EP2004505B1 - Emballage pour matieres en vrac, notamment sac en feuille de plastique - Google Patents

Emballage pour matieres en vrac, notamment sac en feuille de plastique Download PDF

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Publication number
EP2004505B1
EP2004505B1 EP07722141A EP07722141A EP2004505B1 EP 2004505 B1 EP2004505 B1 EP 2004505B1 EP 07722141 A EP07722141 A EP 07722141A EP 07722141 A EP07722141 A EP 07722141A EP 2004505 B1 EP2004505 B1 EP 2004505B1
Authority
EP
European Patent Office
Prior art keywords
packaging
air
layer
wall
multilayer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP07722141A
Other languages
German (de)
English (en)
Other versions
EP2004505A1 (fr
Inventor
Michael Kreymborg
Ulla Heckmann
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.)
Nordfolien GmbH
Original Assignee
Nordfolien 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
Application filed by Nordfolien GmbH filed Critical Nordfolien GmbH
Publication of EP2004505A1 publication Critical patent/EP2004505A1/fr
Application granted granted Critical
Publication of EP2004505B1 publication Critical patent/EP2004505B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

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

Definitions

  • the invention relates to a package for bulk materials, in particular sack made of plastic film, with a bulk material enveloping the packaging wall, which has at least one multilayer wall portion of at least one inner layer and at least one outer layer, wherein the multilayer wall region extends in a packaging longitudinal direction and Each layer has at least one air-permeable surface piece, wherein between the inner layer and the outer layer at least one guide member for the air-permeable surface pieces passing air flow is arranged, wherein the guide member for deflecting the air flow from at least a portion of an air-impermeable liner is formed, which is a separate , Between the layers of the multilayer wall region in the package longitudinal direction extending, at least on one side flow around film strips.
  • Known packages are bags or sacks made of a film, in particular plastic film, which are used for wrapping a variety of bulk or filling goods, such as cement, fertilizers or similar products that are produced for example in the building materials industry or the chemical industry.
  • a valve strip for a one-way vent is provided, which covers the openings in the inner layer like a valve.
  • the openings of the outer layer are formed laterally along the longitudinal edges of the valve strip.
  • the US-A-5,996,800 shows a packaging bag made of a plastic film, the packaging bag having in its packaging wall an opening which is of a folded, two-ply and with the outside of the Packaging bag cohesively connected piece of material is covered.
  • the upper layer of the folded piece of material is circumferentially connected to the outside of the packaging bag and has an opening which is arranged approximately congruent to the opening in the packaging wall. Through the lower layer of the folded piece of material, which is located between the upper layer and the packaging wall, the openings are covered.
  • valve for packaging
  • the valve comprises a wall of cardboard, in which at least one breakthrough is introduced.
  • an air-impermeable membrane is arranged, which is held by a glued on the inside of the valve wall thin film in a predetermined position.
  • the thin film further comprises an opening covered by the membrane is formed, through which flows at an overpressure in the interior of the package in areas between the thin film and the wall of cardboard air.
  • About the unglued strip to the uncovered openings in the cardboard wall then passes through the air through this outward.
  • the DE 81 33 295 U1 describes a packaging container made of a plastic film, which comprises a multilayer wall region, wherein openings are provided for venting from the packaging interior in each layer of the multi-layer area. Between the inner and outer layer of the multi-layer area an air-permeable filter material is used to prevent leakage of fine-grained product from the packaging interior.
  • the filter material is a fiber flow, in which a large part of the particles of the filling material is retained.
  • the invention has for its object to improve a package of the aforementioned genus such that in addition to a structurally simplified design ensures optimal ventilation and at the same time the dusting of the contents is reliably prevented.
  • a packaging wall enveloping the bulk material, which has at least one multilayer wall portion of at least one inner layer and at least one outer layer, wherein the multilayer wall region extends in a packaging longitudinal direction and each layer at least one air permeable surface piece, wherein between the inner layer and the outer layer at least one guide member for the air permeable surface pieces passing air flow is arranged, wherein the guide member for deflecting the air flow from at least a portion of an air-impermeable liner is formed, which is a separate, between the layers of the multilayer wall region extending in the packaging longitudinal direction, at least on one side flow around film strip, the invention provides that the inner layer of the multilayer wall region by means of a sep Araten material strip is formed, which is arranged in the interior of the package, and that with the intermediate layer at least the air-permeable surface portions of the inner layer and the outer layer are covered.
  • the guide element arranged according to the invention influences the flow of the air escaping from the interior of the packaging, so that a straight or direct passage of air through the multi-layered wall region of the packaging wall and the associated discharge of solid particles of the introduced filling material is advantageously prevented.
  • the strong change or deflection of the flow of the escaping air flow causes, due to the higher inertia of the solid particles, a nearly complete separation of the solid particles from the multi-layered wall area passing air flow. It is for Example possible that multiple, mutually entangled guide members are present in multi-layered wall area, forming the overlapping areas.
  • the guide member is at least a portion of an air-impermeable intermediate layer, which is arranged such that at least the air-permeable surface portions of the inner layer and the outer layer are covered by the intermediate layer.
  • Each section of the air-impermeable intermediate layer which can be, for example, a film, also serves as a baffle or separating element for the discharged with the escaping air flow solid particles. Due to the intermediate layer projecting into the air flow and the associated deflection of the air flow, regions with increased flow or turbulences and regions with poorer flow occur in the multi-layered wall region. Especially in the areas with reduced flow velocity, the kinetic energy of the air flow is no longer sufficient to carry the solid particles due to their mass.
  • the guide member is also formed as a separately arranged between the inner and outer layer of the multi-layer wall region arranged film strip.
  • film strips can be arranged in an advantageously simple manner both in sections and over the entire length of the double-layered wall region extending between the inner and outer layer.
  • the film strip can then be fixed over one of its longitudinal sides to at least one of the layers of the multilayer wall region.
  • the inner layer of the multilayer wall region is according to the invention formed by a separate strip of material, which is arranged in the interior of the package.
  • the material strip completely covers the guide element formed, for example, as a film strip, and in the region of both side edges it can be connected over its entire length to the packaging wall in each case by means of gluing or welding.
  • predetermined partial surfaces of the guide element are at least partially connected to at least one of the layers of the multi-layer wall region.
  • the guide element can be fixed in an advantageously simple manner in the multi-layered wall region.
  • this can be formed on the guide member two umströmbare from the air flow longitudinal sides, so that advantageously an improved ventilation when filling the package is guaranteed.
  • a cohesive connection can take place both between the inner layer and respectively associated sub-surfaces of the guide element and between the outer layer and respectively associated sub-surfaces of the guide element.
  • the packaging wall is a folded flat web with overlapping edge regions.
  • the mutually overlapping edge regions can be fixed to each other in a desired arrangement by means of a material connection such as welding and / or gluing.
  • a sufficient strength in the connection region of the packaging wall is given on the material connection, so that during the filling process in the packaging interior resulting positive pressure can be absorbed with advantage over the entire packaging wall, without causing any adverse effects.
  • Each packaging wall has in the air-permeable surface pieces perforations, which are preferably formed as rows of circular holes and / or slots in the inner or outer layer.
  • perforations are preferably formed as rows of circular holes and / or slots in the inner or outer layer.
  • At least in some areas of the air-permeable surface pieces of each layer and / or the guide element at least one spacer is arranged.
  • Each spacer additionally improves the escape of the air that has entered the packaging together with the contents from the packaging interior.
  • the spacers are preferably arranged between the guide member formed as an intermediate layer and a respectively adjacent layer, so that adhesion forces between the adjoining surfaces of the guide element and the layers can not occur. Such attractions could hinder passage of the airflow.
  • each spacer may be formed as an introduced into the layers and / or the guide member embossing.
  • the imprints preferably formed in the packaging longitudinal direction of the multilayer wall region of the packaging wall provide an advantageously simple possibility for maintaining a distance between, for example, two film webs contacting one another.
  • the plastic and permanent deformation of the layers required for producing an embossing can be effected in an advantageously simple manner by means of embossing tools.
  • the Embossing can be brought in sections as well as consistently in sub-areas such as a flat web, which can be used to form the packaging wall.
  • Fig. 1 shows a gusseted bag 1, the packaging wall 2, both in the bottom region 3 and in the head area 4, in particular by means of a weld 5, 5 'can be closed by a material fit.
  • the packaging wall 2 has a multi-layered wall region, which is formed from an inner layer 7 and an outer layer 8.
  • the inner layer 7 and the outer layer 8 each have an air-permeable sheet 9 in the longitudinal direction of the packaging.
  • the air permeability of the layers 7, 8 is ensured by perforations formed therein as perforations, which allow leakage of the air that has entered the packaging interior 11 during the filling process.
  • an intermediate layer 12 is arranged between the layers 7, 8 of the multi-layered wall region.
  • the intermediate layer 12 assumes the function of a guide element for the escaping air flow and at the same time a separating element for the entrained in the air flow solid particles of the filling material.
  • adhesion forces are in predetermined portions of the layers 7,8 than Embossments 13 formed spacers arranged.
  • Fig. 2 shows an embodiment according to the invention of a bag 23, which is shown to illustrate the structure in cross section.
  • the packaging wall 24 is made of a folded flat web whose edges are connected to one another via a fabric connection 25.
  • a separate material web is applied on the inside of the packaging wall 24 and forms the inner layer 27 of the bag.
  • a firm connection between the formed as a material strip inner layer 27 and the packaging wall 24 is ensured via the fabric joints 28, 28 '.
  • a trained as a separate film strip liner 30 is introduced, which is flowed around by the multilayer wall area passing air flow.
  • the intermediate layer 30 with predetermined partial surfaces is fastened to the layers 27, 29 of the multi-layered wall region via the fabric joints 31, 31 'in such a way that the intermediate layer forms two longitudinal sides which can be flowed around by the air flow.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
  • Laminated Bodies (AREA)
  • Buffer Packaging (AREA)

Claims (6)

  1. Emballage pour marchandise en vrac, en particulier sac (23) en film de plastique comportant une paroi d'emballage (24) enveloppant la marchandise en vrac et qui présente au moins une partie de paroi (26) réalisée en plusieurs couches faite d'au moins une couche intérieure (27) et d'au moins une couche extérieure (29), la partie de paroi (26) réalisée en plusieurs couches s'étendant dans un sens longitudinal de l'emballage et chaque couche (27, 29) présentant au moins un élément surfacique perméable à l'air, étant disposé entre la couche intérieure (27) et la couche extérieure (29) au moins un organe directeur pour le courant d'air traversant la couche perméable à l'air, l'organe directeur étant conçu pour dévier le courant d'air depuis au moins une section d'une couche intercalaire non imperméable à l'air (30) qui est une bande de film séparée s'étendant dans le sens longitudinal de l'emballage entre les couches (27, 29) de la partie de paroi (26) réalisée en plusieurs couches et autour de laquelle le flux peut passer au moins d'un côté,
    caractérisé en ce que
    la couche intérieure (27) de la partie de paroi (26) réalisée en plusieurs couches est constituée au moyen d'une bande de matériau séparée qui est disposée à l'intérieur de l'emballage et
    qu'au moins les éléments surfaciques perméables à l'air (9) de la couche intérieure (27) et de la couche extérieure (29) sont recouverts par la couche intermédiaire (30).
  2. Emballage selon la revendication 1, caractérisé en ce que des sous-surfaces prédéfinies de l'organe directeur sont raccordées du moins par sections à au moins une des couches (27, 29) de la partie de paroi en plusieurs couches (26).
  3. Emballage selon une des revendications 1 et 2, caractérisé en ce que la paroi de l'emballage (24) est une bande plate pliée dont les zones périphériques se chevauchant forment la partie de paroi (26) réalisée en plusieurs couches.
  4. Emballage selon une des revendications 1 à 3, caractérisé en ce que la paroi de l'emballage présente des perforations dans les éléments surfaciques perméables à l'air.
  5. Emballage selon une des revendications 1 à 4, caractérisé en ce que, au moins dans des zones partielles des éléments surfaciques perméables à l'air de chaque couche (27, 29) et/ou de l'organe directeur, au moins un écarteur est disposé.
  6. Emballage selon la revendication 5, caractérisé en ce que chaque écarteur est réalisé sous forme d'un gaufrage (13) pratiqué dans les couches (27, 29) et/ou l'organe directeur.
EP07722141A 2006-04-12 2007-03-30 Emballage pour matieres en vrac, notamment sac en feuille de plastique Not-in-force EP2004505B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006017229A DE102006017229B4 (de) 2006-04-12 2006-04-12 Verpackung für Schüttgüter, insbesondere Sack aus Kunststoffolie
PCT/DE2007/000583 WO2007115538A1 (fr) 2006-04-12 2007-03-30 Emballage pour matières en vrac, notamment sac en feuille de plastique

Publications (2)

Publication Number Publication Date
EP2004505A1 EP2004505A1 (fr) 2008-12-24
EP2004505B1 true EP2004505B1 (fr) 2012-02-22

Family

ID=38293127

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07722141A Not-in-force EP2004505B1 (fr) 2006-04-12 2007-03-30 Emballage pour matieres en vrac, notamment sac en feuille de plastique

Country Status (7)

Country Link
US (1) US20090123094A1 (fr)
EP (1) EP2004505B1 (fr)
AT (1) ATE546377T1 (fr)
DE (1) DE102006017229B4 (fr)
RU (1) RU2409506C2 (fr)
UA (1) UA88850C2 (fr)
WO (1) WO2007115538A1 (fr)

Families Citing this family (25)

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US8197139B2 (en) 2007-06-15 2012-06-12 S.C. Johnson Home Storage, Inc. Valve and valve strip for a reclosable container
US7874731B2 (en) * 2007-06-15 2011-01-25 S.C. Johnson Home Storage, Inc. Valve for a recloseable container
DE102007062814A1 (de) * 2007-12-21 2009-06-25 Nordenia Deutschland Halle Gmbh Verpackung
DE102008007384A1 (de) 2008-02-01 2009-08-06 Nordenia International Ag Verpackung, insbesondere für pulverförmiges, staubendes Füllgut, und Folie zur Herstellung einer solchen Verpackung
DE102008046173B4 (de) * 2008-09-06 2010-06-17 Nordfolien Gmbh Verpackungsbehälter aus Kunststofffolie
DE102008049391A1 (de) * 2008-09-27 2010-04-29 Nordfolien Gmbh Verpackung für Schüttgüter
RU2489334C2 (ru) * 2008-11-26 2013-08-10 Каратзис С.А. Упаковочный пакет
DE102009032756A1 (de) * 2009-07-11 2011-01-13 Nordfolien Gmbh Verpackungsbehälter mit Tragehilfe
BRPI1003492A2 (pt) * 2010-09-23 2013-01-01 Itap Bemis Ltda disposição em válvula de embalagem flexìvel, embalagem flexìvel e filme flexìvel de laminado de plástico contendo a válvula e métodos aperfeiçoados de fabricação de filme flexìvel de laminado de plástico contendo a válvula e de conformação e enchimento da embalagem flexìvel contendo a válvula
DE202011004802U1 (de) * 2011-04-02 2011-09-07 Nordfolien Gmbh Verpackung für Füllgüter
DE202011106386U1 (de) * 2011-10-06 2011-11-18 Nordfolien Gmbh Entlüftbarer Verpackungsbehälter
US9555947B2 (en) 2012-05-31 2017-01-31 Berry Plastics Corporation Vented steam cooking package
EP2792609A1 (fr) 2013-04-18 2014-10-22 Nordfolien GmbH Récipient d'emballage pour produits en vrac
RU2672139C2 (ru) * 2014-03-06 2018-11-12 Амкор Флексиблс Италия Срл Упаковочный пакет с легким вытеканием
DE202014007340U1 (de) 2014-09-15 2015-12-18 Bischof + Klein Gmbh & Co. Kg Flexibles Verpackungsbehältnis
JP5913699B1 (ja) * 2015-07-24 2016-04-27 トタニ技研工業株式会社 プラスチック袋およびその製袋機
DE102016220428A1 (de) 2016-09-27 2018-03-29 Windmöller & Hölscher Kg Ventilsack sowie Verfahren und System zur Herstellung eines Ventilsacks
US20200122894A1 (en) * 2016-09-27 2020-04-23 Windmöller & Hölscher Kg Plastic Bag, in Particular FFS Bag, and Method and Device for Producing and Filling a Bag
DE102017204533A1 (de) * 2017-03-17 2018-09-20 Windmöller & Hölscher Kg Kunststoffsack, insbesondere FFS-Sack sowie Verfahren und Vorrichtung zurHerstellung und zum Befüllen eines Sacks
WO2018156308A1 (fr) * 2017-02-21 2018-08-30 The Procter & Gamble Company Procédés de fabrication de récipients souples ventilés
US11111036B2 (en) 2017-02-22 2021-09-07 The Procter & Gamble Company Methods of making flexible containers with structural support frames
US11338975B2 (en) 2018-05-16 2022-05-24 The Procter & Gamble Company Container blanks for flexible packages and methods of making flexible packages
WO2020153910A1 (fr) * 2019-01-21 2020-07-30 Suphantarida Nuttawat Sac perforé destiné à des matériaux de construction
USD1011183S1 (en) * 2019-08-14 2024-01-16 Saint-Gobain Placo Sas Powder packaging
US20230054277A1 (en) * 2021-08-12 2023-02-23 Cj Cheiljedang Corporation Pouch for retort food

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JP4059753B2 (ja) * 2002-11-14 2008-03-12 大和グラビヤ株式会社 収納袋
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Also Published As

Publication number Publication date
DE102006017229B4 (de) 2008-06-05
UA88850C2 (ru) 2009-11-25
RU2409506C2 (ru) 2011-01-20
DE102006017229A1 (de) 2007-10-18
RU2008144592A (ru) 2010-05-20
EP2004505A1 (fr) 2008-12-24
WO2007115538A1 (fr) 2007-10-18
ATE546377T1 (de) 2012-03-15
US20090123094A1 (en) 2009-05-14

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