EP1600399A1 - Plastic bag for bulk material - Google Patents
Plastic bag for bulk material Download PDFInfo
- Publication number
- EP1600399A1 EP1600399A1 EP05008012A EP05008012A EP1600399A1 EP 1600399 A1 EP1600399 A1 EP 1600399A1 EP 05008012 A EP05008012 A EP 05008012A EP 05008012 A EP05008012 A EP 05008012A EP 1600399 A1 EP1600399 A1 EP 1600399A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bag
- vent openings
- vent
- sack according
- moisture
- 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
Links
- 239000004033 plastic Substances 0.000 title claims abstract description 27
- 239000013590 bulk material Substances 0.000 title claims description 8
- 238000013022 venting Methods 0.000 claims abstract description 23
- 239000000126 substance Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 239000002985 plastic film Substances 0.000 claims description 6
- 229920006255 plastic film Polymers 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 2
- 230000008961 swelling Effects 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 239000004745 nonwoven fabric Substances 0.000 claims 1
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
Images
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
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/01—Ventilation or drainage of bags
Definitions
- the invention relates to a bag filled with a bulk material of plastic film according to the preamble of claim 1.
- a powdered bulk material is filled in a plastic bag, it forms after the hermetically closing the bag by segregation of the material-air mixture after a while a bubble in the bag. If such sacks are stacked on top of each other, they can burst relatively easily due to the pressure-loaded air bubbles or tear. In addition, the trapped air affects the stackability on pallets.
- a plastic bag for bulk materials in which a Floor is provided with a row of holes, so that air can escape from the bag.
- the Row of holes is closed by means of a cover sheet, which consists of an air-permeable filter material exists to retain the bulk material in the sack.
- a bag is also known, in whose Production also from a one or more layers existing flat web first a tube is formed.
- the Longitudinal seam arrangement as a double seam of two seams running parallel to each other formed and the inner and the outer plastic layer in the overlap area between The two seams are each provided with perforations that are not with each other aligned so that on the one hand a vent is given and on the other hand not directly Water from the outside through the perforations in the bag interior to enter. That's how it is Although a satisfactory ventilation realized. Against the ingress of moisture from the outside, the bag interior is still not sufficiently secured.
- a comparable one generic state of the art shows the AT 335 898 A.
- the invention has against this background the task of the generic bag such develop further, that on a simple constructive way, on the one hand a good ventilation and on the other hand a good protection against ingress of moisture from the outside is ensured in the bag interior, without the bag in a further step must still be hermetically sealed after venting.
- the bag in the filled state is stackable so that the at least one first vent opening offset in height in the inner plastic layer of the overlap area higher to the at least one second vent opening in the outer plastic layer of the overlap region, being between the vents in the overlap region a vent channel is formed.
- the bag is stackable such that the overlap region at the top of the bag is arranged and extends into the region of the transverse sides, in which the transverse seams lie. It is advantageous if the first vents in the stack layer of the bag at the top and the second vents at least one or preferably arranged on both of the transverse sides with the transverse seams are. In this way, the invention can be structurally particularly easy to implement.
- the second vents in the stack layer are more than 15%, in particular more than 30% of the bag height a lower than the first vents, but at least below the material filling level in the bag.
- the greater the height offset the better it protects against the ingress of moisture.
- a further advantageous possibility for achieving a sealing effect of the venting device can by the Use of moisture-reactive substances can be realized. These are preferred in the channel-like overlap region of the two films in the area of the venting device contribute. Without external moisture, the air can escape escape the bag unhindered. As soon as external influences cause moisture enters the vent, this substance reacts with the water and leads to a sealing of the plastic films, creating a moisture-impermeable Seal is created. This can e.g. by the swelling of this substance, a catalytic Moisture caused by the moisture or the like respectively.
- these moisture-reactive substances substances such as e.g. Gels, fats or other substances with comparable properties can be used by the trapped air can rise under pressure, penetrating from the outside Moisture is effectively rejected.
- substances such as e.g. Gels, fats or other substances with comparable properties can be used by the trapped air can rise under pressure, penetrating from the outside Moisture is effectively rejected.
- a substance is introduced, which closes the vent channel as well as from the inside out pushing air lets through and then as soon as possible reseals, whereby moisture from entering the interior of the bag through the Venting channel is effectively prevented.
- Fig. 1 to 3 show a first embodiment of a filled with a bulk material Packaging container in the form of a bag 1.
- the bag 1 is made of a plastic film 2, which by means of a longitudinal seam arrangement from two mutually preferably parallel longitudinal seams 3, 4 formed into a tube has been.
- the bag therefore has an overlap region 5 of an inner plastic layer 6 and an outer plastic layer 7.
- the two open ends of the plastic tube were each here by means of a or more transverse seams 8, 9 joined together, in particular welded together.
- venting device 10 For venting the interior of the bag after filling with the bulk material and closing of the bag by a mating connection of the material layers is a venting device 10 provided that at least one or more first vent opening (s) 11 in the inner plastic layer 6 of the overlap region 5 and has at least one or more second vent opening (s) 12 in the outer plastic layer 7 of the channel-like overlap region 5 and the venting channel between the vents.
- the vents 11, 12 may, for example designed as perforations, as slots or as punching other geometry be.
- the first and second vent openings 11, 12 are not aligned with each other and the first vent opening (s) 11 in the inner plastic layer 6 in the filled state of the bag have a different height - based on an arrangement in the stackable Location of Fig. 2, wherein the overlap region 5 in this arrangement at the top 13 of the bag is arranged and extends into the region of the transverse sides 14, 15, in which the transverse seams 8, 9 lie - as the second vent opening (s) 12 in the outer Plastic layer 7.
- first vent openings 11 are the first vent openings 11 in the stacking position of the bag shown in Fig. 2 at the top 13 and the second vents 12 here only or substantially at least one or preferably at both of the transverse sides 14, 15 with the Cross stitches 8, 9 arranged.
- the first vents concentrated in the middle of the overlap area between the transverse sides 14, 15 with the transverse seams 8, 9 and extend over less than 50%, especially 30% of the length of the top 13.
- Figs. 4 and 5 and 6 and 7 differ from the embodiments 1 to 3 in that the first (FIGS. 4 and 5) and (not shown) / or the second (Fig. 6 and 7) vents 11, 12 inside and / or outside of labels 16, 17, 18 of a material e.g. from a membrane which obscures a passage of air and moisture from inside the bag outside, but essentially no moisture penetration from outside into the interior of the bag allowed. In this way, the penetration of moisture is even more reliably avoided.
- a material e.g. from a membrane which obscures a passage of air and moisture from inside the bag outside, but essentially no moisture penetration from outside into the interior of the bag allowed. In this way, the penetration of moisture is even more reliably avoided.
- the fleece 19 can also in Overlap region between the longitudinal seams may be arranged and in particular even into the region of the first and / or second vent openings 11, 12th or beyond.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
- Packages (AREA)
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Die Erfindung betrifft einen mit einem Schüttgut befüllbaren Sack aus Kunststofffolie
nach dem Oberbegriff des Anspruchs 1.The invention relates to a bag filled with a bulk material of plastic film
according to the preamble of
Wird ein pulverförmiges Schüttgut in einen Kunststoffsack gefüllt, bildet sich nach dem hermetischen Verschließen des Sackes durch Entmischung des Material-Luft-Gemisches nach einiger Zeit eine Luftblase im Sack aus. Werden derartige Säcke übereinandergestapelt, können sie aufgrund der dabei druckbelasteten Luftblasen relativ leicht platzen oder reißen. Zudem beeinträchtigt die eingeschlossene Luft die Stapelbarkeit auf Paletten.If a powdered bulk material is filled in a plastic bag, it forms after the hermetically closing the bag by segregation of the material-air mixture after a while a bubble in the bag. If such sacks are stacked on top of each other, they can burst relatively easily due to the pressure-loaded air bubbles or tear. In addition, the trapped air affects the stackability on pallets.
Um dieses Problem zu lösen, ist es bekannt, die Säcke mit Entlüftungseinrichtungen zu versehen.To solve this problem, it is known to the bags with venting too Mistake.
So ist aus der DE 31 45 259 A1 ein Kunststoffsack für Schüttgüter bekannt, bei dem ein Boden mit einer Lochreihe versehen ist, damit aus dem Sack Luft entweichen kann. Die Lochreihe ist mittels eines Deckblatts verschlossen, das aus einem luftdurchlässigen Filtermaterial besteht, um das Schüttgut im Sack zurückzuhalten. Derart ist zwar auch nachdem Befüllen des Sackes noch ein Entlüften des Sackes möglich, der Sack ist aber nicht genügend gegen das Eindringen von Feuchtigkeit von außen in den Sack geschützt.Thus, from DE 31 45 259 A1 a plastic bag for bulk materials is known in which a Floor is provided with a row of holes, so that air can escape from the bag. The Row of holes is closed by means of a cover sheet, which consists of an air-permeable filter material exists to retain the bulk material in the sack. Such is indeed after Filling the bag still venting the bag possible, the bag is not sufficiently protected against the ingress of moisture from outside into the bag.
Eine Weiterentwicklung dieses Gedankens zeigt die DE 43 03 894 C2, nach der aus einem aus einer oder mehreren Lagen bestehenden Flachbahn zunächst ein Schlauch geformt wird, der eine feuchtigkeitsdichte, thermoplastische Lage aufweist, die mit einem parallel und im Abstand zu den Längskanten verlaufenden Entlüftungsbereich versehen ist. Im Zuge der Schlauchbildung aus den Flachbahnen bleibt die Längsnaht zunächst zumindest teilweise unverschlossen und der offene Bereich der Längsnaht der thermoplastischen Lage wird mit einem plastifizierbaren Verbindungsmaterial versehen, dessen Schmelzpunkt unterhalb dem der thermoplastischen, feuchtigkeitsdichten Lage liegt. Diese Anordnung hat sich an sich bewährt, sie erfordert aber ein späteres Verschließen des Sackes nach dem Entlüften, um eine genügende Dichtigkeit zu realisieren.A further development of this idea shows the DE 43 03 894 C2, according to the one from one or more layers existing flat web first formed a tube is having a moisture-proof, thermoplastic layer, which with a provided parallel and spaced from the longitudinal edges extending venting area is. In the course of tube formation from the flat webs, the longitudinal seam initially remains at least partially unlocked and the open area of the longitudinal seam of the thermoplastic Location is provided with a plastifiable bonding material whose Melting point is below that of the thermoplastic, moisture-proof layer. These Arrangement has proven itself, but it requires a later closing of the Sackes after venting to realize a sufficient tightness.
Aus der gattungsgemäßen US-PS3302859 ist darüber hinaus ein Sack bekannt, bei dessen Herstellung ebenfalls aus einer aus ein oder mehreren Lagen bestehenden Flachbahn zunächst ein Schlauch geformt wird. Bei der Schlauchbildung aus den Flachbahnen wird die Längsnahtanordnung als doppelte Naht aus zwei parallel zueinander verlaufenden Nähten ausgebildet und die innere und die äußere Kunststofflage im Überlappungsbereich zwischen den beiden Nähten werden jeweils mit Perforationen versehen, die nicht miteinander fluchten, so dass einerseits eine Entlüftung gegeben ist und andererseits nicht direkt Wasser von außen durch die Perforationen in das Sackinnere eintreten soll. Derart wird zwar eine zufriedenstellende Entlüftung realisiert. Gegen das Eindringen von Feuchtigkeit von außen ist das Sackinnere aber immer noch nicht genügend gesichert. Einen vergleichbaren gattungsgemäßen Stand der Technik zeigt die AT 335 898 A.From the generic US-PS3302859 a bag is also known, in whose Production also from a one or more layers existing flat web first a tube is formed. In the hose formation from the flat webs is the Longitudinal seam arrangement as a double seam of two seams running parallel to each other formed and the inner and the outer plastic layer in the overlap area between The two seams are each provided with perforations that are not with each other aligned so that on the one hand a vent is given and on the other hand not directly Water from the outside through the perforations in the bag interior to enter. That's how it is Although a satisfactory ventilation realized. Against the ingress of moisture from the outside, the bag interior is still not sufficiently secured. A comparable one generic state of the art shows the AT 335 898 A.
Die Erfindung hat vor diesem Hintergrund die Aufgabe, den gattungsgemäßen Sack derart weiterzuentwickeln, dass auf einfache konstruktive Weise einerseits eine gute Entlüftung und andererseits ein guter Schutz gegen ein Eindringen von Feuchtigkeit von außen in das Sackinnere gewährleistet wird, ohne dass der Sack in einem weiteren Arbeitsschritt nach dem Entlüften noch hermetisch verschlossen werden muss.The invention has against this background the task of the generic bag such develop further, that on a simple constructive way, on the one hand a good ventilation and on the other hand a good protection against ingress of moisture from the outside is ensured in the bag interior, without the bag in a further step must still be hermetically sealed after venting.
Die Erfindung löst diese Aufgabe durch den Gegenstand des Anspruchs 1.The invention solves this problem by the subject matter of
Danach ist der Sack im befüllten Zustand so stapelbar, dass die wenigstens eine erste Entlüftungsöffnung in der inneren Kunststofflage des Überlappungsbereiches höhenversetzt höher zu der wenigstens einen zweiten Entlüftungsöffnung in der äußeren Kunststofflage des Überlappungsbereichs liegt, wobei zwischen den Entlüftungsöffnungen im Überlappungsbereich ein Entlüftungskanal ausgebildet wird.Thereafter, the bag in the filled state is stackable so that the at least one first vent opening offset in height in the inner plastic layer of the overlap area higher to the at least one second vent opening in the outer plastic layer of the overlap region, being between the vents in the overlap region a vent channel is formed.
Derart kann zwar Luft aus dem befüllten Sack auch noch nach dessen Befüllen und Verschließen entweichen, es ist aber sichergestellt, dass Feuchtigkeit weitestgehend am Eindringen in das Sackinnere gehindert wird, denn diese müsste im gestapelten Zustand der Säcke quasi den Höhenunterschied zwischen diesen Öffnungen überwinden, was so gut wie ausgeschlossen ist.In this way, air can still escape from the filled bag after it has been filled and closed escape, but it is ensured that moisture largely penetrates is prevented in the bag inside, because this would have in the stacked state of Sacks virtually overcome the difference in height between these openings, which is so good as is excluded.
Bevorzugt ist der Sack derart stapelbar, dass der Überlappungsbereich an der Oberseite des Sackes angeordnet ist und sich bis in den Bereich der Querseiten erstreckt, in denen die Quernähte liegen. Hierbei ist es vorteilhaft, wenn die ersten Entlüftungsöffnungen in der Stapellage des Sackes an der Oberseite und die zweiten Entlüftungsöffnungen an wenigstens einer oder bevorzugt an beiden der Querseiten mit den Quernähten angeordnet sind. Auf diese Weise lässt sich die Erfindung konstruktiv besonders einfach realisieren.Preferably, the bag is stackable such that the overlap region at the top of the bag is arranged and extends into the region of the transverse sides, in which the transverse seams lie. It is advantageous if the first vents in the stack layer of the bag at the top and the second vents at least one or preferably arranged on both of the transverse sides with the transverse seams are. In this way, the invention can be structurally particularly easy to implement.
Besonders bevorzugt liegen die zweiten Entlüftungsöffnungen in der Stapellage um mehr als 15%, insbesondere mehr als 30 % der Sackhöhe a tiefer als die ersten Entlüftungsöffnungen, mindestens jedoch unterhalb des Materialfüllspiegels im Sack. Je größer der Höhenversatz ist, desto besser schützt er gegen das Eindringen von Feuchtigkeit. Vorteilhaft ist es insbesondere, wenn die zweiten Entlüftungsöffnungen in der Nähe der Quernähte oder an diesen angeordnet sind, damit der Höhenversatz zu den ersten Entlüftungsöffnungen so groß wie möglich ist.Particularly preferably, the second vents in the stack layer are more than 15%, in particular more than 30% of the bag height a lower than the first vents, but at least below the material filling level in the bag. The greater the height offset the better it protects against the ingress of moisture. Advantageous In particular, it is when the second vents near the transverse seams or are arranged on this, so that the height offset to the first vents as big as possible.
Eine weitere vorteilhafte Möglichkeit zur Erzielung einer Dichtwirkung der Entlüftungseinrichtung, die zugleich ein Eindringen von Feuchtigkeit verhindern soll, kann durch das Verwenden von feuchtigkeitsreaktiven Substanzen realisiert werden. Diese sind bevorzugt in den kanalartigen Überlappungsbereich der zwei Folien im Bereich der Entlüftungseinrichtung einzubringen. Ohne Feuchtigkeitseinfluß von außen kann die Luft aus dem Sack ungehindert entweichen. Sobald äußere Einflüsse dazu führen, dass Feuchtigkeit in die Entlüftungseinrichtung eindringt, reagiert diese Substanz mit dem Wasser und führt zu einer Abdichtung der Kunststoffolien, wodurch eine feuchtigkeitsundurchlässige Dichtung entsteht. Dies kann z.B. durch das Aufquellen dieser Substanz, einer katalytisch durch die Feuchtigkeit hervorgerufene Verklebung o.ä. erfolgen.A further advantageous possibility for achieving a sealing effect of the venting device, which should prevent the ingress of moisture at the same time, can by the Use of moisture-reactive substances can be realized. These are preferred in the channel-like overlap region of the two films in the area of the venting device contribute. Without external moisture, the air can escape escape the bag unhindered. As soon as external influences cause moisture enters the vent, this substance reacts with the water and leads to a sealing of the plastic films, creating a moisture-impermeable Seal is created. This can e.g. by the swelling of this substance, a catalytic Moisture caused by the moisture or the like respectively.
Als Variante zu diesen feuchtigkeitsreaktiven Substanzen sind auch Substanzen wie z.B. Gele, Fette oder andere Substanzen mit vergleichbaren Eigenschaften einsetzbar, durch die eingeschlossene Luft unter Druck hindurch steigen kann, von außen eindringende Feuchtigkeit jedoch wirkungsvoll abgewiesen wird. Derart wird in den Bereich der Entlüftungseinrichtung eine Substanz eingebracht ist, die den Entlüftungskanal verschließt sowie von innen herausdrängende Luft hindurchlässt und sich sodann möglichst sofort wieder verschließt, wodurch Feuchtigkeit am Eindringen in das Sackinnere durch den Entlüftungskanal wirksam gehindert wird.As a variant of these moisture-reactive substances, substances such as e.g. Gels, fats or other substances with comparable properties can be used by the trapped air can rise under pressure, penetrating from the outside Moisture is effectively rejected. Such is in the range of the venting device a substance is introduced, which closes the vent channel as well as from the inside out pushing air lets through and then as soon as possible reseals, whereby moisture from entering the interior of the bag through the Venting channel is effectively prevented.
Weitere vorteilhafte Ausgestaltungen sind den übrigen Unteransprüchen zu entnehmen.Further advantageous embodiments can be found in the remaining subclaims.
Nachfolgend wird die Erfindung unter Bezug auf die Zeichnung anhand von Ausführungsbeispielen näher erläutert. Es zeigt:
- Fig. 1
- eine perspektivische Ansicht eines ersten erfindungsgemäßen Sackes;
- Fig. 2
- einen Schnitt durch die Linie A-A der Fig. 1;
- Fig. 3
- einen Schnitt durch die Linie B-B der Fig. 1;
- Fig. 4
- eine perspektivische Ansicht eines zweiten erfindungsgemäßen Sackes;
- Fig. 5
- einen Schnitt durch die Linie B-B der Fig. 4;
- Fig. 6
- eine perspektivische Ansicht eines drittem erfindungsgemäßen Sackes;
- Fig. 7
- einen Schnitt durch die Linie B-B der Fig. 6; und
- Fig. 8
- einen Schnitt durch einen vierten erfindungsgemäßen Sack.
- Fig. 1
- a perspective view of a first bag according to the invention;
- Fig. 2
- a section through the line AA of Fig. 1;
- Fig. 3
- a section through the line BB of Fig. 1;
- Fig. 4
- a perspective view of a second bag according to the invention;
- Fig. 5
- a section through the line BB of Fig. 4;
- Fig. 6
- a perspective view of a third bag according to the invention;
- Fig. 7
- a section through the line BB of Fig. 6; and
- Fig. 8
- a section through a fourth bag according to the invention.
Fig. 1 bis 3 zeigen ein erstes Ausführungsbeispiel eines mit einem Schüttgut gefüllten
Verpackungsbehältnisses in Form eines Sackes 1. Fig. 1 to 3 show a first embodiment of a filled with a bulk material
Packaging container in the form of a
Der Sack 1 ist aus einer Kunststoff-Folie 2 gefertigt, die mittels einer Längsnahtanordnung
aus zwei zueinander bevorzugt parallelen Längsnähten 3, 4 zu einem Schlauch geformt
wurde. Der Sack weist daher einen Überlappungsbereich 5 aus einer inneren Kunststofflage
6 und einer äußeren Kunststofflage 7 auf.The
Alternativ wäre es auch denkbar, auf einen in anderer Weise gefertigten Sack aus Kunststoff abschnittsweise eine zweite Kunststofflage aufzubringen bzw. die mit mehreren Nähten an den Sack anzufügen (nicht dargestellt).Alternatively, it would also be conceivable on a manufactured in another way bag made of plastic to apply a second layer of plastic in sections or with several Stitched to attach to the bag (not shown).
Die beiden offenen Enden des Kunststoffschlauches wurden hier jeweils mittels einer
oder mehrerer Quernähte 8, 9 zusammengefügt, insbesondere zusammengeschweißt.The two open ends of the plastic tube were each here by means of a
or more
Beim Befüllen der Säcke mit Schüttgut bietet es sich an, von einem Endlosschlauch mit
Längsnähten jeweils Stücke vorgegebener Länge abzulängen, sodann oder dabei eine der
Quernähte 8 auszubilden bzw. den Sack in diesem Bereich zu verschließen, daraufhin den
offenen Sack zu befüllen und schließlich das noch verbleibende offene Ende mit der weiteren
Quernaht 9 zu verschließen.When filling the bags with bulk material, it is advisable to use of an endless tube with
Lengthwise cut lengths of predetermined length, then or one of the
Form
Zum Entlüften des Sackinneren nach dem Befüllen mit dem Schüttgut und dem Verschließen
des Sackes durch eine fügende Verbindung der Materiallagen ist eine Entlüftungseinrichtung
10 vorgesehen, die wenigstens eine oder mehrere erste Entlüftungsöffnung(en)
11 in der inneren Kunststofflage 6 des Überlappungsbereiches 5 aufweist sowie
wenigstens eine oder mehrere zweite Entlüftungsöffnung(en) 12 in der äußeren Kunststofflage
7 des kanalartigen Überlappungsbereiches 5 bzw. des Entlüftungskanals zwischen
den Entlüftungsöffnungen. Die Entlüftungsöffnungen 11, 12 können beispielsweise
als Perforationen, als Schlitze oder als Ausstanzungen anderer Geometrie ausgebildet
sein.For venting the interior of the bag after filling with the bulk material and closing
of the bag by a mating connection of the material layers is a
Die ersten und zweiten Entlüftungsöffnungen 11, 12 fluchten nicht miteinander und die
ersten Entlüftungsöffnung(en) 11 in der inneren Kunststofflage 6 im befüllten Zustand
des Sackes eine andere Höhe aufweisen - bezogen auf eine Anordnung in der stapelbaren
Lage der Fig. 2, wobei der Überlappungsbereich 5 in dieser Anordnung an der Oberseite
13 des Sackes angeordnet ist und sich bis in den Bereich der Querseiten 14, 15 erstreckt,
in denen die Quernähte 8, 9 liegen - als die zweiten Entlüftungsöffnung(en) 12 in der äußeren
Kunststofflage 7.The first and
Um diesen Höhenversatz der ersten und zweiten Entlüftungsöffnungen 11, 12 zu realisieren,
sind die ersten Entlüftungsöffnungen 11 in der in Fig. 2 gezeigten Stapellage des Sackes
an der Oberseite 13 und die zweiten Entlüftungsöffnungen 12 hier nur oder im wesentlichen
an wenigstens einer oder bevorzugt an beiden der Querseiten 14, 15 mit den
Quernähten 8, 9 angeordnet. Nach den dargestellten Ausführungsbeispielen liegen die
ersten Entlüftungsöffnungen konzentriert in der Mitte des Überlappungsbereiches zwischen
den Querseiten 14, 15 mit den Quernähten 8, 9 und erstrecken sich über weniger als
50%, insbesondere 30% der Länge der Oberseite 13. Derart wird nicht nur ein Höhenversatz
realisiert, der ein Eindringen verhindert sondern auch gegenüber dem Stand der
Technik eine weit wirkungsvollere labyrinthartige Anordnung geschaffen, welche dem
Eindringen der Feuchtigkeit ebenfalls entgegenwirkt.In order to realize this height offset of the first and
Die Ausgestaltungen der Fig. 4 und 5 sowie 6 und 7 unterscheiden sich von den Ausführungsbeispielen
der Fig. 1 bis 3 dadurch, dass die ersten (Fig. 4 und 5) und (nicht dargestellt)
/oder die zweiten (Fig. 6 und 7) Entlüftungsöffnungen 11, 12 innen und/oder außen
von Labeln bzw. Deckblättern 16, 17, 18 aus einem Material z.B. aus einer Membran
verdeckt sind, das einen Durchgang von Luft und Feuchtigkeit aus dem Sackinneren nach
außen, aber im wesentlichen nicht ein Eindringen von Feuchtigkeit von außen ins Sackinnere
erlaubt. Derart wird das Eindringen von Feuchtigkeit noch sicherer vermieden.The embodiments of Figs. 4 and 5 and 6 and 7 differ from the
Ein analoger Effekt ist durch ein Vlies 19 (Figur 8) erzielbar. Das Vlies 19 kann auch im
Überlappungsbereich zwischen den Längsnähten angeordnet sein und sich dabei insbesondere
auch bis in den Bereich der ersten und/oder zweiten Entlüftungsöffnungen 11, 12
oder darüber hinaus erstrecken. An analogous effect can be achieved by a fleece 19 (FIG. 8). The fleece 19 can also in
Overlap region between the longitudinal seams may be arranged and in particular
even into the region of the first and / or
- Sackbag
- 11
- Kunststoff-FoliePlastic film
- 22
- Längsnähtelongitudinal seams
- 3, 43, 4
- Überlappungsbereichoverlap area
- 55
- innere Kunststofflageinner plastic layer
- 66
- äußere Kunststofflageouter plastic layer
- 77
- Quernähtecross stitching
- 8,98.9
- Entlüftungseinrichtungvent
- 1010
- erste Entlüftungsöffnung(en)first vent opening (s)
- 1111
- zweite Entlüftungsöffnung(en)second vent opening (s)
- 1212
- Oberseitetop
- 1313
- Querseitentransverse sides
- 14, 1514, 15
- Labellabel
- 16, 17, 1816, 17, 18
- Vliesfleece
- 1919
Claims (12)
dadurch gekennzeichnet, dass
characterized in that
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004026538 | 2004-05-27 | ||
| DE102004026538A DE102004026538A1 (en) | 2004-05-27 | 2004-05-27 | Bag of plastic film that can be filled with a bulk material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1600399A1 true EP1600399A1 (en) | 2005-11-30 |
| EP1600399B1 EP1600399B1 (en) | 2010-10-13 |
Family
ID=34935066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05008012A Active EP1600399B1 (en) | 2004-05-27 | 2005-04-13 | Plastic bag for bulk material |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1600399B1 (en) |
| AT (1) | ATE484462T1 (en) |
| DE (2) | DE102004026538A1 (en) |
| ES (1) | ES2354075T3 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006004291A1 (en) * | 2006-01-31 | 2007-08-09 | Windmöller & Hölscher Kg | Sack and method for producing the same |
| WO2007115538A1 (en) * | 2006-04-12 | 2007-10-18 | Nordfolien Gmbh | Packaging for bulk materials, especially bag made of plastic film |
| EP2088088A1 (en) * | 2008-02-06 | 2009-08-12 | Bischof+Klein GmbH & Co. KG | Packaging container in bag or pouch form |
| WO2011051739A1 (en) | 2009-10-26 | 2011-05-05 | Mandzsu Zoltan | Improved packaging container with overpressure relief, packing method and system |
| DE102009057245A1 (en) | 2009-12-08 | 2011-06-09 | Haver & Boecker Ohg | Apparatus and method for processing tubular film into bags and filling them with bulk materials |
| DE102009057246A1 (en) | 2009-12-08 | 2011-06-09 | Haver & Boecker Ohg | Sack with membrane |
| NL2006791C2 (en) * | 2011-05-16 | 2012-11-19 | Arodo Bvba | METHOD FOR STACKING POWDER MATERIAL FILLED PLASTIC BAGS. |
| DE202011106245U1 (en) * | 2011-09-30 | 2013-01-07 | Bischof + Klein Gmbh & Co. Kg | Packaging container made of flat film |
| EP2619105A4 (en) * | 2010-09-23 | 2015-08-12 | Bemis Co Inc | Multilayer film with valve and package formed from the film |
| NL2019299B1 (en) * | 2017-07-20 | 2019-02-12 | Oerlemans Packaging B V | Method for manufacturing foil packages from a foil tube, and such a foil tube as well as a foil package obtained from such a foil tube, |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202006019054U1 (en) | 2006-12-18 | 2008-04-30 | Bischof + Klein Gmbh & Co. Kg | Packaging container in bag or sack form |
| DE102008049391A1 (en) * | 2008-09-27 | 2010-04-29 | Nordfolien Gmbh | Packaging for bulk goods |
| WO2018060277A1 (en) * | 2016-09-27 | 2018-04-05 | Windmöller & Hölscher Kg | Plastic bag, in particular ffs bag, and method and device for producing and filling a bag |
| DE102016220428A1 (en) | 2016-09-27 | 2018-03-29 | Windmöller & Hölscher Kg | Valve bag and method and system for producing a valve sack |
| DE102021117166A1 (en) | 2021-07-02 | 2023-01-05 | Haver & Boecker Ohg | Ventilation device and method of manufacture |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3309006A (en) | 1966-02-16 | 1967-03-14 | Bemis Co Inc | Plastic bags |
| EP0144011A2 (en) * | 1983-11-18 | 1985-06-12 | Raackmanns Fabriker A/S | A laminate to be used by the manufacture of packings containing products releasing gases |
| DE4303894A1 (en) * | 1993-02-10 | 1994-08-18 | Haver & Boecker | Packaging means fillable with a bulk material and flat in the empty state, as well as method and apparatus for producing the flat packaging means and deaerating and closing the filled packaging means |
| US5399022A (en) * | 1993-02-25 | 1995-03-21 | Ab Specialty Packaging, Inc. | Venting structure for a multiple ply bag |
| US5553942A (en) * | 1994-03-11 | 1996-09-10 | Robert Bosch Gmbh | Laminate for producing packaging containers |
| EP0768245A1 (en) | 1995-10-13 | 1997-04-16 | Rovema Verpackungsmaschinen GmbH | Bag having at least one ventilation point and method for manufacturing such a bag |
| WO2003076302A1 (en) * | 2002-03-13 | 2003-09-18 | Micvac Ab | Microwaveable vacuum package |
| EP1422163A1 (en) * | 2002-11-22 | 2004-05-26 | Amcor Flexibles Europe A/S | Food package for heating in an oven |
-
2004
- 2004-05-27 DE DE102004026538A patent/DE102004026538A1/en not_active Withdrawn
-
2005
- 2005-04-13 AT AT05008012T patent/ATE484462T1/en active
- 2005-04-13 DE DE502005010372T patent/DE502005010372D1/en active Active
- 2005-04-13 EP EP05008012A patent/EP1600399B1/en active Active
- 2005-04-13 ES ES05008012T patent/ES2354075T3/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3309006A (en) | 1966-02-16 | 1967-03-14 | Bemis Co Inc | Plastic bags |
| EP0144011A2 (en) * | 1983-11-18 | 1985-06-12 | Raackmanns Fabriker A/S | A laminate to be used by the manufacture of packings containing products releasing gases |
| DE4303894A1 (en) * | 1993-02-10 | 1994-08-18 | Haver & Boecker | Packaging means fillable with a bulk material and flat in the empty state, as well as method and apparatus for producing the flat packaging means and deaerating and closing the filled packaging means |
| US5399022A (en) * | 1993-02-25 | 1995-03-21 | Ab Specialty Packaging, Inc. | Venting structure for a multiple ply bag |
| US5553942A (en) * | 1994-03-11 | 1996-09-10 | Robert Bosch Gmbh | Laminate for producing packaging containers |
| EP0768245A1 (en) | 1995-10-13 | 1997-04-16 | Rovema Verpackungsmaschinen GmbH | Bag having at least one ventilation point and method for manufacturing such a bag |
| WO2003076302A1 (en) * | 2002-03-13 | 2003-09-18 | Micvac Ab | Microwaveable vacuum package |
| EP1422163A1 (en) * | 2002-11-22 | 2004-05-26 | Amcor Flexibles Europe A/S | Food package for heating in an oven |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2690030A2 (en) | 2006-01-31 | 2014-01-29 | Windmöller & Hölscher KG | Sack and method for manufacturing the same |
| WO2007087965A1 (en) | 2006-01-31 | 2007-08-09 | Windmöller & Hölscher Kg | Bag and method for producing the same |
| DE102006004291A1 (en) * | 2006-01-31 | 2007-08-09 | Windmöller & Hölscher Kg | Sack and method for producing the same |
| US10118736B2 (en) | 2006-01-31 | 2018-11-06 | Windmoeller & Hoelscher Kg | Bag and method for producing the same |
| EP2690030A3 (en) * | 2006-01-31 | 2014-07-30 | Windmöller & Hölscher KG | Sack and method for manufacturing the same |
| WO2007115538A1 (en) * | 2006-04-12 | 2007-10-18 | Nordfolien Gmbh | Packaging for bulk materials, especially bag made of plastic film |
| EP2088088A1 (en) * | 2008-02-06 | 2009-08-12 | Bischof+Klein GmbH & Co. KG | Packaging container in bag or pouch form |
| WO2011051739A1 (en) | 2009-10-26 | 2011-05-05 | Mandzsu Zoltan | Improved packaging container with overpressure relief, packing method and system |
| EP2332850A1 (en) | 2009-12-08 | 2011-06-15 | Haver & Boecker OHG | Sack with membrane |
| EP2332840A1 (en) | 2009-12-08 | 2011-06-15 | Haver & Boecker oHG | Device and method for machining tubular film into open bags and filling same with bulk goods |
| DE102009057246A1 (en) | 2009-12-08 | 2011-06-09 | Haver & Boecker Ohg | Sack with membrane |
| DE102009057245A1 (en) | 2009-12-08 | 2011-06-09 | Haver & Boecker Ohg | Apparatus and method for processing tubular film into bags and filling them with bulk materials |
| EP2619105A4 (en) * | 2010-09-23 | 2015-08-12 | Bemis Co Inc | Multilayer film with valve and package formed from the film |
| NL2006791C2 (en) * | 2011-05-16 | 2012-11-19 | Arodo Bvba | METHOD FOR STACKING POWDER MATERIAL FILLED PLASTIC BAGS. |
| DE202011106245U1 (en) * | 2011-09-30 | 2013-01-07 | Bischof + Klein Gmbh & Co. Kg | Packaging container made of flat film |
| NL2019299B1 (en) * | 2017-07-20 | 2019-02-12 | Oerlemans Packaging B V | Method for manufacturing foil packages from a foil tube, and such a foil tube as well as a foil package obtained from such a foil tube, |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE484462T1 (en) | 2010-10-15 |
| ES2354075T3 (en) | 2011-03-09 |
| DE102004026538A1 (en) | 2005-12-22 |
| DE502005010372D1 (en) | 2010-11-25 |
| EP1600399B1 (en) | 2010-10-13 |
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