CN113786284B - Paper diaper core body manufacturing process - Google Patents
Paper diaper core body manufacturing process Download PDFInfo
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- CN113786284B CN113786284B CN202111008862.5A CN202111008862A CN113786284B CN 113786284 B CN113786284 B CN 113786284B CN 202111008862 A CN202111008862 A CN 202111008862A CN 113786284 B CN113786284 B CN 113786284B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Manufacturing & Machinery (AREA)
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Abstract
The invention relates to a manufacturing process of a paper diaper core, which comprises the following steps: (1) manufacturing a first core layer, (2) compounding upper-layer non-woven fabric, (3) performing first pressing, (4) manufacturing a second core layer, and (5) performing second pressing; the invention relates to the field of disposable sanitary products, wherein a core body adopts a double-layer core body, compared with the traditional absorbent paper core body, a second core body of wood pulp is beneficial to improving the diffusion length and diffusion speed of urine, solves the problem that the urine is absorbed in the middle and is not diffused back and forth, improves the utilization rate of the core body, and simultaneously, a first core body at the lower layer fixes high polymers in a grid, so that the use of fluffy non-woven fabrics and upper and lower layers of dust-free paper in the traditional absorbent paper core body is reduced, the thickness of the core body is effectively reduced, the absorption capacity of a product is kept, the technical problem that the core body is difficult to keep the thinness of the product, and the diffusion and absorption of the product can be improved.
Description
Technical Field
The invention relates to the field of disposable sanitary products, in particular to a process for manufacturing a paper diaper core.
Background
At present, the existing core body structure mainly has three types, namely a traditional wood pulp and polymer mixed core body, a water-absorbent paper core body and a traditional wood pulp polymer core body, and the three core bodies all have obvious defects. The core I is prepared by mixing wood pulp with high polymers, so that more wood pulp products are thicker and are easy to agglomerate and break after being used; the core body II is thin, but the diffusion of the material is not as good as wood pulp because the core body is made of non-woven fabric or dust-free paper, and more high molecules are distributed on the fluffy non-woven fabric due to the process characteristics, so that the problem of gel blocking is easily caused after liquid is absorbed, and the absorption of urine is further influenced. The core three uses the combination of two cores, and although the overall diffusion is improved relative to the core two, the product thickness is still thicker. Therefore, the invention solves the defects of the existing three cores, can keep the thinness of the product, and can improve the diffusion and absorption of the product.
Chinese patent application No.: 201921755112.2, discloses a ventilative glue wood pulp core, wraps up in cloth including wood pulp core, and the core wraps up in that the cloth wraps up outside the wood pulp core, and the wood pulp core wraps up has the clearance and this clearance intussuseption is filled with the polymer and absorbs water the granule and forms the layer that absorbs water with the inboard of cloth and, and top surface, the bottom surface that the core wrapped up in the cloth inwards cave in and form the air permeability groove with wood pulp core fixed connection. This core wood pulp mixes with the polymer, needs to add more wood pulp for the product is thick partially, and uses the easy conglomeration fracture of back.
Disclosure of Invention
Therefore, in order to solve the above problems, the present invention provides a diaper core manufacturing process. The core solves the technical problems that the core is difficult to keep the thinness of the product, and the diffusion and absorption of the product can be improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a manufacturing process of a paper diaper core body comprises the following steps:
(1) manufacturing a first core layer: conveying the bottom layer non-woven fabric to a first die wheel, wherein an adsorption template is arranged on the outer edge of the first die wheel, a positive integer number of modules are arranged on the adsorption template, high polymer materials are spread on the first die wheel, the high polymer materials on each module form a first core body in a blocky or strip-shaped structure, a plurality of first cores are arranged at intervals, the bottom layer non-woven fabric is compounded with the plurality of first cores, and the plurality of first cores form a first core layer;
(2) compounding the upper non-woven fabric: compounding the upper layer of non-woven fabric on the top of the bottom layer of non-woven fabric and the top of the first core;
(3) first pressing: the first pressing mechanism comprises a first pressing roller and a second pressing roller, a pressing groove corresponding to the first die wheel upper die block is formed in the first pressing roller, the second pressing roller is of a roller-shaped structure, the bottom layer of non-woven fabric is attached to the second pressing roller, the upper layer of non-woven fabric is attached to the first pressing roller, and after hot pressing, an uneven top surface is formed, the top surface with the first core body protrudes upwards, and the top surface without the first core body is recessed downwards;
(4) manufacturing a second core layer: the wood pulp enters a second die wheel, the wood pulp is fed into the second die wheel, a wood pulp core body is compounded with upper non-woven fabric, the upper non-woven fabric is uneven, the first core body blocks an adsorption plate of the second die wheel, a plurality of airtight areas can be formed on the adsorption plate of the second die wheel, and the unblocked parts generate suction to the wood pulp, so the wood pulp can be adsorbed onto the upper non-woven fabric without the first core body, the wood pulp forms a plurality of second core bodies on the upper non-woven fabric, the plurality of second core bodies form a second core body layer, the wood pulp and the high polymer material are distributed in a staggered mode, namely the first core body and the second core body are distributed in a staggered mode, and meanwhile, the top surface of the core body is filled with the wood pulp;
(5) and (3) second pressing: and finally, pressing through a second pressing mechanism, and flatly pressing the core body through the second pressing mechanism to form the paper diaper core body.
Further:
in the step (3), the first pressing mechanism is a hot pressing roller mechanism, after the first pressing mechanism performs hot pressing, the non-distributed area of the first core is pressed and fixed to form a grid-shaped core structure with clear height, and the first core is located in the grid.
And (2) spraying glue on the bottom non-woven fabric before the bottom non-woven fabric enters the first die wheel in the step (1).
The glue spraying of the bottom non-woven fabric is point-shaped glue spraying to form a plurality of colloids, the part of the bottom non-woven fabric connected with the first core is a first glue spraying part, the rest parts of the bottom non-woven fabric are second glue spraying parts, the colloid density of the first glue spraying part is high, the colloid density of the second glue spraying part close to the first core is low, and the colloid density of the colloids close to the central lines of the two first cores is high.
The first core body is of a rectangular structure and is arranged on the bottom non-woven fabric at equal intervals.
The module on the first mould wheel has the negative pressure, and the bottom non-woven fabrics spills before the first mould wheel at macromolecular material and enters the mould wheel adsorption plate in advance, and the module passes through adsorption affinity with macromolecular material absorption and adhesion on the bottom non-woven fabrics.
And a projection plane formed by the projection of the first core layer along the vertical direction and the projection of the second core layer along the vertical direction has no gap, and the projection of the first core layer along the vertical direction and the projection of the second core layer along the vertical direction have an overlapped part.
The top surface of the second core body is planar, and the bottom surface of the second core body is arc-surface-shaped.
The depth of module is 3 ~ 4mm, and the width is 30mm, and length is 40mm, and the interval is 15mm about two adjacent modules, and the interval is 15mm from top to bottom.
The polymeric material is SAP.
By adopting the technical scheme, the invention has the beneficial effects that:
the core body adopts a double-layer core body, the first core body layer at the lower layer is a full-high-molecular absorption area, the second core body layer at the upper layer is a wood pulp diffusion area, compared with the traditional absorbent paper core body, the second core body of the wood pulp is beneficial to improving the diffusion length and the diffusion speed of urine, the problem that the urine is absorbed in the middle in a concentrated mode and is not diffused front and back is solved, the utilization rate of the core body is improved, meanwhile, the first core body at the lower layer fixes high molecules in grids, the use of fluffy non-woven fabrics and upper and lower layers of dust-free paper in the traditional absorbent paper core body is reduced, the thickness of the core body is effectively reduced, and the absorption capacity of a product is kept; when liquid enters the core body, one part of liquid penetrates through the upper layer of non-woven fabric and flows to the first core body, the first core body absorbs the liquid, the other part of liquid flows to the second core body, the second core body absorbs the liquid, and part of liquid on the second core body flows out to the first core body for absorption; the invention has simple process, simple structure of the adopted equipment, low manufacturing cost of the equipment, low electric energy consumed by producing the core body, thinner thickness of the core body, good liquid absorption effect by less materials, low production cost and simple and convenient equipment maintenance. Furthermore, if hot pressing is carried out in a hot pressing mode, the first core is located in the grid, and the core is thin due to the structure; furthermore, glue is sprayed in a dot mode, the density of glue near the center line of the first core is high, when the amount of liquid is high, the liquid props up the upper-layer non-woven fabric, part of glue of the upper-layer non-woven fabric falls off, so that the buffer space between the upper-layer non-woven fabric and the lower-layer non-woven fabric is enlarged, the liquid is buffered, and the liquid is prevented from leaking laterally; furthermore, no gap exists on a projection surface formed by the projection of the first core layer along the vertical direction and the projection of the second core layer along the vertical direction, and the projection of the first core layer along the vertical direction and the projection of the second core layer along the vertical direction have an overlapped part, so that liquid can be absorbed by the first core layer or the second core layer, and the liquid is prevented from directly permeating the upper-layer non-woven fabric and the bottom-layer non-woven fabric; furthermore, the bottom surface of the second core body is arc-surface-shaped, so that the diffusion and the flow guide of liquid are facilitated.
Drawings
FIG. 1 is a cross-sectional view of a core;
FIG. 2 is a top view of the core;
FIG. 3 is a schematic view of the structure of the core when it absorbs liquid;
FIG. 4 is a schematic view of glue-spraying of a base nonwoven fabric;
fig. 5 is a schematic structural view of the core after hot pressing.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and detailed description.
Referring to fig. 1 to 5, the present embodiment provides a process for manufacturing a core of a diaper, including the following steps:
(1) manufacturing a first core layer: the method comprises the following steps that a bottom layer non-woven fabric 1 is conveyed to a first die wheel, an adsorption template is arranged on the outer edge of the first die wheel, a positive integer number of modules are arranged on the adsorption template, high polymer materials are spread on the first die wheel, the modules on the first die wheel have negative pressure, the bottom layer non-woven fabric 1 is firstly fed onto a die wheel adsorption plate before the high polymer materials are spread on the first die wheel, the high polymer materials are adsorbed and adhered onto the bottom layer non-woven fabric through adsorption force by the modules, the high polymer materials on each module form a first core body with a rectangular structure, the first core bodies are rectangular structures, the first core bodies are arranged on the bottom layer non-woven fabric at equal intervals, the bottom layer non-woven fabric is compounded with a plurality of first core bodies, and the first core bodies form a first core layer 2; before the bottom non-woven fabric enters the first die wheel, performing punctiform glue spraying on the bottom non-woven fabric to form a plurality of colloids 10, wherein the part of the bottom non-woven fabric connected with the first core is a first glue spraying part, and the rest parts of the bottom non-woven fabric are second glue spraying parts;
(2) compounding the upper non-woven fabric: compounding the upper non-woven fabric 3 on the top of the bottom non-woven fabric and the top of the first core;
(3) first pressing: carrying out pressing through a first pressing mechanism, wherein the first pressing mechanism comprises a first pressing roller and a second pressing roller, a pressing groove corresponding to the first die wheel upper die block is formed in the first pressing roller, the second pressing roller is of a roller-shaped structure, the bottom layer of non-woven fabric is attached to the second pressing roller, the upper layer of non-woven fabric is attached to the first pressing roller, and after hot pressing, an uneven top surface is formed, the top surface with the first core body is raised upwards, and the top surface without the first core body is depressed downwards;
(4) manufacturing a second core layer: get into the second mould wheel, with wood pulp unloading in the second mould wheel, the wood pulp core is compound with upper non-woven fabrics, because upper non-woven fabrics is uneven, first core with the adsorption plate separation of second mould wheel, can form a plurality of airtight regions on the adsorption plate of second mould wheel, the separation part produces suction to wood pulp, so wood pulp can be adsorbed to the upper non-woven fabrics of no first core on, wood pulp forms a plurality of second cores on upper non-woven fabrics, the top surface of second core is planar, and the bottom surface is the arcwall form, and a plurality of second cores form second core layer 4, wood pulp and macromolecular material dislocation distribution, first core and second core dislocation distribution promptly, and simultaneously, wood pulp fills in the core top surface, first core layer along the projection of vertical direction with there is not the space in the projection face of second core layer along the projection of vertical direction formation, first core layer along the projection of vertical direction with second core layer 4 has the coincidence along the projection of vertical direction A moiety;
(5) and (3) second pressing: and finally, pressing through a second pressing mechanism, and flatly pressing the core body through the second pressing mechanism to form the paper diaper core body.
In the step (3), the first pressing mechanism may be a hot press roller mechanism, and after the first pressing mechanism performs hot press, the non-distributed area of the first core is pressed and fixed to form a grid-shaped core structure with distinct heights, as shown in fig. 5, the first core is located in the grid; this kind of structure, when liquid got into, be difficult to form buffer memory space between upper non-woven fabrics and the bottom non-woven fabrics, the water conservancy diversion effect is relatively poor, specifically sets up according to the condition.
In above-mentioned step (1), also can be for spouting comprehensively to glue or other glue spraying modes of spouting of bottom non-woven fabrics, spout glue comprehensively and make upper non-woven fabrics and bottom non-woven fabrics connect closely, when liquid entered into, be difficult to form the buffer memory space between upper non-woven fabrics and the bottom non-woven fabrics, the water conservancy diversion effect is relatively poor, specifically sets up according to the circumstances.
The first core body can be in a long strip shape, a polygonal shape or other shapes, and is arranged according to the situation.
The depth of the modules is 3-4 mm, the width is 30mm, the length is 40mm, the left-right interval of two adjacent modules is 15mm, the upper-lower interval is 15mm, and other numerical values can be set according to the situation.
The polymer material is SAP, which is a known material and will not be described herein.
The use mode of the invention is as follows:
when liquid flows into the core body, one part of liquid flows to the first core body through the upper non-woven fabric, the first core body absorbs the liquid, the other part of liquid flows to the second core body, the second core body absorbs the liquid, the second core body layer is a wood pulp diffusion area, part of liquid on the second core body is diffused to the first core body to be absorbed, the second core body is favorable for improving the diffusion length and the diffusion speed of the urine, the absorption mode is characterized in that the effective absorption area of the core body is large, the amount of wood pulp in the middle of the second core body is large, the amount of wood pulp on two sides is small, the diffusion and the flow guide of part of liquid to the periphery of the second core body are favorable, and a flow guide space is formed between the first core body and the second core body, namely the upper non-woven fabric provides a certain flow space for the liquid, the absorption capacity of liquid flow guide is improved, and the diffusion and absorption capacity of the core body is strong; when the liquid volume is great, liquid struts upper non-woven fabrics, as figure 3, and the part colloid between upper non-woven fabrics and the bottom non-woven fabrics drops for the buffer memory space between upper non-woven fabrics and the lower non-woven fabrics increases, caches liquid, prevents liquid side leakage, has improved the ability that liquid absorbed the water conservancy diversion.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A paper diaper core body manufacturing process is characterized in that: the method comprises the following steps:
(1) manufacturing a first core layer: conveying the bottom layer non-woven fabric to a first die wheel, wherein an adsorption template is arranged on the outer edge of the first die wheel, a positive integer number of modules are arranged on the adsorption template, high polymer materials are spread on the first die wheel, the high polymer materials on each module form a first core body in a blocky or strip-shaped structure, a plurality of first cores are arranged at intervals, the bottom layer non-woven fabric is compounded with the plurality of first cores, and the plurality of first cores form a first core layer;
(2) compounding the upper non-woven fabric: compounding the upper non-woven fabric on the top of the bottom non-woven fabric and the top of the first core;
(3) first pressing: the first pressing mechanism comprises a first pressing roller and a second pressing roller, a pressing groove corresponding to the first die wheel upper die block is formed in the first pressing roller, the second pressing roller is of a roller-shaped structure, the bottom layer of non-woven fabric is attached to the second pressing roller, the upper layer of non-woven fabric is attached to the first pressing roller, and after hot pressing, an uneven top surface is formed, the top surface with the first core body protrudes upwards, and the top surface without the first core body is recessed downwards;
(4) manufacturing a second core layer: feeding wood pulp into a second die wheel, feeding the wood pulp into the second die wheel, compounding the wood pulp core body with the upper layer of non-woven fabric, blocking the adsorption plate of the second die wheel by the first core body due to the unevenness of the upper layer of non-woven fabric, a plurality of air-tight areas are formed on the adsorption plate of the second die wheel, the unblocked parts generate suction to the wood pulp, so that wood pulp is adsorbed on the upper non-woven fabric without the first core, the wood pulp forms a plurality of second cores on the upper non-woven fabric, the plurality of second cores form a second core layer, the wood pulp and the high polymer material are distributed in a staggered way, namely the first core body and the second core body are distributed in a staggered way, simultaneously, the wood pulp fills the top surface of the core body, no gap exists on a projection surface formed by the projection of the first core body layer along the vertical direction and the projection of the second core body layer along the vertical direction, a projection of the first core layer in a vertical direction has an overlapping portion with a projection of the second core layer in the vertical direction;
(5) and (3) second pressing: and finally, pressing through a second pressing mechanism, and flatly pressing the core body through the second pressing mechanism to form the paper diaper core body.
2. The manufacturing process of the diaper core body according to claim 1, characterized in that: in the step (3), the first pressing mechanism is a hot pressing roller mechanism, after the first pressing mechanism performs hot pressing, the non-distributed area of the first core is pressed and fixed to form a grid-shaped core structure with clear height, and the first core is located in the grid.
3. The manufacturing process of the diaper core body according to claim 1, characterized in that: and (2) spraying glue on the bottom non-woven fabric before the bottom non-woven fabric enters the first die wheel in the step (1).
4. The manufacturing process of the diaper core body as claimed in claim 3, wherein: the glue spraying of the bottom non-woven fabric is point-shaped glue spraying to form a plurality of colloids, the part of the bottom non-woven fabric connected with the first core is a first glue spraying part, the rest parts of the bottom non-woven fabric are second glue spraying parts, the colloid density of the first glue spraying part is high, the colloid density of the second glue spraying part close to the first core is low, and the colloid density of the colloids close to the central lines of the two first cores is high.
5. The manufacturing process of the diaper core body according to claim 1, characterized in that: the first core body is of a rectangular structure and is arranged on the bottom layer of non-woven fabric at equal intervals.
6. The manufacturing process of the diaper core body according to claim 1, characterized in that: the module on the first mould wheel has the negative pressure, and the bottom non-woven fabrics spills before the first mould wheel at macromolecular material and enters the mould wheel adsorption plate in advance, and the module passes through adsorption affinity with macromolecular material absorption and adhesion on the bottom non-woven fabrics.
7. The manufacturing process of the diaper core body according to claim 1, wherein: the top surface of the second core body is planar, and the bottom surface of the second core body is arc-surface-shaped.
8. The manufacturing process of the diaper core body according to claim 1, wherein: the depth of module is 3 ~ 4mm, and the width is 30mm, and length is 40mm, and the interval is 15mm about two adjacent modules, and the interval is 15mm from top to bottom.
9. The manufacturing process of the diaper core body according to claim 1, characterized in that: the polymeric material is SAP.
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| CN114159233B (en) * | 2021-12-31 | 2022-09-09 | 福建恒安集团有限公司 | Production process of high-strength core |
| CN114917077B (en) * | 2022-05-23 | 2023-04-14 | 福建美可纸业有限公司 | Preparation process of paper diaper absorbing core |
| CN119385759A (en) * | 2025-01-03 | 2025-02-07 | 泉州市嘉华卫生用品有限公司 | Preparation process of composite core |
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| CN209996618U (en) * | 2019-01-23 | 2020-01-31 | 广州市汉氏卫生用品有限公司 | diaper composite core |
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