Method and device for testing wet-state attachment force of clothing material

Abstract

The invention discloses a method for testing wet-state attachment force of a clothing material. The method comprises the following steps: preparing an experiment, adjusting and controlling an experiment environment, preparing the clothing material to be tested as a sample, loading the sample to a sample unit, and placing the forearm of a tested person on an arm supporting unit; dynamic simulation is carried out, the sample unit is attached to the forearm skin of a testee, the sweating unit sprays water to the skin to simulate the sweating process of the forearm, and the sample unit moves in the direction away from the forearm of the testee till the sample unit is completely separated from the forearm skin; data are collected, a force value is detected in real time through a force measuring unit, a collecting system inputs force value information to a control system, and a curve graph of the relation between the attaching force and displacement is obtained. According to the method for testing the wet-state attachment force of the apparel, a more objective and accurate apparel attachment force testing result can be obtained, the human body is always in a comfortable state in the testing period, the testing accuracy is improved, the perspiration unit can achieve the effect of simulating the real perspiration state of the human body, sample replacement is convenient and rapid, and operation is easy.

Description

Technical Field

[0001] The present invention relates to the field of clothing testing, and in particular to a clothing wet adhesion testing method and a clothing wet adhesion testing device for implementing the method. Background Art

[0002] In today's diversified and competitive consumer market, consumers' expectations for clothing have far exceeded the basic needs of covering the body and keeping warm. With the improvement of quality of life and the awakening of health awareness, people are increasingly inclined to choose clothing that reflects a high-quality lifestyle. When purchasing clothing, consumers not only pay attention to novel styles, harmonious color matching and reasonable prices, but also place the comfort experience of wearing at an unprecedented height. Especially in the field of sportswear, although many products that claim to have functions such as moisture absorption, quick drying, and one-way moisture conduction have emerged on the market, consumers still face the problem of clothing sticking to the skin after sweating a lot, which not only greatly reduces the comfort of wearing, but may also have an adverse effect on sports performance.

[0003] Traditionally, the testing of the adhesion performance of clothing mainly relies on subjective evaluation methods, such as wearing tests or hand feel evaluation. Although these methods can intuitively reflect the actual feelings of the wearer, they lack objectivity and repeatability, making it difficult to accurately quantify the adhesion performance of clothing, thus limiting their application in product development and quality control. In order to overcome the limitations of subjective evaluation methods, researchers are committed to developing more objective and accurate testing methods and devices.

[0004] However, the existing objective testing methods still have certain limitations. The simulated skin used in the test differs from actual human skin in physical and chemical properties, which may lead to the test results being inconsistent with the subjective tactile sensation under actual wearing conditions. This makes it difficult to be closer to actual wearing conditions, resulting in inaccurate results in evaluating the sticky-skin performance of clothing.

[0005] Method content

[0006] The purpose of the present invention is to provide a method and device for testing the wet adhesion of clothing, which can simulate the sweating state of human arms when wearing clothing to detect the wet adhesion of clothing when the clothing is separated from human skin, and the test results are objective and accurate. The specific technical solutions are as follows:

[0007] A method for testing wet adhesion of clothing materials, comprising:

[0008] Experimental preparation, adjusting and controlling the experimental environment, preparing the clothing to be tested as samples, loading the samples into the sample unit, and the subject placing the forearm on the support arm unit;

[0009] Dynamic simulation: the sample unit is attached to the subject's forearm skin, and the sweating unit sprays water onto the skin to simulate the forearm sweating process, so that the sample unit moves away from the subject's forearm until it is completely separated from the forearm skin;

[0010] Collect data, detect the force value in real time through the force measurement unit, and the acquisition system inputs the force value information into the control system to obtain a curve graph of the relationship between adhesion force and displacement.

[0011] Furthermore, it also includes sensory evaluation, which collects the subjects' sensory evaluation of the clothing samples when they are in contact with the forearm skin. The sensory characteristics evaluation includes dryness, wetness, separation and smoothness, and is combined with the data curve results for evaluation.

[0012] Furthermore, during the experimental preparation, placing the forearm on the arm support unit includes the subject placing the elbow of the arm in the middle position of the supporting part of the arm support unit, grasping and sliding the handle of the arm support unit with the palm to adjust the palm grip position so that the subject is in a comfortable state.

[0013] Furthermore, the experimental preparation also includes the subjects wearing blindfolds.

[0014] Furthermore, preparing the clothes to be tested as samples in the experimental preparation includes cutting the clothes into samples, and the long sides of the samples are arranged parallel to the radial direction of the fabric during cutting.

[0015] Further, the clothing material is cut so that the sample length is 140 mm-160 mm and the width is 70 mm-90 mm.

[0016] Furthermore, during experimental preparation, loading the sample into the sample unit includes removing the clamping frame of the sample unit, disassembling the clamp of the clamping frame, placing the sample between the pins and pin grooves on the clamping assembly of the clamping frame, fixing the clamping assembly with the clamp, and connecting the clamping frame with the connecting part of the sample unit.

[0017] Furthermore, the amount of water added to the sweating unit in the dynamic simulation is set to 10 ml to 15 ml.

[0018] Furthermore, in the dynamic simulation, before the sample unit is moved in a direction away from the subject's forearm, it needs to be left to stand for a period of time.

[0019] Furthermore, in the dynamic simulation, the water addition amount of the sweating unit is set to 10 ml to 15 ml, the water addition speed is set to 4 ml / min to 6 ml / min, the initial load of the sample unit is 4 cN to 6 cN, the standing time is 8 s to 12 s, the separation speed of the sample unit is 8 mm / min to 12 mm / min, and the separation distance between the sample and the arm is set to 25 mm to 35 mm.

[0020] Furthermore, in the experimental preparation, the temperature of the experimental environment was set to 28° C. to 32° C., and the humidity was set to 57% to 63%.

[0021] Furthermore, the experimental preparation also includes collecting the subject's skin condition information, which includes whether there is a history of skin disease, a history of laser hair removal, scars, and recent body hair treatment.

[0022] A device for testing the adhesion of wet fabrics is used to implement the above-mentioned method for testing the adhesion of wet fabrics, comprising a power unit, a sample unit, a sweating unit and an arm unit. The arm unit is used to place a human arm. The sweating unit is relatively arranged on one side of the arm unit. The sweating unit can simulate the sweating effect of the human arm on the arm unit. The sample unit is relatively arranged on the other side of the arm unit. The power unit is connected to the sample unit. The power unit can adjust the distance between the sample unit and the arm unit so that the fabric to be tested on the sample unit and the human arm on the arm unit can be attached to and separated from each other.

[0023] Furthermore, the arm unit includes a supporting portion and a gripping assembly that are arranged opposite to each other, and the distance between the supporting portion and the gripping assembly is adjustable.

[0024] Furthermore, the holding assembly includes a handle, a first distance adjusting plate and a second distance adjusting plate which are movably connected in sequence, the first distance adjusting plate has a first track so that the handle can reciprocate in a first direction on the first distance adjusting plate, and the second distance adjusting plate has a second track so that the first distance adjusting plate can reciprocate in a second direction on the second distance adjusting plate.

[0025] Furthermore, the arm support unit also includes a wrist support part and a first adjustment rod. The wrist support part is located between the supporting part and the handle. The wrist support part and the second distance adjustment plate are connected through the first adjustment rod to support the wrist joint of the human forearm.

[0026] Furthermore, the sample unit includes a detachably connected clamping frame and a connecting portion, and the clamping frame is connected to the power unit via the connecting portion.

[0027] Furthermore, the clamping frame also includes a clamping assembly and two clamps. The clamping assembly includes a rod body and a clamping plate. One of the rod body and the clamping plate is provided with a plurality of nail grooves, and the other of the rod body and the clamping plate is provided with a plurality of nails, and the nails are arranged corresponding to the nail grooves. The two clamps are respectively arranged at both ends of the clamping assembly.

[0028] Furthermore, the sweating unit includes a water bath, a first water pump and a water spray assembly which are connected in sequence, and the water spray assembly includes a water storage tank, a water suction pipe, a second water pump, a water outlet pipe and a water spray pipe. The second water pump is connected to the water storage tank through the water suction pipe, and the second water pump is connected to the water spray pipe through the water outlet pipe. The water spray pipe and the water storage tank are arranged on both sides of the arm unit opposite to each other.

[0029] Furthermore, the power unit includes a first transmission component and a second transmission component that are connected and arranged. The first transmission component can drive the sample unit to reciprocate along the first direction, and the second transmission component can drive the sample unit to reciprocate along the second direction. The first transmission component includes a first motor, a first screw rod, a first slide rail, a first bearing plate and a first slider. The first motor and the first bearing plate are respectively arranged at two ends of the first slide rail, and the two ends of the first screw rod are respectively connected to the first motor and the first bearing plate, and the first slider is sleeved on the first screw rod; the second transmission component includes a second motor, a second screw rod, a second slide rail, a second bearing plate and a second slider. The second motor and the second bearing plate are respectively arranged at two ends of the second slide rail, and the two ends of the second screw rod are respectively connected to the second motor and the second bearing plate, the second slider is sleeved on the second screw rod, and the second slide rail is fixedly connected to the first slider.

[0030] Furthermore, the device also includes a force measurement unit and a collection system, the force measurement unit is connected to the power unit, and the force measurement unit is electrically connected to the collection system.

[0031] Furthermore, the force measuring unit is configured as a force sensor.

[0032] Furthermore, the device also includes a control system, and the power unit, the sweating unit and the collection system are electrically connected to the control system respectively.

[0033] The wet adhesion test method and device of the present invention have the following advantages:

[0034] 1. By attaching the sample unit to the subject's forearm skin, the sweating unit sprays water to the skin to simulate the forearm sweating process, so that the sample unit moves away from the subject's forearm until it is completely separated from the forearm skin. The force measurement unit detects the force value in real time, and the acquisition system inputs the force value information into the control system to obtain a curve diagram of the relationship between adhesion force and displacement, so as to obtain more objective and accurate clothing adhesion test results;

[0035] 2. The placement of the human forearm can be adjusted, so the human body is always in a comfortable state during the test, which improves the accuracy of the test;

[0036] 3. The sweating unit can adjust the water temperature and water volume to simulate the real human sweating state;

[0037] 4. Sample replacement is convenient and fast, easy to operate;

[0038] 5. The structural space design of each unit of the device is reasonable, with high degree of integration and automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a three-dimensional diagram of the wet adhesion testing device for clothing of the present invention.

[0040] Figure 2 It is a front side view of the wet adhesion testing device for clothing of the present invention.

[0041] Figure 3 It is a top view of the wet adhesion testing device for clothing of the present invention.

[0042] Figure 4 It is a left side view of the wet adhesion testing device for clothing of the present invention.

[0043] Figure 5 It is an enlarged view of the clamping frame in the wet adhesion testing device for clothing of the present invention.

[0044] Figure 6 This is the Textile Adhesion Questionnaire A.

[0045] Figure 7 This is the Textile Adhesion Questionnaire B. DETAILED DESCRIPTION

[0046] In order to better understand the purpose, structure and function of the present invention, the method and device for testing the wet adhesion of clothing materials of the present invention are described in detail below in conjunction with the accompanying drawings.

[0047] like Figures 1 to 5 As shown, the wet adhesion test device for clothing includes a machine and a control system. The machine is provided with a collection system, a power unit, a force measuring unit, a sample unit, a sweating unit and an arm unit. The arm unit includes a supporting part and a gripping component. The side where the collection unit is located is defined as the rear side, the side where the sweating unit is located is defined as the front side, the side where the supporting part is located is defined as the right side, the side where the gripping component is located is defined as the left side, the direction of movement on the line connecting the front side and the rear side is the first direction, and the direction of movement on the line connecting the left side and the right side is the second direction. The forearm of the subject is placed on the arm unit, the sweating unit is relatively arranged on one side of the arm unit, and the control system The sweating unit is driven to spray water on the human forearm to simulate human sweating. The clothing sample is placed on the sample unit. The power unit is connected to the sample unit. The control system drives the power unit to move back and forth along the first direction and the second direction on the machine to drive the sample on the sample unit to adhere to the human forearm. After the sweating unit simulates human sweating, the power unit can drive the sample to gradually separate from the human forearm. The power unit is connected to a force measuring unit, which is electrically connected to a collection system. The force value of the sample adhesion force is detected in real time through the force measuring unit. The collection system inputs the force value information into the control system to obtain a data curve chart of the relationship between adhesion force and displacement.

[0048] The wet adhesion test device of the present invention is provided with a power unit, a sample unit, an arm unit and a sweating unit. The sweating unit simulates the sweating state of the human body by adjusting the water volume and water temperature. The power unit drives the clothing sample to adhere to the human body. The human body can feel the real feeling of the adhesion of the clothing after sweating. The process of the sample unit gradually separating from the human forearm after sweating can objectively and quantitatively display the adhesion degree of the clothing through the force measurement unit. At the same time, since the arm unit can place the human arm, the pre-investigation and post-investigation of the subject are increased. Combined with the subject's feeling of the wet adhesion of the clothing, the wet adhesion of the clothing is comprehensively evaluated, and more objective and accurate test results can be obtained.

[0049] In order to better understand the purpose, structure and function of the present invention, the following is a further detailed description of the clothing wet adhesion test device of the present invention in conjunction with the accompanying drawings, taking the specific structure of the clothing wet adhesion test device as an example.

[0050] like Figures 1 to 5 As shown, the wet adhesion test device for clothing includes a machine 100 and a control system 200. The machine 100 is provided with a collection system 300, a power unit 400, a force measurement unit 500, a sample unit 600, a sweating unit 700 and an arm unit 800. Among them, the arm unit 800 can be placed on the human forearm, and the clothing sample to be tested is placed on the sample unit 600. The sample unit 600 is fixedly connected to the power unit 400, and the sample unit 600 and the arm unit 800 are relatively arranged at the same height so that the sample and the human forearm are at the same height. It should be noted that the same height includes both the height at which the sample and the human forearm are completely opposite to each other and the height with a certain deviation, as long as the effect of adhesion between the sample and the human forearm can be achieved.

[0051] The control system 200 is electrically connected to the power unit 400, which is relatively arranged at the rear side of the support arm unit 800. The control system 200 can drive the power unit 400 to reciprocate along the second direction on the machine 100, adjust the sample and the human forearm to be in a relative position, and then drive the power unit 400 to move forward along the first direction on the machine 100 to make the sample fit the human forearm. The control system 200 is electrically connected to the sweating unit 700, which is relatively arranged at the front side of the support arm unit 800. The control system 200 can drive the sweating unit 700 to spray water on the human forearm on the support arm unit 800, and the temperature and amount of the sprayed water can be adjusted by the control system 200 to simulate the real sweating state of the human body when wearing clothes. The control system 200 drives the power unit 400 to move backward along the first direction on the machine 100 to gradually separate the sample from the human forearm. A force measuring unit 500 is fixedly arranged on the power unit 400, and the force measuring unit 500 is electrically connected to the collection system 300, and the collection system 300 is electrically connected to the control system 200. When the power unit 400 drives the sample to separate from the forearm, the adhesion force received by the sample is measured by the force measuring unit 500, and the collection system 300 transmits the measured adhesion force data to the control system 200. The adhesion force-displacement curve is obtained through analysis and calculation by the control system 200, thereby realizing the test of the wet adhesion force of the clothing.

[0052] Specifically, Figure 4 As shown, the arm unit 800 includes a supporting portion 810 and a gripping assembly 820 that are relatively arranged. The supporting portion 810 is arranged on the right side of the platform 100. The supporting portion 810 is connected to the platform 100 through a retractable second adjusting rod to lift the subject's forearm to keep a distance from the platform 100, thereby increasing the comfort of the subject's arm and body during the test. The supporting portion 810 is an overall downwardly curved arc structure, thereby further improving the comfort of the human forearm when placed.

[0053] The gripping assembly 820 is arranged on the left side of the machine 100, and the gripping assembly 820 includes a grip 821, a support arm 824, a first distance-adjusting plate 822 and a second distance-adjusting plate 823 which are movably connected in sequence. The first distance-adjusting plate 822 has a first track 825 formed by a groove structure. The first track 825 and the grip 821 are connected through the support arm 824, so that the grip 821 can reciprocate along the first direction on the first distance-adjusting plate 822, thereby adjusting the distance between the supporting portion 810 and the grip 821 to adapt to the forearm length of the subject. The second distance-adjusting plate 823 has a second track formed by a groove structure, so that the first distance-adjusting plate 822 can reciprocate along the second direction on the second distance-adjusting plate 823, and adjust the lateral offset angle between the supporting portion 810 and the grip 821 to adapt to the forearm placement angle and grip angle of the subject, so that the subject is in a comfortable state when holding, thereby improving the accuracy and reliability of the test.

[0054] Furthermore, the arm support unit 800 also includes a wrist support 830, which is connected to the second distance adjustment plate 823 through a retractable first adjustment rod. The wrist support 830 is located between the supporting portion 810 and the handle 821, and is used to support the wrist of the subject. At the same time, it moves up and down through the first adjustment rod to match the height of the subject's wrist after gripping. The subject can adjust the position of the palm of hand through the grip assembly 820, so that the subject can be tested in a comfortable state. The wrist support 830 helps to reduce the subject's fatigue and discomfort, and further improve the accuracy and reliability of the test.

[0055] It should be noted that the subject's forearm needs to remain still during the test to obtain accurate adhesion test results. Therefore, in this embodiment, an arm support unit is provided to support the forearm, and the forearm placement angle and grip angle can be adjusted, as well as the wrist is supported. This is to avoid active or passive displacement of the subject's forearm due to prolonged arm placement, fatigue or discomfort during the test, thereby ensuring the accuracy and reliability of the test.

[0056] like Figure 3 and Figure 4As shown, the power unit 400 is arranged on the machine 100, located at the rear side of the arm unit 800, and includes a first transmission component 410 and a second transmission component 420 that are connected. The power unit 400 is electrically connected to the control system 200. The control system 200 calculates and sends instructions through an algorithm to accurately control the movement speed and position of the two transmission components. The second transmission component 420 can drive the sample unit 600 to reciprocate left and right along the second direction. The first transmission component 410 is slidably arranged on the second transmission component 420. The first transmission component 410 is detachably connected to the sample unit 600, and can drive the sample unit 600 to reciprocate back and forth along the first direction, so that the power unit 400 can move freely in a two-dimensional plane to meet different clothing material requirements.

[0057] Specifically, the first transmission assembly 410 includes a first motor 411, a first screw rod 412, a first slide rail 413, a first bearing plate 414 and a first slider 415. The first motor 411 is arranged at one end of the first slide rail 413, the first slide rail 413 is fixedly connected to the machine 100, the first bearing plate 414 is arranged at an end of the first slide rail 413 away from the first motor 411, one end of the first screw rod 412 is fixedly connected to the output end of the first motor 411, the end of the first screw rod 412 away from the first motor 411 is fixedly connected to the first bearing plate 414, the first slider 415 is sleeved on the first screw rod 412 and is slidably connected to the first slide rail 413, the second transmission assembly 420 is fixedly connected to the first slider 415, and the first motor 411 is electrically connected to the control system 200. The first motor 411 provides power and converts the rotational motion into linear motion through the first screw rod 412. The first slide rail 413 and the first slider 415 ensure the stability and accuracy of the linear motion. The first bearing sheet 414 is used to support the other end of the first screw rod 412 to maintain its stability, thereby realizing the reciprocating movement of the sample unit 600 along the first direction.

[0058] The second transmission assembly 420 includes a second motor 421, a second screw rod 422, a second slide rail 423, a second bearing plate 424 and a second slider 425. The second motor 421 is arranged at one end of the second slide rail 423, the second bearing plate 424 is arranged at an end of the second slide rail 423 away from the second motor 421, one end of the second screw rod 422 is fixedly connected to the output end of the second motor 421, and the end of the second screw rod 422 away from the second motor 421 is fixedly connected to the second bearing plate 424. The second slider 425 is sleeved on the second screw rod 422 and is slidably connected to the second slide rail 423. The second slide rail 423 is fixedly connected to the first slider 415, and the second motor 421 is electrically connected to the control system 200. The second motor 421 provides power and converts the rotational motion into linear motion through the second screw rod 422. The second slide rail 423 and the second slider 425 ensure the stability and accuracy of the linear motion. The second bearing sheet 424 is used to support the other end of the second screw rod 422 to maintain its stability, thereby realizing the reciprocating movement of the sample unit 600 along the second direction.

[0059] like Figure 2 and Figure 4 As shown, the sample unit 600 is connected to the power unit 400 and is relatively arranged on the back side of the forearm. A bracket is provided on the second slider 425 of the power unit 400. The force measuring device is fixedly connected to the bracket. The force measuring device is electrically connected to the acquisition system 300, and the acquisition system 300 is electrically connected to the control system 200. The force measuring device is used to measure the adhesion force between the clothing sample and the skin of the subject's forearm in real time. In this embodiment, the force measuring device adopts a force sensor, and the force data is transmitted to the control processing system through the acquisition system 300 for analysis and calculation.

[0060] The sample unit 600 includes a clamping frame 610 and a connecting portion 630. The clamping frame 610 is connected to the bracket of the power unit 400 through the connecting portion 630. The connecting portion 630 has a groove. The clamping frame 610 includes a first clamping assembly 611 and a second clamping assembly 612 that are arranged opposite to each other. The first clamping assembly 611 and the second clamping assembly 612 are connected through a connecting frame 620. The connecting frame 620 is provided with a protrusion, which can be correspondingly engaged with the groove on the connecting portion 630, so that the clamping frame 610 and the connecting portion 630 can be detachably connected. The purpose of setting the detachable structure is that the first clamping assembly 611 and the second clamping assembly 612 are used to fix the two ends of the clothing to be tested. The clothing samples need to be frequently replaced during the test. After the clamping frame 610 is removed from the connecting portion 630, it is easier to replace the sample, thereby improving the convenience of operation. It can be understood that other active connection methods such as bolts or locks can also be used to connect the clamping frame 610 and the connecting portion 630.

[0061] Specifically, Figure 5As shown, the first clamping assembly 611 includes a first rod body 613 and a first clamping plate 614, the first rod body 613 is provided with a plurality of first nail grooves (not shown in the figure), the first clamping plate 614 is provided with a plurality of first nails 615, and the first nails 615 are arranged corresponding to the first nail grooves, the second clamping assembly 612 includes a second rod body and a second clamping plate, the second rod body is provided with a plurality of second nail grooves, the second clamping plate is provided with a plurality of second nails, and the second nails are arranged corresponding to the second nail grooves, the upper and lower ends of the clothing sample are respectively arranged between the above two groups of rod bodies and clamping plates, and the sample is fixed by the engagement of the nails and the nail grooves. It can be understood that the first nail 615 can also be arranged on the first rod body 613, the first nail groove is arranged on the first clamping plate 614, and the second clamping assembly 612 is also the same. In this embodiment, the sample is fixed by the combination of nails and nail grooves, so that the two ends of the sample are fixed while still having a certain tensile deformation space, so as to simulate the real deformation of the clothing when it contacts the human skin.

[0062] Furthermore, the clamping frame 610 also includes two first clamps 616 and two second clamps, the two first clamps 616 are respectively arranged at the left and right ends of the first clamping assembly 611, and the two second clamps are respectively arranged at the left and right ends of the second clamping assembly 612, thereby enhancing the fit between the first rod 613 and the first clamping plate 614, and between the second rod and the second clamping plate, to achieve a stable clamping effect on both ends of the sample. It is understandable that those skilled in the art can select other structures such as locks according to actual needs, as long as they can achieve the effect of fixing both sides of the sample.

[0063] like Figure 3 and Figure 4 As shown, the sweating unit 700 includes a third motor 701, and a digital display constant temperature water bath 702, a miniature first water pump 703 and a water spray assembly which are connected in sequence. The first water pump 703 and the water spray assembly are fixedly connected to the machine 100, the third motor 701 is connected to the water pump, the first water pump 703 is fixedly connected to the third motor 701, the third motor 701 is electrically connected to the control system 200, the third motor 701 is used as a power source to control the operation of the first water pump 703, one end of the first water pump 703 is connected to the digital display constant temperature water bath 702 through a pipeline, the water outlet end of the first water pump 703 is connected to the water spray assembly, and is used to extract water from the digital display constant temperature water bath 702 and spray it onto the forearm through the water spray assembly, the digital display constant temperature water bath 702 is used to provide water at a constant temperature, which can effectively control the water temperature and water volume, and help to better simulate the actual wearing conditions, so that the test results are closer to the actual use.

[0064] The water spray assembly is relatively arranged at the front side of the support arm unit 800, and includes a water storage tank 704, a water suction pipe 705, a second water pump 706, a water outlet pipe 707 and a water spray pipe 708. The water spray pipe 708 is relatively arranged at both sides of the support arm unit 800 to allow the water sprayed from the water spray pipe 708 to fall into the water storage tank 704 through the front and back of the human body for recovery. One end of the water suction pipe 705 is connected to the water storage tank 704, and the end of the water suction pipe 705 away from the water storage tank 704 is connected to the second water pump 706. The second water The water outlet end of the pump 706 is connected to the water outlet pipe 707. The second water pump 706 usually has a certain pressure and flow rate to ensure that the water can flow stably and be evenly sprayed to the target area. The end of the water outlet pipe 707 away from the second water pump 706 is detachably connected to the water spray pipe 708. The water spray pipe 708 can be replaced according to different water spray effect requirements. A number of water spray holes are provided on the water spray pipe 708. Different water spray effects can be achieved by adjusting the size, number and arrangement of the water spray holes.

[0065] The test method using the above-mentioned clothing wet adhesion test device is as follows, including: S1 experimental preparation, S2 dynamic simulation, S3 data collection and S4 functional evaluation.

[0066] Specifically, the S1 experiment preparation includes adjusting and controlling the experimental environment, preparing the clothing to be tested as samples, loading the samples into the sample unit, collecting the subject's skin condition information, and the subject places the forearm on the arm unit and wears an eye mask. Among them, the temperature and humidity of the experimental environment are set to ensure that the experiment is carried out under controlled conditions. The temperature is set at 28℃ to 32℃, and the humidity is set at 57% to 63% to simulate the actual wearing environment and reduce the impact of environmental factors on the test results.

[0067] Prepare the clothing samples to be tested, cut the clothing samples, set the long side of the samples parallel to the radial direction of the fabric, ensure that there are enough samples of each sample for testing, ensure the consistency and comparability of the test, cut the samples to a length of 140mm-160mm and a width of 70mm-90mm, and load the cut samples into the sample unit, specifically, remove the clamping frame of the sample unit, disassemble the clamp of the clamping frame, place the sample between the nail and the nail groove on the clamping assembly of the clamping frame, fix the clamping assembly with the clamp, and then connect the clamping frame to the connecting part of the sample unit. In this embodiment, the clothing samples are cut to a size of 80mm-150mm to facilitate fixing them in the clamping frame of the sample unit.

[0068] like Figure 6As shown, the skin condition information of the subjects is collected, and the subjects are selected to conduct questionnaire A survey to ensure that the skin condition of the subjects meets the test requirements, such as no history of skin disease, no history of laser hair removal, no scars, no recent body hair treatment, etc., to ensure the accuracy and reliability of the test and avoid test errors caused by personal factors of the subjects.

[0069] The subject places the forearm on the arm support unit, specifically, the forearm on the supporting part of the arm support unit, and the subject places the elbow of the test arm in the middle of the supporting part to ensure the consistency of the test part. At the same time, the subject is required to hold the handle with the palm to ensure the stability of the test part. According to the actual situation of the subject's forearm, the distance between the handle and the supporting part is adjusted, and the right palm tightly holds the handle. Furthermore, the subject wears a blindfold so that the subject cannot obtain information about the wetness of the clothing through vision, thereby enhancing the tactile perception of the forearm and improving the accuracy and effectiveness of the sensory property evaluation.

[0070] The S2 dynamic simulation is to first open the test software through the control system, input the sample information and test parameters, drive the power unit to contact and attach the sample to the forearm, and the control system drives the sweating unit to spray water to the skin to simulate the sweating process of the forearm, so that the sample unit moves away from the forearm of the subject until it is completely separated from the forearm skin. Furthermore, before the sample unit moves away from the forearm of the subject, it needs to be left still for a period of time so that the sample is in a wet state and fully in contact with the skin, which is conducive to the human body to obtain tactile sensation and improve the accuracy and effectiveness of the test.

[0071] After analyzing the experimental data, it is known that the normal adhesion value can be used as a result parameter to characterize different samples under the condition of changing water addition. In the machine experiment, there are significant differences in the mean values ​​of machine test adhesion of different samples at different water addition amounts (0ml, 1ml, 5ml, 10ml, 15ml). The increase in water addition has a significant effect on the adhesion of the sample, especially when the water addition amount is 10ml, the adhesion reaches the highest. In the forearm experiment, the different water addition amounts significantly affect the mean value of the forearm test adhesion (cN) of the sample. The adhesion when the water addition amount is 10ml and 15ml is significantly higher than the adhesion when the water addition amount is 0ml, 1ml and 5ml. The water addition has a significant effect on the normal adhesion, especially when the water addition amount is 10ml and 15ml, the normal adhesion is significantly higher. It is significantly higher than other water addition amounts. Therefore, in the normal adhesion force experiment, the recommended water addition amount is set to 10ml. Therefore, in the dynamic simulation, the water addition amount of the sweating unit is set to 10ml to 15ml, the water addition speed is set to 4ml / min to 6ml / min, the initial load of the sample unit is 4cN to 6cN, the standing time is 8s to 12s, the separation speed of the sample unit is 8mm / min to 12mm / min, and the separation distance between the sample and the arm is set to 25mm to 35mm. Based on the comprehensive analysis of the experimental data, the equipment parameters in this embodiment are set to sweating amount 10ml, initial load 5cN, sweating speed 5ml / min, waiting time 10s, separation speed 10mm / min, sample attachment speed 300mm / min, and separation distance 30mm.

[0072] S3 collects data by real-time detection of force values ​​through a force measurement unit. The signal is transmitted to the control system through the data acquisition system. After the clothing sample is completely separated from the subject's forearm skin, the control system automatically calculates and obtains a curve graph of the relationship between adhesion force and displacement.

[0073] S4 sensory evaluation is to collect the sensory characteristics of the clothing samples when they come into contact with the forearm skin, and combine them with the data curve results for a comprehensive evaluation. Figure 7 As shown, the sensory properties were evaluated using Questionnaire B, including ratings of dryness to wetness, separation to adhesion, smoothness to closeness, etc. The above parameters are important parameters for measuring the sensory experience when textiles interact with the skin.

[0074] The wet adhesion test device of the present embodiment has a reasonable structural design and is easy to use. This structure can also be used for other equipment with similar usage requirements. In the present embodiment, the wet adhesion test device and method of the clothing objectively evaluate the skin adhesion performance of the clothing through physical testing means, and also obtain the subjective feelings of the test subject through sensory evaluation, thereby realizing the combination of subjective and objective data, providing a more comprehensive evaluation, and providing important technical support for the design and production of the textile industry, helping manufacturers to improve fabric performance, and then design products that better meet market demand and enhance the wearing experience.

[0075] The terms “above”, “below” and “within” mentioned above include the number itself; the terms “exceed” and “outside” do not include the number itself.

[0076] The present invention is further described above with the help of specific embodiments, but it should be understood that the specific description here should not be understood as limiting the essence and scope of the present invention. Various modifications made to the above embodiments by ordinary technicians in this field after reading this specification belong to the scope of protection of the present invention. The various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the embodiments of the present invention will not be described separately for various possible combinations.

[0077] If the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

Claims

1. A method for testing the wet adhesion of clothing, characterized in that: include: Experimental preparation, adjusting and controlling the experimental environment, preparing the clothing to be tested as samples, loading the samples into the sample unit, and the subject placing the forearm on the support arm unit; Dynamic simulation: the sample unit is attached to the subject's forearm skin, and the sweating unit sprays water onto the skin to simulate the forearm sweating process, so that the sample unit moves away from the subject's forearm until it is completely separated from the forearm skin; Collect data, detect the force value in real time through the force measurement unit, and the acquisition system inputs the force value information into the control system to obtain a curve graph of the relationship between adhesion force and displacement.

2. The method for testing wet adhesion of clothing materials according to claim 1, characterized in that: It also includes sensory evaluation, which collects the subjects' evaluation of the sensory characteristics of the clothing samples when they come into contact with the skin of the forearm. The sensory characteristics evaluation includes dryness, wetness, separation and smoothness, and is evaluated in combination with the data curve results.

3. The method for testing wet adhesion of clothing materials according to claim 1, characterized in that: During the experimental preparation, the forearm is placed on the arm support unit, which includes the subject placing the elbow of the arm in the middle position of the supporting part of the arm support unit, grasping and sliding the handle of the arm support unit with the palm, and adjusting the palm grip position to make the subject in a comfortable state.

4. The method for testing wet adhesion of clothing materials as claimed in claim 2, characterized in that: The experimental preparation also includes having the subjects wear blindfolds.

5. The method for testing wet adhesion of clothing materials according to claim 1, characterized in that: Preparing the clothes to be tested as samples in the experimental preparation includes cutting the clothes into samples, and the long sides of the samples are arranged parallel to the radial direction of the fabric during cutting.

6. The method for testing wet adhesion of clothing materials according to claim 5, characterized in that: Cut the fabric so that the sample length is 140mm-160mm and the width is 70mm-90mm.

7. The method for testing wet adhesion of clothing materials according to claim 1, characterized in that: During the experimental preparation, loading the sample into the sample unit includes removing the clamping frame of the sample unit, disassembling the clamp of the clamping frame, placing the sample between the pins and pin grooves on the clamping assembly of the clamping frame, fixing the clamping assembly with the clamp, and connecting the clamping frame with the connecting part of the sample unit.

8. The method for testing wet adhesion of clothing materials as claimed in claim 1, characterized in that: In the dynamic simulation, the amount of water added to the sweat unit is set to 10ml to 15ml.

9. The method for testing wet adhesion of clothing materials according to claim 8, characterized in that: In the dynamic simulation, the sample unit needs to be left to stand for a period of time before being moved away from the subject's forearm.

10. The method for testing wet adhesion of clothing materials according to claim 9, characterized in that: In the dynamic simulation, the water addition volume of the sweating unit is set to 10 ml to 15 ml, the water addition speed is set to 4 ml / min to 6 ml / min, the initial load of the sample unit is set to 4 cN to 6 cN, the standing time is set to 8 s to 12 s, the separation speed of the sample unit is set to 8 mm / min to 12 mm / min, and the separation distance between the sample and the arm is set to 25 mm to 35 mm.

11. The method for testing wet adhesion of clothing materials according to claim 1, characterized in that: During the experimental preparation, the temperature of the experimental environment was set to 28°C to 32°C, and the humidity was set to 57% to 63%.

12. The method for testing wet adhesion of clothing materials according to any one of claims 1 to 11, characterized in that: The experimental preparation also includes collecting the subjects' skin condition information, which includes whether they have a history of skin diseases, a history of laser hair removal, scars, and recent body hair treatment.

13. A device for testing the wet adhesion of clothing, used for implementing the method for testing the wet adhesion of clothing as claimed in any one of claims 1 to 12, characterized in that: The invention comprises a power unit, a sample unit, a sweating unit and an arm unit. The arm unit is used for placing a human arm. The sweating unit is relatively arranged at one side of the arm unit. The sweating unit can simulate the sweating effect of the human arm on the arm unit. The sample unit is relatively arranged at the other side of the arm unit. The power unit is connected with the sample unit. The power unit can adjust the distance between the sample unit and the arm unit so that the clothes to be tested on the sample unit and the human arm on the arm unit can be attached to and separated from each other.

14. The wet adhesion testing device for clothing as claimed in claim 13, characterized in that: The support arm unit comprises a supporting portion and a gripping assembly which are arranged opposite to each other, and the distance between the supporting portion and the gripping assembly is adjustable.

15. The wet adhesion testing device for clothing as claimed in claim 14, characterized in that: The holding assembly includes a handle, a first distance adjusting plate and a second distance adjusting plate which are movably connected in sequence. The first distance adjusting plate has a first track so that the handle can move back and forth in a first direction on the first distance adjusting plate. The second distance adjusting plate has a second track so that the first distance adjusting plate can move back and forth in a second direction on the second distance adjusting plate.

16. The wet adhesion testing device for clothing as claimed in claim 15, characterized in that: The arm support unit also includes a wrist support part and a first adjusting rod. The wrist support part is located between the supporting part and the handle. The wrist support part and the second distance adjustment plate are connected through the first adjusting rod to support the wrist joint of the human forearm.

17. The wet adhesion testing device for clothing as claimed in claim 13, characterized in that: The sample unit comprises a detachably connected clamping frame and a connecting part, and the clamping frame is connected to the power unit through the connecting part.

18. The wet adhesion testing device for clothing as claimed in claim 17, characterized in that: The clamping frame also includes a clamping assembly and two clamps. The clamping assembly includes a rod body and a clamping plate. One of the rod body and the clamping plate is provided with a plurality of nail grooves, and the other of the rod body and the clamping plate is provided with a plurality of nails, and the nails are arranged corresponding to the nail grooves. The two clamps are respectively arranged at both ends of the clamping assembly.

19. The wet adhesion testing device for clothing as claimed in claim 13, characterized in that: The sweating unit includes a water bath, a first water pump and a water spray assembly which are connected in sequence. The water spray assembly includes a water storage tank, a water suction pipe, a second water pump, a water outlet pipe and a water spray pipe. The second water pump is connected to the water storage tank through the water suction pipe, and the second water pump is connected to the water spray pipe through the water outlet pipe. The water spray pipe and the water storage tank are arranged on both sides of the support arm unit opposite to each other.

20. The wet adhesion testing device for clothing as claimed in claim 13, characterized in that: The power unit includes a first transmission component and a second transmission component that are connected and arranged. The first transmission component can drive the sample unit to reciprocate along the first direction, and the second transmission component can drive the sample unit to reciprocate along the second direction. The first transmission component includes a first motor, a first screw rod, a first slide rail, a first bearing sheet and a first slider. The first motor and the first bearing sheet are respectively arranged at the two ends of the first slide rail, and the two ends of the first screw rod are respectively connected to the first motor and the first bearing sheet, and the first slider is sleeved on the first screw rod; the second transmission component includes a second motor, a second screw rod, a second slide rail, a second bearing sheet and a second slider. The second motor and the second bearing sheet are respectively arranged at the two ends of the second slide rail, and the two ends of the second screw rod are respectively connected to the second motor and the second bearing sheet, the second slider is sleeved on the second screw rod, and the second slide rail is fixedly connected to the first slider.

21. The wet adhesion testing device for clothing materials according to any one of claims 13 to 20, characterized in that: The device also includes a force measuring unit and a collection system. The force measuring unit is connected to the power unit, and the force measuring unit is electrically connected to the collection system.

22. The wet adhesion testing device for clothing as claimed in claim 21, characterized in that: The force measuring unit is configured as a force sensor.

23. The wet adhesion testing device for clothing as claimed in claim 21, characterized in that: The device also includes a control system, and the power unit, the sweating unit and the collection system are electrically connected to the control system respectively.

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