A method for preparing a comfortable and dry disposable absorbent article

Abstract

The invention relates to the field of sanitary products, and provides a method for preparing a comfortable and dry disposable absorbent article, which solves the problem that the prior art cannot concentrate the polymer material and is uncomfortable to wear due to design defects, and comprises the following steps: forming a plurality of grooves at the bottom of a guide layer by a first pressing roller group; scattering water-absorbing particles into each of the grooves by a scattering component; the scattering component comprises a scattering frame, a chain, a plurality of swinging plates and a plurality of rotating blocks, the bottom wall of the scattering frame is provided with a plurality of quantitative grooves, each of the swinging plates is respectively arranged at the bottom of each of the quantitative grooves to cover each of the quantitative grooves, and each of the rotating blocks is arranged on one side of the chain to rotate each of the swinging plates to open each of the quantitative grooves; the preparation method provided by the invention can concentrate the water-absorbing particles; by arranging the water-absorbing particles in the grooves, even after the grooves are pressurized, the contact area between the absorbent body and the skin can still be reduced by the expansion of the particles after absorbing water.

Description

Technical Field

[0001] The invention relates to the field of sanitary products, and in particular to a method for preparing a comfortable and dry disposable absorbent article. Background Art

[0002] Chinese patent announcement number CN217138463U discloses an online absorbent core composite process system, including a first clamping drive unit, a polymer transfer device, a composite guide roller, a coating device, a clamping device and a cutting device arranged in sequence from upstream to downstream in the direction of the production process, a negative pressure adsorption conveying device is provided below the polymer transfer device and the composite guide roller, a second clamping drive unit is provided above the composite guide roller, the polymer transfer device includes a hopper, a cavity arranged below the hopper, and a transfer wheel rotatably connected to the cavity, the coating device includes a first negative pressure box, a coating plate and a folding drum, the negative pressure adsorption conveying device includes an active traction wheel, two passive wheels arranged up and down, and a mesh belt linked by the active traction wheel and the passive wheel, a composite absorbent core, the composite absorbent core includes a coating non-woven fabric, a fluffy non-woven fabric for accommodating polymer materials in a specific area, and a covering non-woven fabric arranged in sequence from the bottom layer to the surface layer.

[0003] The utility model presses the polymer material into the fluffy non-woven fabric by high-pressure gas ejected from the ventilation groove, and uses the negative pressure in the second negative pressure box to suck the polymer material into the interior of the fluffy non-woven fabric. However, the device cannot place the polymer material in a centralized manner, and cannot centrally arrange the polymer material after it is placed on the surface layer.

[0004] Chinese patent publication number CN209596053U discloses a diaper with a three-dimensional perforated surface layer, comprising a surface layer, an absorbent core, a bottom layer and water-retaining layers on both sides, wherein the surface layer, the absorbent core and the bottom layer are arranged from top to bottom, and the water-retaining layers on both sides are arranged on both sides of the surface layer, and a plurality of three-dimensional embossings are distributed on the surface layer or the bottom layer, and the three-dimensional embossings include a plurality of through holes and protrusions surrounded by the through holes, and the through holes are concave points.

[0005] The protrusions mentioned in the utility model are three-dimensional convex patterns pressed on the top of the surface non-woven fabric or three-dimensional convex patterns pressed on the top of the surface non-woven fabric and then bonded to the next layer to form a hollow shape. This form of protrusion will cause it to be flattened when under pressure after absorbing water or will be flattened without absorbing water, which makes the function of the protrusion to reduce the contact area with the skin disappear, causing it to stick to the skin and cause discomfort when wearing. Summary of the invention

[0006] Therefore, in view of the above problems, the present invention provides a method for preparing a comfortable and dry disposable absorbent article, which solves the problems of the prior art that the polymer material cannot be concentratedly placed and the wearing is uncomfortable due to design defects.

[0007] To achieve the above object, the present invention is achieved through the following technical solutions:

[0008] A method for preparing a comfortable and dry disposable absorbent article comprises preparing a surface layer, preparing an absorbent body, preparing a liquid-impermeable bottom layer, and compounding the surface layer, the absorbent body and the liquid-impermeable bottom layer into one. The preparation of the absorbent body comprises the following preparation steps:

[0009] S1, feeding the skin-friendly layer and the guide layer between the first laminating roller group, forming a plurality of grooves at the bottom of the guide layer by the first laminating roller group, and laminating the skin-friendly layer and the guide layer at the grooves to obtain a first composite layer;

[0010] S2, placing the first composite layer with one side of each groove facing upward and sending it to the bottom of the spreading component, and spreading the water-absorbing particles into each groove through the spreading component;

[0011] S3, feeding the first composite layer sprinkled with water-absorbing particles and the coating layer into between the second laminating roller group, and laminating the first composite layer and the coating layer at each of the grooves by the second laminating roller group to obtain a second composite layer;

[0012] S4, laminating the absorption layer and the covering layer of the second composite layer, and folding both sides of the covering layer to cover the absorption layer;

[0013] The material spreading component is arranged between the first pressing roller group and the second pressing roller group, and the material spreading component includes a material spreading frame, a chain, a plurality of swinging plates and a plurality of rotating blocks. The chain connects the first pressing roller group and the second pressing roller group. The bottom wall of the material spreading frame is provided with a plurality of quantitative grooves. Each of the swinging plates is respectively arranged at the bottom of each of the quantitative grooves to cover each of the quantitative grooves. Each of the rotating blocks is arranged on one side of the chain to rotate each of the swinging plates to open each of the quantitative grooves. The distance between each of the rotating blocks and the chain gradually decreases with the travel direction of the chain. The distance between each of the swinging plates and the chain gradually decreases with the travel direction of the chain. Each of the rotating blocks is arranged at different heights. One end of each of the swinging plates is rotatably connected to the bottom of the material spreading frame through a torsion spring. Each of the swinging plates is provided with an arc angle matched with each of the rotating blocks close to the side of the chain.

[0014] Furthermore, the first pressing roller group includes a first upper pressing roller and a first lower pressing roller, and the first upper pressing roller and the first lower pressing roller are respectively provided with a plurality of first hot pressing protrusions and a plurality of first hot pressing grooves that are matched with each other.

[0015] Furthermore, the second pressing roller group includes a second upper pressing roller and a second lower pressing roller, and the second upper pressing roller and the second lower pressing roller are respectively provided with a plurality of second hot pressing protrusions and a plurality of second hot pressing grooves that are correspondingly matched, and each of the second hot pressing protrusions is annular.

[0016] Furthermore, the depth of each of the second hot pressing grooves is smaller than the depth of each of the first hot pressing grooves.

[0017] Furthermore, the first composite layer is provided with a front area corresponding to the front side of the human body, a rear area corresponding to the rear side of the human body, and a connecting area connecting the front area and the rear area, and each of the grooves is provided in the rear area.

[0018] Furthermore, each of the grooves is in a water drop shape.

[0019] Furthermore, it also includes a smoothing mechanism, which is arranged above the spreading frame. The smoothing mechanism includes two smoothing plates, two smoothing rods and two sliding cylinders. The smoothing plates are arranged at intervals, and the smoothing rods are arranged on the top of the smoothing plates. The sliding cylinders are arranged on both sides of the smoothing rods.

[0020] Furthermore, the water-absorbing particles in each of the grooves have color.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The preparation method provided by the present invention can place the water-absorbing particles in a concentrated manner, and the water-absorbing particles are still concentrated in the grooves after being placed on the surface layer.

[0023] 2. The present invention arranges water-absorbing particles in the grooves, so that even when the grooves are compressed, the contact area between the absorbent body and the skin can be reduced by the expansion of the particles after absorbing water. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the swing plate according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of a preferred swing plate configuration structure according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the groove arrangement structure of an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the groove arrangement structure of a preferred embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of each structural layer of the absorbent body according to an embodiment of the present invention;

[0030] Figure 7 for Figure 1 Enlarged structural diagram at A in the middle.

[0031] Description of Figure Numbers

[0032] Absorbent body 1; skin-friendly layer 11; guide layer 12; absorbent core 13; absorbent layer 131; covering layer 132; first composite layer 14; second composite layer 15; front side area 16; back side area 17; connecting area 18;

[0033] Protrusion 2; groove 21;

[0034] The first pressing roller group 3; the first upper pressing roller 31; the first hot pressing protrusion 311; the first lower pressing roller 32; the first hot pressing groove 321;

[0035] Spreading component 4; spreading frame 41; quantitative slot 411; chain 42; swing piece 43; rotating block 44; arc angle 45; sliding rod 46;

[0036] The second pressing roller group 5; the second upper pressing roller 51; the second hot pressing protrusion 511; the second lower pressing roller 52; the second hot pressing groove 521;

[0037] Smoothing mechanism 6; trowel plate 61; trowel rod 62; sliding cylinder 63. DETAILED DESCRIPTION

[0038] The following will describe the implementation methods of the present invention in detail in conjunction with specific embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Example

[0039] like Figures 1 to 7 As shown, a method for preparing a comfortable and dry disposable absorbent article includes preparing a surface layer, preparing an absorbent body, preparing a liquid-impermeable bottom layer, and compounding the surface layer, the absorbent body and the liquid-impermeable bottom layer into one. The absorbent body 1 includes a skin-friendly layer 11, a guide layer 12 and an absorbent core 13 arranged in sequence from top to bottom. The absorbent core 13 includes an absorbent layer 131 and a coating layer 132. The coating layer 132 is coated on the outside of the absorbent layer 131. The absorbent body 1 is provided with a plurality of convex particles 2. The preparation of the absorbent body includes the following preparation steps:

[0040] S1, feeding the skin-friendly layer 11 and the guide layer 12 between the first laminating roller group 3, forming a plurality of grooves 21 at the bottom of the guide layer by the first laminating roller group 3, and compounding the skin-friendly layer 11 and the guide layer 12 at the grooves 21 to obtain a first compound layer 14;

[0041] S2, placing the first composite layer 14 in each of the grooves 21 with one side facing upward and sending it to the bottom of the spreading component 4, and spreading the water-absorbing particles into each of the grooves 21 through the spreading component 4;

[0042] S3, feeding the first composite layer 14 sprinkled with water-absorbing particles and the coating layer 132 into the second laminating roller group 5, and laminating the first composite layer 14 and the coating layer 132 at each of the grooves 21 by the second laminating roller group 5 to obtain a second composite layer 15;

[0043] S4, attaching the absorption layer 131 to the covering layer 132 of the second composite layer 15, and folding both sides of the covering layer 132 to cover the absorption layer 131;

[0044] The material spreading component 4 is arranged between the first pressing roller group 3 and the second pressing roller group 5, and the material spreading component 4 includes a material spreading frame 41, a chain 42, a plurality of swinging plates 43 and a plurality of rotating blocks 44, the chain 42 connects the first pressing roller group 3 and the second pressing roller group 5, the bottom wall of the material spreading frame 41 is provided with a plurality of quantitative grooves 411, the size of each quantitative groove 411 is smaller than the size of each groove 21, each swinging plate 43 is respectively arranged at the bottom of each quantitative groove 411 to cover each quantitative groove 411, each rotating block 44 is arranged on one side of the chain 42 to rotate each swing piece 43 to open each quantitative slot 411, the distance between each rotating block 44 and the chain 42 gradually decreases with the travel direction of the chain 42, the distance between each swing piece 43 and the chain 42 gradually decreases with the travel direction of the chain 42, each rotating block 44 is arranged at different heights, one end of each swing piece 43 is rotatably connected to the bottom of the spreading frame 41 through a torsion spring, and each swing piece 43 is provided with an arc angle 45 matched with each rotating block 44 on the side close to the chain 42.

[0045] In this embodiment, the protrusions 2 are arranged in a matrix, with one column and three rows; in other preferred embodiments, the protrusions 2 can also be three columns and three rows. In order to make the swinging pieces 43 located in the same row swing at the same time, the bottom of the spreading frame 41 is slidably provided with sliding rods 46 with the same number as the rotating blocks 44, and one end of each sliding rod 46 is in contact with each rotating block 44, and each sliding rod 46 is provided with a protrusion 47 in contact with the swinging piece in the same row. Similarly, the end of each sliding rod 46 in contact with each rotating block 44 is also provided with an arc angle 45; in other preferred embodiments, the protrusions 2 are not arranged in a matrix, and the corresponding protrusions 2 in adjacent rows can be staggered.

[0046] The first lamination roller group 3 includes a first upper lamination roller 31 and a first lower lamination roller 32, and the first upper lamination roller 31 and the first lower lamination roller 32 are respectively provided with a plurality of first hot pressing protrusions 311 and a plurality of first hot pressing grooves 321 that are correspondingly matched, wherein each of the first hot pressing protrusions 311 is in a water drop shape, and the first hot pressing grooves 321 are in a corresponding shape.

[0047] The second pressing roller group 5 includes a second upper pressing roller 51 and a second lower pressing roller 52, and the second upper pressing roller 51 and the second lower pressing roller 52 are respectively provided with a plurality of second hot pressing protrusions 511 and a plurality of second hot pressing grooves 521 that are correspondingly matched. Each of the second hot pressing protrusions 511 is annular, and the annular second hot pressing protrusions 511 can press the first composite layer 14 and the covering layer 132 at the edge of each of the grooves 21 to form a closed cavity in the groove 21; and the depth of each of the correspondingly arranged second hot pressing grooves 521 is smaller than the depth of each of the first hot pressing grooves 321. On the one hand, the groove can be made larger in size before spreading the material to facilitate spreading the material. On the other hand, it is used to provide the fabric size for the pressing of the second hot pressing protrusion 511. At the same time, the depth of the groove 21 can be reduced to avoid the foreign body feeling when wearing.

[0048] The first composite layer 14 is provided with a front area 16 corresponding to the front side of the human body, a rear area 17 corresponding to the rear side of the human body, and a connecting area 18 connecting the front area and the rear area. In the present embodiment, each of the convex particles 2 is arranged in the rear area 17, mainly to avoid reducing the contact area between the absorbent body 1 and the skin when the infant is sleeping soundly. In other preferred embodiments, each of the convex particles 2 can also be arranged at the same time in the front area 16 and the rear area 17, which are two areas that have more contact with the skin.

[0049] Each of the grooves 21 is in the shape of a water drop, that is, each of the protrusions 2 is in the shape of a water drop, which means that the height of the protrusion 2 protruding from the surface of the surface layer is gradually decreasing from the big end of the water drop to the tip, thereby avoiding the foreign body feeling when wearing due to the setting of the protrusion 2. At the same time, the width of the protrusion 2 protruding from the surface of the surface layer is gradually changing, and the tip of the protrusion 2 can be set to face the front side area to achieve a diversion effect. The present application does not make specific restrictions on the specific size and number of the protrusions 2, and it is adjusted according to actual conditions.

[0050] It also includes a smoothing mechanism 6, which is arranged above the spreading frame 41. The smoothing mechanism 6 includes two smoothing plates 61, two smoothing rods 62 and two sliding cylinders 63. The smoothing plates 61 are arranged at intervals, and the smoothing rods 62 are arranged on the top of the smoothing plates 61. The sliding cylinders 63 are arranged on both sides of the smoothing rods 62. The setting of the smoothing mechanism 6 is used to continuously replenish the quantitative grooves 411 of the spreading component 4 to achieve continuous production.

[0051] The water-absorbing particles in each of the grooves 21 have colors. The water-absorbing particles are made of polymer water-absorbing resin. The colored polymer water-absorbing resin is an existing product and can be purchased on the market, so it will not be described here. The colored water-absorbing particles can be used by caregivers to determine whether they need to be replaced by observation after they expand after absorbing water.

[0052] Working principle:

[0053] When spreading the material, the sliding cylinder 63 drives the smoothing rod to drive the smoothing plate 61 to move from one side of the spreading frame 41 to the other side to fill the quantitative groove 411, and then each rotating block 44 respectively abuts against the arc angle 45 on each swinging piece 43, and each rotating block continues to move under the drive of the chain 42 and drives the rotation of each swinging piece 43 to make the water-absorbing particles in the quantitative groove 411 fall.

[0054] 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 method for preparing a comfortable and dry disposable absorbent article, comprising preparing a surface layer, preparing an absorbent body, preparing a liquid-impermeable bottom layer, and combining the surface layer, the absorbent body and the liquid-impermeable bottom layer into one, characterized in that: The preparation of the absorbent body comprises the following preparation steps: S1, feeding the skin-friendly layer and the guide layer between the first laminating roller group, forming a plurality of grooves at the bottom of the guide layer by the first laminating roller group, and laminating the skin-friendly layer and the guide layer at the grooves to obtain a first composite layer; S2, placing the first composite layer with one side of each groove facing upward and sending it to the bottom of the spreading component, and spreading the water-absorbing particles into each groove through the spreading component; S3, feeding the first composite layer sprinkled with water-absorbing particles and the coating layer into between the second laminating roller group, and laminating the first composite layer and the coating layer at each of the grooves by the second laminating roller group to obtain a second composite layer; S4, laminating the absorption layer and the covering layer of the second composite layer, and folding both sides of the covering layer to cover the absorption layer; The material spreading component is arranged between the first pressing roller group and the second pressing roller group, and the material spreading component includes a material spreading frame, a chain, a plurality of swinging plates and a plurality of rotating blocks. The chain connects the first pressing roller group and the second pressing roller group. The bottom wall of the material spreading frame is provided with a plurality of quantitative grooves. Each of the swinging plates is respectively arranged at the bottom of each of the quantitative grooves to cover each of the quantitative grooves. Each of the rotating blocks is arranged on one side of the chain to rotate each of the swinging plates to open each of the quantitative grooves. The distance between each of the rotating blocks and the chain gradually decreases with the travel direction of the chain. The distance between each of the swinging plates and the chain gradually decreases with the travel direction of the chain. Each of the rotating blocks is arranged at different heights. One end of each of the swinging plates is rotatably connected to the bottom of the material spreading frame. Each of the swinging plates is provided with an arc angle matched with each of the rotating blocks close to the side of the chain.

2. The method for preparing a comfortable and dry disposable absorbent article according to claim 1, characterized in that: The first pressing roller group includes a first upper pressing roller and a first lower pressing roller, and the first upper pressing roller and the first lower pressing roller are respectively provided with a plurality of first hot pressing protrusions and a plurality of first hot pressing grooves that are matched with each other.

3. The method for preparing a comfortable and dry disposable absorbent article according to claim 2, characterized in that: The second pressing roller group includes a second upper pressing roller and a second lower pressing roller, and the second upper pressing roller and the second lower pressing roller are respectively provided with a plurality of second hot pressing protrusions and a plurality of second hot pressing grooves that are matched with each other, and each of the second hot pressing protrusions is annular.

4. The method for preparing a comfortable and dry disposable absorbent article according to claim 3, characterized in that: The depth of each of the second hot pressing grooves is smaller than the depth of each of the first hot pressing grooves.

5. The method for preparing a comfortable and dry disposable absorbent article according to claim 1, characterized in that: The first composite layer is provided with a front area corresponding to the front side of the human body, a rear area corresponding to the rear side of the human body, and a connecting area connecting the front area and the rear area, and each of the grooves is provided in the rear area.

6. The method for preparing a comfortable and dry disposable absorbent article according to claim 1, characterized in that: Each of the grooves is in a water drop shape.

7. The method for preparing a comfortable and dry disposable absorbent article according to claim 1, characterized in that: It also includes a smoothing mechanism, which is arranged above the spreading frame. The smoothing mechanism includes two smoothing plates, two smoothing rods and two sliding cylinders. The smoothing plates are arranged at intervals, the smoothing rods are arranged on the top of the smoothing plates, and the sliding cylinders are arranged on both sides of the smoothing rods.

8. The method for preparing a comfortable and dry disposable absorbent article according to claim 1, characterized in that: The water-absorbing particles in each of the grooves have color.

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