CN112451733B - Manufacturing process of super-absorbent paper diaper - Google Patents

Manufacturing process of super-absorbent paper diaper Download PDF

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CN112451733B
CN112451733B CN202011410490.4A CN202011410490A CN112451733B CN 112451733 B CN112451733 B CN 112451733B CN 202011410490 A CN202011410490 A CN 202011410490A CN 112451733 B CN112451733 B CN 112451733B
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solution
preparing
ultrafiltration
paper diaper
super
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CN112451733A (en
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邓攀
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Guizhou Kabu Baby Products Co Ltd
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Guizhou Kabu Baby Products Co Ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A61L15/60—Liquid-swellable gel-forming materials, e.g. super-absorbents
    • 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
    • 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
    • A61F13/45—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 shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/18—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing inorganic materials
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/24—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/28—Polysaccharides or their derivatives
    • 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
    • A61F2013/530489—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 being randomly mixed in with other material

Abstract

A process for preparing the super-absorbent paper diaper includes such steps as preparing PVA solution and CMCNa solution, treating in the first step to form a super-filter medium, preparing a super-filter layer as the component of absorbent core, combining it with surface layer and bottom layer to form a super-absorbent main body structure, and connecting the two ends of said main body to waist.

Description

Manufacturing process of super-absorbent paper diaper
Technical Field
The invention relates to a manufacturing process of a paper diaper, belongs to the technical field of absorbent articles, and particularly relates to a manufacturing process of a super-absorbent paper diaper.
Background
The conventional paper diaper has the advantages that the physiological saline absorption rate is far less than the pure water absorption rate, the pure water absorption rate is greater than the physiological saline, the sodium ion plasma blocks the combination of a high polymer material (super absorbent resin) and water molecules, the ratio of absorbing the physiological saline is further reduced, and the content of sodium chloride in the human urine is consistent with that of the physiological saline, so that the performance of the paper diaper on the physiological saline is high and low, and the performance of the paper diaper on the human urine absorption rate is directly reflected. Therefore, how to separate sodium ion plasma from water in urine is realized, thereby achieving the purpose of increasing the water absorption performance of the paper diaper and solving the problem that the urine absorption rate of the paper diaper is difficult to be improved.
Disclosure of Invention
The invention provides a manufacturing process of a super-absorption paper diaper, aiming at the technical problem that sodium ion plasma influences the water absorption performance of the paper diaper in the background technology, effectively eliminating the influence of the sodium ion plasma in human urine on the barrier effect of the water absorption material of the paper diaper, improving the overall water absorption performance, and the specific technical scheme is as follows:
a manufacturing process of a super-absorbent paper diaper comprises the following steps:
firstly, preparing a PVA solution, weighing 1 part of PVA solid, adding 100 parts of deionized water, stirring at normal temperature for at least 12 hours until the PVA solid is completely dissolved, and standing the PVA solution until no bubbles exist;
preparing a CMCNa solution, weighing 1 part of CMCNa solid, adding 100 parts of deionized water, stirring at a constant temperature of 90 ℃ for not less than 3 hours, and cooling and standing the CMCNa solution until no bubbles exist;
preparing an ultrafiltration substrate, and fully mixing the CMCNa solution and the PVA solution according to the proportion of 1: 1-1: 4 to form the ultrafiltration substrate;
preparing an ultrafiltration medium, and preparing the ultrafiltration substrate into the ultrafiltration medium through a first process;
preparing AlCl3Weighing 1 part of AlCl3Solid, adding 100 parts of deionized water, soaking for 30 minutes at normal temperature to completely dissolve the solid;
preparing ultrafiltering layer, adding AlCl to the ultrafiltering medium3Preparing the solution into a super-filter layer through a second procedure;
and assembling the paper diaper, namely combining the super-filter layer serving as a component of the absorption core, the surface layer material and the bottom layer material to form a super-absorption main body structure of the paper diaper, and connecting waistlines to two ends of the paper diaper main body to form a finished product of the paper diaper.
As a further technical scheme of the invention, in the third step, the ratio of the CMCNa solution to the PVA solution is 1: 2.
As a further aspect of the present invention, the first step includes the steps of: and (3) putting the ultrafiltration substrate into a membrane making frame, putting the filter membrane material into the membrane making frame, and after the two materials fully react for 20 minutes, putting the membrane material into an oven to be dried at the temperature of 60 ℃.
As a further technical scheme of the invention, the filter membrane material comprises non-woven fabrics and a filter membrane.
As a further aspect of the present invention, the second step includes the following steps: said ultrafiltration medium and said AlCl3The ratio of the solution is 2:1, andthe reaction time is 30 minutes, and the excessive solution is removed and then is placed into an oven to be dried for 3 days at the temperature of 50 ℃.
As a further aspect of the present invention, the first step includes the steps of: and (3) putting the ultrafiltration substrate into a membrane making frame, fully reacting for 2 hours, removing the redundant solution, and then putting the ultrafiltration substrate into an oven to be dried at the temperature of 60 ℃.
As a further aspect of the present invention, the second step includes the following steps: said ultrafiltration medium and said AlCl3The ratio of the solution is 2:1, the reaction time is 1 hour, the redundant solution is removed and then is placed into an oven to be dried under the environment of 50 ℃, the dried ultrafiltration medium is taken out and smashed into fragments with the average diameter not more than 2mm, and the fragments are fully mixed with the high polymer material.
As a further aspect of the present invention, the first step includes the steps of: and removing redundant solution after the ultrafiltration substrate fully reacts.
As a further aspect of the present invention, the second step includes the following steps: said ultrafiltration medium and said AlCl3The ratio of the solution is 2:1, the two are fully reacted, and the solution is dried after being mixed with the dust-free paper after the redundant solution is removed.
The invention has the following beneficial effects: through improving the structure of the absorption core in the existing paper diaper, the super-filter layer prepared by a new process is added, sodium ion plasma in human urine is trapped on the surface of the super-filter layer, so that the water absorption capacity of the high polymer material in the absorption core is prevented from being blocked by the sodium ion plasma, the water absorption performance of the absorption core is effectively improved, the surface layer of the paper diaper is drier and more comfortable, and the comfort performance of a user when wearing the paper diaper is improved.
Detailed Description
Embodiments of the present invention will be described with reference to the following examples, which are only preferred examples for better illustrating the present invention itself, and the embodiments of the present invention are not limited to the following examples, and the present invention relates to the relevant parts in the technical field, which should be regarded as the known technology in the technical field and can be known and mastered by those skilled in the technical field.
The invention discloses a manufacturing process of a super-absorbent paper diaper, which comprises the following steps:
firstly, preparing a PVA solution, weighing 1 part of PVA solid, adding 100 parts of deionized water, stirring at normal temperature for no less than 12 hours until the PVA solid is completely dissolved, and standing the PVA solution until no bubbles exist;
preparing a CMCNa solution, weighing 1 part of CMCNa solid, adding 100 parts of deionized water, stirring at a constant temperature of 90 ℃ for not less than 3 hours, and cooling and standing the CMCNa solution until no bubbles exist;
preparing an ultrafiltration substrate, and fully mixing the CMCNa solution and the PVA solution according to the proportion of 1: 1-1: 4 to form the ultrafiltration substrate;
preparing an ultrafiltration medium, and preparing the ultrafiltration substrate into the ultrafiltration medium through a first process;
fifth preparation of AlCl3Weighing 1 part of AlCl3Solid, adding 100 parts of deionized water, soaking for 30 minutes at normal temperature to completely dissolve the solid;
preparing ultrafiltering layer, adding AlCl to the ultrafiltering medium3Preparing the solution into a super-filter layer through a second procedure;
and assembling the paper diaper, namely combining the super-filter layer serving as a component of the absorption core, the surface layer material and the bottom layer material to form a super-absorption main body structure of the paper diaper, and connecting waistlines to two ends of the paper diaper main body to form a finished product of the paper diaper.
According to the paper diaper manufactured by the process, the interception rate of sodium ions can be controlled to be 20-30%, the attachment rate of the sodium ions is further effectively reduced, and the absorption rate of the high polymer absorption material to urine is improved, wherein the content of the sodium ions is reduced, and the parameter capable of directly responding is the reduction of the conductivity, and the conductivity of pure physiological saline is about 3.98, and the conductivity under the interception effect of the ultrafiltration layer is reduced to be at least 2.72, so that the interception of the sodium ions by the ultrafiltration layer can be intuitively reflected.
PVA (polyvinyl alcohol) and CMCNa (sodium carboxymethylcellulose) are very good preparation materials used as functional membranes, the sodium ion plasma adsorption capacity of the prepared membranes is in direct proportion to the compactness of the membranes, and the materials are characterized in that the membranes can be both stably separated and retained in the long-term operation process, and the effective time of the materials can basically realize complete coverage in the whole service cycle for the environment where the paper diapers are used, so that the concentration of the materials can be taken in a range of 1% or more in the configuration process.
The PVA/CMCNa film body has good hydrophilicity, smooth surface, strong electronegativity, excellent binding capacity with sodium ions and the like, stable chemical property, good acid and alkali resistance and oxidation resistance, better tolerance to human urine, capability of reducing the emission of unpleasant gas in the using process and improvement of the whole wearing comfort degree.
However, in the prior art, glutaraldehyde is generally adopted as a cross-linking agent for processing the PVA/CMCNa to enable the PVA/CMCNa to be combined into a net-shaped structure, a multilayer coating-in-situ cross-linking mode is adopted for preparing the PVA/CMCNa multilayer composite semipermeable membrane, or copper sulfate is adopted as the cross-linking agent, so that the production process is complex, and factors needing to be considered in the middle are many, therefore, the preparation of the core body of the paper diaper needs to be carried out on a large scale, and the use requirement cannot be met in the commercial link3As a reaction adding reagent, the use cost is reduced, the reaction mode is changed, and the final produced ultrafiltration medium is organically integrated into the sodium ion plasma ultrafiltration membrane to become an important component of the paper diaper absorption core, so that the rejection rate of sodium ion plasma is ensured, and the water absorption performance of the high polymer absorption material is improved.
In the third step, the ratio of the CMCNa solution to the PVA solution is 1: 2.
In practical production and use, the CMCNa solution and the PVA solution have a ratio of 1: 4-1: 1 which can achieve a relatively obvious sodium ion plasma rejection rate result, but the sodium ion plasma rejection rate under the ratio can reach 25% -30% on average and even higher by taking 1:2 as an optimal ratio, and the sodium ion plasma rejection rate can be reduced to about 15% under the condition that the ratio difference between the two is relatively large, namely 1:4 or 1: 1.
The first preferred embodiment: the first step includes the following steps: and (3) putting the ultrafiltration substrate into a membrane making frame, putting the filter membrane material into the membrane making frame, and after the two materials fully react for 20 minutes, putting the membrane material into an oven to be dried at the temperature of 60 ℃.
Further, the filter membrane material comprises a non-woven fabric and a filter membrane.
Further, the second process includes the following steps: the ratio of the ultrafiltration medium to the AlCl3 solution is 2:1, the reaction time is 30 minutes, and after removing the redundant solution, the ultrafiltration medium is placed in an oven to be dried for 3 days at the temperature of 50 ℃.
In this embodiment, the prepared finished product exceeds the filter membrane layer, and needs to be combined with other structures of the diaper core to form a complete absorption core material, and as the embodiment of improving the capability of the polymeric absorption material in the diaper core, the interception rate of the sodium ions and the plasma is the most intuitive embodiment, wherein the content of the sodium ions and the plasma affects the conductivity of the liquid, so that the following results are obtained by comparing the conductivity of the deionized water, the conventional saline and the saline filtered by the ultrafiltration membrane layer obtained in the first embodiment:
Figure GDA0003564384700000061
table 1 NaCl rejection comparison table 1
Wherein, the table above adopts 10g PVA and 1000mL deionized water, 10g CMCNa and 1000mL deionized water, and 10g AlCl3The proportion of the PVA/CMCNa and 1000mL of deionized water is shown in the table, after the PVA/CMCNa exceeds the interception function of a filter membrane layer, the conductivity of the physiological saline is obviously reduced, and the interception rate of sodium ions and the like is increased, wherein the reason that the experimental result does not reach more than 20 percent is that the ultrafiltration membrane is preparedWhile the stirring and mixing did not meet the expected requirements, it was observed that there was a clear correlation between the drying time and the retention, with numbers 3-8 being the result of 3 days of drying, thus giving a processing time of 3 days of drying being the preferred one.
The finished product under the embodiment is preferably used as the upper layer structure of the paper diaper absorbing core body, and the combination efficiency of the macromolecule absorbing material and water at the lower layer is ensured by intercepting sodium ion plasma.
The second preferred embodiment: the first step includes the following steps: and (3) putting the ultrafiltration substrate into a membrane making frame, fully reacting for 2 hours, removing the redundant solution, and putting the ultrafiltration substrate into an oven to be dried at the temperature of 60 ℃.
Further, the second process includes the following steps: said ultrafiltration medium and said AlCl3The ratio of the solution is 2:1, the reaction time is 1 hour, the redundant solution is removed and then is placed into an oven to be dried under the environment of 50 ℃, the dried ultrafiltration medium is taken out and smashed into fragments with the average diameter not more than 2mm, and the fragments are fully mixed with the high polymer material.
In this embodiment, the prepared finished product belongs to the main body of the absorbent core, which is equivalent to organically integrating the material of the ultrafiltration layer with the polymer material, preferentially absorbing the sodium ions plasma permeating into the absorbent core, and avoiding reducing the liquid absorption rate of the absorbent core by combining with the polymer material, so that the parameters of absorption time, expansion degree, rewet amount and the like become the factors under consideration in this embodiment, the above-mentioned factors are detected by adding physiological saline to the polymer core body with and without the ultrafiltration layer material for 2 times, and the following specific results are obtained:
Figure GDA0003564384700000071
table 2 table of the results of the physiological saline penetration test
Wherein, the table above adopts 10g PVA and 1000mL deionized water, 10g CMCNa and 1000mL deionized water, 10g AlCl3And 1000mL of deionizedThe proportion of the sub-water can be seen from the table, the interception rate of sodium ions reaches the range of 20% -23% after the interception effect of the ultrafiltration membrane layer material, from the result of the penetration test, the absorption core material added into the membrane is obviously superior to the absorption core without the membrane in the aspects of primary absorption time, secondary absorption time, rewet amount and diffusion length, thereby showing that the filtration membrane layer has obvious help for the interception of the sodium ions on the improvement of the water absorption performance of the high polymer material, and the reason that the promotion amount does not reach the optimal result is that the mixing degree of the broken membrane and the high polymer material, the breakage degree of the membrane and the reaction time do not reach ideal values, and the promotion can be realized by improving the processing environment and other modes.
In this embodiment, the main structure of the absorbent core is prepared, so that the absorbent core can be further matched with other structures of the diaper to improve the absorption performance and the wearing comfort.
The third preferred embodiment: the first step includes the following steps: and removing redundant solution after the ultrafiltration substrate fully reacts.
Further, the second process includes the following steps: said ultrafiltration medium and said AlCl3The ratio of the solution is 2:1, the two are fully reacted, and the solution is dried after being mixed with the dust-free paper after the redundant solution is removed.
In this example, similar to the results of the first example, the filtering membrane structure of sodium ion plasma is obtained, so that it is also necessary to combine with other structures of the diaper core to form a complete absorbing core material, and as an embodiment of improving the ability of the polymeric absorbing material in the diaper core, the conductivity of the normal saline and the saline filtered by the ultrafiltration membrane layer obtained in the third example are compared to obtain the following results:
Figure GDA0003564384700000081
table 3 NaCl rejection compare table 2
Wherein, the table above uses 20g PVA and 2000mL deionized water, 10g CMCNa and 1000mL of deionized water and 10g of AlCl3The proportion of the ultrafiltration membrane to 1000mL of deionized water can be seen from the table, the ultrafiltration membrane structure which is obtained by adopting the simplest processing mode has no requirement on processing precision, the processing procedure is simplified, but the retention rate of sodium ions and plasma can reach about 17%, the conductivity of filtered physiological saline is obviously reduced, and the absorption performance of a high polymer material is improved.
In conclusion, the beneficial effects of the invention are mainly reflected in that: by improving the structure of the absorption core in the existing paper diaper and adding the ultra-filtration layer prepared by the new process, sodium ion plasma in human urine is trapped on the surface of the ultra-filtration layer, so that the water absorption capacity of the high polymer material in the absorption core is prevented from being blocked by the sodium ion plasma, the water absorption performance of the absorption core is effectively improved, the surface layer of the paper diaper is drier, and the comfort performance of a user when wearing the paper diaper is improved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (7)

1. A manufacturing process of a super-absorbent paper diaper is characterized by comprising the following steps:
firstly, preparing a PVA solution, weighing 1 part of PVA solid, adding 100 parts of deionized water, stirring at normal temperature for no less than 12 hours until the PVA solid is completely dissolved, and standing the PVA solution until no bubbles exist;
preparing a CMCNa solution, weighing 1 part of CMCNa solid, adding 100 parts of deionized water, stirring at a constant temperature of 90 ℃ for not less than 3 hours, and cooling and standing the CMCNa solution until no bubbles exist;
preparing an ultrafiltration substrate, and fully mixing the CMCNa solution and the PVA solution according to the proportion of 1: 1-1: 4 to form the ultrafiltration substrate;
preparing an ultrafiltration medium, and preparing the ultrafiltration substrate into the ultrafiltration medium through a first process;
preparing AlCl3Weighing 1 part of AlCl3Solid, adding 100 parts of deionized water, soaking for 30 minutes at normal temperature to completely dissolve the solid;
preparing ultrafiltering layer, adding AlCl to the ultrafiltering medium3Preparing the solution into a super-filter layer through a second procedure;
seventhly, assembling the paper diaper, namely combining the super-filter layer serving as a component of the absorption core with the surface layer material and the bottom layer material to form a paper diaper super-absorption main body structure, and connecting waistlines to two ends of the paper diaper main body to form a finished paper diaper;
the first step includes the following steps: putting the ultrafiltration substrate into a membrane making frame, fully reacting for 2 hours, removing the redundant solution, and putting the ultrafiltration substrate into an oven to be dried at the temperature of 60 ℃;
the second step includes the following steps: said ultrafiltration medium and said AlCl3The ratio of the solution is 2:1, the reaction time is 1 hour, the redundant solution is removed and then is placed into an oven to be dried under the environment of 50 ℃, the dried ultrafiltration medium is taken out and smashed into fragments with the average diameter not more than 2mm, and the fragments are fully mixed with the high polymer material.
2. The process for manufacturing the super absorbent paper diaper according to claim 1, wherein the ratio of the CMCNa solution to the PVA solution in the third step is 1: 2.
3. A manufacturing process of a super-absorbent paper diaper is characterized by comprising the following steps:
firstly, preparing a PVA solution, weighing 1 part of PVA solid, adding 100 parts of deionized water, stirring at normal temperature for no less than 12 hours until the PVA solid is completely dissolved, and standing the PVA solution until no bubbles exist;
preparing a CMCNa solution, weighing 1 part of CMCNa solid, adding 100 parts of deionized water, stirring at a constant temperature of 90 ℃ for not less than 3 hours, and cooling and standing the CMCNa solution until no bubbles exist;
preparing an ultrafiltration substrate, and fully mixing the CMCNa solution and the PVA solution according to the proportion of 1: 1-1: 4 to form the ultrafiltration substrate;
preparing an ultrafiltration medium, and preparing the ultrafiltration substrate into the ultrafiltration medium through a first process;
preparing AlCl3Solution, weighing 1 part of AlCl3Solid, adding 100 parts of deionized water, soaking for 30 minutes at normal temperature to completely dissolve the solid;
preparing ultrafiltering layer, adding AlCl to the ultrafiltering medium3Preparing the solution into a super-filter layer through a second procedure;
seventhly, assembling the paper diaper, namely combining the super-filter layer serving as a component of the absorption core with the surface layer material and the bottom layer material to form a paper diaper super-absorption main body structure, and connecting waistlines to two ends of the paper diaper main body to form a finished product of the paper diaper;
the first step includes the following steps: putting the ultrafiltration substrate into a membrane making frame, putting a filter membrane material into the membrane making frame, and putting the ultrafiltration substrate and the filter membrane material into an oven to be dried at the temperature of 60 ℃ after the ultrafiltration substrate and the filter membrane material are fully reacted for 20 minutes;
the second step includes the following steps: said ultrafiltration medium and said AlCl3The ratio of the solution is 2:1, the reaction time is 30 minutes, and the solution is dried in an oven at 50 ℃ for 3 days after the excessive solution is removed.
4. The process for making a superabsorbent diaper of claim 3 wherein the filter membrane material comprises a filter membrane and a nonwoven.
5. The process for making a superabsorbent diaper as claimed in claim 3, wherein in the third step, the ratio of the CMCNa solution to the PVA solution is 1: 2.
6. A manufacturing process of a super-absorbent paper diaper is characterized by comprising the following steps:
firstly, preparing a PVA solution, weighing 1 part of PVA solid, adding 100 parts of deionized water, stirring at normal temperature for no less than 12 hours until the PVA solid is completely dissolved, and standing the PVA solution until no bubbles exist;
preparing a CMCNa solution, weighing 1 part of CMCNa solid, adding 100 parts of deionized water, stirring at a constant temperature of 90 ℃ for not less than 3 hours, and cooling and standing the CMCNa solution until no bubbles exist;
preparing an ultrafiltration substrate, and fully mixing the CMCNa solution and the PVA solution according to the proportion of 1: 1-1: 4 to form the ultrafiltration substrate;
preparing an ultrafiltration medium, and preparing the ultrafiltration substrate into the ultrafiltration medium through a first process;
preparing AlCl3Weighing 1 part of AlCl3Solid, adding 100 parts of deionized water, soaking for 30 minutes at normal temperature to completely dissolve the solid;
preparing ultrafiltering layer, adding AlCl to the ultrafiltering medium3Preparing the solution into a super-filter layer through a second procedure;
seventhly, assembling the paper diaper, namely combining the super-filter layer serving as a component of the absorption core with the surface layer material and the bottom layer material to form a paper diaper super-absorption main body structure, and connecting waistlines to two ends of the paper diaper main body to form a finished paper diaper;
the first step includes the following steps: removing redundant solution after the ultrafiltration substrate is fully reacted;
the second step includes the following steps: said ultrafiltration medium and said AlCl3The ratio of the solution is 2:1, the two are fully reacted, and the solution is dried after being mixed with the dust-free paper after the redundant solution is removed.
7. The process for making a superabsorbent diaper of claim 6, wherein in the third step, the ratio of the CMCNa solution to the PVA solution is 1: 2.
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