EP0722408B1 - Bag, in particular for packaging humidity-sensitive substances - Google Patents
Bag, in particular for packaging humidity-sensitive substances Download PDFInfo
- Publication number
- EP0722408B1 EP0722408B1 EP94929478A EP94929478A EP0722408B1 EP 0722408 B1 EP0722408 B1 EP 0722408B1 EP 94929478 A EP94929478 A EP 94929478A EP 94929478 A EP94929478 A EP 94929478A EP 0722408 B1 EP0722408 B1 EP 0722408B1
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- EP
- European Patent Office
- Prior art keywords
- block
- bag
- adhesively bonded
- bag according
- block bottom
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/10—Bags or like containers made of paper and having structural provision for thickness of contents with gusseted sides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
Definitions
- the invention relates to a block-bottom bag made of plastic film, especially for packaging sensitive to moisture Fabrics with a front wall, a rear wall and with side walls, the longitudinal outer edges with the front wall and the rear wall form, the block bottom by folding over parts of the front wall, the back wall and the side walls along the least four transverse outer edges is formed on one end face.
- Bags used for packaging moisture sensitive Fabrics such as Building materials or washing powder generally consist of thick paper or cardboard to to ensure their dimensional stability and their stackability. Around The bags are designed to prevent moisture ingress provided with a waterproof or vapor-tight coating that consist of a plastic coating or a layer of lacquer can and the suitably connected to the paper bag is.
- Packaging made of such composite materials is not only expensive to manufacture, but they are also difficult environmentally friendly to dispose of, because before suitable recycling different materials of the bag are separated have to.
- Block bottom bags are manufactured with the help of Block bottom bag machines generally in such a way that First from a flat material such as paper, e.g. as a gusseted tube trained hose is manufactured from which individual tube sections are separated, the bottom side Then ends to form the block bottom as corner inserts and Bottom side envelopes are folded inwards and connected (US-A 4 056 045). It is known to one on the block floor separate bottom cut that is made up of a rectangular sheet Paper, cardboard or plastic is to be glued to one to achieve firm and tight bottom closure of the bag (DE-A 41 02 548; DE-A 19 39 591).
- block bottom bags the block bottom to perform multilayer to improve the tightness, wherein in an internal ledger is worked into the block base, which Corner folds and the bottom side envelopes of the gusseted tube is connected by gluing (DE-U 87 06 305).
- Block-bottom bags consist of a multilayer Paper and film material, i.e. a composite material such as laminated paper or polypropylene-coated paper (EP-A-0 298 252).
- a composite material such as laminated paper or polypropylene-coated paper (EP-A-0 298 252).
- US-A-4 856 656 is also usable for bags Multi-layer film with a total of three layers known from Low pressure polyethylene (LDPE) and high pressure polyethylene (HDPE) can exist.
- US-A-5 344 714 discloses a multilayer film with a layer of linear low pressure polyethylene (LDPE) and another layer of high pressure polyethylene (HDPE), which can also be extruded directly as a hose.
- US-A 5 401 546 is a bag-like container for Storage and disposal of grease and oil known that from several sections of a composite film made of low-pressure polyethylene, linear low pressure polyethylene, high pressure polyethylene and polyester is used to form the tubular Container are welded together.
- the object of the invention is a block bottom bag of the beginning to create the type mentioned that is both moisture-repellent and is easily recyclable as well as high dimensional stability and has shape accuracy and the simple and inexpensive by machine can be made and folded.
- the bag completely made of a liquid and vapor tight, one High density polyethylene film layer (HDPE) and a polyethylene film layer low density (LDPE) plastic composite film there is a thickness of at least 50 microns and has a maximum of 300 microns, the bag on its longitudinal seam is glued.
- the one with the block bottom provided plastic bags, as known per se, as gusseted bags educated.
- Block bottom bags have the block bottom bag formed in the aforementioned manner good moisture-repellent properties with high strength, so that sensitive goods in it reliably against access by Moisture can be packed.
- Block bottom bags also enable a tight bottom seal.
- the bag as a whole consists of only one Material, namely polyethylene material, it can be Send for recycling directly after use.
- High density polyethylene (HDPE) and low density polyethylene (LDPE) are both classed as polyolefins and are in their chemical composition so similar that a common one Recycling is easily possible.
- the block bottom is preferably covered with a plastic film cover provided that the dimensions of the block floor about corresponds and is glued onto the block floor from the outside. This gives the block-bottom bag additional rigidity and has a homogeneous surface on its bottom side, that can be easily printed.
- the bottom of the block-bottom bag glued with two parallel adhesive beads is at least one length equal to the width of one Long side corresponds, and if the cover is made of plastic film is fully glued to the floor. This allows the tabs of the block bottom glued together with a little adhesive will. Through the full-surface gluing of the cover with the A particularly good seal is guaranteed on the floor.
- the adhesive is preferably a hot melt adhesive, which is particularly is easy to process, high stability of the Guaranteed adhesive seams and, thanks to its large volume, the seams, seals particularly well in the floor area.
- 10 denotes a block bottom bag, for packaging moisture-sensitive bulk goods, such as plaster, washing powder or the like. serves and completely from one liquid and vapor-tight plastic composite film 11 is made.
- This plastic composite film 11 has a polyethylene film layer high density (HDPE film) and one with it standing layer of low density polyethylene (LDPE) on.
- the thickness d of the plastic composite film 11 is at least 50 ⁇ m and at most 300 ⁇ m. In the illustrated In the exemplary embodiment, the plastic composite film 11 has a thickness of 100 ⁇ m.
- the block bottom bag 10 shown becomes like a paper bag manufactured on a block bottom bag machine. It has four parallel ones Longitudinal outer edges 12, 13, 14 and 15, on which the long sides 16, 17, 18 and 19 collide. On the longitudinal outer edge 15 the narrow long side 19 has a protruding strip 20, glued to the free outer edge of the front long side 16 is, so that there is an approximately rectangular tube, like this in block-bottom bags is known per se.
- each of the narrow longitudinal sides 17 and 19 parallel to the longitudinal outer edges 12 and 13 or 14 and 15 inner fold 21 or 22, which divides the narrow long sides into two halves lie on top of each other when using the bag for packaging its front and rear long sides 16 and 18 laid flat on top of each other becomes.
- the block bottom bag shown is accordingly also designed as a gusseted bag.
- the narrow long sides are 17 and 19 and the wide, front and rear long sides 16 and 18 folded in pairs at the bottom 23 of the bag and bent inwards at right angles, so that the in Fig. 2 Folded lines, as shown is common with block-bottom bags.
- the overlapping one another Parts 24, 25, 26 and 27 which form the bottom 28 of the bag 10 are preferably with two parallel adhesive beads 30, 31 glued, the near the lower edges 32, 33 of the narrow Long sides 17, 19 run parallel to these and up to the pointed bottom flaps formed by the wide long sides 16, 18 34, 35 are sufficient (Fig. 3).
- the bottom 28 of the bag is with provided a cover 29 made of plastic film, the floor dimensions corresponds approximately and glued to the bottom 28 from below is.
- the cover 29 creates a smooth surface, which are fully printed and also with a handle or the like. can be provided.
- the filled bag can be glued at the top, but also welded or sewn. He is hereby universally applicable and can be used on all usual Filling systems for pourable or pourable packaging goods be used.
- the invention is not restricted to the described embodiment, but can also be used for gusseted bags be, the front and back wall including the folded Side walls are closed together.
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Abstract
Description
Die Erfindung betrifft einen Blockbodenbeutel aus Kunststofffolie, insbesondere zum Verpacken feuchtigkeitsempfindlicher Stoffe, mit einer Vorderwand, einer Rückwand und mit Seitenwänden, die mit der Vorderwand und der Rückwand Längsaußenkanten bilden, wobei der Blockboden durch Umfalten von Teilen der Vorderwand, der Rückwand und der Seitenwände entlang der mindestens vier Queraußenkanten an einer Stirnseite gebildet ist.The invention relates to a block-bottom bag made of plastic film, especially for packaging sensitive to moisture Fabrics with a front wall, a rear wall and with side walls, the longitudinal outer edges with the front wall and the rear wall form, the block bottom by folding over parts of the front wall, the back wall and the side walls along the least four transverse outer edges is formed on one end face.
Beutel, die für die Verpackung von feuchtigkeitsempfindlichen Stoffen, wie z.B. Baustoffen oder Waschpulver, verwendet werden, bestehen im allgemeinen aus dickem Papier oder aus Pappe, um ihre Formstabilität und ihre Stapelbarkeit zu gewährleisten. Um ein Eindringen von Feuchtigkeit zu verhindern, sind die Beutel mit einer wasser- oder dampfdichten Beschichtung versehen, die aus einer Kunststoffbeschichtung oder einer Lackschicht bestehen kann und die in geeigneter Weise mit dem Papierbeutel verbunden ist.Bags used for packaging moisture sensitive Fabrics such as Building materials or washing powder, generally consist of thick paper or cardboard to to ensure their dimensional stability and their stackability. Around The bags are designed to prevent moisture ingress provided with a waterproof or vapor-tight coating that consist of a plastic coating or a layer of lacquer can and the suitably connected to the paper bag is.
Verpackungen aus derartigen Verbundwerkstoffen sind nicht nur teuer herzustellen, sondern sie sind auch schwierig umweltgerecht zu entsorgen, da vor einer geeigneten Wiederverwertung die verschiedenen Materialien des Beutels voneinander getrennt werden müssen.Packaging made of such composite materials is not only expensive to manufacture, but they are also difficult environmentally friendly to dispose of, because before suitable recycling different materials of the bag are separated have to.
Die Herstellung von Blockbodenbeuteln erfolgt mit Hilfe von Blockbodenbeutelmaschinen im allgemeinen in der Weise, daß Zunächst aus einem Flachmaterial, wie Papier, ein z.B. als Seitenfaltenschlauch ausgebildeter Schlauch hergestellt wird, von dem einzelne Schlauchabschnitte abgetrennt werden, deren bodenseitigen Enden dann zur Bildung des Blockbodens als Eckeinschläge und Bodenseitenumschläge nach innen umgefalzt und verbunden werden (US-A 4 056 045). Dabei ist es bekannt, auf den Blockboden einen gesonderten Bodenzuschnitt, der aus einem rechteckigen Blatt aus Papier, Pappe oder Kunststoff besteht, aufzukleben, um einen festen und dichten Bodenverschluß des Beutels zu erreichen (DE-A 41 02 548; DE-A 19 39 591).Block bottom bags are manufactured with the help of Block bottom bag machines generally in such a way that First from a flat material such as paper, e.g. as a gusseted tube trained hose is manufactured from which individual tube sections are separated, the bottom side Then ends to form the block bottom as corner inserts and Bottom side envelopes are folded inwards and connected (US-A 4 056 045). It is known to one on the block floor separate bottom cut that is made up of a rectangular sheet Paper, cardboard or plastic is to be glued to one to achieve firm and tight bottom closure of the bag (DE-A 41 02 548; DE-A 19 39 591).
Weiterhin ist es bei Blockbodenbeuteln bekannt, deren Blockboden zur Verbesserung der Dichtigkeit mehrlagig auszuführen, wobei in den Blockboden ein Innenriegel eingearbeitet wird, der mit den Eckeinschlägen und den Bodenseitenumschlägen des Seitenfaltenschlauchs durch Verklebung verbunden wird (DE-U 87 06 305).Furthermore, it is known for block bottom bags, the block bottom to perform multilayer to improve the tightness, wherein in an internal ledger is worked into the block base, which Corner folds and the bottom side envelopes of the gusseted tube is connected by gluing (DE-U 87 06 305).
Zum Stand der Technik gehören auch Seitenfaltenflachbeutel aus Kunststoff, die aus einem einteiligen Kunststoffzuschnitt gefertigt sind, der zur Bildung der Vorderwand, der Rückwand und der beiden schmalen Seitenwände gefalzt wird, worauf der Beutel an seiner Längsnaht geschlossen wird. Hierbei wird die eine Seitenwand gegen die Vorderseite des Beutels umgefalzt und dann mit deren Innenseite verklebt (GB-A 2 254 065). Der Verschluß des gefüllten Beutels erfolgt durch Verschweißen seiner Vorder- und Rückwand im Endbereich des Beutels, wobei an einem Beutelende Tragegriffe vorgesehen werden.Side gusseted flat bags also belong to the prior art Plastic made from a one-piece plastic blank are to form the front wall, the rear wall and the is folded on both narrow side walls, whereupon the bag its longitudinal seam is closed. Here, one side wall folded against the front of the bag and then with the inside glued (GB-A 2 254 065). The closure of the filled bag is done by welding its front and Back wall in the end area of the bag, with one end of the bag Carrying handles are provided.
Es sind auch Blockbodenbeutel bekannt, die aus einem mehrlagigen Papier- und Folienmaterial, also einem Verbundmaterial, wie z.B. kaschiertem Papier oder polypropylenbeschichtetem Papier gefertigt werden (EP-A-0 298 252). Bei der Herstellung dieser Beutel werden zur Bildung des Blockbodens die Beutelwandungen an den vier Rechteckseiten des Beutels so gefaltet, daß zwei einander gegenüberliegende Bodenabschnitte gebildet werden, die von zwei an den beiden anderen Beutelseiten durch Falten gebildeten trapezförmigen Bodenklappen überdeckt werden. Dabei erfolgt eine Verklebung der Bodenabschnitte und der Bodenklappen in der Weise, daß auf Teilbereiche der einen Bodenklappe und der beiden Bodenabschnitte ein Dispersionskleber und außerdem auf den Überdeckungsbereichen der Bodenklappen ein Heißkleber in Form schmaler Leimraupen aufgebracht wird, so daß beim Umlegen der Bodenklappen gegen die Bodenabschnitte mit den Klebeverbindungen eine doppelte Abdichtung der sich überdeckenden Bereiche der Bodenabschnitte und der Bodenklappen erzielt wird. Block-bottom bags are also known which consist of a multilayer Paper and film material, i.e. a composite material such as laminated paper or polypropylene-coated paper (EP-A-0 298 252). When making these bags the bag walls on the four rectangle sides of the bag folded so that two face each other opposite bottom sections are formed by two trapezoidal formed on the other two sides of the bag by folds Floor flaps are covered. There is a Gluing the bottom sections and the bottom flaps in the Way that on partial areas of a bottom flap and the two Floor sections a dispersion adhesive and also on the overlap areas the bottom flaps a hot glue in the form of narrower Glue beads is applied, so that when folding the bottom flaps against the floor sections with the adhesive connections double sealing of the overlapping areas of the floor sections and the bottom flap is achieved.
Aus der US-A-4 856 656 ist eine auch für Beutel verwendbare Mehrschichtfolie mit insgesamt drei Schichten bekannt, die aus Niederdruck-Polyethylen (LDPE) und Hochdruck-Polyethylen (HDPE) bestehen können. Die US-A- 5 344 714 offenbart eine Mehrschichtfolie mit einer Schicht aus linearem Niederdruck-Polyethylen (LDPE) und einer weiteren Schicht aus Hochdruck-Polyethylen (HDPE), die auch direkt als Schlauch extrudiert werden kann. Aus der US-A 5 401 546 schließlich ist ein sackartiges Behältnis zum Aufbewahren und Entsorgen von Schmierfett und -öl bekannt, das aus mehreren Abschnitten einer Verbundfolie aus Niederdruck-Polyethylen, linearem Niederdruck-Polyethylen, Hochdruck-Polyethylen und Polyester besteht, die zur Bildung des schlauchförmigen Behältnisses miteinander verschweißt sind.From US-A-4 856 656 is also usable for bags Multi-layer film with a total of three layers known from Low pressure polyethylene (LDPE) and high pressure polyethylene (HDPE) can exist. US-A-5 344 714 discloses a multilayer film with a layer of linear low pressure polyethylene (LDPE) and another layer of high pressure polyethylene (HDPE), which can also be extruded directly as a hose. Out finally, US-A 5 401 546 is a bag-like container for Storage and disposal of grease and oil known that from several sections of a composite film made of low-pressure polyethylene, linear low pressure polyethylene, high pressure polyethylene and polyester is used to form the tubular Container are welded together.
Aufgabe der Erfindung ist es, einen Blockbodenbeutel der eingangs genannten Art zu schaffen, der sowohl feuchtigkeitsabweisend und leicht wiederverwertbar ist als auch eine hohe FormStabilität und Formgenauigkeit hat und der einfach und kostengünstig maschinell hergestellt und gefaltet werden kann.The object of the invention is a block bottom bag of the beginning to create the type mentioned that is both moisture-repellent and is easily recyclable as well as high dimensional stability and has shape accuracy and the simple and inexpensive by machine can be made and folded.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Beutel vollständig aus einer flüssigkeits- und dampfdichten, eine Polyethylenfolienschicht hoher Dichte (HDPE) und eine Polyethylenfolienschicht niedriger Dichte (LDPE) aufweisenden Kunststoffverbundfolie besteht, die eine Dicke von mindestens 50 µm und höchsten 300 µm aufweist, wobei der Beutel an seiner Längsnaht verklebt ist. Vorzugsweise ist dabei der mit dem Blockboden versehene Kunststoffbeutel, wie an sich bekannt, als Seitenfaltenbeutel ausgebildet.This object is achieved in that the bag completely made of a liquid and vapor tight, one High density polyethylene film layer (HDPE) and a polyethylene film layer low density (LDPE) plastic composite film there is a thickness of at least 50 microns and has a maximum of 300 microns, the bag on its longitudinal seam is glued. Preferably, the one with the block bottom provided plastic bags, as known per se, as gusseted bags educated.
Der in der vorgenannten Weise ausgebildete Blockbodenbeutel hat bei hoher Festigkeit gute feuchtigkeitsabweisende Eigenschaften, so daß in ihm empfindliche Güter zuverlässig gegen Zutritt von Feuchtigkeit verpackt werden können. In seiner Ausführung als Blockbodenbeutel ermöglicht er auch einen dichten Bodenverschluß. Zugleich ist er im Füllzustand gut und raumsparend stapelbar. Da der Beutel in seiner Gesamtheit nur aus einem einzigen Material, nämlich Polyethylenmaterial, besteht, läßt er sich nach Gebrauch direkt der Kunststoffwiederverwertung zuführen. Polyethylen hoher Dichte (HDPE) und Polyethylen niedriger Dichte (LDPE) werden beide zu den Polyolefinen gerechnet und sind in ihrer chemischen Zusammensetzung so ähnlich, daß eine gemeinsame Wiederverwertung problemlos möglich ist.Has the block bottom bag formed in the aforementioned manner good moisture-repellent properties with high strength, so that sensitive goods in it reliably against access by Moisture can be packed. In its execution as Block bottom bags also enable a tight bottom seal. At the same time, when filled, it can be stacked well and saves space. Since the bag as a whole consists of only one Material, namely polyethylene material, it can be Send for recycling directly after use. High density polyethylene (HDPE) and low density polyethylene (LDPE) are both classed as polyolefins and are in their chemical composition so similar that a common one Recycling is easily possible.
Um einen festen und dichten Bodenverschluß des Blockbodenbeutels zu erreichen, empfiehlt es sich, die einander überlappenden Teile des Blockbodens im Bodenbereich miteinander zu verkleben. Vorzugsweise wird der Blockboden mit einer Abdeckung aus Kunststoffolie versehen, die den Abmessungen des Blockbodens etwa entspricht und von außen auf den Blockboden aufgeklebt wird. Hierdurch erhält der Blockbodenbeutel eine zusätzliche Steifigkeit und weist an seiner Bodenseite eine homogene Fläche auf, die leicht bedruckt werden kann.To ensure that the block-bottom bag is sealed firmly and tightly To achieve this, it is recommended to overlap each other Glue parts of the block floor together in the floor area. The block bottom is preferably covered with a plastic film cover provided that the dimensions of the block floor about corresponds and is glued onto the block floor from the outside. This gives the block-bottom bag additional rigidity and has a homogeneous surface on its bottom side, that can be easily printed.
Besonders vorteilhaft ist es, wenn der Boden des Blockbodenbeutels mit zwei zueinander parallelen Klebstoffraupen verklebt ist, die mindestens eine Länge haben, die der Breite einer Längsseite entspricht, und wenn die Abdeckung aus Kunststoffolie vollflächig mit dem Boden verklebt ist. Dadurch können die Laschen des Blockbodens mit wenig Klebstoff miteinander verklebt werden. Durch die vollflächige Verklebung der Abdeckung mit dem Boden ist eine besonders gute Abdichtung gewährleistet.It is particularly advantageous if the bottom of the block-bottom bag glued with two parallel adhesive beads is at least one length equal to the width of one Long side corresponds, and if the cover is made of plastic film is fully glued to the floor. This allows the tabs of the block bottom glued together with a little adhesive will. Through the full-surface gluing of the cover with the A particularly good seal is guaranteed on the floor.
Der Klebstoff ist vorzugsweise ein Heiß-Schmelzkleber, der besonders einfach zu verarbeiten ist, eine hohe Stabilität der Klebnähte gewährleistet und durch sein großes Volumen die Nähte, insbesondere im Bodenbereich, besonders gut abdichtet.The adhesive is preferably a hot melt adhesive, which is particularly is easy to process, high stability of the Guaranteed adhesive seams and, thanks to its large volume, the seams, seals particularly well in the floor area.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung und der Zeichnung, in der eine bevorzugte Ausführungsform der Erfindung an einem Beispiel näher erläutert ist. Es zeigt:
- Fig. 1
- zeigt einen oben offenen Blockbodenbeutel nach der Erfindung in einer perspektivischen Darstellung;
- Fig. 2
- zeigt den Blockbodenbeutel nach Fig. 1 in einer Draufsicht und
- Fig. 3
- zeigt den Boden des Blockbodenbeutels im auseinandergeklappten Zustand in einer Draufsicht.
- Fig. 1
- shows an open-topped block bottom bag according to the invention in a perspective view;
- Fig. 2
- shows the block bottom bag of FIG. 1 in a plan view and
- Fig. 3
- shows the bottom of the block bottom bag in the unfolded state in a plan view.
In den Zeichnungen ist mit 10 ein Blockbodenbeutel bezeichnet,
der zum Verpacken von feuchtigkeitsempfindlichen Schüttgütern,
wie Gips, Waschpulver od.dgl. dient und vollständig aus einer
flüssigkeits- und dampfdichten Kunststoffverbundfolie 11 besteht.
Diese Kunststoffverbundfolie 11 weist eine Polyethylenfolienschicht
hoher Dichte (HDPE-Folie) und eine hiermit im Verbund
stehende Polyethylenfolienschicht niedriger Dichte (LDPE-Folie)
auf. Die Dicke d der Kunststoffverbundfolie 11 beträgt
mindestens 50 µm und höchstens 300 µm. Bei dem dargestellten
Ausführungsbeispiel hat die Kunststoffverbundfolie 11 eine Dicke
von 100 µm. In the drawings, 10 denotes a block bottom bag,
for packaging moisture-sensitive bulk goods,
such as plaster, washing powder or the like. serves and completely from one
liquid and vapor-tight
Der dargestellte Blockbodenbeutel 10 wird wie ein Papierbeutel
auf einer Blockbodenbeutelmaschine gefertigt. Er hat vier parallele
Längsaußenkanten 12, 13, 14 und 15, an denen die Längsseiten
16, 17, 18 und 19 zusammenstoßen. An der Längsaußenkante 15
hat die schmale Längsseite 19 einen überstehenden Streifen 20,
der mit dem freien Außenrand der vorderen Längsseite 16 verklebt
ist, so daß sich ein etwa rechteckiger Schlauch ergibt, wie dies
bei Blockbodenbeuteln an sich bekannt ist. Außerdem hat jede der
schmalen Längsseiten 17 und 19 einen parallel zu den Längsaußenkanten
12 und 13 bzw. 14 und 15 verlaufenden Innenfalz 21 bzw.
22, der die schmalen Längsseiten in zwei Hälften unterteilt, die
aufeinanderliegen, wenn der Beutel zu Verpackungszwecken mit
seinen vorderen und hinteren Längsseiten 16 und 18 flach aufeinandergelegt
wird. Der dargestellte Blockbodenbeutel ist demgemäß
zugleich als Seitenfaltenbeutel ausgeführt.The
Wie bei Blockbodenbeuteln üblich, sind die schmalen Längsseiten
17 und 19 und die breiten, vorderen und hinteren Längsseiten 16
und 18 am unteren Ende 23 des Beutels paarweise nach innen gefaltet
und rechtwinklig nach innen umgebogen, so daß die in Fig.
2 in strichierten Linien dargestellte Faltung entsteht, wie sie
bei Blockbodenbeuteln üblich ist. Die einander überlappenden
Teile 24, 25, 26 und 27, die den Boden 28 des Beutels 10 bilden,
sind vorzugsweise mit zwei einander parallelen Klebstoffraupen
30, 31 verklebt, die nahe der Unterkanten 32, 33 der schmalen
Längsseiten 17, 19 parallel zu diesen verlaufen und die bis auf
die von den breiten Längsseiten 16, 18 gebildeten Spitzbodenlaschen
34, 35 reichen (Fig. 3).As usual with block-bottom bags, the narrow long sides are
17 and 19 and the wide, front and rear
Um zu verhindern, daß das Verpackungsgut, beispielsweise Waschpulver,
Mehl oder Gips zwischen die Falten der nach innen geklappten
Teile des Bodens eindringt, können die einander überlappenden
Teile des Bodens auch vollflächig miteinander verklebt
sein. Wie in Fig. 2 gezeigt, ist der Boden 28 des Beutels mit
einer Abdeckung 29 aus Kunststoffolie versehen, die den Bodenabmessungen
in etwa entspricht und von unten auf den Boden 28 aufgeklebt
ist. Die Abdeckung 29 schafft eine glatte Oberfläche,
die vollflächig bedruckt und auch mit einem Handgriff od. dgl.
versehen werden kann.To prevent the packaged goods, e.g. washing powder,
Flour or plaster between the folds of the folded inside
Penetrating parts of the soil can overlap each other
Parts of the floor also glued together over the entire surface
be. As shown in Fig. 2, the
Zum Verschließen kann der gefüllte Beutel am oberen Rand verklebt, aber auch verschweißt oder aber vernäht werden. Er ist hierdurch universell einsetzbar und kann auf allen üblichen Abfüllanlagen für riesel- oder schüttfähige Verpackungsgüter verwendet werden.To close, the filled bag can be glued at the top, but also welded or sewn. He is hereby universally applicable and can be used on all usual Filling systems for pourable or pourable packaging goods be used.
Die Erfindung ist nicht auf die beschriebene Ausführungsform beschränkt, sondern kann auch bei Seitenfaltenbeuteln verwendet werden, deren Vorder- und Rückwand unter Einschluß der eingefalteten Seitenwände miteinander verschlossen sind.The invention is not restricted to the described embodiment, but can also be used for gusseted bags be, the front and back wall including the folded Side walls are closed together.
Claims (7)
- Block-bottom bag made of plastic film, in particular for packing moisture-sensitive materials, with a front wall, a rear wall and with side walls which, with the front wall and the rear wall, form longitudinal external edges, the block bottom being formed at one end face by folding over parts of the front wall, of the rear wall and of the side walls along the at least four transverse external edges, characterized in that the bag (10) consists entirely of a liquid-tight and vapour-tight multilayer plastic film (11) which has a polyethylene film layer of high density (HDPE) and a polyethylene film layer of low density (LDPE) and which has a thickness (d) of at least 50 µm and at most 300 µm, the bag being adhesively bonded at its longitudinal seam.
- Block-bottom bag according to Claim 1, characterized in that it is a satchel bag.
- Block-bottom bag according to Claim 1 or 2, characterized in that the mutually overlapping parts (24, 25, 26, 27) of the block bottom are adhesively bonded to one another in the bottom region.
- Block-bottom bag according to one of Claims 1 to 3, characterized in that the block bottom (28) is provided with a covering (29) made of plastic film, which corresponds approximately to the dimensions of the block bottom (28) and is adhesively bonded onto the block bottom (28) from outside.
- Block-bottom bag according to Claim 4, characterized in that the overlapping parts (24, 25, 26, 27) of the block bottom (28) are adhesively bonded by two mutually parallel adhesive beads (30, 31) which have at least a length which corresponds to the width of a longitudinal side (19), and in that the covering (29) is adhesively bonded to the block bottom (28) over the entire surface.
- Block-bottom bag according to one of Claims 1 to 5, characterized in that the mutually overlapping parts (24, 25, 26, 27) of the block bottom (28) are adhesively bonded to one another over the entire surface.
- Block-bottom bag according to one of Claims 1 to 6, characterized in that the adhesive is a hot-melt adhesive.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9315795U | 1993-10-16 | ||
| DE9315795U DE9315795U1 (en) | 1993-10-16 | 1993-10-16 | Bags, in particular for packaging moisture-sensitive substances |
| PCT/DE1994/001225 WO1995011169A1 (en) | 1993-10-16 | 1994-10-14 | Bag, in particular for packaging humidity-sensitive substances |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0722408A1 EP0722408A1 (en) | 1996-07-24 |
| EP0722408B1 true EP0722408B1 (en) | 1998-09-02 |
Family
ID=6899503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94929478A Expired - Lifetime EP0722408B1 (en) | 1993-10-16 | 1994-10-14 | Bag, in particular for packaging humidity-sensitive substances |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5755514A (en) |
| EP (1) | EP0722408B1 (en) |
| AT (1) | ATE170485T1 (en) |
| DE (2) | DE9315795U1 (en) |
| DK (1) | DK0722408T3 (en) |
| WO (1) | WO1995011169A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015103824B4 (en) | 2015-03-16 | 2018-09-13 | Wernfried Voelker | Paper bag and related manufacturing process |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6125578A (en) | 1994-05-03 | 2000-10-03 | Southpac Trust International, Inc. | Floral sleeve having expandable sidewalls |
| US6401388B2 (en) | 1999-07-23 | 2002-06-11 | Southpac Trust Int'l. Inc. | Method of containing a pot or floral grouping in a sleeve with expandable sidewalls |
| JPH11222244A (en) * | 1998-02-02 | 1999-08-17 | Hosokawa Yoko:Kk | Pharmaceutical and medical gusset bag |
| US7118906B2 (en) * | 1999-03-31 | 2006-10-10 | Council Of Scientific & Industrial Research | Process for removal of polycyclic aromatic hydrocarbons in wastewater and other contaminated sites |
| US6395534B1 (en) * | 1999-03-31 | 2002-05-28 | Council Of Scientific And Industrial Research | White rot-lignin-modifying fungus Flavodon flavus and a process for removing dye from dye containing water or soil using the fungus |
| US6385906B2 (en) | 1999-07-23 | 2002-05-14 | Southpac Trust Int'l. Inc. | Floral sleeve having expandable sidewalls |
| US6746388B2 (en) | 2001-01-12 | 2004-06-08 | Scholle Corporation | Method of designing a standup bag |
| US6695757B2 (en) | 2001-01-12 | 2004-02-24 | Scholle Corporation | Method of manufacturing a standup bag |
| US6783277B2 (en) | 2001-01-12 | 2004-08-31 | Scholle Corporation | Stand up bag |
| WO2003024821A1 (en) * | 2001-09-19 | 2003-03-27 | Polymer Packaging, Inc. | Flat bottom, stand up bag and method of manufacturing the same |
| US6921204B2 (en) | 2002-02-07 | 2005-07-26 | Scholle Corporation | Internal brace for a standup flexible container |
| DK176261B1 (en) * | 2003-02-04 | 2007-05-07 | Coloplast As | Ophthalmic packaging |
| ITBS20050072A1 (en) * | 2005-06-14 | 2006-12-15 | D & C S R L | COMPOSITE MATERIAL, IN PARTICULAR TO CARRY OUT SHOPPING BAGS, BAGS, BAGS, CONTAINERS, BOXES AND SIMILAR FOR THE PACKAGING OR TRANSPORT OF ITEMS |
| US20110211775A1 (en) * | 2010-03-01 | 2011-09-01 | Conwed Plastics Llc | Mesh bag for automated filling and method for making same |
| WO2013014231A1 (en) * | 2011-07-28 | 2013-01-31 | Hollister Incorporated | An ostomy sealing member package and an ostomy sealing member therefore |
| US9096347B2 (en) | 2012-03-20 | 2015-08-04 | Berry Plastics Corporation | Stand-up Package |
| US20140363105A1 (en) * | 2013-06-07 | 2014-12-11 | Berry Plastics Corporation | Standup bag |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2996238A (en) * | 1957-11-12 | 1961-08-15 | Crown Zellerbach Corp | Pasted container |
| CH480988A (en) * | 1967-09-01 | 1969-11-15 | Hesser Ag Maschf | Bag with a rectangular cross-section with a bottom closure |
| US3485438A (en) * | 1968-06-19 | 1969-12-23 | Union Camp Corp | Bonding arrangement for plies of multiply bags |
| DE1939591A1 (en) * | 1969-08-04 | 1971-02-25 | Windmoeller & Hoelscher | Sack or bag with glued cross or block bottom and process for its manufacture |
| CH595982A5 (en) * | 1975-08-28 | 1978-02-28 | Sig Schweiz Industrieges | |
| DE3123150A1 (en) * | 1981-06-11 | 1982-12-30 | Hans 4000 Düsseldorf Lissner | Container made of flexible material for storing and transporting bulk products |
| US4808421A (en) * | 1987-02-24 | 1989-02-28 | Packaging Concepts, Inc. | Formed polymer film package for microwave cooking |
| DE8706305U1 (en) * | 1987-05-02 | 1987-06-19 | Bischof Und Klein Gmbh & Co, 4540 Lengerich | Block bottom bags |
| DE3719085A1 (en) * | 1987-06-06 | 1988-12-15 | Fr Noltemeyer Gmbh | BLOCK OR CROSSBODY BAG |
| DE4102548A1 (en) * | 1991-01-29 | 1992-07-30 | Kochsiek Maschinenbau Soltau G | Side-folded bag for tubing - has base of folded material, and connecting strips |
| GB2254065A (en) * | 1991-03-23 | 1992-09-30 | Scott Robertson Limited | A flexible bag. |
-
1993
- 1993-10-16 DE DE9315795U patent/DE9315795U1/en not_active Expired - Lifetime
-
1994
- 1994-10-14 WO PCT/DE1994/001225 patent/WO1995011169A1/en active IP Right Grant
- 1994-10-14 DE DE59406850T patent/DE59406850D1/en not_active Expired - Fee Related
- 1994-10-14 DK DK94929478T patent/DK0722408T3/en active
- 1994-10-14 AT AT94929478T patent/ATE170485T1/en active
- 1994-10-14 EP EP94929478A patent/EP0722408B1/en not_active Expired - Lifetime
- 1994-10-14 US US08/612,971 patent/US5755514A/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015103824B4 (en) | 2015-03-16 | 2018-09-13 | Wernfried Voelker | Paper bag and related manufacturing process |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE170485T1 (en) | 1998-09-15 |
| DE9315795U1 (en) | 1994-01-05 |
| WO1995011169A1 (en) | 1995-04-27 |
| DK0722408T3 (en) | 1999-06-07 |
| DE59406850D1 (en) | 1998-10-08 |
| US5755514A (en) | 1998-05-26 |
| EP0722408A1 (en) | 1996-07-24 |
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