EP3535189A1 - Procede et dispositif de conditionnement en pression d'un contenant a traiter et machine de conditionnement en pression associee - Google Patents
Procede et dispositif de conditionnement en pression d'un contenant a traiter et machine de conditionnement en pression associeeInfo
- Publication number
- EP3535189A1 EP3535189A1 EP17811983.0A EP17811983A EP3535189A1 EP 3535189 A1 EP3535189 A1 EP 3535189A1 EP 17811983 A EP17811983 A EP 17811983A EP 3535189 A1 EP3535189 A1 EP 3535189A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- container
- plug
- fluid
- cover
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 67
- 239000000463 material Substances 0.000 claims abstract description 43
- 238000002844 melting Methods 0.000 claims abstract description 13
- 230000008018 melting Effects 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims description 34
- 238000007789 sealing Methods 0.000 claims description 27
- 230000003750 conditioning effect Effects 0.000 claims description 26
- 230000001954 sterilising effect Effects 0.000 claims description 23
- 238000005553 drilling Methods 0.000 claims description 21
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 238000003032 molecular docking Methods 0.000 claims description 17
- 230000003287 optical effect Effects 0.000 claims description 15
- 238000004659 sterilization and disinfection Methods 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 10
- 239000000155 melt Substances 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 230000004927 fusion Effects 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 238000012795 verification Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 230000001939 inductive effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 19
- 239000004033 plastic Substances 0.000 description 14
- 229920003023 plastic Polymers 0.000 description 14
- 239000012528 membrane Substances 0.000 description 10
- 235000021056 liquid food Nutrition 0.000 description 5
- 244000052769 pathogen Species 0.000 description 5
- 235000021057 semi-liquid food Nutrition 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000036512 infertility Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000036284 oxygen consumption Effects 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 235000015203 fruit juice Nutrition 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000013502 plastic waste Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000012611 container material Substances 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000009928 pasteurization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
- B65B31/006—Adding fluids for preventing deformation of filled and closed containers or wrappers
-
- 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
- B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
- B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
- B65B31/046—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles co-operating, or being combined, with a device for opening or closing the container or wrapper
-
- 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
- B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
- B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
- B65B31/08—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzle being adapted to pierce the container or wrapper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
- B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
- B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
- B67C3/22—Details
- B67C3/26—Filling-heads; Means for engaging filling-heads with bottle necks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
- B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
- B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
- B67C3/22—Details
- B67C2003/226—Additional process steps or apparatuses related to filling with hot liquids, e.g. after-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
- B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
- B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
- B67C3/22—Details
- B67C2003/228—Aseptic features
Definitions
- the present invention relates to the field of bottling, and relates in particular to a method and a device for pressure-conditioning a container to be treated. at least partially filled with a content and sealingly sealed by a plug disposed above a headspace of the container, and on an associated pressure conditioning machine.
- content is understood to mean a liquid or semi-liquid food product intended to be marketed outside the cold chain such as an acidic fruit juice, in a container, a container within the meaning of the present invention being an envelope polymeric material such as a bottle, provided with a plug of known type, for hermetically closing the bottle after filling, usually screw.
- liquid or semi-liquid food contents are sensitive to microbial growth and the organoleptic qualities are very rapidly modified in the absence of sterilization treatment of the pathogenic organisms and / or the presence of oxygen.
- the high temperature heat treatment of the order of 90 ° C for a few seconds is also applied to liquids or semi-liquid foods with a pH below 4.7, such as juices. example.
- the liquid is treated in a specific unit, prior to the filling which must be performed in a sterile manner. It must therefore be ensured that the chain remains sterile.
- This known filling method consists in cold filling in a sterile environment, the container and its cap being cold sterilized by means of a sterilizing liquid and then rinsing and the contents then being introduced into this container in an aseptic atmosphere.
- the advantage is to use packaging that requires little material because the necessary mechanical properties are limited. The process does not cause volume variations due to temperature variations.
- a last solution among the main solutions known from the prior art is to heat-fill a package, that is to say to introduce the contents brought to a high temperature directly into the container without it having undergone a sterilization treatment.
- it is the content itself that ensures the sterilization of the container because it is introduced at a temperature allowing the destruction of pathogenic organisms therefore greater than 73 ° C, generally 85 ° C.
- the package is closed and immediately agitated, generally by turning, to heat treat all internal surfaces of the container, including the inner face of the cap.
- the plug in the case of hot plugging is a known type of plug, monomatiere, obtained by molding, controlled before installation to avoid any installation of a faulty plug.
- Such caps are extremely inexpensive.
- the disadvantage of hot filling is to require a package that withstands both the temperature and secondly the collapse phenomenon related to the retraction of the volume of the liquid during cooling, this which depresses the interior of said container.
- the oxygen of the air trapped during filling is also "consumed" after cooling by the liquid or semi-liquid food composition, which causes a delayed depression which may also cause additional deformation of the container.
- the packaging which must therefore be mechanically resistant and / or deformable, requires a large amount of material and often a specific architecture with panels to resist the deformations of this package and / or to compensate for the depression by appropriate deformations.
- funds can take two positions, one deformation inwardly under the effect of the depression so as to compensate said depression.
- the deformation of the bottom being under the bottle, this does not cause stability problem of the bottle when it is placed on said bottom, only the digging of the bottom is more pronounced, which is invisible, except to look from below. It is understood that such a background must be sophisticated, is complex to achieve and induces a clear overhead.
- the purpose which is also that of the present invention, is to be able to proceed in particular hot filling using bottles having an overweight of material as low as possible compared to the containers used for filling in sterile environment, cold .
- Patents which have proposed a method of compensation, such as patent applications FR 2322062 A1 and US 2015/0121807 A1 which propose injecting a gaseous fluid into the headspace through a specific closure member.
- a device consists in introducing a needle through the closure member, injecting a gas through the needle into the head space and removing said needle, the closure member ensuring itself a seal.
- a membrane that can only be a barrier to the liquid during hot filling, for example because the liquid will not pass behind the membrane and then the closure member is perforated which introduces possible organisms included behind the membrane that will migrate into the container.
- the fact of injecting the gaseous fluid into the head space while the needle is still inserted through the closure member can cause a projection. of liquid contained in the container on the needle and thus cause a sterility problem of the needle.
- the piercing needle used is a hollow hypodermic needle with a beveled end which is liable to break during piercing and which is also likely to create cork plastic waste in the contents during the piercing of the cap, which would make the contents unfit for human consumption.
- Another device also uses an even more specific cap, that described in the patent application WO 2009142510 A1.
- This plug is manufactured with an opening. After filling, the head space is placed in a pressure vessel, a plug is inserted into the hole provided for this purpose, said cap being immobilized in the hole by mechanical means.
- the present invention aims at solving the drawbacks of the prior art by proposing a method and a device for pressure-conditioning a container to be treated at least partially filled with a content and sealed with a stopper arranged above a head space of the container, said method comprising, inter alia, a step of sealingly engaging a cowl on the outer surface of the plug, a step of drilling a hole through the plug by lowering piercing means towards the stopper, a step of raising the piercing means and a step of introducing a fluid into the headspace of the container via said hole, which allows to proceed in particular to a hot filling using bottles having an overweight of material as low as possible compared to containers used for filling in a cold sterile environment, and which also makes it possible to compensate for the depression in cold-filled containers that can undergo deformation by depression, especially if the containers themselves have a low mechanical strength.
- the piercing means can be raised, before the fluid injection step, while maintaining the pressure between the cap and the cap, which allows to guarantee the sterility of the piercing means during the fluid injection step.
- the subject of the present invention is therefore a process for the pressure-packing of a container to be treated at least partially filled with a content and sealed with a stopper placed above a head space of the container, characterized by the it comprises the following steps: the sealed docking of a hood on the outer surface of the cap, said cap comprising inside thereof piercing means, fluid injection means and melt sealing means; drilling a hole through the stopper by lowering the piercing means towards the stopper; the raising of the piercing means out of the cap; introducing a fluid into the head space of the container via said hole, formed through the cap, using the fluid injection means, so as to obtain a residual pressure at least equal at atmospheric pressure in the head space of the container; plugging said plug hole by melting the plug material by lowering the plugging means by melting to the plug; the recovery of the sealing means by fusion; and removing the hood.
- said pressure-conditioning method of a container to be treated makes it possible in particular to perform a hot filling using bottles having an overweight of material as low as possible compared to the containers used for filling in cold sterile environment, and also makes it possible to compensate for the depression in cold-filled containers which can undergo deformation by depression, especially if the containers themselves have a low mechanical strength.
- the piercing means can be raised, before the fluid injection step, while maintaining the pressure between the cap and the cap, the piercing is therefore "clean" without chips or waste by pushing the plastic material of the cap only, the withdrawal of the piercing means out of the cap during the injection of fluid also to avoid splashing of the contents on the piercing means when introducing fluid that creates turbulence of the surface of the contents, for improved hygiene.
- the plug used in the context of the invention and therefore in this process is a conventional one-piece cap, without internal membrane and therefore inexpensive and easy to recycle.
- the invention is however not limited in this respect.
- the following plugs are also within the scope of the present invention, and may be used with the method of the invention:
- a plug comprising an annular membrane (or liner or liner) hollowed out in its central part, a plug comprising a solid membrane (or inner liner or solid liner) but with a central thickness less than the minimum thickness necessary for self-sealing in the case of a drilling and a subsequent withdrawal of a needle from the plug, this minimum thickness required being below 0.2 mm,
- a plug comprising a solid membrane (or inner liner or solid liner) of thickness between 0.2 mm and 0.8 mm, with a polyethylene / ethylene-vinyl acetate (PE / EVA) type material which does not possess no known self-sealing characteristic after removal of a piercing needle with a diameter of between 0.1 mm and 3 mm.
- PE / EVA polyethylene / ethylene-vinyl acetate
- This method is preferably used for hot content filling, but may also be used for cold content filling.
- the melt sealing means make it possible to seal, by melting the plastic material of the stopper, the hole formed in the stopper by the piercing means, which makes it possible to guarantee the final seal of the container, while compensating for the negative pressure in the container. container.
- the container thus contains a content with a pressure balanced for the least and preferably under a slight pressure so that the internal pressure difference with the external pressure of the container avoids generating any collapse of the container.
- the step of introducing fluid into the headspace comprises introducing a fluid into an initial phase at a first pressure value, and then introducing a fluid into a final phase at a first stage. second pressure value lower than the first pressure value.
- the method further comprises a step of verification, using an optical or inductive means arranged in the cover, of the integrity of the piercing means after the rising step of the piercing means.
- the optical means may be a camera or an optical fiber connected to an optical sensor.
- An optical camera remote hood can control the filling level of the container at the end of the pressure conditioning process to detect a possible breakage of the piercing means. Indeed, during normal processing, the content level must drop to a certain predetermined level, while in case of non-drilling and therefore no introduction of fluid, the level of content will not drop.
- a proximity sensor system could also control the presence of complete and unbroken piercing means, for example a photoelectric or magnetic cell.
- the method further comprises a step of verification, with the aid of an optical camera disposed inside the cover, of the quality of closing the hole by the sealing means by merger.
- An optical camera located on a downstream station on a production line implementing the method is also contemplated in the context of the present invention.
- the fluid in the case of a hot filling at a temperature above 73 ° C., the fluid is introduced into the headspace after cooling the contents to a temperature below 45 ° C. .
- the fluid introduction pressure is configured to generate a residual pressure in the container, between 1.01 bars and 2.5 bars, and preferably between 1.01 bars and 1, 4 bars.
- the fluid is an inert and sterile gas such as nitrogen, especially in gaseous form.
- the method further comprises, before, during and / or after the bonnet docking step, a step of circulating sterile fluid between the cap and the cap, preferably an inert gas, more preferably nitrogen.
- this circulation of sterile fluid prevents bacteria from entering the space between the cap and the cap from the outside, to ensure the sterility of the container.
- An overpressure is created between the cap and the cap to maintain a positive pressure greater than or equal to the internal pressure of the container to the melt shutter.
- the method further comprises, before the cap berthing step on the cap, a step of sterilizing the outer surface of the cap by one or more of a punctual heating, a chemical sterilization , a vapor, a pulsed light emission or the like.
- punctual heating or chemical sterilization using a sterilizing liquid ensures the destruction of pathogenic organisms present on the outer surface of the plug.
- the present invention also relates to a device for pressure packaging a container to be treated at least partially filled with a content and sealed with a stopper disposed above a head space of the container, said device comprising a cover which comprises, inside thereof, piercing means, fluid injection means and fusion closure means, said device being configured to implement the pressure conditioning process as described above.
- the piercing means and the melt-sealing means are arranged in the cap so that their respective axes of displacement are intersecting at a point situated in the plug material or at top of the plug material when the hood is docked on the plug.
- Those skilled in the art will be able to position the axes in the hood according to the shape of the closure means to ensure that the closure means seal the hole created by the piercing means.
- the piercing means and the melt sealing means are inclined with respect to one another so that their respective longitudinal axes of displacement intersect at the same point in the material of the cap or above it.
- said point is at the center of the upper surface of the plug.
- the piercing means are movable, in the position of docking the cap on the cap, between a retracted position and a piercing position to pierce the cap.
- the melt shutter means are movable, in the position of docking the cover on the cap, between a rest position and a closed position to melt seal the hole formed in the cap.
- the piercing means comprise a needle capable of moving linearly.
- the needle is configured to pierce the plug in its piercing position.
- the needle is never in contact with the contents during drilling.
- the needle is solid and has a pointed end in the form of a cone.
- said needle is more solid compared to a hollow hypodermic needle with beveled end, which prevents the needle from breaking during the piercing step.
- Said needle ensures a hole by penetration into the plastic material of the plug, by deformation and repoussage of the material, without tearing material. No plastic waste plug thus falls into the contents of the container.
- the diameter of the drilling hole must allow to combine rapid inflation (largest diameter possible) and welding safety (smallest possible diameter).
- a 0.7 mm diameter needle seems to be a good compromise.
- the diameter of the needle may be between 0.3 and 0.8 times the thickness of the plug.
- the thickness of the plug is defined as the maximum thickness of the flat surface of the plug from which extends the skirt of the cap bearing the thread.
- the needle is heated by a heating means.
- the needle can thus be thermally connected to a resistance type heating element.
- the heating of the needle makes it possible both to sterilize the needle and to facilitate the drilling of the plastic material of the stopper.
- the needle is, of preferably, heated to a temperature above 95 ° C for sterilization and below 130 ° C to prevent possible melting of the plastic material of the plug during drilling and gluing of plastic particles on the needle which could then come off when drilling the cap of another container in a next cycle.
- the temperature of the needle is preferably maintained and continuously monitored by a resistor / probe placed in the needle holder.
- the fusion closure means comprise a heating cannula able to move linearly.
- said heating cannula is configured to melt seal the hole formed in the cap in its closed position, the plastic material of the plug melting in contact with the heating cannula.
- the heating cannula preferably has a convex shape, more preferably a hemispherical shape.
- the respective longitudinal axes of movement of the piercing and sealing means are thus intersecting so that the vertex of the convex shape on the heating cannula touches the hole pierced by the needle in the stopper, when the heating cannula touches the stopper. .
- the fluid injection means comprise at least one fluid inlet adapted to receive a fluid under pressure and to inject it into the interior of the hood sealingly abutted on the plug.
- the present invention further relates to a pressure conditioning machine comprising at least one pressure conditioning device as described above, said pressure conditioning machine further comprising container holding means relative to which the cover of the at least one pressure conditioning device is movable between a rest position remote from the holding means; container position and a docking position in which the hood is docked sealingly on the cap of the container to be treated.
- FIG. 1 is a perspective view of a pressure conditioning device of a container to be treated according to the present invention
- Figure 2 is a detail sectional view of the device of Figure 1 in the non-docked position
- Figure 3 is a sectional view similar to Figure 2 during the docking step
- Figure 4 is a sectional view similar to Figure 2 during the piercing step
- Figure 5 is a sectional view similar to Figure 2 in the fluid introduction step
- Figure 6 is a sectional view similar to Figure 2 during the sealing step
- Figure 7 is a sectional view of the needle of the device of Figure 1. With reference to FIG. 1, it can be seen that there is shown a device for pressure conditioning 1 of a container to be treated 2.
- the container to be treated 2 is at least partially filled with a content and sealed with a stopper 3 disposed above a container head space 2.
- the container 2 undergoes a hot filling, and is a bottle, in particular of PET (polyethylene terephthalate), of low basis weight, with a content, such as a fruit juice, brought to a temperature capable of destroying pathogenic organisms, namely a temperature above 73 ° C, in this case 85 ° C.
- PET polyethylene terephthalate
- a content such as a fruit juice
- the container 2 is filled with the hot content, it is plugged by the plug 3 of known type, namely a screw screw injection molded or compression, monolithic and monomatiere, free of any additional sealing element.
- the seal is obtained by contact under mechanical pressure of the material of the plug 3, in this case its inner face, on the material of the peripheral edge of the neck 2a of the container 2, the screwing to exert said mechanical pressure required.
- said cap 3 When closing, said cap 3 leaves a head space. This space results from filling without overflow because the content should in no way overflow and end up on the lip of the neck 2a before closing because the content would then be an entry door under the cap 3 and the container 2 would be unfit for sale .
- the plug 3 is free from any mechanism or other pressure compensation accessory. Air trapped in the head space is hot but at atmospheric pressure.
- the present invention also applies to certain plugs commonly used, particularly in the United States, which are bi-material type with an inner membrane used to ensure only the seal between the surface of the neck of the container 2 and the cap 3 by compression during screwing, unlike the inner lip for the monomatiere-type plugs.
- this inner membrane for such a bi-material cap does not have the necessary characteristics to ensure a self-sealing of the plug in the case of a piercing with a needle and then a withdrawal of the needle out of the cap.
- the container 2 is able to receive a content at the sterilization temperature retained without degradation but is free of depression compensation means.
- the container 2 is set in motion immediately after filling with the contents, in order to put all the internal surfaces of the container 2 in contact with the contents brought to the sterilizing temperature.
- the container 2 and its contents are then cooled in a cooling tunnel by water spraying, for example to bring the assembly close to the ambient temperature.
- the pressure conditioning device 1 comprises a cover 4, also called docking head, which comprises inside the latter piercing means 5, fluid injection means 6 and closure means by merger 7.
- the pressure conditioning device 1 further comprises a horizontal lower support 8 on which the container 2 is positioned, a horizontal upper support 9 comprising a notch 9a in which the neck 2a of the container 2 is inserted, and a vertical support 10 to which are connected the lower support 8 and the upper support 9.
- the cover 4 is vertically movable, by means of a vertical displacement motor 11, between a rest position remote from the upper support 9 and a docking position in which the cover 4 is sealed against the stopper 3 of the container to be treated 2. It is understood that the invention is not limited in this respect: either the hood is movable, docked on the container brought under the hood, or the hood is fixed, the container being brought into the hood.
- the pressure conditioning device 1 is configured to implement a pressure-conditioning process of the container to be treated 2 which comprises the following steps: sealing the bonnet 4 on the outer surface of the plug 3; drilling a hole through the stopper 3 by lowering the piercing means 5 towards the stopper 3; the raising of the piercing means 5 out of the plug 3; introducing a fluid into the head space of the container 2 by through said hole, formed through the plug 3, using the fluid injection means 6, so as to obtain a residual pressure at least equal to the atmospheric pressure in the headspace of the container 2; closing said plug hole 3 by melting the plug material 3 by lowering the muffling closure means 7 towards the plug 3; the rise of the sealing means 7 by fusion; and removing the cover 4.
- the various process steps will be described in more detail in Figures 2 to 6.
- the method according to the invention can be implemented in a production line, with one or more stations upstream or downstream, in which case a conveying device will transport the container to the position of the production line implementing the process according to the invention.
- the pressure-conditioning method according to the invention makes it possible to proceed in particular to a hot filling using bottles having an overweight of material as low as possible compared to the containers used for the filling in cold sterile environment, and also makes it possible to compensate for depression in cold-filled containers that may be deformed by vacuum, especially if the containers themselves have poor mechanical strength.
- the piercing means 5 can be raised, before the fluid injection step, while maintaining the pressure between the cap 4 and the cap 3, the piercing is "clean" without chips or waste by pushing the plastic material of the cap 3 only, the removal of the piercing means 5 during the injection of fluid also to avoid possible splashing of the contents on the piercing means 5 for improved hygiene.
- the plug 3 used in this process is a conventional one-piece plug, without internal membrane and therefore inexpensive.
- the container 2 thus contains a content with a pressure balanced for the least and preferably under a slight pressure so that the internal pressure difference with the external pressure of the container 2 avoids generating any collapse of the container 2.
- the container 2 is partially filled with a content 12 so that a head space 13 without content remains at the neck 2a of the container 2, the container 2 being sealed by the cap 3 disposed above the container. head space 13 of the container 2.
- the piercing means 5 comprise a piston 14 at the end of which is fixed a needle 15, said piston 14 being able to move linearly in a cylinder 16 formed on the cover 4, the stroke of the piston 14 being limited by a chamber of piston 17 formed in the upper end of the cylinder 16.
- the needle 15 is configured to pierce the cap 3 when the cap 4 is docked on the cap 3 and the piston 14 is in its extended position.
- the melt sealing means 7 comprise a piston 18 at the end of which is fixed a heating cannula 19, said piston 18 being able to move linearly in a cylinder 20 formed on the cover 4, the piston 18 being limited stroke by a piston chamber 21 formed in the upper end of the cylinder 20.
- the pistons 14 and 18 can be actuated electrically or hydraulically. In order not to overload the figures, the power supply or hydraulic actuation son of the pistons 14 and 18 have not been shown in the figures. Similarly, the heating elements for heating the needle 15 or the heating cannula 19, and their respective power supplies, have not been shown to not overload the figures.
- the heating cannula 19 is configured to melt seal the hole formed in the cap 3 by the needle 15 when the cap 4 is docked on the cap 3 and the piston 18 is in its extended position, the plastic material of the cap 3 melting in contact with the heating cannula 19.
- the needle 15 and the heating cannula 19 are located in an internal cavity 22 of the cover 4.
- the fluid injection means 6 comprise a plurality of fluid inlets adapted to receive a pressurized fluid and to inject it into the internal cavity 22 of the cover 4, the cover 4 being able to contain up to five inputs of fluid 6.
- the pressure-conditioning method also comprises, before the step of docking the cap 4 on the cap 3, a step of sterilizing the outer surface of the cap 3 by spot heating, by chemical sterilization using a liquid sterilizing, steaming, pulsed light emitting or other similar process to ensure the destruction of pathogenic organisms on the outer surface of the plug 3.
- the internal cavity 22 of the cover 4 is always overpressured with sterile gas by a first inlet of fluid 6, even before docking to maintain the sterility of the cap 3 previously performed.
- the last two fluid inlets 6 could be used for the injection of a sterilizing fluid after the docking and drilling and a rapid suction evacuation of the sterilizing fluid before drilling.
- the pistons 14 and 18 respectively of the needle 15 and the heating cannula 19 are in their retracted positions, also called rest positions.
- the cover 4 is sealed against the outer surface of the stopper 3 so that at least a portion of the stopper 3 is inserted into at least a portion of the internal cavity 22 of the cover 4.
- the pistons 14 and 18 are arranged in the cover 4 so that their respective axes of displacement are intersecting at a point situated in the material of the cap 3 or slightly above it when the cap 4 is approached on the plug 3, said point being preferably at the center of the upper surface of the plug 3, or slightly above, eccentric, depending on the shape of the heating cannula 19.
- the pressure conditioning process may also comprise, after the step of docking the cover 4 on the plug 3, a step of circulating sterile fluid, preferably an inert gas such as nitrogen, into the internal cavity 22 of the hood 4 by through some of the fluid inlets 6.
- An overpressure is created between the cap 3 and the cap 4 to maintain a positive pressure greater than or equal to the internal pressure of the container 2 to the melt shutter.
- the piston 14 of the needle 15 is in its extended position, so that the needle 15 is lowered to the cap 3 and pierces a hole 23 through the material of the cap 3.
- the needle 15 is never in contact with the contents 12 during drilling.
- the needle 15 makes the hole 23 by penetration into the plastic material of the plug 3, by deformation and embossing of the material, without tearing material.
- This drilling step is immediately followed by a step of raising the needle 15 in the rest position of the piston 14.
- the pressure conditioning method may also comprise a verification step, using an optical camera or optical fiber connected to an optical sensor (not shown in FIG. 4) disposed in the cover 4, of the integrity of the the needle 15 after the step of raising the needle 15, thus making it possible to optically verify whether the needle 15 is or not broken after the piercing step.
- An optical camera remote hood can control the filling level of the container 2 at the end of the pressure conditioning process to detect a possible breakage of the needle 15. Indeed, during normal processing, the level of content 12 must go down up to a predetermined level, while in case of non-drilling and therefore no introduction of fluid, the level of the content 12 will not drop.
- a proximity sensor system could also control the presence of the complete and unbroken needle without departing from the scope of the present invention.
- the pistons 14 and 18 respectively of the needle 15 and the heating cannula 19 are in their rest positions.
- a fluid 24 is introduced into the internal cavity 22 of the cover 4 and then into the head space 13 of the container 2 via the hole 23, formed through the stopper 3, using one of the inputs of FIG. fluid 6, so as to obtain a residual pressure at least equal to the atmospheric pressure in the head space 13 of the container 2.
- the fluid 24 is an inert and sterile gas such as nitrogen, especially in gaseous form, which makes it possible not to cause subsequent oxidation of the contents 12, subsequent to bottling. This avoids over-collapsing due to the subsequent oxygen consumption as there is none or very little, the inert gas having largely replaced the initially confined air.
- an inert and sterile gas such as nitrogen, especially in gaseous form, which makes it possible not to cause subsequent oxidation of the contents 12, subsequent to bottling. This avoids over-collapsing due to the subsequent oxygen consumption as there is none or very little, the inert gas having largely replaced the initially confined air.
- the fluid 24 is introduced into the head space 13 after cooling the contents 12 to a temperature below 45 ° C.
- the fluid introduction pressure 24 is configured to generate a residual pressure in the containing 2, between 1.01 bar and 2.5 bar, and preferably between 1.01 bar and 1.4 bar.
- the step of introducing the fluid 24 into the head space 13 preferably comprises a fluid introduction 24 in an initial phase at a first pressure value, then a fluid introduction 24 in a final phase at a second pressure value lower than the first pressure value. It is thus possible to greatly increase the pressure in the initial phase of the pressurization immediately after the piercing, and to have a lower pressure in the final phase in order to adjust the final pressure just before the fusion plugging. .
- the piston 18 of the heating cannula 19 is in its extended position, so that the heating cannula 19 is lowered to the hole 23 formed in the stopper 3 by the needle 15.
- the heating cannula 19 can, by melting the plastic material of the plug 3, seal up the hole 23 formed in the plug 3, which makes it possible to guarantee the final seal of the container 2 while compensating for the depression in the container 2.
- the shutter step is performed within a period of between 0 and 5 seconds.
- the pressure conditioning method may also comprise a verification step, with the aid of an optical camera (not shown in FIG. 6) disposed in the internal cavity 22 of the cover 4, of the hole closure quality 23 by the heating cannula 19, which thus makes it possible to verify optically whether the Hole sealing quality 23 by the heating cannula 19 is good or bad.
- the shutter step is followed by a step of raising the heating cannula 19 in the rest position of the piston 18, then a step of removing the cover 4 from the stopper 3.
- the method according to the present invention allows hot filling in containers 2, for example in
- PET with reduced grammages of the order of 15% compared to the hot filling process with deformation of the container, which is a considerable reduction of material in view of the coefficient multiplier of the number of containers 2 produced.
- the forms of containers 2 are in fact much more free and sober, and recycling is less expensive since the amount of material used is less.
- the method according to the present invention applies to all the filling modes and even for a pressurization of cold-filled containers 2 in a sterile environment, of which it would be desirable not only to compensate for a possible decrease in the volume of the head space 13 by consumption of oxygen, but also put in slight overpressure to enhance the mechanical strength, or even inject a neutral gas to replace the air confined in the head space 13 to maintain all the organoleptic qualities of the products that the oxidation can alter.
- Figure 7 it can be seen that there is shown the needle 15 of the pressure conditioning device 1.
- the needle 15 is force-fitted into a substantially cylindrical needle holder 25, said needle holder 25 including an end 25a, opposite the needle 15, configured to press into the end of the needle. piston 14.
- the needle 15 is cylindrical and solid and has a pointed end in the form of a cone.
- the needle 15 is stronger compared to the hollow hypodermic needle with a beveled end of the prior art, which prevents the needle 15 from breaking during the piercing step.
- the needle 15 is preferably heated by a heating means (not shown in FIG. 7), the heating of the needle 15 making it possible both to sterilize the needle 15 and to facilitate the drilling of the plastics material.
- the needle 15 is preferably heated to a temperature above 95 ° C for sterilization and below 130 ° C to prevent possible melting of the plastic material of the plug 3 during drilling and gluing. plastic particles on the needle 15 which could then become detached during the drilling of the cap 3 of another container 2.
- the temperature of the needle 15 is preferably maintained and continuously monitored by a resistor / probe placed in the needle holder 25.
- the diameter of the drilling hole must allow to combine rapid inflation (largest diameter possible) and welding safety (smallest possible diameter).
- a 0.7 mm diameter needle seems to be a good compromise. It is understood that the invention is not limited in this respect, the diameter of the needle may be between 0.3 and 0.8 times the thickness of the plug.
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
- Vacuum Packaging (AREA)
- Basic Packing Technique (AREA)
- Closing Of Containers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1660719A FR3058395B1 (fr) | 2016-11-04 | 2016-11-04 | Procede et dispositif de conditionnement en pression d'un contenant a traiter et machine de conditionnement en pression associee |
PCT/FR2017/053003 WO2018083418A1 (fr) | 2016-11-04 | 2017-11-02 | Procede et dispositif de conditionnement en pression d'un contenant a traiter et machine de conditionnement en pression associee |
Publications (2)
Publication Number | Publication Date |
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EP3535189A1 true EP3535189A1 (fr) | 2019-09-11 |
EP3535189B1 EP3535189B1 (fr) | 2021-01-06 |
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ID=57963302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP17811983.0A Active EP3535189B1 (fr) | 2016-11-04 | 2017-11-02 | Procede et dispositif de conditionnement en pression d'un contenant a traiter et machine de conditionnement en pression associee |
Country Status (7)
Country | Link |
---|---|
US (1) | US20190283911A1 (fr) |
EP (1) | EP3535189B1 (fr) |
JP (1) | JP6952771B2 (fr) |
CN (1) | CN109923042B (fr) |
BR (1) | BR112019008990A2 (fr) |
FR (1) | FR3058395B1 (fr) |
WO (1) | WO2018083418A1 (fr) |
Families Citing this family (2)
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DE102016119890A1 (de) * | 2016-10-19 | 2018-04-19 | Krones Aktiengesellschaft | Verfahren und Vorrichtung zum Herstellen von Getränkebehältnissen mit Rückkühlung und Gaszufuhr |
JP7260121B2 (ja) * | 2019-06-26 | 2023-04-18 | 積水メディカル株式会社 | 体液採取容器の製造方法及び打栓装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2322062A1 (fr) | 1975-08-28 | 1977-03-25 | Carnaud Total Interplastic | Procede et dispositif de bouchage pour recipients en matiere deformable |
US6604561B2 (en) * | 2000-02-11 | 2003-08-12 | Medical Instill Technologies, Inc. | Medicament vial having a heat-sealable cap, and apparatus and method for filling the vial |
CN1269696C (zh) * | 2003-04-18 | 2006-08-16 | 诺亚公司 | 无封嘴封口的容器与其制造方法 |
KR20060028571A (ko) * | 2004-09-25 | 2006-03-30 | 주식회사리팩 | 백 포장기 |
US20120311966A1 (en) * | 2009-11-18 | 2012-12-13 | David Murray Melrose | Pressure sealing method for headspace modification |
TWI472459B (zh) * | 2008-05-19 | 2015-02-11 | Melrose David | 移除真空壓力之頂部空間改性方法及其裝置 |
US20150121807A1 (en) * | 2013-11-04 | 2015-05-07 | Silgan White Cap LLC | Fluid injection system and method for scavenging oxygen in a container |
FR3035876B1 (fr) * | 2015-05-05 | 2019-04-19 | Jalca | Procede de traitement en surpression d'un contenant avec son contenu apres remplissage et bouchage |
-
2016
- 2016-11-04 FR FR1660719A patent/FR3058395B1/fr not_active Expired - Fee Related
-
2017
- 2017-11-02 CN CN201780067198.7A patent/CN109923042B/zh active Active
- 2017-11-02 EP EP17811983.0A patent/EP3535189B1/fr active Active
- 2017-11-02 BR BR112019008990A patent/BR112019008990A2/pt not_active Application Discontinuation
- 2017-11-02 US US16/347,749 patent/US20190283911A1/en not_active Abandoned
- 2017-11-02 WO PCT/FR2017/053003 patent/WO2018083418A1/fr unknown
- 2017-11-02 JP JP2019522681A patent/JP6952771B2/ja active Active
Also Published As
Publication number | Publication date |
---|---|
BR112019008990A2 (pt) | 2019-07-16 |
CN109923042A (zh) | 2019-06-21 |
EP3535189B1 (fr) | 2021-01-06 |
CN109923042B (zh) | 2021-07-02 |
US20190283911A1 (en) | 2019-09-19 |
WO2018083418A1 (fr) | 2018-05-11 |
JP6952771B2 (ja) | 2021-10-20 |
JP2019536700A (ja) | 2019-12-19 |
FR3058395B1 (fr) | 2018-11-09 |
FR3058395A1 (fr) | 2018-05-11 |
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