CN113855401A - Corrugated absorption composite core and manufacturing method thereof - Google Patents
Corrugated absorption composite core and manufacturing method thereof Download PDFInfo
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- CN113855401A CN113855401A CN202111228025.3A CN202111228025A CN113855401A CN 113855401 A CN113855401 A CN 113855401A CN 202111228025 A CN202111228025 A CN 202111228025A CN 113855401 A CN113855401 A CN 113855401A
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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
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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
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- 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
- A61F13/53708—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 the layer having a promotional function on liquid propagation in at least one direction
- A61F13/53713—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 the layer having a promotional function on liquid propagation in at least one direction the layer having a promotional function on liquid propagation in the vertical direction
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- 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
- A61F13/5376—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 characterised by the performance of the layer, e.g. acquisition rate, distribution time, transfer time
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- 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
- A61F13/15203—Properties of the article, e.g. stiffness or absorbency
- A61F2013/15284—Properties of the article, e.g. stiffness or absorbency characterized by quantifiable properties
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- 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
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- A—HUMAN NECESSITIES
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- 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
- A61F2013/530131—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 being made in fibre but being not pulp
- A61F2013/530138—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 being made in fibre but being not pulp characterized by the fibre length
- A61F2013/530145—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 being made in fibre but being not pulp characterized by the fibre length being short
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- A—HUMAN NECESSITIES
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- 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
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- A—HUMAN NECESSITIES
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- 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
- A61F2013/530481—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 superabsorbent materials, i.e. highly absorbent polymer gel materials
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- Animal Behavior & Ethology (AREA)
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Abstract
The invention relates to the technical field of sanitary articles, in particular to a corrugated absorption composite core and a manufacturing method thereof, wherein the corrugated absorption composite core comprises an upper coating layer, a fluffy layer and a lower coating layer which are sequentially arranged from top to bottom; the fluffy layer is corrugated, and the concave positions of the upper surface and the lower surface of the fluffy layer are provided with super absorbent resin particles; the manufacturing method of the corrugated absorption composite core comprises the steps of firstly heating and forming the fluffy layer into a corrugated structure through a corrugated pressing roller, secondly gluing super absorbent resin particles at the concave positions of the upper surface of the corrugated fluffy layer, and then gluing the super absorbent resin particles on the upper surface of the lower coating layer; and finally compounding the upper coating layer, the fluffy layer and the lower coating layer from top to bottom. The fluffy layer is corrugated, so that the absorption capacity of the absorption composite core is high, the utilization rate of the core is high, the whole manufacturing method is simple, and the processing efficiency of the absorption composite core is greatly improved.
Description
Technical Field
The invention relates to the technical field of sanitary products, in particular to a corrugated absorption composite core and a manufacturing method thereof.
Background
The disposable sanitary product comprises a baby diaper, adult Lala pants, female menstrual pants and the like, wherein the absorption composite core body is used as the most core structure of the disposable sanitary product, and has the functions of quickly capturing and locking liquid, enhancing the absorption performance of the product and preventing reverse osmosis.
The absorption composite core body used by disposable sanitary products in the market at present is a composite core body formed by combining a non-woven material and a super absorbent resin, wherein the super absorbent resin is adhered on the plane non-woven material, although the whole absorption composite core body is thinner and lighter due to the design, the liquid absorption capacity of the absorption composite core body is poorer, and the utilization rate of the whole absorption composite core body is poorer.
Chinese patent publication No. CN212439076U discloses an absorbent core, which comprises a multi-layer body, wherein the multi-layer body is sequentially provided with an upper coating layer, a first polymer absorption layer, a fluffy cotton layer, a second polymer absorption layer and a lower coating layer from top to bottom, wherein the absorbent core is obtained by oppositely bending two side ends of the multi-layer body at least once, and the bent two side ends form a groove on the upper surface of the absorbent core, although the absorbent core improves the infiltration speed to a certain extent, the area where the first polymer absorption layer and the second polymer absorption layer are arranged is smaller, and the rapid liquid absorption capability is poorer.
Disclosure of Invention
The invention provides a prismatic absorption composite core body which has high liquid absorption performance and can be fully utilized and a manufacturing method thereof, aiming at overcoming the technical problems of small high water absorption resin dispersion area, poor liquid absorption capacity and low utilization rate of the composite core body of the prior absorption composite core body in the prior art.
In order to solve the technical problems, the invention adopts the technical scheme that: a corrugated absorption composite core body comprises an upper coating layer, a fluffy layer and a lower coating layer which are sequentially arranged from top to bottom; the fluffy layer is corrugated, and the concave positions of the upper surface and the lower surface of the fluffy layer are provided with super absorbent resin particles.
In the invention, the upper layer of the fluffy layer is provided with the upper coating layer, the lower layer of the fluffy layer is provided with the lower coating layer, the fluffy layer is corrugated, and the super absorbent resin particles are distributed in the groove positions of the upper surface and the lower surface of the fluffy layer; the fluffy layer is arranged in a corrugated shape, so that the dispersion area of the super absorbent resin particles in the fluffy layer is increased, the liquid absorption capacity of the absorption composite core can be greatly improved, in addition, the corrugated structure of the fluffy layer can provide a liquid guide channel for liquid, so that liquid points can be quickly diffused on the composite core along the liquid guide channel, the dispersion area of the liquid on the composite core is increased, the composite core can quickly and effectively absorb the liquid, the comfort and the dryness of the sanitary product are greatly improved, and the utilization rate of the composite core is also greatly improved.
Preferably, the fluffy layer is made by mixing hollow fibers and short fibers; the weight ratio of the hollow fibers to the short fibers is 1 (4.5-5).
Preferably, the short fibers include 2D composite short fibers, 4D composite short fibers and 6D composite short fibers; the weight ratio of the 2D composite short fibers to the 4D composite short fibers to the 6D composite short fibers is 1 (1.5-2.5) to 1.
Preferably, the hollow fibers and the short fibers both comprise polyethylene fibers and polypropylene fibers in a weight ratio of 1 (0.5-1.5).
Preferably, the upper coating layer and the lower coating layer are both spun-bonded non-woven fabrics or spunlace non-woven fabrics or dust-free paper; the gram weight of the spun-bonded non-woven fabric is 18-35g per square meter; the spunlace nonwoven fabric contains 25-40% of viscose fibers, and the gram weight is 28-40 g per square meter; the gram weight of the dust-free paper is 35-50 g/square meter.
Preferably, the density of the super absorbent resin particles is 0.3 to 0.9g/cm3。
Preferably, the distance between the lowest points of the adjacent concave positions of the fluffy layer is 5-15 mm.
A method of making a corrugated absorbent composite core comprising the steps of:
step one, setting the temperature of a corrugated pressing roller, and heating and forming the fluffy layer into a corrugated structure through the corrugated pressing roller;
step two, in the conveying process of the fluffy layer with the corrugated structure, the super absorbent resin particles in the first high polymer groove above the fluffy layer fall to the concave position on the upper surface of the fluffy layer;
and step three, in the conveying process of the lower coating layer, the super absorbent resin particles in the second polymer tank above the lower coating layer fall to the region position of the lower coating layer, and the distance between the adjacent region positions of the lower coating layer is the same as the distance between the adjacent concave positions of the lower surface of the fluffy layer.
And step four, compounding the upper coating layer, the fluffy layer and the lower coating layer through a compound press roller according to the sequence from top to bottom to obtain the corrugated composite absorption core, wherein the super absorbent resin particles at the region position of the lower coating layer in the corrugated composite absorption core are positioned at the concave position of the lower surface of the fluffy layer.
Preferably, the temperature of the corrugated press roll in the first step is set to be 85-140 ℃.
Preferably, in the fourth step, the upper coating layer, the fluffy layer and the lower coating layer are compounded through hollow glue spraying or full glue spraying, and the glue spraying distribution density of the hollow glue spraying or full glue spraying operation is 2-5 g/square meter.
Compared with the prior art, the invention has the beneficial effects that:
1) the fluffy layer is arranged in a corrugated shape, so that the dispersion area of the super absorbent resin particles in the fluffy layer is enlarged, and the liquid absorption capacity of the absorption composite core body can be further improved to a great extent;
2) the corrugated structure of the fluffy layer can provide a liquid guide channel for liquid, so that liquid points can be quickly diffused on the composite core along the liquid guide channel, the dispersion area of the liquid on the composite core is increased, the composite core can quickly and effectively absorb the liquid, the comfort and the dryness of the sanitary ware during use are greatly improved, and the utilization rate of the composite core is also greatly improved;
3) the manufacturing method of the corrugated absorption composite core is simple to operate, after the fluffy layer is subjected to the heated corrugated pressing roller, the low-melting-point fibers in the fluffy layer can be melted, so that the fluffy layer can be quickly extruded into a corrugated shape after passing through the corrugated pressing roller, and the stability of a corrugated structure formed by the fluffy layer is higher;
4) in the preparation process of the corrugated absorption composite core body, the super absorbent resin particle glue can be adhered to the groove positions of the upper surface and the lower surface of the fluffy layer without turning the fluffy layer, so that the preparation process is greatly simplified, and the processing efficiency of the absorption composite core body is improved.
Drawings
FIG. 1 is a schematic structural view of a corrugated absorbent composite core of the present invention;
FIG. 2 is a side view of a corrugated absorbent composite core of the present invention;
fig. 3 is a process flow diagram of a method of making a corrugated absorbent composite core in accordance with the present invention.
In the drawings: 1-coating layer; 2-a fluffy layer; 3-lower coating layer; 4-superabsorbent resin particles; 5-corrugating press rolls; 6-composite compression roller; 71-a first macromolecule tank; 72-second polymer tank.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for convenience of description and simplicity of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:
example 1
Fig. 1-2 show an embodiment of a corrugated absorbent composite core, which comprises an upper covering layer 1, a bulky layer 2, a lower covering layer 3 and super absorbent resin particles 4, wherein the upper covering layer 1, the bulky layer 2 and the lower covering layer 3 are sequentially glued and compounded from top to bottom.
Wherein the upper coating layer 1 is selected from spun-bonded non-woven fabrics or spunlace non-woven fabrics or dust-free paper, if the upper coating layer 1 is selected from spun-bonded non-woven fabrics, the gram weight of the spun-bonded non-woven fabrics is 18-35 g/square meter; if the upper coating layer 1 is made of spunlace non-woven fabrics, the spunlace non-woven fabrics contain 25-40% of viscose fibers, and the gram weight of the spunlace non-woven fabrics is 28-40 g per square meter; if the upper coating layer 1 is made of dust-free paper, the gram weight of the dust-free paper is 35-50 g per square meter; in this embodiment, the upper coating layer 1 is a spun-bonded non-woven fabric with a weight of 35 g/square meter.
The fluffy layer 2 is at least provided with one layer, the fluffy layer 2 is provided with two layers in the embodiment, the fluffy layer 2 is prepared by mixing hollow fibers and short fibers, the weight ratio of the hollow fibers to the short fibers is 1: 4.5-5, the short fibers comprise 2D composite short fibers, 4D composite short fibers and 6D composite short fibers, the weight ratio of the 2D composite short fibers, the 4D composite short fibers and the 6D composite short fibers is 1: 1.5-2.5: 1, the weight ratio of the hollow fibers in the fluffy layer in the embodiment is 16.7%, the weight ratio of the 2D composite short fibers is 20.8%, the weight ratio of the 4D composite short fibers is 41.7%, the weight ratio of the 6D composite short fibers is 20.8%, the hollow fibers and the short fibers comprise polyethylene fibers and polypropylene fibers, wherein the weight ratio of the polyethylene fibers to the polypropylene fibers is 1: 0.5-1.5, wherein the weight ratio of the polyethylene fiber to the polypropylene fiber in the embodiment is 1:1.
wherein fluffy layer 2 sets up to flute column structure, and the flute form can set up to triangle-shaped, also can set up to flute form or other shapes that have unsmooth undulation, and the flute form sets up to flute form in this embodiment, and the interval of fluffy layer 2's adjacent trough is 5mm ~ 15mm, and the interval of fluffy layer 2's adjacent trough is 10mm in this embodiment.
Wherein the super absorbent resin particles 4 are adhered to the concave positions of the upper and lower surfaces of the fluffy layer 2, the super absorbent resin particles 4 are high in infiltration speed, diffusion distance and liquid permeability, and the density of the super absorbent resin particles 4 is 0.3-0.9 g/cm3Wherein the preferred density is 0.5 to 0.8g/cm3In this example, the density of the super absorbent resin particles 4 was 0.6g/cm3。
Wherein, the lower coating layer 3 is selected from spun-bonded non-woven fabrics or spunlace non-woven fabrics or dust-free paper, if the lower coating layer 3 is selected from spun-bonded non-woven fabrics, the gram weight of the spun-bonded non-woven fabrics is 18-35 g/square meter; if the lower coating layer 3 is made of spunlace non-woven fabrics, the spunlace non-woven fabrics contain 25-40% of viscose fibers, and the gram weight of the spunlace non-woven fabrics is 28-40 g per square meter; if the lower coating layer 3 is made of dust-free paper, the gram weight of the dust-free paper is 35-50 g per square meter; in the embodiment, the lower coating layer 3 is a spun-bonded non-woven fabric with the weight of 35 g/square meter.
The fluffy layer 2 is corrugated, so that the dispersion area of the super absorbent resin particles 4 in the fluffy layer 2 is increased, the liquid absorption capacity of the absorption composite core can be greatly improved, in addition, the corrugated structure of the fluffy layer 2 can provide a liquid guide channel for liquid, so that liquid points can be quickly diffused on the composite core along the liquid guide channel, the dispersion area of the liquid on the composite core is increased, the composite core can quickly and effectively absorb the liquid, the comfort and the dryness of the sanitary product are greatly improved, and the utilization rate of the composite core is also greatly improved.
Example 2
Fig. 3 shows an embodiment of a method for manufacturing a corrugated absorbent composite core, which specifically comprises the following steps:
the first step is: conveying the fluffy layer 2 to pass through a corrugated press roll 5 to be heated and formed into a corrugated shape; wherein the weight ratio of the hollow fibers to the short fibers in the fluffy layer 2 is 1:4.5, and the weight ratio of the 2D composite short fibers, the 4D composite short fibers and the 6D composite short fibers in the short fibers is 1:1.5: 1; wherein the corrugated press roll 5 is a pair of press rolls with corrugated surfaces, the pair of press rolls are oppositely arranged and mutually meshed, the temperature of the corrugated press roll 5 is set to be 85 ℃, because the fluffy layer 2 contains polyethylene fibers, the temperature of the corrugated press roll 5 is higher than the melting point of the polyethylene fibers, when the fluffy layer 2 passes through the corrugated press roll 5, the polyethylene fibers can be melted, meanwhile, the fluffy layer 2 can be heated and formed into corrugated shapes under the extrusion action of the corrugated press roll 5, and the distance between the wave troughs of the finally formed corrugated fluffy layer 2 is 5mm in the embodiment;
the second step is: a first macromolecule groove 71 is arranged above the fluffy layer 2, the super absorbent resin particles 4 are placed in the first macromolecule groove 71, when the fluffy layer 2 is conveyed, the super absorbent resin particles 4 in the first macromolecule groove 71 fall to the concave position of the upper surface of the fluffy layer 2, and the density of the super absorbent resin particles 4 is 0.3g/cm3；
The third step is: a second polymer groove 72 is arranged above the lower coating layer 3 for conveying, superabsorbent resin particles 4 are placed in the second polymer groove 72, in the conveying process of the lower coating layer 3, the superabsorbent resin particles 4 in the second polymer groove 72 fall to the positions of the areas of the lower coating layer 3 with equal intervals, the interval between the adjacent areas on the lower coating layer 3 is the same as the interval between the adjacent concave positions on the lower surface of the fluffy layer 2, and the interval between the adjacent concave positions on the lower surface of the fluffy layer 2 is the interval between the adjacent valleys of the fluffy layer 2;
and fourthly, conveying the upper coating layer 1, the fluffy layer 2 and the lower coating layer 3 to a composite press roller 6 for compounding according to the sequence from top to bottom, wherein the super absorbent resin particles 4 at the upper region position of the lower coating layer 3 are positioned at the concave position of the lower surface of the fluffy layer 2 after compounding, the upper coating layer 1, the fluffy layer 2 and the lower coating layer 3 are compounded through hollowed-out glue spraying, the glue spraying distribution density of the hollowed-out glue spraying operation is 2 g/square meter, and the upper coating layer 1 and the lower coating layer 3 are spun-bonded non-woven fabrics of 30 g/square meter.
Example 3
Fig. 3 shows an embodiment of a method for manufacturing a corrugated absorbent composite core, which specifically comprises the following steps:
the first step is: conveying the fluffy layer 2 to pass through a corrugated press roll 5 to be heated and formed into a corrugated shape; wherein the weight ratio of the hollow fibers to the short fibers in the fluffy layer 2 is 1:4.9, and the weight ratio of the 2D composite short fibers, the 4D composite short fibers and the 6D composite short fibers in the short fibers is 1:2: 1; wherein the corrugated press roll 5 is a pair of press rolls with corrugated surfaces, the pair of press rolls are oppositely arranged and mutually meshed, the temperature of the corrugated press roll 5 is set to be 120 ℃, because the fluffy layer 2 contains polyethylene fibers, the temperature of the corrugated press roll 5 is higher than the melting point of the polyethylene fibers, when the fluffy layer 2 passes through the corrugated press roll 5, the polyethylene fibers can be melted, meanwhile, the fluffy layer 2 can be heated and formed into a corrugated shape under the extrusion action of the corrugated press roll 5, and the distance between the wave troughs of the finally formed corrugated fluffy layer 2 is 10mm in the embodiment;
the second step is: a first macromolecule groove 71 is arranged above the fluffy layer 2, the super absorbent resin particles 4 are placed in the first macromolecule groove 71, when the fluffy layer 2 is conveyed, the super absorbent resin particles 4 in the first macromolecule groove 71 fall to the concave position of the upper surface of the fluffy layer 2, and the density of the super absorbent resin particles 4 is 0.6g/cm3；
The third step is: a second polymer groove 72 is arranged above the lower coating layer 3 for conveying, superabsorbent resin particles 4 are placed in the second polymer groove 72, in the conveying process of the lower coating layer 3, the superabsorbent resin particles 4 in the second polymer groove 72 fall to the positions of the areas of the lower coating layer 3 with equal intervals, the interval between the adjacent areas on the lower coating layer 3 is the same as the interval between the adjacent concave positions on the lower surface of the fluffy layer 2, and the interval between the adjacent concave positions on the lower surface of the fluffy layer 2 is the interval between the adjacent valleys of the fluffy layer 2;
and fourthly, conveying the upper coating layer 1, the fluffy layer 2 and the lower coating layer 3 to a composite press roller 6 for compounding according to the sequence from top to bottom, wherein the super absorbent resin particles 4 on the lower coating layer 3 are positioned at the concave position of the lower surface of the fluffy layer 2 after compounding, the upper coating layer 1, the fluffy layer 2 and the lower coating layer 3 are compounded through hollowed-out glue spraying, the glue spraying distribution density of the full glue spraying operation is 3.5 g/square meter, and the upper coating layer 1 and the lower coating layer 3 are both selected from spunlace non-woven fabrics containing 40% of viscose fibers and having the gram weight of 28 g/square meter.
Example 4
Fig. 3 shows an embodiment of a method for manufacturing a corrugated absorbent composite core, which specifically comprises the following steps:
the first step is: conveying the fluffy layer 2 to pass through a corrugated press roll 5 to be heated and formed into a corrugated shape; wherein the weight ratio of the hollow fibers to the short fibers in the fluffy layer 2 is 1:5, and the weight ratio of the 2D composite short fibers, the 4D composite short fibers and the 6D composite short fibers in the short fibers is 1:2.5: 1; wherein the corrugated press roll 5 is a pair of press rolls with corrugated surfaces, the pair of press rolls are oppositely arranged and mutually meshed, the temperature of the corrugated press roll 5 is set to be 140 ℃, because the fluffy layer 2 contains polyethylene fibers, the temperature of the corrugated press roll 5 is higher than the melting point of the polyethylene fibers, when the fluffy layer 2 passes through the corrugated press roll 5, the polyethylene fibers can be melted, meanwhile, the fluffy layer 2 can be heated and formed into corrugated shapes under the extrusion action of the corrugated press roll 5, and the distance between the wave troughs of the finally formed corrugated fluffy layer 2 is 15mm in the embodiment;
the second step is: a first macromolecule groove 71 is arranged above the fluffy layer 2, the super absorbent resin particles 4 are placed in the first macromolecule groove 71, when the fluffy layer 2 is conveyed, the super absorbent resin particles 4 in the first macromolecule groove 71 fall to the concave position of the upper surface of the fluffy layer 2, and the density of the super absorbent resin particles 4 is 0.9g/cm3；
The third step is: a second polymer groove 72 is arranged above the lower coating layer 3 for conveying, superabsorbent resin particles 4 are placed in the second polymer groove 72, in the conveying process of the lower coating layer 3, the superabsorbent resin particles 4 in the second polymer groove 72 fall to the positions of the areas of the lower coating layer 3 with equal intervals, the interval between the adjacent areas on the lower coating layer 3 is the same as the interval between the adjacent concave positions on the lower surface of the fluffy layer 2, and the interval between the adjacent concave positions on the lower surface of the fluffy layer 2 is the interval between the adjacent valleys of the fluffy layer 2;
and step four, conveying the upper coating layer 1, the fluffy layer 2 and the lower coating layer 3 to a composite press roller 6 for compounding according to the sequence from top to bottom, wherein the high water-absorbent resin particles 4 on the lower coating layer 3 are positioned at the concave positions of the lower surface of the fluffy layer 2 after compounding, the upper coating layer 1, the fluffy layer 2 and the lower coating layer 3 are compounded through hollowed-out glue spraying, the glue spraying distribution density of the full glue spraying operation is 5 g/square meter, and the upper coating layer 1 and the lower coating layer 3 are both made of dust-free paper with the grammage of 35 g/square meter.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A corrugated absorption composite core body comprises an upper coating layer (1), a fluffy layer (2) and a lower coating layer (3) which are arranged from top to bottom in sequence; the method is characterized in that: the fluffy layer (2) is corrugated, and the concave positions of the upper surface and the lower surface of the fluffy layer (2) are provided with super absorbent resin particles (4).
2. A corrugated absorbent composite core as defined in claim 1 wherein: the fluffy layer (2) is prepared by mixing hollow fibers and short fibers; the weight ratio of the hollow fibers to the short fibers is 1 (4.5-5).
3. A corrugated absorbent composite core as defined in claim 2 wherein: the short fibers comprise 2D composite short fibers, 4D composite short fibers and 6D composite short fibers; the weight ratio of the 2D composite short fibers to the 4D composite short fibers to the 6D composite short fibers is 1 (1.5-2.5) to 1.
4. A corrugated absorbent composite core according to claims 2-3 wherein: the hollow fibers and the short fibers both comprise polyethylene fibers and polypropylene fibers in a weight ratio of 1 (0.5-1.5).
5. A corrugated absorbent composite core as defined in claim 1 wherein: the upper coating layer (1) and the lower coating layer (3) are both spun-bonded non-woven fabrics or spunlace non-woven fabrics or dust-free paper; the gram weight of the spun-bonded non-woven fabric is 18-35g per square meter; the spunlace nonwoven fabric contains 25-40% of viscose fibers, and the gram weight is 28-40 g per square meter; the gram weight of the dust-free paper is 35-50 g/square meter.
6. A corrugated absorbent composite core as defined in claim 1 wherein: the density of the super absorbent resin particles (4) is 0.3 to 0.9g/cm3。
7. A corrugated absorbent composite core as defined in claim 1 wherein: the distance between the lowest points of the adjacent concave positions of the fluffy layer (2) is 5-15 mm.
8. A method of making a corrugated absorbent composite core as claimed in any one of claims 1 to 7 wherein: the method comprises the following steps:
step one, setting the temperature of a corrugated pressing roller (5), and heating and molding the fluffy layer (2) into a corrugated structure through the corrugated pressing roller (5);
step two, in the conveying process of the fluffy layer (2) with the corrugated structure, the super absorbent resin particles (4) in the first macromolecule groove (71) above the fluffy layer fall to the concave position on the upper surface of the fluffy layer (2);
and step three, in the conveying process of the lower coating layer (3), the super absorbent resin particles (4) in the second polymer groove (72) above the lower coating layer fall to the position of the area of the lower coating layer (3), and the distance between the positions of the areas adjacent to the lower coating layer (3) is the same as the distance between the concave positions of the lower surface adjacent to the fluffy layer (2).
And step four, compounding the upper coating layer (1), the fluffy layer (2) and the lower coating layer (3) through a compound press roller (6) in sequence from top to bottom to obtain the corrugated composite absorption core, wherein the super absorbent resin particles (4) at the area position of the lower coating layer (3) in the corrugated composite absorption core are positioned at the sunken position of the lower surface of the fluffy layer (2).
9. A method of making a corrugated absorbent composite core as claimed in claim 8, wherein: the temperature of the corrugated pressing roller (5) in the first step is set to be 85-140 ℃.
10. A method of making a corrugated absorbent composite core as claimed in claim 8, wherein: in the fourth step, the upper coating layer (1), the fluffy layer (2) and the lower coating layer (3) are compounded through hollowed-out glue spraying or full glue spraying, and the glue spraying distribution density of the hollowed-out glue spraying or full glue spraying operation is 2-5 g/square meter.
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