WO2021062381A1 - Systèmes et procédés de test d'intégrité de contenant - Google Patents

Systèmes et procédés de test d'intégrité de contenant Download PDF

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Publication number
WO2021062381A1
WO2021062381A1 PCT/US2020/053111 US2020053111W WO2021062381A1 WO 2021062381 A1 WO2021062381 A1 WO 2021062381A1 US 2020053111 W US2020053111 W US 2020053111W WO 2021062381 A1 WO2021062381 A1 WO 2021062381A1
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WO
WIPO (PCT)
Prior art keywords
container
electrode
spout
contact
conductive
Prior art date
Application number
PCT/US2020/053111
Other languages
English (en)
Inventor
Michael A. Niver
Michael J. Holz
Charles E. Sizer
Original Assignee
Bemis Manufacturing Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bemis Manufacturing Company filed Critical Bemis Manufacturing Company
Publication of WO2021062381A1 publication Critical patent/WO2021062381A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/40—Investigating fluid-tightness of structures by using electric means, e.g. by observing electric discharges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
    • G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • G01M3/186—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for containers, e.g. radiators
    • G01M3/187—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for containers, e.g. radiators for flexible or elastic containers

Definitions

  • the present disclosure relates to closures and spouts for containers and, more particularly, to closures and spouts that facilitate container integrity testing.
  • Food safety regulations such as those promulgated by the United States Food and Drug Administration (e.g., 21 C.F.R. ⁇ 113-114) may require that commercially sterile, low- acid and acidified foods in hermetically sealed containers be periodically tested to verify the integrity of the seals of the container.
  • Current methods for testing plastic, laminated pouch containers typically require that a production sample is taken and destructively tested in a lab. While this may be an acceptable method for small, individual containers, large bag-in-box containers are very difficult and costly to test due to the large size of the bags (e.g., 4-20,000 liters in some cases).
  • the most sensitive method for container integrity testing is a destructive test method called electrolytic testing.
  • the method requires that an electrode be placed into a plastic, laminated container that has been opened, filled with salt water and placed into a bath of salt water.
  • a voltage source applies an electrical current across the plastic membrane of the container. If the container is hermetically sealed, there is zero flow of electric current. If the container has a leak, there is a current flow, which indicates a microbiological risk.
  • the present disclosure provides, in one aspect, a container defining an internal volume configured to receive an electrically-conductive product.
  • the container includes a wall including an inner layer, an outer layer, and an intermediate layer between the inner layer and the outer layer.
  • the inner layer is made of an electrically -insulating material
  • the intermediate layer is made of an electrically-conductive material.
  • a spout is coupled to the wall and has a passage in communication with the internal volume.
  • a closure is coupled to the spout to seal the passage.
  • the container includes a first electrode extending through the closure or the spout such that an end of the first electrode is positioned within the internal volume to contact the product, and a piercing member configured to puncture the outer layer of the wall to contact the intermediate layer.
  • the present disclosure provides, in another aspect, a testing system for testing the integrity of a container defining an internal volume configured to receive an electrically- conductive product, the container including a wall with an intermediate layer made of an electrically-conductive material, a spout coupled to the wall, the spout having a passage in communication with the internal volume, and a closure coupled to the spout to seal the passage.
  • the system includes a first electrode extending through the spout such that the first electrode is configured to contact the conductive product and a testing device removably coupled to the spout.
  • the testing device includes a first contact configured to form an electrical connection with the first electrode when the testing device is coupled to the spout.
  • the testing system also includes a second contact removably coupled to the container to form an electrical connection with the intermediate layer of the container and a control unit electrically connected to the first contact and the second contact.
  • the control unit is configured to apply a potential difference across the first contact and the second contact and measure a current flowing between the first contact and the second contact.
  • the control unit is configured to compare the measured current with a predetermined threshold to determine whether a leak is present in the container.
  • FIG. 1 is a side schematic view of a multi-layer container having a closure hermetically sealed to the container.
  • FIG. 2A is a side view of a closure having an electrode extending at least partially through the closure.
  • FIG. 2B illustrates the closure of FIG. 2A for coupling to a spout of a container.
  • FIG. 3 is top view of the closure of FIG. 2A.
  • FIG. 4 is schematic view illustrating an exemplary system for detecting a leak from a container using the closure of FIG. 2A.
  • FIG. 5 is a schematic cross-sectional view illustrating an alternative construction of a closure having a conductive layer, a sealing layer, an access aperture to access the conductive layer, and a plug with an electrode in contact with conductive products within a container.
  • FIG. 6 is a schematic cross-sectional view illustrating an alternative construction a closure having a conductive layer, an insulating seal, a compression fitting, a first electrode in contact with conductive products within a container, and a second electrode in contact with the conductive layer.
  • FIG. 7 is a schematic cross-sectional view illustrating an alternative construction a closure having a conductive layer, an insulating layer, a compression seal, a plug having a first electrode in contact with conductive products within a container, and a second electrode in contact with the conductive layer.
  • FIG. 8 is a schematic cross-sectional view illustrating an alternative construction of a closure having a first electrode in contact with conductive products within a container and a second electrode formed as a conductive ring that positioned between a spout of the container and the closure.
  • FIG. 9 is schematic view illustrating an exemplary system for detecting a leak from the container using the closure of FIG. 8.
  • FIG. 10 is a cross-sectional view illustrating an alternative construction of closure having body housing an outer electrode, an insulating ring positioned within the outer electrode, and an inner electrode positioned within the insulating ring.
  • FIG. 11 is top view of the closure of FIG. 10.
  • FIG. 12 is a cross-sectional view of an alternative construction of a closure having body housing a first electrode and a second electrode.
  • FIG. 13 is top view of the closure of FIG. 12.
  • FIG. 14 illustrates an exemplary system for performing a measurement using the closure of FIG. 12.
  • FIG. 15 is a schematic cross-sectional view illustrating an alternative construction of a closure having a conductive layer, an insulating layer, a plug, an access aperture, and a second electrode housed within the access aperture and in contact with the conductive layer.
  • FIG. 16 is schematic cross-sectional view illustrating an exemplary system for detecting a leak from the container using the closure of FIG. 15.
  • FIG. 17 illustrates an exemplary system for testing a container in an immersion bath.
  • FIG. 18 is a graph illustrating the electrical conductivity of an exemplary food product.
  • FIG. 19 is a bottom perspective view of a spout of a container.
  • FIG. 20 is a top perspective view of the spout of FIG. 19.
  • FIG. 21 is a schematic side view of the spout of FIG. 19.
  • FIG. 22 is a bottom perspective view of a testing device configured to interface with the spout of FIG. 19.
  • FIG. 23 is a top perspective view of the testing device of FIG. 22
  • FIG. 24 is a top perspective view of the spout of FIG. 19 and the testing device of
  • FIG. 25 is a schematic view of a testing system including the spout of FIG. 19 and the testing device of FIG. 22.
  • FIG. 26 is a schematic side view illustrating the testing system of FIG. 25 in use.
  • FIG. 27 is a schematic representation illustrating a plurality of layers of an exemplary container.
  • FIG. 28 illustrates a system for testing the integrity of the container of FIG. 27.
  • FIG. 29 illustrates the system of FIG. 28, with a leak present in a wall of the container.
  • functionality described herein as being performed by one component may be performed by multiple components in a distributed manner. Likewise, functionality performed by multiple components may be consolidated and performed by a single component. Similarly, a component described as performing particular functionality may also perform additional functionality not described herein. For example, a device or structure that is “configured” in a certain way is configured in at least that way but may also be configured in ways that are not listed.
  • FIG. 1 illustrates a closure 10 operably coupled to a spout 12 of a container 14.
  • the container 14 is a flexible bag for use as a bag-in-the-box type container.
  • the container 14 may be any other type of container capable of holding liquid or semi-solid contents.
  • the container 14 defines an internal volume 18.
  • the internal volume 18 of the container 14 may have a capacity in a range of four liters to 20,000 liters.
  • the container 14 is configured to receive and store liquid or semi-solid products (e.g., food/beverage products such as juice, soda, tomato paste, etc.), while maintaining a sterile environment within the internal volume 18.
  • liquid or semi-solid products e.g., food/beverage products such as juice, soda, tomato paste, etc.
  • the spout 12 defines a passage that communicates with the internal volume 18 of the container 14, and the closure 10 seals the passage when the product is stored within the container 14.
  • the closure 10 is separable from the spout 12 to allow the product to be dispensed from the container 14.
  • the container 14 may be formed as a multi layer wall container.
  • the container 14 may include a first layer 20 or inner layer formed of an electrically-insulating material (e.g., a non-conductive plastic material such as polypropylene, polyethylene, or the like).
  • the first layer 20 is in contact with the conductive product positioned within the internal volume 18 of the container 14.
  • the container 14 may further include a second layer or intermediate layer 22 formed of a conductive material (e.g., a metal foil such as aluminum or a metalized film such as metalized polyethylene terephthalate) and a third layer or outer layer 24 made of an electrically-insulating material.
  • the second layer 22 is sandwiched between the first layer 20 and the third layer 24.
  • the container 14 may be formed with other combinations and arrangements of conductive and insulating layers.
  • the closure 10 includes a plug 26 fixed to a surrounding wall of the closure 10 by any suitable method (e.g., welding, adhesive, or the like).
  • the closure 10 and the plug 26 may be integrally formed together as a single structure.
  • the plug 26 includes a body 30 formed of an electrically-insulating material and an electrode 34 extending axially through the body 30.
  • the electrode 34 is formed of a conductive material and preferably a food-safe conductive material, such as an inert reference stainless steel material.
  • the electrode 34 includes an exposed contact surface 38 accessible from outside the plug 26. In some embodiments, the exposed surface 38 of the electrode 34 may be surface oxidized to inhibit corrosion of the electrode 34 and thereby inhibit contamination of the conductive products within the container 14.
  • the electrode 34 is hermetically sealed into the plug 26 (e.g., by press-fitting, molding the plug 26 around the electrode 34, or by any other suitable arrangement) to prevent the ingress of either gasses or microorganisms into the container 14.
  • the electrode 34 extends at least partially into the container 14 such that the electrode 34 may contact the conductive product positioned within the internal volume 18.
  • a hermetic seal is formed at an interface 40 between the spout 12, the closure 10, and/or the plug 26.
  • the interface 40 include a conductive layer or coating in electrically conductive contact with the second layer 22 of the container 10.
  • FIG. 4 illustrates an exemplary system 42 for detecting a leak from the container 14.
  • the container 14 may be coupled to an electrical circuit to detect if leaks are present in the container 14 or in the hermetic seal at the interface 40 between the closure 10 and the spout 12.
  • the illustrated system 42 includes a volt-ohm-meter (VOM) 46, a voltage source or battery 50 (e.g., a 9-volt battery, a DC power source/converter, or the like), and a piercing member 58.
  • a first connecting wire 54a operably couples the VOM 46 to the electrode 34 via the exposed surface 38.
  • a second connecting wire 54b operably couples the VOM 46 to a one terminal (e.g., the negative terminal) of the battery 50.
  • a third connecting wire 54c operably couples the other terminal (e.g., the positive terminal) of the battery 50 to the second layer 22 of the container 14 via the piercing member 58.
  • the piercing member 58 is an alligator clamp that may pierce the third layer 24 of the container 14 (preferably at a location outboard of a weld/seam of the container 14 so as not to cause a leak in the container 14) to come into electrical contact with the conductive second layer 22.
  • the third connecting wire 54c may be electrically coupled to the second layer 22 in any other suitable manner. For example, a portion of the second layer 22 may be exposed at an edge of the container 14.
  • the battery 50 provides an electrical potential difference between the electrode 34 and the second layer 22 of the container 14.
  • the first layer 20 of the container 14 provides an insulating layer so that electrical circuit 42 is incomplete.
  • the first layer 20 electrically isolates the electrode 34 from the second layer 22.
  • the VOM 46 does not detect a current flow from the battery 50 (or detects a current flow below a predetermined threshold).
  • the electrical circuit is completed.
  • the VOM 46 detects a current flow greater than the predetermined threshold.
  • the first layer 20 may have a hole or leak that exposes the conductive products within the internal volume 18 to the second layer 22 (e.g., the conductive layer).
  • current may flow through the electrode 34, the conductive product within the internal volume 18, and the second layer 22 to complete the circuit 42.
  • any conductive product is trapped between the plug 26 and the spout 12 and compromises the hermetic seal 40, a conductive path between the electrode 34 and a second layer 22 of the container 14 is formed. The conductive path completes the electrical circuit so that the VOM 46 detects a current flow.
  • the current flow that indicates a leak may vary.
  • each application may have a predetermined threshold that is greater than zero milliamps.
  • the VOM 46 detects a current greater than the predetermined threshold, an operator may determine that a leak is present.
  • FIG. 5 illustrates an alternative construction of a closure 110.
  • the closure 110 is similar to the closure 10 described above with reference to FIGS. 1-4, and the following description focuses primarily on differences between the closure 110 and the closure 10.
  • common features and elements of the closure 110 corresponding with features and elements of the closure 10 are given common reference numbers plus 100.
  • the closure 110 is coupled to a spout 112 of a container 114 to seal the container 114.
  • the closure 110 receives a plug 126 having an electrode 134 that extends through a body 130 of the plug 126 and contacts the conductive product within the container 114.
  • the electrode 134 includes an exposed surface 138 that may be coupled to a testing system (such as the system 42 described above).
  • the closure 110 includes a conductive layer 122 positioned adjacent to an upper portion of the closure 110 and a sealing layer 124 positioned adjacent the conductive layer 122.
  • the sealing layer 124 is in contact with the conductive product within the internal volume 118 and prevents the conductive product from contacting the conductive layer 122.
  • the sealing layer 124 provides electrical insulation to the closure 110 by not allowing the conductive product to come into contact with the conductive layer 122
  • the closure 110 further includes an access aperture 128 that allows access to the conductive layer 122.
  • a second electrode (not shown) may be positioned in the access aperture 128.
  • a leak in the closure 110 can be detected by forming an electrical circuit, similar to that illustrated in FIG. 4, by connecting the first wire 54a to the electrode 134 and the third wire 54c to the conductive layer 122.
  • the conductive layer 122 in the closure 110 may be in electrical communication with a conductive layer of the container 114 such that a leak in the wall of the container 114 can also be detected.
  • FIG. 6 illustrates an alternative construction of a closure 210.
  • the closure 210 is similar to the closure 10 described above with reference to FIGS. 1-4, and the following description focuses primarily on differences between the closure 210 and the closure 10.
  • common features and elements of the closure 210 corresponding with features and elements of the closure 10 are given common reference numbers plus 200.
  • the closure 210 includes an insulating seal 224 that is contact with the conductive product within a container 214 and a conductive layer 222 positioned between the insulating seal 224 and an upper portion of the closure 226.
  • a compression fitting 230 is positioned around the inner circumference of the closure 210 to form a hermetic seal with the spout 212.
  • the hermetic seal of the closure 210 can be accomplished by the pressure supplied by threads, the compression fitting 230, or thermally sealing of the closure 210.
  • a first electrode 234 extends through an outer surface of the closure 210, the conductive layer 222, and the insulating seal 224 so the first electrode 234 is in contact with the conductive product positioned within the container 214.
  • the first electrode 234 is insulated from electrical contact with the conductive layer 222.
  • the first electrode 234 may include an insulating coating or sheath, or the conductive layer 222 may include an opening that is larger in diameter than the first electrode 234.
  • a second electrode 236 extends through the upper portion of the closure 210 so the second electrode 236 is in contact with the conductive layer 222.
  • a leak in the closure 210 can therefore be detected by connecting a similar electrical circuit as shown in FIG. 4 to the first electrode 234 and the second electrode 236. If a leak occurs in the compression fitting 230 or the insulating seal 224, the conductive product contacts the conductive layer 222, which completes the electrical circuit.
  • the conductive layer 222 in the closure 210 may be in electrical communication with a conductive layer of the container 214 such that a leak in the wall of the container 214 can also be detected.
  • FIG. 7 illustrates an alternative construction of a closure 310.
  • the closure 310 is similar to the closure 10 described above with reference to FIGS. 1-4, and the following description focuses primarily on differences between the closure 310 and the closure 10.
  • common features and elements of the closure 310 corresponding with features and elements of the closure 10 are given common reference numbers plus 300.
  • the closure 310 is attached to a spout 312 of the container 314.
  • the closure 310 includes a conductive layer 322 positioned adjacent an upper portion of the closure 310 and an insulating layer 324 positioned adjacent the conductive layer 322.
  • the closure 310 is configured to form a compression seal 330 between the insulating layer 324 and the spout 312 of the container 314.
  • a first electrode 334 is accommodated in a plug 326 that is inserted into the body of the closure 310.
  • the plug 326 insulates the first electrode 334 from the conductive layer 322, and the first electrode 334 extends through the closure 310 and into contact with the conductive product positioned within the container 314.
  • a second electrode 336 extends through the upper portion of the closure 310 so the second electrode 336 is in contact with the conductive layer 322.
  • a leak in the closure 310 can be detected by connecting a similar electrical circuit as shown in FIG. 4 to the first electrode 334 and the second electrode 336. If there is a leak in or product blocks the compression seal 330, a channel 338 may be formed in the compression seal 330. As a result, the conductive product contacts the conductive layer 322, which completes the electrical circuit.
  • the conductive layer 322 in the closure 310 may be in electrical communication with a conductive layer of the container 314 such that a leak in the wall of the container 314 can also be detected.
  • FIG. 8 illustrates an alternative construction of a closure 410.
  • the closure 410 is similar to the closure 10 described above with reference to FIGS. 1-4, and the following description focuses primarily on differences between the closure 410 and the closure 10.
  • common features and elements of the closure 410 corresponding with features and elements of the closure 10 are given common reference numbers plus 400.
  • the closure 410 is at least partially inserted into a spout 412 of a container 414, forming a seal.
  • the closure 410 may be threaded onto the spout 412 or pressure fit within the spout 412.
  • a first electrode 434 extends through the closure 410 so that the first electrode 434 is in contact with the conductive product positioned within the container 414.
  • FIG. 9 illustrates an exemplary system 442 for detecting a leak from the closure 410.
  • the system 442 includes a VOM 446, a voltage source or battery 450, and connecting wires (454a, 454b, 454c).
  • the first connecting wire 454a operably couples to the VOM 446 to the first electrode 434 via an exposed surface 438 of the first electrode 434.
  • the second connecting wire 454b operably couples the VOM 446 to a first terminal of the battery 450.
  • the third connecting wire 454c operably couples a second terminal of the battery 450 to a contact point 456 on the conductive ring 422. In the illustrated embodiment, the contact point 456 is accessible from the exterior of the closure 410.
  • the electrical circuit 442 allows for the integrity of the seal between the spout 412 and the closure 410 to be tested for leaks. If a leak occurs, the conductive product may contact the conductive ring 422 and complete the electrical circuit 442 between the first electrode 434 and the conductive ring 422. In some embodiments, the conductive ring 422 may be in electrical communication with a conductive layer of the container 414 such that a leak in the wall of the container 414 can also be detected.
  • FIGS. 10-13 illustrate embodiments of plugs for closures that have a plurality of electrodes integrated into the plug.
  • Closures with a plurality of electrodes allow for redox potential of the conductive material within the container to measured. Changes in the redox potential may indicate whether spoilage (e.g., oxidative, microbiological changes, etc.) of the product has occurred.
  • closures having a plurality of electrodes may allow for non destructive test methods to be performed before products are shipped from a facility or when products are received at a facility.
  • a plurality of sensors may be used in conjunction with the closure to enable different measurements related to the conductive product within the container.
  • FIGS. 10 and 11 illustrate a plug 526 including a body 530 having an outer electrode 540, an insulating ring 524 (e.g., formed of polypropylene or any other suitable food-safe electrically -insulating material) positioned within the outer electrode 540, and an inner electrode 534 positioned within the insulating ring 524.
  • the inner electrode 534, the insulating ring 524, and the outer electrode 540 each have a cylindrical bodies, and the electrodes 534, 540 and the insulating ring 524 are concentrically arranged.
  • the plug 526 may be incorporated into a closure, or the plug 526 itself may be a closure configured to mate with a spout of a container.
  • the inner electrode 534 is a reference or first electrode that extends at least partially through the body and contacts the conductive productive within the container 514.
  • the outer electrode 540 is an additional electrode that extends at least partially through the body and contacts the conductive productive within the container 514.
  • the insulating ring 524 forms a barrier between the inner and outer electrodes 534.
  • the inner and outer electrodes 534, 540 are not electrically connected unless both the inner and outer electrodes 534, 540 are in contact with the conductive product within the container.
  • the concentric inner and outer electrodes 534, 540 may form a probe for measuring the flow of electricity between the inner electrode 534 and the outer electrode 540.
  • a plurality of sensors may be used in conjunction with the plug 526 to enable different measurements related to the conductive product within the container.
  • FIG. 12 and 13 illustrate an alternative construction of a plug 626 similar to the plug 526 described above with reference to FIGS. 10 and 11, and the following description focuses primarily on differences between the plug 626 and the plug 526.
  • common features and elements of the plug 626 corresponding with features and elements of the plug 526 are given common reference numbers plus 100.
  • the plug 626 includes a body 630 having a first electrode 634 positioned in a central location of the closure 626 and a second electrode 640 positioned on a portion of the body 630 offset in a radial direction from the first electrode 634.
  • the first electrode 634 and the second electrode 640 each extend through the body 630 to contact the conductive product within an associated container.
  • the body 630 is made of an electrically-insulating material and forms an insulating barrier between the first and second electrodes 634, 640.
  • the first and second electrodes 634, 640 are not electrically connected unless both of the first and second electrodes 634, 640 are in contact with the conductive product within the container.
  • FIG. 14 illustrates an exemplary system 642 for performing a measurement such as the redox potential using the plug 626, which, in the illustrated embodiment, is incorporated into the center portion of a closure 610.
  • a volt-ohm-meter (VOM) 646 is operably coupled to the first and second electrodes 634, 640 via first and second connecting wires 654a, 654b. Since the first and second electrodes 634, 640 are both in contact with a conductive product positioned within an internal volume 618 of the container 614, an electrical circuit formed between the first and additional electrode 634, 640. As a result, the VOM 646 may measure the redox potential of the conductive material. While the method is described in terms of the plug 626, the plug 526 may alternatively be used to perform the measurement.
  • FIG. 15 and 16 illustrate an alternative construction of a closure 710 including a plug 726, which may be similar to the plug 626.
  • the closure 710 is coupled to a spout 712 of a container 714.
  • the plug 726 is coupled to the closure 710.
  • the closure 710 includes an insulating layer 724 that is contact with the conductive product within a container 714 and a conductive layer 722 positioned between the insulating layer 724 and an outer structure of the closure 710.
  • the closure 710 includes an access aperture 728 that allows access to the conductive layer 722.
  • the access aperture 728 houses a third electrode 736 that contacts the conductive layer 722.
  • FIG. 16 illustrates an exemplary system 742 for testing the closure 710 and container 714 for integrity and/or for measuring the redox potential of the material in the container 714.
  • an electrical circuit includes the volt-ohm-meter (VOM) 746, a voltage source or battery 750 (e.g., a 9-volt battery), and connecting wires (754a, 754b, 754c).
  • VOM volt-ohm-meter
  • a first connecting wire 754a operably couples to the VOM 746 to the first electrode 734.
  • a second connecting wire 754b operably couples the VOM 746 to a first terminal of the battery 750.
  • a third connecting wire 754c operably couples a second terminal of the battery 750 to the third electrode 736 to provide a current flow to the container 714. If there is a leak in the closure 710 or the container 714 the conductive product contacts the conductive layer 722, which completes the electrical circuit.
  • the second connecting cable 754b may alternatively be connected to the second 740 instead of the battery 750, in a manner similar to the configuration illustrated in FIG. 13. As a result, the redox potential of the conductive material may be measured.
  • FIG. 17 illustrates an exemplary system 842 for testing a container 814 in an immersion bath 812.
  • the immersion bath 812 includes a volume 816 filled with conductive fluid (e.g., salt water 820 or any other electrolyte-containing conductive fluid).
  • conductive fluid e.g., salt water 820 or any other electrolyte-containing conductive fluid.
  • the conductive fluid 820 may have a salt concentration of about one percent by volume.
  • a closure 810 is coupled to the container 814, such as any of the closures and containers described and illustrated herein.
  • the container 814 is immersed in the bath 816 containing the conductive fluid 820.
  • a first connecting wire 854a operably coupled to a VOM 846 is in contact with the fluid 820.
  • a second connecting wire 854b operably couples the VOM 846 to the battery 850, and a third connecting wire 854c operably couples the battery 850 to an electrode 834 within the closure 810. If a leak is present in the container 814, current will flow through the electrode 834, the conductive product, and the conductive fluid 820 to complete the electrical circuit 842.
  • FIG. 18 is a graph illustrating the electrical conductivity of an exemplary food product (e.g., pumpkin) that may be held in a container of the present disclosure.
  • An ohm meter was used to measure the resistance of a defined cross section and length of the product.
  • the conductivity of the product determines its ability for electricity to flow through the product and thus may affect the sensitivity of the test methods described and illustrated herein.
  • the inventor has found, however, that the sensitivity of the test methods may be readily adjusted by adding small amounts of electrolytes, such as sodium chloride and/or potassium chloride, to the product to increase its conductivity. It was determined that a level of 0.5% sodium chloride increases the detectability of the product and yet does not appreciably affect taste.
  • closures and test methods described herein may be useful in connection with a wide variety of products that may not otherwise be sufficiently electrically conductive for testing.
  • FIGS. 19-21 illustrate a spout 912 according to an embodiment of the present disclosure.
  • the spout 912 is coupled to a container 914, which may be a multi-layer container having a conductive foil layer, such as the container 14 described above with reference to FIG. 1.
  • the container 914 is configured to receive and store a conductive product.
  • the spout 912 includes a body 916 defining an opening 920 to receive or dispense the conductive product from the container 914 (FIG. 19).
  • the spout 912 includes a spout electrode assembly, which in the illustrated embodiment includes a first electrode 934 and a second electrode 940 extending through the body 916 of the spout 912 proximate an outer periphery of the spout 912.
  • each of the electrodes 934, 940 extends through a portion of the spout 912 such that a first end is positioned outside the container 914 and a second end is positioned within the container 914. The second end of each electrode 934, 940 may thus contact the conductive product within the container 914.
  • the first and second electrodes 934, 940 are preferably made of different materials.
  • the first electrode 934 may be made of stainless steel, and the second electrode 940 may be made of titanium or a titanium alloy.
  • the illustrated spout electrode assembly may allow for measuring the pH, oxidation reduction potential (“REDOX”), or other properties of the conductive product within the container 914.
  • including multiple electrodes 934, 940 may increase reliability of contact between the electrodes 934, 940 and the conductive product.
  • the spout electrode assembly may include a single electrode, or the spout electrode assembly may include more than two electrodes.
  • the electrodes 934, 940 may be press fit into corresponding bores formed in the spout 912. In other embodiments, the electrodes 934, 940 may be insert molded within the spout 912 (i.e. the spout 912 may be molded around the electrodes 934, 940). In either case, the body 916 of the spout 912 forms a fluid-tight seal around the electrodes 934, 940. In other embodiments, the electrodes 934, 940 may be coupled to the spout 912 in other ways suitable for providing a fluid-tight seal around the electrodes 934, 940.
  • a ledge 944 is formed on the spout 912 and circumferentially about the spout 912.
  • the ledge 944 includes an alignment feature in the form of a key way 946 positioned proximate the first and second electrodes 934, 940.
  • the key way 946 may be positioned generally between the first and second electrodes 934, 940.
  • the keyway 946 may facilitate aligning and coupling a testing device to the spout 912 such that the testing device may interface with the electrodes.
  • a first seal 910 is coupled to the spout 912 to seal the container 914.
  • the first seal 910 may be integrally formed with the spout 912.
  • the first seal 910 may be welded or adhered to the spout 912 in various ways.
  • the first seal 910 may seal the spout 912 to maintain a sterile environment within the container 914 prior to the container 914 being filled.
  • the first seal 910 may be removed or breached.
  • a hole 950 is formed in the first seal 910 so that the conductive product can enter the container 914 through the hole 950.
  • the container 914 may be resealed by attaching a second seal or closure 956 to the spout 912.
  • the second seal 956 is configured as a metal foil laminate cap that is heat-sealed or welded to a top lip 960 of the spout 912.
  • FIG. 21 illustrates a schematic view of the spout 912 with the closure 956 attached.
  • the closure 956 covers and seals the hole 950 formed in first seal 910 during filling of the container 914. That is, the closure 956 may be attached to the spout 912 after filling the container 914.
  • the closure 956 includes an inner insulating layer 964, a conductive layer 968, and an optional outer insulating layer 972.
  • the inner insulating layer 964 electrically insulates the conductive layer 968 of the closure 956 from the conductive product within the container 914.
  • the optional outer insulating layer 972 may insulate the conductive layer 968 from the surrounding environment and/or increase the durability of the closure 956.
  • FIGS. 22-25 illustrate a testing device 976 that may be removably coupled to the spout 912.
  • the testing device 976 includes a main body 978 and a pair of arms 980 that are pivotable relative to the main body 978.
  • the arms 980 each include a first end portion 984 having a curved shape and a second end portion 988 engaged with a respective biasing member or spring 992 (FIG. 22).
  • the first end portions 984 are configured to engage and clamp the spout 912 therebetween.
  • the biasing members 992 bias the arms 980 toward a closed position and apply a clamping force on the spout 912 to secure the testing device 976 to the spout 912.
  • the arms 980 provide a connection mechanism to allow a user to selectively couple the testing device 976 to the spout 912 and, in some embodiments, to other spouts having a range of diameters or sizes. While the connection mechanism is illustrated as pivoting arms 980, it should be appreciated that other connection devices or mechanisms may be used to secure the testing device 976 to the spout 912 or the container 914.
  • the main body 978 of the spout testing device 976 includes a first or bottom side (FIG. 22) and a second or top side (FIGS. 23 and 24).
  • a first contact assembly 996 coupled to the main body 978 adjacent the first side is positioned and arranged to engage with the first and second electrodes 934, 940 of the spout 912.
  • a second contact assembly 998 (FIGS. 23 and 24) is coupled to the main body 978 adjacent the second side.
  • the second contact assembly 998 is positioned and arranged to engage with an outer periphery of the closure 956.
  • one of the contact assemblies 996, 998 such that the spout testing device 976 may include only a single contact assembly.
  • the first and second contact assemblies 996, 998 are electrically connected to an electronic test control unit 1000 via electrical wires 1002.
  • the illustrated control unit 1000 includes a power source 1004, a measuring device 1006, and a control system 1007.
  • the power source 1004 may include a DC power source, such as a battery or an AC to DC converter configured to output DC power from an AC power source, such as a wall outlet.
  • the power source 1004 has a nominal output voltage of about 9 Volts.
  • the power source 1004 may be a 9-Volt alkaline or rechargeable battery.
  • the control system 1007 includes a plurality of electrical and electronic components that provide power, operational control, and protection to the components and modules within the control unit 1000.
  • the control system 1007 may include an electronic processor (e.g., a programmable microprocessor, microcontroller, or similar device), non-transitory, machine-readable memory, and an input/output interface.
  • the input/output interface may be coupled to the contact assemblies 996, 998, for example, to send/receive electrical signals to/from the testing device 976.
  • Software included in the implementation of the control unit 1000 can be stored in the memory of the control system 1007.
  • the software may include, for example, firmware, one or more application, program data, filters, rules, one or more program modules, and other executable instructions.
  • the control system 1007 is configured to retrieve from memory and execute, among other things, instructions related to the control processes and methods described herein. In other embodiments, the control system 1007 may include additional, fewer, or different components.
  • the first contact assembly 996 includes a first contact 1008 and a second contact 1012 spaced from the first contact 1008.
  • the first and second contacts 1008, 1012 respectively contact the first electrode 934 and the second electrode 940 of the spout 912 when the device 976 is coupled to the spout 912 (e.g., as illustrated in FIG. 25).
  • the engagement of the first and second contacts 1008, 1012 and the electrodes 934, 940 forms an electrical connection between each of the first and second electrodes 934, 940 and the control unit 1000.
  • the first and second contacts 1008, 1012 are generally L-shaped structures, with a first end coupled to the main body 978 of the device 976 and a second end that is able to flex relative to the main body 978 to promote engagement between the contacts 1008, 1012 and the electrodes 934, 940.
  • the first and second contacts 1008, 1012 may be configured and arranged in other ways suitable for coming into contact with the electrodes 934, 940 on the spout 912.
  • the first side of the main body 978 further includes a protrusion 1016, which, in the illustrated embodiment, is positioned between the first and second contacts 1008, 1012.
  • the illustrated protrusion 1016 has a generally rectangular cross-section and is sized to be received within the key way 946 (FIG. 20) on the ledge 944 of the spout 912.
  • the protrusion 1016 is received in the key way 946 when the first and second contacts 1008, 1012 are aligned with the first and second electrodes 934, 940.
  • the protrusion 1016 and the key way 946 facilitate proper alignment and engagement of the first and second contacts 1008, 1012 with the first and second electrodes 934, 940.
  • the second contact assembly 998 is coupled to the second side of the main body 978 and is electrically connected to the electronic test control unit 1000 via the set of electrical wires 1002.
  • the second contact assembly 998 includes a first contact portion 1024 and a second contact portion 1028 spaced from the first contact portion 1024.
  • the first and second contacts portions 1024, 1028 are configured to engage with the closure 956 (FIG. 21) when the device 976 is coupled to the spout 912.
  • the first and second contact portions 1024, 1028 are configured engage the outer periphery of the closure 956 where the conductive layer 968 is exposed (FIG. 21) so as to form an electrical connection between the conductive layer 968 of the closure 956 and the control unit 1000.
  • the first and second contact portions 1024, 1028 are generally arc-shaped and have a first end coupled to the main body 978 of the device 976 and a second end that is able to flex relative to the main body 978 to promote engagement between the first and second contacts portion 1024, 1028 and the closure 956. It should be appreciated that the first and second contact portions 1024, 1028 may have an alternate geometry or may be connected to a different portion of the device 976.
  • FIGS. 25 and 26 illustrate a testing system 1050 including the spout 912, the testing device 976, and the electronic control unit 100.
  • the testing device 976 is first coupled to the spout 912 of the container 914 by pivoting the arms 980 toward an open position against the biasing forces of the springs 992 (FIG. 22) and aligning the protrusion 1016 with the key way 946 on the ledge 944 of the spout 912 (FIG. 24).
  • the arms 980 are then positioned around the spout 912, and the second end portions 988 of the arms 980 are released, allowing the arms 980 to pivot toward a closed position under the influence of the springs 992 and clamp the spout 912 between the first end portions 984 of the arms 980.
  • the arms 980 thus retain the testing device 976 in position on the spout 912, as illustrated in FIG. 25.
  • the first and second contacts 1008, 1012 of the first contact assembly 996 engage with the first and second electrodes 934, 940 of the spout 912.
  • the first and second contact portions 1024, 1028 of the second contact assembly 998 engage with the conductive layer 968 of the closure 956.
  • An additional electrical wire 1054 extends from the control unit 1000 and is removably coupled to the container 914 via an electrical contact 1055.
  • the electrical contact 1055 includes a piercing member, such as an alligator clamp with teeth configured to pierce an outer seam (e.g., a heat-sealed seam) of the container 914 to make electrical contact with a foil layer of the container 914. By piercing only the outer seam of the container 914, the integrity of the container 914 is unaffected.
  • the electrical contact 1055 may be connected to the foil layer of the container 914 in other ways. For example, a portion of the foil layer of the container 914 may be exposed to provide a location to connect the electrical contact 1055.
  • the control unit 1000 is operable in a first testing mode to test the integrity of the container 914, a second testing mode to test the integrity of the closure 956, and a third testing mode to test the product within the container (e.g., for spoilage, the presence of contaminants, or the like).
  • a user may initiate and/or switch between the testing modes using a button, switch, or other interface on the control unit 1000, or a button, switch or other interface on an external device.
  • the control unit 1000 may omit one or more of the test modes, and the control unit 1000 may also include other test modes in other embodiments.
  • the control unit 1000 may include a signal or a display unit that alerts the user that a leak is present in the closure 956 or the container 914.
  • the power source 1004 of the control unit 1000 applies a voltage differential between the first contact assembly 996 and the contact 1055 coupled to the container 914. If a leak occurs in the wall of the container 914, the conductive product comes into contact with the foil layer of the container 914 and completes an electrical circuit between the electrodes 934, 940 and the contact 1055.
  • the measuring device 1006 may be configured to measure current flow, and the control system 1007 may determine the presence of a leak if the measured current flow is greater than a stored threshold value. In other embodiments, the first testing mode may use other electrical measurements to determine the integrity of the container 914.
  • the power source 1004 of the control unit 1000 applies a voltage differential between the second contact assembly 998 and the contact 1055 coupled to the container 914. If a leak occurs along the edge of the closure 956, the conductive product comes into contact with the foil layer 968 of the closure 956 and completes an electrical circuit between the contact portions 1024, 1028 and the contact 1055.
  • the control system 1007 may measure current flow via the measuring device 1006 and compare the measured current flow with a stored threshold value to determine the integrity of the closure 956. In other embodiments, the second testing mode may use other electrical measurements to determine the integrity of the closure 956.
  • the power source 1004 of the control unit 1000 applies a voltage differential between the two electrodes 934, 940 (via the first contact assembly 996). Since the first and second electrodes 934, 940 are submerged in the conductive product within the container 914, the conductivity of the material may be monitored without the presence of a leak. As a result, the control unit 1000 is able to provide additional feedback about the quality or state of conductive product within the container 914. For example, the user may be able to input or select a type of the conductive product (e.g., apple juice, orange juice, etc.) that is within the container into the control system 1007 of the control unit 1000. The control system 1007 may be preprogrammed with the conductivity properties of the selected material.
  • a type of the conductive product e.g., apple juice, orange juice, etc.
  • the control system 1007 may allow for measuring the pH, oxidation reduction potential (“REDOX”), or other properties of the conductive product within the container 914. Therefore, once the testing device 976 is connected to the spout 912 of the container, the control unit 1000 may alert the user that the conductive product is spoiled or not. [0097]
  • the control unit 1000 may also be operable in a diagnostic testing mode, which may additionally or alternatively be part the first testing mode, the second testing mode, and/or the third testing mode. In the diagnostic testing mode, the control unit 1000 is operable to test whether the testing device 976 is properly coupled to the spout 914.
  • control unit 1000 may be integrated within the testing device 976 (e.g., housed within the main body 978) or as a separate structure from the testing device 976. Additionally, the testing device 976 may communicate with the control unit 1000 through a wired connection or a wireless communication network (e.g., Bluetooth, WiFi, etc.).
  • a wireless communication network e.g., Bluetooth, WiFi, etc.
  • FIG. 27 illustrates a layer assembly 2004 that may form walls of a container.
  • the illustrated layer assembly 2004 includes an inner layer 2020, a plurality of intermediate layers 2022a-c, and an outer layer 2024. Although the respective layers of the layer assembly 2004 are shown spaced apart in FIG. 27, this is for the purpose of illustration, and the layer assembly 2004 is preferably laminated together during manufacturing to form a sheet of material.
  • a second, identical sheet of material can then be placed adjacent the first sheet of material and welded or otherwise bonded around a perimeter of the material to form the walls of a container, such as the container 14 or any of the other containers described and illustrated herein.
  • a spout is then inserted through a hole in one of the sheets of material and welded or otherwise bonded to the surrounding material to form a hermetic seal between the container and the spout.
  • the inner layer 2020 and the outer layer 2024 are each made of an electrically -insulating material (e.g., anon-conductive material such as polypropylene, polyethylene, or the like) and may be made of the same or different insulating materials.
  • the plurality of intermediate layers 2022a-c includes at least one layer made of a conductive material (e.g., a metal foil such as aluminum or a metalized film such as metalized polyethylene terephthalate).
  • the plurality of intermediate layers 2022a-c includes a first intermediate layer 2022a made of electrically-insulating material, a second intermediate layer 2022b made of the conductive material, and a third intermediate layer 2022c made of electrically-insulating material.
  • the first and third intermediate layers 2022a, 2022c may be made of the same or different insulating materials, and, in some embodiments, are made of the same insulating material as the inner and outer layers 2020, 2024.
  • the second intermediate layer 2022b is disposed between the first and third intermediate layers 2022a, 2022c.
  • the plurality of intermediate layers 2022a-c may thus be referred to as a 3-ply assembly.
  • the 3-ply assembly may act as a hermetic vapor barrier for the container.
  • FIGS. 28-29 illustrate a system 2042 for testing the integrity of a container 2014 that includes two walls 2013a, 2013b welded together at a joint 2015.
  • Each of the walls 2013a, 2013b includes a plurality of layers, such as the layer assembly 2004 described above with reference to FIG. 27.
  • each of the walls 2013a, 2013b includes an outer layer 2024 and at least one intermediate conductive layer 2022b.
  • the illustrated container 2014 includes a spout 2012 with first and second electrodes 2034, 2040 extending through the spout 2014 and into an interior volume 2018 of the container 2014.
  • the spout 2012 may be identical or similar to the spout 912 described above with reference to FIGS. 19-26.
  • the spout 2012 may include only a single electrode 2034.
  • the electrode(s) 2034, 2040 may be provided in a closure, such as the various closure embodiments described and illustrated herein.
  • a conductive patch 2031 is applied to the outer surface of one of the walls 2013a, 2013b (i.e. on the outer layer 2024) at a position at least partially outboard of the joint 2015.
  • the patch 2031 may be made of a conductive tape or adhesive, a conductive paint or ink, or any other conductive material capable of being applied/ adhered to the outer surface one of the walls 2013a, 2013b.
  • multiple discrete conductive patches 2031 may be applied to the container 2014.
  • two or more conductive patches 2031 may be applied to the outer surface of the first wall 2013a or to the outer surface of the second wall 2013b.
  • two or more conductive patches 2031 may be applied to the outer surfaces of each of the walls 2013a, 2013b.
  • a piercing member 2033 extends through the conductive patch 2031 and each of the walls 2013a-b of the container 2014 at a location outboard of the joint 2015.
  • the piercing member 2033 is a conductive staple; however, other conductive piercing members such as pins, rivets, alligator clamps, or the like may be used.
  • the piercing member 2033 is configured to establish an electrically-conductive pathway from each of the conductive layers 2022b to the conductive patch 2031.
  • a conductive fluid such as a conductive gel or paste may be applied to the piercing member 2033 and/or the outer surface of the conductive patch 2031 prior to inserting the piercing member 2033 through the walls 2013a-b of the container 2014.
  • the conductive fluid is carried with the piercing member 2033 into the walls 2013a-b to enhance the electrically conductive connection between the piercing member 2033 and the conductive layers 2022b.
  • the system 2042 includes a control unit 2000, such as the control unit 1000 described above with reference to FIGS. 22-26.
  • the system 2042 advantageously allows the control unit 2000 to test both the integrity of the container 2014 and also to verify that the testing is valid (e.g., to avoid a false pass result in which a breach in the integrity of the container 2014 is not detected by the testing system 2042).
  • control unit 2000 is operable in a first testing mode to test the integrity of the container 2014 and a second testing mode to test that the piercing member 2033 is in electrically conductive contact with the conductive layer(s) 2022b of the container 2014.
  • the control unit 2000 may also be operable in additional testing modes, such as a testing mode to test the integrity of a closure (not shown) coupled to the spout 2012, and/or a testing mode to test the product within the container (e.g., for spoilage, the presence of contaminants, or the like).
  • additional testing modes may be similar to those described above in connection with the control unit 1000 illustrated in FIGS. 22-26 and are not described again for the sake of brevity.
  • the control unit 2000 may also include other test modes in other embodiments.
  • a user may initiate and/or switch between the testing modes using a button, switch, or other interface on the control unit 2000, or a button, switch or other interface on an external device.
  • the control unit 2000 may include a signal or a display unit that alerts the user that a leak is present.
  • a user connects a first contact 2008 from the control unit 2000 to one of the electrodes 2034, 2040 in the spout 2012 and a second contact 2055 from the control unit 2000 to the conductive patch 2031.
  • a power source of the control unit 2000 applies a voltage differential between the first contact 2008 and the second 2055. If a leak occurs in one of the walls 2013a-b of the container 2014, the conductive product 2070 comes into contact with the conductive layer 2022b of the leaking wall 2013a-b (FIG. 29).
  • the product 2070 thereby completes an electrical circuit between the first contact 2008 and the second contact 2055, via the electrode(s) 2034, 2040, the conductive layer 2022b, the piercing member 2033, and the conductive patch 2031.
  • the control unit 2000 may be configured to measure current flow, and the control unit 2000 may determine the presence of a leak if the measured current flow is greater than a stored threshold value. In other embodiments, the first testing mode may use other electrical measurements to determine the integrity of the container 2014.
  • the control unit 2000 may be operable in a second testing mode to test that the piercing member 2033 is in electrically conductive contact with the conductive layer 2022b of the container 2014.
  • the testing system 2042 includes multiple piercing members 2033 and multiple discrete conductive patches 2031. A user connects the first contact 2008 to a first conductive patch 2031 and the second contact 2055 to a second conductive patch 2031.
  • the power source of the control unit 2000 applies a voltage differential between the first contact 2008 and the second 2055. If each of the piercing members 2033 is in electrically conductive contact with the conductive layer(s) 2022b of the container 2013, the conductive layer(s) 2022b complete the circuit between the piercing members 2033. By measuring current flow, the control unit 2000 may therefore verify that the piercing members 2033 are electrically connected to the conductive layer(s) 2022b.
  • the system 2042 may be configured such that the control unit 2000 may verify that the piercing members 2033 are electrically connected to both the conductive layer 2022b of the wall 2013a and the conductive layer 2022b of the wall 2013b.
  • the testing system 2042 includes multiple piercing members 2033 and multiple discrete conductive patches 2031 coupled to the first wall 2013a, and multiple piercing members 2033 and multiple discrete conductive patches 2031 coupled to the second wall 2013b.
  • the piercing members 2033 in such embodiments may extend only through their associated walls 2013a-b.
  • the second testing mode may then be performed twice (i.e., once for each wall 2013a-b) to verify that the piercing members 2033 are electrically connected to the associated conductive layers 2022b.
  • the conductive patch(es) 2031 may be omitted, and the outer layer 2024 may be made of an electrically-conductive material.
  • the second contact 2055 from the control unit 2000 is connected directly to the outer layer 2024 when testing the integrity of the container 2014 in the first testing mode.
  • the conductive outer layer 2024 completes the circuit between the piercing member 2033 and the contact 2055.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Closures For Containers (AREA)

Abstract

Un contenant définit un volume interne configuré pour recevoir un produit électroconducteur. Le contenant comprend une paroi comprenant une couche interne, une couche externe et une couche intermédiaire entre la couche interne et la couche externe. La couche interne est composée d'un matériau électriquement isolant et la couche intermédiaire est composée d'un matériau électroconducteur. Un bec verseur est accouplé à la paroi et présente un passage en communication avec le volume interne. Une fermeture est accouplée au bec verseur pour fermer le passage de façon étanche. Le contenant comprend une première électrode s'étendant à travers la fermeture ou le bec verseur de sorte qu'une extrémité de la première électrode est positionnée à l'intérieur du volume interne pour entrer en contact avec le produit et un élément de perçage configuré pour percer la couche externe de la paroi pour entrer en contact avec la couche intermédiaire.
PCT/US2020/053111 2019-09-27 2020-09-28 Systèmes et procédés de test d'intégrité de contenant WO2021062381A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021123227A1 (de) 2021-09-08 2023-03-09 medentis medical GmbH Sterilgutverpackung, insbesondere Dentalvorrichtungsverpackung, und Verpackungssystem

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993024819A1 (fr) * 1992-05-27 1993-12-09 Anderson Thomas F Detection de la degradation de couches inertes non conductrices contre la paroi interne de cuves de liquide
WO1997007025A1 (fr) * 1995-08-18 1997-02-27 Tetra Laval Holdings & Finance S.A. Procede de controle de la qualite, et recipient et ebauche d'emballage prepares a cet effet
FR2872904A1 (fr) * 2004-07-08 2006-01-13 Bonduelle Sa Ets Procede et dispositif de controle de l'integrite d'un recipient

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993024819A1 (fr) * 1992-05-27 1993-12-09 Anderson Thomas F Detection de la degradation de couches inertes non conductrices contre la paroi interne de cuves de liquide
WO1997007025A1 (fr) * 1995-08-18 1997-02-27 Tetra Laval Holdings & Finance S.A. Procede de controle de la qualite, et recipient et ebauche d'emballage prepares a cet effet
FR2872904A1 (fr) * 2004-07-08 2006-01-13 Bonduelle Sa Ets Procede et dispositif de controle de l'integrite d'un recipient

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021123227A1 (de) 2021-09-08 2023-03-09 medentis medical GmbH Sterilgutverpackung, insbesondere Dentalvorrichtungsverpackung, und Verpackungssystem
EP4147671A1 (fr) * 2021-09-08 2023-03-15 medentis medical GmbH Emballage stérile de produit, en particulier emballage de dispositif dentaire, et système d'emballage

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