A disposable aerospace absorbent product containing odor-free fine-denier spandex yarn and a preparation method thereof

Abstract

The invention relates to disposable sanitary products, and provides a space disposable absorbent product containing odor-free fine-denier spandex yarn and a preparation method thereof. The main body comprises an elastic waistband, the elastic waistband comprises a plurality of spandex yarns, and the spandex yarns are added with a odor-free agent; and the elastic waistband has elastic band areas with different tension forces at multiple positions. The elastic waistband of the invention fits the waist of the human body, and each position is evenly stressed, and no marks are produced on the human body. The elastic waistband has a good fixing effect and is comfortable to wear. When astronauts are in a confined space, the odor-free agent can remove odors, maintain a good environment, and prevent astronauts from working in an environment with odors for a long time, thereby solving the technical problems that disposable sanitary products are prone to odor, the elastic waistband is uncomfortable to wear, and the fixing effect is poor.

Description

Technical Field

[0001] The invention relates to disposable sanitary products, in particular to a disposable aerospace absorbent product containing odor-free fine-denier spandex yarn and a preparation method thereof. Background Art

[0002] The elastic waistband of existing disposable sanitary products usually uses 100-300 spandex fibers as the rubber band material. The spandex fibers are in a multi-bundle structure and are compounded on the elastic waistband. When disposable sanitary products are worn on the human body, the waistband is prone to sweating, especially in the hot summer. Sweat enters the elastic waistband and easily produces odor. The human body will emit odor, especially in the aerospace field, where the working environment requirements are very high. The disposable sanitary products used by astronauts are prone to produce odors, and the odors are easy to fill the entire aerospace environment, making the entire environment in an odorous environment for a long time, affecting the work of astronauts and posing certain safety hazards.

[0003] When spandex yarns are added to an elastic waistband, they are usually arranged equidistantly. The tension of the spandex yarns at each location of the elastic waistband is the same, that is, the elasticity of each location of the elastic waistband is the same. However, the sizes of the human waist at different locations are different. The waist has an arc, and the circumference of the waist at the navel is often the largest. For locations with larger waist sizes, the elastic waistband exerts a greater force and is prone to leaving marks. For locations with smaller waist sizes, it is prone to loosening. The elastic waistband fails to fit the human body completely, and the forces exerted on each location are different, which is not only uncomfortable to wear, but also has a poor fixing effect.

[0004] Chinese patent application number: 202220283880.8 discloses a highly elastic adult diaper, the structure of which includes a diaper body, the diaper body is composed of a diaper core, a front waistband, a rear waistband, a fixing patch, and a fixing tape. The front waistband and the rear waistband are respectively connected to the upper and lower sides of the diaper core, the fixing patch is provided with two and the two fixing patches are respectively located on both sides of the front waistband, the fixing tape is located on the back of the rear waistband and the fixing tape matches the fixing patch, the front waistband and the rear waistband are both provided with spandex yarn in the inner cavity, with the number of spandex yarns being 14 and the thickness being 1100D, so as to achieve the retracted fit while maintaining sufficient elasticity, and the side leakage prevention strip can block the side leakage of excrement, prevent side leakage, and guide the excrement into the absorbent core for absorption by the guide groove, so as to achieve the effect of preventing side leakage. If the human body sweats, the sweat enters the elastic waist, which is easy to produce odor. The front and rear waistbands of the diaper have the same elastic force at all positions. For positions with larger waist dimensions, the elastic waistband exerts a greater force thereon, which is likely to leave marks. For positions with smaller waist dimensions, looseness tends to occur. The elastic waistband fails to fully fit the human body, and different positions are subjected to different forces, which is not only uncomfortable to wear, but also has a poor fixing effect. Summary of the invention

[0005] Therefore, in view of the above problems, the present invention provides a space disposable absorbent product containing odor-free fine-denier spandex yarn and a preparation method thereof, which solves the technical problems that disposable sanitary products are prone to odor, elastic waistbands are uncomfortable to wear, and have poor fixing effects.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A disposable aerospace absorbent containing odor-free fine-denier spandex yarns comprises a main body, wherein the main body comprises an elastic waistline, the elastic waistline comprises a plurality of spandex yarns, and a odor-free agent is added to the spandex yarns.

[0008] Further:

[0009] The elastic waist is provided with a first elastic band area, a second elastic band area, and a third elastic band area from top to bottom. The first elastic band area, the second elastic band area, and the third elastic band area respectively include a plurality of elastic bands, and the elastic bands include at least one spandex yarn. The tensioning force of the third elastic band area is greater than the tensioning force of the first elastic band area, and the tensioning force of the first elastic band area is greater than the tensioning force of the second elastic band area.

[0010] The elastic waist is provided with a first elastic zone, a second elastic zone, a third elastic zone, a fourth elastic zone and a fifth elastic zone from top to bottom, and the tension force is arranged in a descending order as follows: the fifth elastic zone, the fourth elastic zone, the third elastic zone, the first elastic zone and the second elastic zone.

[0011] The deodorizing agent is bamboo activated carbon or coconut shell activated carbon.

[0012] The main body comprises an upper non-woven fabric layer, a lower non-woven fabric layer and an absorbent core layer, and the spandex yarn is arranged between the upper non-woven fabric layer and the lower non-woven fabric layer.

[0013] The present invention also provides a method for preparing a disposable aerospace absorbent product containing odor-free fine-denier spandex yarns based on the above-mentioned method, comprising the following method:

[0014] (1) Manufacturing spandex yarn: When preparing the raw materials, the deodorizing agent is directly mixed with the PU masterbatch, and then sent into the extruder for melt extrusion, and then stretched, cooled, pulled, and shaped to form a deodorizing fine-denier spandex yarn;

[0015] (2) The driving mechanism drives the upper non-woven fabric and the lower non-woven fabric to be transported, and multiple unwinding rollers unwind the spandex yarn. The unwinding motor drives the unwinding roller to rotate, and each unwinding roller unwinds multiple spandex yarns. The spandex yarns of each unwinding roller pass through the tension detection mechanism respectively, and the spandex yarns are compounded on the top of the lower non-woven fabric; the tension detection mechanism includes three rotatable detection wheels, and the three detection wheels are provided with multiple annular ring grooves, each of which guides and conveys at least one spandex yarn, and one of the detection wheels is arranged on a mounting seat, and the mounting seat is connected to the frame through a pressure detection device; the pressure detection device detects the tension of the spandex yarn. When the tension is too large, the speed of the unwinding roller is increased, thereby reducing the tension of the spandex yarn. When the tension of the spandex yarn is too small, the unwinding speed is reduced, thereby increasing the tension of the spandex yarn, and adjusting the tension of the spandex yarn to about the set value; the tension of the spandex yarns of different unwinding rollers is different, and elastic band areas with different tensions are formed at multiple positions of the elastic waist;

[0016] (3) The upper non-woven fabric, the lower non-woven fabric and the absorbent core layer are laminated by a laminating roller.

[0017] Further:

[0018] There are three unwinding rollers, forming the first elastic zone, the second elastic zone, and the third elastic zone from top to bottom on the elastic waist. The tension in the second elastic zone is the smallest, and the tension in the third elastic zone is the largest.

[0019] There are five unwinding rollers, which respectively form the first elastic zone, the second elastic zone, the third elastic zone, the fourth elastic zone and the fifth elastic zone on the elastic waist from top to bottom, and the tension force is arranged in descending order as follows: the fifth elastic zone, the fourth elastic zone, the third elastic zone, the first elastic zone and the second elastic zone.

[0020] The unwinding roller is provided with a plurality of unwinding grooves, and each unwinding groove reels at least one spandex yarn.

[0021] It also includes at least one guide wheel rotatably arranged on the frame, the outer wall of the guide wheel is provided with a plurality of guide grooves, and a plurality of spandex yarns are located in a plurality of corresponding guide grooves for transmission.

[0022] By adopting the above technical solution, the beneficial effects of the present invention are:

[0023] The deodorant is added to the spandex yarn of the present invention, which has a good anti-odor function and can effectively prevent disposable sanitary products from generating odor. In particular, it is used in aerospace, and its working environment requirements are very high. Astronauts are in a confined space, and the deodorant can remove odors, maintain a good environment, and prevent astronauts from working in an environment with odors for a long time, thereby improving the aerospace working environment and the work efficiency of astronauts. Furthermore, the elastic forces of the first elastic band area, the second elastic band area, and the third elastic band area of ​​the elastic waist are different, and the elastic force of the second elastic band area in the middle is the smallest. Under normal circumstances, the length of the second elastic band area is the largest, and the second elastic band area is located at the human body's belly. The tension of the first elastic band area is the largest, and the circumference is the smallest under normal circumstances. It is located at the waist. The entire elastic waist fits the human body's waist, and each position is evenly stressed, and no marks will be left on the human body. marks, good fixing effect, and comfortable to wear; further, when the elastic waist is provided with the first elastic zone, the second elastic zone, the third elastic zone, the fourth elastic zone, and the fifth elastic zone from top to bottom, the fitting and fixing effect is better and the wearing is more comfortable; further, the spandex yarn of each unwinding roller can detect its tension through the tension detection device, and the tension is kept at about the set value by controlling the speed of the unwinding roller. After compounding, different elastic zones are formed at the elastic waist, so that the circumference of each position of the elastic waist is different, so that the design of the elastic waist is more in line with the human body structure, the comfort and stability are improved, and it has a good anti-falling function; further, the unwinding groove has a guiding function to prevent the spandex yarns from mixing and crossing together; further, the guide wheel has a guiding function, and the guide groove can prevent the spandex yarns from mixing and crossing together. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the disposable absorbent article of the present invention;

[0025] Figure 2 yes Figure 1 The expanded diagram of

[0026] Figure 3 is a cross-sectional view of the elastic waist;

[0027] Figure 4 It is a cross-sectional view of the main body absorption core layer;

[0028] Figure 5 It is a schematic diagram of the structure of an elastic waist with five elastic band areas;

[0029] Figure 6 It is a simplified structural diagram of the production device of the present invention;

[0030] Figure 7 It is a structural schematic diagram of the tension force detection mechanism;

[0031] Figure 8 It is a schematic diagram of the structure of the detection wheel;

[0032] Fig. 9 It is a schematic diagram of the structure of the unwinding roller;

[0033] Fig.10 It is a structural schematic diagram of the guide wheel;

[0034] Fig.11 It is a schematic diagram of another structure.

[0035] Fig.12 yes Fig.11 A simplified structural diagram of the production device of the main body;

[0036] Fig.13 It is a structural diagram of the moving mechanism. DETAILED DESCRIPTION

[0037] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0038] refer to Figures 1 to 10 The present embodiment provides a disposable aerospace absorbent containing odor-free fine-denier spandex yarns, comprising a body 1, wherein the body 1 comprises an elastic waistband 11, wherein the elastic waistband 11 comprises a plurality of spandex yarns 110, wherein the spandex yarns 110 are added with a deodorizing agent. The elastic waistband 11 is provided with a first elastic region 111, a second elastic region 112, and a third elastic region 113 from top to bottom, wherein the first elastic region 111, the second elastic region 112, and the third elastic region 113 respectively comprise a plurality of elastics, wherein the elastics comprise at least one spandex yarn 110, wherein the tension of the third elastic region 113 is greater than the tension of the first elastic region 111, and the tension of the first elastic region 111 is greater than the tension of the second elastic region 112. The body 1 comprises an upper non-woven fabric 12, a lower non-woven fabric 13, and an absorbent core layer 14, wherein the spandex yarns 110 are provided between the upper non-woven fabric 12 and the lower non-woven fabric 13.

[0039] The present invention also provides a method for preparing a disposable absorbent article containing the odor-free fine denier spandex yarn 110 described above, comprising the following method:

[0040] (1) Manufacturing spandex yarn 110: When preparing the raw materials, the deodorizing agent is directly mixed with the PU masterbatch, and then sent into the extruder for melt extrusion, and then stretched, cooled, pulled, and shaped to form a deodorizing fine denier spandex yarn 110;

[0041] (2) The driving mechanism 2 drives the upper non-woven fabric 12 and the lower non-woven fabric 13 to be transported, and the three unwinding rollers 3 unwind the spandex yarn 110. The unwinding rollers 3 are provided with a plurality of unwinding grooves 30, and each unwinding groove 30 rewinds at least one spandex yarn 110. The unwinding motor drives the unwinding rollers 3 to rotate, and each unwinding roller 3 unwinds a plurality of spandex yarns 110. The spandex yarns 110 of each unwinding roller 3 pass through the tension detection mechanism 4, and the glue spraying mechanism 5 sprays glue on the lower non-woven fabric 13 to compound the spandex yarn 110 on the top of the lower non-woven fabric 13; the tension detection mechanism 4 includes three rotatably arranged detection wheels 41, and the three detection wheels 41 are provided with a plurality of annular grooves 410, and each annular groove 410 guides and transports at least one spandex yarn 110. One of the detection wheels 41 is arranged on a mounting seat 42, and the mounting seat 42 is connected to the frame 6 through a pressure detection device 43; the pressure detection device 43 detects the tension of the spandex yarn 110. When the tension is too large, the speed of the unwinding roller 3 is increased, thereby reducing the tension of the spandex yarn 110. When the tension of the spandex yarn 110 is too small, the unwinding speed is reduced, thereby increasing the tension of the spandex yarn 110, and adjusting the tension of the spandex yarn 110 to about the set value; the tension of the spandex yarn 110 of different unwinding rollers 3 is different, and a first elastic band area 111, a second elastic band area 112, and a third elastic band area 113 are formed from top to bottom on the elastic waist 11, respectively, the tension of the second elastic band area 112 is the smallest, and the tension of the first elastic band area 111 is the largest.

[0042] (3) The upper nonwoven fabric 12 , the lower nonwoven fabric 13 , and the absorbent core layer 14 are laminated by a laminating roller 9 .

[0043] It also includes a plurality of guide wheels 7 rotatably arranged on the frame 6 , wherein the outer wall of the guide wheel 7 is provided with a plurality of guide grooves 70 , and a plurality of spandex yarns 110 are located in a plurality of corresponding guide grooves 70 for transmission.

[0044] The above-mentioned deodorizing agent is bamboo activated carbon or coconut shell activated carbon, usually mainly plant activated carbon, and can also be other materials with deodorizing effect. They are well-known materials and will not be described in detail here.

[0045] The present invention is usually used for pull-up pants, and can also be used for diapers or other disposable sanitary products, and is specifically configured according to the situation.

[0046] refer to Figure 5 The elastic waist 11 may also be configured as follows: a first elastic region 114, a second elastic region 115, a third elastic region 116, a fourth elastic region 117, and a fifth elastic region 118 are provided on the elastic waist 11 from top to bottom, and the tension force is arranged in a descending order as follows: the fifth elastic region 118, the fourth elastic region 117, the third elastic region 116, the first elastic region 114, and the second elastic region 115.

[0047] The fine denier spandex yarn 110 of the entire elastic waist 11 is usually 620 denier, 740 denier, 420 denier, or 200 denier to 300 denier, or other numbers, which are set according to specific circumstances.

[0048] The above-mentioned fine denier refers to fibers with a single fiber fineness of 1.0 to 0.5 dpf, fibers with a single fiber fineness of 0.5 to 0.1 dpf are called ultrafine denier fibers, and fibers with a single fiber fineness below 0.1 dpf are called micro-denier fibers. These are well-known structures and will not be described in detail here.

[0049] The preparation of the above spandex yarn on sanitary products can adopt the preparation device of clothing, unwind the required number of spandex yarns from the roll, for example, 60 yarns, and wind them uniformly on a stainless steel roller from left to right. When the roller rotates one circle, all 60 rubber bands rotate one circle, and the position of each one remains unchanged. After winding, it is called a disk head. When in use, the disk head is held on the equipment, and the 60 yarns are unrolled together. With reference to Chinese Patent Application No.: 201520194362.9, it is related to the yarn width adjustment mechanism of the spandex yarn warping machine, and the preparation device of the patented spandex yarn can be adopted; with reference to Chinese Patent Application No.: 201520192849.3, a head of a new elastic spandex yarn warping machine is provided, and the spandex yarn can also adopt the preparation device of the patent; therefore, the production method of spandex yarn is well known and will not be repeated here.

[0050] The number of the unwinding rollers 3 can be three, four or even more, forming multiple elastic band areas on the elastic waist 11. The tension of the elastic band areas can be set according to the situation. The more elastic band areas there are, the better the fitting effect and the better the product quality. However, the process is more complicated and the device cost is higher. It can be set according to the specific situation.

[0051] The glue spraying mechanism 5 is a well-known device and will not be described in detail here.

[0052] Each annular groove 410 corresponds to 3 to 10 spandex yarns 110 . When the corresponding spandex yarns 110 are formed, the spandex yarns 110 are twisted into spandex yarn 110 elastic bands by a twisting device.

[0053] The above-mentioned twisting device can stick multiple threads and silks into one strand, which is a well-known device and will not be described in detail here.

[0054] The three detection wheels 41 form an equilateral triangle or an isosceles right triangle, wherein two detection wheels 41 are on the same horizontal line, and the pressure detection device 43 is disposed on the other detection wheel 41 .

[0055] The structure of an equilateral triangle or an isosceles right triangle facilitates conversion of the value detected by the pressure detection device 43 into the tension of the spandex yarn 110 based on the decomposition of the force.

[0056] The distance between the adjacent spandex yarns 110 in the second elastic region 112 is the largest, and the distance between the adjacent spandex yarns 110 in the third elastic region 113 is the smallest. This structure can save materials, and the second elastic region 112 located in the middle will not exert a large force on the stomach of a person, and its elasticity is better, especially when the stomach is enlarged after eating, the second elastic region 112 is prevented from exerting a large force on the person to cause discomfort, thereby improving the comfort of the product.

[0057] refer to Fig.11 , Fig.12 and Fig.13 The spandex yarn 110 on one of the unwinding rollers 3 passes through the tension detection mechanism 4, the guide wheel 7, and the moving mechanism 8 in sequence. The moving mechanism 8 includes a sliding seat 81 that can slide laterally on the frame 6, a sliding cylinder 82 that drives the sliding seat 81 to slide, and a plurality of guide holes 810 provided on the sliding seat 81. After the straight spandex yarn 110 is compositely fixed, the wavy spandex yarn 110 is compositely fixed, and the spandex yarn 110 is guided and moved on the corresponding guide holes 810 to form a V-shaped or trapezoidal structure.

[0058] Fig.11 In the embodiment, the spandex yarns 110 of the second elastic region 112 are in a V-shape which is alternately arranged up and down, and the spandex yarns 110 of the first elastic region 111 or the third elastic region 113 may also be in a V-shape which is alternately arranged up and down.

[0059] In this structure, the V-shaped elastic band areas alternately arranged up and down can be stretched in all directions, thereby improving the elasticity and fixing effect of the elastic waist 11, and providing a stronger covering property for the human body, especially when the stomach becomes bigger after a full meal, so that the wearer is more comfortable.

[0060] By controlling the speed of the sliding cylinder 82 of the moving mechanism 8, the spandex yarn 110 can be formed into other shapes.

[0061] The number of the moving mechanisms 8 can be one, two, three or even more, and can form one, two or three elastic band areas of spandex yarns 110 of other shapes on the elastic waist 11 , depending on the specific situation.

[0062] The present invention can be controlled by PLC or other automatic control systems, which are well-known technologies and will not be described in detail here.

[0063] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A disposable aerospace absorbent product containing odor-free fine-denier spandex yarn, comprising a body, characterized in that: The main body includes an elastic waistband, which includes multiple spandex threads, to which a deodorizing agent is added, and the elastic waistband is provided with a first elastic region, a second elastic region, a third elastic region, a fourth elastic region, and a fifth elastic region from top to bottom, and the tension force is arranged in a descending order as follows: the fifth elastic region, the fourth elastic region, the third elastic region, the first elastic region, and the second elastic region.

2. The aerospace disposable absorbent product containing odor-free fine-denier spandex yarn according to claim 1, characterized in that: The deodorizing agent is bamboo activated carbon or coconut shell activated carbon.

3. The aerospace disposable absorbent product containing odor-free fine-denier spandex yarn according to claim 1, characterized in that: The main body comprises an upper non-woven fabric layer, a lower non-woven fabric layer and an absorbent core layer, and the spandex yarn is arranged between the upper non-woven fabric layer and the lower non-woven fabric layer.

4. A method for preparing a disposable aerospace absorbent product containing odor-free fine-denier spandex yarn according to claim 1, characterized in that: The following methods are included: (1) Manufacturing spandex yarn: When preparing the raw materials, the deodorizing agent is directly mixed with the PU masterbatch, and then sent into the extruder for melt extrusion, and then stretched, cooled, pulled, and shaped to form a deodorizing fine-denier spandex yarn; (2) The driving mechanism drives the upper non-woven fabric and the lower non-woven fabric to be transported, and multiple unwinding rollers unwind the spandex yarn. The unwinding motor drives the unwinding roller to rotate, and each unwinding roller unwinds multiple spandex yarns. The spandex yarns of each unwinding roller pass through the tension detection mechanism respectively, and the spandex yarns are compounded on the top of the lower non-woven fabric; the tension detection mechanism includes three rotatable detection wheels, and the three detection wheels are provided with multiple annular ring grooves, each of which guides and conveys at least one spandex yarn, and one of the detection wheels is arranged on a mounting seat, and the mounting seat is connected to the frame through a pressure detection device; the pressure detection device detects the tension of the spandex yarn. When the tension is too large, the speed of the unwinding roller is increased, thereby reducing the tension of the spandex yarn. When the tension of the spandex yarn is too small, the unwinding speed is reduced, thereby increasing the tension of the spandex yarn, and adjusting the tension of the spandex yarn to about the set value; the tension of the spandex yarns of different unwinding rollers is different, and elastic band areas with different tensions are formed at multiple positions of the elastic waist; (3) The upper non-woven fabric, the lower non-woven fabric and the absorbent core layer are laminated by a laminating roller.

5. The method for preparing a disposable aerospace absorbent product containing odor-free fine-denier spandex yarn according to claim 4, characterized in that: The unwinding roller is provided with a plurality of unwinding grooves, and each unwinding groove reels at least one spandex yarn.

6. The method for preparing a disposable aerospace absorbent product containing odor-free fine-denier spandex yarn according to claim 4, characterized in that: It also includes at least one guide wheel rotatably arranged on the frame, the outer wall of the guide wheel is provided with a plurality of guide grooves, and a plurality of spandex yarns are located in a plurality of corresponding guide grooves for transmission.

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