CN113440642A - Formula and preparation method of disposable degradable diaper - Google Patents
Formula and preparation method of disposable degradable diaper Download PDFInfo
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- CN113440642A CN113440642A CN202110792743.7A CN202110792743A CN113440642A CN 113440642 A CN113440642 A CN 113440642A CN 202110792743 A CN202110792743 A CN 202110792743A CN 113440642 A CN113440642 A CN 113440642A
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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
- A61L15/62—Compostable, hydrosoluble or hydrodegradable 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
- A61L15/18—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
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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
- A61L15/22—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
- 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
- A61L15/425—Porous materials, e.g. foams or sponges
-
- 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
- A61L15/46—Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
-
- 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
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
- A61L2300/404—Biocides, antimicrobial agents, antiseptic agents
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Hematology (AREA)
- Public Health (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of degradable urine pad formulas, in particular to a formula and a preparation method of a disposable degradable urine pad.
Description
Technical Field
The invention relates to the technical field of degradable urine pad formulas, in particular to a formula of a disposable degradable urine pad and a preparation method thereof.
Background
The disposable chemical fiber urine pad sold in the market at present and the pet excrement form a mixture which generates garbage classification and can not be sorted (the chemical fiber is a recyclable material, and the pet excrement is a biomass material), and forms bacterial colonies and the like in the storage and transportation processes; the disposable chemical fiber urine pad is a product made of traditional inertial thinking materials, and has no advancement and environmental protection sustainability.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a technical scheme capable of solving the problems.
A formula of a disposable degradable urine pad comprises a water-soluble film layer, a water-absorbing hydrogel layer and an organic silicon hydrophobic layer, wherein the water-soluble film layer is arranged on the inner side of the urine pad, the water-absorbing hydrogel layer is arranged at the upper end of the hydrophilic surface of the water-soluble film layer, and the organic silicon hydrophobic layer is arranged at the upper end of the water-absorbing hydrogel layer; the water-soluble film layer is prepared by stirring hydrolyzed polyvinyl alcohol, modified corn starch, talcum powder and bacteriostatic agent, wherein the weight ratio of the hydrolyzed polyvinyl alcohol is between 30 and 60 parts, the weight ratio of the modified corn starch is between 25 and 55 parts, the weight ratio of the talcum powder is between 5 and 20 parts, and the weight ratio of the bacteriostatic agent is between 0.1 and 2 parts; the water-absorbing hydrogel layer is made of sodium polyacrylate, polyvinyl alcohol and glycol solvent, wherein the weight ratio of the sodium polyacrylate is 45-65 parts, the weight ratio of the polyvinyl alcohol is 5-25 parts, and the weight ratio of the glycol solvent is 40-60 parts; the organic silicon hydrophobic layer is prepared from 1-10 parts of PVP suspension, 0.1-2 parts of bacteriostatic agent and 0.1-2 parts of biomass deodorant by weight.
Preferably, the water-soluble film layer is prepared by stirring 40 parts of hydrolyzed polyvinyl alcohol, 40 parts of modified corn starch, 10 parts of talcum powder and 0.5 part of bacteriostatic agent; the water-absorbing hydrogel layer is prepared from 55 parts of sodium polyacrylate, 15 parts of polyvinyl alcohol and 50 parts of glycol solvent; the organic silicon hydrophobic layer is prepared from 5 parts of PVP suspension, 1 part of bacteriostatic agent and 0.5 part of biomass deodorant.
Preferably, the water-soluble film layer is prepared by stirring 50 parts of hydrolyzed polyvinyl alcohol, 50 parts of modified corn starch, 15 parts of talcum powder and 1 part of bacteriostatic agent; the water-absorbing hydrogel layer is prepared from 60 parts of sodium polyacrylate, 15 parts of polyvinyl alcohol and 60 parts of glycol solvent; the organic silicon hydrophobic layer is prepared from 1 part of PVP suspension, 0.5 part of bacteriostatic agent and 1 part of biomass deodorant.
Preferably, the water-soluble film layer is prepared by stirring 40 parts of hydrolyzed polyvinyl alcohol, 40 parts of modified corn starch, 10 parts of talcum powder and 0.5 part of bacteriostatic agent; the water-absorbing hydrogel layer is prepared from 55 parts of sodium polyacrylate, 10 parts of polyvinyl alcohol and 50 parts of glycol solvent; the organic silicon hydrophobic layer is prepared from 5 parts of PVP suspension, 0.8 part of bacteriostatic agent and 0.8 part of biomass deodorant.
Preferably, the water-absorbing hydrogel layer between the water-soluble film layers is provided with a hydrophobic isolation layer, and the hydrophobic isolation layer is prepared from 20% organosilicon-containing isolation emulsion and 80 parts of coating solution mixed and dissolved by deionized water, wherein the isolation emulsion is 20 parts, and the coating solution is 80 parts.
Preferably, the silicone hydrophobic layer is provided with a plurality of through holes.
A preparation method of a disposable degradable urine pad comprises the following steps:
and S1, placing the water-soluble film layer inside the urine pad.
And S2, placing the hydrophobic isolation layer on the upper end of the water-soluble film layer.
And S3, placing the water-absorbing hydrogel layer on the upper end of the hydrophobic isolation layer.
And S4, placing the organic silicon hydrophobic layer on the upper end of the water-absorbing hydrogel layer.
Compared with the prior art, the invention has the beneficial effects that: the disposable chemical fiber urine pad can be put into a toilet for flushing and discharging, and solves the problem that garbage of a mixed object formed by the used disposable chemical fiber urine pad and pet excrement in the same type in the existing market can not be sorted.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic view of the structure of a silicone hydrophobic layer.
In the figure: a water-soluble film layer-1, a water-absorbing hydrogel layer-2, a hydrophobic isolation layer-3, an organic silicon hydrophobic layer-4 and a through hole-5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, in the embodiment of the invention, a disposable degradable urine pad formula includes a water-soluble film layer 1, a water-absorbent hydrogel layer 2 and an organic silicon hydrophobic layer 4, wherein the water-soluble film layer 1 is formed on the inner side of the urine pad, the water-absorbent hydrogel layer 2 is installed on the upper end of the hydrophilic surface of the water-soluble film layer 1, and the organic silicon hydrophobic layer 4 is installed on the upper end of the water-absorbent hydrogel layer 2; the water-soluble film layer 1 is prepared by stirring hydrolyzed polyvinyl alcohol, modified corn starch, talcum powder and bacteriostatic agent, wherein the weight ratio of the hydrolyzed polyvinyl alcohol is between 30 and 60 parts, the weight ratio of the modified corn starch is between 25 and 55 parts, the weight ratio of the talcum powder is between 5 and 20 parts, and the weight ratio of the bacteriostatic agent is between 0.1 and 2 parts; the water-absorbing hydrogel layer 2 is made of 45-65 parts of sodium polyacrylate, 5-25 parts of polyvinyl alcohol and 40-60 parts of glycol solvent by weight; the organic silicon hydrophobic layer 4 is made of PVP suspension, bacteriostatic agent and biomass deodorant, wherein the weight ratio of the PVP suspension is between 1 and 10 parts, the weight ratio of the bacteriostatic agent is between 0.1 and 2 parts, and the weight ratio of the biomass deodorant is between 0.1 and 2 parts; the product has the functions of absorbing and neutralizing the peculiar smell of pet excrement, inhibiting bacteria, flocculating and preventing leakage by adding materials such as sodium polyacrylate, bacteriostatic agent, biomass deodorant and the like into a polyvinyl alcohol carrier for blending modification, realizes the improvement of air and bacteria falling in pet environment, can be flushed and discharged in a toilet after being used, and solves the problem that garbage of a mixed object formed by the disposable chemical fiber urine pad applied to the same kind in the existing market and the pet excrement cannot be sorted and treated.
Preferably, the water-soluble film layer 1 is prepared by stirring 40 parts of hydrolyzed polyvinyl alcohol, 40 parts of modified corn starch, 10 parts of talcum powder and 0.5 part of bacteriostatic agent; the water-absorbing hydrogel layer 2 is made of 55 parts of sodium polyacrylate, 15 parts of polyvinyl alcohol and 50 parts of glycol solvent; the organic silicon hydrophobic layer 4 is prepared from 5 parts of PVP suspension, 1 part of bacteriostatic agent and 0.5 part of biomass deodorant, and the organic silicon hydrophobic layer is dissolved in high-temperature water through a urine pad adjusted according to a specific proportion.
Preferably, the water-soluble film layer 1 is prepared by stirring 50 parts of hydrolyzed polyvinyl alcohol, 50 parts of modified corn starch, 15 parts of talcum powder and 1 part of bacteriostatic agent; the water-absorbing hydrogel layer 2 is made of sodium polyacrylate, polyvinyl alcohol and glycol solvent, wherein the sodium polyacrylate accounts for 60 parts, the polyvinyl alcohol accounts for 15 parts, and the glycol solvent accounts for 60 parts; the organic silicon hydrophobic layer 4 is prepared from 1 part of PVP suspension, 0.5 part of bacteriostatic agent and 1 part of biomass deodorant, and the invention is suitable for dissolving in normal temperature water through a urine pad adjusted according to a specific proportion.
Preferably, the water-soluble film layer 1 is prepared by stirring 40 parts of hydrolyzed polyvinyl alcohol, 40 parts of modified corn starch, 10 parts of talcum powder and 0.5 part of bacteriostatic agent; the water-absorbing hydrogel layer 2 is made of 55 parts of sodium polyacrylate, 10 parts of polyvinyl alcohol and 50 parts of glycol solvent; the organic silicon hydrophobic layer 4 is prepared from 5 parts of PVP suspension, 0.8 part of bacteriostatic agent and 0.8 part of biomass deodorant, and the invention is suitable for dissolving in low-temperature water through a urine pad adjusted according to a specific proportion.
Preferably, the lower end of the water-soluble film layer 1 comprises a hydrophobic isolation layer 3, the hydrophobic isolation layer 3 is prepared by spraying or printing an isolation emulsion containing 20% of organic silicon and a coating solution mixed and dissolved by deionized water, wherein the isolation emulsion is 20 parts, and the deionized water is mixed and dissolved by 80 parts.
Preferably, the organic silicon hydrophobic layer 4 is provided with a plurality of through holes 5, and the organic silicon hydrophobic ink layer 4 is made to be hydrophobic conveniently by the through holes 5.
A preparation method of a disposable degradable urine pad comprises the following steps:
and S1, placing the water-soluble film layer 1 inside the diaper.
And S2, placing the hydrophobic isolation layer 3 at the upper end of the water-soluble film layer 1.
And S3, placing the water-absorbing hydrogel layer 2 on the upper end of the hydrophobic isolation layer 3.
S4, placing the organic silicon hydrophobic layer 4 on the upper end of the water-absorbing hydrogel layer 2.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (7)
1. A formula of a disposable degradable urine pad is characterized in that the urine pad comprises a water-soluble film layer (1), a water-absorbing hydrogel layer (2) and an organic silicon hydrophobic layer (4), wherein the water-soluble film layer (1) is prepared on the inner side of the urine pad, the water-absorbing hydrogel layer (2) is arranged at the upper end of the hydrophilic surface of the water-soluble film layer (1), and the organic silicon hydrophobic layer (4) is arranged at the upper end of the water-absorbing hydrogel layer (2);
the water-soluble film layer (1) is prepared by stirring hydrolyzed polyvinyl alcohol, modified corn starch, talcum powder and bacteriostatic agent, wherein the weight ratio of the hydrolyzed polyvinyl alcohol is between 30 and 60 parts, the weight ratio of the modified corn starch is between 25 and 55 parts, the weight ratio of the talcum powder is between 5 and 20 parts, and the weight ratio of the bacteriostatic agent is between 0.1 and 2 parts;
the water-absorbing hydrogel layer (2) is made of sodium polyacrylate, polyvinyl alcohol and glycol solvent, wherein the weight ratio of the sodium polyacrylate is 45-65 parts, the weight ratio of the polyvinyl alcohol is 5-25 parts, and the weight ratio of the glycol solvent is 40-60 parts;
the organic silicon hydrophobic layer (4) is prepared from 1-10 parts of PVP suspension, 0.1-2 parts of bacteriostatic agent and 0.1-2 parts of biomass deodorant by weight.
2. The formula of the disposable degradable urine pad of claim 1, wherein the water-soluble film layer (1) is prepared by stirring 40 parts of hydrolyzed polyvinyl alcohol, 40 parts of modified corn starch, 10 parts of talcum powder and 0.5 part of bacteriostatic agent;
the water-absorbing hydrogel layer (2) is prepared from 55 parts of sodium polyacrylate, 15 parts of polyvinyl alcohol and 50 parts of glycol solvent;
the organic silicon hydrophobic layer (4) is prepared from 5 parts of PVP suspension, 1 part of bacteriostatic agent and 0.5 part of biomass deodorant.
3. The formula of the disposable degradable urine pad of claim 1, wherein the water-soluble film layer (1) is prepared by stirring 50 parts of hydrolyzed polyvinyl alcohol, 50 parts of modified corn starch, 15 parts of talcum powder and 1 part of bacteriostatic agent;
the water-absorbing hydrogel layer (2) is prepared from 60 parts of sodium polyacrylate, 15 parts of polyvinyl alcohol and 60 parts of glycol solvent;
the organic silicon hydrophobic layer (4) is prepared from 1 part of PVP suspension, 0.5 part of bacteriostatic agent and 1 part of biomass deodorant.
4. The formula of the disposable degradable urine pad of claim 1, wherein the water-soluble film layer (1) is prepared by stirring 40 parts of hydrolyzed polyvinyl alcohol, 40 parts of modified corn starch, 10 parts of talcum powder and 0.5 part of bacteriostatic agent;
the water-absorbing hydrogel layer (2) is prepared from 55 parts of sodium polyacrylate, 10 parts of polyvinyl alcohol and 50 parts of glycol solvent;
the organic silicon hydrophobic layer (4) is prepared from 5 parts of PVP suspension, 0.8 part of bacteriostatic agent and 0.8 part of biomass deodorant.
5. The formula of the disposable degradable diaper according to claim 1, wherein the lower end of the water-soluble film layer (1) comprises a hydrophobic isolation layer (3), and the hydrophobic isolation layer (3) is prepared by spraying or printing a 20% silicone-containing isolation emulsion and a deionized water miscible coating solution, wherein 20 parts of the isolation emulsion and 80 parts of the deionized water are miscible.
6. The disposable degradable diaper formulation according to claim 1, wherein the silicone hydrophobic layer (4) is provided with a plurality of through holes (5).
7. A preparation method of a disposable degradable urine pad is characterized by comprising the following steps:
s1, placing the water-soluble film layer (1) inside the urine pad;
s2, placing the hydrophobic isolation layer (3) at the lower end of the water-soluble film layer (1);
s3, placing the water-absorbing hydrogel layer (2) on the upper end of the hydrophobic isolation layer (3);
s4, placing the organic silicon hydrophobic layer (4) on the upper end of the water-absorbing hydrogel layer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110792743.7A CN113440642A (en) | 2021-07-13 | 2021-07-13 | Formula and preparation method of disposable degradable diaper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110792743.7A CN113440642A (en) | 2021-07-13 | 2021-07-13 | Formula and preparation method of disposable degradable diaper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113440642A true CN113440642A (en) | 2021-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110792743.7A Withdrawn CN113440642A (en) | 2021-07-13 | 2021-07-13 | Formula and preparation method of disposable degradable diaper |
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| CN (1) | CN113440642A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115006337A (en) * | 2022-07-11 | 2022-09-06 | 广州中医药大学顺德医院(佛山市顺德区中医院) | Double-layer hydrophilic gel patch for skin wound repair and preparation method thereof |
-
2021
- 2021-07-13 CN CN202110792743.7A patent/CN113440642A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115006337A (en) * | 2022-07-11 | 2022-09-06 | 广州中医药大学顺德医院(佛山市顺德区中医院) | Double-layer hydrophilic gel patch for skin wound repair and preparation method thereof |
| CN115006337B (en) * | 2022-07-11 | 2023-07-25 | 广州中医药大学顺德医院(佛山市顺德区中医院) | Double-layer hydrophilic gel patch for repairing skin wound surface and preparation method thereof |
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Application publication date: 20210928 |