EP1981768B1 - Bag and method for producing the same - Google Patents
Bag and method for producing the same Download PDFInfo
- Publication number
- EP1981768B1 EP1981768B1 EP07702653.2A EP07702653A EP1981768B1 EP 1981768 B1 EP1981768 B1 EP 1981768B1 EP 07702653 A EP07702653 A EP 07702653A EP 1981768 B1 EP1981768 B1 EP 1981768B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bag
- ventilation
- ventilation duct
- openings
- ventilation openings
- 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.)
- Not-in-force
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000009423 ventilation Methods 0.000 claims description 68
- 238000000034 method Methods 0.000 claims description 9
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 238000013022 venting Methods 0.000 description 26
- 239000003570 air Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 9
- 238000003466 welding Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 2
- 241001295925 Gegenes Species 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
- B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2155/00—Flexible containers made from webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2155/00—Flexible containers made from webs
- B31B2155/003—Flexible containers made from webs starting from tubular webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2160/00—Shape of flexible containers
- B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/74—Auxiliary operations
- B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
- B31B70/84—Forming or attaching means for filling or dispensing contents, e.g. valves or spouts
- B31B70/855—Forming valves integral with the containers
- B31B70/857—Forming valves integral with the containers by deforming the bag, e.g. stretching
Definitions
- the invention relates to a bag according to claim 1 and a bag making method according to claim 18.
- Sacks are known, which are produced and filled according to the so-called FFS (FFS Form Fill and Seal) method. This procedure is used inter alia in the DE 199 204 78 described.
- FFS FFS Form Fill and Seal
- a film tube is unwound from an unwinding device and fed to an FFS machine, in which the film tube is first separated into sacks by transverse cutting welds.
- These bags are detected by suitable gripping devices, filled in a filling station, closed by another cross-welding and thus discharged as filled and sealed bags from the machine.
- bags are usually provided with perforations.
- perforations or perforations of the bag outer wall have the disadvantage that they lead to leakage, in particular of the fine filling material.
- the EP 0 768 254 A1 and EP 1 600 399 A1 which discloses a bag according to the preamble of claim 1, to provide a bag with a vent channel, which is formed of two film layers.
- the one film layer has first vents to the bag interior and the other second vents to the atmosphere.
- the object of the present invention is to propose a bag in which the ratio between ventability and possible loss of filling material is improved in the closed state.
- At least one second venting channel is provided, which is connected to the first channel through second venting openings and which in turn has third venting openings which vent the at least one second venting channel.
- the direct connections of the first venting channel to the atmosphere can often be saved by this measure, without the ventability of the bag falling below the required level.
- the outer film layer may be provided with a less permeable perforation than the first film layer.
- At least one second venting channel is provided in addition to the at least one first venting channel.
- the ordinal numbers first, second and later third vent channel depend on the order in which the air escaping from the interior of the bag flows through the channels on their way into the atmosphere - that is, the outer space.
- the at least one second venting duct generally has at least areas without direct connections to the interior of the bag. In this way, the connections to the interior of the bag are spaced from the vents to the atmosphere along the bag surface, which increases the tightness. Direct connections to the interior of the bag are preferably either no longer present in the at least one second venting channel or limited to the areas in which the axes of the first and second channels intersect. The same applies to the third and further venting channels in relation to the second.
- a venting channel here is an at least partially delimited space.
- vents should be in the crossing region of the two channels either from the first to the second or from the second to the third channel or to the atmosphere. If there are vents from the first to the second channel in or near the crossing area, it is advantageous to space the openings from the second to the third channel or to the atmosphere thereof.
- the gusset area can be used for this purpose.
- connection openings between the bag interior and the at least first ventilation channel are the first ventilation openings
- the connections between the at least one first ventilation channel to the at least second are the second ventilation openings and so on.
- the at least one first ventilation channel runs parallel to the at least one second ventilation channel, it is advantageous that the longitudinal weld seams required for the formation of the two channels are already introduced into double film layers during tube formation.
- the vents connecting the first and the second channel should then be designed as interruptions of this weld.
- Another advantageous possibility is a largely orthogonal arrangement of the first and second channels to each other. It is clear that manufacturing tolerances, but also acute-angled angles between the channel axes are still covered by the word "largely”. It is particularly advantageous to provide channels at a sack end so that a wall or boundary of the relevant channel can already be formed by a final weld. The other wall can then be formed by a transverse weld. Such channels may be first, second or even third venting channels.
- the other bag end can be designed in the same way. In general, symmetrical bag designs should be preferred.
- vents come, as already mentioned, interruptions in separating welds in question. Further advantageous vents are holes that can come through punches and perforations to conditions. Often, micro-perforations will be beneficial.
- microperforation is understood to mean above all those perforations whose diameter is smaller than the average or the smallest particle size of the filling material.
- Filter here means all types of felt-like or stoffartigem material - whether "woven” (woven) or “nonwoven” (non-woven) - understood that on the one hand is permeable to air, but on the other hand dust-like solids can stop.
- a bag according to the invention can advantageously be combined with elements of the FFS method in many ways.
- the ventilation ducts extending along the hose axis are already produced during tube formation on a tube former. If then bags with a second are made largely parallel to the first channel extending second vent channel, it is possible to install the necessary transverse seams on the tube former or on the FFS machine. Since the FFS machine works at least partially intermittently, it is better to form the transverse welds here. This can be done by an advantageous (double) welding tool.
- FIG. 5 shows the section DD FIG. 5 merely showing that the second venting channel 140 is arranged between the top seam 11 and the further transverse weld seam 15.
- FIG. 6 is the cut BB off FIG. 4 which shows the overlap area between the two venting channels 20 and 140.
- the openings 200 could again be indicated only by arrow and reference numerals.
- the reference numeral 210 the bag interior is provided. By the arrow 9, the interruptions of the weld 150 are indicated again. Objects behind the cutting plane were not shown.
- FIG. 7 is the cut CC off FIG. 4 illustrated in which the arrows 260 symbolize the air flows in the second vent channel 140, which come through the air flow through the introduced into the inner boundary wall 40, but not shown here openings 200 to conditions.
- the Arrows 250 symbolize the flow of air from the outlet openings 120 to the atmosphere.
- both ends of a bag can be equipped with the bag ends shown.
- FIG. 8 shows a further embodiment of a bag 29 according to the invention, in which two substantially parallel venting channels 20 and 21 are provided, which are bounded by the longitudinal seams 26, 27 and 28.
- the first vent channel 20 communicates with the interior of the bag via the first vent openings 22 and in turn is vented via the indicated by the rectangle 23 second vent openings 23 in the second vent passage 21.
- This 21 has vents 24 to the atmosphere.
- the bag 29 is formed from a piece of hose and closed by Endabsch spasch spas 22.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
- Making Paper Articles (AREA)
Description
Die Erfindung betrifft einen Sack nach Anspruch 1 und ein Sackherstellverfahren nach Anspruch 18. Es sind Säcke bekannt, die nach dem sogenannten FFS-Verfahren (FFS Form Fill and Seal) hergestellt und befüllt werden. Dieses Verfahren wird unter anderem in der
Es ist jedoch ein oft verfolgtes Ziel der Fachwelt, das Sackinnere zu entlüften und möglichst wenig Luft in dem Sackfüllgut zu belassen. Zu diesem Zweck werden Säcke in der Regel mit Perforationen versehen. Allerdings haben solche Perforationen oder Lochungen der Sackaußenwand den Nachteil, dass sie zum Austritt insbesondere des feinen Füllmaterials führen.However, it is an often-pursued goal of experts to vent the interior of the bag and to leave as little air as possible in the bag filling material. For this purpose, bags are usually provided with perforations. However, such perforations or perforations of the bag outer wall have the disadvantage that they lead to leakage, in particular of the fine filling material.
Aus diesem Grund schlagen die
Diese Aufgabe wird dadurch gelöst, dass zumindest ein zweiter Entlüftungskanal vorgesehen ist, der mit dem ersten Kanal durch zweite Entlüftungsöffnungen verbunden ist und der seinerseits dritte Entlüftungsöffnungen aufweist, die den zumindest einen zweiten Entlüftungskanal entlüften. Ein solcher Sack ist überraschenderweise leicht herstellbar.This object is achieved in that at least one second venting channel is provided, which is connected to the first channel through second venting openings and which in turn has third venting openings which vent the at least one second venting channel. Such a bag is surprisingly easy to produce.
Durch diese Maßnahme können unter anderem oft die unmittelbaren Verbindungen des ersten Entlüftungskanals zur Atmosphäre (Perforation der äußeren Folienlage) eingespart werden, ohne dass die Entlüftbarkeit des Sackes unter das erforderliche Maß sinkt. Alternativ kann die äußere Folienlage mit einer weniger durchlässigen Perforation als die erste Folienlage ausgestattet werden.Among other things, the direct connections of the first venting channel to the atmosphere (perforation of the outer film layer) can often be saved by this measure, without the ventability of the bag falling below the required level. Alternatively, the outer film layer may be provided with a less permeable perforation than the first film layer.
Auch der Entlüftungskanal des erfindungsgemäßen Sackes wird in der Regel durch eine doppelte Folienlage parallel zur Schlauchachse des Sackes gebildet werden. Zu diesem Zweck kann die Doppellage bereits bei der Schlauchbildung gebildet werden. Die Grenzen des zumindest einen ersten Entlüftungskanals werden dann vorteilhafterweise durch Längsschweißungen definiert, die durch geeignete Schweißvorrichtungen bereits im Rahmen der Schlauchbildung eingebracht werden können. Wird der Schlauch aus einer Flachfolie mit Hilfe einer Längsschweißnaht gebildet, so braucht es lediglich eine zweite zu dieser ersten Schweißnaht parallel laufende Naht, um einen solchen Kanal zu definieren. Unter dem Begriff Entlüftungskanal im Sinne der vorliegenden Anmeldung ist jedoch jede Ausprägung von Sackbestandteilen zu verstehen, die zur Führung von Luft vom Sackinneren zu weiteren Entlüftungsöffnungen, die durchaus auch zu einem weiteren Entlüftungskanal führen können, geeignet sind. In der Regel werden solche Entlüftungskanäle eine größere Länge als Breite aufweisen und aus doppelten Folienlagen gebildet sein.Also, the vent channel of the bag according to the invention is usually formed by a double film layer parallel to the tube axis of the bag. For this purpose, the double layer can already be formed during tube formation. The boundaries of the at least one first venting channel are then advantageously defined by longitudinal welding, which can be introduced by suitable welding devices already in the context of tube formation. If the hose is formed from a flat film by means of a longitudinal weld, then only a second seam running parallel to this first weld is needed to define such a channel. The term venting channel in the sense of the present Registration, however, is to be understood as meaning any manifestation of sack components which are suitable for guiding air from the interior of the sack to further vents, which may well also lead to a further venting channel. In general, such venting channels will have a greater length than width and be formed of double film layers.
Nach der Erfindung wird neben dem zumindest einen ersten Entlüftungskanal zumindest ein zweiter Entlüftungskanal vorgesehen. Die Ordnungszahlen erster, zweiter und später dritter Entlüftungskanal richten sich nach der Reihenfolge, in der die aus dem Sackinneren entweichende Luft die Kanäle auf ihrem Weg in die Atmosphäre - das heißt den Außenraum - durchströmt. So weist der zumindest eine zweite Entlüftungskanal in der Regel zumindest Bereiche ohne direkte Verbindungen zum Sackinneren auf. Auf diese Weise werden die Verbindungen zum Sackinneren von den Entlüftungsöffnungen zur Atmosphäre entlang der Sackoberfläche beabstandet, was die Dichtigkeit erhöht. Direkte Verbindungen zum Sackinneren sind in dem zumindest einen zweiten Entlüftungskanal vorzugsweise entweder gar nicht mehr vorhanden oder auf die Bereiche begrenzt, in denen sich die Achsen der ersten und zweiten Kanäle schneiden. Dasselbe gilt für die dritten und weiteren Entlüftungskanäle im Verhältnis zu den zweiten. Ein Entlüftungskanal ist hierbei ein zumindest teilweise abgegrenzter Raum.According to the invention, at least one second venting channel is provided in addition to the at least one first venting channel. The ordinal numbers first, second and later third vent channel depend on the order in which the air escaping from the interior of the bag flows through the channels on their way into the atmosphere - that is, the outer space. Thus, the at least one second venting duct generally has at least areas without direct connections to the interior of the bag. In this way, the connections to the interior of the bag are spaced from the vents to the atmosphere along the bag surface, which increases the tightness. Direct connections to the interior of the bag are preferably either no longer present in the at least one second venting channel or limited to the areas in which the axes of the first and second channels intersect. The same applies to the third and further venting channels in relation to the second. A venting channel here is an at least partially delimited space.
Beispielsweise in dem Fall, in dem zumindest ein erster Entlüftungskanal parallel zur Schlauchachse und der zweite orthogonal zu dieser verläuft, sollten in dem Kreuzungsbereich der beiden Kanäle nur Entlüftungsöffnungen entweder vom ersten zum zweiten oder vom zweiten zum dritten Kanal oder zur Atmosphäre sein. Falls sich in dem Kreuzungsbereich oder in der Nähe desselben Entlüftungsöffnungen vom ersten zum zweiten Kanal befinden, ist es von Vorteil, die Öffnungen vom zweiten zum dritten Kanal oder zur Atmosphäre davon zu beabstanden. Gegebenenfalls kann der Seitenfaltenbereich hierzu genutzt werden. In Bezug auf die Benennung der Entlüftungsöffnungen mit Ordnungszahlen gilt Analoges zu den Entlüftungskanälen:For example, in the case where at least one first vent channel is parallel to the tube axis and the second is orthogonal thereto, only vents should be in the crossing region of the two channels either from the first to the second or from the second to the third channel or to the atmosphere. If there are vents from the first to the second channel in or near the crossing area, it is advantageous to space the openings from the second to the third channel or to the atmosphere thereof. Optionally, the gusset area can be used for this purpose. Regarding the naming of the vents with ordinal numbers is analogous to the venting channels:
Die Verbindungsöffnungen zwischen dem Sackinneren und dem zumindest ersten Entlüftungskanal sind die ersten Entlüftungsöffnungen, die Verbindungen zwischen dem zumindest einen ersten Entlüftungskanal zu dem zumindest zweiten sind die zweiten Entlüftungsöffnungen und so weiter.The connection openings between the bag interior and the at least first ventilation channel are the first ventilation openings, the connections between the at least one first ventilation channel to the at least second are the second ventilation openings and so on.
Wenn der zumindest eine erste Entlüftungskanal parallel zu dem zumindest einen zweiten Entlüftungskanal verläuft, ist es vorteilhaft, dass die zur Bildung der beiden Kanäle benötigten Längsschweißnähte bereits bei der Schlauchbildung in doppelte Folienlagen eingebracht werden. Die den ersten und den zweiten Kanal verbindenden Entlüftungsöffnungen dürften dann als Unterbrechungen dieser Schweißnaht auszugestalten sein.If the at least one first ventilation channel runs parallel to the at least one second ventilation channel, it is advantageous that the longitudinal weld seams required for the formation of the two channels are already introduced into double film layers during tube formation. The vents connecting the first and the second channel should then be designed as interruptions of this weld.
Eine weitere vorteilhafte Möglichkeit ist eine weitgehend orthogonale Anordnung der ersten und zweiten Kanäle zueinander. Es ist klar, dass Fertigungstoleranzen, aber auch spitzwinklige Winkel zwischen den Kanalachsen durch das Wort "weitgehend" noch mit abgedeckt sind. Besonders vorteilhaft ist es, Kanäle an einem Sackende vorzusehen, so dass eine Wandung oder Begrenzung des betreffenden Kanals bereits von einer Endabschweißung gebildet werden kann. Die andere Wandung kann dann von einer Querschweißung gebildet werden. Solche Kanäle können erste, zweite oder gar dritte Entlüftungskanäle sein.Another advantageous possibility is a largely orthogonal arrangement of the first and second channels to each other. It is clear that manufacturing tolerances, but also acute-angled angles between the channel axes are still covered by the word "largely". It is particularly advantageous to provide channels at a sack end so that a wall or boundary of the relevant channel can already be formed by a final weld. The other wall can then be formed by a transverse weld. Such channels may be first, second or even third venting channels.
Das andere Sackende kann in gleicher Weise gestaltet sein. Allgemein dürften symmetrische Sackdesigns zu bevorzugen sein.The other bag end can be designed in the same way. In general, symmetrical bag designs should be preferred.
Für Entlüftungsöffnungen kommen, wie bereits erwähnt, Unterbrechungen in trennenden Schweißnähten in Frage. Weitere vorteilhafte Entlüftungsöffnungen sind Löcher, die durch Stanzungen und Perforationen zu Stande kommen können. Oft werden auch Mikroperforationen von Vorteil sein.For vents come, as already mentioned, interruptions in separating welds in question. Further advantageous vents are holes that can come through punches and perforations to conditions. Often, micro-perforations will be beneficial.
Für die Zwecke der vorliegenden Erfindung werden unter "Mikroperforation" vor allem solche Perforationen verstanden, deren Durchmesser kleiner ist als die mittlere oder die kleinste Korngröße des Befüllungsgutes.For the purposes of the present invention, "microperforation" is understood to mean above all those perforations whose diameter is smaller than the average or the smallest particle size of the filling material.
In Entlüftungsöffnungen können Filter oder Ventile eingebracht werden. Unter Filter werden hierbei alle Arten von filzartigem oder stoffartigem Material - egal ob "woven" (gewebt) oder "nonwoven" (vliesartig) - verstanden, das einerseits luftdurchlässig ist, andererseits aber staubartige Feststoffe aufhalten kann.In vents filters or valves can be introduced. Filter here means all types of felt-like or stoffartigem material - whether "woven" (woven) or "nonwoven" (non-woven) - understood that on the one hand is permeable to air, but on the other hand dust-like solids can stop.
Die Herstellung eines erfindungsgemäßen Sackes lässt sich in vielerlei Weise vorteilhaft mit Elementen des FFS-Verfahrens verbinden. Es hat sich jedoch bei Versuchen als vorteilhaft herausgestellt, dass die sich längs der Schlauchachse erstreckenden Belüftungskanäle bereits bei der Schlauchbildung auf einem Schlauchformer hergestellt werden. Wenn dann Säcke mit einem zweiten weitgehend parallel zum ersten Kanal verlaufenden zweiten Entlüftungskanal hergestellt werden, besteht die Möglichkeit, die dazu notwendigen Quernähte auf dem Schlauchformer oder an der FFS-Maschine anzubringen. Da die FFS-Maschine zumindest teilweise intermittierend arbeitet, ist es besser die Querschweißnähte hier zu bilden. Dies kann durch ein vorteilhaftes (Doppel)Schweißwerkzeug erfolgen.The production of a bag according to the invention can advantageously be combined with elements of the FFS method in many ways. However, it has been found in experiments to be advantageous that the ventilation ducts extending along the hose axis are already produced during tube formation on a tube former. If then bags with a second are made largely parallel to the first channel extending second vent channel, it is possible to install the necessary transverse seams on the tube former or on the FFS machine. Since the FFS machine works at least partially intermittently, it is better to form the transverse welds here. This can be done by an advantageous (double) welding tool.
Weitere Ausführungsbeispiele der Erfindung gehen aus der gegenständlichen Beschreibung und den Ansprüchen hervor.Further embodiments of the invention will become apparent from the description and the claims.
Die einzelnen Figuren zeigen:
- Fig. 1
- Skizze eines
Schlauchstücks 1 - Fig. 2
- Das Ende eines ersten Ausführungsbeispiels eines erfindungsgemäßen Sackes
- Fig. 3
- Den Schnitt A-A aus
Figur 2 - Fig. 4
- Das Ende eines zweiten Ausführungsbeispiels eines erfindungsgemäßen Sackes
- Fig. 5
- Den Schnitt D-D aus
Figur 4 - Fig. 6
- Den Schnitt B-B aus
Figur 4 - Fig. 7
- Den Schnitt C-C aus
Figur 4 - Fig. 8
- Eine Skizze eines Sackes mit zwei parallel laufenden Entlüftungskanälen
- Fig. 9
- Ein drittes Ausführungsbeispiel eines Sackes 29
mit zwei Entlüftungskanälen 21 und 23 - Fig. 10
- Ein viertes Ausführungsbeispiel eines Sackes 29
mit zwei Entlüftungskanälen 21 und 23
-
Fig. 1 zeigtein Schlauchstück 101, aus dem ein erfindungsgemäßer Sack 220 gefertigt werden kann.Das Schlauchstück 101 ist durch die ersteLängsschweißung 60 aus einer Flachfolie gebildet. Durch die ersteLängsschweißung 60 und diezweite Längsschweißung 50 ist der ersteEntlüftungskanal 20 gebildet.Die äußere Begrenzungswand 30 dieses Kanals 20 kann im vorliegenden Beispiel nicht gezeigte Mikroperforationen ausweisen. In diesem Fall besitzt die innere Begrenzungswand (auch innere Folienlage) 40 größere Perforationen als die vorgenannten Mikroperforationen.Der Pfeil 70 deutet an, dass Luft durch die vorgenannten Mikroperforationen austreten kann.Das Sackinnere 210 dient der Aufbewahrung von nicht gezeigtem Füllgut. -
Figur 2 zeigt ein Ende eines erfindungsgemäßen Sackes 220. Wieder ist ein erster Entlüftungskanal durch dieLängsschweißnähte 50 und 60 gebildet. Dieser erster Kanal mündet über dieEntlüftungsöffnungen 90 inden zweiten Entlüftungskanal 140, der durch dieEndabschweißung 110 unddie zusätzliche Querschweißung 150 gebildet wird.Die zusätzliche Abschweißung 150 übernimmt an den Rändern des Sackes auch dieFunktion einer Eckabschweißung 130. Der vorliegende Sack wird vor allem im Bereich der Seitenfalten 80 durch dieNadelung 120, die weit von dem Kreuzungsbereich zwischen erstem 20 und zweitemKanal 140 entfernt ist, gegen die Atmosphäre entlüftet. Die beiden Kanäle werden durch dieEntlüftungsöffnungen 90 und 100 miteinander verbunden. Diese sind durch dieUnterbrechung der Schweißnähte 50 und 150 zustande gekommen. Solche Unterbrechungen können durch entsprechend geformte oder gesteuerte Schweißwerkzeuge und/oder eine entsprechende Lackierung der Folienbestandteile, die eben nicht verschweißt werden sollen, zustande kommen. -
Figur 3 zeigt den Schnitt A-A ausFigur 2 aus der durch diePfeile 160 angegebenen Blickrichtung, wobei Elemente hinter der Schnittebene aus darstellerischen Gründen nicht dargestellt werden konnten. In dieser Schnittdarstellung ist die Wirkung der Unterbrechung der Schweißnaht 50 noch einmal genauer zu sehen. Die Luft strömt dabei entlang desPfeils 170 aus dem Überlappungsbereich der Begrenzungswände 30 und 40 inden zweiten Entlüftungskanal 140 ein.Entlang der Pfeile 170 und 180 gelangt die Luft dann zuden dritten Entlüftungsöffnungen 120, durch sie dann entlang derPfeile 190 in die Atmosphäre austritt. -
Figur 4 zeigt ein Sackende, bei dem lediglich die Entlüftungsöffnungen anders gestaltet sind als bei dem inFigur 2 und3 dargestellten Ausführungsbeispiel, bei dem die Verbindung zwischen dem ersten 20 unddem zweiten Entlüftungskanal 140 von auch als zweite Entlüftungsöffnungen zu bezeichnende Unterbrechungen 90der Schweißnähte 150 und 50 gebildet wird. InFigur 4 gibt es ebenfalls Unterbrechungen in derSchweißnaht 150, die den erstenEntlüftungskanal 20 bis in den Bereich überdem zweiten Entlüftungskanal 140 ausdehnen. Das Folienmaterial in diesem Überlappbereich zwischen den beidenEntlüftungskanälen 20 und 140 ist durch dieÖffnungen 200 durchlöchert, so dass derKanal 20 durch dieseÖffnungen 200 und dieUnterbrechungen 90 der Schweißnaht in den zweitenKanal 140 entlüftet wird (siehe auchFig. 7 ). Die schlussendliche Entlüftung des zweitenKanals 140 zur Atmosphäre erfolgt wieder durch dieNadelung 120.
- Fig. 1
- Sketch of a
hose piece 1 - Fig. 2
- The end of a first embodiment of a bag according to the invention
- Fig. 3
- The cut AA
FIG. 2 - Fig. 4
- The end of a second embodiment of a bag according to the invention
- Fig. 5
- The cut DD off
FIG. 4 - Fig. 6
- The cut BB off
FIG. 4 - Fig. 7
- Cut CC
FIG. 4 - Fig. 8
- A sketch of a bag with two parallel ventilation channels
- Fig. 9
- A third embodiment of a
bag 29 with two 21 and 23ventilation channels - Fig. 10
- A fourth embodiment of a
bag 29 with two 21 and 23ventilation channels
-
Fig. 1 shows a piece oftubing 101 from which abag 220 according to the invention can be made. Thetube piece 101 is formed by the firstlongitudinal weld 60 of a flat film. By the firstlongitudinal weld 60 and the secondlongitudinal weld 50, thefirst vent passage 20 is formed. Theouter boundary wall 30 of thischannel 20 may identify microperforations not shown in the present example. In this case, has the inner boundary wall (also inner film layer) 40th larger perforations than the aforementioned microperforations. Thearrow 70 indicates that air can escape through the aforementioned microperforations. Thebag interior 210 is used for storage of not shown contents. -
FIG. 2 shows an end of abag 220 according to the invention. Again, a first vent channel through the 50 and 60 is formed. This first channel opens via thelongitudinal welds vent openings 90 into thesecond vent channel 140, which is formed by theEndabschweißung 110 and the additionaltransverse weld 150. Theadditional Abschweißung 150 takes over at the edges of the bag and the function of aEckabschweißung 130. The present bag is mainly in thegussets 80 through the needling 120, which is far away from the crossing region between the first 20 andsecond channel 140, against the Atmosphere vented. The two channels are connected by the 90 and 100 together. These are due to the interruption of thevents 50 and 150 come about. Such interruptions can be achieved by appropriately shaped or controlled welding tools and / or a corresponding coating of the film components, which just should not be welded.welds -
FIG. 3 shows the section AAFIG. 2 from the direction indicated by thearrows 160, with elements behind the cutting plane could not be presented for illustrative reasons. In this sectional view, the effect of the interruption of theweld 50 is shown again in more detail. The air flows along thearrow 170 from the overlapping region of the 30 and 40 into theboundary walls second venting channel 140. Along the 170 and 180, the air then passes to thearrows third vents 120, then exits along thearrows 190 into the atmosphere. -
FIG. 4 shows a sack end, in which only the vents are designed differently than in theFIG. 2 and3 illustrated embodiment, in which the connection between the first 20 and thesecond vent passage 140 is formed by also as second vents to be designatedinterruptions 90 of the 150 and 50. Inwelds FIG. 4 There are also breaks in theweld 150, which extend thefirst vent passage 20 into the area above thesecond vent passage 140. The film material in this overlap area between the two 20 and 140 is perforated by thevent channels openings 200, so that thechannel 20 is vented through theseopenings 200 and theinterruptions 90 of the weld in the second channel 140 (see alsoFig. 7 ). The final venting of thesecond channel 140 to atmosphere is again through the needling 120.
Die
In
Mit den gezeigten Sackenden können natürlich auch beide Enden eines Sackes ausgestattet sein.Of course, both ends of a bag can be equipped with the bag ends shown.
Erste Entlüftungsöffnungen Im Sinne der vorliegenden Druckschrift, das heißt Entlüftungsöffnungen, die das Sackinnere 210 und den ersten Entlüftungskanal 20 miteinander verbinden, sind aus darstelierischen Gründen in den Figuren nicht dargestellt. Ebenso wurde darauf verzichtet, eine ebenfalls vorteilhafte Nadelung, Lochung oder Mikroperforation der äußeren Begrenzungswand 30 des ersten Entlüflungskanals darzustellen.First vent openings For the purposes of the present document, that is to say vent openings which connect the
Claims (21)
- Bag (220), which is formed from a tubular film (101) by first transverse weld seams (110, 150), and which bag (220) is provided with at least one first ventilation duct (20) that runs substantially parallel to the axis of the tubular film (101), the inner film layer (40) of which ventilation duct (20) exhibits first ventilation openings for the ventilation of the bag interior (210) into the first ventilation duct (20),
characterized in that
at least one second ventilation duct (140) is provided, which is connected to the first ventilation duct (20) by second ventilation openings (90, 100, 200), and said second ventilation duct (140) for its part has third ventilation openings (120) which ventilate the at least one second ventilation duct (140). - Bag according to Claim 1,
characterized in that
the at least one second ventilation duct (140) extends substantially parallel to the first ventilation duct (20) . - Bag according to Claim 1,
characterized in that
the at least one second ventilation duct (140) extends substantially orthogonally to the first ventilation duct (20). - Bag according to one of the preceding claims,
characterized in that
at least one second ventilation duct (140) is provided on at least one end of the bag and that the end block weld (110) of the bag on that end of the bag delimits the at least one second ventilation duct (140). - Bag according to the preceding claim,
characterized in that
at least one further second ventilation duct (140) is provided on the other end of the bag. - Bag according to either of the two preceding claims,
characterized in that,
in the direction of the width of the bag (x), the ventilation openings (120) which ventilate the at least one second ventilation duct lie outside the region of the ventilation of the bag interior (210) to the first ventilation duct (20). - Bag according to the preceding claim,
characterized by
side gussets (80) and in that, in the direction of the width of the bag (x), the third ventilation openings (120) which ventilate the at least one second ventilation duct (140) lie in the region of the side gussets (80). - Bag according to one of the three preceding claims,
characterized in that
the bag (220) exhibits at least one corner block weld (130) which in the direction of the tubular axis (z), commencing from the bag interior (210), lies in front of the at least one second ventilation duct (140). - Bag according to one of the preceding claims,
characterized in that
the third ventilation openings (120), which ventilate the at least one second ventilation duct (140), connect the ventilation duct (140) to the atmosphere or to a further third ventilation duct which for its part again exhibits ventilation openings (90, 100, 120, 200). - Bag according to one of the preceding claims,
characterized in that
at least part of the ventilation openings (90, 100, 120, 200), which ventilate ventilation ducts (20, 140), interrupt a weld seam (50, 60, 110, 150) . - Bag according to one of the preceding claims,
characterized in that
at least part of the ventilation openings (90, 100, 120, 200), which ventilate ventilation ducts (20, 140) or the bag interior (210), are holes (200) in a film layer (30, 40). - Bag according to one of the preceding claims,
characterized in that
at least part of the ventilation openings (200), which ventilate ventilation ducts (20, 140) or the bag interior (210), are equipped with filters. - Bag according to one of the preceding claims,
characterized in that
a second ventilation duct (21) is provided which extends substantially parallel to the first ventilation duct, wherein the first ventilation duct (20) is connected to the second ventilation duct (21) by second ventilation openings (23). - Bag according to the preceding claim,
characterized in that
at least one of the following groups of ventilation openings (22, 23, 24) is spaced apart from another of the following groups of ventilation openings (22, 23, 24) in the direction of the axis of the bag (z):- the first ventilation openings (22)- the second ventilation openings (23)- the third ventilation openings (24). - Bag according to the preceding claim,
characterized in that
at least the second (23) and/or third ventilation openings (24) are spaced apart from the first ventilation openings (22) in the direction of the axis of the bag (z) in such a manner that a vertical offset (y) between the first ventilation openings (22) and the second (23) and/or third ventilation openings (24) occurs when the bags are stacked. - Bag according to the preceding claim,
characterized in that
at least the second ventilation openings (23) are arranged in such a manner that a vertical offset (y) in relation to the first ventilation openings (22) occurs in stacking. - Bag according to one of the preceding claims,
characterized in that
at least two of the three groups of ventilation openings (22, 23, 24) are spaced apart from one another in such a manner that one of the groups is situated on one end side of the bag and another group on another end side. - Method for producing bags according to one of the preceding claims,
characterized in that- a tube is unwound from an unwinding device and fed to a machine which by means of transverse block welds (110) singularizes the tube into tube sections (10),- said machine fills the bag (220) which is created in the singularizing process- and said machine seals the filled bag by means of a further transverse block weld (110). - Method for producing a bag according to Claim 2 or 13 according to the method according to the preceding claim,
characterized in that
a tube is unwound from the unwinding device, said tube already exhibiting at least two ventilation ducts (20, 140) located beside one another, said ventilation ducts (20, 140) being arranged substantially parallel to the tube axis. - Method for producing a bag according to Claim 3 according to the method according to Claim 18,
characterized in that
a tubular film, which exhibits the first ventilation duct (20), is unwound from an unwinding device and fed to a machine which performs transverse welds (110, 150) preferably prior to filling, at least one second ventilation duct (140) being formed by said transverse welds (110, 150). - Method according to one of the preceding claims,
characterized in that
a tube is unwound which already exhibits at least two ventilation ducts (20, 21) that extend substantially in parallel.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL07702653T PL1981768T3 (en) | 2006-01-31 | 2007-01-02 | Bag and method for producing the same |
EP13186707.9A EP2690030A3 (en) | 2006-01-31 | 2007-01-02 | Sack and method for manufacturing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006004291A DE102006004291A1 (en) | 2006-01-31 | 2006-01-31 | Sack and method for producing the same |
PCT/EP2007/000151 WO2007087965A1 (en) | 2006-01-31 | 2007-01-02 | Bag and method for producing the same |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13186707.9A Division EP2690030A3 (en) | 2006-01-31 | 2007-01-02 | Sack and method for manufacturing the same |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1981768A1 EP1981768A1 (en) | 2008-10-22 |
EP1981768B1 true EP1981768B1 (en) | 2013-10-02 |
Family
ID=37873079
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13186707.9A Withdrawn EP2690030A3 (en) | 2006-01-31 | 2007-01-02 | Sack and method for manufacturing the same |
EP07702653.2A Not-in-force EP1981768B1 (en) | 2006-01-31 | 2007-01-02 | Bag and method for producing the same |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13186707.9A Withdrawn EP2690030A3 (en) | 2006-01-31 | 2007-01-02 | Sack and method for manufacturing the same |
Country Status (6)
Country | Link |
---|---|
US (1) | US10118736B2 (en) |
EP (2) | EP2690030A3 (en) |
DE (1) | DE102006004291A1 (en) |
ES (1) | ES2436769T3 (en) |
PL (1) | PL1981768T3 (en) |
WO (1) | WO2007087965A1 (en) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PT1607339E (en) * | 2004-05-27 | 2008-06-30 | Rkw Ag | Vented plastic bag |
DE102006054404B4 (en) | 2006-11-18 | 2018-08-30 | Zf Friedrichshafen Ag | Planetary gear device with two sun gears with different diameters |
WO2009090674A2 (en) * | 2008-01-17 | 2009-07-23 | Ashok Chaturvedi | Auto venting packages |
EP2179937B1 (en) | 2008-10-27 | 2014-12-10 | Sachsa Verpackung GmbH | Packing sack for packing items |
DE102009036556A1 (en) | 2009-08-10 | 2011-02-17 | Windmöller & Hölscher Kg | A method and apparatus for making a sack or bag with nonwoven material, and a sack or bag comprising nonwoven material |
HUP0900669A2 (en) * | 2009-10-26 | 2010-07-28 | Zoltan Mandzsu | Plastic packing bag with overpressure relief, packing method and system |
CA2697780A1 (en) * | 2009-12-31 | 2011-06-30 | Emballage Rouville Inc. | Deflatable bag with laterally perforated liner and non-adjacent humidity barrier |
EP2608954B1 (en) | 2010-08-25 | 2017-03-15 | Windmöller & Hölscher KG | Sack and method for producing sacks |
DE102010039770A1 (en) | 2010-08-25 | 2012-03-01 | Windmöller & Hölscher Kg | Method for manufacturing bag e.g. cross bottom bag, from tube pieces made of plastic material to transport construction materials, involves connecting bottom cover sheet made of partially air-permeable material with straps and/or pockets |
AT512806B1 (en) * | 2012-04-23 | 2014-01-15 | Bsw Machinery Handels Gmbh | Fabric for the production of sacks |
AP2015008206A0 (en) | 2012-07-13 | 2015-01-31 | Basf Agro Bv | Evacuable packaging for insecticide-impregnated nets |
ITMI20130406A1 (en) | 2013-03-18 | 2014-09-19 | Sitma Machinery S P A | BENDING UNIT OF A CONTINUOUS SHEET IN PACKAGING MATERIAL, IN PARTICULAR PAPER, APPLICABLE TO AUTOMATIC PACKAGING MACHINES AND AUTOMATIC PACKAGING MACHINE INCLUDING SUCH A BENDING UNIT |
US11235561B2 (en) | 2016-02-24 | 2022-02-01 | BMSI, Inc. | Packaging laminate |
US11298922B2 (en) | 2016-02-24 | 2022-04-12 | BMSI, Inc. | Packaging laminate |
EP3519311A1 (en) | 2016-09-27 | 2019-08-07 | 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 |
DE102017204533A1 (en) | 2017-03-17 | 2018-09-20 | Windmöller & Hölscher Kg | Plastic bag, in particular FFS bag, and method and device for the manufacture and filling of a bag |
EP3585601B1 (en) * | 2017-02-21 | 2023-08-30 | The Procter & Gamble Company | Methods of making vented flexible containers |
CN110225865B (en) | 2017-02-22 | 2021-12-31 | 宝洁公司 | Method of making a flexible container having a structural support frame |
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, |
US11338975B2 (en) | 2018-05-16 | 2022-05-24 | The Procter & Gamble Company | Container blanks for flexible packages and methods of making flexible packages |
US11780660B2 (en) * | 2019-08-05 | 2023-10-10 | Nazir Mir | Packaging for cooking food |
USD1011183S1 (en) * | 2019-08-14 | 2024-01-16 | Saint-Gobain Placo Sas | Powder packaging |
US20230322475A1 (en) * | 2022-04-08 | 2023-10-12 | Odyssey Logistics And Technology Corporation | Outer Cover for a Flexible Tank and Optimized Flexible Tank for a 40 Foot Shipping Container without a Bulkhead |
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BE779679A (en) * | 1971-02-23 | 1972-08-22 | Kanegafuchi Chemical Ind | Plastic bag - with passage for escape of air between two or more layers of strips sealed discontinuously to bag |
US4134535A (en) * | 1976-06-04 | 1979-01-16 | Hag Aktiengesellschaft | Pressure relief valve for packing containers |
US4470153A (en) * | 1982-03-08 | 1984-09-04 | St. Regis Paper Company | Multiwall pouch bag with vent strip |
US4550546A (en) * | 1982-09-27 | 1985-11-05 | Ethyl Corporation | Sterilizable perforated packaging material |
DE4408244A1 (en) * | 1994-03-11 | 1995-09-14 | Bosch Gmbh Robert | Laminate for the production of packaging containers |
DE19538146A1 (en) | 1995-10-13 | 1997-04-17 | Rovema Gmbh | Pouch with at least one vent and method of making the pouch |
CH690433A5 (en) | 1995-10-16 | 2000-09-15 | Soremartec Sa | gripping device. |
US6491433B2 (en) * | 1997-10-15 | 2002-12-10 | Lyle F. Shabram, Jr. | Bag with venting means |
US6170985B1 (en) * | 1997-10-15 | 2001-01-09 | Lyle F. Shabram, Jr. | Bag with venting means |
DE29807807U1 (en) * | 1998-04-03 | 1999-08-12 | Bischof Und Klein Gmbh & Co, 49525 Lengerich | Packaging material in the form of a sack or bag made of plastic film or the like. airtight material |
DE19920478C2 (en) | 1999-05-04 | 2001-05-03 | Windmoeller & Hoelscher | Device for producing and preferably also for filling and closing bags made of thermoplastic material |
JP4059753B2 (en) * | 2002-11-14 | 2008-03-12 | 大和グラビヤ株式会社 | Storage bag |
PT1607339E (en) | 2004-05-27 | 2008-06-30 | Rkw Ag | Vented plastic bag |
DE102004026538A1 (en) * | 2004-05-27 | 2005-12-22 | Haver & Boecker Ohg | Bag of plastic film that can be filled with a bulk material |
-
2006
- 2006-01-31 DE DE102006004291A patent/DE102006004291A1/en not_active Ceased
-
2007
- 2007-01-02 EP EP13186707.9A patent/EP2690030A3/en not_active Withdrawn
- 2007-01-02 WO PCT/EP2007/000151 patent/WO2007087965A1/en active Application Filing
- 2007-01-02 PL PL07702653T patent/PL1981768T3/en unknown
- 2007-01-02 US US12/223,468 patent/US10118736B2/en not_active Expired - Fee Related
- 2007-01-02 EP EP07702653.2A patent/EP1981768B1/en not_active Not-in-force
- 2007-01-02 ES ES07702653.2T patent/ES2436769T3/en active Active
Also Published As
Publication number | Publication date |
---|---|
US10118736B2 (en) | 2018-11-06 |
EP1981768A1 (en) | 2008-10-22 |
PL1981768T3 (en) | 2014-03-31 |
DE102006004291A1 (en) | 2007-08-09 |
EP2690030A3 (en) | 2014-07-30 |
US20090052813A1 (en) | 2009-02-26 |
WO2007087965A1 (en) | 2007-08-09 |
ES2436769T3 (en) | 2014-01-07 |
EP2690030A2 (en) | 2014-01-29 |
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