Detection system and detection method for microclimate in paper diaper

Abstract

The invention relates to the field of paper diaper production and detection, in particular to a paper diaper internal microclimate detection system, method and system, and the system comprises a detection carrier which is used for installing a to-be-detected paper diaper and simulating a wearing state, and comprises a support body and a flexible expansion and shrinkage film wrapping the support body; the plurality of detection belts are arranged on the detection carrier, comprise a plurality of detection points and are at least used for detecting temperature and humidity at different positions; the test gas assembly is used for quantitatively outputting gas with certain temperature and humidity; a test liquid assembly; the support body is provided with a discharge port, and the expansion and shrinkage film is provided with an opening for avoiding the discharge port; the transmission pipeline is connected with the test gas component, the test liquid component and the discharge port; and the control center is connected with the detection points, the test gas assembly and the test liquid assembly, and the hard support body is combined with the flexible expansion and shrinkage film, so that the detection carrier greatly improves the convenience and efficiency when being mounted on the paper diaper, and the detection carrier is more suitable for the detection requirement in production.

Description

Technical Field

[0001] The present invention relates to the field of diaper production detection, and more specifically, to a detection system and method for the internal microclimate of a diaper. Background Art

[0002] Diapers play an important role in modern childcare and maintenance. The popularity of diapers has greatly improved the comfort of infants and the elderly, provided important help for maintaining the health of infants and the elderly and preventing skin diseases, and greatly reduced the daily burden of caregivers, shortened the time required for cleaning, and made the family more harmonious. Existing diapers generally adopt a multi-layer structure, generally consisting of three parts: a surface layer, an absorbent core, and a bottom layer. By adjusting the materials, combinations, and structures of each layer, different functions can be achieved to meet the needs of different users at different times. However, as a multi-layer combination, the performance of diapers under different structures is difficult to obtain directly simply through the arrangement and combination of layers, or by selecting the inherent characteristics of the material. When different combinations are formed, new interactions are generated after different layers are superimposed on each other, and the lack of attention to this interaction in the prior art leads to a lack of basis for diapers in the process of performance optimization.

[0003] In the testing of existing diapers, the main focus is on the two performance indicators of water absorption and breathability, while other safety and comfort are generally judged by the material and softness of the material itself. The indicator of lightness is relatively simple, and is generally judged by the overall weight. There are various testing methods used in the testing of water absorption and breathability. Usually, the diaper is directly opened for water injection testing, but this just ignores the "microclimate" formed between the diaper and the skin when the diaper is worn, which is different from the external environment. Although the existing technology has conducted some research on microclimate, the existing "microclimate" testing cycle is long, the testing items are single, and it is impossible to truly apply the microclimate to production and effective structural improvements. Summary of the invention

[0004] The present invention aims to overcome at least one defect (shortcoming) of the above-mentioned prior art and provide a system and method for detecting the microclimate inside a diaper, so as to solve the problems of long detection cycle and single detection index in the production of existing diapers.

[0005] The technical solution adopted by the present invention is to provide a diaper internal microclimate detection system, including: a detection carrier, used to install the diaper to be tested and simulate the wearing state, including: a hard support body, and a flexible expansion and contraction membrane wrapping the support body; a plurality of detection belts, arranged on the detection carrier, including a plurality of detection points, at least for detecting the temperature and humidity at different positions; a test liquid component, used for quantitatively outputting liquid of a certain temperature; a discharge outlet is provided on the support body, and an open opening is provided on the expansion and contraction membrane to avoid the discharge outlet; a transmission pipeline, connecting the test liquid component and the discharge outlet; a control center, connected to the detection points and the test liquid component.

[0006] The detection carrier includes at least the upper half of the lower limbs; the detection strip includes: an annular detection belt and a strip detection belt, and is connected to the surface of the expansion and contraction membrane; the strip detection belt is arranged on the buttocks and / or crotch of the detection carrier; the annular detection belt is arranged between the thigh and buttocks of the detection carrier, and / or is arranged on the waist of the detection carrier.

[0007] The annular detection belt includes: temperature detection points formed by multiple temperature sensors and humidity detection points formed by multiple humidity sensors, and the temperature detection points and humidity detection points are evenly distributed on the annular detection belt; the annular detection belt also includes: liquid detection points formed by liquid sensors, and / or pressure detection points formed by pressure sensors.

[0008] The detection system also includes a test gas component; the test gas component includes: a mixing and distribution chamber, an atomizer, a liquid pump, an air pump, a thermostat and a dryer; the mixing chamber is connected to the atomizer and the dryer respectively; the thermostat is arranged in the mixing and distribution chamber; the liquid pump is connected to the atomizer; and the air pump is connected to the dryer.

[0009] The detection system also includes a closed box, in which the detection carrier is arranged; the closed box is provided with a humidity regulating device, a temperature regulating device and a negative pressure extraction component; the closed box is also provided with a rotating bracket for fixing the detection carrier and adjusting the posture of the detection carrier.

[0010] Furthermore, a method for detecting diapers is provided, comprising the following steps:

[0011] S1. Install the diaper to be tested on the detection carrier;

[0012] S2. A flexible filling with temperature is formed on the contact surface between the detection carrier and the diaper, so as to increase the temperature of the microclimate inside the diaper;

[0013] S3. Continuously detect the temperature and humidity of the microclimate and obtain the temperature and humidity changes before the test;

[0014] S4. Periodically inject a certain amount of warm liquid into the diaper through the detection carrier to obtain the temperature and humidity changes after the liquid is absorbed;

[0015] S5. After liquid is produced at the position outside the diaper cover on the carrier to be detected, stop injecting the warm liquid;

[0016] S6. Obtain the performance data of the diaper by changing the amount of heated liquid injected, temperature and humidity.

[0017] Before step S2, the method further includes the following steps:

[0018] S11. Place the detection carrier with the diaper installed in a constant temperature and humidity environment;

[0019] S12. Adjust the posture of the detection carrier so that the thigh portion of the detection carrier is arranged horizontally, and one side of the thigh portion is vertically facing downward.

[0020] Before step S3, the method further includes the step of: S21. continuously detecting the pressure data between the diaper and the thigh of the detection carrier;

[0021] S22. Applying pressurized dry gas to the diaper for a period of time by detecting the carrier;

[0022] S23. Obtain the tightness of the diaper through pressure changes.

[0023] Before step S3, the method further includes the following steps:

[0024] S24. A certain amount of gas with constant temperature and humidity is injected into the diaper through the detection carrier;

[0025] S25. Obtain the temperature and humidity changes of the microclimate in the diaper.

[0026] After step S5, the method further includes the following steps:

[0027] S51. Eliminate the flexible filling to quickly separate the diaper from the test carrier;

[0028] S52. Adjust the posture of the detection carrier so that the thigh of the detection carrier faces downward, and blow out pressurized gas to separate the diaper from the detection carrier.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows: by combining a hard support body with a flexible expansion and contraction membrane, the convenience and efficiency of the detection carrier in installing diapers are greatly improved, making it more suitable for production detection needs. The design of the expansion and contraction membrane can not only simulate human skin, but also use liquid filling to quickly create the temperature of the human body surface. And it can further use the heat dissipation rate of the filling liquid to cooperate with the detection and analysis to quickly obtain the temperature change of the diaper. The temperature adjustment is convenient and flexible, and the switching speed is fast. Its expansion and contraction advantages can quickly form a fit and separation with the diaper. At the same time, its own flexible material can fit the surface of the diaper when it expands, and the detection effect of the microclimate in the diaper is more accurate. The addition of gas can effectively test the air permeability of the diaper, as well as the self-regulation function that quickly responds to the change of the microclimate in the diaper, so as to accurately and quantitatively analyze the diaper more comprehensively. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the detection system in the present invention.

[0031] Figure 2 It is a schematic diagram of the expansion and contraction membrane after being filled with liquid, i.e. after being flexibly filled in the present invention.

[0032] Figure 3 It is a schematic diagram of the expansion and contraction membrane before being filled with liquid in the present invention.

[0033] Figure 4 It is a bottom view of the detection carrier in the present invention.

[0034] Figure 5 Flow chart of the detection method of the present invention.

[0035] Figure 6 This is a temperature curve corresponding to daily use of No. 1 diaper in Example 3 of the present invention.

[0036] Figure 7 This is a temperature curve corresponding to night use of No. 1 diaper in Example 3 of the present invention.

[0037] Figure 8 This is a humidity curve corresponding to daily use of No. 1 diaper in Example 3 of the present invention.

[0038] Fig. 9 This is a humidity curve corresponding to night use of No. 1 diaper in Example 3 of the present invention.

[0039] Fig.10 This is a temperature curve corresponding to daily use of a size 2 diaper in Example 3 of the present invention.

[0040] Fig.11 This is a temperature curve corresponding to night use of No. 2 diaper in Example 3 of the present invention.

[0041] Fig.12 This is a humidity curve corresponding to daily use of a size 2 diaper in Example 3 of the present invention.

[0042] Fig.13 This is a humidity curve corresponding to night use of No. 2 diaper in Example 3 of the present invention.

[0043] Fig.14 This is a temperature curve corresponding to daily use of No. 3 diapers in Example 3 of the present invention.

[0044] Fig.15 This is a temperature curve corresponding to night use of No. 3 diaper in Example 3 of the present invention.

[0045] Fig.16 This is a humidity curve corresponding to daily use of No. 3 diaper in Example 3 of the present invention.

[0046] Fig.17 This is a humidity curve corresponding to night use of No. 3 diaper in Example 3 of the present invention.

[0047] Fig.18 This is a temperature curve corresponding to daily use of a size 4 diaper in Example 3 of the present invention.

[0048] Fig.19 This is a temperature curve corresponding to night use of a size 4 diaper in Example 3 of the present invention.

[0049] Fig. 20 This is a humidity curve corresponding to daily use of a size 4 diaper in Example 3 of the present invention.

[0050] Fig.21 This is a humidity curve corresponding to night use of a size 4 diaper in Example 3 of the present invention.

[0051] Fig. 22 This is a temperature curve corresponding to daily use of size 5 diapers in Example 3 of the present invention.

[0052] Fig.23 This is a temperature curve corresponding to night use of a size 5 diaper in Example 3 of the present invention.

[0053] Fig.24 This is a humidity curve corresponding to daily use of a size 5 diaper in Example 3 of the present invention.

[0054] Fig.25 This is a humidity curve corresponding to night use of a size 5 diaper in Example 3 of the present invention.

[0055] Fig.26 This is a temperature curve corresponding to daily use of size 6 diapers in Example 3 of the present invention.

[0056] Fig. 27This is a temperature curve corresponding to night use of a size 6 diaper in Example 3 of the present invention.

[0057] Fig.28 This is a humidity curve corresponding to daily use of size 6 diapers in Example 3 of the present invention.

[0058] Fig.29 This is a humidity curve corresponding to night use of a size 6 diaper in Example 3 of the present invention.

[0059] Explanation of the reference numerals: detection carrier 100, support body 110, discharge port 111, expansion and contraction membrane 120, open port 121, detection belt 130, detection point 131, annular detection belt 132, strip detection belt 133, test gas assembly 200, test liquid assembly 300, control center 500, closed box 600, rotating bracket 700. DETAILED DESCRIPTION

[0060] The drawings of the present invention are only for illustrative purposes and should not be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted. Example 1

[0061] like Figure 1 As shown, this embodiment is a detection system for the microclimate inside a diaper, comprising: a detection carrier 100, used to install the diaper to be tested and simulate the wearing state, including: a hard support body 110, and a flexible expansion and contraction membrane 120 wrapping the support body 110; a plurality of detection belts 130, arranged on the detection carrier 100, including a plurality of detection points 131, at least for detecting the temperature and humidity at different positions; a test gas component 200, used for quantitatively outputting a gas with a certain temperature and humidity; a test liquid component 300, used for quantitatively outputting a liquid with a certain temperature; a discharge port 111 is provided on the support body 110, and an open port 121 is provided on the expansion and contraction membrane 120 to avoid the discharge port 111; a transmission pipeline, connecting the test gas component 200, the test liquid component 300 and the discharge port 111; a control center 500, connected to the detection point 131, the test gas component 200 and the test liquid component 300.

[0062] The support body 110 is used to form a basic lower limb shape of an infant or an adult. Figure 2As shown, the expansion and contraction membrane 120 is used in conjunction with the support body 110. After expansion, it forms a complete lower limb shape, and the flexible material simulates human skin; when it shrinks, it fits the surface of the support body 110, quickly reduces the fit between itself and the diaper, and separates the diaper from the detection carrier 100. The detection belt 130 is formed by arranging the detection points 131 on the detection carrier 100. The detection points 131 can be different sensor contacts. The test gas component 200 can produce a certain amount of gas that can adjust humidity and temperature, thereby acting on the detection of diapers. The test liquid component 300 can produce a certain amount of liquid that can adjust temperature. The discharge port 111 is located in the crotch of the detection carrier 100. The open mouth 121 is used to expose the discharge port 111 to avoid blocking the discharge port 111. The transmission pipeline is used for the transmission of test gas and test liquid. The detection carrier 100 is specifically a simulation doll.

[0063] The hard support body 110 cooperates with the flexible expansion and contraction membrane 120, which greatly improves the convenience and efficiency of the detection carrier 100 in installing diapers. The design of the expansion and contraction membrane 120 can not only simulate the skin of the human body, but also use liquid filling to quickly create the temperature of the human body surface. The traditional method of directly heating the detection carrier 100 not only has a slow heating speed, low efficiency, high energy consumption, but also uneven heat, and requires long-term maintenance, resulting in a complex structure of the detection carrier 100. In addition, the heat dissipation speed of the filling liquid can be used in conjunction with detection and analysis to quickly obtain the temperature change of the diaper. The temperature adjustment is convenient and flexible, and the switching speed is fast. Taking advantage of its expansion and contraction, it can also quickly form a fit and separation with the diaper. The expansion of the flexible material can fit the surface of the diaper, and the detection effect of the microclimate in the diaper is more accurate. The addition of gas can effectively test the air permeability of the diaper, and quickly respond to the self-regulation function after the microclimate in the diaper changes, so as to accurately and quantitatively analyze the diaper more comprehensively.

[0064] The test liquid components include a constant temperature water circulation system, a urination control system, and an artificial urine constant temperature system. The artificial urine constant temperature system can maintain a constant temperature according to the set temperature, and keep the artificial urine in it warm by means of a water bath. The urination control system can subject the liquid to centrifugal force, thereby outputting a fixed amount of liquid and keeping it consistent with the urination speed. The constant temperature water circulation system can pump water heated by the water bath into the doll, and control the water inlet speed through a flow regulator.

[0065] like Figure 3 and Figure 4As shown, the detection carrier 100 includes at least the upper half of the lower limbs; the detection strip includes: a ring-shaped detection belt 132 and a strip-shaped detection belt 133, and is connected to the surface of the expansion and contraction membrane 120; the strip-shaped detection belt 133 is arranged on the buttocks and / or crotch of the detection carrier 100; the ring-shaped detection belt 132 is arranged between the thigh and buttocks of the detection carrier 100, and / or is arranged on the waist of the detection carrier 100. The ring-shaped detection belt 132 is used to form a closed detection chain. The strip-shaped detection belt 133 is used to form a continuous state of collection.

[0066] Different from the design of a grid of collection points or an overall uniform distribution, the ring-shaped and strip-shaped detection belt 130 can effectively save detection points 131 on the one hand, thereby reducing the setting of sensors and lowering costs; on the other hand, it provides effective association between the detection points 131, thereby optimizing and streamlining data and reducing interference.

[0067] The annular detection belt 132 includes: a temperature detection point 131 formed by a plurality of temperature sensors and a humidity detection point 131 formed by a plurality of humidity sensors, and the temperature detection points 131 and humidity detection points are evenly distributed on the annular detection belt 132; the annular detection belt 132 also includes: a liquid detection point 131 formed by a liquid sensor, and / or a pressure detection point 131 formed by a pressure sensor. The temperature detection point 131 is used for temperature measurement in a small range. The humidity detection point 131 is used for humidity detection in a small range. The liquid detection point 131 is used to measure whether there is liquid contact. The pressure detection point 131 is used to detect pressure changes in a small range at the position.

[0068] The evenly distributed detection points 131 can more comprehensively reflect the changes in various parameters on the detection belt 130, and can accurately locate the differences in changes at different positions. The liquid detection points 131 set on the annular detection belt 132 are used to cooperate with the detection of the maximum liquid absorption on the diaper. The pressure detection points 131 are used to cooperate with the pressure distribution and weak points of the wearing tightening mouth on the diaper. The addition of liquid and pressure detection points 131 enriches the content of the detection, and can digitize the diaper parameters that were previously difficult to judge.

[0069] The test gas assembly 200 includes: a mixing and distributing chamber, an atomizer, a liquid pump, an air pump, a thermostat and a dryer; the mixing chamber is connected to the atomizer and the dryer respectively; the thermostat is arranged in the mixing and distributing chamber; the liquid pump is connected to the atomizer; and the air pump is connected to the dryer.

[0070] The mixing and distributing chamber is used to mix gases with different humidity, adjust the gas with stable humidity, and output it quantitatively. The atomizer is used to atomize liquid to obtain high-humidity gas. The liquid pump is used to supply liquid to the atomizer. The air pump is used to input the required gas. The dryer is used to obtain low-humidity gas to meet the needs of humidity regulation. The thermostat is used to adjust the temperature of the humidity-adjusted gas to a specified temperature.

[0071] Through mixing, temperature adjustment and quantitative output, on the one hand, it simulates real gas emissions, and on the other hand, it is used to quickly change the microenvironment in the diaper. Compared with the slight changes after the liquid is absorbed, changing the microenvironment through gas can more quickly and obviously reflect the self-regulation and adaptation of the microenvironment in the diaper, thereby quickly and accurately judging the comprehensive performance of the diaper.

[0072] The detection system also includes a closed box 600, and the detection carrier 100 is arranged in the closed box 600; the closed box 600 is provided with a humidity adjustment device, a temperature adjustment device and a negative pressure extraction component; the closed box 600 is also provided with a rotating bracket 700 for fixing the detection carrier 100 and adjusting the posture of the detection carrier 100.

[0073] The closed box 600 is used to form a stable environment outside the detection carrier 100. The humidity regulating device is used to form a constant and regulated humidity in the closed box 600. The temperature regulating device is used to form a constant and regulated temperature in the closed box 600. The negative pressure extraction component is used to cooperate with the test gas component 200 to form the diaper permeability detection and the rapid separation of the diaper from the detection carrier 100. The rotating bracket 700 is used to support the detection carrier 100 and quickly adjust the posture of the detection carrier 100.

[0074] The closed setting can greatly reduce external interference and reduce the instability and fluctuation of the detection. With the constant temperature and humidity environment, a clear difference can be formed between the external environment and the microclimate inside the diaper, so that the effect of the diaper on the microclimate is amplified and better collected. The setting of the rotating bracket 700 meets the needs of production automation detection, and can automatically and flexibly adjust the posture of the detection carrier 100 in a closed space, thereby simulating the postures of various diapers in actual use to measure data that conforms to reality. Example 2

[0075] like Figure 5As shown, the present embodiment is a method for detecting diapers, comprising the following steps: S1. installing the diaper to be detected on the detection carrier 100; S2. forming a flexible filling with temperature on the contact surface between the detection carrier 100 and the diaper, so as to form a warming microclimate inside the diaper; S3. continuously detecting the temperature and humidity of the microclimate, and obtaining the temperature and humidity changes before the test; S4. periodically injecting a certain amount of heated liquid into the diaper through the detection carrier 100, and obtaining the temperature and humidity changes after the liquid is absorbed; S5. after liquid is generated at the position outside the diaper cover on the detection carrier 100, stop injecting the heated liquid; S6. obtaining the performance data of the diaper through the changes in the amount of injected heated liquid, temperature and humidity.

[0076] Specifically, before the test, the following steps are included: retrieve or enter the BOM table corresponding to the current test diaper sample. The BOM table includes the characteristic data of each material layer of the diaper. During the injection of the heated liquid, the humidity and temperature values ​​at different time periods under different liquid volume environments are continuously obtained. The characteristic data include:

[0077] Diaper surface materials, including: fiber denier, supplier, batch, thickness, pore size of non-woven fabric, cost, etc.;

[0078] Core material, including: number of core layers, structure and layout of each layer, SAP content, cost, etc.

[0079] Base material, including: softness, breathability index, thickness, supplier, batch, thickness, cost, etc.

[0080] It can also include the three-dimensional leg circumference data of the diaper, including: the size of the leg circumference, the number of elastic threads in the leg circumference, the elasticity value and the cost, etc.

[0081] A database is established for each model of diapers, which includes the data in the BOM table and the temperature and humidity values ​​tested in different time periods.

[0082] After the test, the humidity and temperature values ​​of each diaper are judged to see whether they are within the comfort zone. The range of the comfort zone is: temperature value: T28-35℃, humidity value: H≤80%. If not, the sample database is marked as unqualified. The sample meets the standard only when all the temperature and humidity values ​​fall within the range.

[0083] Furthermore, the data in the comfort zone is further analyzed to calculate the discrete degree σ of the temperature value of each sensor of the corresponding sample and the fluctuation value R of the humidity of each sensor. In this embodiment, the extreme difference formula is used for calculation.

[0084] The discrete degree σ≤1 is preset, the maximum value of the fluctuation value R is less than 35, and the minimum value (usually the fluctuation value of the abdominal sensor) is less than 10. According to the above-set conditions, the diapers that meet the requirements are marked as samples with a healthy microclimate. When two or more samples with a healthy microclimate are compared, their respective costs are further calculated, and the cost is also taken into consideration while designing the sample quality. Judging from the discrete degree and fluctuation value, technical support is provided for product research and development. At the same time, the healthier the microclimate, the lower the possibility of skin problems when wearing it, and the higher the comfort. The smaller the discrete value, the smaller the temperature change and the better the wearing comfort. The smaller the fluctuation value, the faster the diaper absorbs.

[0085] The flexible filling is a part of the detection carrier 100, and is formed by its own volume expansion. The flexible filling forms a flexible support, thereby simulating the contact between the diaper and the skin in actual use, so as to more realistically establish a simulated microclimate simulation and obtain data and results that are more in line with actual use. On the other hand, the flexible filling quickly eliminates the gap between the detection carrier 100 and the diaper before filling, so that the volume of the detection carrier 100 before filling can be relatively smaller, so that it is easier to wear, and the efficiency and speed of installation are improved. The flexible filling has temperature, and during the filling process, the microclimate between the detection carrier 100 and the diaper is rapidly heated up and a stable temperature is provided for a certain period of time. The use of flexible filling to create a temperature environment for the detection carrier 100 not only heats up quickly, but also effectively saves energy, changing the traditional way of maintaining the overall heating of the detection carrier 100 for a long time. Not only is the temperature uniform, but the natural cooling of the flexible filling can also highlight the effect between the microenvironment through the diaper and the external environment. Specifically, the temperature drop rate of the flexible filling can reflect the thermal insulation and breathability of the diaper. For example, by detecting the temperature drop rate of the microenvironment, diapers with faster temperature drop rates are more suitable for the needs of breathability and coolness in summer.

[0086] The heated liquid is used to simulate urine. Periodic input specifically refers to the injection of liquid at a certain time interval. The changes in humidity and temperature after the liquid is injected can intuitively reflect the changes in the microclimate after the diaper absorbs urine during use. The amount of heated liquid injected ranges from more to less, and the amount injected each time is 50ml to 500ml.

[0087] The method before step S2 also includes the following steps: S11. placing the detection carrier 100 with the diaper installed in a constant temperature and humidity environment; S12. adjusting the posture of the detection carrier 100 so that the thigh part of the detection carrier 100 is horizontally arranged and one side of the thigh part is vertically facing downward.

[0088] Placing the diaper in a constant temperature and humidity environment helps eliminate external interference and creates an external state that is very different from the microclimate, so as to understand the effects of diapers under different internal and external environments. The posture is further limited by the sideways posture, which is the most likely to leak, thereby shortening the detection time and obtaining the absorption capacity in an unfavorable posture.

[0089] Before step S3, the method also includes the following steps: S21. Continuously detecting the pressure data between the diaper and the thigh of the detection carrier 100; S22. Applying pressurized dry gas to the diaper for a period of time through the detection carrier 100; S23. Obtaining the tightness of the diaper through pressure changes.

[0090] By detecting the pressure data, on the one hand, it can quickly determine whether the diaper is installed correctly, on the other hand, it can also obtain the tightness of the diaper edge after wearing, and analyze the weak points that are prone to leakage after wearing. With the pressure drying gas, it can better find the possible leakage position of the liquid and the tightening force on the waist or legs.

[0091] Before step S3, the method further includes the following steps: S24. injecting a certain amount of gas with constant temperature and humidity into the diaper through the detection carrier 100; S25. obtaining the temperature and humidity changes of the microclimate in the diaper.

[0092] The temperature and humidity of the microenvironment before injection are collected. Before injecting the test liquid and after drying the gas, a certain amount of constant temperature and humidity gas is input at a certain time interval. The amount of gas injected each time is 50ml to 300ml to simulate the gas release in the human intestine. Under the same external environment, the temperature and humidity of the external environment are lower than the state when the constant temperature and humidity gas is injected into the diaper microclimate. The time required for the temperature and humidity of the diaper to drop to the preset target value after the constant temperature and humidity gas is injected is recorded. The air permeability, heat dissipation effect and degree of external influence of the diaper are judged by time.

[0093] After step S5, the method further includes the following steps: S51. removing the flexible filling to quickly separate the diaper from the detection carrier 100; S52. adjusting the posture of the detection carrier 100 so that the thigh of the detection carrier 100 faces downward, and blowing out pressurized gas to separate the diaper from the detection carrier 100.

[0094] Eliminating the flexible filling may specifically release the filling, such as liquid. By reducing the volume, the diaper and the detection carrier 100 are quickly separated. After eliminating the tension, adjusting the posture, and then separating the diaper by gas helps to further realize the automation of detection, thereby meeting production needs. Example 3

[0095] This embodiment is a diaper detection method, based on a detection system, comprising the following steps:

[0096] The diaper to be tested is mounted on the test carrier 100; the test system includes: the test carrier 100 is used to mount the diaper to be tested and simulate the wearing state, including: a hard support body 110, and a flexible expansion and contraction film 120 wrapping the support body 110. A flexible filling with temperature is formed on the contact surface between the test carrier 100 and the diaper to form a warming microclimate inside the diaper; specifically, the expansion and contraction film 120 is filled with a temperature liquid.

[0097] Continuously detect the temperature and humidity of the microclimate to obtain the temperature and humidity changes before the test; specifically, in the detection system, detection and data collection are performed through multiple detection belts 130 set on the detection carrier 100, and the detection belt 130 includes multiple detection points 131, and specific detection is performed through the detection points 131 with different detection functions; the data collected by the detection points 131 are transmitted to the control center 500 of the detection system.

[0098] A certain amount of warm liquid is periodically injected into the diaper through the detection carrier 100 to obtain the temperature and humidity changes after the liquid is absorbed; specifically, the liquid is transmitted through the test liquid component 300 in the detection system for quantitatively outputting liquid at a certain temperature. A discharge port 111 is provided on the support body 110, and an open port 121 is provided on the expansion and contraction membrane 120 to avoid the discharge port 111. Through the transmission pipeline connecting the test gas component 200, the test liquid component 300 and the discharge port 111. Under the control of the control center 500, the liquid is injected under the action of the test liquid component 300, the discharge port 111, the open port 121 and the transmission pipeline.

[0099] After liquid is generated at the position outside the diaper cover on the carrier 100 to be detected, the injection of warm liquid is stopped; specifically, detection is performed through the detection point 131 for liquid detection set at the edge of the thigh of the diaper, and the injection step is stopped by the signal triggered by the liquid. The performance data of the diaper is obtained by the changes in the amount of warm liquid injected, temperature and humidity. The control center 500 analyzes the data to obtain effective analysis data.

[0100] The detection carrier 100 is the upper half of the lower limbs of the simulated doll; the detection strip includes: an annular detection belt 132 and a strip detection belt 133, and is connected to the surface of the expansion and contraction film 120; the strip detection belt 133 is arranged on the buttocks and crotch of the detection carrier 100; the annular detection belt 132 is arranged between the thigh and buttocks of the detection carrier 100 and on the waist of the detection carrier 100. The annular detection belt 132 includes: a temperature detection point 131 formed by a plurality of temperature sensors and a humidity detection point 131 formed by a plurality of humidity sensors, and the temperature detection point 131 and the humidity monitoring point are evenly distributed on the annular detection belt 132; the annular detection belt 132 also includes: a liquid detection point 131 formed by a liquid sensor, and a pressure detection point 131 formed by a pressure sensor.

[0101] The expansion membrane has an internal filling space, and the internal filling space is used to fill the fluid. The expansion membrane is made of silicone material, at least the exposed surface is smooth, and can withstand a certain temperature. In this embodiment, the expansion membrane 120 expands by filling with liquid to form a certain thickness increase on the surface of the support body 110, and the increased thickness is 2mm to 6mm. The detection belt 130 is formed by a plurality of detection points 131 arranged in a row. The detection point 131 is specifically a collection point of the sensor, and the detection point 131 includes at least a detection head of a humidity sensor for collecting humidity and a detection head of a temperature sensor for collecting temperature. The detection point 131 is partially attached to the surface of the expansion membrane 120, and partially attached between the expansion membrane 120 and the support body 110.

[0102] The data transmission line of the detection point 131 extends through the interior of the support body 110 to the external collector. The test liquid component 300 outputs physiological saline, and the temperature of the physiological saline is 30°C to 45°C. The test gas component 200 mainly outputs gas with a humidity of 15% to 25% and a temperature of 15°C to 35°C, and a relative humidity of 70% to 90% and a temperature of 30°C to 45°C. The discharge port 111 includes a front discharge port 111 and a rear discharge port 111. The front discharge port 111 corresponds to the urine discharge port and is connected to the test liquid component 300. The rear discharge port 111 corresponds to the defecation port and is connected to the test gas component 200.

[0103] The temperature and humidity of the microclimate are continuously detected. By setting a certain time interval, the temperature and humidity are continuously collected, and the time, as well as the temperature and humidity corresponding to the time, are recorded to form the detection data. The detection starts before the flexible filling and ends at the end of the detection. The flexible filling is specifically a liquid-filled filling piece. In this embodiment, the constant temperature water circulation system in the test liquid component injects a liquid of about 37°C into the simulation doll. The temperature of the liquid injected by the expansion and contraction membrane is 38°C ± 2°C. The temperature data and humidity data are transmitted to the control center, that is, the analysis computer. When the test liquid component is injected with liquid, a uniform injection rate is used, and the injection volume is 80ml at a time, which is repeated 3 times, each time at a certain interval. In actual detection, by wearing simulation dolls with different structures, materials and performance diapers, the difference between day and night can be simulated. On the other hand, the posture of the simulation doll can be adjusted to stand or lie on its side to simulate the real posture of use. The amount of liquid can be calculated by the injection volume during injection, and a flow meter can be further set to obtain the actual input amount. The edge of the diaper is provided with a liquid detection device, which can be a liquid test paper attached after wearing, or a liquid detection head deliberately exposed outside the edge of the diaper when worn. As a preferred design, the liquid detection head is more suitable for the needs of production testing, and the signal can be used as the end signal of liquid injection and detection collection. The liquid detection head is set on the thigh.

[0104] The annular detection belt 132 can cooperate with the diaper to continuously detect the elastic tightening openings on the waist and thighs. The annular detection belt 132 includes a first annular detection belt 132 corresponding to the waist position of the diaper, and a second annular detection belt 132 and a third annular detection belt 132 corresponding to the two thighs respectively. The setting of the annular detection belt 132 should be kept at a distance of 1cm to 2cm from the edge of the diaper. The strip detection belt 133 includes a first strip detection belt 133 and a second strip detection belt 133. The first strip detection belt 133 is connected to the first annular detection on the front side of the detection carrier 100, and is wrapped around the crotch and buttocks to the back side of the detection carrier 100, and is connected to the first annular detection on the back side of the detection carrier 100. The second strip detection belt 133 is located between the two rows of outlets 111 of the detection carrier 100, and its two ends are respectively connected to the second annular detection belt 132 and the third annular detection belt 132. The first strip detection belt 133 and the second strip detection belt 133 intersect between the front outlet 111 and the rear outlet 111 to form a "cross". The detection carrier 100 is the upper half of the lower limbs of an infant or an adult. On the premise that the influence range of the diaper is completely reserved, the volume of the detection carrier 100 is reduced, and an external closed environment can be more conveniently set up, which is also conducive to the arrangement and adjustment of various pipelines.

[0105] The number of temperature detection points 131 is 3 to 8, and the temperature change at the point can be continuously collected. The number of humidity detection points 131 is 3 to 8, and the temperature change at the point can be continuously collected. The distance between two adjacent detection points 131 is equal. The number of liquid detection points 131 is 3 to 8, and a signal is sent to the control center 500 after contacting the liquid. The pressure detection point 131 is set between the expansion and contraction membrane 120 and the support body 110. The liquid detection point 131 is set on the surface of the expansion and contraction membrane 120.

[0106] A flexible filling with temperature is formed on the contact surface between the detection carrier 100 and the diaper to form a warm microclimate inside the diaper before the temperature rises. It also includes placing the detection carrier 100 with the diaper installed in a constant temperature and humidity environment, adjusting the posture of the detection carrier 100 so that the thigh part of the detection carrier 100 is horizontally set, and the thigh part on one side is vertically facing downward.

[0107] The detection system also includes a closed box 600, which places the detection carrier 100 installed with the diaper in a constant temperature and humidity environment, specifically, the detection carrier 100 is set in the closed box 600; the closed box 600 is provided with a humidity regulating device, a temperature regulating device and a negative pressure extraction component; the closed box 600 is also provided with a rotating bracket 700, which is used to fix the detection carrier 100 and adjust the posture of the detection carrier 100, thereby realizing the steps: adjusting the posture of the detection carrier 100 so that the thigh part of the detection carrier 100 is horizontally arranged, and one side of the thigh part is vertically facing downward. Specifically, the constant temperature and humidity environment can be 25±2℃, and the relative humidity is 20%±5%.

[0108] The main body of the closed box 600 is a transparent rectangular box. An air vent is provided on one side of the box, and a temperature sensor and a humidity sensor are provided inside the box. The air vent is connected to an external humidifier and dryer. A heating component and a cooling component are also provided on the box. A pipeline interface is provided on the side opposite to the air vent for external pipelines to enter the closed box 600.

[0109] Continuously detect the temperature and humidity of the microclimate, and obtain the temperature and humidity changes before the test, and also include: continuously detecting the pressure data between the diaper and the thigh of the detection carrier 100, applying pressurized dry gas to the diaper for a period of time through the detection carrier 100, and then injecting a certain amount of temperature and humidity-controlled gas into the diaper through the detection carrier 100 to obtain the temperature and humidity changes of the microclimate in the diaper.

[0110] The detection system includes: a test gas component 200, which is used to quantitatively output gas of a certain temperature and humidity. The annular detection belt 132 also includes: a liquid detection point 131 formed by a liquid sensor, and a pressure detection point 131 formed by a pressure sensor. The pressure data is specifically the pressure values ​​of multiple pressure points distributed in an annular manner. The tightness of the diaper is obtained by comparing the pressure values ​​before applying the dry gas and during the application of the gas. The pressure data between the diaper and the thigh of the detection carrier 100 is continuously detected through the pressure detection point 131. The test gas component 200 is used to apply pressurized dry gas to the detection carrier 100 in the diaper for a period of time, so as to obtain the tightness of the diaper through pressure changes.

[0111] The test gas assembly 200 in the detection system includes: a mixing and distributing chamber, an atomizer, a liquid pump, an air pump, a thermostat and a dryer; the mixing chamber is connected to the atomizer and the dryer respectively; the thermostat is arranged in the mixing and distributing chamber; the liquid pump is connected to the atomizer; the air pump is connected to the dryer. The test gas assembly 200 is used to inject a certain amount of temperature and humidity-controlled gas into the diaper through the detection carrier 100, so as to obtain the temperature and humidity changes of the microclimate in the diaper.

[0112] The test gas assembly 200 can be arranged outside the detection carrier 100, or the mixing and distribution chamber can be retained in the detection carrier 100. The mixing and distribution chamber includes a mixing chamber, a syringe, a control valve and a delivery pipe. High-humidity gas and low-humidity gas are quantitatively input into the mixing chamber. A humidity detector is provided in the mixing chamber. When the mixed gas reaches the specified humidity, the temperature is adjusted by the thermostat. After adjusting to the specified temperature, it is quantitatively drawn out by the syringe, and the control valve is controlled to switch the pipeline to deliver a quantitative amount of gas to the microenvironment of the diaper through the discharge port 111.

[0113] After liquid is generated at the position outside the diaper cover on the detection carrier 100, after the injection of the warm liquid is stopped, it also includes: eliminating the flexible filling to quickly separate the diaper from the detection carrier 100, adjusting the posture of the detection carrier 100 so that the thigh part of the detection carrier 100 faces downward, and separating the diaper from the detection carrier 100 by blowing out pressurized gas.

[0114] In the detection system, the liquid filled in the expansion membrane is quickly released to eliminate the flexible filling, so that the diaper is quickly separated from the detection carrier 100. Then the rotating bracket 700 is controlled to adjust the posture of the detection carrier 100 so that the thigh of the detection carrier 100 faces downward, and finally the test gas component 200 is used to blow out the pressure gas to separate the diaper from the detection carrier 100.

[0115] The specific data obtained in step S6 are shown in the figure. In this embodiment, 6 different diapers are tested, marked as No. 1 diaper, No. 2 diaper, No. 3 diaper, No. 4 diaper, No. 5 diaper, and No. 6 diaper. Wherein T represents temperature, T1 corresponds to the average value of the temperature detection point of the detection carrier located at the waist, T2 corresponds to the average value of the temperature detection point of the detection carrier located at the crotch, and T3 corresponds to the average value of the temperature detection point of the detection carrier located at the buttocks. H represents humidity, H1 corresponds to the average value of the humidity detection point of the detection carrier located at the waist, H2 corresponds to the humidity detection point of the detection carrier located at the crotch, and H3 corresponds to the humidity detection point of the detection carrier located at the buttocks. In the sealed box, the set temperature is set to 25°C and 70% humidity. Daily use corresponds to an upright posture; night use corresponds to a side-lying posture, which is achieved by adjusting the posture of the detection carrier 100. Assuming the qualified range is a temperature value of 28°C to 35°C and a humidity value of H≤80%, all diapers except No. 5 diaper are qualified.

[0116] Reanalyze the remaining diapers No. 1, No. 2, No. 3, No. 4, and No. 6, assuming that the qualified discrete degree σ≤0.5 and the maximum value of the fluctuation value R is less than 35.

[0117] Temperature discrete data is shown in Table 1:

[0118] Humidity discrete data is shown in Table 2:

[0119] It can be seen that No. 3 diapers can be used as daily diapers or night diapers, No. 4 diapers are suitable for night diapers, and No. 6 diapers are suitable for daily diapers. No. 1 and No. 2 diapers are out of the scope and are not suitable products.

[0120] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A system for detecting the microclimate inside a diaper, characterized in that: include: The detection carrier is used to install the diaper to be tested and simulate the wearing state, including: a hard support body and a flexible expansion and contraction film wrapping the support body; A plurality of detection belts are arranged on the detection carrier, including a plurality of detection points, and are used to detect the temperature and humidity at different positions at least; a test liquid component is used to quantitatively output a liquid at a certain temperature; The support body is provided with a discharge port, and the expansion and contraction membrane is provided with an opening to avoid the discharge port; A transfer pipe connecting the test liquid assembly and the discharge port; A control center connected to the detection points and test liquid components.

2. A diaper internal microclimate detection system according to claim 1, characterized in that: The detection carrier includes at least the upper half of the lower limb; The detection strip includes: a ring-shaped detection strip and a strip-shaped detection strip, and is connected to the surface of the expansion and contraction film; The strip detection belt is arranged on the buttocks and / or crotch of the detection carrier; The annular detection belt is arranged between the thigh and buttocks of the detection carrier, and / or arranged on the waist of the detection carrier.

3. A diaper internal microclimate detection system according to claim 2, characterized in that: The annular detection belt comprises: temperature detection points formed by a plurality of temperature sensors and humidity detection points formed by a plurality of humidity sensors, and the temperature detection points and humidity detection points are evenly distributed on the annular detection belt; The annular detection belt also includes: Liquid detection points formed by liquid sensors, and / or pressure detection points formed by pressure sensors.

4. A diaper internal microclimate detection system according to any one of claims 1 to 3, characterized in that: Also included is a test gas assembly; the test gas assembly includes: a mixing and dispensing chamber, an atomizer, a liquid pump, an air pump, a thermostat and a dryer; The mixing chamber is connected to the atomizer and the dryer respectively; The thermostat is arranged in the mixing and distributing chamber; The liquid pump is connected to the atomizer; The air pump is connected to the dryer.

5. A diaper internal microclimate detection system according to any one of claims 1 to 3, characterized in that: It also includes a closed box, in which the detection carrier is arranged; The closed box is provided with a humidity regulating device, a temperature regulating device and a negative pressure extraction component; The closed box is also provided with a rotating bracket for fixing the detection carrier and adjusting the posture of the detection carrier.

6. A method for detecting diapers, characterized in that: The following steps are involved: S1. Install the diaper to be tested on the detection carrier; S2. A flexible filling with temperature is formed on the contact surface between the detection carrier and the diaper, so as to increase the temperature of the microclimate inside the diaper; S3. Continuously detect the temperature and humidity of the microclimate and obtain the temperature and humidity changes before the test; S4. Periodically inject a certain amount of warm liquid into the diaper through the detection carrier to obtain the temperature and humidity changes after the liquid is absorbed; S5. After liquid is produced at the position outside the diaper cover on the carrier to be detected, stop injecting the warm liquid; S6. Obtain the performance data of the diaper by changing the amount of heated liquid injected, temperature and humidity.

7. A diaper detection method according to claim 6, characterized in that: Before step S2, the method further includes the following steps: S11. Place the detection carrier with the diaper installed in a constant temperature and humidity environment; S12. Adjust the posture of the detection carrier so that the thigh portion of the detection carrier is arranged horizontally, and one side of the thigh portion is vertically facing downward.

8. A diaper detection method according to claim 6, characterized in that: Before step S3, the method further includes the following steps: S21. Continuously detect the pressure data between the diaper and the thigh of the detection carrier; S22. Applying pressurized dry gas to the diaper for a period of time by detecting the carrier; S23. Obtain the tightness of the diaper through pressure changes.

9. A diaper detection method according to claim 6, characterized in that: Before step S3, the method further includes the following steps: S24. A certain amount of gas with constant temperature and humidity is injected into the diaper through the detection carrier; S25. Obtain the temperature and humidity changes of the microclimate in the diaper.

10. A diaper detection method according to claim 6, characterized in that: After step S5, the method further includes the following steps: S51. Eliminate the flexible filling to quickly separate the diaper from the test carrier; S52. Adjust the posture of the detection carrier so that the thigh part of the detection carrier faces downward, and separate the diaper from the detection carrier by blowing out pressurized gas.

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