EP0700839A1 - Vorrichtung zur Entlüftung eines Verpackungsbeutels - Google Patents

Vorrichtung zur Entlüftung eines Verpackungsbeutels Download PDF

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Publication number
EP0700839A1
EP0700839A1 EP95460032A EP95460032A EP0700839A1 EP 0700839 A1 EP0700839 A1 EP 0700839A1 EP 95460032 A EP95460032 A EP 95460032A EP 95460032 A EP95460032 A EP 95460032A EP 0700839 A1 EP0700839 A1 EP 0700839A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
air
bag
heat
valve
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Withdrawn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
EP95460032A
Other languages
English (en)
French (fr)
Inventor
Pierre-Henri Cospain
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.)
CIF (S.A.)
Original Assignee
Cif (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 Cif (sa) filed Critical Cif (sa)
Publication of EP0700839A1 publication Critical patent/EP0700839A1/de
Withdrawn legal-status Critical Current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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • B65D81/2007—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
    • B65D81/2038—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum with means for establishing or improving vacuum
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/22—Details
    • B65D77/225—Pressure relief-valves incorporated in a container wall, e.g. valves comprising at least one elastic element
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • B65D81/2007—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
    • B65D81/2023—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum in a flexible container

Definitions

  • the present invention relates to the field of packaging and conditioning of various materials. It particularly finds its application in the field of packaging and conditioning of pulverulent materials of various natures, in particular food or chemical.
  • the packaging and packaging of these materials is carried out using heat-sealable bags which make it possible to ensure a good seal of their contents and to prevent their leakage.
  • These bags can in particular be made of plastic material or else of paper provided, at least at the closure, with an internal coating of plastic material capable of allowing heat sealing.
  • Such packages are hermetically sealed after filling.
  • it is necessary to avoid the introduction of air into the bags at the time of packaging.
  • the presence of air in the packaging bags has many disadvantages.
  • the air obviously increases the volume of the bags, which in particular in the industrial packaging of large quantities of material, requires larger storage volumes.
  • the presence of air is inconvenient for the conservation of certain types of materials. This is the case for materials sensitive to oxidation or sensitive to the humidity that air can contain.
  • the presence of air also increases the fragility of the bags and the risk of perforation of the latter during handling is thereby increased.
  • valve allowing the evacuation of air must be inserted on the wall of the bag. This operation can only take place during the manufacture of the bags which makes it more difficult to implement and therefore more expensive.
  • the valve will already be present on the bag during filling, which will also make this operation more difficult.
  • the filling operations are carried out by automatic machines: the bags are sorted, moved on rolling belts and the valve which is in fact in the form of a protuberance makes these operations more complicated.
  • Another drawback is related to the storage and handling of the bags. Indeed the protruding valves can cause by friction on other bags of the perforations. Optimal stacking of bags is also more difficult.
  • the object of the present invention is to propose a device making it possible to evacuate at least partially the air contained in a packaging bag which does not have such drawbacks.
  • Another object of the invention is to provide such a device which can easily be implemented outside the process of manufacturing said bag.
  • Yet another objective of the invention is to describe such a device making it possible to quickly and naturally evacuate the air from the packaging bags while eliminating any protuberance on the surface of these bags.
  • Another objective of the invention is to allow easier automatic filling of the bags and to prevent the perforation of the bags during their packaging.
  • a device for evacuating at least part of the air trapped in a heat-sealable packaging bag in particular for pulverulent material, characterized in that it consists of a sleeve open to only one of its ends, said sleeve being formed at least at said end by an inner non-heat-sealable material and by an outer heat-sealable material, said sleeve being intended to be placed in the mouth of said bag when the latter is closed so as to allow the passage of the air contained in said bag to the outside.
  • the device according to the invention can be put in place after the manufacture of the bags and after filling, which offers the main advantage of easier handling.
  • the sleeve which offers a large opening thus allows a rapid and natural evacuation of the air, that is to say without pumping operations.
  • the evacuation of the air from the interior of the bags provided with such a device may be caused by the simple stacking of these on top of each other.
  • the device, object of the invention has no annoying protuberance during subsequent handling of the filled bags.
  • the risks of perforation linked to the presence of a valve fixed on the wall of the bag are therefore zero and storage is easier.
  • said sleeve is made of a material allowing air to pass, bordered at its upper end by an outer heat-sealable material.
  • said material allowing air to pass is a filtering material such as for example non-woven fibers.
  • said sleeve consists of an air-impermeable material provided with at least one valve secured to said material.
  • the device comprises a tongue made of non-heat-sealable material inserted inside the sleeve and intended to prevent the closing of said sleeve during the closing of said bag by heat-sealing. Such a tab can be removed after closing the bag.
  • said sleeve made of impermeable material consists of an outer envelope made of a heat-sealable material and an inner envelope made of a non-heat-sealable material.
  • valve used is a unidirectional valve allowing the passage of air only from the inside of the bag to the outside. The air can thus easily exit the bag without being able to re-enter it.
  • the closed end of said sleeve forms a bottom, said valve being preferably fixed on said bottom.
  • Such an arrangement prevents the valve from coming stick against the wall of the bag, which, under certain conditions, could hinder its operation.
  • valve fixed to said bottom is covered with a material allowing air to pass through, such as filter paper.
  • the air exhaust device shown is constituted by a sleeve 2 open at only one of its ends 3, the other end being sealed.
  • This sleeve was produced by assembling two sheets of filter material allowing the air to pass, provided on their outer periphery with a strip of heat-sealable plastic material 4.
  • the sleeve thus has an opening 3a allowing communication from the inside of the sleeve with the outside.
  • the device also includes a tongue 11 made of a non-heat-sealable material placed inside the sleeve.
  • the sleeve shown is intended to be placed in the mouth of a heat-sealable packaging bag when the latter is closed so as to allow the passage of the air contained in said bag towards the outside, through the filtering material. nonwoven.
  • the tongue 11 ensures that, when the bag is closed by heat sealing, the opening of the sleeve 2 is not closed at the same time. This tab can then be removed. Once the bag has been degassed, a second weld can even be envisaged to close the sleeve.
  • the second embodiment of the invention shown consists of a sleeve made of an air-impermeable material and is provided with a valve 5.
  • the air-impermeable material consists of an outer envelope 6 made of a heat-sealable plastic material and an inner envelope 7 made of a non-heat sealable material.
  • the valve 5 used is a unidirectional valve allowing the passage of air only in one direction, that is to say from the outside of the sleeve towards the inside thereof, towards the opening 3a.
  • the third embodiment of the invention shown includes a sleeve 2 open at its end 3 made of a material similar to that of the embodiment shown in Figure 2.
  • This sleeve also has one end 8 forming a bottom 9 on which is fixed a one-way valve 5.
  • the bottom 9 is moreover covered with a filtering material 10 allowing the air to pass and making it possible to ensure correct operation of the valve.
  • a packaging bag 1 with plastic bellows is equipped with a device conforming to FIG. 3 incorporating a valve 5.
  • This device is inserted into the mouth of the bag when the latter is closed by heat-sealing it. this, inside of it.
  • the closure line 11 cooperates with the sleeve 2 in the upper part thereof.
  • the inner material of said sleeve 2 being made of a non-heat-sealable material, the opening 3a of the sleeve on the outside is ensured.
  • the air contained in this bag can be removed by simple pressure (possibly during storage) thereof.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
EP95460032A 1994-09-07 1995-09-06 Vorrichtung zur Entlüftung eines Verpackungsbeutels Withdrawn EP0700839A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9410876A FR2724152B1 (fr) 1994-09-07 1994-09-07 Dispositif pour evacuer l'air contenu dans un sac de conditionnement
FR9410876 1994-09-07

Publications (1)

Publication Number Publication Date
EP0700839A1 true EP0700839A1 (de) 1996-03-13

Family

ID=9466870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95460032A Withdrawn EP0700839A1 (de) 1994-09-07 1995-09-06 Vorrichtung zur Entlüftung eines Verpackungsbeutels

Country Status (2)

Country Link
EP (1) EP0700839A1 (de)
FR (1) FR2724152B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1265787A1 (de) * 2000-03-02 2002-12-18 Tempra Technology, Inc. Hilfe beim vakuumverpacken
EP1893490A1 (de) * 2005-06-24 2008-03-05 The Glad Products Company Tragetasche mit entleerungsvorrichtung
WO2013057725A2 (es) 2011-10-19 2013-04-25 Instituto De Capacitacion E Investigacion Del Plastico Y Del Caucho Icipc Empaque con válvula respirable para productos perecederos
US10167116B1 (en) 2017-08-31 2019-01-01 Dow Global Technologies Llc Flexible bag with microcapillary strip

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3052633B1 (fr) * 2016-06-17 2019-01-25 Frederic Poujaud Dispositif de stockage sous vide et de transport de grain

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH301664A (fr) * 1952-08-14 1954-09-15 Dreyer Andre Récipient étanche pour liquides.
DE2747071A1 (de) * 1977-10-20 1979-04-26 Sengewald Karl H Beutel aus gasdichter folie
US4310118A (en) * 1979-08-10 1982-01-12 C. I. Kasei Co. Ltd. Packaging bags for powdery materials

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH301664A (fr) * 1952-08-14 1954-09-15 Dreyer Andre Récipient étanche pour liquides.
DE2747071A1 (de) * 1977-10-20 1979-04-26 Sengewald Karl H Beutel aus gasdichter folie
US4310118A (en) * 1979-08-10 1982-01-12 C. I. Kasei Co. Ltd. Packaging bags for powdery materials

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1265787A1 (de) * 2000-03-02 2002-12-18 Tempra Technology, Inc. Hilfe beim vakuumverpacken
JP2003525181A (ja) * 2000-03-02 2003-08-26 テンプラ テクノロジー，インコーポレーテッド 真空パッケージング補助材
EP1265787A4 (de) * 2000-03-02 2004-03-03 Tempra Tech Inc Hilfe beim vakuumverpacken
EP1893490A1 (de) * 2005-06-24 2008-03-05 The Glad Products Company Tragetasche mit entleerungsvorrichtung
EP1893490A4 (de) * 2005-06-24 2009-08-12 Glad Products Co Tragetasche mit entleerungsvorrichtung
WO2013057725A2 (es) 2011-10-19 2013-04-25 Instituto De Capacitacion E Investigacion Del Plastico Y Del Caucho Icipc Empaque con válvula respirable para productos perecederos
US10167116B1 (en) 2017-08-31 2019-01-01 Dow Global Technologies Llc Flexible bag with microcapillary strip
WO2019046395A1 (en) * 2017-08-31 2019-03-07 Dow Global Technologies Llc MICROCAPILLARY BAND FLEXIBLE BAG

Also Published As

Publication number Publication date
FR2724152A1 (fr) 1996-03-08
FR2724152B1 (fr) 1996-12-06

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