WO1995015887A2 - Procede d'inertage de housses d'emballage, dispositifs pour la mise en ×uvre dudit procede, ainsi que housse d'emballage utilisee - Google Patents
Procede d'inertage de housses d'emballage, dispositifs pour la mise en ×uvre dudit procede, ainsi que housse d'emballage utilisee Download PDFInfo
- Publication number
- WO1995015887A2 WO1995015887A2 PCT/BE1994/000093 BE9400093W WO9515887A2 WO 1995015887 A2 WO1995015887 A2 WO 1995015887A2 BE 9400093 W BE9400093 W BE 9400093W WO 9515887 A2 WO9515887 A2 WO 9515887A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cover
- packaging
- valve
- inert gas
- packaging 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- 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
-
- 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
- B65D81/2069—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 in a special atmosphere
- B65D81/2084—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 in a special atmosphere in a flexible container
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/08—Check valves with guided rigid valve members shaped as rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
-
- 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
- B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D2565/38—Packaging materials of special type or form
- B65D2565/381—Details of packaging materials of special type or form
- B65D2565/387—Materials used as gas barriers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
Definitions
- the present invention relates to a method of inerting waterproof packaging covers, a machine and valves for implementing such a process, as well as said packaging covers used, which are intended more particularly for industrial packaging. of products liable to deteriorate under the action of humidity, oxygen and external pollution of many types.
- inerting refers to any means making it possible to place products as defined above and detailed in the text below under an inert atmosphere.
- the installation of the non-woven fabric cover and the reinforcing or wedging elements placed inside the packaging are labor-intensive, which results in a cost which n is not to be overlooked.
- the reinforcing elements are expensive and often introduce moisture or other pollution inside the packaging.
- desiccants are rarely heated to make them completely anhydrous and are used as is. As they are themselves packed in packaging containing moisture, they are already saturated with water when they are placed in the packaging and reject their excess moisture in the internal part of the packaging.
- the vacuum is applied using a vacuum cleaner held by a worker above the opening of the cover which remains open after the cover has been partially closed and the whole is sealed by another worker to using heating tongs. Needless to say, this vacuum is only partial, which implies that moisture or other pollution remains in the cover.
- the covers found on the market are relatively porous and allow moisture or other pollution to pass through.
- they are very fine and are easily perforated, which has the effect of making them very sensitive to any manipulation, in particular at the welds.
- Document US-A-4, 344,467 describes a machine which continuously controls the evacuation of oxygen and the filling with inert gas of any cover.
- This single evacuation / feeding device is introduced into an orifice of the cover in a non-waterproof manner.
- no system is provided for closing the cover, which has the drawback that the final oxygen content of the cover is not known with precision.
- the machine is also fixed and intended * to be used continuously on a single package.
- US Patent 3,521,806 relates to packaging intended to protect perishable products, such as flowers and food. It also describes the use of a device which simply consists in sending an inert gas via a pipe which expels the air inside the packaging through another pipe without any control.
- the document FR-A-2218250 relates to a process in which a certain vacuum is made in a plastic envelope and nitrogen is blown in through air chamber valves after having deposited in said envelope bags of desiccant. Again, no measurement or control, and more particularly of the relative humidity level inside the envelope, is described.
- the document FR-A-2653405 effectively relates to industrial packaging in which a forced circulation of air is carried out by expelling the internal atmosphere onto desiccants.
- a stationary machine is described, which in this way allows the internal atmosphere of the industrial packaging to be dried up and which starts up again each time sensors detect a change in humidity.
- Document DE-2129706 describes a machine which is intended to allow the conservation of food products. This machine is used for storage and transport in the form of a large cabinet. The internal part can be heated or cooled. Aims of the invention.
- the present invention relates to a process for inerting packaging covers, and more particularly industrial packaging, which contain products liable to degrade under the action of humidity, oxygen or any other external pollution.
- the present invention aims in particular to propose a method and a device which are simple, very economical and easily achievable on any work site.
- the present invention aims to propose a method and an inerting device which can allow very long-term storage.
- the present invention also aims to propose a method and a device which make it possible to reduce the risks of explosion.
- the present invention also aims to protect a machine for implementing the method according to the invention, which must be particularly simple in design, inexpensive and of a very small size.
- the present invention also aims to provide valves which can be adapted directly to the packaging cover in a completely sealed manner, and which are intended for the implementation of the method.
- the present invention aims in particular to provide valves which are of simple design while being extremely robust.
- the present invention finally aims at providing a packing case which must be particularly resistant and which is due in in particular a very high tensile strength, a tear resistance and a puncture resistance.
- the present invention relates firstly to a method of inerting, that is to say of placing under an inert atmosphere, which makes it possible to satisfy the requirements mentioned above.
- This process is intended for packaging, and in particular for industrial packaging, and is characterized in that the following operations are carried out:
- the object to be packed is placed on at least one composite sheet which serves as a packaging cover, which is closed in a completely sealed manner, with the exception of at least two orifices which are used on the one hand to extract the internal atmosphere present in the packaging cover and on the other hand to inject an inert gas, preferably nitrogen, into said cover, - an extraction of the internal atmosphere present in the cover is carried out packaging, via a first valve adapted in a perfectly sealed manner to a first orifice of the packaging cover and an injection of inert gas via a second valve adapted in a completely sealed manner to a second orifice of the packaging cover,
- a measurement is constantly made of a parameter linked to the relative humidity level prevailing in the packaging cover, the operations for extracting the internal atmosphere present in the packaging and injection cover are completed inert gas when the required relative humidity has been reached according to the needs of the end customer,
- a slight depression is first carried out by extraction of the internal atmosphere present in the packaging cover and then, when the latter is completed, an inert gas injection is carried out so as to immediately compensate for the slight depression created within the packaging cover.
- the two orifices intended to allow the extraction of the internal atmosphere and to inject the inert gas into the packaging cover are disposed in a completely opposite manner on said cover.
- the inerting process can also be improved depending on customer needs. For example, we can consider varying the number of sensors to indicate other variables such as pressure, temperature, oxygen, pH, etc ... or to indicate on a liquid crystal display not only the values of these variables , but also other graphical representations as a function of time within the framework of specific customer needs. These variables have their importance when one wants to adjust all these variables according to criteria other than those mentioned above for the transport of products comprising rubber seals which would inevitably dry out if the atmosphere consisted only of nitrogen.
- purges which are inverted valves and which are preferably calibrated appropriately to compensate for the increase in volume inside. of the cover due to the pressure reduction due to the altitude inside the hold. All these improvements fall within the scope of the present invention.
- the inert gas used is preferably nitrogen because it is first of all inert, but also because it is dry and drying.
- nitrogen is economically as in practical terms the preferred gas.
- the nitrogen used will be almost pure nitrogen according to the recommendations of the company "L'Air Liquide”. If necessary, for food preservation uses, food nitrogen will also be used according to the recommendations of L'Air Liquide. For all these types of nitrogen, Air Liquide guarantees the absence of a dew point down to - 60 ° C, which avoids any condensation inside the packaging.
- the actual inerting process takes place in such a way that the pressure inside the packaging cover is constantly close to equilibrium with the external atmosphere. Possibly, during the process, and more particularly during a process carried out in the form of a cycle, there may remain a slight depression by relation to the external atmosphere, which aims to create a call for inert gas. This slight depression is always offset by the introduction of inert gas.
- the humidity level As far as the humidity level is concerned, it depends on the needs of the end customer. In the majority of cases, it is desired to obtain a humidity level of less than 30%, so as to avoid any oxidation.
- FIG. 1 represents a flowchart of the general structure of the machine of the invention. All the elements which appear there are standard components which exist on the market.
- the valve (3) can be a modulating valve, and is more particularly recommended in the case where one works in simultaneous mode.
- the valve modulates and regulates the flow of inert gas over the volume of the atmosphere simultaneously extracted from the cover, so that the pressure prevailing inside the packaging cover (100) is at roughly equivalent to the external atmosphere.
- the valve can simply be a solenoid valve which controls the opening or closing of the source of inert gas.
- This valve (3) is possibly connected to an additional valve which is a manual isolation valve (5).
- a safety pressure switch (6) is also present between the valve (3) and the isolation valve (5), and allows in the event of overpressure to close an additional valve (4) which is in the form of a solenoid and which is a protection valve.
- the isolation valve (5) essentially makes it possible, during transport, to avoid the introduction of undesirable particles into the internal pipes.
- This isolation valve (5) is connected to the packaging cover (100) by a flexible connector (21) which is fixed directly on a sealed valve (200) which will be described in more detail below.
- the second enclosure as shown in dotted lines in FIG. 1 represents the connection of a vacuum pump (10) or of any device intended to create a slight depression with the packaging cover (100).
- the vacuum pump (10) or any equivalent device is connected to a flow control valve bearing the reference (15).
- This valve is connected to a non-return valve (17) via a pressure transmitter (13) which, based on the principle of strain gauges, will give a signal (from 4 to 20 mA or from 0 to 10 V) corresponding to the pressure in the packaging cover (100).
- the adjustment valve (15) is connected to the cover (100) via a flexible connector (23), which itself attaches to a valve (202) which will also be described below.
- a humidity sensor (11) is present between the cover (100) and the adjustment valve (15). According to a preferred embodiment, this humidity sensor (11) can be directly integrated into the valve (202) as described below.
- the measurements given by the humidity sensor (11) and the pressure transmitter (13) define either the degree of opening of the valve (3) in the case where this valve is a modulating valve, or the opening time of this valve (3) in the case where this is a solenoid valve, this using the programmable controller.
- the non-return valve (17) allows, at the end of the air replacement process with an inert gas, to automatically isolate the internal atmosphere of the packaging cover (100) from the external atmosphere by cutting it of the vacuum pump (10) or any equivalent device. In this way, by closing this valve (17), a pressure and humidity measurement is carried out which reflects the reality inside the packaging cover (100).
- the non-return valve (17) operates automatically at the end of each replacement of the air extracted with an inert gas. In the case of a longer operation, an additional manual valve is required.
- the flow rate of the vacuum pump (10) or any equivalent device can be modified depending on the objects to be packed. In most cases, an average power of 35 to 65 m 3 per hour is sufficient. In this case, a normal packaging operation takes a few minutes.
- the programmable controller present on the face of the machine for implementing the method according to the invention is known per se and will not be described below *.
- the machine differs from the machines which are on the market insofar as it does not have an injection pump, the regulator of a nitrogen bottle taking the place of injector can be adjusted to a determined pressure, for example 6 or 8 bars, easily.
- the machine is compact and can be easily transported in a van on any site, which is not the case with the machines of the prior art.
- the machine according to the invention is inexpensive and can therefore be within the reach of many medium-sized companies or producers, which is not "the case with the machines of the prior art either.
- existing machines are almost exclusively intended for food products, while the machine of the present invention has a more general use, in particular in the field of packaging and storage of industrial products.
- the machine according to the invention is practical, compact, simple in design and inexpensive.
- valves used are valves specially designed according to the present invention which are simply attached to the material of the cover. These valves allow a simple depression to be carried out by air extraction or to inject an inert gas such as nitrogen into a sealed enclosure which is a packaging cover. They are generally made of a plastic material such as PVC, Teflon or another material of the same type for reasons of economy, but can also be made of other suitable plastics commercially.
- the valve (200 or 202) generally comprises a body made up of a series of elements to be assembled beforehand, namely a diffuser (101), a spring (104 ), a shutter in the form of a circular plate (105), a seal (110) preferably made of rubber or of a suitable plastic and a circular ring (109) which allows the sealing to be fixed in the orifice of the packaging cover (100).
- the diffuser (101) is in the form of a short cylindrical tube, the wall of which has, regularly spaced around its periphery, four circular orifices (102) large enough to allow the application of a vacuum or the injection of nitrogen.
- the diffuser (101) is externally threaded on its lower part.
- the diffuser (101) is intended to be mounted on the ring (109) which itself has on its upper part a circular recess
- a circular joint (110) will be mounted in the circular recess (106), between the diffuser (101) and the ring (109). He will be held in place and slightly crushed when the diffuser (101) is screwed onto the ring (109), thereby ensuring a perfect seal.
- the circular seal (110) and the ring (109) Before assembling the diffuser (101), the circular seal (110) and the ring (109), the spring (104) and the circular plate serving as a shutter (105) will be placed inside the diffuser (101) in the order shown in figure 2.
- the ring (109) generally consists of a circular flange (107) on its upper part - which has the circular recess (106) internally threaded mentioned above - and a short tubular part (108) of smaller diameter on its lower part.
- This short tubular part (108) is intended to pass through the orifice made in the cover (100) using a cookie cutter.
- This short tubular part (108) is externally threaded to be screwed onto a nut (111) which is mounted on the other side of the cover (100).
- the nut (111) is in the form of a ring approximately the same diameter as the circular flange (107) of the ring (109) and is provided with a central hole internally threaded to be screwed on the short tubular part. (108).
- This short tubular part (108) will protrude slightly from a nut (111) which serves to fix the packaging cover (100). The assembly of the assembly is easy and is done by simple screwing. In addition, the valve takes up little space and merges tightly into the cover
- a short sleeve (112) internally threaded at one end is able to be screwed onto the short cylindrical part (108).
- This sleeve (112) is an intermediate piece between the valve and an end piece (115) of a flexible connector leading either to the nitrogen bottle or to the vacuum pump.
- the sleeve (112 ' is not intended to remain on the valve, because the latter overshoot too strongly and could be caught by various objects during crating, which could damage the valve and possibly break the sealing of the cover.
- the sleeve (112) will be removed each time and can therefore be reused multiple times.
- the junction between the sleeve (112) and the end piece (115) must ensure a certain seal between the elements and guarantee rapid disassembly without too great a loss of seal. It is produced by a key system.
- the outer envelope of the sleeve (112) is slightly frustoconical, the part facing the cover having the largest diameter.
- the interior of the end piece (115) has the same taper, which ensures better sealing when the two parts are nested one inside the other.
- the sleeve (112) has a groove (113) which is, in a first part, as shown in Figure 2, parallel to the axis of the sleeve over a distance of a few centimeters and then make an angle of plus or minus 100 ° down from the axial direction in a clockwise direction to form a retaining portion.
- a groove (113) which is, in a first part, as shown in Figure 2, parallel to the axis of the sleeve over a distance of a few centimeters and then make an angle of plus or minus 100 ° down from the axial direction in a clockwise direction to form a retaining portion.
- the end piece (115) is pressed on the sleeve (113) and, when it reaches the end of its travel, it is subjected to a rotation in a clockwise direction until the respective internal and external surfaces of the end piece (115) and of the sleeve (112) stick to one another.
- a metal rod (114) projects from the end piece (115) over a determined length. This length is studied so that, when the end piece (115) is fixed on the sleeve (112), the point facing the valve is supported on the spring plate (105) to compress the spring (1 * 04). To promote the compression movement, the end of the rod (114) of the nozzle (115) facing the valve has a flared shape which allows it to rest validly on the circular plate (105), in the center thereof.
- the metal rod (114) will be fine enough for the most part not to disturb the passage of the gas flows, but care will be taken to avoid any risk of buckling of said rod (114) which is stressed under compression.
- the nozzle (115) can be incorporated into the flexible connection leading to the vacuum pump or to that leading to the nitrogen bottle. It can also constitute an independent part capable of being connected to the ends of such fittings. In the case of a stock of materials to be checked regularly, the nozzle (115) can be connected to the nozzle of a humidity sensor.
- the spring (104) will be dimensioned so as to withstand pressure differences between the inside and the outside of the cover (100) of about 1 bar, or a little less.
- the system described is preferred because it ensures a passage of the gas flow without eddies, or development of forces due to pressure by a simple mechanical action.
- the mechanical system developed in the valve of the invention makes it possible to use a single and same valve for two different operations.
- the two complementary elements formed by the sleeve (112) and the end piece (115) will be made of plastic or metal, the rod (114) of metal to ensure greater solidity.
- the sleeve (112) and the corresponding end piece (115) can also be made in one piece according to another embodiment, provided that the valve can be actuated by a rod system as described above or another somehow.
- valve according to the invention can be used as a drain when it is mounted upside down, that is to say with the diffuser (101) outside the cover (100).
- the spring (104) placed inside the diffuser (101) will be calibrated more or less at a bar if one works with equipressure or more if one works with slight overpressure.
- This valve mounted upside is of great importance in the case of transport of products "flight.
- the packaged products are placed in the holds of transport aircraft. These compartments are packed, but imperfectly so that during the flight, the decrease in pressure in the hold results in swelling of the cover which can go as far as the bursting of the cover.
- the valve according to the invention will serve as a purge to eject the nitrogen overflow outside, even if it means re-inflating the cover on arrival.
- the diffuser (101) owes its name to its diffusion action, which disseminates nitrogen regularly in all directions, causing eddies inside the cover (100) which will dislodge moisture in all corners of the cover (100), helped in this by the action of the vacuum pump. Furthermore, if one wants to recover one and / or the other of the valves, it is possible, as mentioned above, to mount them on legs intended to be sectioned subsequently.
- the lateral arrangement of the orifices (102) allows the valve to fulfill its function, while normal valves with longitudinal flow could not function insofar as they are pressed against the wall of the leg, which would prevent the flow of nitrogen to enter the leg normally and would cause it to rupture. In the case of the valve connected to the vacuum pump, the tab would be pressed against the vacuum port and the action of the vacuum pump would be canceled, which could lead to overheating of the vacuum pump.
- valves are preferably used in number two, arranged diagonally to facilitate the sweeping of the nitrogen and to eliminate the humidity in the smallest corners of the cover.
- the invention also relates to the use of any system using a rod pressing a plate at the bottom. 'against a spring and other variants, in separate or joint form, may be used without departing from the scope of the invention.
- the present invention also covers the use of a sensor, and more particularly of a capacitive sensor, which allows a measurement of the relative humidity level inside the cover.
- This sensor will preferably be integrated into the valve described above. According to this embodiment, it is conceivable and even recommended to leave the sensor in the valve after having carried out and completed the inerting process of the packaging cover. In this way, measurements and controls of the relative humidity level inside the packaging cover can be carried out throughout the storage period.
- the storage period can be almost indefinite, if the materials under covers are regularly monitored and the covers are not handled.
- conditioned or at least non-humid warehouses are provided. In the context of the invention, it can be stored in any room, or even outside under lean-to, taking normal precautions without more.
- XF XF between 70 and 300 g / m 2
- the XF consists of a biaxially stretched laminated film of polyolefins in 3 or 4 layers, the central part of which, present at 70 to 80%, consists of a mixture of olefins so as to obtain, by rolling and drawing , a crisscross arrangement which gives superior resistance.
- the XF is a film of between 70 and 180 g / m 2 . This quality can be used in overpressure or in equippressure according to the needs.
- the present invention also relates to all the products produced with films similar to the XF film.
- MILPAC 113 As examples of products which are particularly suitable, mention may be made of the products sold under the names MILPAC 113, MILPAC 113+, MILPAC 143 and MILPAC 153 described in more detail below.
- MILPAC 113 compound as follows: - 17 g / m 2 metallized polyester
- MILPAC 113- composed as follows
- MILPAC 143 composes as follows:
- each layer is fixed to the previous one by extrusion and not by lamination.
- the adhesive often weakens during high temperature welding, thus creating a weakening zone which manifests itself by a very low resistance of the weld to tearing.
- GM24 (Rhône Poulenc) composed as follows: polyester, aluminum, linear polyethylene, in which the connections between successive layers are carried out by adhesive bonding
- VACUMATIC (Brangs + Heinrich) composed as follows: polyester, aluminum, - Valéron, in which the connections between successive layers are made by bonding during extrusion
- VALSEM S165 (SNEC) composed as follows: polyester, aluminum,
- MOISTOP 662 composed as follows: polyester, - aluminum, linear polyethylene, in which the connections between successive layers are made by bonding during extrusion
- the products Conventional either consist of linear polyethylene which does not exhibit resistance to initiated tearing, or comprise a Valéron layer which is a biaxial and flat film consisting of two films having fibers in different directions and assembled.
- Table I represents the resistance of the welds to pulling out for welds carried out by heating bars under 2 conditions: Condition (1): temperature of 190 ° C. for 3 seconds at a pressure of 3 bar Condition (2): temperature of 170 ° C for 2 seconds at a pressure of 3 bar
- Condition (1) Condition (2)
- Table II represents the pull-out and tensile strength for impulse welds.
- Table III represents the resistance to initiated tearing (French standard BS 2782), either in the machine direction or in the transverse direction.
- the mode of. manufacturing and flexibility of the XF film make MILPAC products particularly flexible, and thus ensure perfect support for the aluminum foil which will not be damaged, even if the MILPAC product is crumpled or folded.
- MILPAC products have improved gas, and in particular water vapor, tightness compared to technical products.
- Table V describes the transmission to water vapor for products according to the state of the art and oroducts according to the invention. Table V.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Vacuum Packaging (AREA)
- Packages (AREA)
- Check Valves (AREA)
Abstract
Description
Claims
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51584295A JPH09509386A (ja) | 1993-12-08 | 1994-12-07 | 包装カバーを不活性化する方法、その装置およびその方法に使用する包装カバー |
| BR9408199A BR9408199A (pt) | 1993-12-08 | 1994-12-07 | Processo para tornar inertes envoltórios de embalagens dispositivo para emprego do processo para tornar inertes envoltórios de embalagens e envoltório de embalagem |
| KR1019960703064A KR960706431A (ko) | 1993-12-08 | 1994-12-07 | 포장 덮개를 비활성시키는 공정과 장치(method for inerting packaging covers, devices therefor, and packaging cover used therein) |
| AU10598/95A AU685883B2 (en) | 1993-12-08 | 1994-12-07 | Method for inerting packaging covers, devices therefor, and packaging cover used therein |
| NZ276347A NZ276347A (en) | 1993-12-08 | 1994-12-07 | Vacuum packaging, extraction of air and injection of inert gas carried out cyclically |
| US08/648,086 US5794408A (en) | 1993-12-08 | 1994-12-07 | Inerting process for packaging covers and devices for carrying out said process |
| EP95901286A EP0733012A1 (fr) | 1993-12-08 | 1994-12-07 | Procede d'inertage de housses d'emballage, dispositifs pour la mise en oeuvre dudit procede, ainsi que housse d'emballage utilisee |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE9301362 | 1993-12-08 | ||
| BE9301362A BE1007847A3 (fr) | 1993-12-08 | 1993-12-08 | Concept d'inertage comprenant un procede, une machine, des complexes souples etanches et des valves pour l'inertage de produits sensibles a l'humidite ou a l'oxygene. |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US08/648,086 A-371-Of-International US5794408A (en) | 1993-12-08 | 1994-12-07 | Inerting process for packaging covers and devices for carrying out said process |
| US09/019,111 Continuation-In-Part US6403176B1 (en) | 1993-12-08 | 1998-02-05 | Packaging laminate for bags |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1995015887A2 true WO1995015887A2 (fr) | 1995-06-15 |
| WO1995015887A3 WO1995015887A3 (fr) | 1995-07-27 |
Family
ID=3887621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/BE1994/000093 Ceased WO1995015887A2 (fr) | 1993-12-08 | 1994-12-07 | Procede d'inertage de housses d'emballage, dispositifs pour la mise en ×uvre dudit procede, ainsi que housse d'emballage utilisee |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US5794408A (fr) |
| EP (1) | EP0733012A1 (fr) |
| JP (1) | JPH09509386A (fr) |
| KR (1) | KR960706431A (fr) |
| AU (2) | AU685883B2 (fr) |
| BE (1) | BE1007847A3 (fr) |
| BR (1) | BR9408199A (fr) |
| CA (1) | CA2177707A1 (fr) |
| IL (1) | IL111934A (fr) |
| NZ (1) | NZ276347A (fr) |
| WO (1) | WO1995015887A2 (fr) |
| ZA (1) | ZA949803B (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999035054A1 (fr) * | 1998-01-05 | 1999-07-15 | Edoardo Moscarelli | Procede et appareil d'entreposage d'equipements, de machines et de vehicules sous atmosphere controlee |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6403176B1 (en) * | 1993-12-08 | 2002-06-11 | Andre Patouraux | Packaging laminate for bags |
| EP1145640A1 (fr) * | 2000-04-10 | 2001-10-17 | Frieder Haaf | Ensemble pour le traitement à gaz et son utilisation pour traiter des produits alimentaires et/ou des plantes |
| US6609354B1 (en) | 2000-09-22 | 2003-08-26 | Grainpro, Inc. | Method for long term storage of a bulk biologically active commodity |
| US6941727B2 (en) * | 2000-11-29 | 2005-09-13 | Grainpro, Inc. | Method and system for transporting and storing commodities |
| JP4511155B2 (ja) * | 2003-11-20 | 2010-07-28 | エア・ウォーター株式会社 | 粉粒状物に対するガス置換方法および装置 |
| ES2246682A1 (es) * | 2004-01-29 | 2006-02-16 | Angel Martin Adrados | Dispositivo de formacion de vacio y/o llenado de gas inerte para bolsas envolventes de mercancias situadas sobre pales. |
| JP4602687B2 (ja) * | 2004-04-15 | 2010-12-22 | エア・ウォーター株式会社 | 粉粒状物に対するガス置換方法 |
| GB2422658A (en) * | 2005-01-31 | 2006-08-02 | Titude Ltd 4 | A method of flushing gas into an out of a sealable enclosure |
| CN1749125A (zh) * | 2005-10-10 | 2006-03-22 | 陈家山 | 充气保护展示框 |
| US7806966B2 (en) * | 2007-12-27 | 2010-10-05 | Bose Ranendra K | Nitrogen inerting system for explosion prevention in aircraft fuel tank and oxygenating system for improving combustion efficiency of aerospace rockets/ aircraft engines |
| CN101497387B (zh) * | 2008-02-02 | 2011-01-12 | 亚泰半导体设备股份有限公司 | 化学桶槽气氛保持装置及其方法 |
| JP2012532284A (ja) | 2009-06-30 | 2012-12-13 | ロイラン ディヴェロップメンツ リミテッド | 感応材料を貯蔵するためのコンテナをパージする装置 |
| KR101331839B1 (ko) * | 2011-11-23 | 2013-11-21 | (주)뉴옵틱스 | 나노 실린더 배큠 박스 |
| US9090392B2 (en) | 2012-08-09 | 2015-07-28 | Signode Industrial Group Llc | Shipping container liner |
| US9676506B2 (en) * | 2012-10-19 | 2017-06-13 | Sunbeam Products, Inc. | Vacuum packaging and sealing appliance with liquid detection |
| FR3003550B1 (fr) * | 2013-03-22 | 2016-05-06 | Sartorius Stedim North America Inc | Installation et procede pour la preparation d'un conteneur charge avec un fluide biopharmaceutique. |
| US20150307217A1 (en) * | 2014-04-23 | 2015-10-29 | Fresh Box LLC | Food preservation system |
| WO2016022792A2 (fr) * | 2014-08-07 | 2016-02-11 | Plank Road Technologies, Llc | Système et procédé permettant de prévenir et de maîtriser la combustion et l'inflammabilité ou l'oxydation de matériaux pendant leur stockage ou leur transport |
| US20160264338A1 (en) * | 2015-03-09 | 2016-09-15 | Gary Dean Growden | Reusable modified atmospheric packaging |
| CN105124987B (zh) * | 2015-09-09 | 2018-07-10 | 郑运婷 | 可拆式文物密封展箱 |
| ITUA20162017A1 (it) * | 2016-03-25 | 2017-09-25 | Pierangelo Vercellino | Contenitore e procedimento per l'imballaggio e la conservazione di materiale deperibile |
| DE102016124017B3 (de) * | 2016-12-12 | 2017-12-28 | Bruker Daltonik Gmbh | Vorrichtung und Verfahren zur Vorbereitung von Proben für die Ionisierung mittels Laserdesorption in einem Massenspektrometer |
| KR101978849B1 (ko) * | 2017-12-11 | 2019-05-15 | 주식회사 싸이노스 | 패킹장치 |
| AU2021306268A1 (en) * | 2020-07-06 | 2023-02-09 | Preservation Systems Inc. | Apparatus, system, and method for modified atmosphere packaging |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3521806A (en) * | 1967-06-14 | 1970-07-28 | Joseph J Esty | Carton |
| DE1901958A1 (de) * | 1969-01-16 | 1970-08-20 | Wilhelm Bader | Ventil |
| FR2218250B1 (fr) * | 1973-02-19 | 1977-02-04 | Bertozzi Albert | |
| SE387916B (sv) * | 1975-01-28 | 1976-09-20 | Aga Ab | Anordning for lagring och transport av temperaturkensligt gods |
| US4055931A (en) * | 1976-07-28 | 1977-11-01 | Furukawa International U.S.A., Inc. | Method and apparatus for providing a controlled atmosphere around perishable products |
| DE2921706A1 (de) * | 1979-05-29 | 1980-12-11 | Laufenberg Josef | Verfahren zum sauerstoffarmen/konservierenden begasen und behandeln von lebensmitteln o.dgl. und vorrichtung zur ausfuehrung des verfahrens |
| US4344467A (en) * | 1980-10-01 | 1982-08-17 | Lahde Frank U | Device for charging containers with an inert gas |
| US5028443A (en) * | 1986-07-17 | 1991-07-02 | Del Monte Fresh Fruit Company | Method for controlling the ripening of fresh produce |
| KR950007612B1 (ko) * | 1987-05-18 | 1995-07-13 | 노오링 스이산쇼오 노오교오 세이부쓰시겐 겐큐쇼 | 과실 및 야채의 저장방법 |
| US4911317A (en) * | 1988-08-19 | 1990-03-27 | Aar Corporation | Controlled environment storage system |
| US5111639A (en) * | 1989-02-15 | 1992-05-12 | Transfresh Corporation | Method and apparatus for bagging product units |
| FR2653407B1 (fr) * | 1989-10-25 | 1992-04-03 | Mathis Alain | Procede de protection d'un objet par deshydratation d'air a circulation forcee et dispositif de deshydratation pour la mise en óoeuvre du procede. |
| US5203138A (en) * | 1990-12-12 | 1993-04-20 | American Air Liquide, Inc. | Method for preserving fresh cut flowers or plant cuttings |
| CH685010A5 (de) * | 1992-05-15 | 1995-02-28 | Inauen Masch Ag | Verfahren zum Verpacken von Gut unter Vakuum und Vakuum-Verpackungsmaschine. |
-
1993
- 1993-12-08 BE BE9301362A patent/BE1007847A3/fr not_active IP Right Cessation
-
1994
- 1994-12-07 CA CA 2177707 patent/CA2177707A1/fr not_active Abandoned
- 1994-12-07 JP JP51584295A patent/JPH09509386A/ja active Pending
- 1994-12-07 BR BR9408199A patent/BR9408199A/pt not_active IP Right Cessation
- 1994-12-07 NZ NZ276347A patent/NZ276347A/en unknown
- 1994-12-07 US US08/648,086 patent/US5794408A/en not_active Expired - Fee Related
- 1994-12-07 KR KR1019960703064A patent/KR960706431A/ko not_active Ceased
- 1994-12-07 AU AU10598/95A patent/AU685883B2/en not_active Ceased
- 1994-12-07 WO PCT/BE1994/000093 patent/WO1995015887A2/fr not_active Ceased
- 1994-12-07 EP EP95901286A patent/EP0733012A1/fr not_active Withdrawn
- 1994-12-08 ZA ZA949803A patent/ZA949803B/xx unknown
- 1994-12-08 IL IL11193494A patent/IL111934A/en not_active IP Right Cessation
-
1998
- 1998-02-23 AU AU56265/98A patent/AU5626598A/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999035054A1 (fr) * | 1998-01-05 | 1999-07-15 | Edoardo Moscarelli | Procede et appareil d'entreposage d'equipements, de machines et de vehicules sous atmosphere controlee |
| AU738090B2 (en) * | 1998-01-05 | 2001-09-06 | Edoardo Moscarelli | Method of and apparatus for the storage of equipments, machines, and vehicles under controlled atmosphere |
Also Published As
| Publication number | Publication date |
|---|---|
| AU685883B2 (en) | 1998-01-29 |
| KR960706431A (ko) | 1996-12-09 |
| US5794408A (en) | 1998-08-18 |
| IL111934A (en) | 1998-10-30 |
| NZ276347A (en) | 1998-05-27 |
| AU5626598A (en) | 1998-05-28 |
| CA2177707A1 (fr) | 1995-06-15 |
| BR9408199A (pt) | 1997-08-26 |
| WO1995015887A3 (fr) | 1995-07-27 |
| IL111934A0 (en) | 1995-03-15 |
| ZA949803B (en) | 1996-05-31 |
| AU1059895A (en) | 1995-06-27 |
| EP0733012A1 (fr) | 1996-09-25 |
| BE1007847A3 (fr) | 1995-11-07 |
| JPH09509386A (ja) | 1997-09-22 |
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