Production process and system of tampon absorber and tampon absorber

Abstract

The invention discloses a production process and system of a tampon absorber and the tampon absorber.The production process comprises the steps that a continuous absorption core body which is continuously conveyed is transversely cut off for the first time according to the first preset length, and a plurality of independent absorption core bodies which are separated from one another are formed; the independent absorption core bodies are conveyed at intervals according to a first preset interval, so that a sealing and pressing interval is formed between every two adjacent independent absorption core bodies; continuously coating the outer side of the continuously conveyed independent absorption core body with a non-woven fabric material to form an absorption core body array composite strip coated with the non-woven fabric; performing transverse sealing and pressing on the non-woven fabric area corresponding to the sealing and pressing space to form a transverse sealing and pressing area; the transverse sealing and pressing area is transversely cut off for the second time, and a plurality of tampon absorbers which are completely sealed and wrapped by the non-woven fabric are formed. Each core body can be completely wrapped in the non-woven fabric, it is guaranteed that each core body is completely and independently wrapped, and the problems of fiber exposure, fiber falling and the like are thoroughly eradicated.

Description

Technical Field

[0001] This invention relates to the field of tampon processing technology, specifically to a production process, system, and absorbent body for tampons. Background Technology

[0002] Tampons are a common disposable hygiene product, typically consisting of a continuous absorbent core and a cover layer, used for menstrual care.

[0003] In existing technologies, the common production process is the "coating before cutting" method, which involves first coating the continuous absorbent core with nonwoven fabric, and then cutting it. This process has the following significant drawbacks: Exposed ends of the core: During the slitting process, the nonwoven fabric cannot be closed at the cut position, resulting in the two ends of the continuous absorbent core being directly exposed to the outside, making the fibers easy to fall off and affecting the hygiene and safety of use. Fiber contamination risk: Core fibers may detach during use or transportation, posing a hygiene hazard; Poor structural integrity: The product relies solely on longitudinal sealing to maintain its shape, and the open structure at both ends can easily lead to core deformation or the leakage of absorbed materials. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a manufacturing process, system and tampon absorbent body for tampons, so as to solve the problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A manufacturing process for a tampon absorbent body includes: The continuously conveyed continuous absorbent core is first transversely cut to a first preset length to form multiple independent absorbent cores that are separated from each other. The independent absorbent cores are transported at intervals according to a first preset spacing, so that a sealing gap is formed between two adjacent independent absorbent cores; wherein, the sealing gap is smaller than the first preset spacing; Non-woven fabric material is continuously wrapped around the outside of the continuously conveyed independent absorbent core to form a composite strip of absorbent core array covered by non-woven fabric; wherein, the distance between two adjacent independent absorbent cores in the absorbent core array composite strip is equal to the first preset distance. Based on the absorbent core array composite tape, a transverse sealing is performed in the nonwoven fabric area corresponding to the sealing spacing to form a transverse sealing zone; The transverse sealing area is then cut a second time to form multiple tampon absorbent bodies that are completely enclosed and covered by non-woven fabric.

[0006] In one embodiment, prior to the lateral sealing step, the method further includes: Along the longitudinal centerline of the composite tape of the absorbent core array, the overlapping areas of the two sides of the nonwoven fabric covering the independent absorbent core are longitudinally sealed to bond the two sides of the nonwoven fabric covering the continuous absorbent core, forming a longitudinal sealing line.

[0007] In one embodiment, prior to the step of forming the absorbent body of the tampon, the method further includes: The cut tampon absorbent body is adjusted to a second preset spacing so that a cotton thread spacing is formed between adjacent tampon absorbent bodies; wherein the cotton thread spacing is smaller than the second preset spacing; The absorbent body of the tampon, after the second preset spacing adjustment, is sewn with cotton thread to obtain the finished tampon.

[0008] In one embodiment, the sealing gap ranges from 5 mm to 30 mm.

[0009] In one embodiment, the continuously conveyed continuous absorbent core is first transversely cut to a first preset length, including: The continuous absorbent core is continuously conveyed to the first slitting mechanism via a feeding device; The first cutting mechanism is controlled to cut the continuous absorbent core according to a first preset length to form the independent absorbent core.

[0010] In one embodiment, the independent absorbent cores are transported at intervals according to a first preset spacing, including: The first spacing transfer mechanism controls the independent absorbent core to be transported at intervals to the first conveying mechanism according to the first preset spacing, and then transported to the covering mechanism through the first conveying mechanism.

[0011] In one embodiment, a nonwoven fabric material is continuously wrapped around the outside of the continuously conveyed independent absorbent core, including: The control covering mechanism sequentially places the received independent absorbent cores onto the continuously conveyed nonwoven fabric material at intervals, and drives the nonwoven fabric material to continuously cover the outside of the independent absorbent cores to form the absorbent core array composite tape.

[0012] In one embodiment, it further includes: The coating mechanism conveys the absorber core array composite tape to the sealing mechanism, and controls the sealing mechanism to perform a sealing operation on the conveyed absorber core array composite tape to form the transverse sealing zone. The second cutting mechanism is controlled to laterally cut the transverse sealing area of ​​the absorbent core array composite tape according to the second preset length to form multiple tampon absorbent bodies; wherein, the second preset length is equal to the sum of the first preset length and the length of the individual absorbent core.

[0013] A production system for a tampon absorbent body, used to implement the production process of a tampon absorbent body as described in any one of the above claims, characterized in that the production system comprises the following components arranged sequentially along the material conveying direction: The first slitting mechanism is used to perform a first transverse cut on the continuously conveyed continuous absorbent cores according to a first preset length, forming multiple independent absorbent cores that are separated from each other. A first spacing transfer mechanism is used to transport the independent absorbent cores at intervals according to a first preset spacing, so that a sealing gap is formed between two adjacent independent absorbent cores; wherein the sealing gap is smaller than the first preset spacing. A covering mechanism is used to continuously cover the outside of the continuously conveyed independent absorbent cores with non-woven fabric material to form a composite tape of absorbent core array covered by non-woven fabric; wherein the distance between two adjacent independent absorbent cores in the absorbent core array composite tape is equal to the first preset distance. A sealing mechanism is used to perform transverse sealing on the nonwoven fabric area corresponding to the sealing spacing based on the absorbent core array composite tape, forming a transverse sealing area; The second slitting mechanism is used to perform a second transverse cut on the transverse sealing area to form multiple tampon absorbent bodies that are completely enclosed and covered by non-woven fabric.

[0014] A tampon absorbent body, wherein the tampon absorbent body is manufactured by the manufacturing process of the tampon absorbent body described in any of the above claims.

[0015] Compared with existing technologies, the beneficial effects of this invention are as follows: By first cutting and spacing the continuous absorbent cores, and then continuously wrapping them with nonwoven fabric, and by sealing the nonwoven fabric between the cores longitudinally and laterally, each core can be completely wrapped in the nonwoven fabric. This ensures that each core is completely and independently wrapped, completely eliminating problems such as fiber exposure and fiber shedding, improving product hygiene and safety, increasing process integration, ensuring suitability for automated continuous production, improving production efficiency, and reducing production costs. Attached Figure Description

[0016] Figure 1 A schematic diagram of the manufacturing process of a sanitary tampon absorbent body provided by the present invention; Figure 2A schematic diagram of the structure of a production system for a tampon absorbent body provided by the present invention; Figure 3 for Figure 2 A schematic diagram of the structure of the first pitch transfer mechanism in the middle; Figure 4 for Figure 3 A cross-sectional view of the first spacing transfer mechanism in the diagram; Figure 5 for Figure 2 A schematic diagram of the covering mechanism in the diagram; Figure 6 for Figure 5 A three-dimensional structural diagram of the covering mechanism in the image; Figure 7 for Figure 6 A partially enlarged structural diagram of the covering mechanism at point A; Figure 8 for Figure 5 A top view of the covering mechanism in the diagram; Figure 9 for Figure 2 A schematic diagram of the longitudinal sealing unit in the middle; Figure 10 for Figure 2 A three-dimensional structural diagram of the longitudinal sealing unit in the middle; Figure 11 for Figure 2 A cross-sectional view of the transverse sealing unit in the diagram; Figure 12 for Figure 11 A schematic diagram of the transverse sealing roller in the middle; Figure 13 for Figure 12 A cross-sectional view of the transverse sealing roller along the CC direction; Figure 14 This invention provides a schematic diagram of the manufacturing process of a tampon absorbent body; Figure 15 for Figure 3 A partial structural schematic diagram of the absorber core array composite strip in the image; Figure 16 for Figure 3 A schematic diagram of the structure of the finished cotton swab; In the diagram: 11. Continuous absorbent core; 12. Independent absorbent core; 13. Non-woven fabric material; 14. Absorbent core array composite strip; 141. Longitudinal sealing line; 142. Transverse sealing zone; 15. Tampon absorbent body; 16. Cotton thread; 17. Finished tampon; 21. First slitting mechanism; 22. First spacing transfer mechanism; 221. Rotating suction rod; 222. Adsorption cover; 2221. Second adsorption hole; 223. Vacuum adsorption zone; 224. Second driving component; 23. First conveying mechanism; 24. Covering mechanism; 241. First conveying unit; 2411. Mounting frame; 2412. Conveyor belt; 242. Transfer plate; 2421. Input end of transfer plate; 2422. Output end of transfer plate; 243. Covering unit; 2431. Left folding component; 2432. Right folding component ; 2433, Side plate; 24331, First inclined folding part; 2434, Top plate; 24341, Second inclined folding part; 24342, Flattening part; 25, Sealing mechanism; 251, Longitudinal sealing unit; 2511, First sealing frame; 2512, First rotating roller; 2513, Longitudinal sealing roller; 25131, Longitudinal protruding sealing part; 25132, First limiting protrusion; 2514, First lifting drive; 252, Transverse sealing unit; 2521, Second sealing frame; 2522, Two transverse sealing rollers; 25221, Transverse protruding sealing strip; 25222, Second limiting protrusion; 2523, Second lifting drive; 26, Second cutting mechanism; 27, Second spacing transfer mechanism; 28, Second conveying mechanism; 29, Sewing mechanism; 30, Third conveying mechanism. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] like Figures 1 to 16 As shown, the present invention provides a manufacturing process for a tampon absorbent body, characterized by comprising: S100, The continuously conveyed continuous absorbent core 11 is transversely cut for the first time according to the first preset length to form multiple independent absorbent cores 12 that are separated from each other. S200. The independent absorbent cores 12 are transported at intervals according to a first preset spacing so that a sealing gap is formed between two adjacent independent absorbent cores 12; wherein, the sealing gap is smaller than the first preset spacing. S300, Non-woven fabric material 13 is continuously wrapped around the outside of the continuously conveyed independent absorbent core 12 to form an absorbent core array composite strip 14 covered by non-woven fabric; wherein, the distance between two adjacent independent absorbent cores 12 in the absorbent core array composite strip 14 is equal to the first preset distance. S400, Based on the absorbent core array composite tape 14, transverse sealing is performed in the nonwoven fabric area corresponding to the sealing spacing to form a transverse sealing area 142. S500, the transverse sealing zone 142 is cut transversely a second time to form multiple tampon absorbent bodies 15 that are completely enclosed by non-woven fabric.

[0019] In this embodiment, by first cutting the continuous absorbent core 11 and widening the gap, and then continuously wrapping it with non-woven fabric, and by sealing the non-woven fabric between the cores longitudinally and laterally, each core can be completely wrapped in the non-woven fabric, ensuring that each core is completely wrapped independently. This completely eliminates problems such as fiber exposure and fiber shedding, improves product hygiene and safety, increases process integration, ensures suitability for automated continuous production, improves production efficiency, and reduces production costs.

[0020] This invention enables complete coverage of the continuous absorbent core 11 during efficient and continuous production, fundamentally solving the problems of fiber shedding and hygiene safety.

[0021] like Figures 14 to 16 As shown, in one embodiment, prior to the lateral sealing step, the following steps are also included: Along the longitudinal centerline of the composite tape 14 of the absorbent core array, the overlapping areas of the two sides of the nonwoven fabric covering the independent absorbent core 12 are longitudinally sealed to bond the two sides of the nonwoven fabric covering the continuous absorbent core 11, forming a longitudinal sealing line 141.

[0022] like Figures 14 to 16 As shown, in one embodiment, prior to step 15 of forming the tampon absorbent body, the following steps are also included: The cut tampon absorbent body 15 is adjusted by a second preset spacing so that a cotton thread 16 spacing is formed between adjacent tampon absorbent bodies 15; wherein the cotton thread 16 spacing is smaller than the second preset spacing. The absorbent body 15 of the tampon, after the second preset spacing adjustment, is sewn with cotton thread 16 to obtain the finished tampon 17.

[0023] In one embodiment, the sealing gap ranges from 5 mm to 30 mm.

[0024] In this embodiment, by setting the sealing gap, sufficient nonwoven fabric area is provided for the transverse sealing operation, ensuring that after the second transverse cut, both ends of each continuous absorbent core 11 are completely sealed by nonwoven fabric. Since the sealing gap is smaller than the first preset gap, the sealing operation can be stably performed at the sealing gap, avoiding any impact on the inner core.

[0025] like Figure 2 As shown, in one embodiment, the continuously conveyed continuous absorbent core 11 is first transversely cut to a first preset length, including: The continuous absorbent core 11 is continuously conveyed to the first slitting mechanism 21 via the feeding device; The first cutting mechanism 21 is controlled to cut the continuous absorbent core 11 according to the first preset length to form an independent absorbent core 12.

[0026] In one embodiment, the independent absorbent cores 12 are transported at intervals according to a first preset spacing, including: The first spacing transfer mechanism 22 controls the independent absorbent core 12 to be transported to the first conveying mechanism 23 at intervals according to the first preset spacing, and then transported to the covering mechanism 24 through the first conveying mechanism 23.

[0027] In this embodiment, a sufficient gap is created between the two absorbent cores by intermittent delivery to allow for sealing after encapsulation. The first preset gap is set according to the actual situation to ensure that the sealing mechanism 25 can press the cores together without pressing the individual absorbent cores 12.

[0028] like Figure 2-4 As shown, in one embodiment, the first spacing transfer mechanism 22 is disposed between the first cutting mechanism 21 and the first conveying mechanism 23, and is used to transfer the independent absorbent cores 12 formed after being cut by the first cutting mechanism 21 to the first conveying mechanism 23 at intervals. like Figure 2-4 As shown, in one embodiment, the first spacing transfer mechanism 22 includes a rotating suction rod 221 and an adsorption cover 222. A vacuum adsorption area 223 is provided between the rotating suction rod 221 and the adsorption cover 222. A plurality of second adsorption holes 2221 are provided on the adsorption cover 222 corresponding to the vacuum adsorption area 223. The second adsorption holes 2221 are connected to the vacuum adsorption area 223, thereby realizing the adsorption of the independent absorption core 12 formed after being cut by the first cutting mechanism 21 onto the second adsorption holes 2221 of the adsorption cover 222. It should be noted that, as Figure 2-4As shown, a sealing plate is provided between the rotating suction rod 221 and the adsorption cover 222. By rotating the suction rod 221, the adsorption cover 222 and the sealing plate, a vacuum adsorption zone 223 is formed. The rotating suction rod 221 corresponding to the vacuum adsorption zone 223 is provided with a plurality of first adsorption holes. The first adsorption holes of the rotating suction rod 221 are connected to an external vacuum device so that the vacuum adsorption zone 223 formed between the first adsorption holes and the second adsorption holes 2221 generates a negative pressure, thereby adsorbing the independent absorption core 12 formed after being cut by the first cutting mechanism 21 onto the second adsorption hole 2221 of the adsorption cover 222. The adsorption cover 222 and the rotating suction rod 221 are coaxially arranged.

[0029] like Figure 2-4 As shown, the first spacing transfer mechanism 22 also includes a first driving member. The driving end of the first driving member is connected to one end of the rotating adsorption rod 221 for driving the rotating adsorption rod 221 to rotate, thereby driving the adsorption cover 222 and the vacuum adsorption area 223 to rotate, so as to realize the transfer of the independent absorption core 12 formed after being cut by the first cutting mechanism 21 to the first conveying mechanism 23 at intervals.

[0030] During operation, the first driving component drives the rotating adsorption rod 221 to rotate, which in turn drives the adsorption cover 222 and the vacuum adsorption area 223 to rotate to the output end of the first cutting mechanism 21, so as to adsorb the independent absorbent cores 12 formed after being cut by the first cutting mechanism 21 onto the adsorption cover 222. Then, the first driving component is controlled to reset / reverse, driving the adsorption cover 222 and the vacuum adsorption area 223 to rotate to the input end of the first conveying mechanism 23, so as to transport the independent absorbent cores 12 adsorbed on the adsorption cover 222 to the first conveying mechanism 23 at intervals.

[0031] As needed, such as Figure 2-4 As shown, the first spacing transfer mechanism 22 also includes a second driving member 224. The driving end of the second driving member 224 is connected to the rotating adsorption rod 221 for driving the rotating adsorption rod 221 to move relative to the first cutting mechanism 21 and the first conveying mechanism 23, so as to drive the adsorption cover 222 to move closer to or further away from the first cutting mechanism 21 and the first conveying mechanism 23, thereby adjusting the spacing between the adsorption cover 222 and the first cutting mechanism 21 and the first conveying mechanism 23 to meet the handling effect of independent absorbent cores 12 of different thicknesses.

[0032] like Figure 2 , 5 As shown in Figure 8, in one embodiment, a nonwoven fabric material 13 is continuously wrapped around the outside of the continuously conveyed independent absorbent core 12, including: The control covering mechanism 24 sequentially places the received independent absorbent cores 12 at intervals onto the continuously conveyed nonwoven fabric material 13, and drives the nonwoven fabric material 13 to continuously cover the outside of the independent absorbent cores 12 to form an absorbent core array composite tape 14.

[0033] like Figure 2 , 5 As shown in Figure 8, in one embodiment, the coating mechanism 24 includes a first conveying unit 241, a transfer plate 242, and a coating unit 243. The first conveying unit 241 includes a mounting frame 2411, a conveying drive component, and a conveyor belt 2412. The mounting frame 2411 is equipped with multiple drive rollers, and the conveyor belt 2412 is fitted onto the drive rollers of the mounting frame 2411. The drive end of the conveying drive component is connected to a drive roller for transmission. The conveying drive component is used to drive the drive roller to rotate, thereby driving the conveyor belt 2412 to run, and thus realizing the conveying of nonwoven fabric material 13 and independent absorbent core 12.

[0034] The transfer plate 242 is disposed at the input end of the first conveying unit 241. The input end 2421 and the output end 2422 of the transfer plate are inclined from bottom to top (that is, the height of the output end 2421 of the transfer plate is higher than the height of the input end 2422 of the transfer plate), and the height of the output end 2422 of the transfer plate is lower than the height of the conveying surface of the conveyor belt 2412 at the input end of the first conveying unit 241.

[0035] The width of the input end 2421 of the transfer plate is equal to the width of the non-woven material 13, so as to facilitate the stable and flat conveying of the non-woven material 13.

[0036] The width of the output end 2422 of the transfer plate is smaller than the width of the non-woven material 13 and the input end 2421 of the transfer plate. The width of the output end 2422 of the transfer plate is larger than the width of the conveyor belt 2412. The width of the conveyor belt 2412 is larger than the width of the independent absorbent core 12, thereby realizing the conveying of the non-woven material 13 to the conveyor belt 2412, and facilitating the covering unit 243 to fold and cover both sides of the non-woven material 13 onto the outer surface of the independent absorbent core 12. The width of the nonwoven material 13 is greater than the circumferential dimension of the independent absorbent core 12 (i.e., the sum of the width and height of the independent absorbent core 12 multiplied by 2), thereby achieving complete coverage of the independent absorbent core 12 in the circumferential direction.

[0037] like Figure 2 , 5As shown in Figure -8, the covering unit 243 is mounted on the mounting frame 2411. The covering unit 243 is located above the conveyor belt 2412 and is positioned between the input and output ends of the conveyor belt 2412. The covering unit 243 includes a left folding member 2431 and a right folding member 2432. Both the left folding member 2431 and the right folding member 2432 are provided with side plates 2433 and top plates 2434. The top plates 2434 are mounted on the mounting frame 2411 via the side plates 2433. The top plate 2434 of the left folding member 2431 is located above the top plate 2434 of the right folding member 2432, and the left folding member 2431... A folding gap is provided between the top plate 2434 of the stack 2431 and the top plate 2434 of the right folding member 2432. The folding gap is greater than the thickness of the nonwoven material 13. A first preset covering height is provided between the bottom surface of the top plate 2434 of the right folding member 2432 and the conveyor belt 2412. The first preset covering height is greater than twice the thickness of the nonwoven material 13 and the sum of the thickness of the independent absorbent core 12. This enables the received independent absorbent core 12 to be placed at intervals on the continuously conveyed nonwoven material 13, and drives the nonwoven material 13 to continuously cover the outside of the independent absorbent core 12.

[0038] The side plates 2433 of the left folding member 2431 and the right folding member 2432 are located on both sides of the conveyor belt 2412. The side plate 2433 is provided with a first inclined folding part 24331 at the end of the side plate 2433 that is close to the input end of the conveyor belt 2412. The first inclined folding part 24331 is at a height higher than the conveying surface height of the conveyor belt 2412 and the output end 2422 of the transfer plate.

[0039] In addition, the top plates 2434 of the left folding member 2431 and the right folding member 2432 are provided with a second inclined folding part 24341 and a flattening part 24342 in sequence from the input end of the conveyor belt 2412 along the output end. The second inclined folding part 24341 is inclined from one side of the conveyor belt 2412 toward the other side of the conveyor belt 2412, and the flattening part 24342 is horizontally close to the other side of the conveyor belt 2412.

[0040] like Figure 2 , 5As shown in Figure 8, during operation, the nonwoven fabric material 13 is output through the feeding mechanism and then transferred to the conveyor belt 2412 via the transfer plate 242. Since the width of the output end 2422 of the transfer plate is smaller than the width of the nonwoven fabric material 13, and the width of the output end 2422 of the transfer plate is larger than the width of the conveyor belt 2412, and the width of the conveyor belt 2412 is larger than the width of the independent absorbent core 12, the nonwoven fabric material 13 is thus conveyed to the conveyor belt 2412. Simultaneously, the covering unit 243 folds both sides of the nonwoven fabric material 13 to cover the outer surface of the independent absorbent core 12. Furthermore, since the side plates 2433 of the left folding member 2431 and the right folding member 2432 are located on both sides of the conveyor belt 2412, a first inclined folding portion 24331 is provided at the end of the side plate 2433 closest to the input end of the conveyor belt 2412, inclined from the output end 2422 of the transfer plate towards the top plate 2434. The height of the first inclined folding part 24331 is higher than the height of the conveying surface of the conveyor belt 2412 and the height of the output end 2422 of the transfer plate. So that during conveying, the two sides of the non-woven fabric material 13 are folded to the two sides of the independent absorbent core 12 through the side plates 2433 of the left folding part 2431 and the right folding part 2432 and the first inclined folding part 2431, so as to cover the two sides of the independent absorbent core 12. Then, the two sides of the non-woven fabric material 13 are pre-folded to the top surface of the independent absorbent core 12 through the top plate 2434 of the left folding part 2431 and the right folding part 2432 and the second inclined folding part 24341, so as to pre-cover the top surface of the independent absorbent core 12. Finally, the pre-folded part of the non-woven fabric material 13 is folded to the top surface of the independent absorbent core 12 through the flattening part 24342, so as to completely cover the top surface of the independent absorbent core 12.

[0041] like Figure 2 As shown, in one embodiment, it further includes: The absorber core array composite tape 14 is conveyed to the sealing mechanism 25 through the covering mechanism 24, and the sealing mechanism 25 is controlled to perform a sealing operation on the conveyed absorber core array composite tape 14 to form a transverse sealing area 142. The second cutting mechanism 26 is controlled to cut the transverse sealing area 142 of the absorbent core array composite strip 14 laterally according to the second preset length to form multiple tampon absorbent bodies 15; wherein the second preset length is equal to the sum of the first preset length and the length of the individual absorbent core 12.

[0042] In this embodiment, the sealing mechanism 25 performs lateral sealing on the nonwoven fabric area corresponding to the sealing spacing to ensure that the nonwoven fabric material 13 forms an independent "packaging bag" for each core, thereby completely avoiding the shedding of the continuously absorbed core 11 fibers and improving product safety and user experience.

[0043] like Figure 2 , 8 As shown in Figure 10, in one embodiment, the sealing mechanism 25 includes a longitudinal sealing unit 251 and a transverse sealing unit 252 arranged sequentially along the processing steps. The longitudinal sealing unit 251 includes a first sealing frame 2511, a first rotating roller 2512, and a longitudinal sealing roller 2513. The first rotating roller 2511 and the longitudinal sealing roller 2513 are mounted on the first sealing frame 2511. A longitudinally protruding sealing part 25131 is provided in the middle position along the circumferential direction. The longitudinal sealing roller 2513 is located above the first rotating roller 2512 and the independent absorbent core 12 to longitudinally seal the overlapping area of ​​the two sides of the nonwoven fabric covering the top surface of the independent absorbent core 12.

[0044] As needed, a first rotation drive is provided at one end of the first rotating roller 2512 and / or the longitudinal sealing roller 2513 to drive the first rotating roller 2512 and / or the longitudinal sealing roller 2513 to rotate, so as to realize the conveying of the independent absorbent core 12 and the nonwoven fabric and to perform the longitudinal sealing operation. A heating module is also provided inside the longitudinal sealing roller. The heating module is used to heat the longitudinal protruding sealing part 25131 to perform longitudinal sealing on the overlapping part of the two sides of the nonwoven fabric covering the independent absorbent core 12, so as to bond the two sides of the nonwoven fabric covering the independent absorbent core 12.

[0045] like Figure 2 , 8 As shown in Figure 10, in one embodiment, the longitudinal sealing unit 251 further includes a first lifting drive 2514, which is mounted on the first sealing frame 2511. The driving end of the first lifting drive 2514 is connected to the longitudinal sealing roller 2513 and is used to drive the longitudinal sealing roller 2513 to adhere to or move away from the roller surface of the first rotating roller 2512, so as to achieve longitudinal sealing of the overlapping area of ​​the two sides of the nonwoven fabric covering the independent absorbent core 12.

[0046] As needed, the longitudinal sealing roller 2513 is also provided with first limiting protrusions 25132 on both sides. The outer diameter of the first limiting protrusions 25132 is equal to the outer diameter of the longitudinal sealing protrusions 25131, and the longitudinal sealing protrusions 25131 is located between the two first limiting protrusions 25132. A conveying area is formed between the longitudinal sealing protrusions 25131 and the first limiting protrusions 25132. The first limiting protrusions 25132 are used to limit the two sides of the independent absorbent core 12 to prevent the independent absorbent core 12 and the nonwoven fabric from shifting during the conveying and sealing process, thereby affecting the sealing effect. The conveying area is set to facilitate the conveying of the independent absorbent core 12 and the nonwoven fabric, and to avoid damage to the remaining parts of the independent absorbent core 12 and the nonwoven fabric that are not sealed.

[0047] like Figure 2 , 11 As shown in Figure 13, in one embodiment, the transverse sealing unit 252 includes a second sealing frame 2521 and two transverse sealing rollers 2522. The two transverse sealing rollers 2522 are mounted on the second sealing frame 2521. The transverse sealing rollers 2522 are arranged with multiple transverse protruding sealing strips 25221 at preset angles along the circumferential direction. The two transverse sealing rollers 2522 are respectively located above and below the independent absorbent core 12, so as to transversely seal the overlapping area of ​​the nonwoven fabric covering one end of the independent absorbent core 12 through the transverse protruding sealing strips 25221 of the two transverse sealing rollers 2522, thereby forming a transverse sealing area 142. Among them, a receiving area is formed between two adjacent transverse raised sealing strips 25221 of the transverse sealing roller 2522. The length of the two adjacent transverse raised sealing strips 25221 of the transverse sealing roller 2522 is equal to the length of the tampon absorbent body 15, so that after one sealing, the receiving area can avoid damage to the conveyed independent absorbent core 12 and the remaining unsealed part of the non-woven fabric, and after conveying, the other end is transversely sealed.

[0048] As needed, a second rotation drive is provided at one end of each of the two transverse sealing rollers 2522. The two second rotation drive works synchronously to drive the two transverse sealing rollers 2522 to rotate synchronously, thereby conveying the independent absorbent core 12 and the nonwoven fabric and performing transverse sealing operation. A heating module is also provided inside the transverse sealing roller 2522. The heating module is used to heat the transverse raised sealing strip 25221 to perform transverse sealing in the nonwoven fabric area corresponding to the sealing spacing, so that the nonwoven fabric covering both ends of the independent absorbent core is bonded together to form a transverse sealing area 142.

[0049] like Figure 2 , 11As shown in Figure 13, in one embodiment, the transverse sealing unit further includes a second lifting drive 2523. The second lifting drive 2523 is mounted on the second sealing frame 2521. The driving end of the second lifting drive 2523 is connected to a transverse sealing roller 2522 and is used to drive the transverse protruding sealing strip 25221 of the transverse sealing roller 2522 to adhere to or move away from the transverse protruding sealing strip 25221 of the other transverse sealing roller 2522, so as to achieve transverse sealing of the overlapping area of ​​the two sides of the nonwoven fabric covering the independent absorbent core 12.

[0050] As needed, such as Figure 12-13 As shown, the transverse sealing roller 2522 is also provided with second limiting protrusions 25222 on both sides. The outer diameter of the second limiting protrusions 25222 is equal to the outer diameter of the transverse sealing strip 25221, and the transverse sealing strip 25221 is located between the two second limiting protrusions 25222. The transverse sealing strip 25221 and the second limiting protrusions 25222 together form a receiving area. The second limiting protrusions 25222 are used to limit the two sides of the independent absorbent core 12, preventing the independent absorbent core 12 and the nonwoven fabric from shifting during the conveying and sealing process, thereby affecting the sealing effect. The receiving area is set to facilitate the conveying of the independent absorbent core 12 and the nonwoven fabric, and to avoid damage to the remaining parts of the independent absorbent core 12 and the nonwoven fabric that are not sealed.

[0051] The production process of this invention is as follows: First, the continuously fed continuous absorbent core 11 is cut into individual, separate absorbent cores 12. Then, the conveying speed is adjusted to create a gap of approximately 10mm between adjacent individual absorbent cores 12. The individual absorbent cores 12 continue to be conveyed forward and then covered with a layer of continuous non-woven fabric. Next, the center line of the non-woven fabric is longitudinally sealed. Then, the non-woven fabric is transversely sealed at the gap between two individual absorbent cores 12. Finally, it is cut at the transversely sealed point, again becoming individual tampon absorbent bodies 15. In this way, each individual absorbent core 12 is completely covered inside the non-woven fabric packaging, with no exposed core fibers. After cutting, the tampon absorbent bodies 15 are spaced apart again and sewn with cotton thread 16, completing the production of the tampon product 17 of the new tea bag product.

[0052] like Figure 2 As shown, a tampon absorbent body production system is used to implement the production process of a tampon absorbent body as described above. The production system includes the following components arranged sequentially along the material conveying direction: The first cutting mechanism 21 is used to perform a first transverse cut on the continuously conveyed continuous absorbent core 11 according to a first preset length to form a plurality of independent absorbent cores 12 that are separated from each other. The first spacing transfer mechanism 22 is used to transport the independent absorbent cores 12 at intervals according to a first preset spacing, so that a sealing gap is formed between two adjacent independent absorbent cores 12; wherein, the sealing gap is smaller than the first preset spacing. The covering mechanism 24 is used to continuously cover the outside of the continuously conveyed independent absorbent core 12 with non-woven fabric material 13 to form an absorbent core array composite strip 14 covered by non-woven fabric; wherein the spacing between two adjacent independent absorbent cores 12 in the absorbent core array composite strip 14 is equal to a first preset spacing. The sealing mechanism 25 is used to perform transverse sealing on the nonwoven fabric area corresponding to the sealing spacing based on the absorbent core array composite tape 14, forming a transverse sealing area 142. The second slitting mechanism 26 is used to perform a second transverse cut on the transverse sealing zone 142 to form multiple tampon absorbent bodies 15 that are completely enclosed and covered by non-woven fabric.

[0053] In one embodiment, a second spacing transfer mechanism 27, a second conveying mechanism 28, a sewing mechanism 29, and a third conveying mechanism 30 are sequentially provided after the second cutting mechanism 26. The second spacing transfer mechanism 27 is used to adjust the second preset spacing of the cut tampon absorbent 15 so that a cotton thread 16 spacing is formed between adjacent tampon absorbents 15. The second conveying mechanism 28 is used to convey the tampon absorbent 15, which has been adjusted by the second preset spacing mechanism 27, to the sewing mechanism 29. Sewing mechanism 29 is used to sew cotton thread 16 onto the tampon absorbent body 15 after the spacing is adjusted, so as to obtain tampon finished product 17. The third conveying mechanism 30 is used to convey the finished cotton sliver 17 out of the container.

[0054] like Figures 14 to 16 As shown, a tampon absorbent body 15 is manufactured by any of the above-described methods for manufacturing tampon absorbent bodies 15.

[0055] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the invention and are protected by patent law.

Claims

1. A process for producing a sanitary tampon absorbent body, characterized by, The method comprises the following steps: a first transverse cutting of continuously conveyed continuous absorbent cores is performed at a first preset length to form a plurality of independent absorbent cores separated from each other; the independent absorbent cores are conveyed at a first preset interval to form an interval between two adjacent independent absorbent cores; wherein the interval is smaller than the first preset interval; a non-woven material is continuously coated on the outside of the continuously conveyed independent absorbent cores to form an absorbent core array composite tape coated with non-woven fabric; wherein the interval between two adjacent independent absorbent cores in the absorbent core array composite tape is equal to the first preset interval; based on the absorbent core array composite tape, a non-woven fabric region corresponding to the interval is transversely sealed to form a transversely sealed area; a second transverse cutting of the transversely sealed area is performed to form a plurality of sanitary tampon absorbents completely enclosed by non-woven fabric.

2. The process for producing a sanitary tampon absorbent body according to Claim 1, wherein Before the step of transversely sealing, the method further comprises the following steps: a longitudinal sealing of the overlapping area of the two side edges of the non-woven fabric coated on the outside of the independent absorbent cores is performed along the direction of the longitudinal center line of the absorbent core array composite tape to bond the two side edges of the non-woven fabric coated on the outside of the continuous absorbent cores to form a longitudinal sealing line.

3. The process for producing a sanitary tampon absorbent body according to Claim 1, wherein Before the step of forming the sanitary tampon absorbent, the method further comprises the following steps: a second preset interval adjustment of the cut sanitary tampon absorbent is performed to form a cotton thread interval between adjacent sanitary tampon absorbents; wherein the cotton thread interval is smaller than the second preset interval; a sewing of the sanitary tampon absorbent after the second preset interval adjustment is performed to obtain a tampon product.

4. The process for producing a sanitary tampon absorbent body according to Claim 1, wherein The interval of the interval is in the range of 5mm to 30mm.

5. The process for producing a sanitary tampon absorbent body according to Claim 1, wherein The first transverse cutting of continuously conveyed continuous absorbent cores at a first preset length comprises the following steps: the continuous absorbent cores are continuously conveyed to a first cutting mechanism through a feeding device; the first cutting mechanism is controlled to cut the continuous absorbent cores according to the first preset length to form the independent absorbent cores.

6. The process for producing a sanitary tampon absorbent body according to Claim 1, wherein The interval conveying of the independent absorbent cores at a first preset interval comprises the following steps: a first interval transfer mechanism is controlled to convey the independent absorbent cores at the first preset interval to a first conveying mechanism, and the independent absorbent cores are conveyed to a coating mechanism through the first conveying mechanism.

7. The process for producing a sanitary tampon absorbent body according to Claim 1, wherein The continuous coating of non-woven fabric material on the outside of the continuously conveyed independent absorbent cores comprises the following steps: a coating mechanism is controlled to sequentially place the received independent absorbent cores at intervals on the continuously conveyed non-woven fabric material, and drive the non-woven fabric material to continuously coat the outside of the independent absorbent cores to form the absorbent core array composite tape.

8. A process for producing a sanitary tampon absorbent body according to claim 7, characterized by, The method further comprises the following steps: the absorbent core array composite tape is conveyed to a sealing mechanism through the coating mechanism, and the sealing mechanism is controlled to seal the conveyed absorbent core array composite tape to form the transversely sealed area; a second cutting mechanism is controlled to transversely cut the transversely sealed area of the absorbent core array composite tape according to a second preset length to form a plurality of sanitary tampon absorbents; wherein the second preset length is equal to the sum of the first preset length and the length of the independent absorbent core.

9. A system for producing a sanitary tampon absorbent body for realizing the production process of a sanitary tampon absorbent body according to any one of claims 1 to 8, characterized in that, The production system comprises, in sequence along a material conveying direction: a first slitting mechanism for performing first transverse cutting on continuously conveyed continuous absorbent cores according to a first preset length to form a plurality of independent absorbent cores separated from each other; a first interval transfer mechanism for interval conveying the independent absorbent cores according to a first preset interval to form an interval between two adjacent independent absorbent cores; wherein the interval is smaller than the first preset interval; a covering mechanism for continuously covering non-woven fabric material outside the continuously conveyed independent absorbent cores to form an absorbent core array composite tape covered by non-woven fabric; wherein an interval between two adjacent independent absorbent cores in the absorbent core array composite tape is equal to the first preset interval; a sealing mechanism for performing transverse sealing on a non-woven fabric area corresponding to the interval based on the absorbent core array composite tape to form a transverse sealing area; a second slitting mechanism for performing second transverse cutting on the transverse sealing area to form a plurality of sanitary tampon absorbent bodies completely enclosed by non-woven fabric.

10. A sanitary tampon absorbent body, characterized by comprising: The sanitary tampon absorbent body is made by the production process of the sanitary tampon absorbent body according to any one of claims 1-8.

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