Device for testing air permeability of hygienic product

Abstract

The utility model discloses a hygienic product air permeability testing device, which comprises an upper cup body, a lower cup body, a lower cup body and a testing device, wherein one end of the upper cup body is open and is provided with a first flange; one end of the lower cup body is open and provided with a second flange, and an air inlet is formed in the lower cup body; the limiting mechanism forces the first flange and the second flange to clamp the hygienic product to be detected; the air pump is connected with the air inlet hole of the lower cup body; the first barometer is connected with the upper cup body and used for detecting the air pressure in the upper cup body; the air permeability of the hygienic product can be analyzed by observing the change of the air pressure in the first air pressure meter. The to-be-detected hygienic product is clamped through the first flange and the second flange, then gas is introduced into the lower cup body to increase the air pressure in the lower cup body, and the air permeability of the hygienic product can be indirectly detected and analyzed by observing the change amplitude and change time of the air pressure in the upper cup body; the testing device has no limitation requirement on the thickness of the hygienic product, and is simple in structure and low in cost.

Description

Technical Field

[0001] This application relates to the technical field of material property testing, and particularly to a testing device for the air permeability of sanitary products. Background Art

[0002] Sanitary products worn on the human body, such as condoms, disposable gloves, diapers, etc., not only need to have excellent liquid isolation performance, but also need to have a certain air permeability to improve the comfort of human wearing. Since it is often difficult to balance the sealing and air permeability of film materials, it is necessary to repeatedly test the structure and materials in the early design stage.

[0003] Currently, there are instruments on the market for measuring the air permeability of thin films (oxygen permeability testers), but due to their limitations, the thickness of the material to be tested needs to be less than 3 mm. For some sanitary products with a composite multi-layer structure, their thickness may exceed 3 mm, so that traditional instruments cannot be used for air permeability detection.

[0004] Moreover, traditional instruments for detecting the air permeability of thin films have complex structures and high costs, which also limit their popularity to a certain extent. Summary of the Invention

[0005] An object of this application is to at least solve one of the technical problems existing in the prior art, and to provide a testing device for the air permeability of sanitary products, which can detect the air permeability of sanitary products with different thicknesses, and has a simple structure, can reduce costs and is convenient for popularization in the market.

[0006] According to an embodiment of this application, a testing device for the air permeability of sanitary products is provided, including:

[0007] An upper cup body, one end of the upper cup body is closed, and the other end is open and provided with a first flange;

[0008] A lower cup body, one end of the lower cup body is closed, and the other end is open and provided with a second flange. A sanitary product to be detected is clamped between the first flange and the second flange. The lower cup body is provided with an air inlet hole;

[0009] A limiting mechanism, which forces the first flange and the second flange to clamp the sanitary product to be detected;

[0010] An air pump, which is connected to the air inlet hole of the lower cup body and is used to fill the lower cup body with gas;

[0011] A first pressure gauge, which is connected to the upper cup body to detect the air pressure in the upper cup body;

[0012] Wherein, the air permeability of the sanitary product can be analyzed by observing the change of the air pressure in the first pressure gauge.

[0013] According to an embodiment of the present application, further, a sealing ring is further provided between the first flange and the second flange, and the sanitary product to be detected is arranged within the sealing ring.

[0014] According to an embodiment of the present application, further, the sanitary product air permeability testing device further includes an air valve, the upper cup body is provided with an exhaust hole, and the air valve is installed in the exhaust hole.

[0015] According to an embodiment of the present application, further, the limiting mechanism is specifically a buckle, the buckle is hinged to the first flange and can be buckled with the second flange, or the buckle is hinged to the second flange and can be buckled with the first flange.

[0016] According to an embodiment of the present application, further, the limiting mechanism includes an upper pressing seat, a lower pressing seat and a driving member, the upper pressing seat abuts against the top surface of the upper cup body, the lower pressing seat abuts against the bottom surface of the lower cup body, and the driving member drives the upper pressing seat and the lower pressing seat to approach each other.

[0017] According to an embodiment of the present application, further, the limiting mechanism is specifically a locking bolt, both the first flange and the second flange are provided with mounting holes through which the locking bolt can pass, and the locking bolt passes through the mounting holes of the first flange and the second flange to lock the two.

[0018] According to an embodiment of the present application, further, a base is provided at the bottom of the lower cup body, and the base extends laterally compared with the lower cup body for increasing the contact area with the ground.

[0019] According to an embodiment of the present application, further, a second pressure gauge is installed on the air pump, and the second pressure gauge is used to detect the output air pressure of the air pump.

[0020] According to an embodiment of the present application, further, both the upper cup body and the lower cup body are cylindrical.

[0021] According to an embodiment of the present application, further, both the upper cup body and the lower cup body are transparent members.

[0022] The beneficial effects of the embodiments of the present application at least include: The present application clamps the sanitary product to be detected through the first flange and the second flange, then introduces gas into the lower cup body to increase the air pressure in the lower cup body, and by observing the change range and change time of the air pressure in the upper cup body, the air permeability of the sanitary product can be indirectly detected and analyzed; this testing device has no limitation requirements on the thickness of the sanitary product, and has a simple structure and low cost. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the described accompanying drawings are only a part of the embodiments of the present application, rather than all the embodiments. Without creative work, those skilled in the art can also obtain other design solutions and accompanying drawings based on these drawings.

[0024] Figure 1 It is a structural diagram of the device for testing the air permeability of the sanitary product in the embodiment of the present application;

[0025] Figure 2 It is a bottom view of the upper cup body 100 in the device for testing the air permeability of the sanitary product in the embodiment of the present application.

[0026] Reference numerals: 100 - upper cup body, 110 - first flange, 200 - lower cup body, 210 - second flange, 220 - base, 300 - air pump, 310 - second pressure gauge, 400 - first pressure gauge, 500 - sealing ring, 600 - air valve, 700 - sanitary product. Detailed implementation manners

[0027] This part will describe the specific embodiments of the present application in detail. The preferred embodiments of the present application are shown in the accompanying drawings. The role of the accompanying drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present application. However, it should not be construed as a limitation on the protection scope of the present application.

[0028] In the description of the present application, it should be understood that for the orientation description, such as the upper, lower, front, rear, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present application.

[0029] In the description of the present application, the meaning of "several" is one or more, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0030] In the description of the present application, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present application in combination with the specific content of the technical solution.

[0031] Currently, there are instruments on the market for measuring the air permeability of thin films (oxygen transmission rate testers). However, due to their limitations, the thickness of the material to be tested needs to be less than 3 mm. For some sanitary products with a composite multi-layer structure, their thickness may exceed 3 mm, making it impossible to use traditional instruments to detect the air permeability. Moreover, traditional thin film air permeability detection instruments have a complex structure and high cost, which also limits their popularity to a certain extent.

[0032] In response to this, the present application proposes a device for testing the air permeability of sanitary products. The sanitary product 700 to be tested is clamped by the first flange 110 and the second flange 210. Then, gas is introduced into the lower cup 200 to increase the air pressure inside the lower cup 200. By observing the change amplitude and change time of the air pressure inside the upper cup 100, the air permeability of the sanitary product 700 can be indirectly detected and analyzed. This testing device has no limitation on the thickness of the sanitary product 700, and has a simple structure and low cost, which is convenient for market popularization.

[0033] Refer to Figure 1 As shown in, the device for testing the air permeability of sanitary products in the embodiments of the present application includes an upper cup 100, a lower cup 200, a limiting mechanism, an air pump 300, and a first pressure gauge 400. Among them, the upper cup 100 and the lower cup 200 jointly form the main structure of the device for testing the air permeability of sanitary products. The sanitary product 700 is clamped between them, and the upper cup 100 and the lower cup 200 are separated by the sanitary product 700. The limiting mechanism is used to limit the position between the upper cup 100 and the lower cup 200, so that the two maintain the clamping of the sanitary product 700. The air pump 300 is used to output gas to the lower cup 200 to increase the air pressure inside the lower cup 200. The first pressure gauge 400 is used to detect the change of the air pressure inside the upper cup 100.

[0034] Specifically, one end of the upper cup 100 is closed, and the other end is open and provided with a first flange 110. One end of the lower cup 200 is closed, and the other end is open and provided with a second flange 210. During installation, the first flange 110 of the upper cup 100 and the second flange 210 of the lower cup 200 approach each other, so that the first flange 110 and the second flange 210 clamp the sanitary product 700 to be tested. The settings of the first flange 110 and the second flange 210 are to increase the contact area between the upper cup 100 and the lower cup 200, so as to clamp the sanitary product 700 more stably. It should be noted that the lower cup 200 is provided with an air inlet hole, which is connected to the air pump 300. Thus, the gas produced by the air pump 300 enters the lower cup 200 through this air inlet hole, increasing the air pressure inside the lower cup 200.

[0035] The first barometer 400 is connected to the upper cup body 100. The upper cup body 100 is provided with a hole for the probe of the first barometer 400 to penetrate, so that the air pressure inside the upper cup body 100 can be detected by the first barometer 400. After the air pump 300 is used to fill the lower cup body 200 with gas to increase the air pressure of the lower cup body 200, due to the pressure difference between the upper cup body 100 and the lower cup body 200, the gas in the lower cup body 200 will gradually penetrate into the upper cup body 100 through the sanitary product 700, thus causing a change in the air pressure in the upper cup body 100. The air permeability of the sanitary product can be analyzed by observing the change amplitude and change rate of the air pressure in the first barometer 400.

[0036] Furthermore, referring to Figure 2 , a sealing ring 500 is also provided between the first flange 110 and the second flange 210. The sanitary product 700 to be tested is arranged inside the sealing ring 500. The sealing ring 500 reduces the probability of gas flowing out from the gap between the first flange 110 and the second flange 210 to the outside, and improves the accuracy of the test.

[0037] Furthermore, the sanitary product air permeability testing device further includes an air valve 600. The upper cup body 100 is provided with an exhaust hole, and the air valve 600 is installed in the exhaust hole. The air valve 600 can be closed to prevent the gas in the upper cup body 100 from discharging from the exhaust hole, or can be opened to release the gas in the upper cup body 100. At the end of the test or when the air pressure in the upper cup body 100 is too high, the air valve 600 can be opened to timely discharge the high-pressure gas in the upper cup body 100, preventing damage to the device or causing accidents.

[0038] Furthermore, for the specific structure and working mode of the limiting mechanism, the present application proposes three possible embodiments. It should be noted, however, that the present invention is not limited to the described embodiments, and those skilled in the art can also make various equivalent variations or substitutions without departing from the spirit of the present application.

[0039] The first embodiment: The limiting mechanism is specifically a buckle. The end of the buckle has a barb structure, and the buckling is completed through the barb structure. The buckle is hinged to the first flange 110 and can be buckled to the second flange 210 through the barb structure; or, the buckle is hinged to the second flange 210 and can be buckled to the first flange 110 through the barb structure. Thus, the first flange 110 and the second flange 210 are fixed and limited by buckling, and the sanitary product to be tested is tightly clamped between the two.

[0040] Second Embodiment: The limiting mechanism includes an upper pressing seat, a lower pressing seat, and a driving member. The upper pressing seat abuts against the top surface of the upper cup body 100, the lower pressing seat abuts against the bottom surface of the lower cup body 200, and the driving member is a power output device that drives the upper pressing seat and the lower pressing seat to approach each other. Thus, through the external force output of the driving member, the upper cup body 100 and the lower cup body 200 are tightly pressed, so as to tightly clamp the sanitary product to be detected. Moreover, by adjusting the output distance and output force of the driving member, the distance and clamping force between the upper cup body 100 and the lower cup body 200 can be adjusted, so as to adapt to sanitary products of different thicknesses and different materials. The driving member can specifically adopt a hydraulic press, a cylinder, or an electric push rod.

[0041] Third Embodiment: The limiting mechanism is specifically a locking bolt. Both the first flange 110 and the second flange 210 are provided with mounting holes through which the locking bolt can pass. The locking bolt passes through the mounting holes of the first flange 110 and the second flange 210 to lock the two. Thus, when each locking bolt is tightened, the first flange 110 and the second flange 210 are locked, and the sanitary product to be detected is tightly clamped between the two. Moreover, by screwing the locking bolt, the distance and clamping force between the upper cup body 100 and the lower cup body 200 can be adjusted, so as to adapt to sanitary products of different thicknesses and different materials; the structure is simple and reliable, and no external power source is required.

[0042] Further, a base 220 is provided at the bottom of the lower cup body 200. The base 220 extends laterally compared to the lower cup body 200, so that its outer diameter is larger, which is used to increase the contact area with the ground and reduce the risk of the sanitary product air permeability testing device tipping over during the testing process.

[0043] Further, a second pressure gauge 310 is installed on the air pump 300. The second pressure gauge 310 is used to detect the output air pressure of the air pump 300, so as to be able to more precisely control the output air pressure of the air pump 300.

[0044] Further, in this sanitary product air permeability testing device, both the upper cup body 100 and the lower cup body 200 are cylindrical, so that the inner walls of the upper cup body 100 and the lower cup body 200 uniformly receive the pressure of the internal gas, avoiding local stress concentration and causing the cup body to be damaged.

[0045] Further, in this sanitary product air permeability testing device, both the upper cup body 100 and the lower cup body 200 are transparent parts, which is convenient for observing the situation inside the upper cup body 100 and the lower cup body 200. Thus, when the air pump 300 fills the lower cup body 200 with colored gas, the experimenter can directly observe through the naked eye the process of the gas passing through the sanitary product 700 from the lower cup body 200 into the upper cup body 100.

[0046] Next, the test procedure of this sanitary product air permeability testing device will be introduced:

[0047] S100. Cut the sanitary product 700 to be detected into a shape adapted to the first flange 110 and the second flange 210.

[0048] S200. Place the sanitary product 700 to be detected on the second flange 210 of the lower cup body 200.

[0049] S300. Dock the first flange 110 of the upper cup body 100 with the second flange 210 of the lower cup body 200, and the sanitary product 700 is clamped by the first flange 110 and the second flange 210.

[0050] S400. Mutually lock the upper cup body 100 and the lower cup body 200 through the limiting mechanism, and the sanitary product 700 is clamped.

[0051] S500. Record the reading on the first pressure gauge 400 before the test.

[0052] S600. Turn on the air pump 300, and the air pump 300 fills the lower cup body 200 with gas.

[0053] S700. Maintain the output air pressure of the air pump 300 and start timing.

[0054] S800. The gas in the lower cup body 200 passes through the sanitary product and enters the upper cup body 100. When the reading on the first pressure gauge 400 reaches the set pressure reading, stop timing.

[0055] S900. Evaluate the air permeability of the sanitary product 700 by analyzing the length of time for the air pressure in the upper cup body 100 to reach the set pressure.

[0056] In actual tests, the faster the reading on the first pressure gauge 400 reaches the set pressure reading, the better the air permeability of the corresponding sanitary product 700; conversely, the slower the reading on the first pressure gauge 400 reaches the set pressure reading, the worse the air permeability of the corresponding sanitary product 700.

[0057] Furthermore, two or more groups of sanitary product air permeability test devices can also be prepared to synchronously test different sanitary products 700. The air pump 300 inputs gas into each lower cup body 200 simultaneously and times. By comparing, the advantages and disadvantages of the air permeability of each sanitary product 700 can be understood.

[0058] The above has specifically described the preferred embodiments of the present application, but the present invention is not limited to the described embodiments. Those skilled in the art can also make various equivalent variations or substitutions without departing from the spirit of the present application, and these equivalent variations or substitutions are all included within the scope defined by the claims of the present application.

Claims

1. A testing device for the air permeability of sanitary products, characterized in that, Comprising: An upper cup body, one end of the upper cup body is closed, and the other end is open and provided with a first flange; A lower cup body, one end of the lower cup body is closed, and the other end is open and provided with a second flange. A sanitary product to be detected is clamped between the first flange and the second flange. The lower cup body is provided with an air inlet hole; A limiting mechanism that forces the first flange and the second flange to clamp the sanitary product to be detected; An air pump connected to the air inlet hole of the lower cup body for filling the lower cup body with gas; A first pressure gauge connected to the upper cup body for detecting the air pressure inside the upper cup body; Wherein, the air permeability of the sanitary product can be analyzed by observing the change of the air pressure in the first pressure gauge.

2. The sanitary product air permeability testing device according to claim 1, wherein: A sealing ring is further arranged between the first flange and the second flange, and the sanitary product to be detected is arranged inside the sealing ring.

3. The breathable performance testing device for sanitary products according to claim 1, wherein: The sanitary product air permeability testing device further comprises an air valve. The upper cup body is provided with an exhaust hole, and the air valve is installed in the exhaust hole.

4. The breathable performance testing device for sanitary products according to claim 1, wherein: The limiting mechanism is specifically a buckle, the buckle is hinged to the first flange and can be buckled to the second flange, or the buckle is hinged to the second flange and can be buckled to the first flange.

5. The sanitary product air permeability testing device according to claim 1, wherein: The limiting mechanism comprises an upper pressing seat, a lower pressing seat and a driving member. The upper pressing seat abuts against the top surface of the upper cup body, the lower pressing seat abuts against the bottom surface of the lower cup body, and the driving member drives the upper pressing seat and the lower pressing seat to approach each other.

6. The breathable performance testing device for sanitary products according to claim 1, characterized in that: The limiting mechanism is specifically a locking bolt. The first flange and the second flange are both provided with mounting holes through which the locking bolt can pass. The locking bolt passes through the mounting holes of the first flange and the second flange to lock the two.

7. The breathable performance testing device for sanitary products according to claim 1, wherein: The bottom of the lower cup body is provided with a base, and the base extends laterally compared with the lower cup body for increasing the contact area with the ground.

8. The sanitary product air permeability testing device according to claim 1, characterized in that: The air pump is installed with a second pressure gauge for detecting the output air pressure of the air pump.

9. The sanitary product air permeability testing device according to any one of claims 1 to 8, characterized in that: Both the upper cup body and the lower cup body are cylindrical.

10. The breathable performance testing device for sanitary products according to any one of claims 1 to 8, characterized in that: Both the upper cup body and the lower cup body are transparent members.

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