EP0269484A1 - Verfahren und Vorrichtung zum luftdichten Verschliessen von Behältern - Google Patents

Verfahren und Vorrichtung zum luftdichten Verschliessen von Behältern Download PDF

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Publication number
EP0269484A1
EP0269484A1 EP87402384A EP87402384A EP0269484A1 EP 0269484 A1 EP0269484 A1 EP 0269484A1 EP 87402384 A EP87402384 A EP 87402384A EP 87402384 A EP87402384 A EP 87402384A EP 0269484 A1 EP0269484 A1 EP 0269484A1
Authority
EP
European Patent Office
Prior art keywords
container
enclosure
blank
opening
sealing
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.)
Withdrawn
Application number
EP87402384A
Other languages
English (en)
French (fr)
Inventor
André Douard
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.)
JOKEY-FRANCE
Original Assignee
JOKEY-FRANCE
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 JOKEY-FRANCE filed Critical JOKEY-FRANCE
Publication of EP0269484A1 publication Critical patent/EP0269484A1/de
Withdrawn legal-status Critical Current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
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/162—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by feeding web material to securing means
    • B65B7/164—Securing by heat-sealing

Definitions

  • the present invention relates to a method and a device for leaktight closure of containers comprising an opening using a cover by the so-called cover technique.
  • the sealing methods of such packages require the evacuation of the air contained in the container and possibly its replacement by an appropriate gas, before the operation of sealing a seal and cutting of this seal according to the contours of the container. .
  • the patent FR 1 351 301 describes a method for closing containers according to which the container is placed in a box higher than the container by holding above the box a sheet of plastic material which can be welded with the edge of the container, we approach the box of the sheet held above it until the edge of the box forms with the sheet an airtight seal, we expel the air from the box and then we press the one against the other the edge of the container and the sheet and soda them together.
  • US 2 120 272 (WILLIAMS) describes an apparatus for evacuating and closing containers comprising a vacuum enclosure in which the upper part of the container. This device further comprises elements ensuring the sealing of the enclosure at the edges of the container. However, this device does not apply a cover but only a cover.
  • the method of the present invention virtually eliminates the need for a sealed enclosure enclosing the container and minimizes the volume of air that must be exhausted to evacuate the container.
  • a first object of the invention is to propose a method of sealing tightly containers having an opening using a cover by the so-called sealing technique comprising: - bringing said container into a sealing enclosure capable of being sealed from the outside after introduction of the container, - the supply of a blank cover above the opening of the container, the at least partial evacuation of the air contained in said enclosure, in order to evacuate the air contained in the container, and its possible replacement with an appropriate gas, and the sealing of said container by application of said blank against the opening and its sealing on the container with possible cutting of the cover, characterized in that said container is brought so that it constitutes part of said enclosure, thereby limiting the volume of said enclosure to a minimum.
  • a second object of the invention is to provide a sealed container closure device comprising an opening to using a seal by the so-called seal technique, comprising: means for bringing said container into a sealing enclosure capable of being isolated, means for supplying a blank cover, means for at least partial evacuation of the air contained in the enclosure for evacuating the air contained in the container, and possibly means for introducing an appropriate replacement gas, means for applying the blank against the opening of the container, means for sealing the blank on the container, and - possible means of cutting the sealed cover, characterized in that it comprises: - An element provided with an orifice of dimension at least equal to that of the opening of the container, the lateral internal wall of said orifice forming part of the enclosure, said element comprising a bearing surface of said blank and a surface d support of said container, so as to define the aforementioned enclosure between said blank, said lateral internal wall of the element and said container and - A seal between said element and said container, mounted on said element projecting inwardly so that the container comes to bear against the seal in
  • the air evacuation means comprise at least one suction duct produced in the mass of the aforementioned element and opening out on its side wall facing immediately from the projecting inner edge of said seal while leaving a free space for the passage of air.
  • Figure 1 is a perspective view of the apparatus for sealing the buckets according to the closing method of the invention.
  • the bucket 1 is brought by the conveyor belt 20 to the support plate 21 movable vertically.
  • the support plate 21 then lifts the bucket 1 to the sealing enclosure 2, so that the upper rim of the bucket comes to engage in a sealed manner in the receiving orifice 6, thereby limiting the volume of the enclosure.
  • the means for supplying a blank cover consist of a feed roller 22 delivering a thermoplastic film 9 intended to serve both as an upper wall to the sealing enclosure 2 for the evacuation of the air from said enclosure and seal for the final operation of closing the bucket.
  • This film has a width greater than the diameter of the bucket 1 to be sealed and is placed under tension above the opening of the bucket. Furthermore, it is necessary that this film has sufficient strength to withstand the mechanical stresses imposed by the suction in the enclosure 2.
  • the at least partial evacuation of the air contained in said enclosure 2 is implemented to evacuate the air contained in the container and its replacement is carried out, if necessary, by an appropriate gas.
  • the sealing of the bucket 1 is carried out by application of said blank against the opening and its sealing on the container with possible cutting of the cover.
  • the plate 21 descends it on the conveyor belt which will convey it to the exit of the machine.
  • the operation of the device of the invention is fully automatic and the sealing operation is very fast.
  • Figure 2 is a partial section of the closure device according to the invention used for sealing plastic buckets.
  • the enclosure 2 in which the vacuum is created is isolated from the outside and has a very small volume corresponding substantially to the free interior volume of the bucket completed by the free space situated under the blank of cover 3 between the internal lateral walls 5 of element 4.
  • the envelope of the bucket 1 therefore constitutes a part of the enclosure 2.
  • the air evacuation means consist of at least one suction duct 13 made in the mass of the element 4, connected to a valve (not shown) and opening into the enclosure 2 on the internal wall lateral 5 of said element.
  • the lateral internal wall 5 defining the receiving orifice 6 of the bucket 1 in the element 4 is part of the enclosure 2.
  • the receiving orifice 6 has a diameter at least equal to the diameter of the opening of the bucket 1, which allows great flexibility of use.
  • the element 4 has a bearing surface consisting of a flexible annular sealing gasket 7 mounted on the lower periphery of the lateral internal wall 5 so that the upper edge of the bucket 1 comes to bear towards the high against seal 7 in receiving hole 6.
  • the seal 7 projects towards the inside of the enclosure 2 relative to the profile of the lateral internal wall 5 of the element 4.
  • This assembly guarantees the tightness of the enclosure 2 and makes it possible to receive in the orifice 6 buckets of slightly different models and diameters.
  • the element 4 has a bearing surface 8 for receiving and stretching the blank of cover 3 from a continuous thermoplastic film 9 delivered by a feed roller.
  • the blank 3 is pressed against the bearing surface 8 by a holding member 10 which blocks the film during the sealing operation and which then releases it to advance it and put in place a new blank 3.
  • the enclosure After evacuation of the air contained in the enclosure 2 and therefore in the bucket 1, the enclosure can be pressurized with inert gas or any other gas by means of gas introduction means constituted either of the conduit 13 and of a valve (located upstream and not shown), or of another conduit made in the same way as the conduit 13 in the mass of the element 4.
  • the cover 3 is heat sealed on the collar of the bucket 1 by means of the press 11, then is cut by means of the movable blade 12 following the bucket outline 1.
  • the bucket 2 is then released from the orifice 6 and lowered by the plate onto the conveyor belt for the unloading operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vacuum Packaging (AREA)
  • Closing Of Containers (AREA)
EP87402384A 1986-11-14 1987-10-23 Verfahren und Vorrichtung zum luftdichten Verschliessen von Behältern Withdrawn EP0269484A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8615914A FR2606738B1 (fr) 1986-11-14 1986-11-14 Procede et dispositif de fermeture etanche de recipients
FR8615914 1986-11-14

Publications (1)

Publication Number Publication Date
EP0269484A1 true EP0269484A1 (de) 1988-06-01

Family

ID=9340853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87402384A Withdrawn EP0269484A1 (de) 1986-11-14 1987-10-23 Verfahren und Vorrichtung zum luftdichten Verschliessen von Behältern

Country Status (2)

Country Link
EP (1) EP0269484A1 (de)
FR (1) FR2606738B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105059592A (zh) * 2015-08-04 2015-11-18 成都市罗迪波尔机械设备有限公司 一种保鲜气体置换装置及方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2120272A (en) * 1935-07-11 1938-06-14 Hazel Atlas Glass Co Vacuumizer
US2519353A (en) * 1946-10-15 1950-08-22 American Can Co Can closing machine
FR1146545A (fr) * 1955-06-20 1957-11-13 Dispositif pour fermer par le vide des bouteilles avec des capsules du type couronne, et machine comprenant ce dispositif
FR1457943A (fr) * 1965-12-10 1966-11-04 Indive Gmbh Dispositif de fermeture automatique d'un récipient en matière plastique et machine équipée d'un tel dispositif ou dispositif similaire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2120272A (en) * 1935-07-11 1938-06-14 Hazel Atlas Glass Co Vacuumizer
US2519353A (en) * 1946-10-15 1950-08-22 American Can Co Can closing machine
FR1146545A (fr) * 1955-06-20 1957-11-13 Dispositif pour fermer par le vide des bouteilles avec des capsules du type couronne, et machine comprenant ce dispositif
FR1457943A (fr) * 1965-12-10 1966-11-04 Indive Gmbh Dispositif de fermeture automatique d'un récipient en matière plastique et machine équipée d'un tel dispositif ou dispositif similaire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105059592A (zh) * 2015-08-04 2015-11-18 成都市罗迪波尔机械设备有限公司 一种保鲜气体置换装置及方法

Also Published As

Publication number Publication date
FR2606738A1 (fr) 1988-05-20
FR2606738B1 (fr) 1989-07-28

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Inventor name: DOUARD, ANDRE