EP0444261B1 - Récipient d'emballage flexible en forme de sac, fabriqué à partir d'une feuille de matière plastique - Google Patents

Récipient d'emballage flexible en forme de sac, fabriqué à partir d'une feuille de matière plastique Download PDF

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Publication number
EP0444261B1
EP0444261B1 EP90123842A EP90123842A EP0444261B1 EP 0444261 B1 EP0444261 B1 EP 0444261B1 EP 90123842 A EP90123842 A EP 90123842A EP 90123842 A EP90123842 A EP 90123842A EP 0444261 B1 EP0444261 B1 EP 0444261B1
Authority
EP
European Patent Office
Prior art keywords
wall part
air
bag
packaging container
wall
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
EP90123842A
Other languages
German (de)
English (en)
Other versions
EP0444261A1 (fr
Inventor
Paul Diakonow
Ralf Wesselmann
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.)
Bischof and Klein SE and Co KG
Original Assignee
Bischof and Klein SE 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 Bischof and Klein SE and Co KG filed Critical Bischof and Klein SE and Co KG
Publication of EP0444261A1 publication Critical patent/EP0444261A1/fr
Application granted granted Critical
Publication of EP0444261B1 publication Critical patent/EP0444261B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 flexible packaging container in the form of a sack or bag made of plastic film or the like.
  • Air-impermeable material with an air outlet area in a sack wall in which the sack material is provided as an outer wall part with perforations for an air passage from the filling space of the sack and the perforated sack material on the inside air-permeable inner wall part is covered.
  • Flexible packaging containers of this type in the form of a sack or bag are known in numerous embodiments, the head end and the bottom of the sack being able to be closed by simple end weld seams and the like. Instead, the two bag ends can also be closed by a molded bottom, for example a cross bottom with corner inserts and bottom side envelopes lying opposite one another in pairs and, if appropriate, an outer bottom cover sheet connected to them.
  • the sack material can be single-layer or multi-layer and consists primarily of plastic film or a plastic ribbon fabric, to give the packaging container its airtight character.
  • Such packaging containers offer the filling material above all a high level of moisture protection, as is desired for the storage of numerous filling goods.
  • the invention has for its object to provide a flexible packaging container in the form of a sack or bag of the type mentioned, in which an effective venting process can be maintained when filling the packaging container using pneumatic filling devices.
  • the inner wall part in turn consists of air-impermeable material such as plastic film and is also provided with perforations for its air-permeable design, but which have a design and arrangement for a larger air passage than the perforations of the outer wall part in the air outlet area of the sack wall , and that the inner wall part and the outer wall part together delimit a closed air chamber on all sides.
  • the air chamber delimited by these is filled with air during the filling process due to the different air passages of the inner wall part and outer wall part.
  • valve bag made of plastic film designated as a whole by 1
  • the valve bag 1 is closed at its head end 2 and at its bottom 3 by a transverse weld seam or a molded bottom.
  • a filling valve 4 is incorporated into the sack.
  • the bag wall 5 is formed by an initially flat piece of plastic film which, as can be seen in FIG. 2, is closed by a double longitudinal seam to form a bag tube.
  • the double longitudinal seam comprises two individual longitudinal seams 6 and 7, which connect mutually correspondingly overlapping longitudinal edge parts of the sack wall 5. This forms an outer wall part 8 and an inner wall part 9 of the sack wall 5.
  • the wall parts 8 and 9 define an air outlet area of the bag wall 5, in which air outlet openings or perforations 10 and 11 are incorporated into the outer wall part 8 and the inner wall part 9 of the bag wall 5, respectively.
  • the air passage caused in this way is dimensioned considerably larger in the inner wall part 9 than in the outer wall part. This is achieved, for example, in that, assuming the same size of the perforations 10, 11, a larger number of perforations 11 is provided in the inner wall part 9 than perforations 10 in the outer wall part 8, with the rest being uniformly distributed over the air outlet area.
  • the air passage through the inner wall part 9 can be twice as large as through the outer wall part 8.
  • the outer wall part 8 and the inner wall part 9 together delimit an air chamber 12 which passes through the longitudinal seams 6 and 7 at their longitudinal edges and at their transverse ends the closures of the head end 2 and of the bottom 3 is closed.
  • the outer wall part 8 and the inner wall part 9 are held at a mutual distance by spacers 13 arranged in the air chamber 12, so that a flat abutment of the two wall parts 8, 9 is always avoided.
  • these spacers 13 are formed in a simple manner from material characteristics which are directed towards the air chamber 12 from at least one of the two wall parts 8, 9.
  • an air outlet area can be formed at another point of the bag 1 by attaching a separate strip of material on the inside or outside of the bag wall 5 by longitudinal seams corresponding to the longitudinal seams 6 and 7 to form the air chamber 12, which is closed on all sides . It is essential that the outer wall part 8 and the inner wall part 9 always have essentially the same material properties, in particular with regard to their strength and their elongation behavior. This condition is of course fulfilled from the outset in the exemplary embodiment shown, in which the two wall parts 8 and 9 are formed by overlapping the side edges of the sack wall 5.
  • Fig. 1 the venting process during the filling of the bag 1 is schematically illustrated.
  • a highly air-enriched filling material 14 (100 l / min.) Is filled in according to the arrow 4a with an assumed pressure of 0.2 bar.
  • the air passage of the outer wall part 8 is set so that it z. B. 50 ltr./min. is while the air passage of the inner wall part 9 z. B. 100 l / min. is.
  • more air is fed into the air chamber 12 through the inner wall part than can escape to the outside through the outer wall part 8, as is symbolized by the flow arrows 15 and 16. Excess air from the air chamber 12 thus flows back into the bag interior, as illustrated by flow arrows 17.
  • a negative pressure is created, as is shown by arrow 18.
  • the pressure can be 0.05 bar compared to the pressure of 0.2 bar in the air chamber 12.
  • the air circulation generated in this way ensures effective ventilation of the bag 1 during the entire filling process. Any annoying dust escapes could be prevented in a manner known per se by attaching filter materials at a suitable point in the ventilation area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)

Claims (7)

  1. Récipient d'emballage flexible (1) en forme de sac ou de sachet en pellicule de matière plastique ou matière analogue imperméable à l'air, comportant une zone de sortie d'air dans une paroi du sac dans laquelle la matière du sac est pourvue, en tant que partie de paroi extérieure (8), de perforations (10) en vue d'un passage de l'air hors de l'espace de remplissage du sac et la matière perforée du sac est recouverte intérieurement par une partie de paroi intérieure (9) perméable à l'air, caractérisé en ce que la partie de paroi intérieure (9) est formée, pour sa part, d'une matière imperméable à l'air telle qu'une pellicule de matière plastique et est pourvue également de perforations (11) en vue de permettre le passage de l'air, ces perforations présentant cependant une configuration et une disposition propres à assurer un passage de l'air plus important que les perforations (10) de la partie de paroi extérieure (8) dans la zone de sortie d'air de la paroi de sac (5) et que la partie de paroi intérieure (9) ainsi que la partie de paroi extérieure (8) délimitent ensemble une chambre d'air (12) fermée de tous côtés à sa périphérie.
  2. Récipient d'emballage suivant la revendication 1, caractérisé en ce que le passage d'air de la partie de paroi intérieure (9) est beaucoup plus important que le passage d'air de la partie de paroi extérieure (8).
  3. Récipient d'emballage suivant la revendication 2, caractérisé en ce que la partie de paroi intérieure (9) et la partie de paroi extérieure (8) sont maintenues espacées l'une de l'autre par des moyens d'entretoisement (13) disposés dans la chambre d'air.
  4. Récipient d'emballage suivant la revendication 3, caractérisé en ce que les moyens d'entretoisement (13) entre la partie de paroi intérieure (9) et la partie de paroi extérieure (8) sont formés par des gaufrures qui sont orientées à partir d'au moins une des deux parties de parois (8, 9) vers la chambre d'air.
  5. Récipient d'emballage suivant l'une quelconque des revendications 1 à 4, caractérisé en ce que la partie de paroi intérieure (9) et la partie de paroi extérieure (8) possèdent en substance les mêmes propriétés, en particulier en ce qui concerne la solidité et la tenue à l'allongement de la matière.
  6. Récipient d'emballage suivant l'une quelconque des revendications 1 à 5, caractérisé en ce que la zone de sortie d'air est formée par une bande longitudinale de la paroi de sac (5) qui s'étend entre l'extrémité de tête (2) et le fond (3) du sac (1).
  7. Récipient d'emballage suivant la revendication 6, caractérisé en ce que la bande longitudinale est limitée à ses deux bords longitudinaux chaque fois par une soudure longitudinale (6, 7) reliant l'une à l'autre la partie de paroi intérieure (9) et la partie de paroi extérieure (8).
EP90123842A 1990-02-28 1990-12-11 Récipient d'emballage flexible en forme de sac, fabriqué à partir d'une feuille de matière plastique Expired - Lifetime EP0444261B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9002330U 1990-02-28
DE9002330U DE9002330U1 (de) 1990-02-28 1990-02-28 Flexibles Verpackungsbehältnis in Form eines Sackes oder Beutels aus Kunststoffolie

Publications (2)

Publication Number Publication Date
EP0444261A1 EP0444261A1 (fr) 1991-09-04
EP0444261B1 true EP0444261B1 (fr) 1993-08-11

Family

ID=6851448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90123842A Expired - Lifetime EP0444261B1 (fr) 1990-02-28 1990-12-11 Récipient d'emballage flexible en forme de sac, fabriqué à partir d'une feuille de matière plastique

Country Status (3)

Country Link
EP (1) EP0444261B1 (fr)
DE (2) DE9002330U1 (fr)
ES (1) ES2045734T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008046173A1 (de) * 2008-09-06 2010-04-08 Nordfolien Gmbh Verpackungsbehälter aus Kunststofffolie
US7927015B2 (en) 2004-05-27 2011-04-19 Jürgen Heinemeier Plastic bag with overpressure relief
WO2011051739A1 (fr) 2009-10-26 2011-05-05 Mandzsu Zoltan Récipient d'emballage amélioré avec relief de surpression, procédé d'emballage et système

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5397707A (en) * 1993-09-30 1995-03-14 Verfaillie; Magda Receptacle with porous welding the use and the manufacture thereof
US5856839A (en) * 1995-04-27 1999-01-05 Hewlett-Packard Company Ink supply having an integral pump
US5900896A (en) * 1995-04-27 1999-05-04 Hewlett-Packard Company Ink cartridge adapters
DE29807807U1 (de) * 1998-04-03 1999-08-12 Bischof Und Klein Gmbh & Co, 49525 Lengerich Packmittel in Form eines Sackes oder Beutels aus Kunststoffolie o.dgl. luftundurchlässigem Material
WO2007006060A1 (fr) * 2005-07-08 2007-01-18 Starlinger & Co Gesellschaft M.B.H. Sac pouvant etre aere
DE102006017229B4 (de) 2006-04-12 2008-06-05 Nordfolien Gmbh Verpackung für Schüttgüter, insbesondere Sack aus Kunststoffolie
US20080144979A1 (en) * 2006-11-06 2008-06-19 Marko I.R.D.C. Plastic bag with improved air evacuation structure
DE202012006946U1 (de) * 2012-07-18 2012-08-22 Nordfolien Gmbh Verpackungsbehälter mit Entlüftungsfunktion
DE102019130409A1 (de) 2019-11-12 2021-05-12 Rkw Se Kaschierverbund

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1212857B (de) * 1962-04-25 1966-03-17 Olin Mathieson Ventilsack zur Aufnahme und Verpackung von schuettbarem Gut
US3302859A (en) * 1964-12-21 1967-02-07 Bemis Co Inc Bag
DE1908440A1 (de) * 1969-02-20 1970-09-10 Osthushenrich Kg Sack,insbesondere Ventilsack
GB1401713A (en) * 1973-01-17 1975-07-30 British Visqueen Ltd Plastics sack
DE8127809U1 (de) * 1981-09-23 1982-01-07 Robert Bosch Gmbh, 7000 Stuttgart Beutelpackung fuer pulverige Fuellgueter
EP0126816A1 (fr) * 1983-05-25 1984-12-05 St. Regis Corporation Sacs, en particulier sacs à parois multiples
DE3447277A1 (de) * 1984-12-22 1986-06-26 Nordenia Kunststoffe Peter Mager KG, 2841 Steinfeld Selbstentlueftender sack aus kunststoffolie

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7927015B2 (en) 2004-05-27 2011-04-19 Jürgen Heinemeier Plastic bag with overpressure relief
US8371752B2 (en) 2004-05-27 2013-02-12 Juergen Heinemeier Plastic bag with overpressure relief
DE102008046173A1 (de) * 2008-09-06 2010-04-08 Nordfolien Gmbh Verpackungsbehälter aus Kunststofffolie
DE102008046173B4 (de) * 2008-09-06 2010-06-17 Nordfolien Gmbh Verpackungsbehälter aus Kunststofffolie
WO2011051739A1 (fr) 2009-10-26 2011-05-05 Mandzsu Zoltan Récipient d'emballage amélioré avec relief de surpression, procédé d'emballage et système

Also Published As

Publication number Publication date
ES2045734T3 (es) 1994-01-16
DE9002330U1 (de) 1990-05-03
EP0444261A1 (fr) 1991-09-04
DE59002323D1 (de) 1993-09-16

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