EP1607339B1 - Vented plastic bag - Google Patents

Vented plastic bag Download PDF

Info

Publication number
EP1607339B1
EP1607339B1 EP04012528A EP04012528A EP1607339B1 EP 1607339 B1 EP1607339 B1 EP 1607339B1 EP 04012528 A EP04012528 A EP 04012528A EP 04012528 A EP04012528 A EP 04012528A EP 1607339 B1 EP1607339 B1 EP 1607339B1
Authority
EP
European Patent Office
Prior art keywords
packaging container
region
wall
sealed
glued
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04012528A
Other languages
German (de)
French (fr)
Other versions
EP1607339A1 (en
Inventor
Jürgen Heinemeier
Burkkhard Lückmann
Günther Reimann
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.)
RKW SE
Original Assignee
Rheinische Kunststoffwerke GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34925147&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1607339(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Rheinische Kunststoffwerke GmbH filed Critical Rheinische Kunststoffwerke GmbH
Priority to AT04012528T priority Critical patent/ATE390364T1/en
Priority to DE502004006665T priority patent/DE502004006665D1/en
Priority to EP04012528A priority patent/EP1607339B1/en
Priority to ES04012528T priority patent/ES2305612T3/en
Priority to PL04012528T priority patent/PL1607339T3/en
Priority to SI200430749T priority patent/SI1607339T1/en
Priority to PT04012528T priority patent/PT1607339E/en
Priority to DK04012528T priority patent/DK1607339T3/en
Priority to DE202005021161U priority patent/DE202005021161U1/en
Priority to EA200602128A priority patent/EA010143B1/en
Priority to US11/138,641 priority patent/US7927015B2/en
Priority to BRPI0510651A priority patent/BRPI0510651B1/en
Priority to JP2007513810A priority patent/JP2008500241A/en
Priority to MXPA06013132A priority patent/MXPA06013132A/en
Priority to CNB2005800167600A priority patent/CN100532215C/en
Priority to CA2568289A priority patent/CA2568289C/en
Priority to PCT/EP2005/005719 priority patent/WO2005115856A1/en
Publication of EP1607339A1 publication Critical patent/EP1607339A1/en
Priority to NO20064965A priority patent/NO344897B1/en
Priority to IL179247A priority patent/IL179247A/en
Publication of EP1607339B1 publication Critical patent/EP1607339B1/en
Application granted granted Critical
Priority to CY20081100662T priority patent/CY1110367T1/en
Priority to US13/038,458 priority patent/US8371752B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/01—Ventilation or drainage of bags
    • 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

Definitions

  • the present invention relates to flexible plastic packaging containers.
  • Plastic packaging is characterized by the fact that they are lightweight, stable, relatively dense, in particular water and airtight, and thereby inexpensive. They are therefore used extensively in the packaging of free-flowing solids in very many fields, such as e.g. in the chemical industry (granules etc.), in the garden sector (potting soil, fertilizer) and in the food industry.
  • the packaging container is made of an endless film web, usually directly before filling.
  • Either the endless film web is produced as a tube, or it is done by rounding and welding or gluing in the longitudinal direction, first, the formation of a tube of a flat film.
  • the hose is fed to the bottling plant, where a first welding or adhesive seam forms the bottom in the transverse direction and after filling of the contents the container is closed at the top by a second welding or gluing seam in the transverse direction.
  • block bottom bags To avoid these problems, it is known in so-called block bottom bags to provide a valve in the soil, through which the overpressure in the Bottling escapes.
  • block bottom bags and especially those with elaborate valve constructions are not desirable for reasons of cost for comparatively inexpensive products such as building materials.
  • the EP 444 261 describes flexible packaging containers having the features of the preamble of claim 1, in the form of a bag or bag, in which a vent by perforations in a region of the container takes place in which this is formed in two layers.
  • each perforations are provided in the inner and the outer wall, wherein the perforations in the outer wall should have a smaller cross-sectional area than that in the inner wall.
  • the venting then takes place in that an overpressure builds up between the inner and the outer wall, which is intended to allow a controlled outflow.
  • a filter is required between the inner and outer walls in order to prevent the contents from escaping.
  • these immediately after the escape of pressure overlying perforations form an inlet for air, water and other impurities.
  • the not pre-published WO 2005/092724 relates to packaging containers with an inner air-permeable layer and an outer air-tight and watertight layer in which an area between the inner and outer wall allows venting in the filling by the longitudinal seam in this area over 10 to 50% is open.
  • An overpressure relief of the filled and closed bags is neither addressed nor possible.
  • the interruption of the seam should be firmly closed in the stacked state by the weight of the placed containers.
  • DE 195 38 146 also relates to a venting during filling and provides for this purpose permanent openings of the longitudinal seam.
  • Overpressure ventilation filled and closed bags is only possible, as long as they are not stacked
  • the open longitudinal seam in turn allows moisture to penetrate and also escape of filling material.
  • US 5,922,162 describes bags with openings in the area of the upper closure seam, which are connected via a labyrinthine way to the interior of the container. This type of closure is complex.
  • CH 494 169 Containers are described as having a vent during filling, with release media resulting in the interruption of sutures. To ensure against ingress of contaminants and leakage of filling the known long ways between the openings to the interior and to the outside are necessary.
  • Suitable packaging containers for the purposes of the present invention include, inter alia, FFS hoses, block bags, open gusseted and / or flax sacks, valve box sacks (glued and welded), crossfloor sacks, automatic flat film, etc., in particular FFS packaging.
  • packaging containers are particularly preferred in which the production takes place from a flat film, so that an overlap exists between the outer edges of the film web in the longitudinal direction as a result of production, which can serve as a region between the inner and outer walls. In these packaging containers, a separate training this area is therefore not necessary.
  • the area between the inner and outer wall can be formed by applying a separate film by means of welding or adhesive bond on the film forming the packaging container.
  • one or both welded or adhesive seams or seams are designed to be gas-permeable in the transverse direction.
  • a preferred way to form the gas permeability is to the surface of the film at the points to be joined or in total by applying a separating medium or by corona treatment to change so that the compound has a reduced strength.
  • the order or the treatment can be unilateral or multi-sided, full-surface or partial.
  • Suitable media are all media that prevent welding or bonding of the plastic film, such as oils, fats, paints, coatings, powdered solids, etc.
  • the weakened connection seam ensures a controlled gas outlet for reducing an overpressure occurring during or after the filling.
  • the use of filters or the like, which were required in the prior art to prevent leakage of contents, is not necessary because the openings in the inner wall are covered by the dense, outer wall.
  • leakage even of very fine particles is almost impossible. This is due to the fact that adhesion forces act between the two films, which are only partially firmly bonded, which bring about a certain adhesion even without a firm connection by welding or gluing. Only if the adhesion forces are overcome by a pressure difference, such as the overpressure which develops during or after filling, does the seam open and allow the overpressure to escape.
  • the openings in the inner wall are preferably perforations formed by needling. But it is also possible to provide slots or other gas passage permitting openings.
  • the openings, in particular for very fine products, are preferably arranged in such a way that the greatest possible distance from the openings to the (partial) region of the connecting seam results, which enables the gas to escape.
  • a preferred embodiment therefore has openings which are arranged centrally in the longitudinal direction, and the gas outlet permitting partial region is formed in one or both transverse seams.
  • spacers may be provided between the inner and the outer wall.
  • the preparation of the packaging containers according to the invention is essentially the same as that of not with a positive pressure vent provided containers. It is only necessary prior to the attachment of at least one seam, the additional step of a surface treatment, through which in the subsequent production of the seam, a gas permeability of the same is achieved at least in some areas.
  • FIG. 1 shows a side view of an out of the invention FFS packaging.
  • FIG. 2 shows a section along the line AA in FIG. 1 ,
  • FIG. 1 is an FFS tube 1 to see, which is made of a plastic film by this was folded in the longitudinal direction so that between the two outer edges of the film 2 and 3, a region 4 with an inner wall 5 and an outer wall 6 (see. FIG. 2 ) is formed.
  • Two weld seams 7 and 8 in the longitudinal direction fix the outer edges 2 and 3 of the film with the underlying or overlying film, so that a hose is formed.
  • the packaging container is provided with a bottom seam 9 before filling and after filling with a weld 10 which closes the package.
  • the outer edge 2 of the film is provided on the later to the interior 14 of the container 1 side facing with a release coating 11, which causes the weld 7 allows a gas outlet. Furthermore, along the outer edge 3 in the longitudinal direction perforations 12 and embossments 13 are attached.
  • the gas will enter the region 4 through the perforations 12 and is discharged from there through the gas-permeable weld seam 7 to the outside. Any infiltration of contents in the area 4 is harmless, as this can hardly escape through the weld. Also, an ingress of contaminants in the interior 14 is not to be feared, since after the reduction of the overpressure, the inner and the outer film are close to each other and are fixed by adhesive forces in this position.
  • FIG. 3 shows an FFS packaging with a gas-permeable seam. Identical parts are marked with the same reference numbers.
  • FIG. 3 recognizes a FFS tube 1, in which instead of the release coating, a corona-treated portion 11 'is provided.
  • the transverse welds 9 and 10 thereby allow at the point where the area 11 'is located, a gas outlet at overpressure.
  • the openings are formed as perforations 12 only in the middle of the bag. Spacers are not provided here.
  • This packaging is particularly suitable for very finely divided contents, since there is a particularly long way from the openings to the area of the gas outlet. As a result, leakage of filling material can be virtually completely prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Abstract

The flexible plastics packaging bag has a single wall enclosing a space (14) for a substance which may give off gas. The gas pressure relief system consists of a double-wall zone with holes (12) for pressure relief in the inner wall (5). Molded projections may act as spacers for the outer wall (6) defining a gas escape zone (4). The edges (2,3) of the outer wall are held in place by welded or glued seams (7,8). A section of welded seam contains a separating material (11) and may give way to release the gas if the pressure builds up.

Description

Die vorliegende Erfindung betrifft flexible Verpackungsbehältnisse aus Kunststoff.The present invention relates to flexible plastic packaging containers.

Kunststoffverpackungen zeichnen sich dadurch aus, dass sie leicht, stabil, verhältnismäßig dicht, insbesondere wasser- und luftdicht, und dabei kostengünstig sind. Sie finden daher umfangreichen Einsatz bei der Verpackung von rieselfähigen Feststoffen in sehr vielen Bereichen, wie z.B. bei in der chemischen Industrie (Granulate etc.), im Gärtnereibereich (Blumenerde, Dünger) und im Lebensmittelbereich.Plastic packaging is characterized by the fact that they are lightweight, stable, relatively dense, in particular water and airtight, and thereby inexpensive. They are therefore used extensively in the packaging of free-flowing solids in very many fields, such as e.g. in the chemical industry (granules etc.), in the garden sector (potting soil, fertilizer) and in the food industry.

Aus Kostengründen sind sogenannte FFS-Schläuche bevorzugt. Bei diesen wird das Verpackungsbehältnis aus einer Endlos-Folienbahn, meist direkt vor der Befüllung, erstellt. Entweder wird die Endlos-Folienbahn als Schlauch hergestellt, oder es erfolgt durch Rundlegen und Verschweißen oder Verkleben in Längsrichtung zunächst die Ausbildung eines Schlauches aus einer Flachfolie. Der Schlauch wird der Abfüllanlage zugeführt, wo eine erste Schweiß- oder Klebenaht in Querrichtung den Boden bildet und nach Einfüllen des Füllgutes das Behältnis durch eine zweite Schweiß- oder Klebenaht in Querrichtung oben verschlossen wird.For cost reasons, so-called FFS hoses are preferred. In these, the packaging container is made of an endless film web, usually directly before filling. Either the endless film web is produced as a tube, or it is done by rounding and welding or gluing in the longitudinal direction, first, the formation of a tube of a flat film. The hose is fed to the bottling plant, where a first welding or adhesive seam forms the bottom in the transverse direction and after filling of the contents the container is closed at the top by a second welding or gluing seam in the transverse direction.

Bei der Verpackung von Baustoffen, welche häufig hygroskopisch sind, kommt es besonders auf den Schutz des Inhalts vor Feuchtigkeit an. Andererseits werden solche Güter bisher noch vielfach in Papierbehältnissen abgefüllt, da sich gerade bei Zement und ähnlichen Stoffen während und nach der Abfüllung ein Überdruck in der Verpackung bildet, der durch Papier entweichen kann, jedoch bei den luftdichten Kunststoffverpackungen nach dem Verschließen verbleibt.In the packaging of building materials, which are often hygroscopic, it is particularly important to protect the contents from moisture. On the other hand, such goods are still often bottled in paper containers, since just with cement and similar materials during and after bottling an overpressure forms in the package, which can escape through paper, but remains in the airtight plastic packaging after closing.

Zur Vermeidung dieser Probleme ist es bei sogenannten Klotzbodensäcken bekannt, in dem Boden ein Ventil vorzusehen, durch das der Überdruck bei der Abfüllung entweicht. Klotzbodensäcke und besonders solche mit aufwändigen Ventilkonstruktionen sind jedoch aus Kostengründen für vergleichsweise preiswerte Füllgüter wie Baustoffe nicht erwünscht.To avoid these problems, it is known in so-called block bottom bags to provide a valve in the soil, through which the overpressure in the Bottling escapes. However, block bottom bags and especially those with elaborate valve constructions are not desirable for reasons of cost for comparatively inexpensive products such as building materials.

Die EP 444 261 beschreibt flexible Verpackungsbehältnisse mit den Merkmale des Oberbegriff des Anspruchs 1, in Form eines Sackes oder Beutels, bei denen eine Entlüftung durch Perforationen in einem Bereich des Behältnisses erfolgt, in welchem dieses zweilagig ausgebildet ist. Hierzu sind in der inneren und der äußeren Wandung jeweils Perforationen vorgesehen, wobei die Perforationen in der äußeren Wandung eine geringere Querschnittsfläche haben sollen, als die in der inneren Wandung. Die Entlüftung erfolgt dann dadurch, dass sich zwischen der inneren und der äußeren Wandung ein Überdruck aufbaut, der ein kontrolliertes Ausströmen ermöglichen soll. Der Schrift lässt sich entnehmen, dass bei sehr feinen Füllgütern ein Filter zwischen innerer und äußerer Wandung benötigt wird, um ein Austreten des Füllgutes zu verhindern. Außerdem bilden diese nach dem Entweichen des Überdruckes unmittelbar übereinander liegenden Perforationen eine Eintrittsöffnung für Luft, Wasser und andere Verunreinigungen.The EP 444 261 describes flexible packaging containers having the features of the preamble of claim 1, in the form of a bag or bag, in which a vent by perforations in a region of the container takes place in which this is formed in two layers. For this purpose, each perforations are provided in the inner and the outer wall, wherein the perforations in the outer wall should have a smaller cross-sectional area than that in the inner wall. The venting then takes place in that an overpressure builds up between the inner and the outer wall, which is intended to allow a controlled outflow. It can be seen from the document that for very fine products, a filter is required between the inner and outer walls in order to prevent the contents from escaping. In addition, these immediately after the escape of pressure overlying perforations form an inlet for air, water and other impurities.

Die nicht vorveröffentlichte WO 2005/092724 betrifft Verpackungsbehältnisse mit einer inneren luftdurchlässigen Lage und einer äußeren luft- und wasserdichten Lage, bei denen ein Bereich zwischen innerer und äußerer Wandung eine Entlüftung bei der Füllung ermöglicht, indem die Längsnaht in diesem Bereich über 10 bis 50 % offen ist. Eine Überdruckentlastung der gefüllten und geschlossenen Säcke ist weder angesprochen noch möglich. Die Unterbrechung der Naht soll im gestapelten Zustand durch das Gewicht der aufgelegten Behältnisse fest verschlossen werden.The not pre-published WO 2005/092724 relates to packaging containers with an inner air-permeable layer and an outer air-tight and watertight layer in which an area between the inner and outer wall allows venting in the filling by the longitudinal seam in this area over 10 to 50% is open. An overpressure relief of the filled and closed bags is neither addressed nor possible. The interruption of the seam should be firmly closed in the stacked state by the weight of the placed containers.

DE 195 38 146 betrifft ebenfalls eine Entlüftung bei der Abfüllung und sieht zu diesem Zweck permanente Öffnungen der Längsnaht vor. Eine Überdruckentlüftung gefüllter und geschlossener Säcke ist nur möglich, solange diese nicht gestapelt sind Durch die offene Längsnaht ist wiederum ein Eindringen von Feuchtigkeit möglich und auch ein Entweichen von Füllgut. DE 195 38 146 also relates to a venting during filling and provides for this purpose permanent openings of the longitudinal seam. Overpressure ventilation filled and closed bags is only possible, as long as they are not stacked The open longitudinal seam in turn allows moisture to penetrate and also escape of filling material.

US 5,922,162 beschreibt Beutel mit Öffnungen im Bereich der oberen Verschlussnaht, die über einen labyrinthischen Weg mit dem Inneren des Behälters verbunden sind. Diese Art des Verschlusses ist aufwändig. US 5,922,162 describes bags with openings in the area of the upper closure seam, which are connected via a labyrinthine way to the interior of the container. This type of closure is complex.

In CH 494 169 werden Behälter mit einer Entlüftung bei der Befüllung beschrieben wobei Trennmedien zur Unterbrechung von Nähten führen. Zur Sicherung gegen ein Eindringen von Verunreinigungen und einen Austritt von Füllgut sind die bekannten langen Wege zwischen den Öffnungen zum Innenraum und nach außen notwendig.In CH 494 169 Containers are described as having a vent during filling, with release media resulting in the interruption of sutures. To ensure against ingress of contaminants and leakage of filling the known long ways between the openings to the interior and to the outside are necessary.

Es besteht daher weiterhin ein Bedarf an einem preiswerten und gleichzeitig sicher vor Verunreinigung und/oder Feuchtigkeit schützenden Verpackungsbehältnis für solche Füllgüter, bei denen während und/oder nach dem Einfüllen ein Überdruck abzuleiten ist.There is therefore still a need for a cheap and at the same time safe from contamination and / or moisture protective packaging container for such contents, in which an overpressure is to be derived during and / or after filling.

Diese Aufgabe wird durch ein flexibles Verpackungsbehältnis gemäß Anspruch 1 gelöst.This object is achieved by a flexible packaging container according to claim 1.

Überraschenderweise ist es möglich, die Schweiß- bzw. Klebenaht in Teilbereichen gasdurchlässig auszubilden, ohne die Stabilität der Verpackung zu beinträchtigen.Surprisingly, it is possible to make the welded or adhesive seam gas-permeable in partial regions without impairing the stability of the packaging.

Als Verpackungsbehältnis im Sinne der vorliegenden Erfindung kommen unter anderem FFS-Schläuche, Blocksäcke, offene Seitenfalten- und/oder Flachsäcke, Ventilkastensäcke (geklebt und geschweißt), Kreuzbodensäcke, Automaten(flach)folie usw. in Betracht, insbesondere FFS-Verpackungen.Suitable packaging containers for the purposes of the present invention include, inter alia, FFS hoses, block bags, open gusseted and / or flax sacks, valve box sacks (glued and welded), crossfloor sacks, automatic flat film, etc., in particular FFS packaging.

Besonders bevorzugt sind weiterhin solche Verpackungsbehältnisse, bei denen die Herstellung aus einer Flachfolie erfolgt, so dass bereits herstellungsbedingt zwischen den Außenkanten der Folienbahn in Längsrichtung ein Überlapp vorhanden ist, der als Bereich zwischen innerer und äußerer Wandung dienen kann. Bei diesen Verpackungsbehältnissen ist eine gesonderte Ausbildung dieses Bereichs somit nicht nötig.Furthermore, packaging containers are particularly preferred in which the production takes place from a flat film, so that an overlap exists between the outer edges of the film web in the longitudinal direction as a result of production, which can serve as a region between the inner and outer walls. In these packaging containers, a separate training this area is therefore not necessary.

Bei Verpackungsbehältnissen, bei denen, z.B. durch Blasextrusion, die Kunststofffolie direkt als Schlauch hergestellt wird, kann der Bereich zwischen innerer und äußerer Wandung dadurch ausgebildet werden, dass eine separate Folie mittels Schweiß- oder Klebeverbindung auf der das Verpackungsbehältnis bildenden Folie angebracht wird.For packaging containers where, e.g. by bubble extrusion, the plastic film is produced directly as a hose, the area between the inner and outer wall can be formed by applying a separate film by means of welding or adhesive bond on the film forming the packaging container.

Erfindungsgemäß wird eine oder beide Schweiß- bzw. Klebenaht bzw. -nähte in Querrichtung gasdurchlässig ausgebildet. Es ist aber zusätzlich möglich, sofern vorhanden, die Schweiß- bzw. Klebenaht in Längsrichtung insgesamt oder in Teilbereichen gasdurchlässig auszubilden.According to the invention, one or both welded or adhesive seams or seams are designed to be gas-permeable in the transverse direction. However, it is additionally possible, if present, to form the welded or adhesive seam in the longitudinal direction as a whole or in gas-permeable regions.

Eine bevorzugte Möglichkeit zur Ausbildung der Gasdurchlässigkeit besteht darin, die Oberfläche der Folie an den zu verbindenden Stellen oder auch insgesamt durch Aufbringen eines Trennmediums oder durch Corona-Behandlung so zu verändern, dass die Verbindung eine herabgesetzte Festigkeit aufweist. Der Auftrag bzw. die Behandlung kann dabei einseitig oder mehrseitig, vollflächig oder partiell erfolgen. Als Trennmedium eignen sich alle Medien, die ein Verschweißen oder Verkleben der Kunststofffolie verhindern, wie z.B. Öle, Fette, Farben, Lacke, pulverförmige Feststoffe, usw.A preferred way to form the gas permeability is to the surface of the film at the points to be joined or in total by applying a separating medium or by corona treatment to change so that the compound has a reduced strength. The order or the treatment can be unilateral or multi-sided, full-surface or partial. Suitable media are all media that prevent welding or bonding of the plastic film, such as oils, fats, paints, coatings, powdered solids, etc.

Die geschwächte Verbindungsnaht gewährleistet einen kontrollierten Gasaustritt zum Abbau eines während oder nach der Füllung auftretenden Überdrucks. Der Einsatz von Filtern oder ähnlichem, die im Stand der Technik zur Verhinderung eines Austritts von Füllgut erforderlich waren, ist nicht nötig, da die Öffnungen in der inneren Wandung von der dichten, äußeren Wandung abgedeckt sind. Auch ist durch die geschwächte Verbindungsnaht ein Austritt selbst von sehr feinen Partikeln nahezu unmöglich. Dies beruht darauf, dass zwischen den beiden nur teilweise fest verbundenen Folien Adhäsionskräfte wirken, die eine gewisse Haftung auch ohne feste Verbindung durch Schweißen bzw. Kleben bewirken. Nur wenn durch eine Druckdifferenz wie den beim oder nach der Abfüllung sich entwickelnden Überdruck die Adhäsionskräfte überwunden werden, öffnet sich die Verbindungsnaht und lässt den Überdruck entweichen.The weakened connection seam ensures a controlled gas outlet for reducing an overpressure occurring during or after the filling. The use of filters or the like, which were required in the prior art to prevent leakage of contents, is not necessary because the openings in the inner wall are covered by the dense, outer wall. Also, due to the weakened seam, leakage even of very fine particles is almost impossible. This is due to the fact that adhesion forces act between the two films, which are only partially firmly bonded, which bring about a certain adhesion even without a firm connection by welding or gluing. Only if the adhesion forces are overcome by a pressure difference, such as the overpressure which develops during or after filling, does the seam open and allow the overpressure to escape.

Im Gegensatz zum Stand der Technik sind demzufolge weder aufwändige Ventilkonstruktionen noch Perforationen der äußeren Wandung nötig.In contrast to the prior art, therefore, neither expensive valve constructions nor perforations of the outer wall are necessary.

Auch eine Vlieseinlage zur Rückhaltung von Verpackungsgut, das in den Bereich zwischen innerer und äußerer Wandung eindringen könnte, ist entbehrlich. Da die Öffnungen in der inneren Wandung von den geschwächten Verbindungsnähten beabstandet sind, vorzugsweise sind die Öffnungen nur in der Mitte des Behältnisses und die Quernähte sind geschwächt, ist ein Austritt von Verpackungsgut aufgrund des langen Weges nahezu ausgeschlossen. Gleiches gilt für evtl. von außen in den Bereich zwischen innerer und äußerer Wandung eindringende Verunreinigungen.Even a fleece insert for the retention of packaged goods, which could penetrate into the area between the inner and outer wall, is unnecessary. Since the openings in the inner wall are spaced from the weakened connecting seams, preferably the openings are only in the middle of the container and the transverse seams are weakened, an escape of packaged goods due to the long path is almost impossible. The same Applies to possibly from the outside in the area between the inner and outer wall penetrating impurities.

Die Öffnungen in der inneren Wandung sind vorzugsweise durch Nadelung gebildete Perforationen. Es ist aber auch möglich, Schlitze oder andere einen Gasdurchtritt ermöglichende Öffnungen vorzusehen. Bevorzugt werden die Öffnungen, insbesondere für sehr feine Füllgüter, so angeordnet, dass sich ein möglichst langer Weg von den Öffnungen zu dem (Teil-)Bereich der Verbindungsnaht ergibt, der den Gasaustritt ermöglicht.The openings in the inner wall are preferably perforations formed by needling. But it is also possible to provide slots or other gas passage permitting openings. The openings, in particular for very fine products, are preferably arranged in such a way that the greatest possible distance from the openings to the (partial) region of the connecting seam results, which enables the gas to escape.

Eine bevorzugte Ausführungsform weist daher Öffnungen auf, die in Längsrichtung mittig angeordnet sind, und der den Gasaustritt ermöglichende Teilbereich ist in einer oder beiden Quernähten ausgebildet.A preferred embodiment therefore has openings which are arranged centrally in the longitudinal direction, and the gas outlet permitting partial region is formed in one or both transverse seams.

Zur weiteren Verbesserung des Abbaus eines Überdruckes vor allem bei gestapelten Verpackungsbehältnissen können zwischen der inneren und der äußeren Wandung Abstandshalter vorgesehen sein. Brauchbar sind beispielsweise Prägungen.To further improve the reduction of overpressure, especially in stacked packaging containers spacers may be provided between the inner and the outer wall. Useful, for example, embossments.

Diese Abstandshalter sorgen dafür, dass auch bei den in einem Stapel unten liegenden Behältnissen das austretende Gas in dem Bereich zwischen innerer und äußerer Wandung bis zu den geschwächten Teilen der Verbindungsnähte gelangt. Es wäre ohne Abstandshalter denkbar, dass innere und äußere Wandung durch den Druck der aufliegenden Behältnisse so stark aufeinander gedrückt werden, dass der Überdruck im Inneren des Behältnisses entweder nicht in den Bereich zwischen innerer und äußerer Wandung gelangt oder dort nicht bis zu den geschwächten (Teil-)Bereichen der Verbindungsnaht bzw. -nähte.These spacers ensure that, even with the containers lying in a stack, the escaping gas in the area between the inner and outer walls reaches the weakened parts of the connecting seams. It would be conceivable without spacers that the inner and outer walls are so strongly pressed against each other by the pressure of the resting containers that the overpressure inside the container either does not reach the area between inner and outer wall or not there to the weakened (part -) areas of the seam or seams.

Die Herstellung der erfindungsgemäßen Verpackungsbehältnisse erfolgt im wesentlichen ebenso wie diejenige der nicht mit einer Überdruckentlüftung versehenen Behältnisse. Es ist lediglich vor der Anbringung zumindest einer Verbindungsnaht der zusätzliche Schritt einer Oberflächenbehandlung nötig, durch die bei der späteren Herstellung der Verbindungsnaht eine Gasdurchlässigkeit derselben zumindest in Teilbereichen erreicht wird.The preparation of the packaging containers according to the invention is essentially the same as that of not with a positive pressure vent provided containers. It is only necessary prior to the attachment of at least one seam, the additional step of a surface treatment, through which in the subsequent production of the seam, a gas permeability of the same is achieved at least in some areas.

Die vorliegende Erfindung soll am Beispiel einer FFS-Verpackung im folgenden anhand der beigefügten Figuren näher erläutert werden, ohne jedoch darauf beschränkt zu sein.The present invention will be explained in more detail using the example of an FFS packaging, with reference to the attached figures, without, however, being restricted thereto.

Figur 1 zeigt eine Seitenansicht einer nicht im Bereich der Erfindung liegenden FFS-Verpackung. FIG. 1 shows a side view of an out of the invention FFS packaging.

Figur 2 zeigt einen Schnitt entlang der Linie A-A in Figur 1. FIG. 2 shows a section along the line AA in FIG. 1 ,

In Figur 1 ist ein FFS-Schlauch 1 zu sehen, der aus einer Kunststofffolie hergestellt ist, indem diese in Längsrichtung so zusammengelegt wurde, dass zwischen den beiden Außenkanten der Folie 2 und 3 ein Bereich 4 mit einer inneren Wandung 5 und einer äußeren Wandung 6 (vgl. Figur 2) gebildet wird. Zwei Schweißnähte 7 und 8 in Längsrichtung fixieren die Außenkanten 2 und 3 der Folie mit der darunter bzw. darüber liegenden Folie, so dass ein Schlauch ausgebildet wird. Das Verpackungsbehältnis wird vor dem Befüllen mit einer den Boden bildenden Schweißnaht 9 und nach dem Befüllen mit einer Schweißnaht 10 versehen, welche die Verpackung verschließt.In FIG. 1 is an FFS tube 1 to see, which is made of a plastic film by this was folded in the longitudinal direction so that between the two outer edges of the film 2 and 3, a region 4 with an inner wall 5 and an outer wall 6 (see. FIG. 2 ) is formed. Two weld seams 7 and 8 in the longitudinal direction fix the outer edges 2 and 3 of the film with the underlying or overlying film, so that a hose is formed. The packaging container is provided with a bottom seam 9 before filling and after filling with a weld 10 which closes the package.

Die Außenkante 2 der Folie ist auf der später zum Inneren 14 des Behältnisses 1 gewandten Seite mit einem Trennlack 11 versehen, der dazu führt, dass die Schweißnaht 7 einen Gasaustritt ermöglicht. Weiterhin sind entlang der Außenkante 3 in Längsrichtung Perforationen 12 und Prägungen 13 angebracht.The outer edge 2 of the film is provided on the later to the interior 14 of the container 1 side facing with a release coating 11, which causes the weld 7 allows a gas outlet. Furthermore, along the outer edge 3 in the longitudinal direction perforations 12 and embossments 13 are attached.

In Figur 2 ist zu erkennen, dass die Perforationen 12 nach der Verschweißung zu einem Schlauch in der inneren Wandung des Bereiches 4 zu liegen kommen. Dies trifft ebenfalls auf die Prägungen 13 zu, die jedoch in Figur 2 nicht dargestellt sind.In FIG. 2 It can be seen that the perforations 12 come to rest after welding to a tube in the inner wall of the area 4. This also applies to the embossments 13, which, however, in FIG. 2 are not shown.

Sobald sich im Inneren 14 der Verpackung 1 ein Überdruck bildet, wird das Gas durch die Perforationen 12 in den Bereich 4 eintreten und wird von dort durch die gasdurchlässige Schweißnaht 7 nach außen abgeleitet. Ein eventuelles Eindringen von Füllgut in den Bereich 4 ist unschädlich, da dieses durch die Schweißnaht kaum austreten kann. Auch ein Eindringen von Verunreinigungen in den Innenraum 14 ist nicht zu befürchten, da nach dem Abbau des Überdrucks die innere und die äußere Folie dicht aufeinander liegen und durch Adhäsionskräfte in dieser Lage fixiert werden.As soon as an overpressure forms in the interior 14 of the packaging 1, the gas will enter the region 4 through the perforations 12 and is discharged from there through the gas-permeable weld seam 7 to the outside. Any infiltration of contents in the area 4 is harmless, as this can hardly escape through the weld. Also, an ingress of contaminants in the interior 14 is not to be feared, since after the reduction of the overpressure, the inner and the outer film are close to each other and are fixed by adhesive forces in this position.

Mit der Verpackung ist es möglich auch zementhaltige Baustoffe zu verpacken, welche hygroskopisch sind und nach dem Abfüllen zur Ausbildung eines Überdruckes neigen.With the packaging, it is also possible to pack cementitious building materials, which are hygroscopic and tend to form an overpressure after filling.

Figur 3 zeigt eine FFS-Verpackung mit einer gasdurchlässigen Verbindungsnaht. Gleiche Teile sind mit gleichen Bezugsziffern gekennzeichnet. FIG. 3 shows an FFS packaging with a gas-permeable seam. Identical parts are marked with the same reference numbers.

In Figur 3 erkennt man einen FFS-Schlauch 1, bei dem anstelle des Trennlackes ein Corona-behandelter Bereich 11' vorgesehen ist. Die Querschweißnähte 9 und 10 ermöglichen dadurch an der Stelle, an der Bereich 11' liegt, einen Gasaustritt bei Überdruck. Die Öffnungen sind als Perforationen 12 nur in der Mitte des Sackes ausgebildet. Abstandshalter sind hier nicht vorgesehen. Diese Verpackung ist besonders für sehr feinteilige Füllgüter geeignet, da sich ein besonders langer Weg von den Öffnungen zu dem Bereich das Gasaustrittes ergibt. Hierdurch kann ein Austreten von Füllgut praktisch vollständig verhindert werden.In FIG. 3 recognizes a FFS tube 1, in which instead of the release coating, a corona-treated portion 11 'is provided. The transverse welds 9 and 10 thereby allow at the point where the area 11 'is located, a gas outlet at overpressure. The openings are formed as perforations 12 only in the middle of the bag. Spacers are not provided here. This packaging is particularly suitable for very finely divided contents, since there is a particularly long way from the openings to the area of the gas outlet. As a result, leakage of filling material can be virtually completely prevented.

Claims (6)

  1. A flexible packaging container made of plastic which comprises a region (4) with an interior wall and an exterior wall, said region being formed by means of sealed or glued seams (7, 9, 10) by an overlap between the outer edges (2, 3) of a film used to manufacture the packaging container, wherein openings (12) allowing gas to escape from the interior region of the container and to enter into the region (4) between the interior and exterior walls are provided in the interior wall, characterized in that the sealed or glued transverse seams (9, 10) enclosing the region are, at least in a partial region, formed such that they allow gas to escape in a controlled manner to relieve an overpressure occurring during filling or thereafter.
  2. Packaging container according to claim 1, characterized in that the openings (12) are perforations.
  3. Packaging container according to claim 1 or 2, characterized in that the packaging container (1) is an FFS tube, a block bag, an open gusseted bag and/or flat sack, a valve sack (glued and sealed) or a hexagonal bottom sack, more particularly an FFS packaging.
  4. Packaging container according to claim 3, characterized in that the region (4) comprising an interior wall and an exterior wall is formed by an overlap of the flat film used to manufacture said packaging container, said overlap being arranged between the two outer edges (2, 3).
  5. A packaging container according to anyone of Claims 1 to 4, characterized in that the sealed or glued seam (9, 10) is weakened by a separation medium (11) being applied to the plastic before sealing or gluing, on one side or more sides, over the entire surface or over a part of the surface only, thus allowing gas to escape.
  6. A packaging container according to anyone of Claims 1 to 4, characterized in that the sealed or glued seam (9, 10) is weakened by the plastic, before being sealed or glued, being subjected to a Corona treatment (11') on one or more sides, over the entire surface or over a part of the surface only, thus allowing gas to escape.
EP04012528A 2004-05-27 2004-05-27 Vented plastic bag Expired - Lifetime EP1607339B1 (en)

Priority Applications (21)

Application Number Priority Date Filing Date Title
AT04012528T ATE390364T1 (en) 2004-05-27 2004-05-27 PLASTIC BAG WITH PRESSURE VENTILATION
DE502004006665T DE502004006665D1 (en) 2004-05-27 2004-05-27 Plastic bag with overpressure ventilation
EP04012528A EP1607339B1 (en) 2004-05-27 2004-05-27 Vented plastic bag
ES04012528T ES2305612T3 (en) 2004-05-27 2004-05-27 PLASTIC SACK WITH EXPRESSION RELIEF VENTILATION.
PL04012528T PL1607339T3 (en) 2004-05-27 2004-05-27 Vented plastic bag
SI200430749T SI1607339T1 (en) 2004-05-27 2004-05-27 Vented plastic bag
PT04012528T PT1607339E (en) 2004-05-27 2004-05-27 Vented plastic bag
DK04012528T DK1607339T3 (en) 2004-05-27 2004-05-27 Plastic bag with compressed air vent
JP2007513810A JP2008500241A (en) 2004-05-27 2005-05-27 Plastic bag with overpressure relief
EA200602128A EA010143B1 (en) 2004-05-27 2005-05-27 Plastic bag featuring overpressure relief
US11/138,641 US7927015B2 (en) 2004-05-27 2005-05-27 Plastic bag with overpressure relief
BRPI0510651A BRPI0510651B1 (en) 2004-05-27 2005-05-27 overpressure vented plastic bag
DE202005021161U DE202005021161U1 (en) 2004-05-27 2005-05-27 Plastic bag with overpressure venting
MXPA06013132A MXPA06013132A (en) 2004-05-27 2005-05-27 Plastic bag featuring overpressure relief.
CNB2005800167600A CN100532215C (en) 2004-05-27 2005-05-27 Plastic bag with overpressure relief
CA2568289A CA2568289C (en) 2004-05-27 2005-05-27 Plastic bag featuring overpressure relief
PCT/EP2005/005719 WO2005115856A1 (en) 2004-05-27 2005-05-27 Plastic bag featuring overpressure relief
NO20064965A NO344897B1 (en) 2004-05-27 2006-10-30 Plastic container comprehensive overpressure relief
IL179247A IL179247A (en) 2004-05-27 2006-11-14 Plastic bag featuring overpressure relief
CY20081100662T CY1110367T1 (en) 2004-05-27 2008-06-24 A PLASTIC BAG WITH OUTPUT VENTILATION
US13/038,458 US8371752B2 (en) 2004-05-27 2011-03-02 Plastic bag with overpressure relief

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04012528A EP1607339B1 (en) 2004-05-27 2004-05-27 Vented plastic bag

Publications (2)

Publication Number Publication Date
EP1607339A1 EP1607339A1 (en) 2005-12-21
EP1607339B1 true EP1607339B1 (en) 2008-03-26

Family

ID=34925147

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04012528A Expired - Lifetime EP1607339B1 (en) 2004-05-27 2004-05-27 Vented plastic bag

Country Status (19)

Country Link
US (2) US7927015B2 (en)
EP (1) EP1607339B1 (en)
JP (1) JP2008500241A (en)
CN (1) CN100532215C (en)
AT (1) ATE390364T1 (en)
BR (1) BRPI0510651B1 (en)
CA (1) CA2568289C (en)
CY (1) CY1110367T1 (en)
DE (2) DE502004006665D1 (en)
DK (1) DK1607339T3 (en)
EA (1) EA010143B1 (en)
ES (1) ES2305612T3 (en)
IL (1) IL179247A (en)
MX (1) MXPA06013132A (en)
NO (1) NO344897B1 (en)
PL (1) PL1607339T3 (en)
PT (1) PT1607339E (en)
SI (1) SI1607339T1 (en)
WO (1) WO2005115856A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2149504A1 (en) 2008-07-30 2010-02-03 Nordfolien GmbH Plastic film packaging
EP2792609A1 (en) 2013-04-18 2014-10-22 Nordfolien GmbH Packaging container for bulk materials
DE202014007340U1 (en) 2014-09-15 2015-12-18 Bischof + Klein Gmbh & Co. Kg Flexible packaging container

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1607339B1 (en) * 2004-05-27 2008-03-26 RKW AG Rheinische Kunststoffwerke Vented plastic bag
AU2007211196A1 (en) * 2006-01-27 2007-08-09 The Glad Products Company Valve element
DE102006004291A1 (en) 2006-01-31 2007-08-09 Windmöller & Hölscher Kg Sack and method for producing the same
DE102006017229B4 (en) * 2006-04-12 2008-06-05 Nordfolien Gmbh Packaging for bulk goods, in particular bags of plastic film
US20080144979A1 (en) * 2006-11-06 2008-06-19 Marko I.R.D.C. Plastic bag with improved air evacuation structure
DE202006019054U1 (en) * 2006-12-18 2008-04-30 Bischof + Klein Gmbh & Co. Kg Packaging container in bag or sack form
US7784160B2 (en) 2007-03-16 2010-08-31 S.C. Johnson & Son, Inc. Pouch and airtight resealable closure mechanism therefor
US7886412B2 (en) 2007-03-16 2011-02-15 S.C. Johnson Home Storage, Inc. Pouch and airtight resealable closure mechanism therefor
US8197139B2 (en) * 2007-06-15 2012-06-12 S.C. Johnson Home Storage, Inc. Valve and valve strip for a reclosable container
US7887238B2 (en) 2007-06-15 2011-02-15 S.C. Johnson Home Storage, Inc. Flow channels for a pouch
US7967509B2 (en) 2007-06-15 2011-06-28 S.C. Johnson & Son, Inc. Pouch with a valve
US7874731B2 (en) 2007-06-15 2011-01-25 S.C. Johnson Home Storage, Inc. Valve for a recloseable container
US7857515B2 (en) 2007-06-15 2010-12-28 S.C. Johnson Home Storage, Inc. Airtight closure mechanism for a reclosable pouch
US7946766B2 (en) 2007-06-15 2011-05-24 S.C. Johnson & Son, Inc. Offset closure mechanism for a reclosable pouch
DE102008046173B4 (en) * 2008-09-06 2010-06-17 Nordfolien Gmbh Packaging container made of plastic film
DE102008049391A1 (en) * 2008-09-27 2010-04-29 Nordfolien Gmbh Packaging for bulk goods
EP2362845B1 (en) * 2008-11-26 2015-03-25 Karatzis S.A. Packaging bag
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
CN102320410A (en) * 2011-05-31 2012-01-18 枝江奥美医疗用品有限公司 Pillow-like packing bag and packing machine thereof
US9555947B2 (en) * 2012-05-31 2017-01-31 Berry Plastics Corporation Vented steam cooking package
MY182275A (en) 2012-07-13 2021-01-18 Basf Agro B V Arnhem Nl Zurich Branch Evacuable packaging for insecticide-impregnated nets
DE102013000038A1 (en) * 2013-01-03 2014-07-03 Mondi Ag Bag for transporting filling material from manufacturer to user, has plastic wall that is partially double-layered with two adjacent layers, where layers are lifted from each other in area of perforations due to overpressure
US20150075116A1 (en) * 2013-09-16 2015-03-19 Lorelei Hepburn Cartridge for a plant-treatment product sprayer, and related methods
US9850046B2 (en) * 2013-11-06 2017-12-26 The Procter & Gamble Company Flexible containers with vent systems
CA2927199C (en) 2013-11-06 2019-06-18 The Procter & Gamble Company Flexible containers having flexible valves
CA2925919A1 (en) * 2013-11-06 2015-05-14 The Procter & Gamble Company Easy to empty flexible containers
EP3280658A1 (en) 2015-04-10 2018-02-14 The Procter and Gamble Company Flexible containers with integral dispensing spout
KR101971817B1 (en) 2015-04-10 2019-04-23 더 프록터 앤드 갬블 캄파니 Flexible container with product dispensing visualization
DE102016220428A1 (en) * 2016-09-27 2018-03-29 Windmöller & Hölscher Kg Valve bag and method and system for producing a valve sack
WO2018060277A1 (en) * 2016-09-27 2018-04-05 Windmöller & Hölscher Kg Plastic bag, in particular ffs bag, and method and device for producing and filling a bag
CN106927129A (en) * 2017-04-21 2017-07-07 东莞市康巢建材有限公司 A kind of packaging bag for emptying inner air
DE102019130409A1 (en) 2019-11-12 2021-05-12 Rkw Se Laminating composite
WO2021241568A1 (en) * 2020-05-28 2021-12-02 キョーラク株式会社 Packaging bag
US20230054277A1 (en) * 2021-08-12 2023-02-23 Cj Cheiljedang Corporation Pouch for retort food

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005092724A1 (en) * 2004-03-18 2005-10-06 Wacker Polymer Systems Gmbh & Co. Kg Multi-walled, sack-type packaging

Family Cites Families (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1212857B (en) 1962-04-25 1966-03-17 Olin Mathieson Valve sack for receiving and packaging bulk goods
FR1367922A (en) * 1963-08-28 1964-07-24 Bowater Res & Dev Co Ltd Envelope or container made at least in part of flexible sheet material
US3302859A (en) 1964-12-21 1967-02-07 Bemis Co Inc Bag
US3309006A (en) 1966-02-16 1967-03-14 Bemis Co Inc Plastic bags
GB1172803A (en) 1967-03-30 1969-12-03 Fisons Pty Ltd Sealing Bags.
US3439869A (en) 1968-02-08 1969-04-22 Dow Chemical Co Vented bag
CH494169A (en) 1968-06-21 1970-07-31 Nasionale Misstowwe Elendoms B Plastic bag
NL143502B (en) * 1970-06-17 1974-10-15 Wavin Bv PLASTIC BLOCK BOTTOM BAG WITH FILLING VALVE.
GB1401713A (en) 1973-01-17 1975-07-30 British Visqueen Ltd Plastics sack
GB1457429A (en) * 1973-07-30 1976-12-01 British Visqueen Ltd Vented bags
JPS5758118Y2 (en) * 1979-07-24 1982-12-13
DK150137C (en) 1983-11-18 1987-06-22 Raackmanns Fab As LAMINATE FOR USE IN THE PACKAGING OF PACKAGING CONTAINING GAS EMISSIONS
US4550441A (en) 1984-07-18 1985-10-29 St. Regis Paper Company Vented bag
JPS63212531A (en) 1987-02-28 1988-09-05 Senpaku Koeki Kk Welding method for synthetic resin film
JPH0219204A (en) * 1988-06-30 1990-01-23 Showa Alum Corp Control of adhesive strength
JPH0645371B2 (en) * 1989-03-07 1994-06-15 新日本製袋株式会社 Storage bag
DE9002330U1 (en) * 1990-02-28 1990-05-03 Bischof Und Klein Gmbh & Co, 4540 Lengerich, De
US5180599A (en) * 1991-03-08 1993-01-19 Oscar Mayer Foods Corporation Peelable adhesive-based package seal and method of making same
JPH06171247A (en) 1992-12-02 1994-06-21 Dainippon Printing Co Ltd Ink release film, ink sheet for exposure pattern and pattern forming method
DE4303894C2 (en) 1993-02-10 1996-05-09 Haver & Boecker Method for producing a packaging material that can be filled with a bulk material and is flat when empty
US5419638A (en) * 1993-05-06 1995-05-30 Jamison; Mark D. Pressure sensitive gas valve for flexible pouch
KR100193465B1 (en) * 1993-12-28 1999-06-15 가타야마 도루 Packing Equipment
DE4408244A1 (en) 1994-03-11 1995-09-14 Bosch Gmbh Robert Laminate for the production of packaging containers
KR100371671B1 (en) * 1994-05-17 2003-05-17 이데미쓰세끼유가가꾸가부시끼가이샤 A snap-fastener bag
US5922162A (en) 1995-06-07 1999-07-13 Cobe Laboratories, Inc. Gas-permeable pathogen-resistant labyrinthine seal and method for making labyrinthine seal
DE19538146A1 (en) 1995-10-13 1997-04-17 Rovema Gmbh Pouch with at least one vent and method of making the pouch
JPH09156016A (en) 1995-12-06 1997-06-17 Toppan Printing Co Ltd Packaging material
JP3012970B2 (en) * 1996-10-04 2000-02-28 株式会社サンエー化研 Packaging bag for microwave cooked food
JP3215658B2 (en) * 1997-09-10 2001-10-09 大倉工業株式会社 Granule storage bag
US6440508B1 (en) * 1997-11-13 2002-08-27 Kyodo Shiko Co. Laminated film, method for production thereof, bag and package using the laminated film, and method for separation thereof
JPH11227792A (en) * 1998-02-10 1999-08-24 Oji Seitai Kk Multilayer bag with unfoldable hexagonal bottom
GB2358174B (en) * 2000-01-14 2002-09-04 Tecksom Internat Ltd A package incorporating a pressure venting and related method of manufacture
US6596355B1 (en) * 2000-04-06 2003-07-22 Dai Nippon Printing Co., Ltd. Sealable package for heating in a microwave oven
JP2002053148A (en) * 2000-08-08 2002-02-19 Ricoh Co Ltd Powdered material storage container, manufacturing method therefor, and image forming apparatus
JP2002080070A (en) * 2000-09-07 2002-03-19 Kyokuto Kobunshi Kk Automatic holing bag for use in microwave oven
JP3902494B2 (en) * 2001-07-19 2007-04-04 博之 山田 Bag body having deaeration structure and manufacturing method thereof
JP2003054651A (en) 2001-08-09 2003-02-26 Nippon Matai Co Ltd Packaging bag for use in microwave oven
JP2004090261A (en) 2002-08-29 2004-03-25 Hakko Kasei Kk Polyethylenic resin tubular film with corona discharge stripes and use thereof
JP4287118B2 (en) * 2002-09-26 2009-07-01 大日本印刷株式会社 Microwave packaging bag
JP4059753B2 (en) * 2002-11-14 2008-03-12 大和グラビヤ株式会社 Storage bag
EP1422163A1 (en) 2002-11-22 2004-05-26 Amcor Flexibles Europe A/S Food package for heating in an oven
JP3860536B2 (en) 2002-12-25 2006-12-20 八興化成株式会社 Polyethylene resin tubular film with corona discharge and its application
EP1607339B1 (en) * 2004-05-27 2008-03-26 RKW AG Rheinische Kunststoffwerke Vented plastic bag
DE102006004291A1 (en) * 2006-01-31 2007-08-09 Windmöller & Hölscher Kg Sack and method for producing the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005092724A1 (en) * 2004-03-18 2005-10-06 Wacker Polymer Systems Gmbh & Co. Kg Multi-walled, sack-type packaging

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2149504A1 (en) 2008-07-30 2010-02-03 Nordfolien GmbH Plastic film packaging
DE102008035700A1 (en) 2008-07-30 2010-02-04 Nordfolien Gmbh Packaging made of plastic film
EP2792609A1 (en) 2013-04-18 2014-10-22 Nordfolien GmbH Packaging container for bulk materials
DE202014010715U1 (en) 2013-04-18 2016-05-23 Nordfolien Gmbh Packaging container for bulk goods
DE202014007340U1 (en) 2014-09-15 2015-12-18 Bischof + Klein Gmbh & Co. Kg Flexible packaging container

Also Published As

Publication number Publication date
DK1607339T3 (en) 2008-07-21
SI1607339T1 (en) 2008-08-31
ATE390364T1 (en) 2008-04-15
EA200602128A1 (en) 2007-04-27
BRPI0510651B1 (en) 2017-02-14
EA010143B1 (en) 2008-06-30
MXPA06013132A (en) 2007-07-24
PL1607339T3 (en) 2008-10-31
CN1956893A (en) 2007-05-02
US20110188786A1 (en) 2011-08-04
IL179247A0 (en) 2007-03-08
IL179247A (en) 2010-11-30
US7927015B2 (en) 2011-04-19
DE502004006665D1 (en) 2008-05-08
CA2568289A1 (en) 2005-12-08
EP1607339A1 (en) 2005-12-21
US8371752B2 (en) 2013-02-12
DE202005021161U1 (en) 2007-04-05
NO20064965L (en) 2007-02-27
PT1607339E (en) 2008-06-30
BRPI0510651A (en) 2007-11-20
CN100532215C (en) 2009-08-26
JP2008500241A (en) 2008-01-10
ES2305612T3 (en) 2008-11-01
CA2568289C (en) 2012-08-14
CY1110367T1 (en) 2015-04-29
NO344897B1 (en) 2020-06-22
US20050281493A1 (en) 2005-12-22
WO2005115856A1 (en) 2005-12-08

Similar Documents

Publication Publication Date Title
EP1607339B1 (en) Vented plastic bag
EP2032454B2 (en) Film bag
EP1600399B1 (en) Plastic bag for bulk material
EP2763906B1 (en) Packaging container that can be ventilated
EP1910176A1 (en) Ventilatable bag
EP3092179A1 (en) Paper bag
WO2011039007A2 (en) Apparatus and method for forming, filling and sealing packaging containers each comprising one pouring device
EP2792609A1 (en) Packaging container for bulk materials
DE3312887A1 (en) Overpressure valve for a packaging container
DE102013000038A1 (en) Bag for transporting filling material from manufacturer to user, has plastic wall that is partially double-layered with two adjacent layers, where layers are lifted from each other in area of perforations due to overpressure
EP2345595B1 (en) Valve sack with ventilation device
WO2014177248A1 (en) Paper sack
EP2050689A1 (en) Packaging bag
DE102007022400A1 (en) Package e.g. bag, for accommodating e.g. humidity-sensitive bulk material, has channel connecting inner ventilation opening with outer ventilation opening, where openings are provided in respective chambers to increase water tightness
EP2186742A1 (en) Film packaging bag, especially for powdery, dusty filling goods
DE2265145B2 (en) Bottom bags made of plastic film
EP2684814B1 (en) Valve bag with ventilation pocket
DE602006000144T2 (en) Containers for collecting and transporting hazardous waste
DE4140213A1 (en) Filler valve for filling sacks - has valve which allows air to flow out but prevents flow of material
DE1611667B2 (en) Ventable valve bag
DE102008049391A1 (en) Packaging for bulk goods
EP2161210B1 (en) Plastic film packing cases
DE102005035352A1 (en) The sack, for filling with loose materials, has a structured overlap of inner and outer layers with ventilation to allow air to escape during filling
DE8133295U1 (en) Sack that can be used as packaging material for bulk goods, preferably made of plastic film
EP1424293B1 (en) Plastic packaging container

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20041222

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

TPAC Observations filed by third parties

Free format text: ORIGINAL CODE: EPIDOSNTIPA

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AXX Extension fees paid

Extension state: HR

Payment date: 20060330

Extension state: AL

Payment date: 20060330

Extension state: LT

Payment date: 20060330

Extension state: MK

Payment date: 20060330

Extension state: LV

Payment date: 20060330

17Q First examination report despatched

Effective date: 20060915

17Q First examination report despatched

Effective date: 20060915

17Q First examination report despatched

Effective date: 20060915

TPAC Observations filed by third parties

Free format text: ORIGINAL CODE: EPIDOSNTIPA

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 502004006665

Country of ref document: DE

Date of ref document: 20080508

Kind code of ref document: P

REG Reference to a national code

Ref country code: RO

Ref legal event code: EPE

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: SCHNEIDER FELDMANN AG PATENT- UND MARKENANWAELTE

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20080618

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20080401471

Country of ref document: GR

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20080326

REG Reference to a national code

Ref country code: PL

Ref legal event code: T3

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2305612

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: HU

Ref legal event code: AG4A

Ref document number: E003748

Country of ref document: HU

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080531

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

26 Opposition filed

Opponent name: DRIVER, VIRGINIA ROZANNE

Effective date: 20081223

Opponent name: MURGITROYD & COMPANY

Effective date: 20081223

NLR1 Nl: opposition has been filed with the epo

Opponent name: MURGITROYD & COMPANY

Opponent name: DRIVER, VIRGINIA ROZANNE

29A Proceedings stayed after grant

Effective date: 20090424

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: RKW SE

Free format text: RKW AG RHEINISCHE KUNSTSTOFFWERKE#HORCHHEIMER STRASSE 50#67547 WORMS (DE) -TRANSFER TO- RKW SE#NACHTWEIDEWEG 1-7#67227 FRANKENTHAL (DE)

NLXE Nl: other communications concerning ep-patents (part 3 heading xe)

Free format text: HEADING PE, SECTION 1, PAT. BUL. NO. 06/2008 (AND HEADING PE, SECTIONS 2 AND 3, PAT. BUL. NO. 09/2008) IN THE CASE REFERRED TO IN R 78 EPC IMPLEMENTING REG. THE PROCEEDINGS WERE SUSPENDED AS FROM 20090424 (SEE EUROPEAN PATENT BULLETIN 20090624)

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: RKW SE

NLT2 Nl: modifications (of names), taken from the european patent patent bulletin

Owner name: RKW SE

Effective date: 20090909

NLT1 Nl: modifications of names registered in virtue of documents presented to the patent office pursuant to art. 16 a, paragraph 1

Owner name: RKW SE

REG Reference to a national code

Ref country code: SK

Ref legal event code: TC4A

Ref document number: E 3690

Country of ref document: SK

Owner name: RKW SE, WORMS, DE

Effective date: 20100125

Ref country code: SK

Ref legal event code: TE4A

Ref document number: E 3690

Country of ref document: SK

Owner name: RKW SE, FRANKENTHAL, DE

Effective date: 20100125

REG Reference to a national code

Ref country code: EE

Ref legal event code: HC1A

Ref document number: E002119

Country of ref document: EE

REG Reference to a national code

Ref country code: SI

Ref legal event code: SP73

Owner name: RKW SE; DE

Effective date: 20100513

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

Ref country code: FR

Ref legal event code: CA

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CY

Payment date: 20100517

Year of fee payment: 7

REG Reference to a national code

Ref country code: HU

Ref legal event code: GB9C

Owner name: RKW SE, DE

Free format text: FORMER OWNER(S): RKW AG RHEINISCHE KUNSTSTOFFWERKE, DE

Ref country code: HU

Ref legal event code: FH1C

Free format text: FORMER REPRESENTATIVE(S): KOVARI GYOERGY, ADVOPATENT SZABADALMI ES VEDJEGY IRODA, HU

Representative=s name: ADVOPATENT SZABADALMI ES VEDJEGY IRODA, HU

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20110530

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: EE

Payment date: 20110525

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080326

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120527

Ref country code: EE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120531

REG Reference to a national code

Ref country code: EE

Ref legal event code: MM4A

Ref document number: E002119

Country of ref document: EE

Effective date: 20120531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120527

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

R26 Opposition filed (corrected)

Opponent name: MURGITROYD & COMPANY

Effective date: 20081223

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

R26 Opposition filed (corrected)

Opponent name: MURGITROYD & COMPANY

Effective date: 20081223

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

R26 Opposition filed (corrected)

Opponent name: MURGITROYD & COMPANY

Effective date: 20081223

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

R26 Opposition filed (corrected)

Opponent name: MURGITROYD & COMPANY

Effective date: 20081223

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: RKW SE, DE

Free format text: FORMER OWNER: RKW SE, DE

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: RO

Payment date: 20230518

Year of fee payment: 20

Ref country code: PT

Payment date: 20230516

Year of fee payment: 20

Ref country code: NL

Payment date: 20230519

Year of fee payment: 20

Ref country code: IT

Payment date: 20230531

Year of fee payment: 20

Ref country code: IE

Payment date: 20230516

Year of fee payment: 20

Ref country code: FR

Payment date: 20230517

Year of fee payment: 20

Ref country code: ES

Payment date: 20230621

Year of fee payment: 20

Ref country code: DK

Payment date: 20230522

Year of fee payment: 20

Ref country code: DE

Payment date: 20230519

Year of fee payment: 20

Ref country code: CZ

Payment date: 20230512

Year of fee payment: 20

Ref country code: CH

Payment date: 20230602

Year of fee payment: 20

Ref country code: BG

Payment date: 20230516

Year of fee payment: 20

R26 Opposition filed (corrected)

Opponent name: DRIVER, VIRGINIA ROZANNE

Effective date: 20081223

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20230523

Year of fee payment: 20

Ref country code: SK

Payment date: 20230522

Year of fee payment: 20

Ref country code: SI

Payment date: 20230518

Year of fee payment: 20

Ref country code: SE

Payment date: 20230522

Year of fee payment: 20

Ref country code: PL

Payment date: 20230516

Year of fee payment: 20

Ref country code: HU

Payment date: 20230519

Year of fee payment: 20

Ref country code: GR

Payment date: 20230516

Year of fee payment: 20

Ref country code: FI

Payment date: 20230523

Year of fee payment: 20

Ref country code: AT

Payment date: 20230516

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20230517

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20230515

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 502004006665

Country of ref document: DE