Instead of slits, the end section can have perforations or material weaknesses exhibit. There can also be several target dividing lines in the form of perforation or the like be formed in the end portion.

BezugszeichenlisteReference list

11
BodenmittelbruchlinieBottom centerline
2,32.3
BodenseitenfalzlinieBottom side fold line
4,54.5
BodenseitenumschlägeBottom side envelopes
7,87.8
EckeinschlägeCorners
99
ZuschnittCutting
1010th
VentilschlauchValve hose
1111
AbschlußhülseEnd sleeve
1212th
SackinnenraumSack interior
1313
EndabschnittEnd section
14a,b14a, b
SchlitzeSlits
1515
FalzlinieFold line
1616
Abschnittsection
1717th
untere Flächelower surface
1818th
obere Flächetop surface
19,2019.20
RandflächenMarginal surfaces
21,2221.22
StreifenStripes
2323
StirnseiteFace
2424th
Innenrauminner space

Claims (9)

  1. A valve sack, more particularly for holding powder-form materials, comprising a filling valve with a valve tube (10) which projects at one end into the interior (12) of the sack and of which the end section (13) projecting into the interior (12) of the sack is physically divided substantially longitudinally of the valve tube (12) and, when the valve tube (10) is in the lay-flat position, is folded back on itself along a fold line (15) extending transversely of the physical division, the end section (13) being physically divided by slits (14a,b) or separation lines extending at intervals to one another, characterized in that the valve sack is a cross or block bottom sack, in that the filling valve is incorporated in one of its two sack bottoms of a corner tuck (7,8) laterally delimited by bottom side fold lines (2,3) and in that, when the valve tube (10) is in the lay-flat position, the separation lines or slits (14a,b) are only formed in one (17) of the two surfaces forming the valve tube, the other surface (18) being folded back on itself.
  2. A valve sack as claimed in claim 1, characterized in that two separation lines or slits (14a,b) are provided, the interval between two separation lines or slots (14a,b) being gauged in such a way that the section (16) lying between the separation lines or slits (14a,b) unfolds in the presence of a filling spout of a filling machine introduced into the valve tube (10) and closely surrounds it.
  3. A valve sack as claimed in claim 1 or 2, characterized in that the end section (13) is folded about a fold line (15) extending substantially perpendicularly of the separation lines or slits (14a,b).
  4. A valve sack as claimed in claim 3, characterized in that the separation lines or slits (14a,b) end at the fold line (15).
  5. A valve sack as claimed in any of claims 1 to 4, characterized in that the separation lines or slits (14a,b) are of equal length.
  6. A valve sack as claimed in any of claims 1 to 5, characterized in that the separation lines are formed by perforations.
  7. A valve sack as claimed in any of claims 1 to 6, characterized in that the valve tube (10) consists at least partly of a gas-permeable material.
  8. A valve sack as claimed in any of claims 1 to 7, characterized in that a closure sleeve (11) with a coating convertible into an adhesive state to close the valve is arranged in or on the valve tube (10) in the outer region thereof.
  9. A valve sack as claimed in any of claims 1 to 8, characterized in that, in the presence of a filling spout of a filling machine introduced into the valve tube (10), the valve tube (10) or the valve tube (10) and the closure sleeve (11) taper conically towards the interior of the sack
EP96909104A 1995-03-30 1996-03-21 Cross or block bottom valve sack Expired - Lifetime EP0815024B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19511814A DE19511814A1 (en) 1995-03-30 1995-03-30 Cross or block bottom valve sack
DE19511814 1995-03-30
PCT/EP1996/001217 WO1996030271A1 (en) 1995-03-30 1996-03-21 Cross or block bottom valve sack

Publications (2)

Publication Number Publication Date
EP0815024A1 EP0815024A1 (en) 1998-01-07
EP0815024B1 true EP0815024B1 (en) 1999-02-03

Family

ID=7758242

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96909104A Expired - Lifetime EP0815024B1 (en) 1995-03-30 1996-03-21 Cross or block bottom valve sack

Country Status (6)

Country Link
EP (1) EP0815024B1 (en)
AT (1) ATE176435T1 (en)
DE (2) DE19511814A1 (en)
DK (1) DK0815024T3 (en)
ES (1) ES2128166T3 (en)
WO (1) WO1996030271A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8142077B2 (en) 2008-04-16 2012-03-27 Graphic Packaging International, Inc. Bag structures and methods of assembling the same
DE202015004837U1 (en) * 2015-07-07 2016-10-13 Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh valve bag

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE818327C (en) * 1950-03-26 1951-10-25 Verpackungsbedarf G M B H Use of the stopper to block the valve of valve bags
DE842586C (en) * 1950-09-17 1952-06-30 Verpackungsbedarf G M B H Valve bag made of paper or the like.
DE2006146C3 (en) * 1970-02-11 1979-12-13 Wilhelmstal-Werke Gmbh Papiersackfabriken, 7590 Achern Multi-layer valve bag
FR2228004A1 (en) * 1973-05-02 1974-11-29 Gartemann & Hollmann Gmbh Filling device for double layer sacks - consists of plastic tube whose inner end is folded to form seal
US4391404A (en) * 1981-08-13 1983-07-05 Champion International Corporation Sleeve valve for flexible bags
US4387749A (en) * 1981-09-08 1983-06-14 Champion International Corporation Filler sleeve for use in conjunction with a bag adapted to contain a granular product
FR2628396A1 (en) * 1988-03-10 1989-09-15 Lembacel Sa FLEXIBLE PACKAGING BAG WITH FILLING VALVE

Also Published As

Publication number Publication date
DK0815024T3 (en) 1999-09-20
ES2128166T3 (en) 1999-05-01
DE19511814A1 (en) 1996-10-02
WO1996030271A1 (en) 1996-10-03
ATE176435T1 (en) 1999-02-15
EP0815024A1 (en) 1998-01-07
DE59601262D1 (en) 1999-03-18

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