Apparatus for testing the permeability of hot air nonwoven hydrophilic products

Abstract

The application is a permeability testing device for hot air non-woven hydrophilic products, comprising a water tank cover, a lower water tank, and a water tank cover and a lower water tank are movably connected, and the two can be buckled together, a water inlet is arranged on the upper part of the water tank cover, spunlaced cloth is laid on the open end of the lower water tank, and the spunlaced product is clamped and fixed between the lower water tank and the water tank cover after the water tank cover is closed; the volume of the lower water tank is greater than the maximum water amount of single permeability test, and the spunlaced cloth has a space for laying hot air non-woven hydrophilic products above. The testing device is designed as a visible water tank with a water tank cover having a large water inlet that can be opened and closed, and the water tank cover and the lower water tank are made of transparent materials, so that the whole experiment process can be easily and clearly observed, which is very helpful for observing the hydrophilic and permeability effect of the product.

Description

(I) TECHNICAL FIELD

[0001] The present application relates to a kind of hot air nonwoven hydrophilic product penetration performance testing device, which is especially suitable for hydrophilic and rapid sustained penetration performance test of hot air nonwoven hydrophilic product. (II) BACKGROUND

[0002] Because the fiber used in hot air nonwoven hydrophilic product is skin-core (PE / PET or PE / PP) composite fiber, ES fiber, skin-core (PE / PET or PE / PP) composite fiber, ES fiber contains hydrophilic oil agent, the hydrophilic oil agent of skin-core (PE / PET or PE / PP) composite fiber, ES fiber may change with temperature during production process, and part of the oil agent may be transferred, and after transfer, it does not have hydrophilic function or the hydrophilic performance is reduced, so it is necessary to carry out hydrophilic test, i.e. to carry out sustained penetration performance experiment. In order to test the rapid hydrophilic and sustained penetration performance of hot air nonwoven hydrophilic product, it is necessary to propose a kind of penetration performance testing device. (III) SUMMARY

[0003] The purpose of the present application is to provide a kind of hot air nonwoven hydrophilic product penetration performance testing device, which can better test the penetration of hot air nonwoven hydrophilic product.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is:

[0005] In the first aspect, the present application provides a kind of hot air nonwoven hydrophilic product penetration performance testing device, including a visible water tank with water tank cover, water inlet is arranged on the upper surface of water tank cover, and water tank cover can be opened.

[0006] The area of water inlet is not less than 1 / 3 of the cross-sectional area of water tank cover, which can be used for tester to go in and out.

[0007] In the second aspect, the present application provides a kind of hot air nonwoven hydrophilic product penetration performance testing device, including water tank cover 2 and lower water tank 3, the lower water tank and water tank cover are movably connected, and the two can be buckled together, water inlet is arranged on the upper part of the water tank cover, spunlaced cloth is laid on the open end of the lower water tank, and the spunlaced product is clamped and fixed between the lower water tank and the water tank cover after the water tank cover is closed;The volume of lower water tank is greater than the maximum water amount of single penetration test, and there is a space for laying hot air nonwoven hydrophilic product above spunlaced cloth.

[0008] The size of the spunbonded fabric is greater than the size of the opening of the lower water tank, so that the closure of the lower water tank and the water tank cover can clamp the spunbonded fabric; the side surface of the water tank cover is composed of two layers of frame plates inside and outside, and the height of the outer frame plate is 1-2 cm higher than that of the inner frame plate; the length and width size of the outer frame plate of the water tank cover = the length and width size of the lower water tank + the thickness of the frame plate + 3 mm; the frame plate has a thickness of not less than 6 mm; the water tank cover 2 is a hollow flat cuboid, the lower water tank 3 is an upper opening type cuboid structure, and the upper opening of the lower water tank is just covered by the water tank cover; the water tank cover and the lower water tank are both provided with a visible transparent window.

[0009] The water tank cover and the lower water tank are both made of transparent material, including organic glass plate or acrylic plate.

[0010] The water tank cover and the lower water tank are linked together through at least two door hinges, realizing the lifting and closing of the water tank cover; or a groove is arranged on the lower edge of the water tank cover; a convex platform is arranged on the edge of the upper opening of the lower water tank, matched with the groove of the water tank cover, and the convex platform and the groove are matched;

[0011] The volume of the lower water tank is 10-30 mL.

[0012] In a third aspect, the present application provides a device for testing the permeability of hot air non-woven hydrophilic products, comprising a water tank cover 2 and a lower water tank, and the water tank cover is closed on the lower water tank, characterized in that the water tank cover 1 comprises upper and lower layer structures, the upper layer of the water tank cover is a measuring tank 8, the capacity of which is greater than the maximum water amount for single permeability test, and a scale is marked on the measuring tank along the height direction, the upper end of the measuring tank is open, and the lower end is provided with an opening, the size of which can allow the hand to enter and exit.

[0013] The lower layer of the water tank cover is a cuboid structure with an open lower end, and an opening with the same size as the opening of the upper layer is arranged on the upper surface of the lower layer, the upper layer covers the lower layer, and at this time the opening of the upper layer and the opening of the lower layer coincide to form a water inlet;

[0014] A sliding plate switch door 10 is arranged on the lower surface of the lower layer opening, the area of the sliding plate switch door 10 can completely cover the water inlet, a sealing ring 17 is embedded on the upper surface of the sliding plate switch door around, and the sliding plate switch door is tightly attached to the lower surface of the water inlet;

[0015] A sliding handle 11 is arranged on one side surface of the sliding plate switch door, one end of the sliding handle 11 is fixedly installed with a control rod 12; the diameter of the control rod is much smaller than that of the sliding handle 11, a part of the sliding handle is located inside the lower layer, and a part of the sliding handle is located outside the lower layer, the control rod is located inside the lower layer, a timer 9 is arranged on the adjacent inner wall of the lower layer perpendicular to the control rod 12, and the trigger switch button of the timer 9 is at the same height as the end of the control rod 12;

[0016] The position of the sliding plate switch door 10 when completely covering the water inlet is the initial position, and a closing mark is arranged on the outer surface of the exposed side surface of the lower sliding handle in the initial position; the sliding plate switch door slides to the position when the water inlet is completely open, which is the final position, and an opening mark is arranged on the outer surface of the exposed sliding handle 11 of the lower layer in the final position, and the final position is located on the side close to the timer; the moving distance from the initial position to the final position is equal to the distance from the joystick to the trigger switch button of the timer.

[0017] The lower water tank 3 is an upper opening type rectangular box structure, and the upper opening of the lower water tank can be covered by the water tank cover, so that the lower water tank and the water tank cover form a closed whole, and the capacity of the lower water tank is greater than the maximum water amount of single permeability test; spunlaced cloth is laid on the opening end of the lower water tank, and the spunlaced cloth is clamped and fixed between the lower water tank and the water tank cover after the water tank cover is covered, and the hot air non-woven hydrophilic product to be tested is stacked in the middle region of the spunlaced cloth.

[0018] An adjusting bolt 14 and a locking nut 13 are arranged on the end of the joystick 12 away from the handle, and the adjusting bolt 14 and the joystick 12 can be fastened together through the locking nut.

[0019] The upper layer and the lower layer of the water tank cover 1 are integrated structures, and the two are separated by a middle partition plate, and a water inlet for a hand to enter and exit the stacked hot air hydrophilic product and observe the water flow condition is formed on the middle partition plate.

[0020] The hot air non-woven hydrophilic product is a hot air ES hydrophilic product or a hot air skin-core composite fiber hydrophilic product; and the spunlaced product is polypropylene (PP) spunlaced cloth with a width of 26-30 cm.

[0021] Compared with the prior art, the present application has the following beneficial effects:

[0022] The test device of the present application is designed as a visible water tank with a water tank cover having a large water inlet that can be opened and closed, and the water tank cover and the lower water tank are made of transparent materials, so that the whole experimental process can be easily and clearly observed, which is very helpful for checking the hydrophilic and permeability effects of the product.

[0023] The lower water tank is provided with a large capacity to facilitate the testing of the hot air non-woven hydrophilic product with multiple hydrophilic and rapid permeability properties. Because the ES fiber and non-woven fabric used in the hot air non-woven hydrophilic product have multiple functions such as multiple hydrophilic, rapid permeability, high efficiency antibacterial, weak acid (can neutralize urine ammonia), softness, smoothness, etc., the hydrophilic product of the ES fiber in the hot air non-woven product is controlled, and the oil agent is applied to baby paper diapers, which can effectively reduce the probability of diaper rash.

[0024] The preferred implementation manner of the present application can realize the function of automatic timing measurement. (IV) DESCRIPTION OF DRAWINGS

[0025] Figure 1 Figure 1 is a schematic view of the structure of the water tank cover in one embodiment of the permeability testing device for hot air nonwoven hydrophilic products.

[0026] Figure 2 Figure 2 is a schematic view of the structure of the lower water tank in one embodiment of the permeability testing device for hot air nonwoven hydrophilic products.

[0027] Figure 3 Figure 3 is a schematic view of the structure of the metering tank in embodiment 9.

[0028] Figure 4 Figure 4 is a schematic view of the structure of the lower layer of the water tank cover in embodiment 9.

[0029] Figure 5 Figure 5 is a schematic view of the installation structure of the joystick, sliding handle, and sliding plate door switch in embodiment 9.

[0030] In the figure: 1, water inlet; 2, water tank cover; 3, lower water tank; 4-7, door hinge installation position; 8, metering tank; 9, timer; 10, sliding plate door switch; 11, sliding handle; 12, joystick; 13, locking nut; 14, adjusting bolt; 15, middle partition plate; 16, sliding groove; 17, sealing ring. (V) DETAILED DESCRIPTION

[0031] The application will be further explained in conjunction with the embodiments and the accompanying drawings, but it is not intended to limit the scope of protection of the present application.

[0032] In addition, it should be noted that only the parts related to the application are shown in the drawings. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0033] The permeability testing device for hot air nonwoven hydrophilic products comprises a water tank cover 2 and a lower water tank 3, which are movably connected between each other and can be buckled together. A water inlet is arranged at the upper part of the water tank cover. A spunbonded cloth is laid on the open end of the lower water tank. The spunbonded cloth is clamped and fixed between the lower water tank and the water tank cover after the water tank cover is closed.

[0034] The size of the spunbonded cloth is slightly larger than the opening size of the lower water tank, so that the clamping action of the lower water tank and the water tank cover on the spunbonded cloth can be achieved.

[0035] The side surface of the water tank cover is composed of two layers of frame plates, and the height of the outer frame plate is 1-2 cm higher than that of the inner frame plate. When the water tank cover is placed on the lower water tank, the outer frame plates of the upper and lower water tanks can be staggered to clamp the spunbond fabric in the gap between the frame plates of the lower water tank and the water tank cover.

[0036] The water tank cover and the lower water tank are connected by two (or more) door hinges, which can realize the lifting and closing of the water tank cover. The size of the water inlet is large enough for a hand to pass through. The water inlet is used for water filling and placing the hot air nonwoven hydrophilic product through the water inlet. The square water inlet with the largest size is used for water filling during experiments, which can facilitate water filling and observation of water permeability.

[0037] The hot air nonwoven hydrophilic product is a hot air hydrophilic product; the spunbond fabric is a polypropylene (PP) spunbond fabric or other spunbond product, with a width of about 26.2 cm, produced in rolls, and a length not limited, covering the upper opening of the lower water tank.

[0038] In Example 1, the water tank cover 2 is a hollow flat cuboid with an open lower end, and a water inlet 1 is formed in the center of the upper surface of the water tank cover. The area of the water inlet is not less than 1 / 3 of the cross-sectional area of the water tank cover.

[0039] The lower water tank 3 is an upper opening type rectangular structure, and the upper opening of the lower water tank can be covered by the water tank cover, so that the lower water tank and the water tank cover form a closed whole. The capacity of the lower water tank is greater than the maximum water filling amount for single permeability test. The spunbond fabric is laid on the opening end of the lower water tank, and the spunbond fabric is clamped and fixed between the lower water tank and the water tank cover after the water tank cover is closed. The hot air nonwoven hydrophilic product to be tested is stacked in the middle region of the spunbond fabric.

[0040] The water tank cover and the lower water tank are made of transparent material. During the permeability test, the water tank cover is opened, the spunbond fabric is laid flat on the diameter of the upper opening of the lower water tank, the lower part of the water tank cover is placed on the lower water tank, and the water inlet of the water tank cover faces upwards. In this way, the spunbond fabric is directly laid flat on the diameter of the lower water tank, and the spunbond fabric is clamped and fixed in the middle by the water tank cover and the lower water tank. Then, the hot air nonwoven hydrophilic product is folded and placed on the spunbond fabric through the water inlet. 4 ml of water is quickly added to the hot air nonwoven hydrophilic product through the water inlet on the water tank cover. After water is added, the time for water to permeate through the spunbond fabric is immediately observed and recorded.

[0041] In Example 2, the structures of the parts are the same as those in Example 1, except that the water tank cover and the lower water tank are connected by door hinges on one side, which can be rotatably connected together. The manufacturing process is as follows:

[0042] 1) The side frame of the water tank cover is made of two layers, the inner layer has the same length and width as the lower water tank, so that when the water tank cover covers the lower water tank, the bottom section of the inner layer of the water tank cover overlaps and presses the upper diameter of the lower water tank. The length and width of the outer layer of the water tank cover is equal to the length and width of the lower water tank plus the thickness of the frame plate plus 3mm (i.e. when the diameter of the lower water tank is 23cm long and 18cm wide, the length and width of the inner layer of the water tank cover is 23cm and 18cm, and the length and width of the outer layer of the water tank cover is 23.9cm and 18.9cm). In this way, after the upper water tank cover is placed, the inner layer of the water tank cover overlaps and presses the lower water tank, and the outer layer of the water tank cover can be interlaced with the diameter of the lower water tank, so that the spunlaid product laid on the lower water tank can be pressed tightly between the upper and lower water tanks.

[0043] In this embodiment, the frame plate is a transparent organic glass plate with a thickness of 6mm (or greater than 6mm), the side of the water tank cover is made of two layers of organic glass plates, the height of the inner and outer layers of the organic glass plates is different, the depth of the inner layer of the organic glass plate is 5cm, the depth of the outer layer of the organic glass plate is 6cm, and the height difference between the inner and outer layers forms a groove structure.

[0044] 2) A rectangular hole with a length of 20cm and a width of 16cm is opened in the middle of the water tank cover as a water inlet 1, so that after the spunlaid cloth and the hot air nonwoven hydrophilic product are laid, the water tank cover 2 can be closed to facilitate water filling and observation of the product penetration phenomenon.

[0045] 3) Two pairs of door hinges are used to link the lower water tank and the water tank cover into an upper and lower structure of a water tank, so that the water tank cover can be freely opened and closed by the two pairs of hinges. The door hinge mounting positions 4-7 on the lower water tank and the water tank cover are shown in the figure, which are located on the outer walls of the adjacent sides of the lower water tank and the water tank cover.

[0046] 4) Glass glue is used to seal all the frame plate joints in the water storage space of the water tank to prevent water from leaking out of the joints during each experiment.

[0047] Example 3, the structure of each part of the embodiment is the same as that of Example 1, except that the volume of the lower water tank is 10 mL, the upper water tank and the lower water tank are both made of transparent organic glass plates or acrylic plates with a thickness of 6 mm, at least two front surfaces of the water tank cover and the lower water tank are in a transparent state, or a viewing window is added on at least two front surfaces, so that the penetration of the product during water addition can be observed at any time during the experiment, the water addition port reserved on the water tank cover can quickly add experimental water on the two layers of non-woven product (composed of spunbond and through-air non-woven hydrophilic product), and the instant penetration of the spunbond product can be observed through the viewing window on the two front surfaces, so that the penetration experiment can be completed, and the hydrophilic performance of the through-air non-woven hydrophilic product can be obtained through the penetration experiment effect, and the purpose of testing the hydrophilic performance and rapid penetration performance is achieved.

[0048] When performing the penetration performance test experiment, first open the water tank cover, lay the spunbond product flat on the caliber of the lower water tank, and then cover the water tank cover on the lower water tank, the spunbond cloth is clamped in the middle of the water tank cover and the water tank, so that the spunbond product is clamped in the middle and fixed, then fold the through-air non-woven hydrophilic product and place it on the spunbond product from the water addition port, and quickly add water from the water addition port above the water tank cover to observe and record the water penetration time. Because the through-air non-woven hydrophilic product is light in weight, relatively fluffy, and has good elasticity, it will bounce up to a certain height after being folded, so after clamping the spunbond product, the through-air non-woven hydrophilic product is placed on the spunbond product from the water addition port, which is convenient for limiting the through-air non-woven hydrophilic product

[0049] Example 4, the structure of each part of the embodiment is the same as that of Example 1, a groove is arranged on the lower edge of the water tank cover; a convex boss is arranged on the edge of the upper opening of the lower water tank, which cooperates with the groove on the water tank cover, and the convex boss and the groove cooperate to more firmly fix the spunbond cloth on the caliber of the upper opening of the lower water tank, so that the spunbond cloth will not be separated from the clamping action of the water tank cover and the lower water tank under the action of water gravity.

[0050] Example 5, the structure of each part of the embodiment is the same as that of Example 1, the wall thickness of the lower water tank is greater than that of the water tank cover, so that the water tank cover is just buckled on the lower water tank, the size of the spunbond cloth is greater than the caliber of the upper opening of the lower water tank, and extends a distance to the side surface of the outer surface of the lower water tank, the upper and lower water tanks are detachably fixed together through a buckle structure, and the joint position is sealed.

[0051] Example 6, the structure of each part of the embodiment is the same as that of Example 1, a handle that can be opened and closed is arranged on the water tank cover.

[0052] Example 7, the structure of each part of the embodiment is the same as that of Example 1, the volume of the lower water tank is 20 mL, and the water addition amount for a single penetration experiment is 4 mL, and the test device of the embodiment can perform multiple penetration experiments on the same product.

[0053] Embodiment 8, the permeability testing device of this embodiment is used to test the hydrophilic property of the hot air nonwoven hydrophilic product used to make the paper diaper, the shorter the permeation time, the better the hydrophilic property of the hot air nonwoven hydrophilic product. The paper diaper includes a four-layer structure, which is a water-repellent layer, a hydrophilic layer, a composite core and a waterproof film layer, the water-repellent layer is close to the human skin, the hydrophilic layer is the hot air nonwoven hydrophilic product, the rapid permeation of the hydrophilic product can be guided into the composite core, and the composite core can be absorbed to ensure the skin dry.

[0054] Embodiment 9, the permeability testing device of the hot air nonwoven hydrophilic product of this embodiment includes a water tank cover 2 and a lower water tank, the water tank cover 1 is divided into upper and lower structures by a middle partition plate 15, the upper layer of the water tank cover is a measuring tank 8 (see Figure 3 ), the capacity is greater than the maximum water amount of single permeability test, and can be equal to the capacity of the lower water tank, and the capacity of the measuring tank in this embodiment is 10ml, and a scale is marked on the measuring tank along the height direction, so that the actual water amount in the measuring tank can be obviously observed. The upper end of the measuring tank is open, and the lower end is provided with an opening, and the size of the opening can allow a hand to enter and exit.

[0055] The lower layer of the water tank cover is a rectangular structure with an open lower end, and an opening with the same size is formed on the upper surface of the lower layer corresponding to the opening position of the upper layer. The upper layer covers the lower layer, and at this time the opening of the upper layer and the opening of the lower layer coincide to form a water inlet.

[0056] A sliding switch door 10 is arranged on the lower surface of the lower layer opening, the area of the sliding switch door 10 can completely cover the water inlet, and the sliding switch door is close to the lower surface of the water inlet, and a sealing ring 17 is embedded on the upper surface of the sliding switch door around, so that when the sliding switch door covers the water inlet, no water remains.

[0057] A sliding handle 11 is arranged on one side of the sliding switch door, and a control rod 12 is mounted on the lower surface of the sliding handle 11; the diameter of the control rod is much smaller than that of the sliding handle 11, and the sliding handle is partially located in the lower layer and partially located outside the lower layer, and the control rod is located in the lower layer. A timer 9 is arranged on the adjacent inner wall of the lower layer perpendicular to the control rod 12, and the trigger switch button of the timer 9 is at the same height as the end of the control rod 12; the sliding handle moves, which drives the sliding switch door and the control rod to move together.

[0058] An adjusting bolt 14 and a locking nut 13 are arranged on the end of the operating lever 12 away from the handle, the adjusting bolt 14 is fastened with the operating lever 12 through the locking nut, and the length of the adjusting bolt 14 extending outwards can be adjusted by loosening the locking nut. When the operating lever cannot press the trigger switch button of the timer, the adjusting bolt can be extended outwards, so that the sliding plate switch door can completely cover the water inlet when the operating lever can press the trigger switch button. If the sliding plate switch door covers the water inlet completely before the operating lever presses the trigger switch button, the adjusting bolt needs to be appropriately retracted inwards, so that the sliding plate switch door can completely cover the water inlet when the operating lever can press the trigger switch button. The relative installation distance between the adjusting bolt and the operating lever is determined through debugging before the experiment starts.

[0059] The position of the sliding plate switch door 10 completely covering the water inlet is the initial position, and a closing mark is arranged on the outer surface of the exposed side surface of the lower sliding handle in the initial position. The sliding plate switch door completely opens to cover the water inlet, which is the final position, and an opening mark is arranged on the outer surface of the exposed sliding handle 11 of the lower layer in the final position, and the final position is located on the side close to the timer. The moving distance from the initial position to the final position is equal to the distance from the operating lever to the trigger switch button of the timer.

[0060] A sliding groove for moving from the initial position to the final position is arranged on the side surface of the exposed sliding handle of the lower layer, which provides space and a sliding track for the sliding handle 11 to move. The sliding plate switch door 10 moves from the side away from the timer to the side close to the timer.

[0061] The lower water tank 3 is a rectangular box structure with an upper opening, and the upper opening of the lower water tank can be covered by the water tank cover, so that the lower water tank and the water tank cover form a sealed whole. The capacity of the lower water tank is greater than the maximum water amount of a single permeability test. Spunbond cloth is laid on the opening end of the lower water tank, and the spunbond cloth is clamped and fixed between the lower water tank and the water tank cover after the water tank cover is covered. The hot air nonwoven hydrophilic product to be tested is stacked in the middle region of the spunbond cloth.

[0062] Example 10

[0063] This embodiment is optimized on the basis of example 9, and the upper layer and the lower layer are integrated structures, which are divided into upper and lower spaces by the middle partition plate. A sliding track groove 16 is cut on the front view plate of the water tank cover below the middle partition plate along the moving direction of the sliding plate door. In this embodiment, the moving direction of the sliding plate door is the left-right direction in the figure, and the sliding plate switch door 10 slides left and right. Figure 4

[0064] ​In order to ensure that the sliding plate switch door is in the closed state without water leakage, the upper surface of the sliding plate switch door is embedded with a sealing ring 17 around the perimeter, and the sliding plate switch door 10 can slide left and right in the sliding groove 16 to open and close the water inlet 1. The left side of the sliding plate switch door 10 is installed with a control rod 12 made of a plastic rod or nylon rod with a diameter of 8 mm. The right end of the control rod 12 is connected and fixed with a sliding handle 11.

[0065] A timer 9 is installed horizontally on the lower left frame plate of the water tank cover near the front view position. The switch button position of the timer is installed at a vertical 90-degree angle position with the control rod 12.

[0066] An adjusting bolt 14 is installed at the left end of the control rod. The adjusting bolt can more accurately control the timing trigger switch. A 10mm deep hole is drilled in the center hole position of the left end of the control rod, and an M4 internal thread is tapped for M4 bolt installation. An M4*25 adjusting bolt 14 is installed at the left end, and an M4 locking nut 13 is installed on the adjusting bolt for locking the adjusting screw. The length of the control rod can be changed by adjusting the position of the adjusting bolt and the M4 locking nut. When the sliding plate switch door 10 is completely opened, the water in the metering tank automatically starts to fill the lower layer of the water tank cover through the water inlet. At this time, the left end M4 locking bolt cap just touches the switch button of the timer 9, and the timer 9 starts timing.

[0067] The switch point indication position can be pasted on the front view frame plate of the lower layer of the water tank cover. When the indication arrow points to the open point indication position, the sliding plate switch door 10 slides to the leftmost side, and the water inlet 1 is completely opened to start filling water. At this time, the adjusting bolt 14 of the timing control rod 12 just touches the trigger switch button of the timer 9, and the timer 9 starts timing. When the indication arrow points to the closing point indication position, the sliding plate switch door is slid to the rightmost side, and the water inlet 1 is in the closed state to ensure that the water inlet does not leak into the lower tank.

[0068] When the experiment starts to fill water and time, the sliding plate switch door 10 is slid to the rightmost side by the sliding handle 11, and the water filling and timing can be completed. When the sliding plate switch door slides to the leftmost side, the adjusting bolt 14 of the control rod 12 just touches the timing switch of the timer 9, and the timer starts timing. The sliding of the control rod from the initial position to the final position is completed quickly, and the water released during the gradual expansion of the water inlet is negligible.

[0069] The above description is only the preferred embodiment of the present application and the explanation of the technical principles applied. It should be understood by those skilled in the art that the protective scope of the present application is not limited to the technical solutions formed by the specific combinations of the technical features described above, and should also cover other technical solutions formed by the combinations of the technical features described above or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by the mutual replacement of the above features and the technical features disclosed in the present application (but not limited to) with similar functions.

[0070] The unmentioned parts of the present application apply to the prior art.

Claims

1. A device for testing the permeability of a hot air nonwoven hydrophilic product, comprising a water tank cover, a lower water tank, characterized in that, The lower water tank and the water tank cover are movably connected and can be buckled together, the water tank cover is provided with a water inlet at the upper portion, a spunbond product is laid on the opening end of the lower water tank, and the spunbond product is clamped and fixed between the lower water tank and the water tank cover after the water tank cover is covered; the volume of the lower water tank is greater than the maximum water amount for single permeability test, and a space for laying a hot air nonwoven hydrophilic product is provided above the spunbond product; The water tank cover and the lower water tank are made of transparent materials, when the permeability test is performed, the water tank cover is first opened, the spunbond product is laid on the opening of the lower water tank, the lower portion of the water tank cover is covered on the lower water tank, and the water inlet of the water tank cover faces upward, so that the spunbond product is directly laid on the opening of the lower water tank, the spunbond product is clamped and fixed by the water tank cover and the lower water tank, then the hot air nonwoven hydrophilic product is folded and placed on the spunbond product from the water inlet, 4ml water is quickly added on the hot air nonwoven hydrophilic product at the water inlet above the water tank cover, and the continuous permeation time of water permeating through the spunbond product is recorded immediately after the water is added; The instantaneous permeation of the spunbond product is observed, and the permeation test is completed.

2. The hot air nonwoven hydrophilic product permeability test apparatus according to claim 1, characterized by, The size of the spunbond product is greater than the opening size of the lower water tank, so that the buckling of the lower water tank and the water tank cover can clamp the spunbond product; the side surface of the water tank cover is composed of two layers of frame plates, and the height of the outer frame plate is 1-2cm higher than that of the inner frame plate; the length and width of the outer frame plate of the water tank cover = the length and width of the lower water tank + the thickness of the frame plate + 3mm; the thickness of the frame plate is not less than 6mm; the water tank cover is a hollow flat cuboid, the lower water tank is an upper opening type cuboid structure, and the upper opening of the lower water tank can be covered by the water tank cover; a visible transparent window is arranged on the water tank cover and the lower water tank.

3. The hot air nonwoven hydrophilic product permeability test apparatus according to claim 1, characterized by, The water tank cover and the lower water tank are linked together through at least two door hinges, so as to realize the lifting and closing of the water tank cover; or a groove is arranged on the lower edge of the water tank cover; a convex platform is arranged on the edge of the upper opening of the lower water tank, and the convex platform cooperates with the groove of the water tank cover; The volume of the lower water tank is 10-30ml.

4. A device for testing the permeability of a through-air-bonded nonwoven hydrophilic product, comprising a water tank cover and a lower water tank, the water tank cover being fitted on the lower water tank, characterized in that, The water tank cover includes upper and lower layers, the upper layer of the water tank cover is a measuring tank, the capacity of which is greater than the maximum water amount for single permeability test, and a scale is marked on the measuring tank along the height direction, the upper end of the measuring tank is open, and the lower end is provided with an opening, the size of which can allow a hand to enter and exit; The lower layer of the water tank cover is a cuboid structure with an open lower end, an opening with the same size as the opening of the upper layer is arranged on the upper surface of the lower layer, and the upper layer covers the lower layer, so that the openings of the upper layer and the lower layer coincide to form a water inlet; A sliding plate switch door is arranged on the lower surface of the lower layer opening, the area of the sliding plate switch door can completely cover the water inlet, a sealing ring is embedded on the upper surface of the sliding plate switch door, and the sliding plate switch door tightly abuts against the lower surface of the water inlet; The sliding handle is fixedly installed with a control lever at one end; the diameter of the control lever is much smaller than that of the sliding handle; one part of the sliding handle is located outside the lower layer, and the other part is located inside the lower layer; a timer is arranged on the adjacent inner wall of the lower layer perpendicular to the control lever; the trigger switch button of the timer is at the same height as the end of the control lever; The initial position is when the sliding door completely covers the water inlet; a closing mark is arranged on the outer surface of the exposed side of the sliding handle in the lower layer; the final position is when the sliding door is fully opened; an opening mark is arranged on the outer surface of the exposed sliding handle in the lower layer; the final position is located on the side close to the timer; the moving distance from the initial position to the final position is equal to the distance from the control lever to the trigger switch button of the timer; The lower water tank is an upper-opening rectangular structure; the upper opening of the lower water tank is just covered by the water tank cover, so that the lower water tank and the water tank cover form a closed whole; the capacity of the lower water tank is greater than the maximum water amount of single permeability test; spunbond cloth is laid on the opening end of the lower water tank; the spunbond cloth is clamped and fixed between the lower water tank and the water tank cover after the water tank cover is closed; the hot air nonwoven hydrophilic product to be tested is stacked in the middle area of the spunbond cloth; The water tank cover and the lower water tank are made of transparent material; during the permeability test, first, the water tank cover is opened, the spunbond cloth is laid flat on the caliber of the upper opening of the lower water tank, the lower part of the water tank cover is covered on the lower water tank, and the water inlet of the water tank cover faces upwards; in this way, the spunbond cloth is directly laid flat on the caliber of the lower water tank, and the spunbond cloth is clamped and fixed by the water tank cover and the lower water tank; then, the hot air nonwoven hydrophilic product is folded and placed on the spunbond cloth from the water inlet; 4ml of water is quickly added to the hot air nonwoven hydrophilic product at the water inlet above the water tank cover; after the water is added, the continuous permeation time of the water permeating through the spunbond cloth is immediately recorded; The instantaneous permeation of the spunbond product is observed, and the test permeation experiment is completed.

5. The hot air nonwoven hydrophilic product permeability test apparatus according to claim 4, characterized by An adjusting bolt and a locking nut are arranged on the end of the control lever away from the handle; the adjusting bolt and the control lever are fastened together by the locking nut.

6. The hot air nonwoven hydrophilic product permeability test apparatus according to claim 4, characterized by The upper layer and the lower layer of the water tank cover are integrated structures, which are separated by a middle partition plate; a water inlet is arranged on the middle partition plate, which can be used for a person to put in and take out the hot air hydrophilic product and observe the water flow.

7. The hot air nonwoven hydrophilic product permeability test apparatus according to claim 4, characterized by The area of the water inlet is not less than 1 / 3 of the cross-sectional area of the water tank cover, which can be used for the tester to put in and take out.

8. The apparatus for testing the permeability of a through-air-bonded hydrophilic nonwoven product according to any of claims 1 to 7, characterized in that The hot air nonwoven hydrophilic product is a hot air ES hydrophilic product or a hot air skin-core composite fiber hydrophilic product; the spunbond product is a polypropylene (PP) spunbond cloth with a width of 26-30cm.

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