Bottle finish package permeability test system

Abstract

The application relates to a bottle mouth packaging permeability test system, which comprises a bottle mouth mold group, a permeation amplification cavity, a carrier gas assembly, a to-be-tested gas assembly, a pressure adjusting assembly, a temperature adjusting assembly and a detection assembly; the bottle mouth mold group is sealingly installed in the permeation amplification cavity; the carrier gas assembly enables carrier gas to flow through the bottle mouth mold group connected in series on the carrier gas assembly; the to-be-tested gas assembly enables to-be-tested gas to flow in the permeation amplification cavity connected in series on the to-be-tested gas assembly; the pressure adjusting assembly is configured to adjust the pressure state of the carrier gas output by the carrier gas assembly and the to-be-tested gas output by the to-be-tested gas assembly; the temperature adjusting assembly is configured to adjust the temperature state of the carrier gas output by the carrier gas assembly and the to-be-tested gas output by the to-be-tested gas assembly; and the detection assembly is connected in communication with the exhaust end of the carrier gas assembly. The application improves the test precision when using the same precision coulomb sensor by improving the permeation amplification effect and the permeation efficiency.

Description

Technical Field

[0001] This application relates to the field of packaging inspection technology, and in particular to a permeability testing system for bottle mouth packaging. Background Technology

[0002] With the rapid development of packaging technology and the increasing complexity of packaging forms, coupled with higher demands for packaging airtightness, the industry has developed various permeability testing devices based on the coulometric method. However, these are mainly limited to film testing, plastic bottles, and metal packaging containers. For fragile packaging materials such as glass bottles and ceramic bottles, or for which destructive testing methods significantly affect the results, reliable testing devices for auxiliary testing and evaluation have not yet emerged.

[0003] Currently, destructive puncture tests on glass beer bottles or carbonated beverage packaging, due to the internal pressure, interfere with the steady-state of the packaging during the puncture process. Simultaneously, damage to the cap affects the stress distribution, further interfering with the test results for packaging seal, leading to significant deviations. Furthermore, most foods and pharmaceuticals are highly sensitive to oxygen or water vapor; even daily percolation at the ppb level can cause irreversible damage to product quality during shelf life. Existing coulometric instruments generally cannot reach the detection limit for this. Current percolation testing methods are also insufficient for evaluating bottle-top packaging with good seals. Summary of the Invention

[0004] Therefore, it is necessary to provide a permeability testing system for bottle-mouth packaging materials to address the issue of how to control the permeation amplification effect of bottle-mouth packaging materials.

[0005] This application provides a permeability testing system for bottle-mouth packaging materials, comprising:

[0006] A permeation amplification chamber is provided, and a bottle mouth mold assembly is sealed and installed inside the permeation amplification chamber; wherein, the bottle mouth mold assembly includes multiple bottle mouth molds connected in series.

[0007] A carrier gas assembly is connected to the bottle mouth mold assembly;

[0008] The test gas assembly is connected to the permeation amplification chamber; the inlet end of the test gas assembly is arranged close to the exhaust end of the carrier gas assembly, and the exhaust end of the test gas assembly is arranged close to the inlet end of the carrier gas assembly.

[0009] The pressure regulating component is configured to regulate the pressure state of the carrier gas output by the carrier gas component and the test gas output by the test gas component.

[0010] A temperature control component is configured to adjust the temperature state of the carrier gas output by the carrier gas component and the gas to be tested output by the gas to be tested component; and

[0011] The detection component is connected to the exhaust end of the carrier gas component.

[0012] In one embodiment, it further includes:

[0013] A purification device is installed between the carrier gas assembly and the bottle mouth mold assembly.

[0014] In one embodiment, it further includes:

[0015] A protective chamber is provided outside the permeation amplification chamber, and the gas pressure inside the permeation amplification chamber, the gas pressure inside the protective chamber, and the atmospheric pressure are arranged in a gradient that decreases sequentially.

[0016] The air inlet passage and the air outlet passage of the protective cavity are respectively connected to the protective cavity;

[0017] Two protective chamber regulating valves are provided, one of which is installed on the air inlet passage and the air outlet passage of the protective chamber.

[0018] A first sensor for the protective cavity, configured to acquire the gas pressure within the protective cavity, is mounted on the exhaust passage of the protective cavity; and

[0019] A second sensor for the protective cavity is configured to acquire the gas temperature inside the protective cavity, and the second sensor for the protective cavity is installed inside the protective cavity.

[0020] In one embodiment, it further includes:

[0021] A protective cavity heater and a protective cavity cooler are installed inside the protective cavity.

[0022] In one embodiment, it further includes:

[0023] A drying device is configured to dry the carrier gas introduced into the bottle mouth mold assembly and the gas to be tested introduced into the permeation amplification chamber.

[0024] In one embodiment, the carrier gas assembly includes:

[0025] A carrier gas inlet passage, wherein a first end of the carrier gas inlet passage is configured to allow the carrier gas to enter, and a second end of the carrier gas inlet passage is connected to the inlet end of the bottle mouth mold assembly;

[0026] A carrier gas exhaust passage, the first end of which is connected to the exhaust end of the bottle mouth mold assembly, and the second end of which is connected to the detection component;

[0027] Two first regulating valves, one of which is installed on the carrier gas inlet passage and the other on the carrier gas exhaust passage; and

[0028] The first pressure reducing valve is installed in the carrier gas inlet passage.

[0029] In one embodiment, the gas to be tested component includes:

[0030] The gas to be tested is introduced into a test gas inlet passage. The first end of the test gas inlet passage is configured to introduce the test gas, and the second end of the test gas inlet passage is connected to the inlet of the permeation amplification chamber. The inlet is located in the permeation amplification chamber near the exhaust end of the carrier gas assembly.

[0031] The exhaust passage of the gas to be tested is connected to the exhaust port of the permeation amplification chamber, wherein the exhaust port is arranged in the permeation amplification chamber near the inlet end of the carrier gas assembly;

[0032] A second regulating valve is installed in the air intake passage of the gas to be tested; and

[0033] The second pressure reducing valve is installed in the air intake passage of the gas to be tested.

[0034] In one embodiment, the pressure regulating component includes:

[0035] A carrier gas exhaust valve is installed in the carrier gas inlet passage;

[0036] The first sensor of the carrier gas path is configured to acquire the gas pressure in the carrier gas inlet passage and the carrier gas exhaust passage.

[0037] The exhaust valve for the gas under test is installed in the gas inlet passage; and

[0038] The first sensor of the gas path under test is configured to acquire the gas pressure in the gas inlet passage and the gas outlet passage under test.

[0039] In one embodiment, the temperature regulating component includes:

[0040] The heat exchange assembly is configured to heat the carrier gas introduced into the bottle mouth mold assembly and the test gas introduced into the permeation amplification chamber, respectively, and to cool the carrier gas discharged from the bottle mouth mold assembly; or the heat exchange assembly is configured to cool the carrier gas introduced into the bottle mouth mold assembly and the test gas introduced into the permeation amplification chamber, respectively, and to heat the carrier gas discharged from the bottle mouth mold assembly.

[0041] A second sensor for the carrier gas path is configured to acquire the gas temperature in the carrier gas intake passage and the carrier gas exhaust passage; and

[0042] The second sensor of the gas path under test is configured to acquire the temperature in the gas inlet passage and the gas outlet passage under test.

[0043] In one embodiment, the heat exchange assembly includes:

[0044] The first heat exchanger is installed with the carrier gas inlet passage;

[0045] The second heat exchanger is installed in the carrier gas exhaust passage;

[0046] The third heat exchanger is installed in the air intake passage of the gas to be tested;

[0047] When the first heat exchanger is configured to heat the carrier gas introduced into the bottle mouth mold assembly, the second heat exchanger is configured to cool the carrier gas discharged from the bottle mouth mold assembly; or when the first heat exchanger is configured to cool the carrier gas introduced into the bottle mouth mold assembly, the second heat exchanger is configured to heat the carrier gas discharged from the bottle mouth mold assembly.

[0048] This application achieves control over the permeation amplification effect of bottle mouth packaging by adjusting the number of series stages of the bottle mouth molds in the bottle mouth mold group and coordinating with the adjustment of pressure and temperature, thus providing a better solution for permeation testing of bottle mouth packaging. Attached Figure Description

[0049] Figure 1 A schematic diagram of the structure of a bottle mouth packaging permeability testing system provided in one embodiment of this application is shown.

[0050] Figure 2 A schematic diagram of the test gas path purging of a bottle mouth packaging permeability testing system provided in one embodiment of this application is shown.

[0051] Figures 3a to 3d A schematic diagram of the shape of the permeation medium flow channel in one embodiment of this application is shown.

[0052] Icon labels:

[0053] 100-Bottle neck mold assembly;

[0054] 101 - Bottle neck mold;

[0055] 200-permeation amplification cavity;

[0056] 201 - The airflow channel to be tested;

[0057] 310 - Carrier gas intake passage;

[0058] 320 - Carrier gas exhaust passage;

[0059] 330 - First regulating valve;

[0060] 340 - First pressure reducing valve;

[0061] 410 - Test gas inlet passage;

[0062] 420 - Test gas exhaust passage;

[0063] 430 - Second regulating valve;

[0064] 440 - Second pressure reducing valve;

[0065] 500-Detection Components;

[0066] 501 - Sensor;

[0067] 600-Purification device;

[0068] 710 - Protective cavity;

[0069] 720 - Protective chamber air intake passage;

[0070] 730 - Protective cavity exhaust passage;

[0071] 740 - Protective cavity regulating valve;

[0072] 750 - First sensor for the protective cavity;

[0073] 760 - Second sensor for the protective cavity;

[0074] 770 - Protective cavity heater;

[0075] 780 - Protective cavity cooler;

[0076] 800-Drying device;

[0077] 910 - Carrier air circuit exhaust valve;

[0078] 920 - First sensor for carrier gas path;

[0079] 930 - Exhaust valve of the gas circuit to be tested;

[0080] 940 - First sensor of the gas path under test;

[0081] 1011 - First heat exchanger;

[0082] 1012 - Second heat exchanger;

[0083] 1013 - Third heat exchanger;

[0084] 1020 - Second sensor for carrier gas path;

[0085] 1030 - Second sensor for the gas path under test;

[0086] 1040 - Carrier air circuit exhaust regulating valve;

[0087] 1101 - Two-position five-way valve for the gas circuit under test;

[0088] 1100 - Carrier air circuit two-position four-way valve;

[0089] 1240 - Exhaust regulating valve for the gas path under test. Detailed Implementation

[0090] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0091] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0092] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0093] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0094] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0095] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0096] See Figure 1 To Figure 3, Figure 1 This illustration shows a schematic diagram of the permeability testing system for bottle opening packaging provided in one embodiment of this application. Figure 2 This diagram illustrates the purging process of the test gas path in a bottle neck packaging permeability testing system provided in one embodiment of this application. Figures 3a to 3dA schematic diagram of the permeation medium flow channel in one embodiment of this application is shown. This embodiment provides a bottle-mouth packaging permeability testing system, including: a bottle-mouth mold assembly 100, a permeation amplification chamber 200, a carrier gas assembly, a test gas assembly, a pressure regulating assembly, a temperature regulating assembly, and a detection assembly 500. The bottle-mouth mold assembly 100 is sealed and installed within the permeation amplification chamber 200, wherein the bottle-mouth mold assembly 100 includes multiple bottle-mouth molds 101 connected in series. The carrier gas assembly allows the carrier gas to flow through the bottle-mouth mold assembly 100 connected in series with the carrier gas assembly. The test gas assembly allows the test gas to flow through the permeation amplification chamber 200 connected in series with the test gas assembly. The inlet end of the test gas assembly is arranged near the outlet end of the carrier gas assembly, and the outlet end of the test gas assembly is arranged near the inlet end of the carrier gas assembly. The pressure regulating component is configured to regulate the pressure of the carrier gas output by the carrier gas component and the test gas output by the test gas component; the temperature regulating component is configured to regulate the temperature of the carrier gas output by the carrier gas component and the test gas output by the test gas component; the detection component 500 is connected to the exhaust end of the carrier gas component.

[0097] This application, by arranging a series-connected gas path bottle neck mold assembly 100, not only achieves amplified permeation effects without damaging the packaging, but also allows adjustment of the permeation amplification effect of the bottle neck packaging by changing the number of series stages of the bottle neck molds 101 within the assembly 100. Simultaneously, the included pressure and temperature adjustment components flexibly adjust the temperature and pressure of the carrier gas output from the carrier gas assembly and the test gas output from the test gas assembly to improve permeation efficiency. This application, by enhancing both permeation amplification and permeation efficiency, improves the experimental accuracy when using coulomb detection components of the same precision.

[0098] In one embodiment of this application, a purification device 600 is further included. The purification device 600 is installed between the carrier gas assembly and the bottle mouth mold assembly 100. In this embodiment, by setting up the purification device 600 to purify the carrier gas to be introduced into the bottle mouth mold assembly 100, the accuracy of the test results is improved.

[0099] In one embodiment of this application, it further includes: a protective cavity 710, a protective cavity air inlet passage 720, a protective cavity exhaust passage 730, two protective cavity regulating valves 740, a protective cavity first sensor 750, and a protective cavity second sensor 760.

[0100] A protective chamber 710 is enclosed outside the permeation amplification chamber 200. An air inlet passage 720 and an air outlet passage 730 are connected to the protective chamber 710. A protective chamber regulating valve 740 is installed on each of the air inlet and outlet passages 720 to control the air flow rate. A first sensor 750 is installed on the air outlet passage 730 to obtain the gas pressure inside the protective chamber 710. A second sensor 760 is installed inside the protective chamber 710 to obtain the gas temperature inside the protective chamber 710.

[0101] In this embodiment, the protective chamber regulating valve 740, in conjunction with the protective chamber first sensor 750, adjusts the pressure within the protective chamber 710 to create a gradient configuration where the gas pressure in the permeation amplification chamber 200, the gas pressure in the protective chamber 710, and the atmospheric pressure decrease sequentially. This reduces the structural strength requirements of the gas path in the gas assembly under test. Furthermore, adjusting the pressure within the protective chamber 710 can provide different pressure oscillation test conditions, thereby expanding the applicability of the test system.

[0102] Furthermore, it also includes a protective cavity heater 770 and a protective cavity cooler 780, installed within the protective cavity 710. These are used to regulate the temperature of the protective cavity 710. Optionally, when the gas temperature inside the protective cavity 710 detected by the second sensor is lower than a preset temperature, the protective cavity heater 770 is activated to increase the temperature inside the protective cavity 710; when the temperature inside the protective cavity 710 reaches the preset temperature, the protective cavity heater 770 is deactivated. Alternatively, when the gas temperature inside the protective cavity 710 detected by the second sensor is higher than the preset temperature, the protective cavity cooler 780 is activated to decrease the temperature inside the protective cavity 710; when the temperature inside the protective cavity 710 reaches the preset temperature, the protective cavity cooler 780 is deactivated. Optionally, to make the heat distribution inside the protective cavity 710 more uniform, a heat transfer fan can also be installed inside the protective cavity 710.

[0103] In one embodiment of this application, a test airflow channel 201 is provided inside the permeation amplification chamber 200 to guide the permeation medium introduced into the permeation amplification chamber 200. At this time, each bottle mouth mold 101 in the bottle mouth mold group 100 is arranged sequentially along the test airflow channel 201, so that each bottle mouth mold 101 in the bottle mouth mold group 100 is in an atmosphere in which the permeation medium is introduced. Regarding the shape of the test airflow channel, a U-shaped test airflow channel 201 can be selected (see reference). Figure 3a As shown), the S-shaped airflow channel 201 to be tested (reference) Figure 3b As shown), the test airflow channel 201 is in the form of a loop (reference). Figure 3c As shown), the test airflow channel 201 is spiral-shaped (reference). Figure 3dOther flow channel arrangement shapes that are known to those skilled in the art (as shown) can also be selected, and no specific restrictions are imposed here.

[0104] In one embodiment of the application, a drying device 800 is also included. The drying device 800 is configured to dry the carrier gas introduced into the bottle mouth mold assembly 100 and the test gas introduced into the permeation amplification chamber 200.

[0105] The carrier gas assembly specifically includes: a carrier gas inlet passage 310, a carrier gas exhaust passage 320, a first regulating valve 330, and a first pressure reducing valve 340. The first end of the carrier gas inlet passage 310 is connected to a carrier gas cylinder, allowing carrier gas to enter. The second end of the carrier gas inlet passage 310 is connected to a bottle mouth mold 101 at one end of the bottle mouth mold assembly 100. The carrier gas passes sequentially through each bottle mouth mold 101 in the bottle mouth mold assembly 100 until it reaches the bottle mouth mold 101 at the other end of the assembly. The carrier gas is then output from the first end of the carrier gas exhaust passage 320 to the outside of the assembly. Simultaneously, the second end of the carrier gas exhaust passage 320 is connected to a detection component 500, which detects the remaining oxygen, air, etc., in the carrier gas exhaust passage 320 after passing through the bottle mouth mold assembly 100. A first regulating valve 330 and a first pressure reducing valve 340 are installed on the carrier gas inlet passage 310, and a first regulating valve 330 is installed on the carrier gas exhaust passage 320 to ensure that the carrier gas entering the bottle mouth mold group 100 has a stable flow rate and pressure.

[0106] The test gas assembly specifically includes: test gas inlet passage 410, test gas exhaust passage 420, second regulating valve 430, and second pressure reducing valve 440.

[0107] The first end of the test gas inlet passage 410 is connected to the carrier gas cylinder of the test gas, allowing the test gas to be introduced into the test gas inlet passage 410. The second end of the test gas inlet passage 410 is connected to the inlet of the permeation amplification chamber 200, allowing the test gas to be introduced into the permeation amplification chamber 200. It is important to note that the inlet is located in the permeation amplification chamber 200 near the exhaust end of the carrier gas assembly, and the exhaust port is located in the permeation amplification chamber 200 near the inlet end of the carrier gas assembly. The test gas is discharged from the permeation amplification chamber 200 through the test gas exhaust passage 420, which is connected to the exhaust port of the permeation amplification chamber 200. A second regulating valve 430 and a second pressure reducing valve 440 are installed on the test gas inlet passage 410, and a test gas exhaust regulating valve 1240 is installed on the test gas exhaust passage 420 to ensure that the test gas entering the permeation amplification chamber 200 has a stable flow rate and pressure.

[0108] The pressure regulating components specifically include: a carrier gas exhaust valve 910, a carrier gas first sensor 920, a test gas exhaust valve 930, and a test gas first sensor 940. The carrier gas exhaust valve 910 is installed in the carrier gas inlet passage 310; the carrier gas first sensor 920 is configured to acquire the gas pressure in the carrier gas inlet passage 310 and the carrier gas exhaust passage 320; the test gas exhaust valve 930 is installed in the test gas inlet passage 410; and the test gas first sensor 940 is configured to acquire the gas pressure in the test gas inlet passage 410 and the test gas exhaust passage 420.

[0109] The temperature control components specifically include: a heat exchange component, a second sensor 1020 for the carrier gas path, and a second sensor 1030 for the gas to be tested path. The heat exchange component is configured to heat the carrier gas entering the bottle mouth mold assembly 100 and the gas to be tested entering the permeation amplification chamber 200, respectively, and to cool the carrier gas exiting the bottle mouth mold assembly 100; or the heat exchange component is configured to cool the carrier gas entering the bottle mouth mold assembly 100 and the gas to be tested entering the permeation amplification chamber 200, respectively, and to heat the carrier gas exiting the bottle mouth mold assembly 100. The second sensor 1020 for the carrier gas path is configured to acquire the gas temperature in the carrier gas inlet passage 310 and the carrier gas exhaust passage 320. The second sensor 1030 for the gas to be tested path is configured to acquire the temperature in the gas to be tested inlet passage 410 and the gas to be tested exhaust passage 420.

[0110] Furthermore, the heat exchange assembly includes: a first heat exchanger 1011, a second heat exchanger 1012, and a third heat exchanger 1013. The first heat exchanger 1011 is installed in the carrier gas inlet passage 310; the second heat exchanger 1012 is installed in the carrier gas exhaust passage 320; and the third heat exchanger 1013 is installed in the gas inlet passage 410.

[0111] In an optional embodiment, when the first heat exchanger 1011 heats the carrier gas introduced into the bottle mouth mold assembly 100, the second heat exchanger 1012 cools the carrier gas discharged from the bottle mouth mold assembly 100. At this time, the third heat exchanger 1013 generally also heats the gas to be tested introduced into the permeation amplification chamber 200.

[0112] In another optional embodiment, when the first heat exchanger 1011 cools the carrier gas introduced into the bottle mouth mold assembly 100, the second heat exchanger 1012 heats the carrier gas discharged from the bottle mouth mold assembly 100. At this time, the third heat exchanger 1013 generally also cools the gas to be tested introduced into the permeation amplification chamber 200.

[0113] The control method of the bottle mouth packaging permeability testing system provided in one embodiment of this application includes a purging step, a permeation execution step, and a load removal step.

[0114] The purging steps include: a system reset sub-step, a carrier gas path purging sub-step, and a test gas path purging sub-step.

[0115] The system reset sub-step acquires the temperature, pressure, and flow data of each sensor. If the requirements are met, the reset is successful, and the program proceeds to the carrier gas path purging sub-step.

[0116] During the carrier gas path purging sub-step, the carrier gas path two-position four-way valve 1100 is in the first position (e.g., ...). Figure 1 As shown, the carrier gas can be discharged through the carrier gas inlet passage 310, the bottle mouth mold group 100, the carrier gas exhaust passage 320, the first end of the carrier gas two-position four-way valve 1100, the sensor 501 of the detection component 500, the second end of the carrier gas two-position four-way valve 1100, and then through the carrier gas exhaust regulating valve 1040. The purging is completed when the set sensor output value is reached. The program then enters the test gas path purging sub-step.

[0117] In one specific embodiment, the carrier gas path can be set to a flow rate of 40 ml / min, a temperature of 40°C, and a pressure of 0 MPa. The output value of sensor 501, which tends to be constant after the carrier gas path purging sub-step is run, can reflect the airtightness of the carrier gas path of the bottle mouth packaging permeability test system to a certain extent. When the airtightness is not good, the set value cannot be reached. At this time, the airtightness of the carrier gas path structure of the bottle mouth packaging permeability test system can be checked.

[0118] When the test air circuit purge sub-step is running, the test air circuit two-position five-way valve 1101 is in the second position (e.g. Figure 2As shown), the exhaust regulating valve 1240 of the gas path under test closes according to the set time. The carrier gas can be discharged through the carrier gas inlet passage 310, the bottle mouth mold assembly 100, the carrier gas outlet passage 320, the first end of the carrier gas two-position four-way valve 1100, the sensor 501 of the detection component 500, the second end of the carrier gas two-position four-way valve 1100, the two-position five-way valve 1101 of the gas path under test, and the gas inlet passage 410 of the gas path under test through the exhaust valve 930 of the gas path under test. After the exhaust regulating valve 1240 of the gas path under test reaches the set closing time, it opens. At this time, the exhaust valve 930 of the gas path under test closes, and the carrier gas can be changed to pass through the inside of the permeation amplification chamber 200 and the bottle mouth mold. The gas is discharged from the outside of assembly 100, through the exhaust passage 420 of the gas to be tested, and finally through the exhaust regulating valve 1240 of the gas to be tested. The purging continues until the output value set by the first sensor 920 (carrier gas pressure sensor), the first sensor 940 (pressure sensor), the second sensor 1020 (temperature sensor), the second sensor 1030 (temperature sensor), the first sensor 750 (pressure sensor), and the second sensor 760 (temperature sensor) of the protection chamber is reached. Then the sub-step is completed and the program jumps to the permeation execution step.

[0119] In one specific embodiment, the carrier gas path can be set to a flow rate of 60 ml / min, a temperature of 40°C, and a pressure of 0 MPa. The output value of sensor 501, which tends to be constant and lower than that of the carrier gas path purging sub-step, obtained after the test gas path purging sub-step, can further reflect the airtightness of the test gas path and its downstream section. When the airtightness is poor, the first sensor 920 (carrier gas path pressure sensor) and the test gas path cannot achieve their intended functions. The output values ​​set for the first gas path sensor 940 (pressure sensor of the gas path under test), the second carrier gas path sensor 1020 (temperature sensor of the carrier gas path), the second gas path sensor 1030 (temperature sensor of the gas path under test), the first protective cavity sensor 750 (pressure sensor of the protective cavity), and the second protective cavity sensor 760 (temperature sensor of the protective cavity) can be used to check the airtightness of the gas path under test and the downstream structural components of the carrier gas path in the bottle mouth packaging permeability test system.

[0120] The permeation execution steps include: a test gas replacement sub-step, a permeation test sub-step, and a test judgment sub-step.

[0121] When the test gas replacement step is running, the two-position five-way valve 1101 of the test gas path is in the first position (e.g. Figure 1As shown, the gas enters through the gas inlet passage 410, passes inside the permeation amplification chamber 200 and outside the bottle mouth mold assembly 100, and exits through the gas exhaust passage 420 and finally through the gas exhaust regulating valve 1240. When the signal of sensor 501 of the detection component 500 rises to a relatively constant level and the second sensor 1030 of the gas under test in the gas exhaust passage 420 reaches the set output value of the first sensor 920 (carrier gas pressure sensor), the first sensor 940 (gas pressure sensor), the second sensor 1020 (carrier gas temperature sensor), the second sensor 1030 (gas temperature sensor), the first sensor 750 (protective chamber pressure sensor), and the second sensor 760 (protective chamber temperature sensor), the gas replacement sub-step ends, and the program enters the permeation test sub-step.

[0122] In one specific embodiment, the flow rate of the gas path to be tested can be set to 60 ml / min, the temperature of the carrier gas path can be set to 40°C, and the pressure of the carrier gas path can be set to 0 MPa.

[0123] During the penetration test sub-step, in the first stage of operation, the carrier gas path exhaust regulating valve 1040 and the test gas path exhaust regulating valve 1240 remain closed, while the protective chamber regulating valve 740 opens simultaneously. When the test gas path, carrier gas path, and the first sensor 750 of the protective chamber reach the set pressure, the protective chamber regulating valve 740 closes. The first regulating valve 330 and the carrier gas path exhaust regulating valve 1040 synchronously adjust to maintain the carrier gas path flow rate and pressure at the set values. The second regulating valve 430 and the test gas path exhaust regulating valve 1240 adjust to maintain the test gas path flow rate and pressure at the set values. At the same time, the first heat exchanger 1011, the second heat exchanger 1012, and the third heat exchanger 1013 maintain the set temperatures of the carrier gas inlet passage 310, the carrier gas exhaust passage 320, the test gas inlet passage 410, and the test gas exhaust passage 420, respectively. When the first sensor 920 (carrier gas pressure sensor), the first sensor 940 (test gas pressure sensor), the second sensor 1020 (carrier gas temperature sensor), the second sensor 1030 (test gas temperature sensor), the first sensor 750 (protective cavity pressure sensor), and the second sensor 760 (protective cavity temperature sensor) of the protective cavity all reach their set values, the permeation test sub-step ends, and the program proceeds to the test judgment sub-step. In one specific embodiment, the carrier gas path can be set to a flow rate of 10 ml / min, a temperature of 40°C, and a pressure of 0.09 MPa; or the carrier gas path can be set to a flow rate of 20 ml / min, a temperature of 40°C, and a pressure of 0.05 MPa; the first sensor 750 of the protective cavity can be set to a pressure of 0.02 MPa.

[0124] The test judgment sub-step includes standard detection mode, constant temperature and pressure mode, conditional oscillation mode, self-calibration mode, and multiple custom modes. When the program completes the set detection steps and the signal of sensor 501 of detection component 500 tends to be constant, the test judgment sub-step ends, and the program jumps to the load removal step.

[0125] The load removal process includes: pressure unloading sub-step, temperature unloading sub-step, and standby sub-step.

[0126] During the pressure unloading sub-step, firstly, the first heat exchanger 1011, the second heat exchanger 1012, and the third heat exchanger 1013 cease operation. Secondly, the exhaust regulating valve 1240 of the test gas path and the exhaust regulating valve 1040 of the carrier gas path simultaneously open and gradually release pressure according to the pressure value to protect all components in the bottle mouth packaging permeability test system. When the pressure reaches the set value, the pressure unloading sub-step ends, and the program proceeds to the temperature unloading sub-step.

[0127] During the temperature unloading sub-step, the carrier gas path exhaust regulating valve 1040 and the test gas path exhaust regulating valve 1240 are fully open. The flow rates of the carrier gas path and the test gas path are maintained at the set values ​​through the first regulating valve 330 and the second regulating valve 430. When the temperature reaches the set value, the temperature unloading sub-step ends, and the program enters the standby sub-step.

[0128] Preferably, when the instrument needs to be stored for a long time after the test is completed, after the temperature unloading sub-step reaches the set temperature, the test gas path can be replaced with carrier gas to protect the structural components from oxidation and extend the instrument's lifespan.

[0129] When the standby sub-step is running, all components in the bottle opening packaging permeability test system stop working and all valves remain closed.

[0130] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0131] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A permeability testing system for bottle-mouth packaging materials, characterized in that, include: A permeation amplification chamber (200) is provided, and a bottle mouth mold assembly (100) is sealed and installed inside the permeation amplification chamber (200); wherein the bottle mouth mold assembly (100) includes a plurality of bottle mouth molds (101) connected in series. The carrier gas assembly is connected to the bottle mouth mold assembly (100); The gas to be tested assembly is connected to the permeation amplification chamber (200); the inlet end of the gas to be tested assembly is arranged close to the exhaust end of the carrier gas assembly, and the exhaust end of the gas to be tested assembly is arranged close to the inlet end of the carrier gas assembly. The pressure regulating component is configured to regulate the pressure state of the carrier gas output by the carrier gas component and the test gas output by the test gas component. A temperature control component is configured to adjust the temperature state of the carrier gas output by the carrier gas component and the gas to be tested output by the gas to be tested component; and The detection component (500) is connected to the exhaust end of the carrier gas component.

2. The bottle-mouth packaging permeability testing system according to claim 1, characterized in that, Also includes: A purification device (600) is installed between the carrier gas assembly and the bottle mouth mold assembly (100).

3. The bottle-mouth packaging permeability testing system according to claim 1, characterized in that, Also includes: A protective chamber (710) is provided outside the permeation amplification chamber (200), and the gas pressure in the permeation amplification chamber (200), the gas pressure in the protective chamber (710), and the atmospheric pressure are arranged in a gradient that decreases sequentially. The air inlet passage (720) and the air outlet passage (730) of the protective cavity are respectively connected to the protective cavity (710); Two protective chamber regulating valves (740) are provided, one of which is installed on the protective chamber air inlet passage (720) and the protective chamber exhaust passage (730). A first sensor (750) for the protective cavity is configured to acquire the gas pressure inside the protective cavity (710), and the first sensor (750) for the protective cavity is mounted on the exhaust passage (730) of the protective cavity; as well as A second sensor (760) for the protective cavity is configured to acquire the gas temperature inside the protective cavity (710), the second sensor (760) for the protective cavity being installed inside the protective cavity (710).

4. The bottle-mouth packaging permeability testing system according to claim 3, characterized in that, Also includes: A protective cavity heater (770) and a protective cavity cooler (780) are installed inside the protective cavity (710).

5. The bottle-mouth packaging permeability testing system according to claim 1, characterized in that, Also includes: The drying device (800) is configured to dry the carrier gas introduced into the bottle mouth mold assembly (100) and the gas to be tested introduced into the permeation amplification chamber (200).

6. The bottle neck packaging permeability testing system according to any one of claims 1 to 5, characterized in that, The carrier gas assembly includes: A carrier gas inlet passage (310) is provided, with its first end configured to allow the carrier gas to pass through, and its second end connected to the inlet end of the bottle mouth mold assembly (100). Carrier gas exhaust passage (320), the first end of which is connected to the exhaust end of the bottle mouth mold assembly (100), and the second end of which is connected to the detection component (500); Two first regulating valves (330), one of which is installed on the carrier gas inlet passage (310) and the carrier gas exhaust passage (320); and The first pressure reducing valve (340) is installed in the carrier gas intake passage (310).

7. The bottle neck packaging permeability testing system according to claim 6, characterized in that, The gas to be tested component includes: The gas to be tested intake passage (410) has a first end configured to allow the gas to be tested to pass through, and a second end of the gas to be tested intake passage (410) is connected to the inlet of the permeation amplification chamber (200), wherein the inlet is located in the permeation amplification chamber (200) near the exhaust end of the carrier gas assembly. The exhaust passage (420) for the gas to be tested is connected to the exhaust port of the permeation amplification chamber (200), wherein the exhaust port is arranged in the permeation amplification chamber (200) near the inlet end of the carrier gas assembly; A second regulating valve (430) is installed in the air intake passage (410) of the gas to be tested; and The second pressure reducing valve (440) is installed in the gas inlet passage (410) of the gas to be tested.

8. The bottle-mouth packaging permeability testing system according to claim 7, characterized in that, The pressure regulating component includes: A carrier gas exhaust valve (910) is installed in the carrier gas inlet passage (310). The first sensor (920) of the carrier gas path is configured to acquire the gas pressure in the carrier gas inlet passage (310) and the carrier gas exhaust passage (320); The exhaust valve (930) of the gas under test is installed in the gas inlet passage (410); and The first sensor (940) of the gas path under test is configured to acquire the gas pressure in the gas inlet passage (410) and the gas outlet passage (420) under test.

9. The bottle neck packaging permeability testing system according to claim 7, characterized in that, The temperature regulation component includes: The heat exchange assembly is configured to heat the carrier gas introduced into the bottle mouth mold assembly (100) and the test gas introduced into the permeation amplification chamber (200) respectively, and to cool the carrier gas discharged from the bottle mouth mold assembly (100); or the heat exchange assembly is configured to cool the carrier gas introduced into the bottle mouth mold assembly (100) and the test gas introduced into the permeation amplification chamber (200) respectively, and to heat the carrier gas discharged from the bottle mouth mold assembly (100). A second sensor (1020) for the carrier gas path is configured to acquire the gas temperature in the carrier gas inlet passage (310) and the carrier gas exhaust passage (320); and The second sensor (1030) of the gas path under test is configured to acquire the temperature in the gas inlet passage and the gas outlet passage (420) under test.

10. The bottle-mouth packaging permeability testing system according to claim 9, characterized in that, The heat exchange assembly includes: The first heat exchanger (1011) is equipped with the carrier gas inlet passage (310). The second heat exchanger (1012) is installed in the carrier gas exhaust passage (320). The third heat exchanger (1013) is installed in the gas inlet passage (410) of the gas to be tested. When the first heat exchanger (1011) is configured to heat the carrier gas introduced into the bottle mouth mold assembly (100), the second heat exchanger (1012) is configured to cool the carrier gas discharged from the bottle mouth mold assembly (100); or when the first heat exchanger (1011) is configured to cool the carrier gas introduced into the bottle mouth mold assembly (100), the second heat exchanger (1012) is configured to heat the carrier gas discharged from the bottle mouth mold assembly (100).

Images