Preparation process of dry and leak-proof diaper

Abstract

The invention relates to the field of disposable sanitary products, and provides a preparation process for a dry and leak-proof diaper, which comprises the steps of pre-folding, applying elastic bands, forming leak-proof partition edges, cutting hydrophobic fabrics, manufacturing a core layer, compounding, applying Velcro, and forming a diaper body. The invention replaces a traditional liquid-permeable top layer with a hydrophobic fabric, and the folded parts on both sides of the hydrophobic fabric are folded inwards and covered with elastic bands to form leak-proof partition edges, and there is no need to compound the leak-proof partition edges separately, thereby simplifying the manufacturing process, saving materials, and reducing the production cost. The hollowing out in the middle of the hydrophobic fabric is formed on a mold wheel, and the traditional compounding method is not used for compounding, so that the misalignment and offset of the convex strips and the hollowing out are prevented, the process is simplified, the production efficiency and the quality of the product are improved, and the technical problem that babies are prone to having red buttocks and emitting bad odors when wearing diapers is solved.

Description

Technical Field

[0001] The invention relates to the field of disposable sanitary products, and in particular to a preparation process of dry and leak-proof diapers. Background Art

[0002] Existing diapers mainly include a liquid-permeable top layer, a core layer, a liquid-impermeable bottom layer, a leak-proof edge, Velcro, etc. During production, the leak-proof edge is formed by folding a hydrophobic fabric in half and covering it with an elastic band, and then the leak-proof edge is laminated to the liquid-impermeable bottom layer. This structure has a complex process, and during the laminating process, the width of the leak-proof edge is small, and the leak-proof edge may be offset, affecting the quality of the product. In addition, the liquid-permeable top layer is made of absorbent non-woven fabric. When urine enters the diaper, most of the urine diffuses and is absorbed in the middle. After the liquid-permeable top layer is wet, it will diffuse to the entire liquid-permeable top layer, causing the entire liquid-permeable top layer to be wet, causing a large area of ​​human skin to come into contact with urine. If worn for a long time, the baby is prone to red buttocks and odor.

[0003] Chinese patent application number: 201921937638.2, provides an anti-reverse osmosis diaper, including a diaper body, waistbands at both ends of the diaper body, side leakage strips on both sides of the diaper body, and the diaper body is composed of a liquid permeable surface layer, a drainage layer, a composite fabric waterproof layer and a water-absorbing core from top to bottom, an indentation is provided on the liquid permeable surface layer, and drainage grooves are evenly provided on the drainage layer. The drainage grooves are funnel-shaped, and the large end of the drainage grooves is located on the drainage layer, and the small end of the drainage grooves extends into the water-absorbing core. When the liquid permeable top layer of the diaper is wet, it will spread to the entire liquid permeable top layer, causing the entire liquid permeable top layer to be wet, so that a large area of ​​human skin is in contact with urine. If worn for a long time, the baby is prone to red buttocks and odor. Summary of the invention

[0004] Therefore, in view of the above problems, the present invention proposes a preparation process of a dry and leak-proof diaper, which solves the technical problem that babies are prone to red buttocks and odor when wearing diapers.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A preparation process of a dry and leak-proof diaper comprises the following steps:

[0007] S1. Pre-folding:

[0008] During the conveying process of the hydrophobic fabric, the edges of both sides of the hydrophobic fabric are pre-folded by the first folding device, the folded part is the folding part, a crease is formed on the hydrophobic fabric, and the folding part is folded upward by 30 degrees to 120 degrees;

[0009] S2. Applying rubber band:

[0010] The first glue spraying device sprays glue on the folding part and / or the hydrophobic fabric near the folding part, and the unwinding roller unwinds the elastic band, and the elastic band is transported to the two ends of the hydrophobic fabric and fixed on the folding part and / or the hydrophobic fabric near the folding part by glue;

[0011] S3. Leak-proof edge molding:

[0012] The second folding device presses the folding part of the hydrophobic fabric inwardly and downwardly to fold it, and the folding part is fixed to the top of the hydrophobic fabric by glue, so as to form leak-proof partition edges on both sides of the hydrophobic fabric;

[0013] S4. Cutting hydrophobic fabrics:

[0014] The hydrophobic fabric passes through the die wheel, and a first adsorption chamber is provided in the die wheel, and the first adsorption chamber is connected to the first adsorption device. The die wheel is connected to the first driving device that drives the die wheel to rotate. A plurality of first adsorption holes are provided on the outer wall of the die wheel, and the first adsorption holes adsorb the hydrophobic fabric on the die wheel through adsorption force. A plurality of rectangular or annular grooves arranged equidistantly are provided on the outer wall of the die wheel, and the grooves are located in the middle, and the grooves are provided with first adsorption holes; a cutting device is provided outside the die wheel, and the cutting device includes a cutting roller, a second driving device that drives the cutting roller to rotate, and a second adsorption device connected to the cutting roller. A blade corresponding to the groove body is provided on the cutting roller, and the adsorption force of the second adsorption device is greater than that of the first adsorption device. The area surrounded by the blade is the adsorption area, and a second adsorption hole is provided in the adsorption area. The second adsorption chamber is connected to the second adsorption hole, and the blade can be inserted into the outer wall of the groove body to cut the middle of the hydrophobic fabric to form a hollow, and the cut excess fabric is adsorbed by the second adsorption hole with greater adsorption force, and the excess fabric rotates along the cutting roller, and the cleaning device cleans the excess fabric from the cutting roller;

[0015] S5. Manufacturing the core layer:

[0016] The polymer material discharge bin discharges the polymer material, and the polymer material forms a core layer. The polymer material falling into the tank body forms a convex strip of annular or rectangular structure, and a buffer groove is formed in the middle of the convex strip;

[0017] S6. Compound:

[0018] The liquid-impermeable bottom layer is unrolled and transported, and the first compounding device compounds the liquid-impermeable bottom layer with the core layer;

[0019] S7. Apply Velcro:

[0020] The application device applies the Velcro to the liquid-impermeable base layer;

[0021] S8. Diaper body molding:

[0022] The slitting device cuts to form a sheet-shaped diaper body.

[0023] Further:

[0024] The cleaning device includes a brush and a collection frame arranged at the bottom of the brush. The cutter device is located at the bottom of the die wheel. The second adsorption hole is located in the middle of the adsorption area. There is no second adsorption hole on the surrounding side of the adsorption area. When the adsorption area rotates to the top, the surrounding side of the excess fabric sags due to gravity, and the brush blocks the excess fabric, so that the excess fabric leaves the adsorption area and falls into the collection frame.

[0025] The first folding device includes at least two first folding mechanisms, which include a first bottom roller rotatably arranged at the bottom of the hydrophobic fabric, two pairs of first clamping wheels rotatably arranged on both sides of the hydrophobic fabric, and two supporting wheels that can lean against the edge of the folding portion. The folding portion of the hydrophobic fabric is clamped between the first bottom roller and the supporting wheel to form a fold at the supporting wheel. The upper end of the folding portion of the hydrophobic fabric is clamped at the first clamping wheel, and the first clamping wheel gradually folds the folding portion upward.

[0026] The lower end of the support wheel is a V-shaped structure, and the lower end portion of the support wheel is a rounded structure.

[0027] The supporting wheel sleeve is provided with a buffer sleeve, and the buffer sleeve is made of silica gel or rubber material.

[0028] The first folding device folds the hydrophobic fabric at an angle of 90 degrees.

[0029] The second folding device comprises a second bottom roller rotatably arranged at the bottom of the hydrophobic fabric, and two pairs of pressing rollers rotatably arranged at both sides of the hydrophobic fabric. The folding portion of the hydrophobic fabric is clamped between the second bottom roller and the pressing roller to achieve folding.

[0030] More than three quarters of the area of ​​the core layer of each diaper body corresponds to the hollowing.

[0031] The cutter device is provided with a first punching portion, which can punch holes at the front and rear ends of the hollowing to form a first through hole.

[0032] The cutter device is provided with a second punching portion, which can punch holes on the left and right sides of the hollowing to form second through holes.

[0033] By adopting the above technical solution, the beneficial effects of the present invention are:

[0034] The present invention replaces the traditional liquid-permeable top layer with a hydrophobic fabric. The folded parts on both sides of the hydrophobic fabric are folded inwards and covered with elastic bands to form leak-proof partitions. There is no need to compound leak-proof partitions separately, which simplifies the manufacturing process, saves materials, and reduces production costs. Urine can contact the core layer through the hollowing of the hydrophobic fabric. The hydrophobic fabric has a water-repellent effect. Urine will not spread to the hydrophobic fabric and then wet the human body over a large area, thereby preventing the baby from having a red bottom and emitting a bad smell. The folded part is pre-folded to form a crease, and then the elastic band and glue are applied to perform a second fold. The composite method adopts the method of double folding, which makes the folding more stable and avoids the situation that the folding is offset or the glue overflows due to applying glue first and then folding; the hollow in the middle of the hydrophobic fabric is cut by a cutting device on the die wheel, and the cut hydrophobic fabric is firmly adsorbed on the die wheel by adsorption force, which can prevent the hydrophobic fabric from deformation. At the same time, a groove body is arranged on the die wheel to form a convex strip and a buffer groove, which can accurately set the convex strip in the hollow, and the convex strip has a good supporting effect on the entire hydrophobic surface layer, and does not adopt the traditional composite method. The composite material prevents the misalignment between the convex strip and the hollowing out, and at the same time, simplifies the process, improves production efficiency and product quality; the convex strip has the function of guiding and blocking, preventing excessive urine from flowing onto the hydrophobic surface layer; further, the cutting device has an adsorption area, which can generate a greater adsorption force to separate the excess fabric after cutting from the die wheel; further, the cleaning device uses a brush to clean the excess fabric into the collection frame; further, the hydrophobic fabric can be folded step by step through at least two first folding mechanisms, A crease is formed at the position of the supporting wheel to improve the folding accuracy, and the supporting wheel and the first clamping wheel contact the hydrophobic fabric in a rolling friction manner to reduce friction and prevent wear of the hydrophobic fabric; further, the lower end of the supporting wheel is a V-shaped structure, and the V-shaped end corresponds to the crease, which can improve the folding accuracy; further, when there is too much urine, a small amount of urine flows onto the hydrophobic fabric and can seep through the first through hole to prevent leakage from the back or the front; further, when there is too much urine, a small amount of urine flows onto the hydrophobic fabric and can seep through the second through hole to prevent side leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a simplified diagram of the production process of the diaper body of the present invention.

[0036] Figure 2 It is a structural schematic diagram of the first folding mechanism.

[0037] Figure 3 It is another structural schematic diagram of the first folding mechanism.

[0038] Figure 4 It is a structural schematic diagram of the second folding device.

[0039] Figure 5It is a schematic diagram of the structure of the die wheel, polymer feed bin, cutter device and brush.

[0040] Figure 6 It is a simplified structural diagram of the mold wheel outer edge in the unfolded state.

[0041] Figure 7 It is a simplified structural diagram of the outer edge of the cutting roller in the unfolded state.

[0042] Figure 8 It is a schematic diagram of the structure of the diaper body.

[0043] Fig. 9 It is a simplified cross-sectional view of the diaper body.

[0044] Fig.10 It is a structural schematic diagram of a cutting roller provided with a first punching portion.

[0045] Fig.11 yes Fig.10 A schematic structural diagram of a cutting roller having a second punching portion.

[0046] Fig.12 It is a structural schematic diagram of a diaper body provided with a first through hole and a second through hole.

[0047] Fig.13 yes Figure 1 A structural schematic diagram of a second composite device is provided above.

[0048] Fig.14 Schematic diagram of the structure of the second composite device.

[0049] Fig.15 It is a simplified cross-sectional view of a diaper body provided with a skin-friendly layer.

[0050] Reference numerals:

[0051] 1. Diaper body; 11. Hydrophobic fabric; 110. Hollow; 111. Leak-proof edge; 112. Elastic; 113. First through hole; 114. Second through hole; 12. Core layer; 121. Raised strip; 122. Buffer groove; 123. Skin-friendly layer; 13. Liquid-impermeable bottom layer; 14. Velcro; 2. First folding device; 21. First bottom roller; 22. First clamping wheel; 23. Support wheel; 3. Second folding device; 31. Second bottom roller; 32. Pressing roller; 41. First glue spraying device; 42. Unwinding roller; 43. Polymer unloading bin; 44. First Compound device; 45, applying device; 46, slitting device; 5, die wheel; 51, first adsorption chamber; 52, first adsorption device; 53, first adsorption hole; 54, trough body; 6, cutter device; 61, cutter roller; 62, second adsorption device; 63, blade; 64, adsorption area; 65, second adsorption hole; 66, first punching part; 67, second punching part; 7, cleaning device; 71, brush; 72, collecting frame; 8, second compound device; 81, compound roller; 810, heating chamber; 82, third driving device; 83, heating tube; 84, pressure strip. DETAILED DESCRIPTION

[0052] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0053] refer to Figures 1 to 9 This embodiment provides a preparation process of a dry and leak-proof diaper, comprising the following steps:

[0054] S1. Pre-folding:

[0055] During the conveying process of the hydrophobic fabric 11, the two side edges of the hydrophobic fabric 11 are pre-folded by the first folding device 2, and the folded part is the folding portion, a crease is formed on the hydrophobic fabric 11, and the folding portion is folded upward by 90 degrees.

[0056] refer to Figure 2 and Figure 3 The first folding device 2 includes two first folding mechanisms, which include a first bottom roller 21 rotatably arranged at the bottom of the hydrophobic fabric 11, two pairs of first clamping wheels 22 rotatably arranged on both sides of the hydrophobic fabric 11, and two supporting wheels 23 that can lean against the edge of the folding portion. The folding portion of the hydrophobic fabric 11 is clamped between the first bottom roller 21 and the supporting wheels 23, and a crease is formed at the supporting wheels 23. The upper end of the folding portion of the hydrophobic fabric 11 is clamped along the first clamping wheel 22, and the first clamping wheel 22 gradually folds the folding portion upward.

[0057] S2. Applying elastic band 112:

[0058] The first glue spraying device 41 sprays glue on the folding part and / or the hydrophobic fabric 11 near the folding part, and the unwinding roller 42 unwinds the elastic band 112, and the elastic band 112 is transported to the two ends of the hydrophobic fabric 11 and fixed on the folding part and / or the hydrophobic fabric 11 near the folding part by glue.

[0059] S3. Leak-proof partition 111 molding:

[0060] refer to Figure 4 The second folding device 3 presses the folding part of the hydrophobic fabric 11 inward and downward to fold it, and the folding part is fixed to the top of the hydrophobic fabric 11 by glue, forming leak-proof partition edges 111 on both sides of the hydrophobic fabric 11.

[0061] The second folding device 3 includes a second bottom roller 31 rotatably disposed at the bottom of the hydrophobic fabric 11 and two pairs of pressing rollers 32 rotatably disposed at both sides of the hydrophobic fabric 11. The folding portion of the hydrophobic fabric 11 is clamped between the second bottom roller 31 and the pressing roller 32 to achieve folding.

[0062] S4. Cutting hydrophobic fabric 11:

[0063] refer to Figure 5 and Figure 6 The hydrophobic fabric 11 passes through the mold wheel 5, a first adsorption chamber 51 is provided in the mold wheel 5, the first adsorption chamber 51 is connected to the first adsorption device 52, the mold wheel 5 is connected to the first driving device that drives the mold wheel 5 to rotate, a plurality of first adsorption holes 53 are provided on the outer wall of the mold wheel 5, the first adsorption holes 53 adsorb the hydrophobic fabric 11 on the mold wheel 5 through adsorption force, a plurality of rectangular grooves 54 arranged equidistantly are provided on the outer wall of the mold wheel 5, the grooves 54 are located in the middle, and the grooves 54 have the first adsorption holes 53; reference Figure 7 The die wheel 5 has a cutting device 6 on the outside, which includes a cutting roller 61, a second driving device for driving the cutting roller 61 to rotate, and a second adsorption device 62 connected to the cutting roller 61. The cutting roller 61 is provided with a blade 63 corresponding to the groove body 54. The adsorption force of the second adsorption device 62 is greater than the adsorption force of the first adsorption device 52. The area surrounded by the blade 63 is an adsorption area 64. A second adsorption hole 65 is provided in the adsorption area 64. The second adsorption cavity is connected to the second adsorption hole 65. The blade 63 can be inserted into the outer wall of the groove body 54 to cut the middle part of the hydrophobic fabric 11 to form a hollow 110. More than three quarters of the area of ​​the core layer 12 of each diaper body 1 corresponds to the hollow 110. The cut excess fabric is adsorbed by the second adsorption hole 65 with greater adsorption force and rotates along the cutting roller 61. The cleaning device 7 cleans the excess fabric from the cutting roller 61.

[0064] The cleaning device 7 includes a brush 71 and a collecting frame 72 disposed at the bottom of the brush 71. The cutting device 6 is located at the bottom of the die wheel 5. Figure 7The second adsorption hole 65 is located in the middle of the adsorption area 64, and there is no second adsorption hole 65 on the surrounding side of the adsorption area 64. When the adsorption area 64 rotates to the top, the surrounding side of the excess fabric sags due to gravity, and the brush 71 blocks the excess fabric, so that the excess fabric leaves the adsorption area 64 and falls into the collection frame 72.

[0065] S5. Manufacturing the core layer 12:

[0066] refer to Figure 8 and Fig. 9 The polymer material discharge bin 43 discharges the polymer material to form a core layer 12. A portion of the polymer material is discharged onto the hydrophobic fabric 11, and another portion of the polymer material is discharged onto the mold wheel 5 at the hollow 110. The polymer material falling into the groove body 54 forms a rectangular convex strip 121, and a buffer groove 122 is formed in the middle of the convex strip 121.

[0067] S6. Compound:

[0068] The liquid-impermeable bottom layer 13 is unrolled and transported, and the first laminating device 44 laminates the liquid-impermeable bottom layer 13 and the core layer 12 together.

[0069] S7. Apply Velcro 14:

[0070] The application device 45 applies the hook and loop fastener 14 to the liquid-impermeable bottom layer 13 .

[0071] S8. Diaper body 1 molding:

[0072] The slitting device 46 cuts and forms the diaper body 1 in sheet form.

[0073] The lower end of the supporting wheel 23 is a V-shaped structure, the lower end of the supporting wheel 23 is a rounded structure, and the supporting wheel 23 is provided with a buffer sleeve, which is made of silicone or rubber material.

[0074] The above-mentioned groove body 54 can also be annular, elliptical or other shaped structures, which can be set according to specific circumstances.

[0075] The first glue spraying device 41, the polymer material bin 43, the first compounding device 44, the applying device 45, and the slitting device 46 are well-known devices and will not be described in detail herein.

[0076] The angle at which the hydrophobic fabric 11 is folded by the first folding device 2 is usually 30 degrees to 120 degrees, such as 60 degrees, 100 degrees, etc., which is set according to specific circumstances.

[0077] The first driving device and the second driving device mentioned above can adopt motors or other driving devices, which are well-known devices and will not be described in detail here.

[0078] refer to Figure 1In one embodiment, after the rubber band 112 is sprayed with glue and compounded, it is slowly pressed down and folded by the first folding mechanism, and then pressed down by the second folding device 3 to form a leak-proof partition 111.

[0079] refer to Fig.10 In one embodiment, the cutter device 6 is provided with a first punching portion 66, which can punch holes at the front and rear ends of the hollow 110 to form a first through hole 113. Fig.11 In one embodiment, the cutter device 6 is provided with a second punching portion 67 , and the second punching portion 67 can punch holes on the left and right sides of the hollow 110 to form second through holes 114 .

[0080] refer to Fig.12 In one embodiment, the number of the first through holes 113 gradually decreases along the outer direction, and the number of the second through holes 114 gradually decreases along the outer direction.

[0081] refer to Fig.15 In one embodiment, a skin-friendly layer 123 is provided on the core layer 12. The skin-friendly layer 123 is an elastic non-woven fabric, which can be insulated and dry, and can also prevent the polymer from leaking out. Fig.13 and Fig.14 In step S4, after the hydrophobic fabric 11 is cut and hollowed out 110, the skin-friendly layer 123 and the hydrophobic fabric 11 are compounded by a second compounding device 8, and the second compounding device 8 includes a compounding roller 81 and a third driving device 82 for driving the compounding roller 81 to rotate. A heating chamber 810 is provided in the compounding roller 81, and a heating tube 83 is provided in the heating chamber 810. The heating tube 83 is connected to the compounding roller 81 through a rotary joint. A pressure strip 84 corresponding to the groove body 54 is provided on the compounding roller 81. The skin-friendly layer 123 only contacts with the pressure strip 84 and does not contact with other parts of the compounding roller 81. The pressure strip 84 contacts with the skin-friendly layer 123. The pressure strip 84 is hot-pressed to stretch and deform the skin-friendly layer 123 locally, thereby changing the structure of the skin-friendly layer 123, and a structure corresponding to the convex strip 121 is formed on the skin-friendly layer 123.

[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 process for preparing dry and leak-proof diapers, characterized in that: The following steps are involved: S1. Pre-folding: During the conveying process of the hydrophobic fabric, the edges of both sides of the hydrophobic fabric are pre-folded by the first folding device, the folded part is the folding part, a crease is formed on the hydrophobic fabric, and the folding part is folded upward by 30 degrees to 120 degrees; The first folding device comprises at least two first folding mechanisms, the first folding mechanisms comprising a first bottom roller rotatably arranged at the bottom of the hydrophobic fabric, two pairs of first clamping wheels rotatably arranged at both sides of the hydrophobic fabric, and two supporting wheels capable of leaning against the edges of the folding portion, the folding portion of the hydrophobic fabric is clamped between the first bottom roller and the supporting wheels, a fold is formed at the supporting wheels, the upper end of the folding portion of the hydrophobic fabric is clamped along the first clamping wheel, and the first clamping wheel gradually folds the folding portion upwards; S2. Applying rubber band: The first glue spraying device sprays glue on the folding part and / or the hydrophobic fabric near the folding part, and the unwinding roller unwinds the elastic band, and the elastic band is transported to the two ends of the hydrophobic fabric and fixed on the folding part and / or the hydrophobic fabric near the folding part by glue; S3. Leak-proof edge molding: The second folding device presses the folding part of the hydrophobic fabric inwardly and downwardly to fold it, and the folding part is fixed to the top of the hydrophobic fabric by glue, so as to form leak-proof partition edges on both sides of the hydrophobic fabric; S4. Cutting hydrophobic fabrics: The hydrophobic fabric passes through the die wheel, and a first adsorption chamber is provided in the die wheel, and the first adsorption chamber is connected to the first adsorption device. The die wheel is connected to the first driving device that drives the die wheel to rotate. A plurality of first adsorption holes are provided on the outer wall of the die wheel, and the first adsorption holes adsorb the hydrophobic fabric on the die wheel through adsorption force. A plurality of rectangular or annular grooves arranged equidistantly are provided on the outer wall of the die wheel, and the grooves are located in the middle, and the grooves are provided with first adsorption holes; a cutting device is provided outside the die wheel, and the cutting device includes a cutting roller, a second driving device that drives the cutting roller to rotate, and a second adsorption device connected to the cutting roller. A blade corresponding to the groove body is provided on the cutting roller, and the adsorption force of the second adsorption device is greater than that of the first adsorption device. The area surrounded by the blade is the adsorption area, and a second adsorption hole is provided in the adsorption area. The second adsorption chamber is connected to the second adsorption hole, and the blade can be inserted into the outer wall of the groove body to cut the middle of the hydrophobic fabric to form a hollow, and the cut excess fabric is adsorbed by the second adsorption hole with greater adsorption force, and the excess fabric rotates along the cutting roller, and the cleaning device cleans the excess fabric from the cutting roller; S5. Manufacturing the core layer: The polymer material discharge bin discharges the polymer material, and the polymer material forms a core layer. The polymer material falling into the tank body forms a convex strip of annular or rectangular structure, and a buffer groove is formed in the middle of the convex strip; S6. Compound: The liquid-impermeable bottom layer is unrolled and transported, and the first compounding device compounds the liquid-impermeable bottom layer with the core layer; S7. Apply Velcro: The application device applies the Velcro to the liquid-impermeable base layer; S8. Diaper body molding: The slitting device cuts to form a sheet-shaped diaper body.

2. The process for preparing a dry and leak-proof diaper according to claim 1, characterized in that: The cleaning device includes a brush and a collection frame arranged at the bottom of the brush. The cutter device is located at the bottom of the die wheel. The second adsorption hole is located in the middle of the adsorption area. There is no second adsorption hole on the surrounding side of the adsorption area. When the adsorption area rotates to the top, the surrounding side of the excess fabric sags due to gravity, and the brush blocks the excess fabric, so that the excess fabric leaves the adsorption area and falls into the collection frame.

3. The process for preparing a dry and leak-proof diaper according to claim 1, characterized in that: The lower end of the support wheel is a V-shaped structure, and the lower end portion of the support wheel is a rounded structure.

4. The process for preparing a dry and leak-proof diaper according to claim 1, characterized in that: The supporting wheel sleeve is provided with a buffer sleeve, and the buffer sleeve is made of silica gel or rubber material.

5. The process for preparing a dry and leak-proof diaper according to claim 1, characterized in that: The first folding device folds the hydrophobic fabric at an angle of 90 degrees.

6. The process for preparing a dry and leak-proof diaper according to claim 1, characterized in that: The second folding device comprises a second bottom roller rotatably arranged at the bottom of the hydrophobic fabric, and two pairs of pressing rollers rotatably arranged at both sides of the hydrophobic fabric. The folding portion of the hydrophobic fabric is clamped between the second bottom roller and the pressing roller to achieve folding.

7. The process for preparing a dry and leak-proof diaper according to claim 1, characterized in that: More than three quarters of the area of ​​the core layer of each diaper body corresponds to the hollowing.

8. The process for preparing a dry and leak-proof diaper according to claim 1, characterized in that: The cutter device is provided with a first punching portion, which can punch holes at the front and rear ends of the hollowing to form a first through hole.

9. The process for preparing a dry and leak-proof diaper according to claim 1, characterized in that: The cutter device is provided with a second punching portion, which can punch holes on the left and right sides of the hollowing to form second through holes.

Images