Sweat detection patch production material air permeability detection device and production process

Abstract

The application relates to the technical field of air permeability detection, and discloses a material air permeability detection device for sweat detection patch production and a production process, wherein the material air permeability detection device for sweat detection patch production comprises a detection box, a fixing piece is arranged at the top of the detection box, an air inlet assembly is arranged in the detection box, the air inlet assembly is used for introducing detection gas, the air inlet assembly comprises a gas guide cylinder arranged in the detection box, a plurality of support pipes are arranged in a ring shape in the top view of the gas guide cylinder, a plurality of gas guide holes are arranged on the side surface of each support pipe, and the support pipes comprise an inner ring support pipe group and an outer ring support pipe group. The air permeability detection is synchronously carried out in the process that the material experiences complete dynamic bending circulation from upward convexity to horizontalness and then to downward concavity through the driving support structure, so that the performance data of the material in different deformation states are captured, and the final detection result can truly reflect the air permeability of the product in a real use scenario.

Description

Technical Field

[0001] This invention relates to the field of breathability testing technology, and in particular to a breathability testing device and manufacturing process for materials used in the production of sweat testing patches. Background Technology

[0002] Sweat detection patches are widely used in the field of health monitoring. The breathability of their materials directly affects the comfort of use and the accuracy of detection. At present, the industry mainly uses static breathability testing devices to evaluate the quality by measuring the performance of gas penetration through the material under fixed conditions. This type of method provides a basis for material selection and production process control and is a routine testing link in the existing production process.

[0003] However, it should be noted that traditional devices are mostly tested in a static, flat state, which cannot simulate the dynamic bending state of sweat patches caused by skin deformation (such as joint bending and muscle contraction) during actual application. This makes it difficult for the test data to truly reflect the changes in the breathability of the material under real use conditions. Secondly, existing technologies usually adopt single-point or sequential testing modes, with limited and unevenly distributed test points, which can easily create data blind spots and make it difficult to comprehensively assess the breathability uniformity of the material in different areas. At the same time, these methods lack effective protection mechanisms for the material during deformation. During testing, mechanical stress concentration can easily cause the material to wrinkle or be damaged, thus affecting the accuracy of the readings.

[0004] Therefore, there is an urgent need to develop an air permeability testing device that can simulate dynamic bending, achieve multi-point synchronous detection, and has material protection functions, so as to improve the accuracy and reliability of the test data. Summary of the Invention

[0005] Given that existing technologies cannot accurately reflect material performance under dynamic usage conditions through static single-point testing, a breathability testing device for materials used in the production of sweat testing patches is proposed.

[0006] Its purpose is to achieve multi-point synchronous air permeability testing of materials under dynamic bending conditions.

[0007] The technical solution of the present invention is a breathability testing device for materials used in the production of sweat detection patches, including a testing box, a fixing member installed on the top of the testing box, the sweat detection patch material being clamped inside the fixing member, and a ventilation component installed inside the testing box for introducing detection gas.

[0008] The ventilation assembly includes an air guide cylinder installed inside the detection box. From a top view, the air guide cylinder is provided with circumferentially distributed support ducts. The support ducts have several air inlets on their circumferential sides. The support ducts include an inner ring support tube group and an outer ring support tube group arranged in an inner and outer ring structure. An air delivery tube is slidably provided on the circumferential side of the support ducts. The air delivery tube extends to the top of the air guide cylinder. A spiral guide plate is rotatably provided inside the air delivery tube. A lifting assembly is installed inside the air guide cylinder.

[0009] The lifting assembly includes connectors that are fixedly arranged in a ring array on the inner ring support tube group and the outer ring support tube group, respectively. Several support rods are fixedly arranged on the top of the connectors, and buffers are installed on the top of the support rods.

[0010] Furthermore, a sealing cylinder is fixedly installed on the periphery of the air guide cylinder, and a connecting pipe connected to the interior of the air guide cylinder is fixedly installed at the bottom of the air guide cylinder. The connecting pipe is connected to an external ventilation device. A limiting ring is fixedly installed on the periphery of the air guide cylinder, and limiting plates are symmetrically fixedly installed on the top of the limiting ring. One of the limiting plates has a drive gear, a rack one, and a rack two fixedly installed inside. The rack one and rack two are located on both sides of the drive gear, and both rack one and rack two mesh with the drive gear. A sliding plate one and a sliding plate two are slidably installed on one side of the other limiting plate.

[0011] Furthermore, a U-shaped frame is fixedly installed on one side of the limiting plate located at the rack. A reciprocating screw is rotatably installed inside the U-shaped frame. The bottom end of the reciprocating screw passes through to the bottom of the U-shaped frame and is fixedly connected to a drive motor. A slider is fixedly installed on one side of the rack, and the slider is threadedly engaged with the reciprocating screw.

[0012] Furthermore, both the inner and outer ring support pipe assemblies are fixedly provided with connecting parts on their peripheral surfaces. Each connecting part includes a positioning ring that is fixedly connected to the peripheral surface of the gas transmission duct, and the positioning rings are connected to each other by a connecting rod.

[0013] Furthermore, the support rod is fixedly installed on the top of the corresponding positioning ring, and several support rods located on the circumferential side of the corresponding gas transmission duct are arranged in a ring array on the surface of each positioning ring.

[0014] Furthermore, a fixing ring is fixedly provided on the peripheral side of the support rod, and a threaded rod is fixedly provided on the top of the fixing ring;

[0015] The buffer includes several disc springs stacked on top of the support rod. Ear plates are fixedly provided on the peripheral side of each disc spring. The ear plates are sleeved on the threaded rod. A positioning disk is fixedly provided on the top of the disc spring at the highest position. Several elastic inclined plates are arranged in a circular array on the top of the positioning disk. Rubber heads are fixedly provided on the top of each elastic inclined plate. The rubber heads are combined to form a raised arc shape.

[0016] Furthermore, two L-shaped moving rods are symmetrically fixedly arranged on the top of the connector of the inner ring support tube assembly, and two L-shaped moving rods are symmetrically fixedly arranged on the top of the connector of the outer ring support tube assembly, with the first L-shaped moving rod being lower than the second L-shaped moving rod.

[0017] The rack one and the sliding plate one are fixedly connected to the corresponding L-shaped moving rod one, and the rack two and the sliding plate two are fixedly connected to the corresponding L-shaped moving rod two.

[0018] Furthermore, the top of the testing box is provided with a vent, a monitoring and display system is installed on the top of the testing box, and a support frame is fixedly installed inside the testing box, with the support frame and the air guide cylinder being fixedly connected.

[0019] Another objective of this invention is to provide a manufacturing process for materials used in the production of sweat detection patches. The purpose of this process is to precisely construct a multi-layered functional structure that can stably and effectively collect and transmit sweat and react specifically with the analyte, while ensuring biocompatibility and safety.

[0020] To achieve the above objectives, the present invention provides the following technical solution, comprising the following steps:

[0021] Base film forming: The polymer is melt-extruded and then cooled and shaped by casting or blow molding to form a waterproof film or release film;

[0022] Adhesive preparation: Medical adhesive and additives are mixed to form an adhesive solution, which is then precisely coated onto a base film and dried or UV cured to form an adhesive layer;

[0023] Hydrophilic layer preparation: Polymer fibers are spun into a web, then reinforced by hot rolling or hydroentangling to form a nonwoven fabric. Subsequently, it is impregnated with a hydrophilic agent and dried to give it the ability to absorb and wick away sweat. Finally, the nonwoven fabric is clamped to the top of the test chamber using fasteners, and the ventilation component is used to introduce test gas to test its air permeability under dynamic working conditions.

[0024] Sensing layer manufacturing: Bio-enzymes, chemical indicators and polymer matrix are mixed to form bio-sensing ink, which is deposited on the substrate by precision dotting or screen printing technology, and then gently dried to maintain bioactivity. After production, it is assembled into the final detection patch through subsequent processes such as lamination and die cutting.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. This invention can highly simulate the state of skin deformation that occurs when sweat patches are used in actual applications. Through precise mechanical transmission, it drives the support structure to make the material undergo a complete dynamic bending cycle from convex to horizontal and then to concave. During this process, breathability is tested simultaneously, thereby capturing the performance data of the material under different deformation states. This allows the final test results to truly reflect the breathability performance of the product in real-world usage scenarios, significantly improving the practical value and guiding significance of the test data.

[0027] 2. This invention enables simultaneous and efficient detection of sweat detection patch materials from all directions and at multiple points. Its annularly distributed array of gas delivery tubes can deliver detection gas to multiple areas at the center and edge of the material at one time, and the rotating airflow ensures uniform force at each point. This changes the traditional single-point sequential detection mode, which not only greatly improves detection efficiency, but also effectively avoids data blind spots caused by too few or unevenly distributed detection points, thus ensuring the comprehensiveness and accuracy of the evaluation.

[0028] 3. This invention provides excellent stability and material protection for the testing process through a multi-level buffer design. The top buffer component combines the macroscopic buffering of the disc spring with the microscopic self-adaptation of the elastic inclined plate, which can evenly distribute stress and avoid accidental wrinkling or damage to the material during bending. This ensures that the material is always in a soft and stable stress state throughout the entire test, thereby preventing reading distortion caused by mechanical impact damage to the sweat detection patch material and ensuring the continuity and high reliability of the test data. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the overall internal structure of the present invention;

[0031] Figure 3 This is a schematic diagram of the front structure of the present invention;

[0032] Figure 4 This is a schematic diagram of the mating structure of the ventilation assembly and the lifting assembly of the present invention;

[0033] Figure 5 This is a schematic diagram of the partial mating structure of the ventilation assembly and the lifting assembly of the present invention;

[0034] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle;

[0035] Figure 7 This is a front view of the mating structure of the ventilation assembly and the lifting assembly of the present invention;

[0036] Figure 8This is a top view of the mating structure of the ventilation assembly and the lifting assembly of the present invention;

[0037] Figure 9 This is a cross-sectional view of the mating structure of the ventilation assembly and the lifting assembly of the present invention;

[0038] Figure 10 This is a schematic diagram of the cooperative structure of the limiting plate, sliding plate one, and sliding plate two of the present invention;

[0039] Figure 11 This is a schematic diagram of the mating structure between the buffer component and the rubber head of the present invention;

[0040] Figure 12 This is a schematic diagram of the overall structure of the disc spring of the present invention.

[0041] In the picture:

[0042] 1. Testing box; 2. Fixing components; 3. Ventilation assembly; 301. Air guide tube; 302. Support duct; 303. Air delivery duct; 304. Spiral guide plate; 305. Connecting pipe; 306. Limiting ring; 307. Limiting plate; 308. Drive gear; 309. Rack one; 310. Rack two; 311. Sliding plate one; 312. Sliding plate two; 313. U-shaped frame; 314. Reciprocating lead screw; 315. Drive motor; 316. Slider; 317. 318. Sealing cylinder; 4. Air inlet; 5. Lifting assembly; 6. Connecting piece; 7. Support rod; 8. Buffer piece; 9. Positioning ring; 10. Connecting rod; 11. Fixing ring; 12. Threaded rod; 13. Disc spring; 14. Ear plate; 15. Positioning plate; 16. Elastic inclined plate; 17. Rubber head; 18. L-shaped moving rod one; 19. L-shaped moving rod two; 20. Air vent; 21. Monitoring and display system; 22. Support frame. Detailed Implementation

[0043] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0044] Example 1, referring to Figures 1-12This invention provides a device for testing the breathability of materials used in the production of sweat detection patches, comprising a testing box 1, a fixing member 2 installed on the top of the testing box 1, and a sweat detection patch material clamped inside the fixing member 2. The fixing member 2 includes a fixing ring and a sealing ring. The fixing ring is an annular pressure plate structure with an annular flange on its inner edge for pressing the edge of the sweat detection patch material. The sealing ring is made of elastic material and is nested and fixed inside the fixing ring, with its inner edge forming a flexible contact surface for sealing the clamping area. The sweat detection patch material is clamped by the fixing ring, while the sealing ring ensures airtightness. The fixing member 2 is controlled to move freely up and down by a controller, thereby pressing the sweat detection patch material onto the top of the testing box 1. The device also includes a ventilation component 3 installed inside the testing box 1 for introducing detection gas. The ventilation component 3 includes... The system includes an air guide cylinder 301 installed inside the testing chamber 1. From a top view of the air guide cylinder 301, a circumferentially distributed support guide tube 302 is provided. Several air guide ports 318 are opened on the circumferential side of the support guide tube 302. The support guide tube 302 includes an inner ring support tube group and an outer ring support tube group arranged in an inner and outer ring structure. An air delivery tube 303 is slidably arranged on the circumferential side of the support guide tube 302. The air delivery tube 303 extends to the top of the air guide cylinder 301. A spiral guide plate 304 is rotatably arranged inside the air delivery tube 303. A lifting assembly 4 is installed inside the air guide cylinder 301. The lifting assembly 4 includes connectors 401 that are fixedly arranged in a ring array on the inner ring support tube group and the outer ring support tube group, respectively. Several support rods 402 are fixedly arranged on the top of the connectors 401. A buffer 403 is installed on the top of the support rods 402.

[0045] Specifically, in the initial state, the inner ring support tube group is higher than the outer ring support tube group, and the top of the lifting component 4 forms an upward convex state. See the appendix for details. Figure 7As shown, the sweat detection patch material is then fixed by the fastener 2, ensuring it adheres tightly to the convex lifting component 4. At this point, the sweat detection patch material exhibits a downward-curving arc, and the fastener 2 remains firmly attached to the top of the detection box 1, maintaining the airtightness of the detection box 1. Gas is then injected into the air guide cylinder 301, flowing along the support conduits 302 into the air delivery conduit 303 and impacting the spiral guide plate 304. This causes the spiral guide plate 304 to rotate, simultaneously outputting gas that impacts the corresponding sweat detection patch material. The rotating airflow provides a gentler and more even contact with the material surface, avoiding the potential damage to the material's microstructure that might occur with direct airflow. The structure creates instability in readings, while simultaneously ensuring uniform gas pressure applied to the detection points, guaranteeing consistency in detection conditions at different points. This results in highly comparable data from each point, ultimately enabling the breathability testing of the sweat testing patch material at different points. The support conduit 302 employs an inner and outer double-ring structure and is equipped with multiple air delivery conduits 303, forming a detection point array. This allows for simultaneous detection of multiple areas at the center and edges of the material, rather than the single-point sequential detection of traditional methods. This avoids incomplete data due to insufficient or fixed detection points. In this process, the outer ring support tube is first controlled. As the entire assembly rises, the inner ring support tube assembly descends, the top center of the lifting component 4 gradually concaves, and the surrounding area gradually convexes. The curvature of the sweat detection patch material gradually decreases until it becomes horizontal. Finally, the outer ring support tube assembly is higher than the inner ring support tube assembly, exhibiting a concave state. Subsequently, the outer ring support tube assembly descends in the opposite direction, while the inner ring support tube assembly rises. The top center of the lifting component 4 gradually convexes, and the surrounding area gradually concaves. The sweat detection patch material gradually approaches a horizontal state. Finally, the outer ring support tube assembly is lower than the inner ring support tube assembly, and the sweat detection patch material returns to its initial position, exhibiting an upward convex state. During the same process, the detection box 1 continuously controls the change in the curvature of the sweat detection patch material. This device enables the detection of breathability of the sweat detection patch material during dynamic bending. Simultaneously, each air delivery conduit 303 corresponds to multiple points, allowing for synchronous dynamic detection of the sweat detection patch material at various locations. The device highly simulates real-world usage scenarios. Through the lifting component 4, the sweat detection patch material undergoes a complete bending cycle during the detection process, moving from convex to horizontal to concave, then back to horizontal, and finally back to convex. This accurately simulates the deformation of the sweat patch when actually applied to the skin, caused by joint or muscle movement. The breathability of the material changes with bending and stretching, and this device captures this dynamic performance, making the detection data more valuable for practical reference.

[0046] refer to Figure 2 and Figures 4-6A sealing cylinder 317 is fixedly installed on the periphery of the air guide cylinder 301. A connecting pipe 305 connected to the bottom of the air guide cylinder 301 is fixedly installed and communicates with the interior of the air guide cylinder 301. The connecting pipe 305 is connected to an external ventilation device. A limiting ring 306 is fixedly installed on the periphery of the air guide cylinder 301. A limiting plate 307 is symmetrically fixedly installed on the top of the limiting ring 306. A drive gear 308, a rack 1 309 and a rack 2 310 are fixedly installed inside one of the limiting plates 307. The rack 1 309 and the rack 2 310 are located on both sides of the drive gear 308 and both the rack 1 309 and the rack 2 310 mesh with the drive gear 308. A sliding plate 1 311 and a sliding plate 2 312 are slidably installed on one side of the other limiting plate 307. The rack 1 309 is lower than the rack 2 310.

[0047] Specifically, when the drive gear 308 rotates under the action of external power, it will synchronously drive rack 1 309 and rack 2 310 to move in opposite directions. Thus, through sliding plate 1 311 and sliding plate 2 312, the inner ring support tube group and the outer ring support tube group are precisely controlled to perform stable and synchronous reverse lifting and lowering. This single input and bidirectional reverse output mechanical structure ensures the absolute synchronicity and coordination of the inner and outer ring movements during the material deformation process, making the complete bending cycle of the sweat detection patch material from convex to horizontal to concave highly controllable and repeatable.

[0048] refer to Figures 4-6 A U-shaped frame 313 is fixedly installed on one side of the limiting plate 307 located at rack 309. A reciprocating screw 314 is rotatably installed inside the U-shaped frame 313. The bottom end of the reciprocating screw 314 passes through to the bottom of the U-shaped frame 313 and is fixedly connected to a drive motor 315. A slider 316 is fixedly installed on one side of rack 309. The slider 316 and the reciprocating screw 314 are threaded together.

[0049] Specifically, when the drive motor 315 starts, it drives the reciprocating screw 314 to rotate, forcing the slider 316 to perform precise, reciprocating linear motion along the screw. Since the slider 316 is fixedly connected to the rack 309, it directly drives the rack 309 to perform linear reciprocating motion. The movement of the rack 309 then drives the drive gear 308, which meshes with it, to rotate. The drive gear 308, in turn, links the rack 310 on the other side to perform reverse motion. Finally, through the sliding plates 311 and 312, the power is transmitted to the inner and outer ring support tube assemblies, achieving their synchronous reverse lifting and lowering. The inherent motion characteristics of the 314 ensure that the deformation process of the sweat detection patch material—that is, the complete bending cycle from convex to horizontal and then to concave—can be carried out automatically, smoothly, and infinitely without the need for frequent motor reversals. This achieves highly efficient automation and excellent repeatability of the detection process. This highly integrated reciprocating process, combined with annular air distribution and rotating airflow technology, ensures that the device can perform comprehensive, multi-point synchronous breathability assessments under conditions that highly simulate the dynamic deformation of real skin. This provides irreplaceable dynamic detection data for the performance of the sweat detection patch material under real-world usage conditions.

[0050] Example 2, refer to Figures 1-12 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: both the inner ring support pipe assembly and the outer ring support pipe assembly are fixedly provided with connecting members 401 on their peripheral sides. The connecting member 401 includes a positioning ring 404 fixedly connected to the peripheral side of the gas transmission duct 303, and each positioning ring 404 is connected to the other by a connecting rod 405.

[0051] Specifically, the positioning ring 404 connects to the corresponding air delivery conduit 303 of the pipe group. Adjacent positioning rings 404 are connected by connecting rods 405 to form a connector 401. The components on the inner ring support pipe group are not connected to the components on the outer ring support pipe group. All air delivery conduits 303 on the same ring support pipe group are connected in series by connecting rods 405 to form a stable overall frame. This makes the deformation of the entire inner and outer ring support pipe groups smaller and the overall integrity stronger when subjected to lifting force and undergoing lifting and lowering movements. It effectively prevents inaccurate movements caused by local deformation. The integrated frame structure ensures that all support points on this ring rise and fall absolutely synchronously and smoothly. This ensures that the deformation of the sweat detection patch material is uniform, controllable, and accurately predictable during dynamic bending tests. It completely avoids accidental wrinkles or stress concentrations caused by different support point heights, thereby greatly improving the consistency and reliability of the test data.

[0052] refer to Figures 7-12 The support rod 402 is fixedly installed on the top of the corresponding positioning ring 404, and several support rods 402 located on the circumferential side of the corresponding gas transmission duct 303 are arranged in a ring array on the surface of each positioning ring 404.

[0053] Specifically, controlling the movement of each connector 401 drives the movement of the corresponding support rod 402. Multiple support rods 402 arranged in a ring array together form a stable and evenly distributed group of support points at the top of the positioning ring 404. When lifting the sweat detection patch material, it can provide a nearly continuous and unbiased support force, effectively preventing local collapse, unexpected wrinkles, or stress concentration of the material during bending due to insufficient or uneven distribution of support points. Since all support rods 402 in the same ring are fixed on the same rigid connector 401, their movement is absolutely synchronized, ensuring that the deformation of the sweat detection patch material in the same ring area is highly uniform, controllable, and accurately reproducible during dynamic bending tests.

[0054] refer to Figures 7-12 A fixing ring 406 is fixedly provided on the periphery of the support rod 402, and a threaded rod 407 is fixedly provided on the top of the fixing ring 406. The buffer 403 includes several disc springs 408 stacked on the top of the support rod 402. Ear plates 409 are fixedly provided on the periphery of the disc springs 408 and are sleeved on the threaded rod 407. A positioning disk 410 is fixedly provided on the top of the disc springs 408 at the highest position. Several elastic inclined plates 411 are arranged in a ring array on the top of the positioning disk 410. Rubber heads 412 are fixedly provided on the top of the elastic inclined plates 411. The rubber heads 412 are combined to form a raised arc shape. After the disc springs 408 and the positioning disk 410 are sleeved on the threaded rod 407, they can be fixed with nuts (nuts are existing technology and are not shown in the figure) to prevent the disc springs 408 and the positioning disk 410 from moving during the testing process.

[0055] Specifically, the end contact structure of the lifting component 4 is designed as a highly engineered multi-stage buffering and adaptive system to achieve ultimate protection and precise support for the sweat detection patch material. A buffer 403 is installed on top of the support rod 402. A fixing ring 406 is fixed around the support rod 402, on which a threaded rod 407 stands. The main body of the buffer 403 consists of several stacked disc springs 408, which are fitted onto the threaded rod 407 via peripheral ear plates 409, forming the first-stage high-efficiency buffering and force feedback mechanism. A positioning disc 410 is pressed onto the top of the 408. The positioning disc 410 has a circular array of multiple elastic inclined plates 411, each with a rubber head 412 fixed to its top. These rubber heads 412 together form a flexible, raised, arc-shaped contact surface. When the lifting assembly 4 rises, causing the rubber heads 412 to contact and lift the sweat detection adhesive material, the reaction force generated by the material's bending is transmitted to the buffer system. The raised, arc-shaped rubber head 412, as the final contact layer, provides soft friction to prevent material slippage. The soft properties perfectly avoid scratching or damaging the microstructure of the sweat testing patch material caused by rigid support. This curved surface can better simulate the contour of human skin, making the initial fit more realistic. At the same time, when the material undergoes stress changes during dynamic bending, the force is transmitted to the disc spring 408 through the rubber head 412 and the elastic inclined plate 411. The stacked structure of the disc spring 408 can provide a huge and precise elastic stroke, absorbing and buffering the instantaneous stress peaks caused by deformation, preventing material overload. The ring array of elastic inclined plates 411 allows each rubber head 412 to independently fine-tune its height within a certain range, thereby adapting to the micro-unevenness of the material surface, ensuring extremely uniform distribution of support force, and eliminating local stress concentration. This multi-level buffering system isolates the material from rigid impact, so that the material is always in a soft constraint state throughout the dynamic bending test, effectively preventing sudden changes or distortions in breathability readings caused by sudden stretching or wrinkling of the material, providing a stable environment for the testing process, and thus ensuring that the collected breathability data truly reflects the dynamic performance of the material.

[0056] refer to Figures 7-11 Two L-shaped moving rods 413 are symmetrically fixedly installed on the top of the connector 401 of the inner ring support tube assembly, and two L-shaped moving rods 414 are symmetrically fixedly installed on the top of the connector 401 of the outer ring support tube assembly. The L-shaped moving rods 413 are lower than the L-shaped moving rods 414. The rack 309 and the sliding plate 311 are fixedly connected to the corresponding L-shaped moving rods 413, and the rack 310 and the sliding plate 312 are fixedly connected to the corresponding L-shaped moving rods 414.

[0057] Specifically, when the drive motor 315 drives the rack 309 to move linearly via the reciprocating screw 314, the power is directly applied to the outer ring connector 401 via the L-shaped moving rod 413. At the same time, the movement of the rack 309 is transmitted in the reverse direction to the rack 310 via the drive gear 308, and then the inner ring connector 401 is driven to move in the reverse direction via the L-shaped moving rod 414. The L-shaped moving rod directly and without buffering transmits the linear thrust of the corresponding rack and sliding plate to the entire support tube frame. The rigid connection eliminates any possible transmission gaps or elastic deformation, ensuring that the lifting assembly 4 responds to control commands instantly and accurately, without any lag in movement.

[0058] refer to Figures 1-3 The top of the test box 1 has a vent 5, and the top of the test box 1 is equipped with a monitoring and display system 6. The test box 1 is fixedly equipped with a support frame 7, and the support frame 7 is fixedly connected to the air guide tube 301.

[0059] Specifically, the detection gas ejected from the gas delivery conduit 303 and penetrating the sweat detection patch material eventually converges within the sealed space of the detection chamber 1. It then enters the support conduit 302 through the gas inlet 318, subsequently enters the gas delivery conduit 303, and exits through the top vent 5. The monitoring and display system 6 collects and displays key parameters in real time and promptly provides feedback on the final detection results, achieving the quantification and visualization of detection data and ensuring the long-term stable operation of the entire system. The remaining structure is the same as in Embodiment 1.

[0060] Based on embodiments 1-2, the working principle of this invention is as follows: First, the operator clamps and fixes the sweat detection patch material to the top of the detection box 1 using the fixing component 2. At this time, in the initial state of the lifting component 4, the inner ring support tube group is higher than the outer ring support tube group, and the material presents an upward convex curved state. After the detection begins, the drive motor 315 starts, driving the reciprocating screw 314 to rotate, driving the threaded slider 316 and the fixed rack 309 to perform linear motion. The movement of rack 309 drives the drive gear 308 to rotate, thereby driving rack 310 to perform reverse motion. Rack 309 and rack 310 transmit power to the inner and outer ring connecting component 401 through the L-shaped moving rod 413 and L-shaped moving rod 414, which are respectively fixedly connected. Ultimately, the inner and outer support tube groups achieve stable and synchronous reverse lifting and lowering movements, allowing the material to undergo a complete dynamic bending cycle from convex to horizontal and then concave. Simultaneously, the external ventilation device introduces test gas into the air cylinder 301 through the connecting pipe 305. The gas enters each gas delivery pipe 303 through the air guide port 318 on the support duct 302. The gas impacts the spiral guide plate 304 in the gas delivery pipe 303, causing it to rotate and thus impacting the material surface in a uniform and gentle manner. The gas that penetrates the material gathers inside the test chamber 1 and is finally discharged through the air vent 5 at the top. During this process, the monitoring and display system 6 collects and displays gas parameters in real time, realizing synchronous, quantitative, and dynamic detection of the air permeability performance of the material at multiple points under different bending states.

[0061] Example 3, referring to Figures 1-12 The third embodiment of the present invention provides a manufacturing process for materials used in the production of sweat detection patches, comprising the following steps:

[0062] Base film forming: The polymer is melt-extruded and then cooled and shaped by casting or blow molding to form a waterproof film or release film;

[0063] Adhesive preparation: Medical adhesive and additives are mixed to form an adhesive solution, which is then precisely coated onto a base film and dried or UV cured to form an adhesive layer;

[0064] Hydrophilic layer production: Polymer fibers are spun into a web, and then reinforced into a nonwoven fabric by hot rolling or hydroentangling. Then, it is impregnated with a hydrophilic agent and dried to give it the ability to absorb and wick away sweat. Finally, the nonwoven fabric is clamped to the top of the test box 1 using the fastener 2, and the test gas is introduced into the ventilation component 3 to test its air permeability under dynamic working conditions.

[0065] Sensing layer manufacturing: Bio-enzymes, chemical indicators and polymer matrix are mixed to form bio-sensing ink, which is deposited on the substrate by precision dotting or screen printing technology, and then gently dried to maintain bioactivity. After production, it is assembled into the final detection patch through subsequent processes such as lamination and die cutting.

[0066] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A material air permeability detection device for sweat detection patch production, comprising a detection box (1), a fixing piece (2) is installed on the top of the detection box (1), and a sweat detection patch material is clamped in the fixing piece (2), characterized in that, Also include the installation in the detection box (1) inside the ventilation assembly (3), the ventilation assembly (3) is used for the detection gas into; The ventilation assembly (3) includes a gas guide cylinder (301) installed inside the detection box (1), which is provided with a support guide pipe (302) distributed in a ring shape in the top view of the gas guide cylinder (301), a plurality of gas guide openings (318) are formed on the side surface of the support guide pipe (302), the support guide pipe (302) includes an inner ring support pipe group and an outer ring support pipe group arranged in an inner-outer ring annular structure, a gas conveying guide pipe (303) is slidably arranged on the side surface of the support guide pipe (302), the gas conveying guide pipe (303) penetrates to the upper side of the gas guide cylinder (301), a spiral guide plate (304) is rotatably arranged in the gas conveying guide pipe (303), and a jacking assembly (4) is installed in the gas guide cylinder (301); The jacking assembly (4) includes a plurality of connecting pieces (401) arranged in an annular array on the inner ring support pipe group and the outer ring support pipe group, respectively, a plurality of support rods (402) are fixedly arranged on the top of the connecting piece (401), and a buffer piece (403) is arranged on the top of the support rod (402); The support rod (402) is fixedly provided with a fixing ring (406) on the side surface, and the fixing ring (406) is fixedly provided with a threaded rod (407) on the top; The buffer piece (403) includes a plurality of disc spring pieces (408) stacked on the top of the support rod (402), the disc spring piece (408) is fixedly provided with an ear plate (409) on the side surface, the ear plate (409) is sleeved on the threaded rod (407), the top of the disc spring piece (408) in the highest position is fixedly provided with a positioning disc (410), a plurality of elastic inclined plates (411) are arranged in an annular array on the top of the positioning disc (410), and a rubber head (412) is fixedly arranged on the top of the elastic inclined plate (411). Each rubber head (412) is combined to form a convex arc.

2. The material air permeability detection device for sweat detection patch production according to claim 1, characterized in that, The side surface of the gas guide cylinder (301) is fixedly provided with a sealing cylinder (317), the bottom of the gas guide cylinder (301) is fixedly provided with a connecting pipe (305) in communication with the inside thereof, the connecting pipe (305) is connected with an external ventilation equipment, the side surface of the gas guide cylinder (301) is fixedly provided with a limiting ring (306), the top of the limiting ring (306) is fixedly provided with a limiting plate (307) symmetrically, one of the limiting plates (307) is fixedly provided with a drive gear (308), a rack one (309) and a rack two (310) in the inside, the rack one (309) and the rack two (310) are located on both sides of the drive gear (308), and the rack one (309) and the rack two (310) are engaged with the drive gear (308). The other limiting plate (307) is slidably provided with a sliding plate one (311) and a sliding plate two (312) on one side.

3. The material air permeability detection device for sweat detection patch production according to claim 2, characterized in that, The limiting plate (307) at the rack one (309) is fixedly provided with a U-shaped frame (313) on one side, the U-shaped frame (313) is rotatably provided with a reciprocating screw rod (314) inside, the bottom end of the reciprocating screw rod (314) penetrates to the bottom of the U-shaped frame (313) and is fixedly connected with a driving motor (315), and the rack one (309) is fixedly provided with a sliding block (316) on one side, and the sliding block (316) is threadedly connected between the reciprocating screw rod (314).

4. The material air permeability detection device for sweat detection patch production according to claim 1, characterized in that, The inner circle support pipe group and the outer circle support pipe group are fixedly provided with connecting pieces (401) on the circumferential side surfaces, the connecting pieces (401) include positioning rings (404) fixedly connected with the circumferential side surfaces of the gas conveying pipes (303), and the positioning rings (404) are connected through connecting rods (405).

5. The material breathability detection device for sweat detection patch production according to claim 4, characterized in that, The support rods (402) are fixedly arranged on the top of the corresponding positioning rings (404), and the surface of each positioning ring (404) is arranged with a plurality of support rods (402) located on the circumferential side surface of the corresponding gas conveying pipe (303).

6. The material air permeability detection device for sweat detection patch production according to claim 2, characterized in that, The top of the connecting piece (401) at the position of the inner circle support pipe group is symmetrically fixedly provided with two L-shaped moving rods one (413), the top of the connecting piece (401) of the outer circle support pipe group is symmetrically fixedly provided with two L-shaped moving rods two (414), and the L-shaped moving rod one (413) is lower than the L-shaped moving rod two (414). The rack one (309) and the sliding plate one (311) are fixedly connected with the corresponding L-shaped moving rod one (413), and the rack two (310) and the sliding plate two (312) are fixedly connected with the corresponding L-shaped moving rod two (414).

7. The material air permeability detection device for sweat detection patch production according to claim 1, characterized in that, The detection box (1) is provided with a ventilation opening (5) on the top, a monitoring display system (6) is installed on the top of the detection box (1), a support frame (7) is fixedly arranged in the detection box (1), and the support frame (7) is fixedly connected with the air guide cylinder (301).

8. A process for producing a material for producing a sweat detecting patch, using the air permeability testing device for a material for producing a sweat detecting patch according to any one of claims 1 to 7, characterized by, The method comprises the following steps: Base film forming: melt-extruding a polymer, and then cooling and shaping by casting or blowing to form a waterproof film or a release film; Preparation of adhesive: mixing medical glue and additives to form glue solution, which is precisely coated on the base film, and then dried or UV cured to form a glue layer; Hydrophilic layer making: spinning polymer fibers into a web, and then reinforcing into a non-woven fabric by hot rolling or water jetting, then impregnating with a hydrophilic agent and drying to give it sweat absorption and sweat guiding ability, finally clamping the non-woven fabric on the top of the detection box (1) by the fixing piece (2), introducing detection gas through the ventilation assembly (3), and detecting the air permeability under dynamic conditions; Sensing layer manufacturing: mixing biological enzymes, chemical indicators and high molecular matrix to prepare biological sensing ink, which is deposited on the substrate by precise spotting or screen printing technology, and then gently dried to maintain biological activity, and finally assembled into the final detection patch through subsequent processes such as lamination and die cutting.

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