EP1720777B1 - Perforated form-fill-seal (ffs) bag - Google Patents

Perforated form-fill-seal (ffs) bag Download PDF

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Publication number
EP1720777B1
EP1720777B1 EP04797855A EP04797855A EP1720777B1 EP 1720777 B1 EP1720777 B1 EP 1720777B1 EP 04797855 A EP04797855 A EP 04797855A EP 04797855 A EP04797855 A EP 04797855A EP 1720777 B1 EP1720777 B1 EP 1720777B1
Authority
EP
European Patent Office
Prior art keywords
bag
perforation
tear
satchel
type
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
Application number
EP04797855A
Other languages
German (de)
French (fr)
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EP1720777A1 (en
Inventor
Konrad Tetenborg
Hans-Ludwig Voss
Hans Renken
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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Filing date
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Publication of EP1720777A1 publication Critical patent/EP1720777A1/en
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Publication of EP1720777B1 publication Critical patent/EP1720777B1/en
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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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/01—Ventilation or drainage of 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5805—Opening or contents-removing devices added or incorporated during package manufacture for tearing a side strip parallel and next to the edge, e.g. by means of a line of weakness
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5816—Opening or contents-removing devices added or incorporated during package manufacture for tearing a corner or other small portion next to the edge, e.g. a U-shaped portion

Definitions

  • the invention relates to a gusseted bag according to the preamble of claim 1, a method for producing and filling such a side gusset bag and a corresponding FFS machine.
  • the generic filling of bags is done with a variety of devices. Often, the bag to be filled during the filling process is detected by a plurality of pairs of gripper tongs.
  • FFS Form Fill and Seal
  • Such a device is among others from the DE 199 36 660 A1 or from the US 5,634,572 known.
  • a hose section made of thermoplastic material provided with a bottom weld seam is filled with filling material in a filling station.
  • vents which are usually in a large part of the Sack outer surface are introduced. These openings are designed so that their diameter is not more than one mm, in order to avoid trickling of contents. For particularly fine products, so-called micro perforations have now been developed, which have vent holes with diameters smaller than 0.2 mm.
  • tear perforation is understood to mean a perforation from incisions or punches. In general, these cuts or stampings are longer or larger than the vent holes described. Thus, cutting lengths of 2 to 10 mm have proven successful. However, incision lengths of 4 to 7 mm are preferred.
  • a tear perforation serves to simplify the tearing open of the bag cover. A tearing of the bag cover in the sense of this document may also be accompanied by the tearing of parts of the bag shell, such as parts of the bottom or top seam.
  • the film tubes, from which the relevant FFS machine forms the bags perforated by a non-FFS machine perforation before the hoses rewound and this hose reel Fed to FFS machine.
  • the present invention starts from the described gusseted sacks produced and filled by the FFS method and solves this problem by changing the severity of the tear perforation in the region of the at least one corner so that the perforation in the space between the edge of the sack and the corner weld is different is the perforation between the corner weld and the centerline of the bag.
  • the measure according to the invention Due to the measure according to the invention, no filling material can trickle through the perforation cuts which are arranged between the sack edge and the corner weld.
  • the measure according to the invention is suitable - as can be deduced from claim 1 - in the same way for flat bags.
  • FIG. 2 shows a gusseted bag 201 according to the prior art, in which the gussets are indicated by the dashed lines 203.
  • a bottom seam 205 closes at the bottom end 210 and at the head end 211 a top seam 204 the ends of the bag.
  • the sack has a tear perforation with perforation cuts 207.
  • FIG. 1 an already very advanced example of a bag 200 according to the invention, which is provided with Eckabsch spatician 206.
  • the tear-off perforation breaks down into a tear-off perforation with longer perforation cuts 207 and a break-off perforation with shorter perforation cuts 208.
  • the longer perforations 207 are located in the region between the edge of the bag 209 and the corner weld 206, while the shorter cuts 208 in the area between the center line M of the bag 200 and the corner weld 206 of the corner, which is subjected to the Abr composedperforation are located.
  • the bag 200 is upside down with respect to the bag 201, that is, the foot end of the bag 210 is at the top of the bag FIG. 1 with the head end at the bottom.
  • the tear-off perforation 207, 208 is in the region of the foot end of this bag, which brings advantages in the filling process to be described yet.
  • FIG. 3 once again shows the foot section 210 of the already in FIG. 1 illustrated bag 200 with the already described properties.
  • FIG. 4 shows a bag 212 of the prior art, as it is known from the 5,060,803.
  • This sack comprises as a Aufrich Huawein Eckabsch spatician 206.
  • the bag 212 has only a notch or a notch 213 on.
  • passages (labyrinth ventilation) 229 can be introduced for better venting of the bag. It is expedient if these passages 229 pass no filler.
  • tear-off perforation of the in FIG. 5 illustrated bag 214 designed. Similar to the tear-off perforation of the sack 200, it is composed of a tear-away perforation 207 with long cuts and a perforation 208 with shorter cuts. However, this Abr facedperforation is further provided with a perforation 215, which is the tearing of a Part of the weld 208, which closes the foot end 210 of the bag 214 allowed. In this way, the tearing of this part is facilitated.
  • FIG. 6 A last embodiment of a bag 217 according to the invention is shown in FIG FIG. 6 shown. Similar to the embodiment with the bag 200, there is a perforation with long perforation cuts 207 in the area between the edge 209 of the bag 217 and the corner weld 206. However, this applies to both corners of the in FIG. 6 illustrated foot portion 210 of the bag shown. Between the two Eckabsch spa aus 206 of the bag 217 is another perforation 216, which is formed by shorter Perforationseinten.
  • FIGS. 7 and 8th components of an FFS machine are displayed.
  • the location of these components can inter alia from the figures of the German application 102 17 397.4 be removed.
  • the machine components shown are a separating cutting and welding station 230 and a needle station 240.
  • the components normally provided for the needling and venting of the bag are used for perforation.
  • the severing and welding station 230 is in an FFS machine at the front of the processing cycle.
  • the film tube 219 is unwound from a development and fed via feed rollers 218 in the separating cut and welding station.
  • the perforation station 220 consists in detail of the holder of the knife carrier 221, on which the knife carrier 223, which is movable in the x direction, is articulated.
  • the knife carrier 223 carries the knife 228 and the squeeze rubber 224.
  • the knife carrier 223 If the knife carrier 223 is moved in the x direction, the knife 228 moves through the wiper 226 or through a recess of the wiper 226, which is not shown, through into the Knife receiving channel 227, the counter position of the knife 225.
  • the counter position of the knife 225 is formed by a traverse.
  • the separating station 230 follows on the first perforation station 220, which again consists of the holder of the knife carrier 231, the knife carrier 233, the knife 226, the sealing strip 234, the counter-position 235, the knife receiving channel 236 and the knife 238.
  • the incision movement of the blade 238 is analogous to the incision movement at the first perforation station 220, which also based FIG.
  • FIG. 8 For example, the first perforation station 220, the severing section and welding station 230 and the second possible needle station 240 are shown in the state where they cut into the film web and sever or perforate the film tube web.
  • the already mentioned second needle station 240 is constructed analogously to the first perforation station 220.
  • the numbering of the functional elements 241-248 of the second needle station 240 is analogous to the numbering of the functional elements 221-228 of the first perforation station 220.
  • the first or the second perforation station can be used for needling, while the respective other station perforated.
  • FIG. 9 the section 250 of a film tube is shown in which the separating cut 256 is introduced, thus dividing two sacks.
  • the bag that arises later is of the same type as that in FIGS. 1 and 3 shown bag 200.
  • the foot 210 of this bag can be seen.
  • the foot end of the bag is provided with a transverse weld 258, which forms the bottom.
  • Pun 251 are shown, which indicate by way of example that the bag can also be needled.
  • FIG. 9 Also Eckabsch spazier 206 according to the invention are in FIG. 9 shown. It should be noted, however, that the illustrated bag section in this form does not necessarily have to be present in this form during the manufacture of the bag. Rather, it may be, for example, that the Eckabsch spazier 206 and the bottom seams 205 can be added to the bag 200 before its separation of the film tube 219. The meaning of FIG. 9 is therefore primarily in the illustration of the location of the various features of the bag 200.
  • FIG. 10 shows a perforation tool 259, which consists of the Perforationsmessern 253 and 252, which are mounted on the knife carrier 254. These perforation blades cut into the tube section 250.
  • the four-ply film material 257 is located in the region of the side folds, while the two-ply material 260 is to be found in the middle region of the bag.
  • arrows z and y illustrate the respective position of the sack components.
  • z again corresponds, as in the other figures, to the transport direction of the film tube, while y extends in the direction of the width of the film tube or sacks. In the direction y, the two are aligned FIGS.
  • FIG. 10 further illustrates that the knives 253 cut further into the tube section 250 than the knives 252, so that the different lengths of the perforation cuts 207 to the perforation cuts 208 come about.
  • the knives 253 and 252 are usually clamped.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Making Paper Articles (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Abstract

The invention relates to a satchel bag or flat bag (200, 201, 212, 214, 217), which is produced and filled by a form-fill-seal (FFS) machine and which has a tear-open perforation (207, 208, 216) at least in the area of at least one of the corners of the bag. The invention is characterized in that the bag has a corner weld seal (206) in the area of the at least one corner.

Description

Die Erfindung betrifft einen Seitenfaltensack nach dem Oberbegriff des Anspruchs 1, ein Verfahren zur Herstellung und Befüllung eines solchen Seitertfaltensacks und eine entsprechende FFS-Maschine.The invention relates to a gusseted bag according to the preamble of claim 1, a method for producing and filling such a side gusset bag and a corresponding FFS machine.

Die gattungsgemäße Abfüllung von Säcken erfolgt mit den verschiedensten Vorrichtungen. Oft wird der zu befüllende Sack während des Abfüllprozesses von einer Mehrzahl von Greiferzangenpaaren erfasst.The generic filling of bags is done with a variety of devices. Often, the bag to be filled during the filling process is detected by a plurality of pairs of gripper tongs.

Eine Untergruppe innerhalb der Abfüllmaschinen bilden die sogenannten FFS-Maschinen. Hierbei steht das Kürzel FFS für Form Fill and Seal, so dass ein besonderes Kennzeichen der Arbeitsweise dieser Maschinen in der Verschweißung der Säcke nach dem Befüllprozess liegt.A subgroup within the filling machines form the so-called FFS machines. Here, the abbreviation FFS stands for Form Fill and Seal, so that a special characteristic of the operation of these machines lies in the welding of the bags after the filling process.

Eine solche Vorrichtung ist unter anderem aus der DE 199 36 660 A1 oder aus der US 5,634,572 bekannt. Dort wird ein mit einer Bodenschweißnaht versehener Schlauchabschnitt aus thermoplastischem Kunststoff In einer Füllstation mit Füllgut befüllt.Such a device is among others from the DE 199 36 660 A1 or from the US 5,634,572 known. There, a hose section made of thermoplastic material provided with a bottom weld seam is filled with filling material in a filling station.

Diese Maschinen eignen sich hervorragend um Säcke schnell und kostengünstig zu bilden und zu befüllen.These machines are ideal for quickly and inexpensively forming and filling bags.

Die von FFS-Maschinen hergestellten Säcke werden oft mit rieselfähigem Gut befüllt. Auch aus diesem Grund werden diese Säcke in der Regel nicht mit irgendwelchen Löchern oder Einschnitten versehen. Eine erste Ausnahme bilden Entlüftungsöffnungen, die in der Regel in einen großen Teil der Sackaußenfläche eingebracht sind. Diese Öffnungen werden so gestaltet, dass ihr Durchmesser nicht mehr als einen mm beträgt, um ein Ausrieseln von Füllgut zu vermeiden. Für besonders feine Füllgüter sind mittlerweile sogenannte Mikroperforationen entwickelt worden, die Entlüftungslöcher mit Durchmessern aufweisen, die kleiner als 0,2 mm sind.The bags produced by FFS machines are often filled with free-flowing material. Also for this reason, these bags are usually not provided with any holes or cuts. A first exception are vents, which are usually in a large part of the Sack outer surface are introduced. These openings are designed so that their diameter is not more than one mm, in order to avoid trickling of contents. For particularly fine products, so-called micro perforations have now been developed, which have vent holes with diameters smaller than 0.2 mm.

In jüngster Zeit hat sich die Notwendigkeit ergeben, diese Säcke mit einer Aufreißperforation zu versehen. In diesem Zusammenhang wird unter Aufreißperforation eine Perforation aus Einschnitten oder Einstanzungen verstanden. In der Regel sind diese Einschnitte oder Einstanzungen länger beziehungsweise größer als die beschriebenen Entlüftungslöcher. So haben sich Einschnittlängen von 2 bis 10 mm bewährt. Bevorzugt werden jedoch Einschnittlängen von 4 bis 7 mm. Eine Aufreißperforation dient der Vereinfachung des Aufreißens der Sackhülle. Ein Aufreißen der Sackhülle im Sinne dieser Druckschrift kann auch mit dem Abreißen von Teilen der Sackhülle, wie von Teilen der Boden- oder Kopfnaht - einhergehen.Recently, there has been a need to provide these bags with a tear perforation. In this context, tear perforation is understood to mean a perforation from incisions or punches. In general, these cuts or stampings are longer or larger than the vent holes described. Thus, cutting lengths of 2 to 10 mm have proven successful. However, incision lengths of 4 to 7 mm are preferred. A tear perforation serves to simplify the tearing open of the bag cover. A tearing of the bag cover in the sense of this document may also be accompanied by the tearing of parts of the bag shell, such as parts of the bottom or top seam.

Zur Herstellung und zur Befüllung der bisher bekannten Säcke mit Abreißperforationen im FFS-Verfahren werden die Folienschläuche, aus denen die betreffende FFS-Maschine die Säcke bildet, von einer nicht der FFS-Maschine zugeordneten Perforationseinrichtung perforiert, bevor die Schläuche wieder aufgewickelt und dieser Schlauchwickel der FFS-Maschine zugeführt werden.For producing and filling the hitherto known bags with tear-off perforations in the FFS method, the film tubes, from which the relevant FFS machine forms the bags, perforated by a non-FFS machine perforation before the hoses rewound and this hose reel Fed to FFS machine.

Bei der Verwendung dieser Säcke hat sich jedoch gezeigt, dass gerade die Aufreißperforation eine Schwachstelle bildet, durch die Füllgut rieselt. Diesen Nachteil nimmt man bisher in Kauf oder verzichtet ganz auf eine derartige Perforation von Säcken für rieselförmiges Gut.When using these bags, however, it has been shown that it is precisely the tear perforation that forms a weak point through which contents trickle. This disadvantage has previously been accepted or dispensed entirely with such a perforation of bags for free-flowing material.

Auch bei Beuteln, die als Füllgut tablettenförmige oder pastillenförmige Produkte enthalten, sind Aufreißperforationen bekannt. Solche Beutel sind aus der DE 44 45 729 A1 bekann, die die Merkmale der Oberbegriffe der Ansprüche 1 und 8 aufweist. Die EP 0280661A2 weist die Merkmale des Oberbegriffs des Anspruchs 9 auf. Ähnliche Beutel, die unter anderem der Verpackung von Lebensmitteln dienen, sind aus der US 5,060,803 bekannt. Die aus den beiden letztgenannten Druckschriften bekannten Beutel weisen neben den Aufreißperforationen auch so genannte Eckabschweißungen auf.Even with bags that contain tablet-like or pastille-shaped products as filling products, tear-open perforations are known. Such bags are out of the DE 44 45 729 A1 known, having the features of the preamble of claims 1 and 8. The EP 0280661A2 has the features of the preamble of claim 9. Similar bags, which among other things serve the packaging of food, are from the US 5,060,803 known. The bags known from the two last-mentioned publications have, in addition to the tear-open perforations, also so-called corner welds.

Die Aufgabe der vorliegenden Erfindung ist es daher, einen Flach- oder Seitenfaltensack,

  • welcher von einer FFS-Maschine hergestellt und befüllt wurde,
  • welcher leicht aufreißbar ist und
  • welcher im Bereich seiner Ecken Schweißflächen aufweist, so zu gestalten, dass
  • er sich durch geringere Rieselverluste auszeichnet.
The object of the present invention is therefore to provide a flat or gusseted bag,
  • which was produced and filled by an FFS machine,
  • which is easily ruptured and
  • which has welding surfaces in the region of its corners, so that
  • it is characterized by lower Rieselverluste.

Die vorliegende Erfindung geht von den geschilderten im FFS-Verfahren hergestellten und befüllten Seitenfaltensäcken aus und löst diese Aufgabe dadurch, dasssich die Ausprägung der Aufreißperforation im Bereich der zumindest einen Ecke so ändert, dass die Perforation im Zwischenraum zwischen der Kante des Sackes und der Eckabschweißung anders beschaffen ist, als die Perforation zwischen der Eckabschweißung und der Mittellinie des Sacks.The present invention starts from the described gusseted sacks produced and filled by the FFS method and solves this problem by changing the severity of the tear perforation in the region of the at least one corner so that the perforation in the space between the edge of the sack and the corner weld is different is the perforation between the corner weld and the centerline of the bag.

Durch die erfindungsgemäße Maßnahme kann kein Befüllgut durch die Perforationsschnitte rieseln, die zwischen der Sackkante und der Eckabschweißung angeordnet sind. Die erfindungsgemäße Maßnahme eignet sich - wie dem Anspruch 1 zu entnehmen ist - in gleicher Weise für Flachsäcke.Due to the measure according to the invention, no filling material can trickle through the perforation cuts which are arranged between the sack edge and the corner weld. The measure according to the invention is suitable - as can be deduced from claim 1 - in the same way for flat bags.

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
Einen erfindungsgemäßen Sack
Fig. 2
Einen Sack nach dem Stand der Technik
Fig. 3
Ein weiteres Ausführungsbeispiel erfindungsgemäßer Säcke
Fig. 4
Ein Sack des Standes der Technik
Fig. 5
Ein weiteres Ausführungsbeispiel erfindungsgemäßer Säcke
Fig. 6
Ein weiteres Ausführungsbeispiel erfindungsgemäßer Säcke
Fig. 7
Eine Trennschnitt-, Schweiß- und Perforationsstation in passivem Zustand
Fig. 8
Dieselbe Trennschnitt-, Schweiß- und Perforationsstation wie in Figur 7 während des Schneidens, Schweißens und Perforierens
Fig. 9
Eine Illustration eines Folienschlauchabschnittes
Fig. 10
Eine Skizze eines Einschnittwerkzeuges
The individual figures show:
Fig. 1
A bag according to the invention
Fig. 2
A bag according to the state of the art
Fig. 3
Another embodiment of inventive bags
Fig. 4
A bag of the prior art
Fig. 5
Another embodiment of inventive bags
Fig. 6
Another embodiment of inventive bags
Fig. 7
A separating, welding and perforating station in passive state
Fig. 8
The same separating, welding and perforating station as in FIG. 7 during cutting, welding and perforating
Fig. 9
An illustration of a foil tube section
Fig. 10
A sketch of a cutting tool

Figur 2 zeigt einen Seitenfaltensack 201 nach dem Stand der Technik, bei dem die Seitenfalten durch die gestrichelten Linien 203 angedeutet sind. Wie bei einem FFS-Sack üblich verschließt am Bodenende 210 eine Bodennaht 205 und am Kopfende 211 eine Kopfnaht 204 die Enden des Sackes. Der Sack weist eine Aufreißperforation mit Perforationseinschnitten 207 auf. FIG. 2 shows a gusseted bag 201 according to the prior art, in which the gussets are indicated by the dashed lines 203. As is usual with an FFS sack, a bottom seam 205 closes at the bottom end 210 and at the head end 211 a top seam 204 the ends of the bag. The sack has a tear perforation with perforation cuts 207.

Dem gegenüber zeigt Figur 1 ein bereits sehr fortgeschrittenes Beispiel eines erfindungsgemäßen Sackes 200, welcher mit Eckabschweißungen 206 versehen ist. Des weiteren ist zu beachten, dass die Abreißperforation in eine Abreißperforation mit längeren Perforationseinschnitten 207 und eine Abreißperforation mit kürzeren Perforationseinschnitten 208 zerfällt. Die längeren Perforationseinschnitte 207 befinden sich in dem Bereich zwischen der Kante des Sackes 209 und der Eckabschweißung 206, während sich die kürzeren Einschnitte 208 in dem Bereich zwischen der Mittelinie M des Sackes 200 und der Eckabschweißung 206 der Ecke, welche mit der Abreißperforation beaufschlagt ist, befinden. Des weiteren ist zu beachten, dass der Sack 200 gegenüber dem Sack 201 auf dem Kopf steht, das heißt, dass sich das Fußende des Sackes 210 im oberen Bereich der Figur 1 befindet, während das Kopfende sich im unteren Bereich befindet. Damit befindet sich die Abreißperforation 207, 208 im Bereich des Fußendes dieses Sackes, was bei den noch zu schildernden Befüllverfahren Vorteile mit sich bringt.Opposite shows FIG. 1 an already very advanced example of a bag 200 according to the invention, which is provided with Eckabschweißungen 206. Furthermore, it should be noted that the tear-off perforation breaks down into a tear-off perforation with longer perforation cuts 207 and a break-off perforation with shorter perforation cuts 208. The longer perforations 207 are located in the region between the edge of the bag 209 and the corner weld 206, while the shorter cuts 208 in the area between the center line M of the bag 200 and the corner weld 206 of the corner, which is subjected to the Abreißperforation are located. It should also be noted that the bag 200 is upside down with respect to the bag 201, that is, the foot end of the bag 210 is at the top of the bag FIG. 1 with the head end at the bottom. Thus, the tear-off perforation 207, 208 is in the region of the foot end of this bag, which brings advantages in the filling process to be described yet.

Figur 3 zeigt noch einmal den Fußabschnitt 210 des bereits in Figur 1 dargestellten Sackes 200 mit den bereits geschilderten Eigenschaften. FIG. 3 once again shows the foot section 210 of the already in FIG. 1 illustrated bag 200 with the already described properties.

Figur 4 zeigt einen Sack 212 nach dem Stand der Technik, wie er aus der 5,060,803 bekannt ist. Dieser Sack umfasst als Aufreißhilfen Eckabschweißungen 206. Im Unterschied zu dem bereits gezeigten Ausführungsbeispiel 200 weist der Sack 212 lediglich eine Einkerbung beziehungsweise einen Einschnitt 213 auf. FIG. 4 shows a bag 212 of the prior art, as it is known from the 5,060,803. This sack comprises as a Aufreißhilfen Eckabschweißungen 206. In contrast to the embodiment 200 already shown, the bag 212 has only a notch or a notch 213 on.

In einer erfindungsgemäßen Eckabschweißung können zur besseren Entlüftung des Sackes Durchlässe (Labyrinthentlüftung) 229 eingebracht sein. Es ist zweckmäßig, wenn auch diese Durchlässe 229 kein Füllmaterial durchlassen. Wieder anders ist die Abreißperforation des in Figur 5 dargestellten Sackes 214 ausgestaltet. Ähnlich wie die Abreißperforation des Sackes 200 setzt sie sich aus einer Abreißperforation 207 mit langen Einschnitten und einer Perforation 208 mit kürzeren Einschnitten zusammen. Allerdings ist diese Abreißperforation des weiteren mit einer Perforation 215 versehen, welche das Abreißen eines Teiles der Schweißnaht 208, welche das Fußende 210 des Sackes 214 verschließt, gestattet. Auf diese Weise wird das Abreißen dieses Teiles erleichtert.In a corner weld according to the invention, passages (labyrinth ventilation) 229 can be introduced for better venting of the bag. It is expedient if these passages 229 pass no filler. Again different is the tear-off perforation of the in FIG. 5 illustrated bag 214 designed. Similar to the tear-off perforation of the sack 200, it is composed of a tear-away perforation 207 with long cuts and a perforation 208 with shorter cuts. However, this Abreißperforation is further provided with a perforation 215, which is the tearing of a Part of the weld 208, which closes the foot end 210 of the bag 214 allowed. In this way, the tearing of this part is facilitated.

Ein letztes Ausführungsbeispiel eines erfindungsgemäßen Sackes 217 wird in Figur 6 dargestellt. Ähnlich wie in dem Ausführungsbeispiel mit dem Sack 200 ist in dem Bereich zwischen der Kante 209 des Sackes 217 und der Eckabschweißung 206 eine Perforation mit langen Perforationseinschnitten 207 vorhanden. Dies gilt jedoch für beide Ecken des in Figur 6 dargestellten Fußbereiches 210 des dargestellten Sackes. Zwischen den beiden Eckabschweißungen 206 des Sackes 217 befindet sich eine weitere Perforation 216, welche von kürzeren Perforationseinschnitten gebildet wird.A last embodiment of a bag 217 according to the invention is shown in FIG FIG. 6 shown. Similar to the embodiment with the bag 200, there is a perforation with long perforation cuts 207 in the area between the edge 209 of the bag 217 and the corner weld 206. However, this applies to both corners of the in FIG. 6 illustrated foot portion 210 of the bag shown. Between the two Eckabschweißungen 206 of the bag 217 is another perforation 216, which is formed by shorter Perforationseinschnitten.

In den Figuren 7 und 8 werden Bestandteile einer FFS-Maschine dargestellt. Die Lage dieser Bestandteile kann unter anderem aus den Figuren der deutschen Anmeldung 102 17 397.4 entnommen werden. Bei den gezeigten Maschinenbestandteilen handelt es sich um eine Trennschnitt- und Schweißstation 230 sowie eine Nadelstation 240. Allerdings werden die normalerweise für die Nadelung und zur Entlüftung des Sackes vorgesehenen Bestandteile zur Perforation eingesetzt. In der Regel befindet sich die Trennschnitt- und Schweißstation 230 in einer FFS-Maschine im vorderen Bereich des Verarbeitungszykluses. In der Regel wird der Folienschlauch 219 von einer Abwicklung abgewickelt und über Vorzugswalzen 218 in die Trennschnitt- und Schweißstation zugeführt. In den Figuren 7 und 8 beginnt die Darstellung der Trennschnitt- und Schweißstation 230 mit dem Vorzugswalzenpaar, welches aus den Vorzugswalzen 218 gebildet wird. Durch den von diesen beiden Vorzugswalzen 218 gebildeten Walzenspalt läuft der Folienschlauch 219 in die Trennschnitt-, Schweiß- und Perforationsstation 230 hinein. Die Perforationsstation 220 besteht im einzelnen aus dem Halter des Messerträgers 221, an welchem der Messerträger 223, welcher in x-Richtung beweglich ist, angelenkt ist. Der Messerträger 223 trägt das Messer 228 sowie das Abquetschgummi 224. Wird der Messerträger 223 in x-Richtung bewegt, so fährt das Messer 228 durch den Abstreifer 226 beziehungsweise durch eine Ausnehmung des Abstreifers 226, die nicht dargestellt ist, hindurch bis in den Messeraufnahmekanal 227, der Gegenlage des Messers 225. Die Gegenlage des Messers 225 wird von einer Traverse gebildet. In der Transportrichtung z des Folienschlauches folgt auf die erste Perforationsstation 220 die Trennschnittstation 230, welche wieder aus dem Halter des Messerträgers 231, dem Messerträger 233, dem Messer 226, den Schweißleiste 234, der Gegenlage 235, dem Messeraufnahmekanal 236 und dem Messer 238 besteht. Die Einschnittbewegung des Messers 238 erfolgt analog zu der Einschnittbewegung bei der ersten Perforationsstation 220, was auch anhand Figur 8 gesehen werden kann. In Figur 8 sind die erste Perforationsstation 220, die Trennschnitt- und Schweißstation 230 und die zweite mögliche Nadelstation 240 in dem Zustand gezeigt, in dem sie in die Folienbahn einschneiden und die Folienschlauchbahn durchtrennen beziehungsweise perforieren. Die bereits erwähnte zweite Nadelstation 240 ist analog zu der ersten Perforationsstation 220 aufgebaut. Die Nummerierung der Funktionselemente 241-248 der zweiten Nadelstation 240 erfolgt analog zu der Nummerierung der Funktionselemente 221-228 der ersten Perforationsstation 220. Die erste oder die zweite Perforationsstation kann zum Nadeln eingesetzt werden, während die jeweils andere Station perforiert.In the FIGS. 7 and 8th components of an FFS machine are displayed. The location of these components can inter alia from the figures of the German application 102 17 397.4 be removed. The machine components shown are a separating cutting and welding station 230 and a needle station 240. However, the components normally provided for the needling and venting of the bag are used for perforation. Typically, the severing and welding station 230 is in an FFS machine at the front of the processing cycle. In general, the film tube 219 is unwound from a development and fed via feed rollers 218 in the separating cut and welding station. In the FIGS. 7 and 8th begins the presentation of the Trennschnitt- and welding station 230 with the Vorzugswalzenpaar, which is formed from the feed rollers 218. Due to the nip formed by these two feed rollers 218, the film tube 219 runs into the separating cut, welding and perforating station 230. The perforation station 220 consists in detail of the holder of the knife carrier 221, on which the knife carrier 223, which is movable in the x direction, is articulated. The knife carrier 223 carries the knife 228 and the squeeze rubber 224. If the knife carrier 223 is moved in the x direction, the knife 228 moves through the wiper 226 or through a recess of the wiper 226, which is not shown, through into the Knife receiving channel 227, the counter position of the knife 225. The counter position of the knife 225 is formed by a traverse. In the transport direction z of the film tube, the separating station 230 follows on the first perforation station 220, which again consists of the holder of the knife carrier 231, the knife carrier 233, the knife 226, the sealing strip 234, the counter-position 235, the knife receiving channel 236 and the knife 238. The incision movement of the blade 238 is analogous to the incision movement at the first perforation station 220, which also based FIG. 8 can be seen. In FIG. 8 For example, the first perforation station 220, the severing section and welding station 230 and the second possible needle station 240 are shown in the state where they cut into the film web and sever or perforate the film tube web. The already mentioned second needle station 240 is constructed analogously to the first perforation station 220. The numbering of the functional elements 241-248 of the second needle station 240 is analogous to the numbering of the functional elements 221-228 of the first perforation station 220. The first or the second perforation station can be used for needling, while the respective other station perforated.

In Figur 9 wird derjenige Abschnitt 250 eines Folienschlauches gezeigt, in den der Trennschnitt 256 eingebracht wird und so zwei Säcke teilt. Oberhalb des Trennschnittes 256 ist zu sehen, dass der später entstehende Sack von derselben Art ist wie der in den Figuren 1 und 3 gezeigte Sack 200. Oberhalb des Trennschnittes 256 ist das Fußende 210 dieses Sackes zu sehen. Oberhalb des Fußendes wird der Sack mit einer Querschweißung 258, welche den Boden bildet, versehen. Im Bereich einer der Ecken des Sackes befinden sich wieder große Perforationseinschnitte 207 und kürzere Perforationseinschnitte 208. Zusätzlich zu den schon gezeigten Merkmalen des Sackes 200 sind in Figur 9 Nadelungen 251 gezeigt, welche beispielhaft angeben, dass der Sack auch genadelt werden kann. Auch erfindungsgemäße Eckabschweißungen 206 sind in Figur 9 dargestellt. Zu beachten ist jedoch, dass der dargestellte Sackabschnitt in dieser Form nicht unbedingt während der Herstellung des Sackes in dieser Form vorhanden sein muss. Vielmehr kann es beispielsweise sein, dass die Eckabschweißungen 206 und die Bodennähte 205 dem Sack 200 noch vor seiner Vereinzelung von dem Folienschlauch 219 beigefügt werden können. Der Sinn der Figur 9 besteht daher in erster Linie in der Veranschaulichung der Lage der verschiedenen Merkmale des Sackes 200.In FIG. 9 the section 250 of a film tube is shown in which the separating cut 256 is introduced, thus dividing two sacks. Above the separating cut 256, it can be seen that the bag that arises later is of the same type as that in FIG FIGS. 1 and 3 shown bag 200. Above the separating cut 256, the foot 210 of this bag can be seen. Above the foot end of the bag is provided with a transverse weld 258, which forms the bottom. In the area of one of the corners of the bag there are again large perforations 207 and shorter perforations 208. In addition to the features of the bag 200 already shown are in FIG. 9 Needles 251 are shown, which indicate by way of example that the bag can also be needled. Also Eckabschweißungen 206 according to the invention are in FIG. 9 shown. It should be noted, however, that the illustrated bag section in this form does not necessarily have to be present in this form during the manufacture of the bag. Rather, it may be, for example, that the Eckabschweißungen 206 and the bottom seams 205 can be added to the bag 200 before its separation of the film tube 219. The meaning of FIG. 9 is therefore primarily in the illustration of the location of the various features of the bag 200.

Figur 10 zeigt ein Perforationswerkzeug 259, welches aus den Perforationsmessern 253 und 252 besteht, welche auf dem Messerträger 254 angebracht sind. Diese Perforationsmesser schneiden in den Schlauchabschnitt 250 ein. In diesem auch in Figur 9 gezeigten Abschnitt eines Folienschlauches 250 befindet sich vierlagiges Folienmaterial 257 und zweilagiges Folienmaterial 260. Das vierlagige Folienmaterial 257 befindet sich im Bereich der Seitenfalten, während das zweilagige Material 260 im mittleren Bereich des Sackes anzutreffen ist. In den Figuren 9 und 10 illustrieren die Pfeile z und y die jeweilige Lage der Sackbestandteile. Hierbei entspricht z wieder, wie in den anderen Figuren auch, der Transportrichtung des Folienschlauches, während y in der Richtung der Breite des Folienschlauches beziehungsweise der Säcke verläuft. In der Richtung y fluchten die beiden Figuren 9 und 10, wobei der rechte Teil des Folienschlauchabschnittes 250 in Figur 10 nicht dargestellt ist. Figur 10 illustriert außerdem, dass die Messer 253 weiter in den Schlauchabschnitt 250 einschneiden als die Messer 252, so dass die unterschiedliche Länge der Perforationseinschnitte 207 zu den Perforationseinschnitten 208 zustande kommt. Auf dem Messerträger 254 werden die Messer 253 und 252 in der Regel geklemmt. Bezugszeichenliste 200 Sack 201 Seitenfaltensack 202 203 Kante der Seitenfalten, gestrichelte Linie 204 Kopfnaht 205 Bodennaht 206 Eckabschweißung 207 Abreißperforation mit längeren Perforationseinschnitten 208 Abreißperforation 209 Sackkante 210 Fußende des Sackes 211 Kopfende 212 Sack nach dem Stand der Technik 213 Einschnitt 214 Erfindungsgemäßer Sack 215 Perforation 216 Perforation 217 Erfindungsgemäßer Sack 218 Vorzugswalze 219 Folienschlauch 220 Perforationsstation 221 Halter des Messerträgers 223 Messerträger 224 Abquetschgummi 225 Gegenlage des Messers 226 Abstreifer 227 Messeraufnahmekanal 228 Messer 229 Durchlass 230 Trennschnitt- und Schweißstation 231 Halter des Messerträgers 232 233 Messerträger 234 Schweißleiste 235 Gegenlage 236 Messeraufnahmekanal 237 238 Trennmesser 239 240 Nadelstation 241-248 Funktionselemente 249 250 Abschnitt eines Folienschlauches 251 Nadelung 252 Perforationsmesser 253 Perforationsmesser 254 Messerträger 255 Seitenfaltenkante 256 Trennschnitt 257 Vierlagiges Folienmaterial 258 Querschweißnaht 259 Perforationswerkzeug 260 Zweilagiges Folienmaterial x Bewegungsrichtung des Messerträgers 223 y Richtung quer zu den Richtungen x und z z Transportrichtung des Folienschlauches FIG. 10 shows a perforation tool 259, which consists of the Perforationsmessern 253 and 252, which are mounted on the knife carrier 254. These perforation blades cut into the tube section 250. In this too in FIG. 9 The four-ply film material 257 is located in the region of the side folds, while the two-ply material 260 is to be found in the middle region of the bag. In the FIGS. 9 and 10 arrows z and y illustrate the respective position of the sack components. In this case, z again corresponds, as in the other figures, to the transport direction of the film tube, while y extends in the direction of the width of the film tube or sacks. In the direction y, the two are aligned FIGS. 9 and 10 , wherein the right part of the film tube section 250 in FIG. 10 not shown. FIG. 10 further illustrates that the knives 253 cut further into the tube section 250 than the knives 252, so that the different lengths of the perforation cuts 207 to the perforation cuts 208 come about. On the knife carrier 254, the knives 253 and 252 are usually clamped. LIST OF REFERENCE NUMBERS 200 bag 201 Gusseted bag 202 203 Edge of gussets, dashed line 204 head seam 205 bottom seam 206 corner welding 207 Tear perforation with longer perforations 208 tear-off 209 sack edge 210 Foot of the bag 211 head 212 Sack according to the prior art 213 incision 214 Inventive bag 215 perforation 216 perforation 217 Inventive bag 218 advancement roller 219 film tube 220 perforating 221 Holder of the knife carrier 223 blade carrier 224 Abquetschgummi 225 Counterpart of the knife 226 scraper 227 Knife receiving passage 228 knife 229 passage 230 Separating cut and welding station 231 Holder of the knife carrier 232 233 blade carrier 234 sealing bar 235 counter support 236 Knife receiving passage 237 238 separating knife 239 240 needling station 241-248 functional elements 249 250 Section of a film tube 251 needling 252 perforation 253 perforation 254 blade carrier 255 Gusseted edge 256 separating cut 257 Four-layer film material 258 transverse weld 259 perforation 260 Two-ply foil material x Direction of movement of the knife carrier 223 y Direction transverse to the directions x and z z Transport direction of the film tube

Claims (9)

  1. Satchel-type or flat bag (200, 217)
    - which has been produced and filled by an FFS machine and
    - which has a tear-open perforation (207, 208, 216) at least in the region of at least one of the corners of the bag,
    - the bag having a corner seal (206) in the region of the at least one corner,
    - the tear-open perforation (207, 208, 216) extending into the region between the corner seal and the centre line (M) of the bag (200),
    characterized in that the shape of the tear-open perforation (207, 208, 216) changes in the region of the at least one corner such that the perforation (207) in the interspace between the edge (209) of the bag (200, 214, 217) and the corner seal (206) is different from the perforation (208) between the corner seal (206) and the centre line (M) of the bag (200).
  2. Satchel-type or flat bag according to Claim 1, characterized in that the length or extent of the perforation incisions (207) in the interspace between the edge of the bag (200) and the corner seal (206) is greater than the length of the perforation incisions (208) between the corner seal (206) and the centre line (M) of the bag (200, 214, 217).
  3. Satchel-type or flat bag according to one of the preceding claims, characterized in that at least the perforation cuts (208) between the corner seal (206) and the centre line (M) of the bag (200, 214, 217) have a length or extent which is smaller than the extent of the grains of the contents of the bag (200, 214, 217).
  4. Satchel-type or flat bag according to one of the preceding claims, characterized in that at least the perforation cuts (208) between the corner seal (206) and the centre line (M) of the bag (200, 214, 217) have a length or extent which is smaller than the diameter of the grains of the contents of the bag (200).
  5. Satchel-type or flat bag according to one of the preceding claims, characterized in that the corner seal (206) has passages (229).
  6. Satchel-type or flat bag according to one of the preceding claims, characterized in that both corners of the head (211) and/or of the bottom (210) are equipped with corner regions according to one of the preceding claims.
  7. Satchel-type or flat bag according to one of the preceding claims, characterized in that the perforation cuts (207, 208, 216) are arranged on one line at least in the region of one corner.
  8. Method for producing and for filling a satchel-type bag with the aid of an FFS machine,
    - in which the bag (200, 214, 217) is provided with a corner seal (206), and
    - in which the satchel-type bag (200, 214, 217) is provided with a tear-open perforation which extends into the region between the corner seal and the centre line (M) of the bag (200),
    characterized
    - in that the tear-open perforation (207, 208, 216) is introduced during processing in the FFS machine, and
    - in that at the same time the perforation (207) in the interspace between the edge (209) of the bag (200, 214, 217) and the corner seal (206) is configured differently from the perforation (208) between the corner seal (206) and the centre line (M) of the bag (200).
  9. FFS machine for producing and filling satchel-type or flat bags (200, 214, 217), which comprises means for applying a tear-open perforation (220, 240), by which components of the satchel-type bags (200, 214, 217) can be provided with a tear-open perforation (220, 240) while they are running through the FFS machine, characterized in that means of applying the tear-open perforation (220, 240) are provided, by which the bags (200, 214, 217) can be provided with perforation cuts (207, 208, 216), the length or extent of which varies over the width of the bags (200, 214, 217), the means for applying the tear-open perforation (220, 240) comprising a plurality of perforating knives (252, 253) which are mounted on a knife carrier (254) in such a way that some knives (253) cut further into the components of the bags (200) than other knives (252) so as to vary the length of the perforation cuts (207).
EP04797855A 2003-11-12 2004-11-11 Perforated form-fill-seal (ffs) bag Not-in-force EP1720777B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10353095A DE10353095A1 (en) 2003-11-12 2003-11-12 Perforated FFS sack
PCT/EP2004/012847 WO2005047136A1 (en) 2003-11-12 2004-11-11 Perforated form-fill-seal (ffs) bag

Publications (2)

Publication Number Publication Date
EP1720777A1 EP1720777A1 (en) 2006-11-15
EP1720777B1 true EP1720777B1 (en) 2012-05-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04797855A Not-in-force EP1720777B1 (en) 2003-11-12 2004-11-11 Perforated form-fill-seal (ffs) bag

Country Status (5)

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EP (1) EP1720777B1 (en)
JP (1) JP4891085B2 (en)
DE (1) DE10353095A1 (en)
ES (1) ES2385889T3 (en)
WO (1) WO2005047136A1 (en)

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Also Published As

Publication number Publication date
JP2007528824A (en) 2007-10-18
DE10353095A1 (en) 2005-06-30
EP1720777A1 (en) 2006-11-15
WO2005047136A1 (en) 2005-05-26
JP4891085B2 (en) 2012-03-07
ES2385889T3 (en) 2012-08-02

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