CN111249069A - Glue-free reverse-absorption water-absorbing core and preparation process thereof - Google Patents
Glue-free reverse-absorption water-absorbing core and preparation process thereof Download PDFInfo
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- CN111249069A CN111249069A CN202010132573.5A CN202010132573A CN111249069A CN 111249069 A CN111249069 A CN 111249069A CN 202010132573 A CN202010132573 A CN 202010132573A CN 111249069 A CN111249069 A CN 111249069A
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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
- A61F13/15617—Making absorbent pads from fibres or pulverulent material with or without treatment of the fibres
- A61F13/15658—Forming continuous, e.g. composite, fibrous webs, e.g. involving the application of pulverulent material on parts thereof
-
- 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
- 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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- 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
- 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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- 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
- A61F2013/15821—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
- A61F2013/15861—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for bonding
- A61F2013/15878—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for bonding by thermal bonding
-
- 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
- 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
- A61F2013/530379—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 comprising mixtures of fibres
- A61F2013/530386—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 comprising mixtures of fibres with pulp and polymeric
-
- 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
- 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
-
- 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
- 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
- A61F2013/530708—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 characterized by the absorbency properties
- A61F2013/530715—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 characterized by the absorbency properties by the acquisition rate
-
- 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
- A61F13/539—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 characterised by the connection of the absorbent layers with each other or with the outer layers
- A61F2013/5395—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 characterised by the connection of the absorbent layers with each other or with the outer layers with thermoplastic agent, i.e. softened by heat
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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)
- Absorbent Articles And Supports Therefor (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention relates to a glue-free reverse-absorption water-absorbing core body and a preparation process thereof. The ES chemical fiber layer and the slurry ES chemical fiber mixing layer can be formed into a forming body without an adhesive through heat treatment, and compared with the condition of bonding by using an adhesive, the liquid infiltration speed is high, so that the dryness of the upper layer is ensured to the maximum extent, and the manufacturing is more environment-friendly and sanitary.
Description
Technical Field
The invention belongs to the technical field of hygienic products, and particularly relates to a glue-free reverse-absorption water-absorbing core body and a preparation process thereof.
Background
The water absorption core body has wide application, at present, the sanitary articles sold on the market, such as the water absorption core body of a sanitary towel or a paper diaper, are usually composed of fluff pulp or non-woven fabrics, in order to improve the absorption performance of the water absorption core body, people develop and add a high polymer water absorption layer in the water absorption core body, because the water absorption core body is very compact, the absorption of liquid and the diffusion of liquid are very slow, if the liquid can not be absorbed in a short time, discomfort and trouble can be brought to a user, and the requirement that the user needs the water absorption core body to absorb a large amount of liquid in a short time can not be met.
Chinese patent CN209392255U discloses a water-absorbing core body of a sanitary product, which comprises an upper layer non-woven fabric, a middle layer non-woven fabric and a lower layer dust-free paper, wherein the upper layer non-woven fabric is bonded with the middle layer non-woven fabric through a bonding agent, and the middle layer non-woven fabric is bonded with the lower layer dust-free paper through the bonding agent; the upper part of the middle-layer non-woven fabric is permeated with first macromolecular water-absorbent resin, the lower part of the middle-layer non-woven fabric is permeated with second macromolecular water-absorbent resin, the particle size of the first macromolecular water-absorbent resin is larger than that of the second macromolecular water-absorbent resin, and the water absorption performance of the first macromolecular water-absorbent resin is weaker than that of the second macromolecular water-absorbent resin.
In the above-mentioned public health supplies absorbent core body, the binder bonds between upper non-woven fabrics, intermediate level non-woven fabrics and the dustless paper of lower floor, can form a rete after the binder is dried to block that moisture from infiltrating down, lead to the infiltration speed slow, moisture stays on upper non-woven fabrics surface, and the influence skin is healthy.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides the glue-free reverse absorption water absorption core body and the preparation process thereof, which have the advantages of good permeation effect and high water absorption efficiency, keep the skin surface dry and comfortable, and greatly reduce the problems of red butt, allergy, microorganism breeding and the like.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention relates to a glue-free reverse-absorption water-absorbing core body which comprises an upper ES chemical fiber layer, a middle high-molecular water-absorbing resin layer and a lower wood pulp ES chemical fiber mixing layer, wherein the middle high-molecular water-absorbing resin layer is wrapped in the middle of the upper ES chemical fiber layer and the lower wood pulp ES chemical fiber mixing layer, and the upper ES chemical fiber layer and the lower wood pulp ES chemical fiber mixing layer are formed into an integrated structure through heat treatment.
Preferably, the particle size of the high molecular water-absorbing resin in the middle high molecular water-absorbing resin layer is 100-300 mesh.
Preferably, the gram weight of the upper ES chemical fiber layer is 20-60 g/m2The gram weight of the lower wood pulp ES chemical fiber mixed layer is 50-200 g/m2The amount of the polymeric water-absorbing resin in the intermediate polymeric water-absorbing resin layer is 100-400 g/m2。
Preferably, the thickness of the lower wood pulp ES chemical fiber mixed layer is larger than that of the upper ES chemical fiber layer.
Preferably, the high-molecular water-absorbent resin layer comprises first high-molecular water-absorbent resin and second high-molecular water-absorbent resin, the first high-molecular water-absorbent resin permeates the lower surface of the upper ES chemical fiber layer, and the second high-molecular water-absorbent resin permeates the upper surface of the lower wood pulp ES chemical fiber mixed layer.
Preferably, the particle size of the first high-molecular water-absorbent resin is 120-300 mesh, and the particle size of the second high-molecular water-absorbent resin is 100-120 mesh; the water absorption multiplying power of the first high-molecular water-absorbent resin is 50-180 times, and the water absorption multiplying power of the second high-molecular water-absorbent resin is 110-260 times; the dosage of the first high-molecular water-absorbing resin is 50-200 g/m2The dosage of the second high polymer water-absorbing resin is 50-200 g/m2。
A preparation process of a glue-free reverse-absorption water-absorption core body comprises the following steps:
(1) laying the wood pulp ES chemical fiber mixing layer on a workbench, wherein an exhaust fan and a vibrator are arranged below the wood pulp ES chemical fiber mixing layer, and macromolecular water-absorbent resin is uniformly sprayed on the upper side surface of the wood pulp ES chemical fiber mixing layer;
(2) under the action of an exhaust fan and a vibrator, the high-molecular water-absorbent resin permeates into the wood pulp ES chemical fiber mixed layer;
(3) under the action of an exhaust fan, laying the ES chemical fiber layer above the wood pulp ES chemical fiber mixing layer;
(4) heating to make the ES fibers on the ES chemical fiber layer and the wood pulp ES chemical fiber mixed layer mutually connected to form a forming body, cooling, rolling and cutting to obtain the glue-free reverse absorption water absorption core body.
Preferably, in the step (4), the temperature of the heating treatment is 100 to 150 ℃.
A preparation process of a glue-free reverse-absorption water-absorption core body comprises the following steps:
(1) laying an ES chemical fiber layer and a wood pulp ES chemical fiber mixing layer on a workbench, wherein an exhaust fan and a vibrator are arranged below the ES chemical fiber layer and the wood pulp ES chemical fiber mixing layer, first high-molecular water-absorbent resin is uniformly sprayed on the upper side surface of the ES chemical fiber layer, and second high-molecular water-absorbent resin is uniformly sprayed on the upper side surface of the wood pulp ES chemical fiber mixing layer;
(2) under the action of an exhaust fan and a vibrator, the first high-molecular water-absorbent resin permeates into the ES chemical fiber layer, and the second high-molecular water-absorbent resin permeates into the wood pulp ES chemical fiber mixed layer;
(3) turning the upper side of the ES chemical fiber layer downwards, and paving the ES chemical fiber layer above the wood pulp ES chemical fiber mixing layer under the action of an exhaust fan;
(4) heating to make the ES fibers on the ES chemical fiber layer and the wood pulp ES chemical fiber mixed layer mutually connected to form a forming body, cooling, rolling and cutting to obtain the glue-free reverse absorption water absorption core body.
Preferably, in the step (4), the temperature of the heating treatment is 100 to 150 ℃.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
1. the ES chemical fiber layer and the slurry ES chemical fiber mixing layer can be formed into a forming body without an adhesive through heat treatment, and compared with the condition of bonding by using an adhesive, the liquid infiltration speed is high, so that the dryness of the upper layer is ensured to the maximum extent, and the manufacturing is more environment-friendly and sanitary.
2. Because the middle of the invention does not adopt a binder, the liquid can quickly seep from the ES chemical fiber layer to the lower wood pulp ES chemical fiber mixed layer, and the liquid is absorbed by the middle polymer water-absorbing resin layer in the seeping process; the diffusion effect always exists in the liquid permeation process, the liquid completely diffuses after reaching the wood pulp ES chemical fiber mixing layer at the lower layer, and the liquid permeating into the wood pulp ES chemical fiber mixing layer can reversely permeate into the middle high polymer water absorption resin layer from the two ends of the water absorption core body, so that the water can be quickly absorbed, and the absorption efficiency of the water absorption core body is improved.
3. The present invention adopts the high molecular water-absorbing resins with different particle sizes, the particle size of the upper high molecular water-absorbing resin is large, and the particle size of the lower high molecular water-absorbing resin is small, so that the gap between the upper high molecular water-absorbing resins is large, and the liquid can rapidly seep downwards. Meanwhile, as the macromolecular water-absorbent resin on the upper side is relatively weak, when liquid seeps downwards, the macromolecular water-absorbent resin on the upper part of the macromolecular water-absorbent resin is unlikely to expand rapidly to seal gaps among particles, so that the liquid seeps downwards conveniently, the ES chemical fiber layer on the upper layer is kept in a dry and comfortable state, and a human body can feel more comfortable when the ES chemical fiber layer is worn.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view in example 2;
FIG. 3 is a schematic view of the osmotic diffusion of water in the present invention;
fig. 4 is a schematic view showing the diffusion of the test solution on the surface of the water-absorbent core in the comparative example.
Description of the labels in the schematic:
1-ES chemical fiber layer; 2-a high-molecular water-absorbent resin layer; 3-wood pulp ES chemical fiber mixed layer; 21-first high molecular water-absorbent resin; 22-second high molecular water absorption resin.
Detailed Description
For further understanding of the present invention, the present invention will be described in detail with reference to examples, which are provided for illustration of the present invention but are not intended to limit the scope of the present invention.
Example 1
As shown in fig. 1, the present embodiment relates to a non-glue reverse absorption absorbent core, which comprises an upper ES chemical fiber layer 1, a middle polymer absorbent resin layer 2 and a lower wood pulp ES chemical fiber mixed layer 3, wherein the upper ES chemical fiber layer 1 and the lower wood pulp ES chemical fiber mixed layer 3 wrap the middle polymer absorbent resin layer 2 in the middle, and the upper ES chemical fiber layer 1 and the lower wood pulp ES chemical fiber mixed layer 3 are formed into an integrated structure through heat treatment.
The lower layer wood pulp EThe thickness of the S chemical fiber mixing layer 3 is larger than that of the upper ES chemical fiber layer 1. The particle size of the high polymer water-absorbing resin in the middle high polymer water-absorbing resin layer 2 is 100 mesh. The gram weight of the upper ES chemical fiber layer 1 is 30g/m2The gram weight of the lower wood pulp ES chemical fiber mixed layer 3 is 90g/m2The amount of the high-molecular water-absorbent resin in the intermediate high-molecular water-absorbent resin layer 2 is 250g/m2。
The preparation process of the glue-free reverse-absorption water-absorption core body comprises the following steps:
(1) laying the wood pulp ES chemical fiber mixing layer on a workbench, wherein an exhaust fan and a vibrator are arranged below the wood pulp ES chemical fiber mixing layer, and macromolecular water-absorbent resin is uniformly sprayed on the upper side surface of the wood pulp ES chemical fiber mixing layer;
(2) under the action of an exhaust fan and a vibrator, the high-molecular water-absorbent resin permeates into the wood pulp ES chemical fiber mixed layer;
(3) under the action of an exhaust fan, laying the ES chemical fiber layer above the wood pulp ES chemical fiber mixing layer;
(4) heating to make the ES fibers on the ES chemical fiber layer and the wood pulp ES chemical fiber mixed layer mutually connected to form a forming body, cooling, rolling and cutting to obtain the glue-free reverse absorption water absorption core body.
In the step (4), the temperature of the heat treatment was 120 ℃.
As shown in fig. 3, 80ml of test solution is poured over the middle of the upper ES chemical fiber layer 1 of the water-absorbent core with no gel reverse absorption, the test solution can rapidly permeate downwards and diffuse around, most of the upper ES chemical fiber layer 1 can be kept dry, the test solution is absorbed by the middle high polymer water-absorbent resin layer 2, and the test solution permeating into the lower wood pulp ES chemical fiber mixed layer 3 starts to reversely permeate into the middle high polymer water-absorbent resin layer 2 to be absorbed.
According to the method for measuring the slip amount in the paper diaper (sheet and pad) of the national standard GB/T28004-2011 of the people's republic of China, the adhesive-free reverse absorption water absorption core is made into the paper diaper for babies as a sample, the sample is placed on an inclined plate with the inclination of (30 +/-2) DEG, the using surface is upward, 100mm is respectively taken from two ends of the central point of the adhesive-free reverse absorption water absorption core in the sample as a test area, 50ml of test solution is measured, the test solution is made to flow along the inclined plane, and the slip amount is finally measured to be 11.6ml and is lower than 20ml of the national standard through a plurality of experiments.
According to the method for measuring the back seepage amount in the paper diaper (sheet or pad) of the national standard GB/T28004-2011 of the people's republic of China, the glue-free reverse absorption water absorption core is made into a medium-sized baby diaper as a sample, 60ml of test solution freely flows to the surface of the center of the sample through a funnel, the same amount of test solution is injected again through the funnel after 5 minutes, a plurality of layers of filter paper with the diameter of 100mm are placed on the surface of the sample after 10 minutes, meanwhile, a standard pressing block is pressed on the filter paper, the standard pressing block is removed after 1 minute of pressing, the test is carried out for a plurality of times in the measuring mode, and finally, the average back seepage amount of the sample is measured to be 5.7g and is 10g lower than the national standard.
According to the method for measuring the leakage amount in the paper diaper (sheet or pad) of the national standard GB/T28004-2011 of the people's republic of China, the adhesive-free reversely-absorbed water absorbent core is prepared into the adult paper diaper as a sample, the sample is flatly laid on a horizontal table, 80ml of test solution is measured by a separating funnel, the test solution is poured into the center of the sample at a constant speed within 30 seconds, and after 5 minutes, no liquid leakage around the sample is observed.
Example 2
As shown in fig. 2, the present embodiment relates to a non-glue reverse absorption absorbent core, which comprises an upper ES chemical fiber layer 1, a middle polymer absorbent resin layer 2 and a lower wood pulp ES chemical fiber mixed layer 3, wherein the upper ES chemical fiber layer 1 and the lower wood pulp ES chemical fiber mixed layer 3 wrap the middle polymer absorbent resin layer 2 in the middle, and the upper ES chemical fiber layer 1 and the lower wood pulp ES chemical fiber mixed layer 3 are formed into an integrated structure through heat treatment.
The thickness of the lower wood pulp ES chemical fiber mixed layer 3 is larger than that of the upper ES chemical fiber layer 1. The gram weight of the upper ES chemical fiber layer 1 is 30g/m2The gram weight of the lower wood pulp ES chemical fiber mixed layer 3 is 90g/m2。
The high-molecular water-absorbent resin layer 2 comprises first high-molecular water-absorbent resin 21 and second high-molecular water-absorbent resin 22, the first high-molecular water-absorbent resin 21 permeates the lower surface of the upper ES chemical fiber layer 1, and the second high-molecular water-absorbent resin 22 permeates the upper surface of the lower wood pulp ES chemical fiber mixed layer 3.
The particle size of the first high-molecular water-absorbent resin 21 is 200mesh, and the particle size of the second high-molecular water-absorbent resin is 100 mesh; the water absorption multiplying power of the first high-molecular water-absorbent resin is 100 times, and the water absorption multiplying power of the second high-molecular water-absorbent resin is 200 times; the dosage of the first high molecular water-absorbing resin is 100g/m2The dosage of the second high molecular water-absorbing resin is 100g/m2。
The preparation process of the non-glue reverse absorption water absorption core body comprises the following steps:
(1) laying an ES chemical fiber layer and a wood pulp ES chemical fiber mixing layer on a workbench, wherein an exhaust fan and a vibrator are arranged below the ES chemical fiber layer and the wood pulp ES chemical fiber mixing layer, first high-molecular water-absorbent resin is uniformly sprayed on the upper side surface of the ES chemical fiber layer, and second high-molecular water-absorbent resin is uniformly sprayed on the upper side surface of the wood pulp ES chemical fiber mixing layer;
(2) under the action of an exhaust fan and a vibrator, the first high-molecular water-absorbent resin permeates into the ES chemical fiber layer, and the second high-molecular water-absorbent resin permeates into the wood pulp ES chemical fiber mixed layer;
(3) turning the upper side of the ES chemical fiber layer downwards, and paving the ES chemical fiber layer above the wood pulp ES chemical fiber mixing layer under the action of an exhaust fan;
(4) heating to make the ES fibers on the ES chemical fiber layer and the wood pulp ES chemical fiber mixed layer mutually connected to form a forming body, cooling, rolling and cutting to obtain the glue-free reverse absorption water absorption core body.
In the step (4), the temperature of the heat treatment was 120 ℃.
As shown in fig. 3, 80ml of test solution is poured over the middle of the upper ES chemical fiber layer 1 of the water-absorbent core with no gel reverse absorption, the test solution can rapidly permeate downwards and diffuse around, most of the upper ES chemical fiber layer 1 can be kept dry, the test solution is absorbed by the middle high polymer water-absorbent resin layer 2, and the test solution permeating into the lower wood pulp ES chemical fiber mixed layer 3 starts to reversely permeate into the middle high polymer water-absorbent resin layer 2 to be absorbed.
According to the method for measuring the slip amount in the paper diaper (sheet and pad) of the national standard GB/T28004-2011 of the people's republic of China, the adhesive-free reverse absorption water absorption core is made into the paper diaper for babies as a sample, the sample is placed on an inclined plate with the inclination of (30 +/-2) DEG, the using surface is upward, 100mm is respectively taken from two ends of the central point of the adhesive-free reverse absorption water absorption core in the sample as a test area, 50ml of test solution is measured, the test solution is made to flow along the inclined plane, and the slip amount is finally measured to be 9.7ml and is lower than 20ml of the national standard through a plurality of experiments.
According to the method for measuring the back seepage amount in the paper diaper (sheet or pad) of the national standard GB/T28004-2011 of the people's republic of China, the glue-free reverse absorption water absorption core is made into a medium-sized baby diaper as a sample, 60ml of test solution freely flows to the surface of the center of the sample through a funnel, the same amount of test solution is injected again through the funnel after 5 minutes, a plurality of layers of filter paper with the diameter of 100mm are placed on the surface of the sample after 10 minutes, meanwhile, a standard pressing block is pressed on the filter paper, the standard pressing block is removed after 1 minute of pressing, the test is carried out for a plurality of times in the measuring mode, and finally, the average back seepage amount of the sample is measured to be 4.9g and is 10g lower than the national standard.
According to the method for measuring the leakage amount in the paper diaper (sheet or pad) of the national standard GB/T28004-2011 of the people's republic of China, the adhesive-free reversely-absorbed water absorbent core is prepared into the adult paper diaper as a sample, the sample is flatly laid on a horizontal table, 80ml of test solution is measured by a separating funnel, the test solution is poured into the center of the sample at a constant speed within 30 seconds, and after 5 minutes, no liquid leakage around the sample is observed.
Comparative example 1
In the comparative example 1, the upper ES chemical fiber layer in the example 1 is replaced by a wood pulp fiber layer, and the wood pulp fiber layer, the middle high polymer water-absorbent resin layer and the lower ES chemical fiber mixed layer are bonded together through hot melt adhesive to form the water-absorbent core body in the comparative example 1, wherein the thickness of the water-absorbent core body is the same as that of the water-absorbent core body in the example 1.
The water-absorbent cores of comparative example 1 and the non-gel reverse-absorbent cores of example 1, both having dimensions of 16 x 16cm, were used as test objects. As shown in fig. 4, 80ml of the test solution was poured at an even rate over 30 seconds under the same conditions above the center points of the water-absorbent core of comparative example 1 and the non-gel reverse-absorbent core placed horizontally, and the spreading of the test solution on the upper surface (i.e., upper layer) of the water-absorbent core of comparative example 1 and the non-gel reverse-absorbent core was observed. In the absorbent core of comparative example 1, the liquid was slowly drained after pouring the test solution, and most of the liquid was diffused outward, and the test solution was not poured yet at 15 th, i.e., completely diffused to a position 8cm from the center point of the upper surface (i.e., the edge of the core). In the water-absorbing core body without the adhesive reverse absorption, after the test solution is poured, the liquid quickly seeps downwards, the liquid at the upper layer is only diffused to the position of 3.6cm away from the central point of the upper surface at the 30 th s and basically keeps not to be diffused outwards, other positions on the upper surface of the core body keep dry, and the liquid is basically absorbed by the middle layer and the lower layer.
Comparative example 2
In the comparative example 2, the water-absorbing core material with the same structure in the example 1, the upper ES chemical fiber layer, the middle high polymer water-absorbing resin layer and the lower wood pulp ES chemical fiber mixed layer are bonded by hot melt adhesive to form the water-absorbing core with the same thickness as that in the example 1.
The water-absorbent cores of comparative example 2 and the non-gel reverse-absorbent cores of example 1, both having dimensions of 16 x 16cm, were used as test objects. As shown in FIG. 4, 80ml of the test solution was poured at an even rate over 30 seconds under the same conditions above the center points of the horizontally disposed absorbent core of example 2 and the non-gel reverse-absorbent core, and the spreading of the test solution on the upper surface (i.e., upper layer) of the absorbent core of comparative example 2 and the non-gel reverse-absorbent core was observed. In the absorbent core of comparative example 2, the liquid was slowly drained after pouring the test solution, and most of the liquid was diffused outward, and the test solution was not poured yet at 15 th, i.e., the liquid was completely diffused to a position 8cm from the center point of the upper surface (i.e., the edge of the core). In the water-absorbing core body without the adhesive reverse absorption, after the test solution is poured, the liquid quickly seeps downwards, only diffuses to the position 3.6cm away from the central point of the upper surface at the 30 th s, the liquid basically keeps on the upper surface and does not diffuse outwards, other positions on the upper surface of the core body keep dry, and the liquid is basically absorbed by the middle layer and the lower layer.
Combining comparative example 1 and comparative example 2, it is demonstrated that the test solution in the non-gel reverse-absorbent core of the present invention has a fast infiltration rate and a slow surface diffusion rate in the absorbent core. Indicating that the ES chemical fiber layer had a faster infiltration effect than the wood pulp fiber layer, and also that the binder used for bonding had a greater effect on the infiltration of the test solution.
The present invention and its embodiments have been described above schematically, without limitation, and the embodiments of the present invention are shown in the drawings, and the actual structures are not limited thereto. Therefore, those skilled in the art should understand that they can easily and effectively design and modify the structure and embodiments of the present invention without departing from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a no gluey reverse absorption's absorbent core body, its characterized in that, it includes upper ES chemical fiber layer, middle polymer absorbent resin layer and lower floor's wood pulp ES chemical fiber mixed layer, upper ES chemical fiber layer and lower floor's wood pulp ES chemical fiber mixed layer wrap up middle polymer absorbent resin layer in the centre, through the thermal treatment shaping formula structure as an organic whole between upper ES chemical fiber layer and the lower floor's wood pulp ES chemical fiber mixed layer.
2. The non-glue reverse absorption water absorption core body as claimed in claim 1, wherein the particle size of the high molecular water absorption resin in the middle high molecular water absorption resin layer is 100-300 mesh.
3. The non-glue reverse absorption water absorbent core body according to claim 1, wherein the gram weight of the upper ES chemical fiber layer is 20-60 g/m2The gram weight of the lower wood pulp ES chemical fiber mixed layer is 50-200 g/m2The amount of the polymeric water-absorbing resin in the intermediate polymeric water-absorbing resin layer is 100-400 g/m2。
4. The glue-free reverse absorbent core as claimed in claim 1, wherein the thickness of said lower mixed ES chemical fiber layer is greater than that of said upper mixed ES chemical fiber layer.
5. The absorbent core of claim 1, wherein the polymeric absorbent resin layer comprises a first polymeric absorbent resin and a second polymeric absorbent resin, the first polymeric absorbent resin is impregnated into the lower surface of the upper ES chemical fiber layer, and the second polymeric absorbent resin is impregnated into the upper surface of the lower wood pulp ES chemical fiber mixed layer.
6. The non-glue reverse absorption water absorption core body as claimed in claim 5, wherein the particle size of the first high molecular water absorption resin is 120-300 mesh, and the particle size of the second high molecular water absorption resin is 100-120 mesh; the water absorption multiplying power of the first high-molecular water-absorbent resin is 50-180 times, and the water absorption multiplying power of the second high-molecular water-absorbent resin is 110-260 times; the dosage of the first high-molecular water-absorbing resin is 50-200 g/m2The dosage of the second high polymer water-absorbing resin is 50-200 g/m2。
7. A process for the preparation of a glue-free, reverse-absorbent core according to claim 1, characterized in that it comprises the following steps:
(1) laying the wood pulp ES chemical fiber mixing layer on a workbench, wherein an exhaust fan and a vibrator are arranged below the wood pulp ES chemical fiber mixing layer, and macromolecular water-absorbent resin is uniformly sprayed on the upper side surface of the wood pulp ES chemical fiber mixing layer;
(2) under the action of an exhaust fan and a vibrator, the high-molecular water-absorbent resin permeates into the wood pulp ES chemical fiber mixed layer;
(3) under the action of an exhaust fan, laying the ES chemical fiber layer above the wood pulp ES chemical fiber mixing layer;
(4) heating to make the ES fibers on the ES chemical fiber layer and the wood pulp ES chemical fiber mixed layer mutually connected to form a forming body, cooling, rolling and cutting to obtain the glue-free reverse absorption water absorption core body.
8. The process for preparing a non-gel reverse-absorption water-absorbent core according to claim 7, wherein the temperature of the heating treatment in the step (4) is 100 to 150 ℃.
9. A process for the preparation of a glue-free, reverse-absorbent core according to claim 5, characterized in that it comprises the following steps:
(1) laying an ES chemical fiber layer and a wood pulp ES chemical fiber mixing layer on a workbench, wherein an exhaust fan and a vibrator are arranged below the ES chemical fiber layer and the wood pulp ES chemical fiber mixing layer, first high-molecular water-absorbent resin is uniformly sprayed on the upper side surface of the ES chemical fiber layer, and second high-molecular water-absorbent resin is uniformly sprayed on the upper side surface of the wood pulp ES chemical fiber mixing layer;
(2) under the action of an exhaust fan and a vibrator, the first high-molecular water-absorbent resin permeates into the ES chemical fiber layer, and the second high-molecular water-absorbent resin permeates into the wood pulp ES chemical fiber mixed layer;
(3) turning the upper side of the ES chemical fiber layer downwards, and paving the ES chemical fiber layer above the wood pulp ES chemical fiber mixing layer under the action of an exhaust fan;
(4) heating to make the ES fibers on the ES chemical fiber layer and the wood pulp ES chemical fiber mixed layer mutually connected to form a forming body, cooling, rolling and cutting to obtain the glue-free reverse absorption water absorption core body.
10. The process for preparing a non-gel reverse-absorbent water-absorbent core according to claim 9, wherein the temperature of the heating treatment in the step (5) is 100 to 150 ℃.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113397823A (en) * | 2021-06-16 | 2021-09-17 | 浙江亿维护理用品有限公司 | Manufacturing equipment and process of sanitary nursing pad |
| CN113693823A (en) * | 2021-07-22 | 2021-11-26 | 朱冬艳 | Special sandwich layer production equipment for glue-free diaper |
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2020
- 2020-02-29 CN CN202010132573.5A patent/CN111249069A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113397823A (en) * | 2021-06-16 | 2021-09-17 | 浙江亿维护理用品有限公司 | Manufacturing equipment and process of sanitary nursing pad |
| CN113693823A (en) * | 2021-07-22 | 2021-11-26 | 朱冬艳 | Special sandwich layer production equipment for glue-free diaper |
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