EP1725466A1 - Element d'emballage en forme de sac a plusieurs parois - Google Patents

Element d'emballage en forme de sac a plusieurs parois

Info

Publication number
EP1725466A1
EP1725466A1 EP05715923A EP05715923A EP1725466A1 EP 1725466 A1 EP1725466 A1 EP 1725466A1 EP 05715923 A EP05715923 A EP 05715923A EP 05715923 A EP05715923 A EP 05715923A EP 1725466 A1 EP1725466 A1 EP 1725466A1
Authority
EP
European Patent Office
Prior art keywords
wall
packaging means
means according
air
packaging
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.)
Granted
Application number
EP05715923A
Other languages
German (de)
English (en)
Other versions
EP1725466B1 (fr
Inventor
Franz Lindlbauer
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.)
Wacker Chemie AG
Original Assignee
Wacker Polymer Systems GmbH and Co KG
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 Wacker Polymer Systems GmbH and Co KG filed Critical Wacker Polymer Systems GmbH and Co KG
Publication of EP1725466A1 publication Critical patent/EP1725466A1/fr
Application granted granted Critical
Publication of EP1725466B1 publication Critical patent/EP1725466B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/04—Bags or like containers made of paper and having structural provision for thickness of contents with multiple walls

Definitions

  • the invention relates to a multi-walled, bag-shaped packaging means for particulate materials, in particular powdery materials.
  • Powdery materials such as polymer powder
  • valve bags are packaged and sold in so-called valve bags.
  • the filling takes place via filling machines, which run at high throughput and fill the powder with a lot of air in the fluidized state into the sack.
  • the air must escape from the sack as quickly as possible.
  • paper sacks made of kraft paper were used as packaging material because the air can escape through the paper, while the powdery filling material is retained.
  • paper sacks have the disadvantage that they do not hold water and moisture adequately and are sensitive to mechanical stress.
  • multi-walled valve bags which consist of a paper bag on the inside, which is surrounded on the outside by a bag made of plastic film, usually polyethylene film.
  • plastic film usually polyethylene film.
  • the plastic film enveloping the paper bag is at least one
  • the invention relates to a multilayer, bag-like packaging means 1, which is designed such that it has a wide front side 3 and rear side 2, which are connected to narrow side surfaces 4 and 5, and is closed at the upper end 6 and lower end 7, being at the top
  • the packaging means has an inner wall 9 made of air-permeable material, which is surrounded by an outer wall 10 made of air-impermeable material, characterized in that a) on the front 3 and / or the back 2, the Outer wall 10 overlaps a partial area 11 of up to 50% of the total area, b) in the overlap area 11 the inner layer 10a of the outer wall 10 is perforated, c) at the edges 12 and 13 of the overlap area 11 the two layers 10a and 10b lying one above the other by means of seams 14 and 15 are connected to one another, d) at one or both edges 12 and 13 the connection is interrupted in a region 16 which comprises 10 to 50% of the total length.
  • Suitable air-permeable materials for the inner layer 9 are paper, woven materials or nonwovens made of synthetic fibers or natural fibers. Paper, for example conventional kraft papers with a basis weight of 30 to 120 g / m 2 , preferably 60 to 90 g / m 2 , is preferred.
  • the plastic films customary in the packaging sector preferably polyolefin films, such as polyethylene or polypropylene films, and PVC films are suitable for the air-impermeable outer walls 10. The film thickness is generally 20 to 200 microns.
  • the packaging means 1 has a cuboid shape when filled.
  • the length is preferably between 30 to 120 cm, particularly preferably 60 to 100 cm.
  • the width is preferably 20 to 80 cm, preferably 40 to 60 cm.
  • the width of the side parts is preferably between 5 and 30 cm, particularly preferably 10 to 20 cm.
  • the opening (filling (valve) opening) 8 at the upper end of the packaging means 1 preferably has a round or square cross section and is dimensioned such that the sack 1 can be filled via a filling nozzle. Generally, diameters of 5 to 20 cm are sufficient.
  • the inside of the opening 8 is generally coated with a plastic material, preferably hot melt and / or thermoplastic (for example polyethylene). This enables the opening to be welded using ultrasound or heat.
  • the inner, air-permeable material 9 is connected to the outer, air-impermeable material 10 by gluing.
  • a paper inner layer 9 is preferably glued to an outer plastic film 10 only at the upper end 6 and at the bottom 7.
  • the manufacturing process is such that the individual layers of the sack are moved from the roll into the production line and brought together. An endless hose is formed and cut to length accordingly. Then the ends are folded, the
  • Valve opening inserted and glued. Finally, a cover sheet is glued to both ends of the sack.
  • the outer material 10 generally a plastic film, overlaps either on the front 3 or on the front
  • the outer wall 10 preferably overlaps only on one of the two sides, particularly preferably only on the back 2, that is the side on which the sack generally rests. In a further preferred embodiment, the plastic film overlaps over the entire length.
  • the overlap area 11 is preferably 10 to 50% of the total area of the respective side.
  • the inner layer 10a of the plastic film is perforated in the overlap region 11.
  • the perforation density is generally 0.5 to 5 holes per cm 2 .
  • the perforation can be by means of needling over the entire overlap area 11 or a partial area. Preferably 10 to 50% of the area of the overlap area 11 is provided with the perforation. Perforation is preferably carried out over the entire length of the overlap area. It is particularly preferred to the
  • Edges 12 and 13 of the overlap area 11 are kept at a distance of 0.5 to 10 cm, the distance from the edge 12 of the overlap area, which is open, preferably being 2 to 10 cm.
  • the hole size, perforation density and the perforated area essentially depend on how high the air outlet must be when filling. Depending on requirements, these sizes can be set by a specialist within the above-mentioned limits.
  • connection is interrupted at one or both edges, preferably only at one edge.
  • connection is broken in a region 16 which comprises 10 to 50% of the total length.
  • the interruption is preferably in the upper half, particularly preferably in the upper third of the packaging means 1, since the residual air is at the top during the filling process.
  • this construction ensures that the air can escape quickly during filling, despite the outer walls made of plastic film.
  • the packaging material is suitable for the transport and storage of particulate materials, such as granules, fibers or fine or coarse powders.
  • the packaging material is particularly suitable for moisture-sensitive goods.
  • polymer powder in particular water-redispersible polymer powder (dispersion powder), or also highly disperse silica, cement, gypsum, cement or gypsum-containing dry mixtures such as dry mortar, flour, animal feed, water-soluble, powdery substances such as cement plasticizers, thickeners.
  • the sack can be labeled, printed or provided with labels in the usual way.
  • Figure 1 shows a perspective view of sack 1 in the empty state.
  • FIG. 2 shows an enlarged partial section according to area II in FIG. 1.
  • FIG. 1 shows a perspective illustration of sack 1 in the empty state, which has a first broad side 2 (rear) and a second broad side 3 (front), a first narrow side surface 4 and a second narrow side surface 5.
  • the sack is closed on the end faces 6 and 7, a filling opening 8 being provided in the region of the end face 6 (upper end) for receiving a filling tube (not shown here) for filling the sack 1.
  • the sack 1 has an air-permeable inner wall 9, which is surrounded by an air-impermeable outer wall 10.
  • the outer wall 10 is in one
  • Section 11 of the first broad side 2 is designed to overlap, the edges 12 and 13 of the overlap being connected airtight to the outer wall 10 by means of seams 14 and 15, for example weld seams.
  • the seam 14 is preferably interrupted in the upper third in a region 16, as a result of which an air outlet opening 17 is formed.
  • the inner outer wall area 10 a of overlapping partial area 11 is provided near the seam 15 with a perforation 18, which allows the passage of air from the inside of the bag 1 into the channel 19, formed by the superimposed outer wall areas 10a and 10b and the seams 14 and 15 of the overlap, via the air outlet opening 17 outdoors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
  • Making Paper Articles (AREA)
  • Cartons (AREA)

Abstract

L'invention concerne un élément d'emballage en forme de sac, multicouche (1), présentant un côté avant large (3) et un côté arrière (2) connectés à des surfaces latérales étroites (4, 5), fermé sur le côté supérieur (6) et sur le côté inférieur (7), présentant par ailleurs une ouverture (8) destinée au remplissage sur l'extrémité supérieure (6). Ledit élément d'emballage présente également une paroi intérieure (9) réalisée dans un matériau perméable à l'air, entourée par une paroi extérieure (10) réalisée dans un matériau étanche à l'air. Ledit élément d'emballage est caractérisé en ce que a) la paroi extérieure (10) chevauche le côté avant (3) et/ou le côté arrière (2) sur une zone allant jusqu'à 50 % de la surface totale; b) la couche intérieure (10a) de la paroi extérieure (10) est perforée dans la zone de chevauchement (11); c) les deux couches superposées (10a, 10b) sont reliées par l'intermédiaire de coutures (14, 15) sur les bords (12, 13) de la zone de chevauchement (11); et d) la liaison est interrompue sur un des deux bords (12, 13) dans une zone allant jusqu'à 10 à 50 % de la longueur totale.
EP05715923A 2004-03-18 2005-03-10 Element d'emballage en forme de sac a plusieurs parois Not-in-force EP1725466B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004013469A DE102004013469A1 (de) 2004-03-18 2004-03-18 Mehrwandiges, sackförmiges Verpackungsmittel
PCT/EP2005/002545 WO2005092724A1 (fr) 2004-03-18 2005-03-10 Element d'emballage en forme de sac a plusieurs parois

Publications (2)

Publication Number Publication Date
EP1725466A1 true EP1725466A1 (fr) 2006-11-29
EP1725466B1 EP1725466B1 (fr) 2007-10-10

Family

ID=34962879

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05715923A Not-in-force EP1725466B1 (fr) 2004-03-18 2005-03-10 Element d'emballage en forme de sac a plusieurs parois

Country Status (9)

Country Link
US (1) US20070181459A1 (fr)
EP (1) EP1725466B1 (fr)
JP (1) JP2007535447A (fr)
CN (1) CN1934005B (fr)
AT (1) ATE375307T1 (fr)
DE (2) DE102004013469A1 (fr)
ES (1) ES2293542T3 (fr)
TW (1) TWI303615B (fr)
WO (1) WO2005092724A1 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT1607339E (pt) 2004-05-27 2008-06-30 Rkw Ag Saco de material plástico com ventilação de sobrepressão
WO2008058079A2 (fr) * 2006-11-06 2008-05-15 Marko I.R.D.C. Sac en plastique avec structure optimisée d'évacuation d'air
DE202006019054U1 (de) * 2006-12-18 2008-04-30 Bischof + Klein Gmbh & Co. Kg Verpackungsbehältnis in Beutel- oder Sackform
DE102007018579B4 (de) 2007-04-18 2012-03-15 Abts- Advanced Bag Technology & Service Gmbh Zementsack und Herstellverfahren
DE102007063783B3 (de) * 2007-04-18 2013-06-27 Abts- Advanced Bag Technology & Service Gmbh Zementsack mit speziellem Laminat
DE102007063784B3 (de) * 2007-04-18 2013-06-27 Abts- Advanced Bag Technology & Service Gmbh Zementsack mit Öffnungen
EP2088088B1 (fr) * 2008-02-06 2012-10-31 Bischof+Klein GmbH & Co. KG Récipient d'emballage sous forme de sachet ou sac
DE102009032756A1 (de) * 2009-07-11 2011-01-13 Nordfolien Gmbh Verpackungsbehälter mit Tragehilfe
DE102009036556A1 (de) * 2009-08-10 2011-02-17 Windmöller & Hölscher Kg Verfahren und Vorrichtung zur Herstellung eines Sacks oder eines Beutels mit Vliesmaterial sowie Sack oder Beutel, welcher Vliesmaterial umfasst
HUP0900669A2 (en) 2009-10-26 2010-07-28 Zoltan Mandzsu Plastic packing bag with overpressure relief, packing method and system
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
DE202011106386U1 (de) 2011-10-06 2011-11-18 Nordfolien Gmbh Entlüftbarer Verpackungsbehälter
DE102011114969A1 (de) 2011-10-06 2013-04-11 Nordfolien Gmbh Verpackungsbehälter mit Entlüftungskanal
AT512806B1 (de) * 2012-04-23 2014-01-15 Bsw Machinery Handels Gmbh Gewebe für die Herstellung von Säcken
DE202013004058U1 (de) 2013-04-30 2014-08-01 Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh Papiersack
DE202014000194U1 (de) * 2014-01-10 2015-04-14 Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh Papiersack
NO2768978T3 (fr) * 2014-02-20 2018-04-21
ES2582611B1 (es) * 2015-03-13 2017-06-07 Industrias Bolcar, S.A. Saco multicapa con salida de presión
WO2016166777A1 (fr) * 2015-04-17 2016-10-20 Fiorini Packaging S.P.A. Sac résistant à l'eau
US10633285B2 (en) 2015-08-31 2020-04-28 Wacker Chemie Ag Additive pack
BR202018011387Y1 (pt) 2018-06-05 2024-02-27 Klabin S.A. Disposição construtiva em saco de papel
BR202018011357U2 (pt) 2018-06-05 2019-12-24 Klabin S A disposição construtiva em saco de papel
WO2020153910A1 (fr) * 2019-01-21 2020-07-30 Suphantarida Nuttawat Sac perforé destiné à des matériaux de construction

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DE1486733A1 (de) * 1965-09-25 1969-06-04 Windmoeller & Hoelscher Kunststoff-Ventilsack
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Also Published As

Publication number Publication date
CN1934005B (zh) 2010-06-02
TWI303615B (en) 2008-12-01
ES2293542T3 (es) 2008-03-16
ATE375307T1 (de) 2007-10-15
DE102004013469A1 (de) 2005-10-06
US20070181459A1 (en) 2007-08-09
CN1934005A (zh) 2007-03-21
TW200531893A (en) 2005-10-01
EP1725466B1 (fr) 2007-10-10
DE502005001681D1 (de) 2007-11-22
JP2007535447A (ja) 2007-12-06
WO2005092724A1 (fr) 2005-10-06

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