A production process for enhancing absorbent core, diapers and pull-up pants

Abstract

The invention relates to the field of disposable sanitary products, and provides a production process for an enhanced absorbent core, and diapers and pull-up pants, comprising the steps of conveying a first polymer carrier, feeding wood pulp, feeding SAP, feeding first water-absorbing particles, feeding second water-absorbing particles, and forming a core body. The formed core body has first water-absorbing particles and second water-absorbing particles inside and on the top, respectively. The first water-soluble films of the first water-absorbing particles and the second water-absorbing particles dissolve in water, and the water-absorbing inner layer is released to contact with water, so that water can be absorbed quickly, and the absorption speed and infiltration speed of urine can be greatly improved. The core body has a complex structure and does not need to be formed by multiple processes. It is only formed on a first polymer feeding device, which shortens the length of the equipment, greatly saves production costs, improves the accuracy of feeding at each material position, and solves the technical problem of slow urine absorption speed of the core.

Description

Technical Field

[0001] The invention relates to the field of disposable sanitary products, and in particular to a production process for an enhanced absorbent core and diapers and pull-up pants. Background Art

[0002] The core of existing disposable sanitary products is used as a water-absorbing material, which is usually made of two or more materials. One material has a good diversion effect, such as wood pulp, fluff pulp, etc., and the other material has a good water absorption effect, such as SAP material. Therefore, the ratio of the two materials determines the diversion and water absorption effects of the core. The better the diversion effect, the worse the water absorption effect, and the better the water absorption effect, the worse the diversion effect. Therefore, the diversion effect and the water absorption effect usually restrict each other. When a large amount of urine enters in a short time, it is difficult to absorb all the urine in a short time. The urine absorption speed is slow, and urine leakage is easy to occur. Summary of the invention

[0003] Therefore, in view of the above problems, the present invention proposes a production process for enhancing the absorbent core and diapers and pull-up pants, which solve the technical problem that the core absorbs urine slowly.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A process for producing a core body with enhanced absorption comprises the following steps:

[0006] S1. First polymer carrier transport: The driving device drives the core body to move, thereby driving the first polymer carrier to move, and the first polymer carrier passes through the first polymer unloading device;

[0007] The first polymer feeding device comprises a first feeding bin, a first die wheel arranged at the bottom of the first feeding bin, and a first adsorption device connected to the first die wheel, wherein a first partition is arranged in the first feeding bin, and the first partition divides the first feeding bin into a first cavity and a second cavity, and the first cavity is provided with a first particle bin, two first wood pulp bins, and two first SAP bins arranged side by side, the first particle bin is located in the middle, the two first wood pulp bins are respectively located on both sides of the first particle bin, and the two first SAP bins are respectively located on the outermost sides, the outer wall of the first die wheel is provided with a plurality of adsorption holes, the first die wheel is provided with an adsorption cavity connected to the adsorption holes, the first adsorption device provides negative pressure for the adsorption cavity, and the second cavity is provided with a second particle bin;

[0008] S2. Pulp feeding: The first polymer carrier passes through the first cavity of the first die wheel, the first pulp silo feeds the pulp, and the negative pressure adsorbs the pulp onto the first polymer carrier. The two first pulp silos are located on the inner sides of the two first SAP silos, so that the pulp content in the middle is greater than that on both sides, and the flow conductivity in the middle is better than that on both sides;

[0009] S3. SAP discharge: The first SAP silo discharges SAP, the SAP content on the outside is greater than that in the middle, and the water absorption performance on both sides is better than that in the middle;

[0010] S4. First water-absorbing particles are discharged: the first particle silo discharges the first water-absorbing particles, a large number of the first water-absorbing particles are concentrated in the middle, which improves the rapid water absorption capacity of the middle, and the first water-absorbing particles include a water-absorbing inner layer and a first water-soluble film covering the water-absorbing inner layer;

[0011] During the feeding process of the three materials of wood pulp, SAP and first water-absorbing particles, some materials collide, changing the falling trajectory of some materials and forming the first absorption layer;

[0012] S5. Unloading of the second water-absorbing particles: The first polymer carrier passes through the second cavity of the first die wheel, and the second particle silo unloads the second water-absorbing particles to the top of the first absorption layer;

[0013] S6. Core body forming: The wrapping layer is wrapped by a composite device and a folding wrapping device to form a core body.

[0014] Further:

[0015] The method also includes the following steps: the second polymer carrier passes through a second polymer feeding device, the second polymer feeding device includes a second feeding bin, a second die wheel arranged at the bottom of the second feeding bin, and a second adsorption device connected to the second die wheel, a second partition is arranged in the second feeding bin, and the second partition separates the second feeding bin into a third cavity and a fourth cavity, a second SAP bin and a second wood pulp bin are arranged on the third cavity, and a third particle bin is arranged on the fourth cavity; the second polymer carrier passes through the third cavity of the second die wheel, the second wood pulp bin and the second SAP bin feed wood pulp and SAP onto the second polymer carrier to form a second absorption layer, the second polymer carrier passes through the fourth cavity, the third particle bin feeds third water-absorbing particles to the top of the second absorption layer, and the first absorption layer and the second absorption layer are compounded through a compounding roller device.

[0016] The diameter of the third water-absorbing particles is 1 mm to 3 mm.

[0017] In step S4, a first discharge port is provided at the bottom of the first particle silo, and the size of the first discharge port gradually increases from the front end to the rear end. The first water-absorbing particles falling from the front end of the first discharge port are located at the bottom of the core body, and the first water-absorbing particles falling from the rear end of the first discharge port are located at the top of the core body, so that the number of the first water-absorbing particles in the core body gradually decreases from top to bottom.

[0018] Three adsorption chambers are arranged in the first mold wheel, namely the first adsorption chamber, the second adsorption chamber and the third adsorption chamber. The three adsorption chambers are arranged along the width direction. The second adsorption chamber and the third adsorption chamber are located on both sides of the first adsorption chamber. The polymer material falling on the position of the first adsorption chamber forms a guide part, and the polymer material falling on the second adsorption chamber and the third adsorption chamber forms an absorption part. The adsorption force of the first adsorption chamber is smaller than that of the second adsorption chamber and the third adsorption chamber, so that the thickness of the guide part is smaller than that of the absorption part, and a guide groove is formed on the top of the guide part, and a large number of second water-absorbing particles fall into the guide groove.

[0019] A fourth discharge port is provided at the bottom of the second particle silo along the width direction, and the size of the middle portion of the fourth discharge port is larger than that of the two sides, so that the number of the second absorption particles in the middle portion is greater than that on the two sides.

[0020] The water-absorbing inner layer is also provided with antibacterial and deodorizing particles, and the antibacterial and deodorizing particles include a second water-soluble film and an antibacterial and deodorizing agent coated in the second water-soluble film.

[0021] The diameter of the second water-absorbing particles is less than 3 mm.

[0022] The water-absorbent inner layer includes a powdered water-absorbent material.

[0023] The first water-absorbing particles and the second water-absorbing particles have the same structure.

[0024] The present invention also provides a diaper manufactured based on the above-mentioned production process of an enhanced absorption core, comprising a first liquid-permeable top layer, a core body, and a first liquid-impermeable bottom layer stacked in sequence from top to bottom.

[0025] The present invention also provides a pair of pull-up pants manufactured based on the above-mentioned production process of an enhanced absorption core, comprising a core body, two elastic waistbands connected to the front and rear ends of the core body, a second liquid-permeable top layer provided on the top of the core body, and a second liquid-impermeable bottom layer provided on the bottom of the core body.

[0026] By adopting the above technical solution, the beneficial effects of the present invention are:

[0027] The first absorbent layer formed by the present invention has first water-absorbing particles and second water-absorbing particles inside and on the top respectively. The first water-soluble films of the first water-absorbing particles and the second water-absorbing particles dissolve in water, and the water-absorbing inner layer can contact with water. Since the water-absorbing inner layer has a large density and contains a large amount of water-absorbing materials, it can quickly absorb water. When a large amount of urine enters the top of the first absorbent layer, it contacts with the second water-absorbing particles. The second water-absorbing particles can not only absorb water and increase the absorption speed of urine, but also have flow-guiding spaces between the second water-absorbing particles, which is conducive to water flow. At the same time, the second water-absorbing particles also have a flow-blocking effect and can block the flow of urine. The urine pushes the second water-absorbing particles to flow while contacting with the dissolved second water-absorbing particles. The first absorbent particle is used to absorb urine, and the second absorbent particle is used to absorb urine. The first absorbent particle can absorb urine quickly when part of the urine seeps into the first absorbent particle, and the absorbed urine can leave more seepage space for other urine to seep into the first absorbent particle, which greatly increases the seepage speed of urine. The arrangement of the first absorbent particle and the second absorbent particle can greatly increase the absorption speed and the seepage speed, and effectively prevent the side leakage of urine. The wood pulp content in the middle is greater than that on both sides, and the SAP content on the outer side is greater than that in the middle. The first absorbent layer has a strong flow conductivity in the middle, and the middle is relatively fluffy, which is conducive to the infiltration absorption of feces. The two sides have strong absorption capacity, which can prevent side leakage. At the same time, the absorption capacity in the middle can be improved by the first absorbent particle. The first water-absorbing particle and the second water-absorbing particle are strengthened, which solves the problem that the flow-conducting capacity and the diffusion capacity are mutually restricted, and greatly improves the flow-conducting and diffusion capacity of the entire first absorption layer; the first absorption layer has a complex structure and does not need to be formed by multiple processes. It is only formed on the first polymer feeding device, which shortens the length of the equipment, greatly saves production costs, and improves the accuracy of feeding each material; further, the second absorption layer is separated from the first absorption layer by the third water-absorbing particle to form a buffer space. When the first batch of urine enters the third water-absorbing particle, the third water-absorbing particle can instantly absorb the first batch of urine, leaving infiltration space for subsequent urine, which greatly improves the infiltration speed of urine; further, the third water-absorbing particle The diameter of the three water-absorbing particles is 1mm to 3mm, which ensures the height of the third water-absorbing particles, so that a certain diversion space can be formed at the third water-absorbing particles; further, since urine flows from top to bottom, more urine needs to be absorbed at the top, and the number of the first water-absorbing particles gradually decreases from top to bottom, thereby improving the utilization rate of the first water-absorbing particles and, at the same time, improving the absorption speed and infiltration speed of urine; further, the setting of the three adsorption chambers can form a diversion groove in the middle, thereby improving the diversion effect of the liquid and, at the same time, concentrating a large number of the second water-absorbing particles on the diversion groove; further, the second absorption particles are more in the middle than on both sides, and a large number of the second absorption particles can contact with urine at the first time;Furthermore, the water-absorbing inner layer is also provided with antibacterial and deodorizing particles. After the urine is absorbed, it can also be deodorized through the antibacterial and deodorizing particles. Some antibacterial and deodorizing particles will flow with the urine, and the antibacterial and deodorizing particles will flow to the location where there is more urine, which can better achieve antibacterial and deodorizing. ; BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a simplified structural diagram of the production device of the core body of Example 1.

[0029] Figure 2 This is a front view of the first polymer feeding device in Example 1.

[0030] Figure 3 It is a side view of the first polymer feeding device of Example 1.

[0031] Figure 4 It is a structural schematic diagram of the first feeding port of the first embodiment.

[0032] Figure 5 It is a simplified cross-sectional view of the core body of the first embodiment.

[0033] Figure 6 4 is a simplified cross-sectional view of the first water-absorbing particle of the first embodiment.

[0034] Figure 7 It is a simplified cross-sectional view of another structure of the first water-absorbing particle.

[0035] Figure 8 It is a schematic structural diagram of a diaper according to the first embodiment.

[0036] Fig. 9 It is a simplified cross-sectional view of the diaper of the first embodiment.

[0037] Fig.10 It is a schematic structural diagram of pull-up pants according to the first embodiment.

[0038] Fig.11 It is a simplified cross-sectional view of the pull-up pants of the first embodiment.

[0039] Fig.12 It is a simplified structural diagram of the production device of the core body of Example 2.

[0040] Fig.13 This is a front view of the second polymer feeding device of the second embodiment.

[0041] Fig.14 It is a side view of the second polymer feeding device of the second embodiment.

[0042] Fig.15 It is a simplified cross-sectional view of the core body of the second embodiment.

[0043] Fig.16It is a structural schematic diagram of the unloading range of the first polymer unloading device.

[0044] Reference numerals:

[0045] 1. Core body; 10. Wrapping layer; 11. First polymer carrier; 12. First water-absorbing particles; 121. Water-absorbing inner layer; 122. First water-soluble film; 123. Antibacterial and deodorizing particles; 1231. Second water-soluble film; 1232. Antibacterial and deodorizing agent; 13. First absorption layer; 131. Guide portion; 132. Absorption portion; 133. Guide groove; 14. Second water-absorbing particles; 15. Second polymer carrier; 16. Second absorption layer; 17. Third water-absorbing particles; 2. First polymer carrier; 18. Second water-absorbing inner layer; 19. First water-soluble film; 20. Second water-soluble film; 21. Second water-soluble film; 22. Second water-soluble film; 23. Second water-soluble film; 24. Second water-absorbing particles; 25. First polymer carrier; 26. Second absorption layer; 27. Third water-absorbing particles; 28. First polymer carrier; 29. ​​Second water-absorbing inner layer; 30. Second water-absorbing particles; 31. First water-soluble film; 32. Second water-soluble film; 33. Second water-absorbing agent; 34. First absorption layer; 35. Second water-absorbing particles; 36. Second water-soluble film; 37. Second water-soluble film; 38. Second water-soluble film; 39. Second water-soluble film; 40. Second water-soluble film; 41. Second water-soluble film; 42. Second water-soluble film; 43. Second water-soluble film; 44. Second water-absorbing particles; 45. Second water-soluble film; 46. Second water-soluble film; 47. Second water-absorbing particles; 48. Molecular unloading device; 21, first unloading bin; 211, first partition; 212, first cavity; 213, second cavity; 22, first die wheel; 220, adsorption hole; 221, first adsorption cavity; 222, second adsorption cavity; 223, third adsorption cavity; 23, first adsorption device; 24, first particle bin; 240, first unloading port; 25, first wood pulp bin; 250, second unloading port; 26, first SAP bin; 260, third unloading port; 27, second particle bin; 3. Second polymer feeding device; 31. Second feeding bin; 311. Second partition; 312. Third cavity; 313. Fourth cavity; 32. Second mold wheel; 33. Second adsorption device; 34. Second SAP bin; 35. Second wood pulp bin; 36. Third particle bin; 4. Driving device; 5. Compounding device; 6. Folding and wrapping device; 81. First liquid-permeable top layer; 82. First liquid-impermeable bottom layer; 91. Elastic waist; 92. Second liquid-permeable top layer; 93. Second liquid-impermeable bottom layer. DETAILED DESCRIPTION

[0046] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods. Embodiment 1

[0047] refer to Figures 1 to 9 Embodiment 1 provides a production process of a core body with enhanced absorption, comprising the following steps:

[0048] S1. Conveying the first polymer carrier 11 : the driving device 4 drives the core body 1 to move, thereby driving the first polymer carrier 11 to move, and the first polymer carrier 11 passes through the first polymer unloading device 2 .

[0049] The first polymer feeding device 2 includes a first feeding bin 21, a first die wheel 22 arranged at the bottom of the first feeding bin 21, and a first adsorption device 23 connected to the first die wheel 22. A first partition 211 is arranged in the first feeding bin 21, and the first partition 211 divides the first feeding bin 21 into a first cavity 212 and a second cavity 213. The first cavity 212 is provided with a first particle bin 24, two first wood pulp bins 25, and two first SAP bins 26 arranged side by side. The first particle bin 24 is located in the middle, the two first wood pulp bins 25 are respectively located on both sides of the first particle bin 24, and the two first SAP bins 26 are respectively located at the outermost sides. A plurality of adsorption holes 220 are arranged on the outer wall of the first die wheel 22, and an adsorption cavity connected to the adsorption holes 220 is arranged in the first die wheel 22. The first adsorption device 23 provides negative pressure for the adsorption cavity, and a second particle bin 27 is provided on the second cavity 213.

[0050] S2. Wood pulp discharge: The first polymer carrier 11 passes through the first cavity 212 of the first die wheel 22, and the first wood pulp silo 25 discharges the wood pulp. Negative pressure adsorbs the wood pulp onto the first polymer carrier 11. The two first wood pulp silos 25 are respectively located on the inner sides of the two first SAP silos 26, so that the wood pulp content in the middle is greater than that on both sides, and the flow conduction performance in the middle is better than that on both sides.

[0051] S3. SAP discharge: The first SAP silo 26 discharges SAP. The two first SAP silos 26 are located at the outermost sides. The SAP content at the outer sides is greater than that at the middle. The water absorption performance at both sides is better than that at the middle.

[0052] S4. Unloading the first water-absorbing particles 12: The first particle hopper 24 unloads the first water-absorbing particles 12. A large number of the first water-absorbing particles 12 are concentrated in the middle, which improves the rapid water absorption capacity of the middle. The first water-absorbing particles 12 include a water-absorbing inner layer 121 and a first water-soluble film 122 covering the water-absorbing inner layer 121.

[0053] A first discharge port 240 is provided at the bottom of the first particle silo 24, and the size of the first discharge port 240 gradually increases from the front end to the rear end. The first water-absorbing particles 12 falling from the front end of the first discharge port 240 are located at the bottom of the core body 1, and the first water-absorbing particles 12 falling from the rear end of the first discharge port 240 are located at the top of the core body 1, so that the number of the first water-absorbing particles 12 in the core body 1 gradually decreases from top to bottom.

[0054] During the feeding process of the three materials of wood pulp, SAP and first water-absorbing particles 12 , some of the materials collide with each other, changing the falling trajectory of some of the materials, thereby forming the first absorption layer 13 .

[0055] S5. Feeding the second water-absorbing particles 14 : The first polymer carrier 11 passes through the second cavity 213 of the first die wheel 22 , and the second particle silo 27 feeds the second water-absorbing particles 14 to the top of the first absorption layer 13 .

[0056] Three adsorption chambers are provided in the first mold wheel 22, namely the first adsorption chamber 221, the second adsorption chamber 222 and the third adsorption chamber 223. The three adsorption chambers are arranged along the width direction. The second adsorption chamber 222 and the third adsorption chamber 223 are located on both sides of the first adsorption chamber 221. The polymer material falling on the position of the first adsorption chamber 221 forms a guide portion 131, and the polymer material falling on the second adsorption chamber 222 and the third adsorption chamber 223 forms an absorption portion 132. The adsorption force of the first adsorption chamber 221 is smaller than that of the second adsorption chamber 222 and the third adsorption chamber 223, so that the thickness of the guide portion 131 is smaller than that of the absorption portion 132, and a guide groove 133 is formed at the top of the guide portion 131, and a large number of second water-absorbing particles 14 fall into the guide groove 133.

[0057] A fourth discharge port is provided at the bottom of the second particle silo 27 along the width direction. The size of the middle portion of the fourth discharge port is larger than that of the two sides, so that the number of the second absorption particles in the middle portion is greater than that on the two sides.

[0058] S6. Forming of the core body 1: The wrapping layer 10 is wrapped by the composite device 5 and the folding wrapping device 6 to form the core body 1.

[0059] The first die wheel 22 may also be provided with only one adsorption cavity, and no guide groove 133 is formed on the top of the guide portion 131 , which is specifically provided according to the situation.

[0060] The three adsorption chambers are usually connected to three first adsorption devices 23 respectively, which are arranged according to specific circumstances.

[0061] The water-absorbing inner layer 121 may also be configured as follows: the water-absorbing inner layer 121 is further provided with antibacterial and deodorizing particles 123 , and the antibacterial and deodorizing particles 123 include a second water-soluble film 1231 and an antibacterial and deodorizing agent 1232 coated in the second water-soluble film 1231 .

[0062] The diameter of the second water-absorbing particles 14 is usually set to be less than 3 mm, which can be set according to specific circumstances.

[0063] The first discharge port 240 , the second discharge port 250 and the third discharge port 260 may adopt nozzles, discharge valves or other components, which are well-known components and will not be described in detail here.

[0064] The structures of the first water-absorbing particles 12 and the second water-absorbing particles 14 are usually the same, and their sizes can be the same or different, depending on the specific situation.

[0065] The water-absorbing inner layer 121 is made of SAP material or other water-absorbing materials. The water-absorbing inner layer 121 is usually made of powdered or granular materials, which are specifically configured according to the situation.

[0066] The above-mentioned compounding device 5 and folding and wrapping device 6 are well-known devices and will not be described in detail here.

[0067] The first water-absorbing particles 12 may be evenly distributed, irregularly distributed, or distributed in other layouts, depending on the specific situation.

[0068] The first water-soluble film 122 is made of PVA, and may also be made of other film materials that are soluble in water. These are well-known materials and will not be described in detail herein.

[0069] refer to Fig.10 The present invention also provides a diaper with enhanced absorption, comprising a first liquid-permeable top layer 81, a core body 1, and a first liquid-impermeable bottom layer 82 stacked in sequence from top to bottom.

[0070] refer to Fig.11 The present invention also provides a pull-up pants with enhanced absorption, including a core body 1, two elastic waistbands 91 connected to the front and rear ends of the core body 1, a second liquid-permeable top layer 92 is provided on the top of the core body 1, and a second liquid-impermeable bottom layer 93 is provided on the bottom of the core body 1. Embodiment 2

[0071] refer to Figures 1 to 15 The main difference between the second embodiment and the first embodiment is that the second embodiment further comprises the following steps: the second polymer carrier 15 passes through the second polymer feeding device 3, the second polymer feeding device 3 comprises a second feeding bin 31, a second die wheel 32 arranged at the bottom of the second feeding bin 31, and a second adsorption device 33 connected to the second die wheel 32, a second partition plate 311 is arranged in the second feeding bin 31, and the second partition plate 311 divides the second feeding bin 31 into a third cavity 312 and a fourth cavity 313, and the third cavity 312 is provided with a second SAP feeding bin 33; 4 and the second wood pulp silo 35, and the third particle silo 36 is provided on the fourth cavity 313; the second polymer carrier 15 passes through the third cavity 312 of the second die wheel 32, and the second wood pulp silo 35 and the second SAP silo 34 feed the wood pulp and SAP onto the second polymer carrier 15 to form a second absorption layer 16, the second polymer carrier 15 passes through the fourth cavity 313, and the third particle silo 36 feeds the third water-absorbing particles 17 to the top of the second absorption layer 16, and the first absorption layer 13 and the second absorption layer 16 are compounded by a compounding roller device.

[0072] The diameter of the third water-absorbing particles 17 is usually set to 1 mm to 3 mm, and can also be 0.8 mm, 3.5 mm or other diameters, depending on the specific situation.

[0073] The second mold wheel 32 is also provided with an adsorption cavity.

[0074] The structure of the third water-absorbing particles 17 is usually the same as that of the first water-absorbing particles 12 , and may also be the structure of other water-absorbing particles, depending on the specific situation.

[0075] The first polymer carrier 11 and the second polymer carrier 15 are non-woven fabrics, which are well-known materials and will not be described in detail herein.

[0076] The second absorbent layer 16 of the second embodiment has a more balanced water absorption and diversion effect, and can absorb and divert urine that seeps to the bottom. Due to the special structure of the first absorbent layer 13, a large amount of urine has been diverted and absorbed. Therefore, a small amount of urine entering the second absorbent layer does not need to accelerate its diversion and penetration effect. The structure of the second absorbent layer does not need to be complicated in design, which can save production costs.

[0077] The thickness of the first water-absorbing layer is usually greater than 3 times the thickness of the second water-absorbing layer, and is set according to specific circumstances.

[0078] refer to Fig.16 , the first polymer feeding device 2 of the present invention can also adopt the following structure: the junction of the guide part 131 and the absorption part 132 is the boundary line, the middle of the core body 1 has a center line set along the length direction, the feeding range of the first particle silo 24 is a first trapezoid, the first trapezoid is an isosceles trapezoid, and the two sides of the first trapezoid extend to the boundary line; the feeding range of the first wood pulp silo 25 is a second trapezoid, one side of the second trapezoid extends to the edge of the core body 1, and the other side extends to the intersection line farther away; one side of the third trapezoid extends to the edge of the core body 1, and the other side extends to the center line. The second feeding port 250 of the first wood pulp silo 25 is located directly above the boundary line, and the third feeding port 260 of the first SAP silo 26 is located directly above the edge of the core body 1.

[0079] In this structure, most of the first water-absorbing particles 12 fall into the guide part 131, and a very small part of the first water-absorbing particles 12 collide and move to the absorption part 132; a large amount of wood pulp is fed to the guide part 131, and a small amount of wood pulp will fall into the absorption part 132; a large amount of SAP falls into the absorption part 132, and a small amount of SAP falls into the guide part 131; at the same time, this falling method can reasonably distribute the content of the first water-absorbing particles 12, wood pulp, and SAP at various positions, so that the polymer content falling into the absorption part 132 is more than the polymer content falling into the guide part 131, which is conducive to the formation of the guide groove 133; the entire first absorption layer 13 forms a structure with good diversion effect in the middle and good water absorption effect on both sides. At the same time, the first water-absorbing particles 12 and the second water-absorbing particles 14 enhance the water absorption capacity in the middle, greatly improving the water absorption and diversion effects of the first absorption layer 13.

[0080] When the wood pulp material is unloaded, the two second trapezoids formed by the two first wood pulp bins 25 have a large overlapping part, and the materials will collide with each other. In addition, the negative pressure force of the first adsorption chamber 221 makes the wood pulp material on the guide layer nearly uniform, and a relatively flat guide groove 133 can be formed on the top of the guide layer, rather than forming a guide groove 133 structure with a downward depression in the middle, so that the second water-absorbing particles 14 can be more evenly arranged on the guide groove 133.

[0081] The core body 1 of the present invention can be used for diapers, pull-on pants, sanitary napkins or other disposable sanitary products.

[0082] 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 production process for a core body with enhanced absorption, characterized in that: The following steps are involved: S1. First polymer carrier transport: The driving device drives the core body to move, thereby driving the first polymer carrier to move, and the first polymer carrier passes through the first polymer unloading device; The first polymer feeding device comprises a first feeding bin, a first die wheel arranged at the bottom of the first feeding bin, and a first adsorption device connected to the first die wheel, wherein a first partition is arranged in the first feeding bin, and the first partition divides the first feeding bin into a first cavity and a second cavity, and the first cavity is provided with a first particle bin, two first wood pulp bins, and two first SAP bins arranged side by side, the first particle bin is located in the middle, the two first wood pulp bins are respectively located on both sides of the first particle bin, and the two first SAP bins are respectively located on the outermost sides, the outer wall of the first die wheel is provided with a plurality of adsorption holes, the first die wheel is provided with an adsorption cavity connected to the adsorption holes, the first adsorption device provides negative pressure for the adsorption cavity, and the second cavity is provided with a second particle bin; S2. Pulp feeding: The first polymer carrier passes through the first cavity of the first die wheel, the first pulp silo feeds the pulp, and the negative pressure adsorbs the pulp onto the first polymer carrier. The two first pulp silos are located on the inner sides of the two first SAP silos, so that the pulp content in the middle is greater than that on both sides, and the flow conductivity in the middle is better than that on both sides; S3. SAP discharge: The first SAP silo discharges SAP, the SAP content on the outside is greater than that in the middle, and the water absorption performance on both sides is better than that in the middle; S4. First water-absorbing particles are discharged: the first particle silo discharges the first water-absorbing particles, a large number of the first water-absorbing particles are concentrated in the middle, which improves the rapid water absorption capacity of the middle, and the first water-absorbing particles include a water-absorbing inner layer and a first water-soluble film covering the water-absorbing inner layer; During the feeding process of the three materials of wood pulp, SAP and first water-absorbing particles, some materials collide, changing the falling trajectory of some materials and forming the first absorption layer; S5. Unloading of the second water-absorbing particles: The first polymer carrier passes through the second cavity of the first die wheel, and the second particle silo unloads the second water-absorbing particles to the top of the first absorption layer; S6. Core body forming: The wrapping layer is wrapped by a composite device and a folding wrapping device to form a core body.

2. The process for producing a core with enhanced absorption according to claim 1, characterized in that: The following steps are also included: The second polymer carrier passes through the second polymer feeding device, which includes a second feeding bin, a second die wheel arranged at the bottom of the second feeding bin, and a second adsorption device connected to the second die wheel. A second partition is arranged in the second feeding bin, and the second partition separates the second feeding bin into a third cavity and a fourth cavity. The third cavity is provided with a second SAP bin and a second wood pulp bin, and the fourth cavity is provided with a third particle bin. The second polymer carrier passes through the third cavity of the second die wheel, and the second wood pulp bin and the second SAP bin feed wood pulp and SAP onto the second polymer carrier to form a second absorption layer. The second polymer carrier passes through the fourth cavity, and the third particle bin feeds third water-absorbing particles to the top of the second absorption layer. The first absorption layer and the second absorption layer are compounded through a compound roller device.

3. The process for producing a core with enhanced absorption according to claim 1, characterized in that: In step S4, a first discharge port is provided at the bottom of the first particle silo, and the size of the first discharge port gradually increases from the front end to the rear end. The first water-absorbing particles falling from the front end of the first discharge port are located at the bottom of the core body, and the first water-absorbing particles falling from the rear end of the first discharge port are located at the top of the core body, so that the number of the first water-absorbing particles in the core body gradually decreases from top to bottom.

4. The process for producing a core with enhanced absorption according to claim 1, characterized in that: Three adsorption chambers are arranged in the first mold wheel, namely the first adsorption chamber, the second adsorption chamber and the third adsorption chamber. The three adsorption chambers are arranged along the width direction. The second adsorption chamber and the third adsorption chamber are located on both sides of the first adsorption chamber. The polymer material falling on the position of the first adsorption chamber forms a guide part, and the polymer material falling on the second adsorption chamber and the third adsorption chamber forms an absorption part. The adsorption force of the first adsorption chamber is smaller than that of the second adsorption chamber and the third adsorption chamber, so that the thickness of the guide part is smaller than that of the absorption part, and a guide groove is formed on the top of the guide part, and a large number of second water-absorbing particles fall into the guide groove.

5. The process for producing a core with enhanced absorption according to claim 1, characterized in that: A fourth discharge port is provided at the bottom of the second particle silo along the width direction, and the size of the middle portion of the fourth discharge port is larger than that of the two sides, so that the number of the second absorption particles in the middle portion is greater than that on the two sides.

6. The process for producing a core with enhanced absorption according to claim 1, characterized in that: The water-absorbing inner layer is also provided with antibacterial and deodorizing particles, and the antibacterial and deodorizing particles include a second water-soluble film and an antibacterial and deodorizing agent coated in the second water-soluble film.

7. The process for producing a core with enhanced absorption according to claim 1, characterized in that: The water-absorbent inner layer includes a powdered water-absorbent material.

8. The process for producing a core with enhanced absorption according to claim 1, characterized in that: The first water-absorbing particles and the second water-absorbing particles have the same structure.

9. A diaper manufactured based on the production process of an absorbent core according to claim 1, characterized in that: The invention comprises a first liquid-permeable top layer, a core body and a first liquid-impermeable bottom layer which are stacked in sequence from top to bottom.

10. A pair of pull-on pants manufactured based on the production process of the core with enhanced absorption according to claim 1, characterized in that: It comprises a core body and two elastic waists connected to the front and rear ends of the core body. The top of the core body is provided with a second liquid-permeable top layer, and the bottom of the core body is provided with a second liquid-impermeable bottom layer.

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