CN114288090A - Preparation method of disposable hygienic product with oxygen slow release function - Google Patents
Preparation method of disposable hygienic product with oxygen slow release function Download PDFInfo
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Abstract
The invention relates to the field of sanitary products, and provides a preparation method of a disposable sanitary product with an oxygen slow release function, which overcomes the defects that an article with an oxygen release function in the prior art is easy to generate dust flying in the preparation process and the prepared article is easy to absorb moisture and has a short shelf life.
Description
Technical Field
The invention relates to the field of sanitary products, in particular to a preparation method of a disposable sanitary product with an oxygen slow release function.
Background
The skin of the infant is thin, and the skin has high water content and is delicate. The part of the diaper pants wrapped by the diaper pants is easy to cause symptoms of diaper rash such as flushing, rash, ulceration, infection and the like on the skin under the conditions of salts, bacteria and friction of human excrement and a relatively moist and closed environment. The topical oxygen therapy has significant effect in treating diaper rash, and can promote healing when the diaper rash is exposed to high concentration oxygen. Oxygen is a nutrient for the survival of all multicellular organisms, can regulate cell activities, promote collagen synthesis and angiogenesis in the processes of tissue repair and wound healing, and can cause cell function loss and apoptosis due to long-term hypoxia of tissues, thereby hindering tissue repair and wound healing.
Chinese patent application No. 200910203193.X discloses an active oxygen slow-release sanitary towel and an active oxygen slow-release agent, wherein the sanitary towel sequentially comprises a net surface layer, a flow guide layer, an active oxygen slow-release agent layer, an absorption layer and a bottom layer from a surface layer to the bottom layer, and the active oxygen slow-release agent layer is activated when meeting menstrual blood, sweat and urine moisture, slowly releases active oxygen, so that anaerobic bacteria are suffocated and die. However, since the active oxygen slow-release agent layer is in a powder shape, dust is easily blown in the adding process, certain influence is caused on the surrounding environment, and the body of an operator is easily damaged.
Chinese patent publication No. CN201910389074.1 discloses an oxygen-releasing hydrogel dressing, which uses acrylamide and its derivatives as hydrogel, potassium iodide as oxygen-releasing catalyst, glucose and glucose oxidase produce gluconic acid and hydrogen peroxide under aerobic condition, and hydrogen peroxide and potassium iodide act to generate oxygen, water and iodine simple substance. It releases oxygen, but the final product is a gel and is not suitable for use in disposable hygiene products.
Chinese patent publication No. CN201020132645.8 discloses a mask containing peroxide oxygen releasing body, wherein peroxide is pressed by two layers of fabrics, a water outlet bag is arranged above the peroxide, and the water outlet bag is used for trial use, so that the water storage bag is cracked to release moisture to react with the peroxide to release oxygen.
Chinese patent publication No. CN201910389533.6 discloses a hydrogel dressing with excellent mechanical properties and oxygen release function and a preparation method thereof, wherein acrylamide and derivatives thereof are utilized to react with a cross-linking agent under the action of an initiator to form a three-dimensional hydrogel material with excellent mechanical properties.
Chinese patent publication No. CN202110614877.X discloses a preparation method of oxygen sustained-release microspheres with peroxide dispersed in degradable biological material and a medicament.
Chinese patent publication No. CN201710773730.9 discloses a mask inner core with oxygen slow release function, the inner core is a multilayer structure, comprising an inner layer, a middle structure and an outer layer, the middle structure is composed of an oxygen generating agent supporting framework and an oxygen slow release material; the inner layer is provided with air holes, and the outer layer is provided with a moisture-proof material.
Chinese patent publication No. CN201610229170.6 discloses a slow-release oxidant using calcium peroxide as a matrix and ethyl cellulose as a coating and a preparation method thereof.
Chinese patent publication No. CN201911390687.3 discloses a controllable self-crosslinking oxygen-releasing hydrogel composition, wherein a chemical reaction can be triggered to occur when a gel formed by a component A and a component B contacts with each other, a catalyst of the component A catalyzes a hydrogen peroxide source of the component B to decompose and react to release oxygen and oxygen, the self-crosslinking time, the hydrogel strength, the hydrogel air permeability and the like of the self-crosslinking hydrogel are regulated and controlled by controlling the proportion of chitosan and/or derivatives thereof and macromolecular crosslinking agents in the component A and the component B in a system, and the oxygen release rate and the oxygen release amount of the oxygen are regulated by controlling the proportion of the catalyst in the component A and the hydrogen peroxide source in the component B.
The products capable of releasing oxygen disclosed by the prior art comprise articles such as masks, gel stickers and sanitary towels, and the articles exposed in the air can react with moisture in the air, so that the articles are easy to deteriorate and have short shelf life. Furthermore, substances capable of releasing oxygen are often powdery, and are prone to powder flying on a production line for high-speed production, and are not environment-friendly.
Disclosure of Invention
Therefore, aiming at the problems, the invention provides a preparation method of a disposable hygienic product with an oxygen slow release function, which solves the defects that in the prior art, an article with an oxygen release function is easy to generate dust flying in the preparation process, and the prepared article is easy to absorb moisture and has a short shelf life.
In order to achieve the purpose, the invention adopts the following technical scheme: a preparation method of a disposable sanitary product with an oxygen slow-release function comprises the steps of preparing a liquid-permeable surface layer, preparing an absorption core, preparing a liquid-impermeable bottom layer and compositing the materials into a whole and then cutting the materials into single products, wherein the preparation method of the absorption core comprises the following steps:
(1) preparing surface layer non-woven fabric: applying film-forming slurry into non-woven fabric, making pits by a compression roller, and drying, wherein the film-forming slurry comprises 3-5 parts by weight of PVP, 1-2 parts by weight of PVA and 100 parts by weight of deionized water, and the preparation process of the film-forming slurry comprises the following steps: blending PVP, PVA and deionized water, and continuously stirring for 2 hours in a constant-temperature water bath kettle at the temperature of 85-95 ℃ to obtain a uniform PVP/PVA mixed solution;
(2) selecting oxygen slow release functional materials: selecting metal peroxide as an oxygen slow-release functional material;
(3) preparing a bottom layer non-woven fabric: applying the film-forming slurry into the non-woven fabric, and drying to obtain the bottom non-woven fabric;
(4) the surface non-woven fabric prepared in the step (1) is transmitted on line, hot melt adhesive is sprayed on the surface of the surface non-woven fabric, the oxygen release functional material prepared in the step (2) is broadcasted on the surface of the surface non-woven fabric, meanwhile, the bottom non-woven fabric prepared in the step (3) is transmitted on line, adhesive is sprayed on the bottom surface of the bottom non-woven fabric, and the bottom non-woven fabric and the surface non-woven fabric broadcasted with the oxygen release functional material are compounded on line;
(5) and (4) spraying the high molecular water-absorbing resin on the surface of the product prepared in the step (4) on line, and compounding a coating layer on line.
The further improvement is that: in the step (1), the film-forming slurry is applied to the non-woven fabric by two-dipping and two-rolling.
The further improvement is that: the surface layer non-woven fabric is SMS non-woven fabric.
The further improvement is that: the bottom layer non-woven fabric is an SMS non-woven fabric.
The further improvement is that: the spreading amount of the oxygen release functional material in the step (4) is 7-10 g/m2。
The further improvement is that: the metal peroxide is one or a mixture of more than two of calcium peroxide, sodium peroxide or magnesium peroxide in any ratio.
In a further improvement, the step of preparing the liquid-permeable top layer comprises: (1) preparing a film forming agent: selecting 3-5 parts by weight of PVP, 1-2 parts by weight of PVA and 100 parts by weight of deionized water as raw materials of a film forming agent, wherein the preparation process of the film forming agent is as follows: blending PVP, PVA and deionized water, and continuously stirring for 2 hours in a constant-temperature water bath kettle at the temperature of 85-95 ℃ to obtain a uniform PVP/PVA mixed solution; (2) preparing antibacterial oxygen release slurry: adding 5-8 parts of zinc oxide and 5-10 parts of calcium peroxide into the PVP/PVA mixed solution prepared in the step (1), continuously stirring for 1h, and then ultrasonically oscillating for 30-40 min to uniformly disperse the zinc oxide and the calcium peroxide into the solution while keeping tiny particle sizes and form a shell-sphere structure coated by the PVP-PVA, wherein the rest PVP and PVA are used for dispersing, thickening and film forming; (3) preparing the antibacterial oxygen-release non-woven fabric: and (3) dipping the hydrophilic SMS non-woven fabric into the antibacterial oxygen release slurry prepared in the step (2) through a feeding roller set, extruding redundant slurry through a compression roller, dipping the antibacterial oxygen release slurry prepared in the step (2) into the feeding roller set again, extruding redundant slurry through the compression roller, and then conveying the slurry into an oven for drying in an online manner.
The further improvement is that: the drying temperature is controlled to be 75-85 ℃, and the drying time is controlled to be 1-1.2 h.
The further improvement is that: the material loading roller set is composed of a liquid absorption concave roller and a barbed film convex roller, grooves are uniformly formed in the liquid absorption concave roller at intervals along the circumferential side face, bulges matched with the grooves are uniformly formed in the barbed film convex roller at intervals along the circumferential side face, v-shaped barbed knives are arranged on the surfaces of the bulges, the antibacterial oxygen release slurry is placed in a liquid storage tank below the liquid absorption concave roller, and at least 1/3 of the liquid absorption concave roller is soaked in the antibacterial oxygen release slurry.
The further improvement is that: the width of the opening end of the groove is smaller than that of the bottom of the groove.
By adopting the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the oxygen release materials are arranged in the liquid-permeable surface layer and the absorption core, so that oxygen can be slowly released after the liquid-permeable surface layer and the absorption core are contacted with liquid, and the release duration of oxygen is up to more than 2.5 h.
2. The absorption core adopts the non-woven fabrics treated by a special process as the wrapping layer wrapping the oxygen release functional material, and granular articles are easily adsorbed on the surface of the absorption core, so that the granular oxygen release functional material can be stably supported by the surface layer non-woven fabrics and the bottom layer non-woven fabrics.
3. The film forming slurry for the dip-binding treatment of the surface non-woven fabric and the bottom non-woven fabric is compounded by PVP and PVA, the PVP has good film forming property, is easy to adsorb solids to form a spherical shell to form a film and is non-toxic, but the film formed by the PVP is hard, and the PVA compounding is adopted in the invention, so that the flexibility of the formed film is improved.
4. The non-woven fabric of the liquid permeability surface layer is subjected to specific treatment, namely, the dipping treatment of antibacterial oxygen release slurry, the antibacterial oxygen release slurry contains zinc oxide with spectrum antibacterial property and calcium peroxide capable of releasing oxygen, has an antibacterial effect, and simultaneously can protect calcium peroxide particles in the non-woven fabric due to the fact that the calcium peroxide can form insoluble calcium hydroxide when contacting water, so that the function of slowly releasing oxygen is realized.
5. The feeding roller set with a specific structure is adopted to release the antibacterial oxygen release slurry to the surface of the non-woven fabric, so that the antibacterial oxygen release slurry can be effectively released to the non-woven fabric, and the production efficiency is high. The feeding roller set comprises a liquid absorption concave roller and a barbed film convex roller, grooves are uniformly arranged on the liquid absorption concave roller at intervals along the circumferential side face, protrusions matched with the grooves are uniformly arranged on the barbed film convex roller at intervals along the circumferential side face, v-shaped barbed knives are arranged on the surfaces of the protrusions, the antibacterial oxygen release slurry is placed in a liquid storage tank below the liquid absorption concave roller, at least 1/3 of the liquid absorption concave roller is soaked in the antibacterial oxygen release slurry, the antibacterial oxygen release slurry is filled into the grooves when the liquid absorption concave roller rotates, and when the liquid absorption concave roller rotates to the position below the non-woven fabric, the barbed knives on the barbed film convex roller matched with the liquid absorption concave roller apply pressure to the film-shaped antibacterial oxygen release slurry in the grooves, so that the slurry is released onto the non-woven fabric more quickly.
Drawings
FIG. 1 is a schematic view of a process for preparing an antibacterial oxygen-releasing nonwoven fabric according to a first embodiment of the present invention;
FIG. 2 is a schematic view of a liquid-absorbing concave roller according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a film-piercing convex roller according to an embodiment of the invention.
Detailed Description
The embodiment of the invention is as follows:
referring to fig. 1 to 3, a method for manufacturing a disposable sanitary napkin having an oxygen sustained-release function includes the steps of preparing a liquid-permeable top sheet, preparing an absorbent core, preparing a liquid-impermeable back sheet, and combining the above materials into a single body and cutting the same into individual articles;
the preparation steps of the liquid-permeable surface layer comprise: (1) preparing a film forming agent: selecting 3 parts by weight of PVP, 1 part by weight of PVA and 100 parts by weight of deionized water as raw materials of a film forming agent, wherein the preparation process of the film forming agent is as follows: blending PVP, PVA and deionized water, and continuously stirring for 2 hours in a constant-temperature water bath kettle at 85 ℃ to obtain a uniform PVP/PVA mixed solution; (2) preparing antibacterial oxygen release slurry: adding 5 parts of zinc oxide and 5 parts of calcium peroxide into the PVP/PVA mixed solution prepared in the step (1), continuously stirring for 1h, and then ultrasonically oscillating for 30min to ensure that the zinc oxide and the calcium peroxide keep tiny particle sizes and are uniformly dispersed in the solution and form a shell-sphere structure coated by the PVP-PVA, wherein the rest PVP and PVA are used for dispersing, thickening and film forming; (3) preparing the antibacterial oxygen-release non-woven fabric: and (3) dipping the hydrophilic SMS non-woven fabric into the antibacterial oxygen release slurry prepared in the step (2) through a feeding roller set, extruding redundant slurry through a compression roller, dipping the antibacterial oxygen release slurry prepared in the step (2) through the feeding roller set again, extruding redundant slurry through the compression roller, and then conveying the slurry into an oven for drying in an online manner, wherein the drying temperature is controlled to be 75 ℃, and the drying time is controlled to be 1.2 hours.
The material loading roller set is concave by the imbibition, 1 and thorn membrane bulge loop 2 constitute, imbibition concave roller 1 is equipped with recess 11 along the even interval of circumference side, thorn membrane bulge loop 2 is equipped with along the even interval of circumference side with recess 11 assorted arch 21, bellied surface is equipped with v type bayonet 22, antibiotic oxygen release thick liquids are placed in the below reservoir of imbibition concave roller, imbibition concave roller has 1/3 to soak in antibiotic oxygen release thick liquids. The width of the opening end of the groove is smaller than that of the bottom of the groove, namely the groove is of a trapezoidal structure on the whole.
The preparation of the absorbent core comprises the following steps:
(1) preparing surface layer non-woven fabric: applying film forming slurry into an SMS non-woven fabric in a two-dipping and two-rolling mode, manufacturing pits through a compression roller, and drying, wherein the film forming slurry consists of 3 parts by weight of PVP, 1 part by weight of PVA and 100 parts by weight of deionized water, and the preparation process of the film forming slurry is as follows: blending PVP, PVA and deionized water, and continuously stirring for 2 hours in a constant-temperature water bath kettle at 85 ℃ to obtain a uniform PVP/PVA mixed solution;
(2) selecting oxygen slow release functional materials: calcium peroxide is selected as an oxygen slow release functional material;
(3) preparing a bottom layer non-woven fabric: applying the film-forming slurry into the SMS non-woven fabric, and drying to obtain a bottom non-woven fabric;
(4) the surface non-woven fabric prepared in the step (1) is transmitted on line, hot melt adhesive is sprayed on the surface of the surface non-woven fabric, the oxygen release functional material prepared in the step (2) is broadcasted on the surface of the surface non-woven fabric, meanwhile, the bottom non-woven fabric prepared in the step (3) is transmitted on line, adhesive is sprayed on the bottom surface of the bottom non-woven fabric, and the bottom non-woven fabric and the surface non-woven fabric broadcasted with the oxygen release functional material are compounded on line; the spreading amount of the oxygen release functional material is 7g/m2；
(5) And (4) spraying the high molecular water-absorbing resin on the surface of the product prepared in the step (4) on line, and compounding a coating layer on line.
Example two
A preparation method of a disposable sanitary towel with an oxygen slow-release function comprises the preparation steps of preparing a liquid-permeable surface layer, preparing an absorption core, preparing a liquid-impermeable bottom layer and compositing the materials into a whole and then cutting the materials into single products;
the preparation steps of the liquid-permeable surface layer comprise: (1) preparing a film forming agent: selecting 45 parts by weight of PVP, 1.5 parts by weight of PVA and 100 parts by weight of deionized water as raw materials of a film forming agent, wherein the preparation process of the film forming agent is as follows: blending PVP, PVA and deionized water, and continuously stirring for 2 hours in a constant-temperature water bath kettle at 90 ℃ to obtain a uniform PVP/PVA mixed solution; (2) preparing antibacterial oxygen release slurry: adding 6 parts of zinc oxide and 8 parts of calcium peroxide into the PVP/PVA mixed solution prepared in the step (1), continuously stirring for 1h, and then ultrasonically oscillating for 35min to ensure that the zinc oxide and the calcium peroxide keep tiny particle sizes and are uniformly dispersed in the solution and form a shell-sphere structure coated by the PVP-PVA, wherein the rest PVP and PVA are used for dispersing, thickening and film forming; (3) preparing the antibacterial oxygen-release non-woven fabric: and (3) dipping the hydrophilic SMS non-woven fabric into the antibacterial oxygen release slurry prepared in the step (2) through a feeding roller set, extruding redundant slurry through a compression roller, dipping the antibacterial oxygen release slurry prepared in the step (2) through the feeding roller set again, extruding redundant slurry through the compression roller, and then conveying the slurry into an oven for drying in an online manner, wherein the drying temperature is controlled at 80 ℃, and the drying time is controlled at 1.1 h.
The structure of the feeding roller group is the same as that of the first embodiment.
The preparation of the absorbent core comprises the following steps:
(1) preparing surface layer non-woven fabric: applying a film forming slurry into an SMS non-woven fabric in a two-dipping and two-rolling mode, manufacturing pits through a compression roller, and drying, wherein the film forming slurry consists of 4 parts by weight of PVP, 1.5 parts by weight of PVA and 100 parts by weight of deionized water, and the preparation process of the film forming slurry comprises the following steps: blending PVP, PVA and deionized water, and continuously stirring for 2 hours in a constant-temperature water bath kettle at 90 ℃ to obtain a uniform PVP/PVA mixed solution;
(2) selecting oxygen slow release functional materials: calcium peroxide is selected as an oxygen slow release functional material;
(3) preparing a bottom layer non-woven fabric: applying the film-forming slurry into the SMS non-woven fabric, and drying to obtain a bottom non-woven fabric;
(4) the surface non-woven fabric prepared in the step (1) is transmitted on line, hot melt adhesive is sprayed on the surface of the surface non-woven fabric, the oxygen release functional material prepared in the step (2) is broadcasted on the surface of the surface non-woven fabric, meanwhile, the bottom non-woven fabric prepared in the step (3) is transmitted on line, adhesive is sprayed on the bottom surface of the bottom non-woven fabric, and the bottom non-woven fabric and the surface non-woven fabric broadcasted with the oxygen release functional material are compounded on line; the spreading amount of the oxygen release functional material is 8g/m2；
(5) And (4) spraying the high molecular water-absorbing resin on the surface of the product prepared in the step (4) on line, and compounding a coating layer on line.
EXAMPLE III
A preparation method of a disposable sanitary towel with an oxygen slow-release function comprises the preparation steps of preparing a liquid-permeable surface layer, preparing an absorption core, preparing a liquid-impermeable bottom layer and compositing the materials into a whole and then cutting the materials into single products;
the preparation steps of the liquid-permeable surface layer comprise: (1) preparing a film forming agent: selecting 4 parts by weight of PVP, 2 parts by weight of PVA and 100 parts by weight of deionized water as raw materials of a film forming agent, wherein the preparation process of the film forming agent is as follows: blending PVP, PVA and deionized water, and continuously stirring for 2 hours in a constant-temperature water bath kettle at 95 ℃ to obtain a uniform PVP/PVA mixed solution; (2) preparing antibacterial oxygen release slurry: adding 6 parts of zinc oxide and 8 parts of calcium peroxide into the PVP/PVA mixed solution prepared in the step (1), continuously stirring for 1h, and then ultrasonically oscillating for 35min to ensure that the zinc oxide and the calcium peroxide keep tiny particle sizes and are uniformly dispersed in the solution and form a shell-sphere structure coated by the PVP-PVA, wherein the rest PVP and PVA are used for dispersing, thickening and film forming; (3) preparing the antibacterial oxygen-release non-woven fabric: and (3) dipping the hydrophilic SMS non-woven fabric into the antibacterial oxygen release slurry prepared in the step (2) through a feeding roller set, extruding redundant slurry through a compression roller, dipping the antibacterial oxygen release slurry prepared in the step (2) through the feeding roller set again, extruding redundant slurry through the compression roller, and then conveying the slurry into an oven for drying in an online manner, wherein the drying temperature is controlled at 80 ℃, and the drying time is controlled at 1.1 h.
The structure of the feeding roller group is the same as that of the first embodiment.
The preparation of the absorbent core comprises the following steps:
(1) preparing surface layer non-woven fabric: applying film forming slurry into an SMS non-woven fabric in a two-dipping and two-rolling mode, manufacturing pits through a compression roller, and drying, wherein the film forming slurry consists of 5 parts by weight of PVP, 2 parts by weight of PVA and 100 parts by weight of deionized water, and the preparation process of the film forming slurry is as follows: blending PVP, PVA and deionized water, and continuously stirring for 2 hours in a constant-temperature water bath kettle at 95 ℃ to obtain a uniform PVP/PVA mixed solution;
(2) selecting oxygen slow release functional materials: calcium peroxide is selected as an oxygen slow release functional material;
(3) preparing a bottom layer non-woven fabric: applying the film-forming slurry into the SMS non-woven fabric, and drying to obtain a bottom non-woven fabric;
(4) the surface non-woven fabric prepared in the step (1) is transmitted on line, hot melt adhesive is sprayed on the surface of the surface non-woven fabric, the oxygen release functional material prepared in the step (2) is broadcasted on the surface of the surface non-woven fabric, meanwhile, the bottom non-woven fabric prepared in the step (3) is transmitted on line, adhesive is sprayed on the bottom surface of the bottom non-woven fabric, and the bottom non-woven fabric and the surface non-woven fabric broadcasted with the oxygen release functional material are compounded on line;the spreading amount of the oxygen release functional material is 10g/m2；
(5) And (4) spraying the high molecular water-absorbing resin on the surface of the product prepared in the step (4) on line, and compounding a coating layer on line.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A preparation method of disposable sanitary products with oxygen slow release function comprises the steps of preparing a liquid-permeable surface layer, preparing an absorption core, preparing a liquid-impermeable bottom layer and compositing the materials into a whole and then cutting the materials into single products, and is characterized in that the preparation method of the absorption core comprises the following steps:
(1) preparing surface layer non-woven fabric: applying film-forming slurry into non-woven fabric, making pits by a compression roller, and drying, wherein the film-forming slurry comprises 3-5 parts by weight of PVP, 1-2 parts by weight of PVA and 100 parts by weight of deionized water, and the preparation process of the film-forming slurry comprises the following steps: blending PVP, PVA and deionized water, and continuously stirring for 2 hours in a constant-temperature water bath kettle at the temperature of 85-95 ℃ to obtain a uniform PVP/PVA mixed solution;
(2) selecting oxygen slow release functional materials: selecting metal peroxide as an oxygen slow-release functional material;
(3) preparing a bottom layer non-woven fabric: applying the film-forming slurry into the non-woven fabric, and drying to obtain the bottom non-woven fabric;
(4) the surface non-woven fabric prepared in the step (1) is transmitted on line, hot melt adhesive is sprayed on the surface of the surface non-woven fabric, the oxygen release functional material prepared in the step (2) is broadcasted on the surface of the surface non-woven fabric, meanwhile, the bottom non-woven fabric prepared in the step (3) is transmitted on line, adhesive is sprayed on the bottom surface of the bottom non-woven fabric, and the bottom non-woven fabric and the surface non-woven fabric broadcasted with the oxygen release functional material are compounded on line;
(5) and (4) spraying the high molecular water-absorbing resin on the surface of the product prepared in the step (4) on line, and compounding a coating layer on line.
2. The method for preparing a disposable hygienic article having an oxygen slow-release function according to claim 1, wherein the method comprises the following steps: in the step (1), the film-forming slurry is applied to the non-woven fabric by two-dipping and two-rolling.
3. The method for preparing a disposable hygienic article having an oxygen slow-release function according to claim 1, wherein the method comprises the following steps: the surface layer non-woven fabric is SMS non-woven fabric.
4. The method for preparing a disposable hygienic article having an oxygen slow-release function according to claim 1, wherein the method comprises the following steps: the bottom layer non-woven fabric is an SMS non-woven fabric.
5. The method for preparing a disposable hygienic article having an oxygen slow-release function according to claim 1, wherein the method comprises the following steps: the spreading amount of the oxygen release functional material in the step (4) is 7-10 g/m2。
6. The method for preparing a disposable hygienic article having an oxygen slow-release function according to claim 1, wherein the method comprises the following steps: the metal peroxide is one or a mixture of more than two of calcium peroxide, sodium peroxide or magnesium peroxide in any ratio.
7. The method for preparing a disposable hygienic article having an oxygen release function according to claim 1, wherein the step of preparing the liquid-permeable top layer comprises: (1) preparing a film forming agent: selecting 3-5 parts by weight of PVP, 1-2 parts by weight of PVA and 100 parts by weight of deionized water as raw materials of a film forming agent, wherein the preparation process of the film forming agent is as follows: blending PVP, PVA and deionized water, and continuously stirring for 2 hours in a constant-temperature water bath kettle at the temperature of 85-95 ℃ to obtain a uniform PVP/PVA mixed solution; (2) preparing antibacterial oxygen release slurry: adding 5-8 parts of zinc oxide and 5-10 parts of calcium peroxide into the PVP/PVA mixed solution prepared in the step (1), continuously stirring for 1h, and then ultrasonically oscillating for 30-40 min to uniformly disperse the zinc oxide and the calcium peroxide into the solution while keeping tiny particle sizes and form a shell-sphere structure coated by the PVP-PVA, wherein the rest PVP and PVA are used for dispersing, thickening and film forming; (3) preparing the antibacterial oxygen-release non-woven fabric: and (3) dipping the hydrophilic SMS non-woven fabric into the antibacterial oxygen release slurry prepared in the step (2) through a feeding roller set, extruding redundant slurry through a compression roller, dipping the antibacterial oxygen release slurry prepared in the step (2) into the feeding roller set again, extruding redundant slurry through the compression roller, and then conveying the slurry into an oven for drying in an online manner.
8. The method for preparing a disposable hygienic article having an oxygen release function according to claim 7, wherein: the drying temperature is controlled to be 75-85 ℃, and the drying time is controlled to be 1-1.2 h.
9. The method for preparing a disposable hygienic article having an oxygen release function according to claim 7, wherein: the material loading roller set is composed of a liquid absorption concave roller and a barbed film convex roller, grooves are uniformly formed in the liquid absorption concave roller at intervals along the circumferential side face, bulges matched with the grooves are uniformly formed in the barbed film convex roller at intervals along the circumferential side face, v-shaped barbed knives are arranged on the surfaces of the bulges, the antibacterial oxygen release slurry is placed in a liquid storage tank below the liquid absorption concave roller, and at least 1/3 of the liquid absorption concave roller is soaked in the antibacterial oxygen release slurry.
10. The method for preparing a disposable hygienic article having an oxygen release function according to claim 9, wherein: the width of the opening end of the groove is smaller than that of the bottom of the groove.
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