EP0058805B1 - Procédé et dispositif permettant de remplir des emballages souples tels que des sacs - Google Patents

Procédé et dispositif permettant de remplir des emballages souples tels que des sacs Download PDF

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Publication number
EP0058805B1
EP0058805B1 EP19810401810 EP81401810A EP0058805B1 EP 0058805 B1 EP0058805 B1 EP 0058805B1 EP 19810401810 EP19810401810 EP 19810401810 EP 81401810 A EP81401810 A EP 81401810A EP 0058805 B1 EP0058805 B1 EP 0058805B1
Authority
EP
European Patent Office
Prior art keywords
package
gas
feed
stream
air
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
Application number
EP19810401810
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0058805A1 (fr
Inventor
Jean Duperray
René Guillotin
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.)
Generale Des Engrais Sa Ste
Original Assignee
Generale Des Engrais Sa Ste
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 Generale Des Engrais Sa Ste filed Critical Generale Des Engrais Sa Ste
Publication of EP0058805A1 publication Critical patent/EP0058805A1/fr
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Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/28—Controlling escape of air or dust from containers or receptacles during filling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
    • B65B39/04—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers having air-escape, or air-withdrawal, passages

Definitions

  • the present invention relates to a method and a device for bagging all types of products, in particular divided solid products, granules or powders in flexible packaging, a device which will be called in what follows bagging mouth.
  • the invention is particularly applicable to flexible packaging of the bag or pocket type in the category known as open mouth, that is to say which are filled from above and whose opening is made over the entire upper surface, or also on bags or similar pockets called pre-welded, which have a partially closed opening.
  • the invention which is particularly advantageous in filling bags of several hundred kilos, applies however to bags having capacities ranging from micro-packaging to maxi-bag.
  • blower and the suction alternate in the same tube; these devices, moreover, require the traditional use of collars or clamping bars to avoid collapse of the top of the bag, hence the presence of jacks, eccentrics, etc., and a system for stopping and controlling the various operations intermittent blower and suction.
  • closed circuits are used as in FR-A No 2194607 or US-A No 3040490.
  • recirculation of the displaced air is established as in US-A No 3040490.
  • One of the aims of the invention is to increase the filling rates by simplifying the gestures necessary for positioning before filling. This gain is all the more important as the flexible bags are larger, bulky and difficult to handle.
  • Another aim is to significantly reduce the investment costs of bagging stations.
  • the object of the invention is therefore a method and a device for filling flexible packaging from above, such as bags of easily flowing products, such as divided, powdered or granulated solids, without there being any contact between the bag and the filling mouth.
  • a method of filling from the top of a flexible package with solid products flowing easily by means of a gravimetric feed characterized in that one associates by means of supplying an open circuit comprising a flow of gas descending inside the flexible packaging, so as to permanently create an overpressure inside the packaging which keeps the packaging inflated and to generate a current of air permanently escaping to the outside which keeps the edges of the packaging away from the supply means.
  • this first downward flow is associated with a second upward flow independent of the downward flow so as to create a hood effect serving to take in the surrounding air with which the excess gas from the downward flow mixes.
  • the gas in a simple manner, consists of pressurized or ventilated air, which makes it possible to save compressed air and eliminate the drawbacks which result therefrom.
  • the method according to the invention can be implemented by a device which also forms part of the invention and which is characterized by the fact that it comprises a hopper for feeding solid products by gravimetry, at least one tube connected , on the one hand, to the lower part of the hopper and, on the other hand, to a pressurized or ventilated gas generator to obtain a descending gas flow and at least one other external tube, for example concentric to the first (s) tube (s), and connected to a suction device to obtain an ascending gas flow, the bagging mouth being solely constituted by the tubes, excluding of any device for clamping the opening of a flexible package against said bagging mouth.
  • the gas generator in particular of compressed or ventilated air, is generally of the turbine type and can deliver several thousand cubic meters per hour. According to one embodiment, two generators can be used which flow in opposite directions to obtain the ascending gas flow and the descending gas flow.
  • the flexible packaging is placed under the bagging mouth device, which penetrates into the interior, as will be seen in FIG. 1, without clamping contact with the mouthpiece.
  • the flexible packaging is in a state of permanent overpressure and, therefore, stands upright, open and swollen with excess air, and, which is an advantage of the invention, even when the diameter of the opening of the bag is very much larger than that of the packaging mouth.
  • the excess air is evacuated through the external suction tube after mixing with the surrounding air.
  • the bag once full, is evacuated without difficulty, because there is no mechanical member for clamping or spacing the bag during filling.
  • the placement of a new bag and its shaping are, for the same reasons, instantaneous.
  • the median tube is connected to a source of ventilated or pressurized air in itself, avoiding any source of compressed air which cannot be used in the open mouth bag technique.
  • a source of ventilated or pressurized air in itself, avoiding any source of compressed air which cannot be used in the open mouth bag technique.
  • compressed air when it relaxes, is only effective in a closed enclosure.
  • blowers of 1200 to 3000 m 3 / h were used to inflate a 500 liter, cylindrical, flexible material package.
  • the suction tube is connected to a device provided with adequate sanitation and not forming part of the invention.
  • a network of pipes is preferably used, the air of which is sucked in by a paddle wheel turbine.
  • the arrangements and dimensions of the tubes are chosen according to the use, as will be seen in the examples below, the arrangement in concentric tubes offering the advantage of being compact and of offering construction facilities.
  • the diameter of the feed tube is not necessarily strictly adjusted to the opening of the bag, which does not need fixing means, unlike the technique using compressed air.
  • the internal tube serving to supply the gas, and in particular the air is of frustoconical shape, the smallest section of the truncated cone being disposed furthest downstream in the sense of gas supply.
  • the device according to the invention advantageously has a fixed shaping guide, presettable in all directions, arranged under the bagging mouth, intended to wrap the packaging on three of its faces and to keep it in place and to improve. its stability.
  • the device according to the invention may also have at least one additional internal tube, making it possible to introduce other products, the mixing of which with the main product is carried out during filling.
  • bagging can be carried out, depending on the case, either by net weighings also called pre-weighed, or by gross weighings also called post-weighed.
  • the members necessary for weighing are placed upstream of the filling device, and it is then advantageous to provide two separate tubes for the supply of product and for the supply of pressurized or ventilated air.
  • the packaging being filled rests directly on the platform of the scale. In this case, advantageously, only a central tube is provided for the supply of product and the supply of compressed or ventilated air, which is particularly economical.
  • a variant of the device of the invention is advantageously produced, shown in exploded view in FIG. 3a.
  • the product descends through the central tube 1; the air from the fan 4 supplied by 1 is permanently blown, thus mixing with the product.
  • This construction variant of the invention is economical, since the central tube 1 replaces the tubes 1 and 2 of the general device; it applies with advantage in the case of non-fluidisable products, granules or powders.
  • the central tube 1 which makes it possible to introduce the product, communicates with the blowing of air 4 and also with other annexed pipes 7 and 8 by which other products are introduced, the mixing of which is carried out during the filling operation.
  • the gas chosen may possibly have bactericidal properties.
  • a non-negligible advantage of the invention is that it is possible to fill, by a single device, bags to be filled from above, whatever the diameter of their opening.
  • the invention has been applied to the filling of bags containing several hundred kilos of fertilizer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Supply Of Fluid Materials To The Packaging Location (AREA)
EP19810401810 1980-11-28 1981-11-18 Procédé et dispositif permettant de remplir des emballages souples tels que des sacs Expired EP0058805B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8025263A FR2495102A1 (fr) 1980-11-28 1980-11-28 Procede et dispositif permettant de remplir des emballages souples tels que des sacs
FR8025263 1980-11-28

Publications (2)

Publication Number Publication Date
EP0058805A1 EP0058805A1 (fr) 1982-09-01
EP0058805B1 true EP0058805B1 (fr) 1984-08-01

Family

ID=9248440

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810401810 Expired EP0058805B1 (fr) 1980-11-28 1981-11-18 Procédé et dispositif permettant de remplir des emballages souples tels que des sacs

Country Status (4)

Country Link
EP (1) EP0058805B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3165275D1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2495102A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SU (1) SU1042608A3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH667246A5 (de) * 1985-02-18 1988-09-30 Ilapak Res & Dev Sa Vertikale schlauchbeutelmaschine.
GB9002836D0 (en) * 1990-02-08 1990-04-04 Stott L E Ltd Powder dispensing apparatus
US5316056A (en) * 1991-03-14 1994-05-31 L. E. Stott Limited Powder dispensing apparatus
GB9301635D0 (en) * 1993-01-27 1993-03-17 Norsk Hydro As Method and apparatus
CH690573A5 (de) * 1996-04-16 2000-10-31 Lorenz Bohler Verfahren und Vorrichtung zur Vermeidung von Produktestaub- oder Produktegasaustritt bei Abfüllung mit Feststoff- oder Flüssigkeitsdosiersystemen.
RU2103204C1 (ru) * 1996-04-24 1998-01-27 Юрий Всеволодович Копылов Способ упаковки сыпучих материалов в мягкие контейнеры
CN107572015B (zh) * 2017-10-30 2023-11-24 郑州市同鼎机械设备有限公司 一种阀口袋装料机的三口吸尘装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2078313A (en) * 1934-12-17 1937-04-27 Bagpak Inc Bag filling machine
US2694515A (en) * 1952-03-26 1954-11-16 United States Steel Corp Funnel device for filling containers
US3040490A (en) * 1960-05-31 1962-06-26 Triangle Package Machinery Co Apparatus and method for making, filling, and sealing containers
DE7229123U (de) * 1972-08-05 1972-11-02 F Hesser Maschinenfab Ag Vorrichtung zum verpacken von zum stauben neigenden gutern innerhalb einer schutzgasatmosphare

Also Published As

Publication number Publication date
DE3165275D1 (en) 1984-09-06
EP0058805A1 (fr) 1982-09-01
FR2495102A1 (fr) 1982-06-04
FR2495102B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1984-09-07
SU1042608A3 (ru) 1983-09-15

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