CN116763973A

CN116763973A - Sanitary towel and preparation process thereof

Info

Publication number: CN116763973A
Application number: CN202211443785.0A
Authority: CN
Inventors: 刘亚军; 金春梅
Original assignee: Shanghai Shuxiao Industry Co ltd
Current assignee: Shanghai Shuxiao Industry Co ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-09-19

Abstract

The application relates to the technical field of sanitary towel preparation, and particularly discloses a sanitary towel and a preparation process thereof. The sanitary towel comprises a sanitary towel main body and protective wings positioned on two sides of the sanitary towel main body, wherein the sanitary towel main body comprises a cotton soft layer, a high-molecular water-absorbing resin layer, a hydrophobic bottom layer, release paper and an envelope which are sequentially arranged from top to bottom, and an antibacterial mixture is sprayed on the surface of the cotton soft layer to form an antibacterial layer, wherein the antibacterial mixture is mainly prepared from the following raw materials: water, surfactant, citric acid, reinforcing agent, antibacterial agent and disodium ethylenediamine disuccinate; the preparation process comprises the following steps: spraying the antibacterial mixture on the cotton soft layer to form an antibacterial layer, so as to obtain a pretreated cotton soft layer; bonding the pretreated cotton flexible layer, the macromolecule water-absorbent resin layer, the bottom layer, the release paper and the coating film to obtain a sanitary towel main body; the wings are stuck on the two sides of the sanitary towel main body. The sanitary towel prepared by the application has good antibacterial property.

Description

Sanitary towel and preparation process thereof

Technical Field

The application relates to the technical field of sanitary towel preparation, in particular to a sanitary towel and a preparation process thereof.

Background

Sanitary napkins are devices that are used to absorb blood from the vagina when a woman's menstrual flow goes to a tide and retain menstrual blood within the sanitary napkin. At present, sanitary napkins are generally divided into three layers, namely a cotton soft layer, a water absorbing layer and a hydrophobic layer, and all the layers are bonded by hot melt adhesive. The sanitary towel is particularly important for women in menstrual period, and the vagina is communicated with the external environment, so that external bacteria easily enter the vagina along the sanitary towel, and the health of the women in menstrual period is further affected.

Meanwhile, as the sanitary towel directly contacts with the mucous membrane tissues of the human body, the menstrual blood is further absorbed, rich nutrient substances exist in the menstrual blood, the menstrual blood is easy to be a culture medium for bacteria to grow, and in the process of using the sanitary towel, the sanitary towel can move, so that bacteria at different positions on the sanitary towel are easy to be transferred into the body of the female; in addition, after the bacteria in the human body are discharged outside, the bacteria are discharged to the sanitary towel, and the sanitary towel is warm and moist, so that the bacteria are greatly propagated, and diseases such as colpitis, urethritis and the like are further caused.

In the prior art, in order to improve the antibacterial effect of the sanitary towel, a plurality of prepared traditional Chinese medicines are arranged in the sanitary towel to inhibit bacteria, so that the process is complex and the effect is poor.

Disclosure of Invention

In order to improve the antibacterial property of the sanitary towel, the application provides the sanitary towel and the preparation process thereof.

In a first aspect, the present application provides a sanitary towel, which adopts the following technical scheme:

the sanitary towel is of a layered structure and comprises a sanitary towel main body and protective wings positioned on two sides of the sanitary towel main body, wherein the sanitary towel main body comprises a cotton soft layer, a high polymer absorption resin layer, a hydrophobic bottom layer, release paper and a coating film which are sequentially arranged from top to bottom, an antibacterial mixture is sprayed on the surface of the cotton soft layer to form an antibacterial layer, and the antibacterial mixture is mainly prepared from the following raw materials in parts by weight: 50-60 parts of water, 1-2 parts of surfactant, 1-2 parts of citric acid, 1-2 parts of reinforcing agent, 3-5 parts of antibacterial agent and 2-3 parts of disodium ethylenediamine disuccinate, wherein the antibacterial agent is at least two of aloe extract, nano silver and bamboo charcoal particles, and the reinforcing agent consists of chitosan, orange peel essential oil and hydroxypropyl methyl cellulose according to the mass ratio of (5-6) to (2-3) to (1-2).

Preferably, the cotton soft layer is made of pure cotton non-woven fabrics.

Preferably, the hydrophobic bottom layer is a PE film.

Preferably, the macromolecule water-absorbing resin layer is made by adopting the market or the prior art; the high molecular water-absorbing resin layer is prepared from high molecular water-absorbing resin according to a conventional process. Further preferably, the polymer absorbent resin layer of the present application is prepared by referring to patent application No. 201210579908.3 entitled "synthesis of a polymer absorbent resin for physiological hygiene".

Preferably, the release paper is a common release paper.

Preferably, the coating material is low-density polyethylene.

By adopting the technical scheme, the antibacterial mixture is sprayed on the cotton soft layer, so that the cotton soft layer is endowed with certain antibacterial property, the antibacterial mixture contains the antibacterial agent and the reinforcing agent, part of the antibacterial agent is adhered to the surface of the cotton soft layer under the action of the reinforcing agent, and part of the antibacterial agent permeates into the cotton soft layer, so that the situation that more bacteria are caused by the moist environment of the cotton soft layer when a woman uses the sanitary towel is reduced, the antibacterial property of the sanitary towel is improved, the sterilizing effect of aloe extract in the antibacterial agent is the same as that of the antibiotics, but the bacterial drug resistance is not generated, and harmful metabolites released during bacterial infection and endotoxins remained after bacteria are killed can be removed; the bamboo charcoal particles can generate negative ions and far infrared rays in the use process, and are partially disinfected and sterilized, so that the negative ions beneficial to health in the air are increased, and the internal environment of a human body is improved; the nano silver is convenient to penetrate through the cell wall and directly enter the inside of the cell so as to destroy the metabolism of the cell; the hydroxypropyl methylcellulose in the reinforcing agent has viscoelasticity, is convenient to adhere to the surfaces of aloe extract, nano silver and bamboo charcoal particles so as to adhere to the network structure of chitosan, and the chitosan and cotton fibers contain a large amount of hydroxyl groups, the amino group on the second C in the chitosan molecules is very active, and the chitosan and the cotton cellulose have environments and conditions for forming hydrogen bonds, so that the hydroxypropyl methylcellulose is adsorbed on the cotton fibers, and the antibacterial property and the durability of the sanitary towel are improved.

Preferably, the mass ratio of the antibacterial agent to the reinforcing agent is (3.5-4.5) (1.5-1.8).

By adopting the technical scheme, the mass ratio of the antibacterial agent to the reinforcing agent is optimized, so that the retention time and the retention quantity of the antibacterial agent on the cotton flexible layer are improved.

Preferably, the antibacterial agent consists of aloe extract, nano silver and bamboo charcoal particles in a mass ratio of (5-8) (2-3).

By adopting the technical scheme, the antibacterial agent is prepared by compounding three components of aloe extract, nano silver and bamboo charcoal particles, and the proportion of the three components is adjusted, so that the proportion of the three components is optimal, the aloe extract is a natural antibacterial agent, the bamboo charcoal particles can increase beneficial anions in the air, and the addition of the aloe extract and the bamboo charcoal particles is convenient for reducing the proportion of the nano silver in the antibacterial agent, so that the antibacterial property of the sanitary towel is further improved.

Preferably, the aloe extract is extracted by a microwave extraction method.

Preferably, the preparation method of the aloe extract comprises the following steps: weighing 0.5g of aloe dry powder, adding 70% ethanol water solution into a three-neck flask, adjusting the microwave power to 340W, extracting for 8min, filtering, and drying to obtain aloe extract.

By adopting the technical scheme, after the aloe leaves are subjected to microwave extraction, microwaves obviously damage cells, so that the cell walls incompletely change the permeability of cell membranes, cell organelles are damaged, the color of an aloe extract is deepened, the concentration of effective antibacterial components in the extract is higher, and the antibacterial performance of the aloe extract is further improved.

Preferably, the grain size grading of the nano silver is 35-40nm with a ratio of 35-40%,40-50nm with a ratio of 45-50%, and 50-80nm with a ratio of 5-20%.

By adopting the technical scheme, the nano silver with multiple particle sizes is used as an antibacterial agent, so that the compactness and stability of an antibacterial layer formed by the nano silver on the cotton soft layer are improved, the antibacterial stability of the cotton soft layer is further improved, and meanwhile, part of nano silver particles penetrate into the cotton soft layer, so that the antibacterial property and antibacterial durability of the cotton soft layer are further improved.

Preferably, the chitosan is carboxymethyl chitosan.

By adopting the technical scheme, the antibacterial property of the chitosan mainly comes from the substituent NH with positive electricity on the molecular chain ₃ ⁺ ，NH ₃ ⁺ Is attracted with anions such as sialyl phosphatide in the cell wall of the microorganism to prevent the metabolism and the reproduction of the microorganism. The chitosan carboxymethylation contains-COOH in the molecule, so that more amino groups can be protonated, and the number of antibacterial factors is increased; simultaneous-COO ^- And NH ₃ ⁺ The two groups can form intramolecular or intermolecular hydrogen bonds, so that the flexibility of the macromolecular chain is reduced, the molecular chain is more stretched, and NH is generated when the substitution degree is not too high ₃ ⁺ The degree of entrapment of (C) is reduced, exposed NH ₃ ⁺ Can fully act with bacteria, thereby showing stronger antibacterial activity.

Preferably, the chitosan is beta-cyclodextrin grafted chitosan-mugwort clathrate.

Preferably, the preparation method of the beta-cyclodextrin grafted chitosan-mugwort inclusion compound comprises the following steps: s1, synthesizing beta-cyclodextrin grafted chitosan: 3.0g of beta-cyclodextrin, 10mL of dimethyl sulfoxide and 10mL of isopropanol are sequentially added into a three-necked flask, 0.2mL of epichlorohydrin is dropwise added under magnetic stirring, and 25mL of 1 mol.L are immediately dropwise added ^-1 Adding 0.5g chitosan after stirring for 4.5h, continuously stirring for 4.5h, filtering, washing the filter cake with distilled water to be neutral, and carrying out vacuum drying at 50 ℃ to obtain a pale yellow powder product;

s2, preparing a beta-cyclodextrin grafted chitosan inclusion compound: 3 mg/mL of acetic acid was used as a solvent ^-1 Mugwort and 25 mg.mL ^-1 The beta-cyclodextrin grafted chitosan is dropwise added and mixed according to the volume ratio of 1:1, magnetically stirred for 6 hours, then is kept stand at the temperature of 4 ℃ for 48 hours, and then is added with 1 mol.L ^-1 Adjusting the pH value to be neutral by NaOH solution; and (3) allowing the clear light yellow solution to generate flocculent precipitate, filtering, repeatedly washing a filter cake with distilled water for many times, and drying overnight to obtain the product.

By adopting the technical scheme, the mugwort has the advantages of broad antibacterial spectrum, strong antibacterial activity and the like, but has the condition of unstable active ingredients, the chitosan is used for wrapping the mugwort so as to improve the antibacterial stability of the mugwort, and meanwhile, the beta-cyclodextrin utilizes holes thereof to wrap bacteria to form a inclusion compound, so that the bacteria are separated from contact with a nutrient source, the growth of the bacteria is inhibited, and the chitosan is comprehensively acted, thereby achieving the aims of bacteriostasis and sterilization.

Preferably, the antibacterial mixture further comprises 1-2 parts by weight of auxiliary agents, wherein the auxiliary agents are at least two of ozone oil agent, nisin and epsilon-polylysine.

By adopting the technical scheme, the ozone oil agent is used as one of the oil agents, has better water solubility, is convenient for enhancing the sterilization effect, and can effectively solve the problem that human bodies produce antibodies in the antibacterial and bacteriostatic processes because the ozone oil agent does not belong to antibiotic drugs and does not produce dependence and drug resistance; epsilon-polylysine is not only a broad-spectrum antibacterial agent, but also has high antibacterial effect; the antibacterial action of nisin is a condition that causes permeation of cell membranes, loss of nutrients and decrease of membrane potential by interfering with the normal functions of cell membranes, thereby leading to death of bacterial cells.

Preferably, the auxiliary agent consists of ozone oil, nisin and epsilon-polylysine in a mass ratio of (5-9) (1-2).

By adopting the technical scheme, the three substances of chitosan, epsilon-polylysine and nisin interact, so that the chitosan can have positive charges and can be adsorbed by negatively charged substances on cell membranes, thereby being adsorbed on microorganisms to inhibit the physiological activities of the microorganisms, and meanwhile, the chitosan can form a polymer membrane outside the cell walls of the microorganisms to prevent the microorganisms from absorbing nutrient substances; in turn, the growth and reproduction of microorganisms and the excretion of metabolic waste can be inhibited, resulting in metabolic disorders of the cells. The chitosan causes the protein on the bacterial membrane to be deleted, the ion channel on the bacterial membrane is opened, the membrane permeability is changed, nisin is positive charged positive ion, the nisin forces the potential balance inside and outside the microbial cell membrane to be disregulated, and then epsilon-polylysine enters the cell to interact with DNA, so that the bacterial cell is finally dead.

In a second aspect, the present application provides a process for preparing a sanitary napkin, which adopts the following technical scheme:

a process for preparing sanitary towel comprises the following steps,

(1) Preparing a cotton soft layer: spraying the antibacterial mixture on the cotton soft layer to form an antibacterial layer, so as to obtain a pretreated cotton soft layer;

(2) The sanitary towel main body preparation: bonding the pretreated cotton flexible layer, the macromolecule water-absorbent resin layer, the bottom layer, the release paper and the coating film to obtain a sanitary towel main body;

(3) Preparation of sanitary towel: and (3) sticking the protective wings on two sides of the sanitary towel main body prepared in the step (2).

Preferably, the antimicrobial mixture is sprayed in an amount of 200g/m ² 。

By adopting the technical scheme, the sanitary towel prepared by the application has simple preparation process, and meanwhile, the antibacterial mixture is sprayed on the cotton soft layer of the sanitary towel, so that the antibacterial layer is formed on the cotton soft layer, and the situation that the health of a user is influenced by the increase of bacteria caused by a humid environment is reduced.

In summary, the application has the following beneficial effects:

1. according to the sanitary towel, the antibacterial mixture is sprayed on the surface of the cotton soft layer of the sanitary towel to form the antibacterial layer, so that the antibacterial performance of the sanitary towel is improved, the antibacterial agent and the reinforcing agent are added into the antibacterial mixture, the antibacterial agent is convenient for improving the antibacterial property of the cotton soft layer, the reinforcing agent is convenient for improving the stability of the antibacterial layer, and meanwhile, the adhesive strength of the antibacterial layer and the cotton soft layer is improved.

2. The antibacterial mixture sprayed on the surface of the cotton flexible layer of the sanitary towel is added with the auxiliary agent, and the auxiliary agent is compounded by three components of ozone oiling agent, nisin and epsilon-polylysine, so that the antibacterial performance of the antibacterial mixture can be improved by cooperation with chitosan in the reinforcing agent, and the antibacterial performance of the sanitary towel can be further improved.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present application.

Reference numerals

1. An antimicrobial layer; 2. a cotton soft layer; 3. a high molecular water-absorbing resin layer; 4. a hydrophobic bottom layer; 5. release paper; 6. and (5) coating.

Detailed Description

The present application will be described in further detail with reference to examples.

The sanitary towel is of a layered structure and comprises a sanitary towel main body and protective wings positioned on two sides of the sanitary towel main body, wherein the sanitary towel main body comprises a cotton flexible layer 2, a high-molecular water-absorbent resin layer 3, a hydrophobic bottom layer 4, release paper 5 and an envelope 6 which are sequentially arranged from top to bottom, and an antibacterial mixture is sprayed on the surface of the cotton flexible layer 2 to form an antibacterial layer 1.

Preparation of antibacterial mixture

Preparation example 1

The antibacterial mixture of the preparation example is prepared from the following raw materials in parts by weight: 50kg of water, 1kg of surfactant, 1kg of reinforcing agent, 3kg of antibacterial agent, 1kg of citric acid and 2kg of trisodium ethylenediamine disuccinate. The reinforcing agent consists of chitosan, orange peel essential oil and hydroxypropyl methylcellulose according to the mass ratio of 5:2:1, and the antibacterial agent consists of aloe extract nano silver according to the mass ratio of 1:1. The surfactant is dodecyl glucoside, and the particle size of the nano silver is 40nm.

The preparation method of the antibacterial mixture of the preparation example comprises the following steps: mixing water, surfactant, enhancer, antiseptic, citric acid, and trisodium ethylenediamine disuccinate.

PREPARATION EXAMPLES 2 to 4

Preparation examples 2 to 4 are antibacterial mixtures with different proportions of raw material components, and the antibacterial mixture corresponding to each preparation example is prepared as shown in table 1, and the proportion unit is kg.

TABLE 1 raw material composition ratio of antibacterial mixture of preparation examples 1-4

The preparation examples 2 to 4 differ from the preparation example 1 in that: the proportions of the components of the antibacterial mixture are different, and the other components are exactly the same as those of preparation example 1.

The preparation method of the antibacterial mixture of preparation examples 2 to 4 is exactly the same as that of preparation example 1.

Preparation example 5

The present preparation example differs from preparation example 4 in that: the antibacterial agent consists of aloe extract, nano silver and bamboo charcoal particles according to the mass ratio of 5:5:2, the reinforcing agent consists of chitosan, orange peel essential oil and hydroxypropyl methylcellulose according to the mass ratio of 6:3:2, and the other components are completely the same as in preparation example 4.

The preparation method of the antibacterial mixture of this preparation example is exactly the same as that of preparation example 4.

Preparation example 6

The present preparation example differs from preparation example 5 in that: the antibacterial agent consists of aloe extract, nano silver and bamboo charcoal particles according to the mass ratio of 8:8:3, and the other components are completely the same as in preparation example 5.

The preparation method of the antibacterial mixture of this preparation example is exactly the same as that of preparation example 5.

Preparation example 7

The present preparation example differs from preparation example 6 in that: the grain size grading of the nano silver is 35-40nm with 35 percent, 40-50nm with 45 percent and 50-80nm with 20 percent. The other steps are exactly the same as in preparation example 6.

The preparation method of the antibacterial mixture of this preparation example is exactly the same as that of preparation example 6.

Preparation example 8

The antibacterial mixture of the preparation example is prepared from the following raw materials in parts by weight: 60kg of water, 2kg of surfactant, 1.8kg of reinforcing agent, 4.5kg of antibacterial agent, 2kg of citric acid, 3kg of trisodium ethylenediamine disuccinate and 1kg of auxiliary agent. The auxiliary agent consists of ozone oiling agent and nisin according to the mass ratio of 1:1, and the other components are completely the same as in preparation example 7.

The preparation method of the antibacterial mixture of the preparation example comprises the following steps: mixing water, surfactant, enhancer, antibacterial agent, adjuvant, citric acid, and trisodium ethylenediamine disuccinate.

Preparation example 9

The present preparation example differs from preparation example 8 in that: the auxiliary agent consists of ozone oiling agent, nisin and epsilon-polylysine according to the mass ratio of 9:1:1, and the other components are completely the same as those of preparation example 8.

The preparation method of the antibacterial mixture of this preparation example is exactly the same as that of preparation example 8.

Preparation example 10

The present preparation example differs from preparation example 1 in that: the chitosan is beta-cyclodextrin grafted chitosan-mugwort clathrate. The preparation method of the beta-cyclodextrin grafted chitosan-mugwort inclusion compound comprises the following steps:

s1, synthesizing beta-cyclodextrin grafted chitosan: 3.0g of beta-cyclodextrin, 10mL of dimethyl sulfoxide and 10mL of isopropanol are sequentially added into a three-necked flask, 0.2mL of epichlorohydrin is dropwise added under magnetic stirring, and 25mL of 1 mol.L are immediately dropwise added ^-1 Adding 0.5g chitosan after stirring for 4.5h, continuously stirring for 4.5h, filtering, washing the filter cake with distilled water to be neutral, and carrying out vacuum drying at 50 ℃ to obtain a pale yellow powder product;

s2, preparing a beta-cyclodextrin grafted chitosan inclusion compound: 3 mg/mL of acetic acid was used as a solvent ^-1 Mugwort and 25 mg.mL ^-1 The beta-cyclodextrin grafted chitosan is dropwise added and mixed according to the volume ratio of 1:1, magnetically stirred for 6 hours, then is kept stand at the temperature of 4 ℃ for 48 hours, and then is added with 1 mol.L ^-1 Adjusting the pH value to be neutral by NaOH solution; and (3) allowing the clear light yellow solution to generate flocculent precipitate, filtering, repeatedly washing a filter cake with distilled water for many times, and drying overnight to obtain the product. . The other steps are exactly the same as in preparation example 1.

The preparation method of the antibacterial mixture of this preparation example is exactly the same as that of preparation example 1.

PREPARATION EXAMPLE 11

The antibacterial mixture of the preparation example is prepared from the following raw materials in parts by weight: 50kg of water, 1kg of surfactant, 1kg of reinforcing agent, 1kg of citric acid and 2kg of trisodium ethylenediamine disuccinate. The other steps are exactly the same as in preparation example 1.

The preparation method of the antibacterial mixture of the preparation example comprises the following steps: mixing water, surfactant, reinforcing agent, citric acid, and trisodium ethylenediamine disuccinate.

Preparation example 12

The antibacterial mixture of the preparation example is prepared from the following raw materials in parts by weight: 50kg of water, 1kg of surfactant, 3kg of antibacterial agent, 1kg of citric acid and 2kg of trisodium ethylenediamine disuccinate.

The preparation method of the antibacterial mixture of the preparation example comprises the following steps: mixing water, surfactant, antibacterial agent, citric acid, and trisodium ethylenediamine disuccinate.

Examples

Example 1

The sanitary towel of the embodiment is of a layered structure, and comprises a sanitary towel main body and protective wings positioned on two sides of the sanitary towel main body, wherein the sanitary towel main body comprises a cotton flexible layer 2, a high-molecular water-absorbent resin layer 3, a hydrophobic bottom layer 4, release paper 5 and an envelope 6 which are sequentially arranged from top to bottom, an antibacterial mixture is sprayed on the surface of the cotton flexible layer 2 to form an antibacterial layer 1, and the antibacterial mixture is prepared by a preparation example 1.

The preparation method of the sanitary towel comprises the following steps:

Examples 2 to 10

Examples 2-10 are sanitary napkins made from a cotton flexible layer sprayed with an antimicrobial mixture made from different preparations, each sanitary napkin made from the antimicrobial mixture made in accordance with the examples, for example, as shown in Table 2.

Table 2 examples 1-10 preparation of antibacterial mixtures for sanitary napkins with sprayed cotton softening layer

Examples 2-10 differ from example 1 in that: the antibacterial mixture used to spray the cotton linter layer was prepared differently, the other being exactly the same as in example 1.

The sanitary napkins of examples 2-10 were prepared in exactly the same manner as in example 1.

Comparative example

Comparative example 1

The sanitary towel of the comparative example is of a layered structure and comprises a sanitary towel main body and protective wings positioned on two sides of the sanitary towel main body, wherein the sanitary towel main body comprises a cotton soft layer 2, a high polymer water-absorbent resin layer 3, a hydrophobic bottom layer 4, release paper 5 and an envelope 6 which are sequentially arranged from top to bottom.

The preparation method of the sanitary towel of the comparative example comprises the following steps:

(1) The sanitary towel main body preparation: bonding the cotton soft layer, the macromolecule water-absorbing resin layer, the bottom layer, the release paper and the envelope to obtain a sanitary towel main body;

(2) Preparation of sanitary towel: and (3) sticking the protective wings on two sides of the sanitary towel main body prepared in the step (2).

Comparative example 2

This comparative example differs from example 1 in that: an antibacterial mixture was prepared in preparation 11, and the other was exactly the same as in example 1.

The sanitary napkin of this comparative example was prepared in exactly the same manner as in example 1.

Comparative example 3

This comparative example differs from example 1 in that: an antibacterial mixture was prepared in preparation 12, and the other was exactly the same as in example 1.

Detection method

And (3) microbial pollution detection: the sanitary napkins prepared in examples 1 to 10 and comparative examples 1 to 3 were tested for microbial contamination according to the test method in GB15979-2002 sanitary Standard for Disposable sanitary articles, and the total number of microbial bacterial colonies was equal to or less than 200 (CFU/g), and the test results are shown in Table 3.

Antibacterial property detection test: sanitary napkins prepared in examples 1 to 10 and comparative examples 1 to 3 were tested for antibacterial activity according to the test method of GB15979-2002 sanitary Standard for Disposable sanitary articles, and the test results are shown in Table 3.

TABLE 3 results of performance measurements for sanitary napkins of examples 1-10 and comparative examples 1-3

Sequence number	Antibacterial rate%	Bacterial colony count (CFU/g)
			Example 1	98.1	28
Example 2	98.5	26
			Example 3	98.3	27
Example 4	98.6	25
			Example 5	98.9	23
Example 6	99.1	21
			Example 7	99.4	18
Example 8	99.6	13
			Example 9	99.9	11
Example 10	98.5	24
			Comparative example 1	0	/
Comparative example 2	90.1	100
			Comparative example 3	92.3	80

As can be seen from the combination of example 1 and comparative examples 1 to 3 and the combination of Table 3, the sanitary napkin of example 1 has a higher antibacterial rate than that of comparative examples 1 to 3, the total number of bacterial colonies on the sanitary napkin of example 1 is smaller than that of comparative examples 2 to 3, and the antibacterial mixture is sprayed on the cotton flexible layer of the sanitary napkin in example 1, so that the sanitary napkin is endowed with a higher antibacterial rate, and the reinforcing agent and the antibacterial agent are added in the antibacterial mixture of example 1, so that the permeability of the antibacterial agent in the cotton flexible layer is enhanced, and meanwhile, the stability of the antibacterial layer is improved, and the antibacterial rate of the sanitary napkin is further improved.

As can be seen from the combination of examples 1 to 4 and the combination of Table 3, the antibacterial mixture is sprayed on the surface of the soft layer of the sanitary towel to form an antibacterial layer, and the proportion of each component of the antibacterial mixture is adjusted, so that the antibacterial rate of examples 1 to 4 is changed, and the antibacterial performance of the sanitary towel is improved.

In combination with examples 4-6 and table 3, it can be seen that, compared with example 4, the antibacterial rate of examples 5-6 is higher than that of example 4, the total bacterial colony count of examples 5-6 is smaller than that of example 4, the antibacterial agent in examples 5-6 is compounded by aloe extract, nano silver and bamboo charcoal particles, and all three components of aloe extract, nano silver and bamboo charcoal particles have antibacterial property, aloe extract is natural antibacterial agent, bamboo charcoal particles can increase beneficial anions in air, and the addition of aloe extract and bamboo charcoal particles is convenient for reducing the ratio of nano silver in the antibacterial agent, so that the antibacterial rate of the sanitary towel is convenient to improve.

As can be seen by combining examples 6-7 and Table 3, the antibacterial rate of example 7 is greater than that of example 6, the total bacterial colony count of example 7 is smaller than that of example 6, and nano silver with different particle diameters is adopted in example 7, so that the compactness and stability of the antibacterial layer are improved, and the antibacterial property of the sanitary towel is further improved.

By combining examples 7-9 and combining Table 3, it can be seen that the antibacterial rate of examples 8-9 is greater than that of example 7, and the antibacterial mixture of examples 8-9 is added with an auxiliary agent, wherein the auxiliary agent is compounded by ozone oil, nisin and epsilon-polylysine, the ozone oil can enhance the sterilizing effect of the antibacterial agent, and nisin and epsilon-polylysine are combined with chitosan in the reinforcing agent, so that the antibacterial rate of the antibacterial layer is further improved, and the antibacterial rate of the sanitary towel is further improved.

By combining example 1 and example 10 and combining table 3, it can be seen that the antibacterial rate of example 10 is greater than that of example 1, in example 10, chitosan is modified, mugwort is added inside the chitosan, cyclodextrin is wrapped outside the chitosan, so that the antibacterial property of the chitosan is further improved, the mildness of an antibacterial layer formed by the antibacterial mixture on the surface of the cotton flexible layer is improved, and the stimulation intensity to vagina is reduced.

The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.

Claims

1. The utility model provides a sanitary towel, is the lamellar structure, includes sanitary towel main part and the flap that is located the sanitary towel main part both sides, its characterized in that: the sanitary towel main body comprises a cotton soft layer (2), a macromolecule water-absorbent resin layer (3), a hydrophobic bottom layer (4), release paper (5) and an envelope (6) which are sequentially arranged from top to bottom, wherein an antibacterial mixture is sprayed on the surface of the cotton soft layer (2) to form an antibacterial layer (1), and the antibacterial mixture is mainly prepared from the following raw materials in parts by weight: 50-60 parts of water, 1-2 parts of surfactant, 1-2 parts of citric acid, 1-2 parts of reinforcing agent, 3-5 parts of antibacterial agent and 2-3 parts of disodium ethylenediamine disuccinate, wherein the antibacterial agent is at least two of aloe extract, nano silver and bamboo charcoal particles, and the reinforcing agent consists of chitosan, orange peel essential oil and hydroxypropyl methyl cellulose according to the mass ratio of (5-6) to (2-3) to (1-2).

2. A sanitary napkin as claimed in claim 1, wherein: the mass ratio of the antibacterial agent to the reinforcing agent is (3.5-4.5) to (1.5-1.8).

3. A sanitary napkin as claimed in claim 1, wherein: the antibacterial agent consists of aloe extract, nano silver and bamboo charcoal particles according to the mass ratio of (5-8) to (2-3).

4. A sanitary napkin as claimed in claim 3, wherein: the aloe extract is extracted by a microwave extraction method.

5. A sanitary napkin as claimed in claim 3, wherein: the grain size grading of the nano silver is 35-40nm with a proportion of 35-40%,40-50nm with a proportion of 45-50% and 50-80nm with a proportion of 5-20%.

6. A sanitary napkin as claimed in claim 1, wherein: the chitosan is carboxymethyl chitosan.

7. A sanitary napkin as claimed in claim 1, wherein: the chitosan is beta-cyclodextrin grafted chitosan-mugwort inclusion compound.

8. A sanitary napkin as claimed in claim 1, wherein: the antibacterial mixture also comprises 1-2 parts by weight of auxiliary agents, wherein the auxiliary agents are at least two of ozone oiling agent, nisin and epsilon-polylysine.

9. A sanitary napkin as claimed in claim 8, wherein: the auxiliary agent consists of ozone oil, nisin and epsilon-polylysine according to the mass ratio of (5-9) (1-2).

10. A process for the preparation of a sanitary napkin according to any one of claims 1 to 9, wherein: comprises the following steps of the method,