CN111249069B - A glue-free reverse absorption water-absorbing core and its preparation process - Google Patents
A glue-free reverse absorption water-absorbing core and its preparation processInfo
- Publication number
- CN111249069B CN111249069B CN202010132573.5A CN202010132573A CN111249069B CN 111249069 B CN111249069 B CN 111249069B CN 202010132573 A CN202010132573 A CN 202010132573A CN 111249069 B CN111249069 B CN 111249069B
- Authority
- CN
- China
- Prior art keywords
- chemical fiber
- layer
- water
- high polymer
- polymer water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- 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 and a preparation process thereof, wherein the glue-free reverse absorption water-absorbing core comprises an upper ES chemical fiber layer, a middle high-molecular water-absorbing resin layer and a lower wood pulp ES chemical fiber mixed layer, the middle high-molecular water-absorbing resin layer is wrapped in the middle by the upper ES chemical fiber layer and the lower wood pulp ES chemical fiber mixed layer, and the upper ES chemical fiber layer and the lower wood pulp ES chemical fiber mixed layer are formed into an integrated structure through heat treatment. Compared with the bonding condition of adopting a bonding agent, the invention has the advantages that the liquid infiltration speed is high, the dryness of the upper layer is ensured to the greatest extent, and the manufacturing is more environment-friendly and sanitary.
Description
Technical Field
The invention belongs to the technical field of sanitary products, and particularly relates to a non-adhesive reverse absorption water absorption core and a preparation process thereof.
Background
The absorbent core is widely used, and at present, the absorbent core of sanitary articles such as sanitary napkins or paper diapers sold on the market is usually composed of fluff pulp or non-woven fabrics, in order to improve the absorption performance of the absorbent core, a macromolecule absorbent layer is added in the absorbent core, and as the absorbent core is very compact, the absorption of liquid and the diffusion of liquid are very slow, if the liquid cannot be absorbed in a short time, discomfort and trouble can be brought to a user, and the requirement that the user can absorb a large amount of liquid in a short time cannot be met.
Chinese patent CN209392255U discloses a water-absorbing core body of a sanitary article, the water-absorbing core body 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 an adhesive, the middle layer non-woven fabric is bonded with the lower layer dust-free paper through an adhesive, the upper part of the middle layer non-woven fabric is permeated with a first high polymer water-absorbing resin, the lower part of the middle layer non-woven fabric is permeated with a second high polymer water-absorbing resin, the particle size of the first high polymer water-absorbing resin is larger than that of the second high polymer water-absorbing resin, and the water-absorbing property of the first high polymer water-absorbing resin is weaker than that of the second high polymer water-absorbing resin.
In the disclosed sanitary article absorbent core, the upper non-woven fabric, the middle non-woven fabric and the lower dust-free paper are bonded through the adhesive, and a layer of film is formed after the adhesive is dried, so that the water seepage is prevented, the seepage speed is low, and the water stays on the surface of the upper non-woven fabric, so that the skin health is affected.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides the water-absorbing core body with no glue reverse absorption and the preparation process thereof, which have good penetration effect and high water absorption efficiency, ensure that the skin surface is kept dry and comfortable, and greatly reduce the problems of red buttocks, 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 absorption core body, which comprises an upper ES chemical fiber layer, a middle high polymer water absorption resin layer and a lower wood pulp ES chemical fiber mixed layer, wherein the middle high polymer water absorption resin layer is wrapped in the middle by the upper ES chemical fiber layer and the lower wood pulp ES chemical fiber mixed layer, and the upper ES chemical fiber layer and the lower wood pulp ES chemical fiber mixed layer are formed into an integrated structure through heat treatment.
Preferably, the particle size of the high polymer water-absorbing resin in the middle high polymer water-absorbing resin layer is 100-300 mesh.
Preferably, the gram weight of the upper ES chemical fiber layer is 20-60 g/m 2, the gram weight of the lower wood pulp ES chemical fiber mixed layer is 50-200 g/m 2, and the dosage of the high polymer water-absorbent resin in the middle high polymer water-absorbent resin layer is 100-400 g/m 2.
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 polymer water-absorbing resin layer comprises a first high polymer water-absorbing resin and a second high polymer water-absorbing resin, wherein the first high polymer water-absorbing resin permeates the lower surface of the upper ES chemical fiber layer, and the second high polymer water-absorbing resin permeates the upper surface of the lower wood pulp ES chemical fiber mixed layer.
Preferably, the particle size of the first high polymer water-absorbing resin is 120-300 meshes, the particle size of the second high polymer water-absorbing resin is 100-120 meshes, the water absorption rate of the first high polymer water-absorbing resin is 50-180 times, the water absorption rate of the second high polymer water-absorbing resin is 110-260 times, the dosage of the first high polymer water-absorbing resin is 50-200 g/m 2, and the dosage of the second high polymer water-absorbing resin is 50-200 g/m 2.
A preparation process of a non-adhesive reverse absorption water absorption core body comprises the following steps:
paving the wood pulp ES chemical fiber mixed layer on a workbench, arranging an exhaust fan and a vibrator below the wood pulp ES chemical fiber mixed layer, and uniformly spraying high-molecular water-absorbent resin on the upper side surface of the wood pulp ES chemical fiber mixed layer;
Under the action of an exhaust fan and a vibrator, the high molecular water-absorbing resin permeates into the wood pulp ES chemical fiber mixed layer;
paving the ES chemical fiber layer above the wood pulp ES chemical fiber mixed layer under the action of an exhaust fan;
(4) And (3) performing heat treatment to enable the ES fibers on the ES chemical fiber layer and the wood pulp ES chemical fiber mixed layer to be mutually adhered to form a formed body, cooling, rolling and cutting to obtain the water-absorbing core body with no glue reverse absorption.
Preferably, in the step (4), the temperature of the heating treatment is 100-150 ℃.
A preparation process of a non-adhesive reverse absorption water absorption core body comprises the following steps:
(1) Paving an ES chemical fiber layer and a wood pulp ES chemical fiber mixed layer on a workbench, arranging an exhaust fan and a vibrator below the ES chemical fiber layer and the wood pulp ES chemical fiber mixed layer, uniformly spraying a first polymer water-absorbent resin on the upper side surface of the ES chemical fiber layer, and uniformly spraying a second polymer water-absorbent resin on the upper side surface of the wood pulp ES chemical fiber mixed 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) The upper side surface of the ES chemical fiber layer is turned downwards, and the ES chemical fiber layer is paved above the wood pulp ES chemical fiber mixed layer under the action of an exhaust fan;
(4) And (3) performing heat treatment to enable the ES fibers on the ES chemical fiber layer and the wood pulp ES chemical fiber mixed layer to be mutually adhered to form a formed body, cooling, rolling and cutting to obtain the water-absorbing core body with no glue reverse absorption.
Preferably, in the step (4), the temperature of the heating treatment is 100-150 ℃.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
Compared with the bonding condition of adopting a bonding agent, the invention has the advantages that the liquid infiltration speed is high, the dryness of the upper layer is ensured to the greatest extent, and the manufacturing is more environment-friendly and sanitary.
The invention has no adhesive in the middle, so that liquid can quickly infiltrate from the ES chemical fiber layer to the lower wood pulp ES chemical fiber mixed layer, the middle polymer water-absorbing resin layer absorbs in the infiltration process, the diffusion effect always exists in the liquid infiltration process, the liquid which has permeated to the wood pulp ES chemical fiber mixed layer can be completely diffused after reaching the lower wood pulp ES chemical fiber mixed layer, and the liquid which has permeated to the wood pulp ES chemical fiber mixed layer can reversely infiltrate from the two ends of the water-absorbing core to the middle polymer water-absorbing resin layer, thus the moisture can be quickly absorbed, and the absorption efficiency of the water-absorbing core is improved.
The invention adopts the macromolecule water-absorbent resin with different grain sizes, the grain size of the macromolecule water-absorbent resin at the upper side is large, and the grain size of the macromolecule water-absorbent resin at the lower side is small, so that the gap between the macromolecule water-absorbent resins at the upper side is large, and the liquid can be quickly infiltrated downwards. Meanwhile, the macromolecule water-absorbent resin on the upper side is relatively weak, so that the macromolecule water-absorbent resin on the upper part of the macromolecule water-absorbent resin is not expanded rapidly to close gaps among particles when liquid seeps downwards, the liquid seeps downwards conveniently, and the upper ES chemical fiber layer is kept in a dry state, so that a human body can feel more comfortable when wearing the macromolecule water-absorbent resin.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic structural view in embodiment 2;
FIG. 3 is a schematic representation 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.
Labeling in the schematic illustration:
1-ES chemical fiber layer, 2-macromolecule water-absorbing resin layer, 3-wood pulp ES chemical fiber mixed layer, 21-first macromolecule water-absorbing resin and 22-second macromolecule water-absorbing resin.
Detailed Description
The invention will be further understood by reference to the following examples which are given to illustrate the invention but are not intended to limit the scope of the invention.
Examples
As shown in fig. 1, the present embodiment relates to a glue-free reverse absorption absorbent core, which includes an upper layer ES chemical fiber layer 1, a middle polymer absorbent resin layer 2 and a lower layer wood pulp ES chemical fiber mixed layer 3, wherein the upper layer ES chemical fiber layer 1 and the lower layer wood pulp ES chemical fiber mixed layer 3 wrap the middle polymer absorbent resin layer 2 in the middle, and the upper layer ES chemical fiber layer 1 and the lower layer wood pulp ES chemical fiber mixed layer 3 are formed into an integral 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 particle size of the high molecular water-absorbing resin in the middle high molecular water-absorbing resin layer 2 is 100mesh. The gram weight of the upper ES chemical fiber layer 1 is 30g/m 2, the gram weight of the lower wood pulp ES chemical fiber mixed layer 3 is 90g/m 2, and the dosage of the high polymer water-absorbent resin in the middle high polymer water-absorbent resin layer 2 is 250g/m 2.
The preparation process of the water-absorbing core body for the non-adhesive reverse absorption comprises the following steps:
(1) Paving the wood pulp ES chemical fiber mixed layer on a workbench, arranging an exhaust fan and a vibrator below the wood pulp ES chemical fiber mixed layer, and uniformly spraying high-molecular water-absorbent resin on the upper side surface of the wood pulp ES chemical fiber mixed layer;
(2) Under the action of an exhaust fan and a vibrator, the high molecular water-absorbing resin permeates into the wood pulp ES chemical fiber mixed layer;
(3) Paving the ES chemical fiber layer above the wood pulp ES chemical fiber mixed layer under the action of an exhaust fan;
(4) And (3) performing heat treatment to enable the ES fibers on the ES chemical fiber layer and the wood pulp ES chemical fiber mixed layer to be mutually adhered to form a formed body, cooling, rolling and cutting to obtain the water-absorbing core body with no glue reverse absorption.
In the step (4), the temperature of the heat treatment was 120 ℃.
As shown in fig. 3, above the middle of the ES chemical fiber layer 1 on the upper layer of the non-adhesive reverse absorption water absorption core, 80ml of the test solution is poured, the test solution rapidly permeates downwards and diffuses to the periphery, most of the upper ES chemical fiber layer 1 keeps dry all the time, the test solution is absorbed in the middle high molecular water absorption resin layer 2, and the test solution permeated into the lower wood pulp ES chemical fiber mixed layer 3 begins to reversely permeate into the middle high molecular water absorption resin layer 2 to be absorbed.
According to the method for measuring the slip quantity in the paper diaper (sheet or pad) of the national standard GB/T28004-2011 of the people's republic of China, the water absorbent core body with the glue-free reverse absorption is manufactured into a baby diaper as a sample, the sample is placed on an inclined plate with the inclination of (30+/-2) DEG, 100mm is taken from two ends of the center point of the water absorbent core body with the glue-free reverse absorption in the sample respectively towards the upper side to serve as a test area, 50ml of test solution is measured, the surface of the test solution free flow channel sample flows along the inclined plane, and the slip quantity is finally measured to be 11.6ml through multiple experiments and is lower than 20ml of the national standard.
According to the method for measuring the rewet amount in the national standard GB/T28004-2011 paper diapers (sheets and pads) of the people's republic of China, the water absorbent core body with the reverse absorption without glue is manufactured into a medium-sized baby paper diaper serving as a sample, 60ml of test solution is freely flowed to the surface of the center of the sample through a funnel, the same amount of test solution is injected into the funnel again in 5 minutes, a plurality of layers of filter paper with the diameter of 100mm are placed on the surface of the sample in 10 minutes, meanwhile, a standard pressing block is pressed on the filter paper, the standard pressing block is removed in 1 minute of pressing, the measurement mode is adopted for multiple tests, and the average rewet amount of the finally measured sample is 5.7g and is lower than 10g of 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 water absorbent core body with no glue reverse absorption is manufactured into an adult paper diaper which is used as a sample, the sample is laid on a horizontal table top, 80ml of test solution is measured by a separating funnel, the test solution is poured into the central position of the sample at a constant speed within 30 seconds, and after 5 minutes, no liquid leakage is observed around the sample.
Examples
As shown in fig. 2, the present embodiment relates to a non-adhesive reverse absorption absorbent core, which includes an upper layer ES chemical fiber layer 1, a middle polymer absorbent resin layer 2 and a lower layer wood pulp ES chemical fiber mixed layer 3, wherein the upper layer ES chemical fiber layer 1 and the lower layer wood pulp ES chemical fiber mixed layer 3 wrap the middle polymer absorbent resin layer 2 in the middle, and the upper layer ES chemical fiber layer 1 and the lower layer wood pulp ES chemical fiber mixed layer 3 are formed into an integral 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/m 2, and the gram weight of the lower wood pulp ES chemical fiber mixed layer 3 is 90g/m 2.
The high polymer water-absorbing resin layer 2 comprises a first high polymer water-absorbing resin 21 and a second high polymer water-absorbing resin 22, wherein the first high polymer water-absorbing resin 21 permeates the lower surface of the upper ES chemical fiber layer 1, and the second high polymer water-absorbing resin 22 permeates the upper surface of the lower wood pulp ES chemical fiber mixed layer 3.
The particle size of the first high polymer water absorbent resin 21 is 200 meshes, the particle size of the second high polymer water absorbent resin is 100 meshes, the water absorption rate of the first high polymer water absorbent resin is 100 times, the water absorption rate of the second high polymer water absorbent resin is 200 times, the dosage of the first high polymer water absorbent resin is 100g/m 2, and the dosage of the second high polymer water absorbent resin is 100g/m 2.
The preparation process of the water-absorbing core body for the non-adhesive reverse absorption comprises the following steps:
(1) Paving an ES chemical fiber layer and a wood pulp ES chemical fiber mixed layer on a workbench, arranging an exhaust fan and a vibrator below the ES chemical fiber layer and the wood pulp ES chemical fiber mixed layer, uniformly spraying a first polymer water-absorbent resin on the upper side surface of the ES chemical fiber layer, and uniformly spraying a second polymer water-absorbent resin on the upper side surface of the wood pulp ES chemical fiber mixed 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) The upper side surface of the ES chemical fiber layer is turned downwards, and the ES chemical fiber layer is paved above the wood pulp ES chemical fiber mixed layer under the action of an exhaust fan;
(4) And (3) performing heat treatment to enable the ES fibers on the ES chemical fiber layer and the wood pulp ES chemical fiber mixed layer to be mutually adhered to form a formed body, cooling, rolling and cutting to obtain the water-absorbing core body with no glue reverse absorption.
In the step (4), the temperature of the heat treatment was 120 ℃.
As shown in fig. 3, above the middle of the ES chemical fiber layer 1 on the upper layer of the non-adhesive reverse absorption water absorption core, 80ml of the test solution is poured, the test solution rapidly permeates downwards and diffuses to the periphery, most of the upper ES chemical fiber layer 1 keeps dry all the time, the test solution is absorbed in the middle high molecular water absorption resin layer 2, and the test solution permeated into the lower wood pulp ES chemical fiber mixed layer 3 begins to reversely permeate into the middle high molecular water absorption resin layer 2 to be absorbed.
According to the method for measuring the slip quantity in the paper diaper (sheet or pad) of the national standard GB/T28004-2011 of the people's republic of China, the water absorbent core body with the glue-free reverse absorption is manufactured into a baby diaper as a sample, the sample is placed on an inclined plate with the inclination of (30+/-2) DEG, 100mm is taken from two ends of the center point of the water absorbent core body with the glue-free reverse absorption in the sample respectively towards the upper side to serve as a test area, 50ml of test solution is measured, the surface of the test solution free flow channel sample flows along the inclined plane, and the slip quantity is finally measured to be 9.7ml through multiple experiments and is lower than 20ml of the national standard.
According to the method for measuring the rewet amount in the national standard GB/T28004-2011 paper diapers (sheets and pads) of the people's republic of China, the water absorbent core body with the reverse absorption without glue is manufactured into a medium-sized baby paper diaper serving as a sample, 60ml of test solution is freely flowed to the surface of the center of the sample through a funnel, the same amount of test solution is injected into the funnel again in 5 minutes, a plurality of layers of filter paper with the diameter of 100mm are placed on the surface of the sample in 10 minutes, meanwhile, a standard pressing block is pressed on the filter paper, the standard pressing block is removed in 1 minute of pressing, the measurement mode is adopted for multiple tests, and the average rewet amount of the finally measured sample is 4.9g and is lower than 10g of 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 water absorbent core body with no glue reverse absorption is manufactured into an adult paper diaper which is used as a sample, the sample is laid on a horizontal table top, 80ml of test solution is measured by a separating funnel, the test solution is poured into the central position of the sample at a constant speed within 30 seconds, and after 5 minutes, no liquid leakage is observed around the sample.
Comparative example 1
Comparative example 1 the upper ES chemical fiber layer of example 1 was replaced with a wood pulp fiber layer, and the wood pulp fiber layer was bonded together with the intermediate high-molecular water-absorbent resin layer and the lower wood pulp ES chemical fiber mixed layer by hot melt adhesive to prepare a water-absorbent core of comparative example 1 having the same thickness as in example 1.
Comparative example 1 absorbent cores and the non-adhesive reverse absorbent cores of example 1, both having dimensions 16 x 16cm, were taken as test subjects. As shown in FIG. 4, 80ml of the test solution was poured at a uniform rate over 30 seconds over the center point of the horizontally placed comparative example 1 water-absorbent core and the non-adhesive reverse-absorbent core under the same conditions, and the diffusion of the test solution at the upper surfaces (i.e., upper layers) of the comparative example 1 water-absorbent core and the non-adhesive reverse-absorbent core was observed. In the absorbent core of comparative example 1, the liquid oozes slowly after pouring, and most of the liquid diffuses outward, and the test solution has not yet poured at 15s, i.e., has completely diffused to a position 8cm from the center point on the upper surface (i.e., the edge of the core). In the water-absorbing core body with no glue reverse absorption, after the test solution is poured, the liquid quickly infiltrates downwards, the upper liquid is only diffused to the position 3.6cm away from the central point on the upper surface at 30s, and basically keeps the upper surface from diffusing outwards, and other positions on the upper surface of the core body keep dry and comfortable, and the liquid is basically absorbed by the middle layer and the lower layer.
Comparative example 2
In comparative example 2, the water-absorbent core material having the same structure as in example 1 was obtained, and the upper ES chemical fiber layer, the middle high-molecular water-absorbent resin layer and the lower wood pulp ES chemical fiber mixed layer were bonded together by hot melt adhesive to prepare a water-absorbent core having the same thickness as in example 1.
Comparative example 2 absorbent cores and the non-adhesive reverse absorbent cores of example 1, both having dimensions 16 x 16cm, were taken as test subjects. As shown in fig. 4, 80ml of the test solution was poured at a uniform rate over 30 seconds over the center point of the horizontally placed water-absorbent core of example 2 and the non-adhesive reverse-absorbent core under the same conditions, and the diffusion condition of the test solution on the upper surfaces (i.e., upper layers) of the water-absorbent core of comparative example 2 and the non-adhesive reverse-absorbent core was observed. In the absorbent core of comparative example 2, the liquid oozes slowly after pouring, and most of the liquid diffuses outward, and the test solution has not yet poured at 15s, i.e., has completely diffused to a position 8cm from the center point on the upper surface (i.e., the edge of the core). In the non-adhesive reverse absorption water absorption core, after the test solution is poured, the liquid quickly infiltrates downwards, and is only diffused to the position 3.6cm away from the center point at the 30s, and basically keeps the upper surface from diffusing outwards, and other positions on the upper surface of the core keep dry, so that the liquid is basically absorbed by the middle layer and the lower layer.
The comparison example 1 and the comparison example 2 are combined to show that the test solution in the water absorption core of the invention without glue reverse absorption has high infiltration speed and low surface diffusion speed in the water absorption core. The ES chemical fiber layer has a faster infiltration effect than the wood pulp fiber layer, and the adhesive used for bonding has a larger influence on the infiltration of the test solution.
The invention and its embodiments have been described above by way of illustration and not limitation, and the actual construction is not limited thereto as illustrated in the accompanying drawings. Therefore, those skilled in the art should not creatively design structural ways and embodiments similar to the technical scheme without departing from the gist of the present invention, and the structural ways and embodiments are all within the protection scope of the present invention.
Claims (6)
1. The glue-free reverse absorption water absorption core is characterized by comprising an upper ES chemical fiber layer, a middle high polymer water absorption resin layer and a lower wood pulp ES chemical fiber mixed layer, wherein the middle high polymer water absorption resin layer is wrapped in the middle by the upper ES chemical fiber layer and the lower wood pulp ES chemical fiber mixed layer, and the upper ES chemical fiber layer and the lower wood pulp ES chemical fiber mixed layer are formed into an integrated structure through heat treatment;
The high polymer water-absorbing resin layer comprises a first high polymer water-absorbing resin and a second high polymer water-absorbing resin, wherein the first high polymer water-absorbing resin permeates the lower surface of the upper ES chemical fiber layer, and the second high polymer water-absorbing resin permeates the upper surface of the lower wood pulp ES chemical fiber mixed layer;
The particle size of the first high polymer water-absorbing resin is 120-300 meshes, the particle size of the second high polymer water-absorbing resin is 100-120 meshes, the water absorption rate of the first high polymer water-absorbing resin is 50-180 times, the water absorption rate of the second high polymer water-absorbing resin is 110-260 times, the dosage of the first high polymer water-absorbing resin is 50-200 g/m 2, and the dosage of the second high polymer water-absorbing resin is 50-200 g/m 2.
2. The glue-free reverse absorption water absorption core according to 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 glue-free reverse absorption water absorption core according to claim 1, wherein the gram weight of the upper ES chemical fiber layer is 20-60 g/m 2, the gram weight of the lower wood pulp ES chemical fiber mixed layer is 50-200 g/m 2, and the dosage of the high polymer water absorption resin in the middle high polymer water absorption resin layer is 100-400 g/m 2.
4. The glue-free reverse absorption water absorption core according to claim 1, wherein the thickness of the lower wood pulp ES chemical fiber mixed layer is larger than that of the upper ES chemical fiber layer.
5. A process for preparing a non-adhesive reverse absorption water-absorbing core as claimed in claim 1, comprising the steps of:
(1) Paving an ES chemical fiber layer and a wood pulp ES chemical fiber mixed layer on a workbench, arranging an exhaust fan and a vibrator below the ES chemical fiber layer and the wood pulp ES chemical fiber mixed layer, uniformly spraying a first polymer water-absorbent resin on the upper side surface of the ES chemical fiber layer, and uniformly spraying a second polymer water-absorbent resin on the upper side surface of the wood pulp ES chemical fiber mixed 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) The upper side surface of the ES chemical fiber layer is turned downwards, and the ES chemical fiber layer is paved above the wood pulp ES chemical fiber mixed layer under the action of an exhaust fan;
(4) Performing heat treatment to enable the ES fibers on the ES chemical fiber layer and the wood pulp ES chemical fiber mixed layer to be mutually adhered to form a formed body, and rolling and slitting the formed body after cooling to obtain the water-absorbing core body with no glue reverse absorption;
The high polymer water-absorbing resin layer comprises a first high polymer water-absorbing resin and a second high polymer water-absorbing resin, wherein the first high polymer water-absorbing resin permeates the lower surface of the upper ES chemical fiber layer, and the second high polymer water-absorbing resin permeates the upper surface of the lower wood pulp ES chemical fiber mixed layer;
The particle size of the first high polymer water-absorbing resin is 120-300 meshes, the particle size of the second high polymer water-absorbing resin is 100-120 meshes, the water absorption rate of the first high polymer water-absorbing resin is 50-180 times, the water absorption rate of the second high polymer water-absorbing resin is 110-260 times, the dosage of the first high polymer water-absorbing resin is 50-200 g/m 2, and the dosage of the second high polymer water-absorbing resin is 50-200 g/m 2.
6. The process for preparing a non-adhesive reverse absorption water-absorbing core according to claim 5, wherein in the step (4), the temperature of the heat treatment is 100-150 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010132573.5A CN111249069B (en) | 2020-02-29 | 2020-02-29 | A glue-free reverse absorption water-absorbing core and its preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010132573.5A CN111249069B (en) | 2020-02-29 | 2020-02-29 | A glue-free reverse absorption water-absorbing core and its preparation process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111249069A CN111249069A (en) | 2020-06-09 |
| CN111249069B true CN111249069B (en) | 2025-08-08 |
Family
ID=70949498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010132573.5A Active CN111249069B (en) | 2020-02-29 | 2020-02-29 | A glue-free reverse absorption water-absorbing core and its preparation process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111249069B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113397823B (en) * | 2021-06-16 | 2022-11-25 | 浙江亿维护理用品有限公司 | Manufacturing equipment and process of sanitary nursing pad |
| CN113693823B (en) * | 2021-07-22 | 2022-12-13 | 嘉恒医药（江苏）有限公司 | Special sandwich layer production equipment for non-adhesive diaper |
| CN116999246A (en) * | 2023-08-15 | 2023-11-07 | 浙江振宇吸水材料科技有限公司 | Composite surface layer of sanitary products and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103637883A (en) * | 2013-11-19 | 2014-03-19 | 临安市振宇吸水材料有限公司 | Water-absorption core body for hygienic product and production technology thereof |
| CN104382695A (en) * | 2014-12-11 | 2015-03-04 | 天津市中科健新材料技术有限公司 | Composite water absorbent paper for absorbent product, preparation method and application of composite water absorbent paper |
| CN110179593A (en) * | 2019-07-08 | 2019-08-30 | 广东佳丝维新材料科技有限公司 | Super soft liquid absorbent wick and its preparation system and technique |
| CN212369180U (en) * | 2020-02-29 | 2021-01-19 | 浙江振宇吸水材料有限公司 | Water absorption core body capable of realizing glue-free reverse absorption |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060069367A1 (en) * | 2004-09-29 | 2006-03-30 | Andrew Waksmundzki | Absorbent core having two or more types of superabsorbent |
| WO2007111872A2 (en) * | 2006-03-24 | 2007-10-04 | Litvay John D | Absorbent product containing sap powder |
| CN103029361B (en) * | 2013-01-19 | 2016-06-22 | 李景丰 | A kind of composite absorption core body |
| CN108309570A (en) * | 2018-03-16 | 2018-07-24 | 佛山市优宝卫生用品科技有限公司 | Paper diaper core and its manufacture craft |
| CN209474986U (en) * | 2018-09-28 | 2019-10-11 | 露乐健康科技（广州）有限公司 | A kind of thin soft absorptive core |
| CN110841101A (en) * | 2019-11-27 | 2020-02-28 | 上海护理佳实业有限公司 | Environment-friendly glue-free composite core material and preparation process thereof |
-
2020
- 2020-02-29 CN CN202010132573.5A patent/CN111249069B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103637883A (en) * | 2013-11-19 | 2014-03-19 | 临安市振宇吸水材料有限公司 | Water-absorption core body for hygienic product and production technology thereof |
| CN104382695A (en) * | 2014-12-11 | 2015-03-04 | 天津市中科健新材料技术有限公司 | Composite water absorbent paper for absorbent product, preparation method and application of composite water absorbent paper |
| CN110179593A (en) * | 2019-07-08 | 2019-08-30 | 广东佳丝维新材料科技有限公司 | Super soft liquid absorbent wick and its preparation system and technique |
| CN212369180U (en) * | 2020-02-29 | 2021-01-19 | 浙江振宇吸水材料有限公司 | Water absorption core body capable of realizing glue-free reverse absorption |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111249069A (en) | 2020-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104138312B (en) | The preparation method of composite water absorbing core body | |
| CN104010605B (en) | Water-absorbable sheet structure | |
| CN106974772B (en) | Absorbent structure for absorbent article | |
| CN104367419B (en) | A kind of absorbent sanitary product composite absorbent paper and its preparation method and application | |
| CN1285782A (en) | Multilayer covering systems and their production methods | |
| CN104382695A (en) | Composite water absorbent paper for absorbent product, preparation method and application of composite water absorbent paper | |
| CN112545762B (en) | Hydrophilic non-woven fabric for sanitary products and preparation method and application thereof | |
| CN111249069A (en) | A kind of non-adhesive reverse absorption water absorbent core and preparation process thereof | |
| CN212369180U (en) | Water absorption core body capable of realizing glue-free reverse absorption | |
| CN215230677U (en) | Absorbing article | |
| CN107007399A (en) | Paper diaper core body and preparation method thereof | |
| CN115414185A (en) | High-dryness sanitary towel and production process thereof | |
| CN204092347U (en) | A kind of composite water absorbing core body | |
| CN205698259U (en) | A kind of hygienic article Water-absorption core body | |
| CN209474986U (en) | A kind of thin soft absorptive core | |
| CN111249068A (en) | Method for improving diffusion and anti-rewet performance of absorbent product by diffusion anti-rewet strengthening layer | |
| CN116999246A (en) | Composite surface layer of sanitary products and preparation method thereof | |
| CN208693621U (en) | A kind of absorptive core in paper diaper | |
| CN113749853A (en) | Paper diaper absorbing core and preparation method thereof | |
| CN209392255U (en) | A kind of amenities Water-absorption core body | |
| CN212214035U (en) | High diffusion permeability and anti-rewet absorbent product | |
| CN117281692A (en) | A kind of production technology of composite surface layer sanitary napkin | |
| CN203953964U (en) | A kind of diaper that prevents urine reverse osmosis | |
| CN214104886U (en) | Paper diaper | |
| CN211433706U (en) | Paper diaper water absorption device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 311311 Yi Yi village, Yu Qian Town, Ling'an District, Hangzhou, Zhejiang Applicant after: Zhejiang Zhenyu water absorbing material technology Co.,Ltd. Address before: 311311 Yi Yi village, Yu Qian Town, Ling'an District, Hangzhou, Zhejiang Applicant before: Zhejiang Zhenyu water absorbing material Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A water-absorbing core body with no adhesive reverse absorption and its preparation process Granted publication date: 20250808 Pledgee: Zhejiang Nanxun Rural Commercial Bank Co.,Ltd. Lin'an Branch Pledgor: Zhejiang Zhenyu water absorbing material technology Co.,Ltd. Registration number: Y2025980063802 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |