EP0451069A1 - Aus heisssiegelbarem Material hergestellte Tüte und Vorrichtung zum wiederholbaren Verschliessen der Tüte - Google Patents

Aus heisssiegelbarem Material hergestellte Tüte und Vorrichtung zum wiederholbaren Verschliessen der Tüte Download PDF

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Publication number
EP0451069A1
EP0451069A1 EP91420115A EP91420115A EP0451069A1 EP 0451069 A1 EP0451069 A1 EP 0451069A1 EP 91420115 A EP91420115 A EP 91420115A EP 91420115 A EP91420115 A EP 91420115A EP 0451069 A1 EP0451069 A1 EP 0451069A1
Authority
EP
European Patent Office
Prior art keywords
bag
welded
length
bag according
strip
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
EP91420115A
Other languages
English (en)
French (fr)
Other versions
EP0451069B1 (de
Inventor
Claude Richard
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.)
Ets C Richard - Pates Alpina SA
Original Assignee
Ets C Richard - Pates Alpina SA
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 Ets C Richard - Pates Alpina SA filed Critical Ets C Richard - Pates Alpina SA
Priority to AT91420115T priority Critical patent/ATE91992T1/de
Publication of EP0451069A1 publication Critical patent/EP0451069A1/de
Application granted granted Critical
Publication of EP0451069B1 publication Critical patent/EP0451069B1/de
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
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/1691—End- or aperture-closing arrangements or devices using adhesive applied to attached closure elements
    • 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
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/02—Closing containers or receptacles deformed by, or taking-up shape, of, contents, e.g. bags, sacks

Definitions

  • the invention relates to a bag of heat-sealable material for dry bulk products. It also relates to a device capable of ensuring the repeated closing of such sachets.
  • the invention aims to overcome these various drawbacks. It is aimed at a bag for dry bulk products which is simple and easy to open, without causing damage to the bag itself, and the contents of which are also poured in a simple and directed manner.
  • the invention consists in no longer traditionally welding the entire length of the upper end, but only weld the latter in part only, in order to define at the level of the non-welded part a zone which can be folded towards the inside of the bag and defining the pouring spout, making it possible to pour the contents of the bag in a directed and not anarchic manner this has so far been the case.
  • the invention also relates to a device able to allow the closure of the upper end of such a bag.
  • This device basically comprises a pair of heating jaws, having an active toothed part, the length of which corresponds to the length of the upper end to be welded, associated with an inactive part devoid of any toothed element, corresponding at least to the length of the 'upper end not welded.
  • the inactive part receives a polytetrafluoroethylene (PTFE) insert, the thickness of which corresponds to that of the active part, and this for the purpose of pinching and gripping the upper end of the bag during the step of welding.
  • PTFE polytetrafluoroethylene
  • Figure 1 is a schematic perspective view of a closed bag according to the invention.
  • Figure 2 is a schematic perspective view of the same bag in which the upper end is partially open.
  • Figure 3 is a schematic perspective view of the bag according to the invention in which the folds corresponding to the area of the upper end not welded are deployed outward to form the spout.
  • Figure 4 is a schematic perspective view of the closed bag according to the invention according to an improved embodiment.
  • Figure 5 is a plan view of a set of heated jaws of the device according to the invention in the operational position.
  • FIG. 6 is a view similar to that of FIG. 5, in which the inactive part of the jaws receives an insert made of PTFE.
  • the bags of heat-sealable material for dry and bulk products are produced from a film of heat-sealable material which is positioned on a shaping device of appropriate shape, suitable for giving it the definitive parallelepiped shape of the bag.
  • a longitudinal edge-to-edge weld 4 is made of the two ends of the film.
  • the bottom of the bag is produced by closing the lower end 3 of said parallelepiped, and this, in a known manner by pinching between two heating jaws, at a temperature at least equal to the melting point of the plastic material. , simultaneously with the production of diametrically opposite folds, directed towards the inside of the bag, in order to obtain a relatively flat bottom.
  • the next step concerns the filling of the sachet, for example by means of metering devices which, in known manner, pour into the sachet a predetermined and calibrated quantity of bulk products.
  • the next phase concerns the closure of the upper end 2 of the bag, once it has been filled, carried out in a similar manner to the production of the bottom 3.
  • the station for carrying out this operation is in fact a double station, on which the upper bag is closed at its lower end 3 and receives the dry and bulk product from a metering device, and the full lower bag is closed at its upper end 2, the additional operation of separating the two sachets made from the same film of heat-sealable material being carried out between the two sets of two welding jaws by means of a knife, guillotine type.
  • the lower sachet is therefore filled when it is closed and then passes to the next so-called "tamping" step, which consists in vibrating said sachet in order to slightly compact the bulk product in the package. In this way, given these vibrations, an empty space is generated at the upper part of the bag, capable of allowing a less loose closure of the bag.
  • a pair of cold jaws intended to produce the folds 7 at the level of the upper end of the bag 1 at this empty space, come to grip the bag at the level of it, and simultaneously, a knife performs a vertical incision to allow the air in this space to be released.
  • the following phase corresponds to the completion of the final weld of the upper end 2 by means of hot jaws, the weld being effected over at least half of the length 5 of the said upper end, but nevertheless less than the withdrawal zone. of the folded part 7 situated on the side of the non-welded part, in order to overcome any risk of welding of this said folded part 7. In fact, this folded part 7 subsequently plays the role of pouring spout by deploying it- this outward.
  • the next step then relates to the closing of the non-welded part 6 of the upper end 2 by means of an adhesive strip 8, glued for example by means of feelers on said part 6 to the upper part of the bag 1.
  • this adhesive strip is provided on its sticky part with transfer glue capable of allowing the bag to be closed after each use.
  • transfer glue capable of allowing the bag to be closed after each use.
  • an area devoid of glue is provided at one of its ends, over a few millimeters.
  • the adhesive strip 8 is permanently glued, the opening of the bag being effected by rupture of this strip. Once the strip removed, or torn, we take out the part folded 7 outwards, so as to form a spout as can be seen in FIG. 3. In this way, the pouring of the contents of the sachet 1 is carried out in a simple and easy manner in the desired direction and in quantity wanted. There is no longer any risk of damage or uncontrolled rupture of the sachet.
  • FIG. 4 represents an improved embodiment of the invention, in which the adhesive strip consists of a label 80 which covers most of the top of the bag 1 and which comprises a precut longitudinal strip 81 arranged astride the end upper 2 of bag 1.
  • the label 80 improves the finished appearance of the sachet, can carry various information relating to the product (and in particular a bar code) and prevents any risk of untimely tearing of the sachet at the level of the end 2.
  • the strip 81 facilitates the opening of the bag 1. It advantageously comprises a means making it possible to facilitate its lifting and tearing, such as a tab 81a projecting from one of the edges of the label 80.
  • Each of these two jaws is provided with a first zone 12 known as toothed active zone capable of allowing the partial welding of the upper end 5 of the bag 1, and a second zone 13 known as inactive, devoid of any active zone so not to weld the corresponding part 6 of the upper end 2 of the bag.
  • this area 13 is filled with two pieces 14, attached by any appropriate means to the two jaws 10 and 11, and made of polytetrafluoroethylene, better known under the registered trademark "TEFLON", and the total thickness of these two parts corresponds to the thickness of the active part 12 of the jaws 10 and 11.
  • TEFLON polytetrafluoroethylene
  • the choice of material used for this part is also dictated by the temperature conditions applied to said jaws 10, 11.
  • the sachets according to the invention prove to be quite easy to use and also simple to open, allowing a rational payment of the contents. It is therefore entirely suitable for all bulk products, such as in particular food products, provided that a food-grade plastic material is used, such as for example polypropylene or polyethylene. This type of bag is therefore suitable for bulk products, for which vacuum storage is not necessary. These products can be in pulverulent form such as in particular flour, or even granular or others, for example pasta, rice, etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
  • Laminated Bodies (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
EP91420115A 1990-04-05 1991-04-04 Aus heisssiegelbarem Material hergestellte Tüte und Vorrichtung zum wiederholbaren Verschliessen der Tüte Expired - Lifetime EP0451069B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91420115T ATE91992T1 (de) 1990-04-05 1991-04-04 Aus heisssiegelbarem material hergestellte tuete und vorrichtung zum wiederholbaren verschliessen der tuete.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9004628 1990-04-05
FR9004628A FR2660629B1 (fr) 1990-04-05 1990-04-05 Sachet en matiere thermoscellable pour produits en vrac et dispositif pour assurer sa fermeture repetee.

Publications (2)

Publication Number Publication Date
EP0451069A1 true EP0451069A1 (de) 1991-10-09
EP0451069B1 EP0451069B1 (de) 1993-07-28

Family

ID=9395648

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91420115A Expired - Lifetime EP0451069B1 (de) 1990-04-05 1991-04-04 Aus heisssiegelbarem Material hergestellte Tüte und Vorrichtung zum wiederholbaren Verschliessen der Tüte

Country Status (6)

Country Link
EP (1) EP0451069B1 (de)
AT (1) ATE91992T1 (de)
CA (1) CA2039286A1 (de)
DE (1) DE69100194T2 (de)
ES (1) ES2043455T3 (de)
FR (1) FR2660629B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517566A1 (de) * 1991-06-03 1992-12-09 Compagnie Gervais-Danone Vorrichtung zum Verschliessen und Öffnen eines Beutels aus Kunststoffolie
FR2692393A1 (fr) * 1992-06-12 1993-12-17 Omapi Etiquette adhésive et procédé de fabrication de telles étiquettes.
EP0608451A1 (de) * 1993-01-27 1994-08-03 Rovema Verpackungsmaschinen Gmbh Faltbeutel
EP0629990A1 (de) * 1993-06-17 1994-12-21 Société Anonyme: OMAPI Selbstklebende Etiketten und Verfahren zur Herstellung derselben
FR2847234A1 (fr) * 2002-11-18 2004-05-21 Cetec Ind Conditionnement Sac a ouverture rapide et fermeture repositionnable

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212698A (en) * 1964-05-08 1965-10-19 Cello Foil Products Inc Easy opening resealable bag
US4066167A (en) * 1976-07-08 1978-01-03 Keebler Company Recloseable package
US4332344A (en) * 1980-02-08 1982-06-01 Strodthoff Glenn G Resealable package

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867226A (en) * 1971-11-24 1975-02-18 Joseph J Guido Method for sealing plastic bags

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212698A (en) * 1964-05-08 1965-10-19 Cello Foil Products Inc Easy opening resealable bag
US4066167A (en) * 1976-07-08 1978-01-03 Keebler Company Recloseable package
US4332344A (en) * 1980-02-08 1982-06-01 Strodthoff Glenn G Resealable package

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517566A1 (de) * 1991-06-03 1992-12-09 Compagnie Gervais-Danone Vorrichtung zum Verschliessen und Öffnen eines Beutels aus Kunststoffolie
FR2692393A1 (fr) * 1992-06-12 1993-12-17 Omapi Etiquette adhésive et procédé de fabrication de telles étiquettes.
EP0608451A1 (de) * 1993-01-27 1994-08-03 Rovema Verpackungsmaschinen Gmbh Faltbeutel
EP0629990A1 (de) * 1993-06-17 1994-12-21 Société Anonyme: OMAPI Selbstklebende Etiketten und Verfahren zur Herstellung derselben
FR2847234A1 (fr) * 2002-11-18 2004-05-21 Cetec Ind Conditionnement Sac a ouverture rapide et fermeture repositionnable

Also Published As

Publication number Publication date
ES2043455T3 (es) 1993-12-16
DE69100194T2 (de) 1994-01-27
ATE91992T1 (de) 1993-08-15
DE69100194D1 (de) 1993-09-02
FR2660629B1 (fr) 1992-08-14
CA2039286A1 (fr) 1991-10-06
FR2660629A1 (fr) 1991-10-11
EP0451069B1 (de) 1993-07-28

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