Ultra-soft antibacterial non-woven fabric for sanitary napkins and its preparation method

Abstract

The present invention discloses a super soft antibacterial non-woven fabric for sanitary napkins and a preparation method thereof, relating to the field of non-woven fabrics, including a super soft layer, a tensile resistance enhancement layer, an antibacterial layer, a first fiber web and a second fiber web. Through the collaborative design of a variety of functional fibers, the present invention has three major advantages of super softness, tensile resistance and antibacterial property: after the hydrophilization treatment of the superfine polyester fiber, the softness and hygroscopicity are significantly improved, making the surface layer feel delicate and skin-friendly; the TPU nanofiber web and the cross-linked polyethylene microfiber web form an enhancement layer, endowing the non-woven fabric with excellent tensile resistance and tear resistance; the PLA antibacterial fiber integrates the dual antibacterial mechanisms of nano silver and titanium dioxide to ensure long-lasting antibacterial safety. At the same time, combined with the silicone oil emulsion finishing, the overall material has comprehensive properties of breathability, durability and hygiene while maintaining softness.

Description

Technical Field

[0001] The present invention relates to the field of non-woven fabrics, and particularly to a super-soft antibacterial non-woven fabric for sanitary napkins and a preparation method thereof. Background Art

[0002] The non-woven fabric for sanitary napkins is a functional material designed specifically for female sanitary products, usually used for the surface layer, the diversion layer or the bottom layer. Its main characteristics are softness, breathability, skin-friendliness, and good hygroscopicity and strength. This type of non-woven fabric is made by processes such as spunbonding, hot air, and hot rolling, which can effectively improve the comfort and performance of sanitary napkins. At the same time, it has certain antibacterial and anti-leakage functions, and is one of the important materials to ensure the health and comfortable experience of women.

[0003] A super-soft antibacterial composite non-woven fabric for sanitary napkins with the Chinese patent publication number CN219927120U includes an upper non-woven fabric layer and a lower non-woven fabric layer. An absorbent layer is provided between the upper non-woven fabric layer and the lower non-woven fabric layer. Absorbent cotton is provided inside the absorbent layer. A plurality of vertical diversion cottons are connected to the absorbent cotton. The top of the vertical diversion cotton penetrates through the upper non-woven fabric layer. A plurality of horizontal diversion cottons are connected between the vertical diversion cottons. A plurality of water-permeable holes are provided on the upper non-woven fabric layer. An elastic water-permeable layer is filled between the vertical diversion cotton and the horizontal diversion cotton. An antibacterial layer is provided above the vertical diversion cotton and the horizontal diversion cotton. The beneficial effects are that the water absorption performance is improved, the diversion effect is improved, the water absorption effect is improved, the softness of the sanitary napkin is improved, and the thickness of the sanitary napkin is not increased, the comfort is improved, and the antibacterial layer improves the antibacterial effect of the sanitary napkin.

[0004] In the actual use process of the above patent and the prior art, the following problems exist: When achieving super softness, the tensile resistance performance is ignored, resulting in weak durability and too low tear resistance. And during the processing, when achieving softness, it is necessary to impregnate it with a silicone oil emulsion. Most of the impregnation process is static, resulting in poor impregnation effect and affecting work efficiency. Summary of the Invention

[0005] Therefore, in order to solve the above deficiencies, the present invention provides a super-soft antibacterial non-woven fabric for sanitary napkins and a preparation method thereof.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A preparation method of a super-soft antibacterial non-woven fabric for sanitary napkins, the specific steps are as follows:

[0007] S1 Preparation of super-soft layer fibers: Select 1.0~1.5 dtex superfine polyester fibers to ensure that the fiber diameter is less than 10 μm, and the fibers are hydrophilized using polyethylene glycol PEG modifier;

[0008] Preparation of the first fiber web and the second fiber web: Prepare a TPU nanofiber web by electrospinning, with a fiber diameter of 200 - 500 nm, and prepare a crosslinked polyethylene microfiber web by meltblowing, with a microfiber diameter of 1 - 3 μm;

[0009] Preparation of antibacterial layer fibers: Mix polylactic acid fibers with a nano - silver solution and perform high - temperature curing treatment. Use the sol - gel method to prepare a nano - titanium dioxide coating and coat it on the surface of the polylactic acid fibers;

[0010] Non - woven fabric forming: Preparation of the super - soft layer. Use the hot - air forming process to make the fibers present a low - density fluffy structure and perform a slight spray - setting treatment on the fibers; Preparation of the anti - tensile reinforcement layer. Composite the TPU nanofiber web and the crosslinked polyethylene microfiber web to form an interlaced reinforcement layer. Spray the TPU fiber web by electrospinning and deposit the XLPE fiber web by meltblowing. Use ultrasonic spot - welding technology to partially bond the reinforcement layer and the super - soft layer. Preparation of the antibacterial layer. Spray - bond the antibacterial fibers to form the bottom - layer structure;

[0011] Composite process: The super - soft layer and the anti - tensile reinforcement layer are hot - pressed with light pressure, and the bottom of the anti - tensile reinforcement layer and the antibacterial layer are hot - pressed with glue - dotting, and then room - temperature cooling and shaping are carried out;

[0012] Post - treatment process: Use an auxiliary softening finishing device to perform softening finishing on the composite non - woven fabric with a silicone oil emulsion, and the concentration of the silicone oil emulsion is 1.5% - 2.5%.

[0013] Preferably, the auxiliary softening finishing device includes a treatment box, a guide roller group arranged at both ends inside the treatment box for guiding the non - woven fabric, a driving motor arranged at the front end of the treatment box, and a sweeping and lifting mechanism installed inside the treatment box and connected to the output shaft of the driving motor at the left end. The sweeping and lifting mechanism is used for shifting the position and lifting the non - woven fabric.

[0014] Preferably, the sweeping and lifting mechanism includes guiding strips arranged at the front and rear positions inside the treatment box, a connecting rod installed at the left end of the guiding strip, a transmission mechanism connected to the connecting rod and installed inside the guiding strip, and a contact component connected to the top of the transmission mechanism. A guiding groove is opened at the left - hand end inside the guiding strip, the inner side of the guiding groove is connected to the transmission mechanism, and the left - hand connecting rod at the end is connected to the output shaft of the driving motor.

[0015] Preferably, the transmission mechanism includes a main swing arm connected to the connecting link, a first follower rod hinged to the left end of the main swing arm, a connecting rod hinged to the right end of the main swing arm, a linkage rod hinged to the other end of the connecting rod and hinged to the lower end of the first follower rod at the lower end, a first support rod hinged to the middle of the first follower rod, a secondary swing arm fixed to the right side of the first support rod, a second support rod hinged to the right end of the first follower rod, a second follower rod hinged to the middle of the second support rod and hinged to the left end of the first support rod at the left end, a third support rod hinged to the right end of the second follower rod, and a third follower rod hinged to the middle of the third support rod and hinged to the left end of the second support rod at the left end.

[0016] Preferably, a set of secondary swing arms are fixed to the right sides of the second support rod and the third support rod.

[0017] Preferably, the outer sides of the hinged positions of the connecting rod and the linkage rod protrude, the front ends of the hinged positions of each set of secondary swing arms are convex, the four convex positions are movably embedded into the guide groove, there are four sets of contact components, one set is connected to the top of the main swing arm, and the other three sets of contact components are each connected to a set of secondary swing arms.

[0018] Preferably, the contact component includes a fixed frame connecting the main swing arm and the secondary swing arm, a groove opened at the right end inside the fixed frame, a rotating plate rotatably arranged inside the groove, a first scraping plate arranged at the right end of the rotating plate, a second scraping plate arranged at the left end of the rotating plate, a limiting block installed at the right end of the fixed frame, an adjusting component arranged at the front and rear positions at the left end of the rotating plate, and a supporting plate arranged inside the adjusting component. The two ends of the inner opening of the first scraping plate are chamfered, and the inner opening of the second scraping plate is rounded.

[0019] Preferably, a ratchet is installed in the middle of the adjusting component, a rotating shaft is arranged in the middle of the ratchet, the inner side of the rotating shaft is connected to the supporting plate, a clamping piece is hinged to the upper end inside the adjusting component, a tension spring is installed at the hinged position of the clamping piece and the adjusting component, and the bottom of the clamping piece abuts against the outer side of the ratchet.

[0020] Preferably, a magnetic sheet is installed in the middle of the limiting block, and the right end of the limiting block is connected to the fixed frame through a connecting shaft.

[0021] The non-woven fabric is also prepared by a preparation method of a super soft antibacterial non-woven fabric for sanitary napkins, including a super soft layer, an anti-tensile reinforcement layer is arranged at the bottom of the super soft layer, the antibacterial layer is connected to the bottom of the anti-tensile reinforcement layer, and the anti-tensile reinforcement layer is formed by the interlaced compounding of a first fiber web and a second fiber web.

[0022] The beneficial effects of the present invention:

[0023] The present invention combines the three advantages of ultra-softness, tensile strength and antibacterial properties through the coordinated design of multiple functional fibers: the ultra-fine denier polyester fiber significantly improves its softness and hygroscopicity after hydrophilization treatment, making the surface layer delicate and skin-friendly; the TPU nanofiber mesh and the cross-linked polyethylene microfiber mesh form a reinforcement layer, giving the non-woven fabric excellent tensile and tear resistance; the PLA antibacterial fiber integrates the dual antibacterial mechanisms of nano-silver and titanium dioxide to ensure long-lasting antibacterial safety, and is combined with silicone oil emulsion finishing to ensure that the overall material has the comprehensive properties of breathability, durability and hygiene while maintaining softness.

[0024] The present invention is achieved by adopting an auxiliary soft finishing device in the silicone oil emulsion finishing process. The auxiliary soft finishing device is equipped with a sweeping and lifting mechanism. Four groups of movable contact components are arranged inside the sweeping and lifting mechanism. The contact components can manually adjust the scraper position according to the thickness of the non-woven fabric, and the lifting angle can also be adjusted. In conjunction with the movement of the transmission mechanism, stable and uniform impregnation can be performed. The device can also be placed at the highest point to allow excess silicone oil to stand and drain. The overall impregnation effect is good, and the work efficiency is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the auxiliary soft finishing device of the present invention;

[0027] Figure 3 It is a structural schematic diagram of the sweeping and lifting mechanism of the present invention;

[0028] Figure 4 It is a schematic diagram of the transmission mechanism structure of the present invention;

[0029] Figure 5 It is a schematic diagram of the contact assembly structure of the present invention;

[0030] Figure 6 It is a schematic diagram of the structure of the regulating component of the present invention;

[0031] Figure 7 It is a schematic diagram of the limit block structure of the present invention.

[0032] Wherein: super soft layer - a, anti - tensile reinforcement layer - b, antibacterial layer - c, first fiber web - b1, second fiber web - b2, auxiliary soft finishing device, treatment box - 1, guide roller group - 2, drive motor - 3, sweeping and lifting mechanism - 4, guide bar - 41, connecting rod - 42, transmission mechanism - 43, contact component - 44, main swing arm - 431, first follower rod - 432, connecting rod - 433, linkage rod - 434, first support rod - 435, secondary swing arm - 436, second support rod - 437, second follower rod - 438, third support rod - 439, third follower rod - 4310, fixed frame - 441, groove - 442, rotating plate - 443, first scraper - 444, second scraper - 445, limit block - 446, adjustment component - 447, support plate - 448, ratchet - 4471, rotating shaft - 4472, clamping part - 4473, magnetic sheet - 4461, connecting shaft - 4462. Detailed implementation mode

[0033] In order to further explain the technical solution of the present invention, the following will be elaborated in detail through specific embodiments.

[0034] Please refer to Figure 1 , the present invention provides a super soft and antibacterial non - woven fabric for sanitary napkins, including a super soft layer a. The bottom of the super soft layer a is thermally pressed and connected to the anti - tensile reinforcement layer b under light pressure. The bottom of the anti - tensile reinforcement layer b is thermally pressed and connected to the antibacterial layer c by dot - gluing. The super soft layer a is made of ultra - fine denier polyester fiber and is subjected to hydrophilization treatment. The antibacterial layer c is made of a mixture of polylactic acid fiber and nano - silver solution, and a nano - titanium dioxide coating is coated on the surface;

[0035] The anti - tensile reinforcement layer b is made by cross - compounding the first fiber web b1 and the second fiber web b2. The first fiber web b1 and the second fiber web b2 are TPU nano - fiber webs and cross - linked polyethylene micro - fiber webs.

[0036] The invention provides a method for preparing an ultra-soft antibacterial non-woven fabric for a sanitary napkin, comprising the following steps: S1: preparing ultra-soft layer a fibers: selecting 1.2 dtex ultra-fine denier polyester fibers to ensure that the fiber diameter is less than 10 μm, and using a polyethylene glycol (PEG) modifier after the fibers are subjected to hydrophilization treatment; S2: preparing a first fiber web b1 and a second fiber web b2: adopting an electrostatic spinning method to prepare a TPU nanofiber web with a fiber diameter of 300 nm, and adopting a melt-blowing method to prepare a cross-linked polyethylene microfiber web with a microfiber diameter of 2 μm; S3: preparing an antibacterial layer c fiber: mixing polylactic acid fibers with a nano-silver solution, and subjecting the mixture to a high-temperature curing treatment, and using a sol-gel method to prepare a nano-titanium dioxide coating, which is then coated on the surface of the polylactic acid fibers; S4: forming the non-woven fabric: preparing an ultra-soft layer a, and using a hot air web forming process to form a nano-titanium dioxide coating; The fiber presents a low-density fluffy structure by the process of S5, and the fiber is lightly sprayed to set the shape; the tensile strength reinforcement layer is prepared by compounding the TPU nanofiber mesh with the cross-linked polyethylene microfiber mesh to form a staggered reinforcement layer, the TPU fiber mesh is sprayed by electrospinning, the XLPE fiber mesh is deposited by melt-blowing, and the reinforcement layer is partially bonded to the ultra-soft layer by ultrasonic spot welding technology; the antibacterial layer is prepared by spraying glue to form the bottom structure of the antibacterial fiber; S5 composite process: the ultra-soft layer a and the tensile strength reinforcement layer b are hot-pressed with light pressure, and the bottom of the tensile strength reinforcement layer b and the antibacterial layer c are hot-pressed with glue spotting, followed by room temperature cooling and setting; S6 post-treatment process: the composite non-woven fabric is softened with silicone oil emulsion using an auxiliary softening finishing device, and the concentration of silicone oil emulsion is 1.8%.

[0037] See also Figure 2 The auxiliary softening finishing device includes a processing box 1 for loading silicone oil emulsion, a group of guide roller groups 2 are respectively arranged at the left and right positions of the upper end of the processing box 1, and an opening is opened on the side of the processing box 1 corresponding to the position of the guide roller group 2. A sweeping and lifting mechanism 4 is installed in the middle of the processing box 1, and a driving motor 3 for connecting the sweeping and lifting mechanism 4 is installed at the left end of the front end surface of the processing box 1. The processed non-woven fabric passes through the sweeping and lifting mechanism 4 through the left end guide roller group 2 and then passes out from the right end guide roller group 2.

[0038] See also Figures 3 - 7 The sweeping and lifting mechanism 4 includes a group of guide bars 41 fixedly arranged at the front and rear ends of the inner side of the processing box 1, a connecting rod 42 is installed at the left end of the guide bar 41, and the left end connecting rod 42 is connected to the output shaft of the driving motor 3. A transmission mechanism 43 is arranged at the lower end of the guide bar 41, and a guide groove is opened at the left end of the guide bar 41. The inner side of the guide groove is connected to the transmission mechanism 43, and the top of the transmission mechanism 43 is connected to the contact component 44, and the contact component 44 allows the non-woven fabric to pass through and can be moved and lifted;

[0039] The transmission mechanism 43 includes a main swing arm 431 connected to the connecting link 42. A first follower rod 432 is hinged inside the main swing arm 431. A connecting rod 433 is hinged to the right end of the main swing arm 431. The other end of the connecting rod 433 is hinged to a linkage rod 434. The other end of the linkage rod 434 is hinged to the left end of the first follower rod 432. The middle of the first follower rod 432 is hinged to a first support rod 435. A secondary swing arm 436 is fixed to the right side of the first support rod 435. The right side of the first follower rod 432 is hinged to a second support rod 437. The middle of the second support rod 437 is hinged to a second follower rod 438. And a set of secondary swing arms 436 is also fixed to the right side of the second support rod 437. The right end of the second follower rod 438 is hinged to a third support rod 439. The left end of the second follower rod 438 is hinged to the first support rod 435. The middle of the third support rod 439 is hinged to a third follower rod 4310. And a set of secondary swing arms 436 is also fixed to the right side of the third support rod 439. The left end of the third follower rod 4310 is hinged to the second support rod 437. The hinged positions of the connecting rod 433 and the linkage rod 434 protrude outward. The front ends of the hinged positions of each set of secondary swing arms 436 are all convex. The four convex positions are movably embedded into the guide groove;

[0040] There are four sets of contact components 44. One set is connected to the top of the main swing arm 431, and the other three sets of contact components 44 are each connected to a set of secondary swing arms 436. The contact component 44 includes a fixed frame 441 connected to the swing arm. A groove 442 is opened at the right end inside the fixed frame 441. The middle of the groove 442 is rotatably connected to a rotating plate 443. A first scraper 444 and a second scraper 445 are respectively installed at the left and right ends inside the rotating plate 443. Openings are provided in the middle of the two scrapers. However, the two ends of the opening on the inner side of the first scraper 444 are chamfered, and the opening on the inner side of the second scraper 445 is filleted. A set of limit blocks 446 are respectively installed at the front and rear positions at the right end of the top of the fixed frame 441. An adjusting component 447 is fixed at the front and rear positions at the left end inside the fixed frame 441. The inner side of the adjusting component 447 is connected to a support plate 448;

[0041] A ratchet 4471 is installed in the middle of the adjusting component 447. A rotating shaft 4472 is provided in the middle of the ratchet 4471. The inner side of the rotating shaft 4472 is connected to the support plate 448. A clamping member 4473 is hinged to the upper end inside the adjusting component 447. A tension spring is installed at the hinged position of the clamping member 4473 and the adjusting component 447 for convenient resetting. And the bottom of the clamping member 4473 abuts against the outer side of the ratchet 4471;

[0042] A magnetic sheet 4461 is installed in the middle of the limit block 446. The magnetic sheet 4461 provides magnetic force to facilitate the adsorption of the rotating plate 443. The right end of the limit block 446 is connected to the fixed frame 441 through a connecting shaft 4462.

[0043] The specific implementation process is as follows:

[0044] When the auxiliary soft finishing device needs to be used, the non-woven fabric is first installed and passed through the processing box and the sweeping and lifting mechanism 4, and then the silicone oil emulsion is poured into the processing box 1. If it is necessary to impregnate non-woven fabrics of different thicknesses, the scraper can be selected according to the adjustment of the rotating plate 443. The user applies force to move the limit block 446 to release the limit on the rotating plate 443, and then the rotating plate 443 can be rotated to adjust the scraper to be selected to the right end, and then limit it again, and then the non-woven fabric is passed through the middle opening of the scraper at the right end, and then through the other three groups in turn, and then force is applied to the support plate 448 to adjust the angle. The support plate 448 rotates with the rotating shaft 4472, and the ratchet 4471 rotates with it, and is limited by the clamp 4473;

[0045] Then, the stirring work can be started in the emulsion in the processing box 1 to improve the uniform impregnation effect, and the driving motor 3 is started to work. The driving motor 3 rotates with the connecting rod 42, and the connecting rod 42 can act on the main swing arm 431, and the main swing arm 431 can act on the first follower rod 432. The first follower rod 432 pulls the second support rod 437, and the second support rod 437 pulls the third support rod 439 through the second follower rod 438, and cooperates with the displacement of the protruding position in the guide groove to realize the swing of the main swing arm 431 and the auxiliary swing arm 436. During the swinging process, the contact component 44 connected at the top follows the movement, and then the driving motor 3 needs to perform forward and reverse movements to achieve stable swinging and stir the movement. After the impregnation is completed, the swing arm can be swung to the highest position to facilitate the falling of excess emulsion in the non-woven fabric.

[0046] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A preparation method of a super soft antibacterial non-woven fabric for sanitary napkins, characterized in that: The specific steps are as follows: Preparation of S1 ultra-soft layer fiber: 1.0~1.5dtex ultra-fine polyester fiber is selected to ensure that the fiber diameter is less than 10μm, and the fiber is hydrophilized using polyethylene glycol PEG modifier; S2 Preparation of the first fiber web and the second fiber web: The TPU nanofiber web is prepared by electrospinning, and the fiber diameter is 200-500 nm. The cross-linked polyethylene microfiber web is prepared by melt-blowing, and the microfiber diameter is 1-3 μm. S3 antibacterial layer fiber preparation: polylactic acid fiber is mixed with nano silver solution and subjected to high temperature curing treatment, and a nano titanium dioxide coating is prepared by a sol-gel method and coated on the surface of the polylactic acid fiber; S4 non-woven fabric forming: preparation of the ultra-soft layer, using hot air web forming process to make the fiber present a low-density fluffy structure, and slightly spraying the fiber to set the shape; preparation of the tensile reinforcement layer, compounding the TPU nanofiber mesh with the cross-linked polyethylene microfiber mesh to form a staggered reinforcement layer, spraying the TPU fiber mesh by electrospinning, and depositing the XLPE fiber mesh by melt-blowing. The ultrasonic spot welding technology is used to partially bond the reinforcement layer and the ultra-soft layer; preparation of the antibacterial layer, and the antibacterial fiber is formed into the bottom structure by the spray bonding method; S5 composite process: the ultra-soft layer and the anti-stretching reinforcement layer are hot-pressed with light pressure, and the bottom of the anti-stretching reinforcement layer and the antibacterial layer are hot-pressed with glue, followed by cooling at room temperature to set the shape; S6 post-treatment process: Use auxiliary softening finishing device to soften the composite non-woven fabric with silicone oil emulsion, and the concentration of silicone oil emulsion is 1.5%~2.5%; The auxiliary soft finishing device comprises a processing box, a guide roller group arranged at both ends of the processing box for guiding the non-woven fabric, a driving motor arranged at the front end of the processing box, and a sweeping and lifting mechanism installed in the processing box and connected to the output shaft of the driving motor at the left end, wherein the sweeping and lifting mechanism is used to move and lift the non-woven fabric; The sweeping and lifting mechanism includes a guide bar arranged at the front and rear positions in the processing box, a connecting rod installed at the left end of the guide bar, a transmission mechanism connected to the connecting rod and installed inside the guide bar, and a contact component connected to the top of the transmission mechanism. A guide groove is opened at the left end of the guide bar, the inner side of the guide groove is connected to the transmission mechanism, and the left end connecting rod is connected to the output shaft of the drive motor.

2. The preparation method of a super soft antibacterial non-woven fabric for sanitary napkins according to claim 1, characterized in that: The transmission mechanism includes a main swing arm connected to the connecting rod, a first follower rod hinged to the left end of the main swing arm, a connecting rod hinged to the right end of the main swing arm, a linkage rod hinged to the other end of the connecting rod and hinged to the first follower rod at the lower end, a first support rod hinged to the middle of the first follower rod, a secondary swing arm fixed to the right side of the first support rod, a second support rod hinged to the right end of the first follower rod, a second follower rod hinged to the middle of the second support rod and hinged to the first support rod at the left end, a third support rod hinged to the right end of the second follower rod, and a third follower rod hinged to the middle of the third support rod and hinged to the second support rod at the left end.

3. The preparation method of the ultra-soft antibacterial non-woven fabric for sanitary napkins according to claim 2, characterized in that: A set of auxiliary swing arms are fixed on the right sides of the second support rod and the third support rod.

4. The preparation method of a super soft antibacterial non-woven fabric for sanitary napkins according to claim 3, characterized in that: The hinge positions of the connecting rod and the linkage rod protrude on the outside, and the front end of each set of auxiliary swing arm hinge positions is protruding. The four sets of protruding positions are movably embedded in the guide groove. There are four sets of contact components, one set is connected to the top of the main swing arm, and the other three sets of contact components are each connected to a set of auxiliary swing arms.

5. The preparation method of a super soft antibacterial non-woven fabric for sanitary napkins according to claim 4, characterized in that: The contact assembly includes a fixed frame connecting the main swing arm and the auxiliary swing arm, a groove opened at the right end of the fixed frame, a rotating plate rotatably arranged inside the groove, a first scraper arranged at the right end of the rotating plate, a second scraper arranged at the left end of the rotating plate, a limit block installed at the right end of the fixed frame, an adjustment assembly arranged at the front and rear positions of the left end of the rotating plate, and a support plate arranged on the inner side of the adjustment assembly, wherein the inner opening of the first scraper is chamfered at both ends, and the inner opening of the second scraper is rounded.

6. The preparation method of a super soft antibacterial non-woven fabric for sanitary napkins according to claim 5, characterized in that: A ratchet is installed in the middle of the adjustment component, a rotating shaft is set in the middle of the ratchet, the inner side of the rotating shaft is connected to the support plate, a clamp is hinged at the upper end of the adjustment component, a tension spring is installed at the hinge position between the clamp and the adjustment component, and the bottom of the clamp is against the outer side of the ratchet.

7. The preparation method of a super-soft antibacterial non-woven fabric for sanitary napkins according to claim 5, characterized in that: A magnetic sheet is installed in the middle of the limit block, and the right end of the limit block is connected to the fixed frame through a connecting shaft.

8. A super soft antibacterial non-woven fabric for sanitary napkins, which is a non-woven fabric prepared by using the preparation method of a super soft antibacterial non-woven fabric for sanitary napkins as described in claim 1, and is characterized in that: It comprises an ultra-soft layer, an anti-stretching reinforcement layer is arranged at the bottom of the ultra-soft layer, the bottom of the anti-stretching reinforcement layer is connected to the antibacterial layer, and the anti-stretching reinforcement layer is formed by interlacing and compounding a first fiber mesh and a second fiber mesh.

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