Antibacterial layer and method for producing same, and absorbent article and method for producing same
阅读说明:本技术 抑菌层及其制造方法、吸收用品及其制造方法 (Antibacterial layer and method for producing same, and absorbent article and method for producing same ) 是由 张小莲 张涛 于 2018-09-11 设计创作,主要内容包括:本发明公开了一种抑菌层及其制造方法、吸收用品及其制造方法,该抑菌层用于吸收用品,包括:基层;抑菌组合物,设置在基层上,按质量百分比计,包括壳聚糖20-91%和醋酸9.9-80%,壳聚糖的脱乙酰度为60-95%,分子量为2000-500000;其中,抑菌层的pH值小于或等于6;抑菌层对大肠杆菌8099的抑菌率差值为大于等于36%;抑菌层对绿脓杆菌的抑菌差值率为大于等于97%。通过上述方式,本申请的抑菌层有明显的抑菌作用,且pH值接近人体皮肤,能够减少对皮肤的刺激性。(The invention discloses a bacteriostatic layer and a manufacturing method thereof, an absorption article and a manufacturing method thereof, wherein the bacteriostatic layer is used for the absorption article and comprises the following components: a base layer; the bacteriostatic composition is arranged on the base layer and comprises 20-91% of chitosan and 9.9-80% of acetic acid by mass percent, wherein the deacetylation degree of the chitosan is 60-95%, and the molecular weight is 2000-500000; wherein the pH value of the antibacterial layer is less than or equal to 6; the difference of the bacteriostasis rate of the bacteriostasis layer to the escherichia coli 8099 is more than or equal to 36 percent; the bacteriostasis difference rate of the bacteriostasis layer to the pseudomonas aeruginosa is more than or equal to 97 percent. In this way, the antibacterial layer of this application has obvious bacteriostatic action, and pH value is close human skin, can reduce the irritability to skin.)
1. A bacteriostatic layer for use in an absorbent article, comprising:
a base layer;
the bacteriostatic composition is arranged on the base layer and comprises 20-91% of chitosan and 9.9-80% of acetic acid by mass percent, wherein the deacetylation degree of the chitosan is 60-95%, and the molecular weight is 2000-500000;
wherein the pH value of the antibacterial layer is less than or equal to 6.
2. The bacteriostatic layer according to claim 1,
the deacetylation degree of the chitosan is greater than or equal to 70%, and the molecular weight of the chitosan is greater than or equal to 90000;
the pH value of the antibacterial layer is 5-6.
3. The bacteriostatic layer according to claim 1,
the base layer has a basis weight of 10-60g/m2A density of 15kg/m or less3;
The mass of the antibacterial composition is 1-3% of the basis weight of the base layer.
4. An absorbent article, comprising a backsheet layer, an absorbent layer, a bacteriostatic layer according to any one of claims 1-3, and a topsheet layer in a layered arrangement;
a first adhesive layer is arranged between the antibacterial layer and the surface layer so as to adhere the antibacterial layer and the surface layer;
a second adhesive layer is arranged between the absorption layer and the antibacterial layer so as to adhere the absorption layer and the antibacterial layer;
wherein the pH value of the surface layer is 5-6.
The first adhesive layer and the second adhesive layer are used in an amount of 2.6 to 3.3g/m, respectively2The coating area is 80-100% of the spreading area of the antibacterial layer.
5. A method of manufacturing an antibacterial layer for use in preparing the antibacterial layer according to any one of claims 1 to 3, the method comprising:
providing an acetic acid aqueous solution, wherein the concentration of the acetic acid aqueous solution is 2-4% by mass percent;
providing chitosan, and mixing the chitosan and the acetic acid aqueous solution to prepare a chitosan-acetic acid aqueous solution, wherein the chitosan-acetic acid aqueous solution comprises the following components in percentage by mass: 1-20% of chitosan;
providing a base layer, and adding the chitosan-acetic acid aqueous solution on the base layer;
drying to obtain the antibacterial layer, wherein the water content of the antibacterial layer is less than 5%.
6. The method of manufacturing an antibacterial layer according to claim 5, wherein the step of adding the aqueous chitosan-acetic acid solution to the base layer comprises:
coating the chitosan-acetic acid aqueous solution on the surface of the base layer through a coating roller; or
Uniformly spraying the chitosan-acetic acid aqueous solution on the surface of the base layer; or
And soaking the base layer in the chitosan-acetic acid aqueous solution.
7. The method of manufacturing an antibacterial layer according to claim 5, wherein the drying is at least one of natural air drying or heat drying;
the heating and drying is at least one of infrared radiation heating and drying or heating roller heating and drying;
the heating temperature of the heating drying is less than or equal to 110 ℃.
8. The method of producing an antibacterial layer according to claim 5,
the air flow rate of the natural air drying is less than or equal to 1 m/s.
9. The method of manufacturing an antibacterial layer according to claim 5, further comprising, after the drying to obtain the antibacterial layer:
detecting the pH value of the antibacterial layer;
and if the pH value of the antibacterial layer is more than 6, repeatedly and uniformly spraying the chitosan-acetic acid aqueous solution on the surface of the base layer, and drying to obtain the antibacterial layer with the pH value of less than or equal to 6.
10. A method of manufacturing an absorbent article for use in making an absorbent article according to any of claim 4, said method comprising:
providing a bottom film layer, and forming a first protective film layer,
providing an absorption layer;
coating a first adhesive layer over the absorbent layer;
attaching an antimicrobial layer to the absorbent layer;
coating a second adhesive layer over the bacteriostatic layer;
and attaching a surface layer to the absorption layer to obtain the absorption article.
Technical Field
The application relates to the technical field of textiles, in particular to a bacteriostatic layer and a manufacturing method thereof, an absorption article and a manufacturing method thereof.
Background
A conventional disposable diaper and a sanitary napkin are generally formed by laminating a liquid-permeable top sheet in which liquid is absorbed and stored after permeating through the liquid-permeable top sheet, an absorbent layer in which liquid is absorbed and a liquid-impermeable back sheet for preventing further leakage of the liquid absorbed and stored in the absorbent layer.
The inventor of the application finds that microorganisms such as bacteria can be bred due to the fact that the disposable diaper and the sanitary towel are not replaced in time in the long-term research and development process, and the disposable diaper and the sanitary towel are not beneficial to human health. In view of the above, it is desirable to provide a bacteriostatic layer and a method for manufacturing the same, an absorbent article and a method for manufacturing the same to solve the above problems.
Disclosure of Invention
The technical problem that this application mainly solved provides a bacteriostatic layer and manufacturing method, absorption articles for use and manufacturing method thereof, and the bacteriostatic layer of this application has obvious bacteriostatic action, and pH value is close human skin, can reduce the irritability to skin.
In order to solve the technical problem, the application adopts a technical scheme that: providing a bacteriostatic layer for use in an absorbent article, comprising: a base layer; the bacteriostatic composition is arranged on the base layer and comprises 20-91% of chitosan and 9.9-80% of acetic acid by mass percent, wherein the deacetylation degree of the chitosan is 60-95%, and the molecular weight is 2000-500000; wherein the pH value of the antibacterial layer is less than or equal to 6.
In order to solve the above technical problem, another technical solution adopted by the present application is: providing an absorption article, wherein the absorption article comprises a bottom film layer, an absorption layer, the bacteriostatic layer and a surface layer which are arranged in a stacking way; a first adhesive layer is arranged between the antibacterial layer and the surface layer to adhere the antibacterial layer and the surface layer; a second adhesive layer is arranged between the absorption layer and the antibacterial layer to adhere the absorption layer and the antibacterial layer; wherein the pH value of the surface layer is 5-6.
In order to solve the above technical problem, the present application adopts another technical solution: there is provided a method of manufacturing an antibacterial layer for use in preparing an antibacterial layer as described above, the method comprising: providing an acetic acid aqueous solution, wherein the concentration of the acetic acid aqueous solution is 2-4% by mass percent; providing chitosan, mixing the chitosan with an acetic acid aqueous solution to prepare a chitosan-acetic acid aqueous solution, wherein the chitosan-acetic acid aqueous solution comprises the following components in percentage by mass: 1-20% of chitosan; providing a base layer, and adding a chitosan-acetic acid aqueous solution on the base layer; drying to obtain the antibacterial layer with water content less than 5%.
In order to solve the above technical problem, the present application adopts another technical solution that: there is provided a method of manufacturing an absorbent article for use in preparing an absorbent article as hereinbefore described, the method of manufacturing an absorbent article comprising: providing a bottom film layer and an absorption layer; coating a first adhesive layer over the absorbent layer; attaching an antibacterial layer to the absorbent layer; coating a second adhesive layer over the bacteriostatic layer; and attaching the surface layer to the antibacterial layer to obtain the absorbent article.
The beneficial effect of this application is: different from the situation of the prior art, the bacteriostatic layer contains a bacteriostatic composition, and the bacteriostatic composition comprises 20-91% of chitosan and 9.9-80% of acetic acid. Because acetic acid is added, the pH value of the antibacterial layer can be controlled to be less than or equal to 6 and is close to the pH value of human skin, and therefore, the irritation to the human body is small. Further, when the absorbent article is used, the absorbent article can form a nearly closed microenvironment near the pudendum of a user, and acetic acid is released in the microenvironment to simultaneously inhibit the growth of bacteria in the microenvironment, so that the irritation to the skin is further reduced or the anaphylactic reaction is generated. Meanwhile, the chitosan can generate amino groups when dissolved in an acetic acid solution, and the amino groups can combine with negative electrons to inhibit bacteria, so that when secretion permeates into the antibacterial layer, the chitosan in the antibacterial layer can inhibit the bacteria in the secretion, and the bacteria in the secretion are prevented from proliferating. In addition, because the bacteriostatic composition further comprises acetic acid, the acetic acid can assist in dissolving chitosan, so that the chitosan can be easily added to the base layer to form the bacteriostatic layer.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:
FIG. 1 is a schematic flow chart of an embodiment of an antibacterial layer of the present invention;
FIG. 2 is a schematic flow chart of one embodiment of an absorbent article of the present invention;
FIG. 3 is a schematic flow chart of one embodiment of a method for forming an antimicrobial layer;
FIG. 4 is a schematic flow chart diagram illustrating one embodiment of a method for making an absorbent article according to the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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, an exploded structure of an embodiment of the present invention is shown.
The application provides a
Wherein the pH of the
In particular, the
Wherein the deacetylation degree of the chitosan is greater than or equal to 70%, and the molecular weight of the chitosan is greater than or equal to 90000. The pH of the
Wherein the
Specifically, the
Meanwhile, in order to make the
Different from the prior art, the
Referring to fig. 2, fig. 2 is an exploded view of an embodiment of an absorbent article of the present application.
Absorbent article100 includes a
Specifically, the
The
Alternatively, the facing
Further, the facing
The
The absorbent material, which is often referred to as superabsorbent or Super Absorbent Polymer (SAP), may be composed of hydrogel-forming polymers that are insoluble in water, are lightly crosslinked and partially neutralized, and may be prepared from an unsaturated, polymerizable, acid group-containing monomer and a crosslinking agent. The above-mentioned absorbent materials all have very good properties of absorbing body fluids, and therefore, they are capable of absorbing a large amount of fluid relative to their own weight. The partially neutralized and crosslinked copolymers of polyacrylic acid and polyvinyl alcohol are particularly suitable for use as absorbent materials in sanitary napkins. In particular partially neutralized salts of crosslinked copolymers of polyacrylic acid and polyvinyl alcohol.
The
Further, in order to improve the comfort of the sanitary napkin during use, such that the
The
Different from the situation in the prior art, the
In one embodiment, a plurality of absorption articles are usually contained in one big packaging bag at the same time in the prior art, and in order to prevent the absorption articles from volatilizing acetic acid in the storage process, the application adopts a separate packaging bag to store a single absorption article, considering that the acetic acid may volatilize into the atmosphere once the big packaging bag is disassembled. This independent wrapping bag can be the quadrangle, it can be including being located the independent object space of putting and being located four hot blank pressing at the edge of being used for placing absorption articles for use of intermediate position, four hot blank pressing will independently put the object space and seal up to airtight space, effectively prevent to absorb articles for use volatilizing acetic acid in the storage process, so that when absorption articles for use are used, absorption articles for use can form near user's private parts and be close inclosed microenvironment, acetic acid is released in this microenvironment, can restrain the bacterial growth in the microenvironment simultaneously, further reduce the irritability or the production anaphylactic reaction to skin.
In one embodiment, a microporous membrane having adsorption and desorption properties to acetic acid, such as an activated carbon microporous membrane or a nonwoven microporous membrane, may be used as the surface layer. If acetic acid volatilizees in the storage process, this many micropore diaphragm can adsorb acetic acid, and when absorbing articles for use, it can form a near inclosed microenvironment near user's private parts to absorb articles for use, and the temperature of this microenvironment is higher than the room temperature, and humidity is big, and at this moment, the adsorbed acetic acid of many micropore diaphragm can be desorbed in this microenvironment, can restrain the bacterial growth in the microenvironment, reduces the irritability or the production anaphylactic reaction to skin simultaneously.
In one embodiment, in order to reduce the acetic acid volatilized by the antibacterial layer adsorbed on the bottom film layer, a waterproof and breathable material with an acidic pH value can be used as the bottom film layer, such as a polyethylene film, a polypropylene film or a polyethylene film with the surface coated with acetic acid. In other embodiments, a gas permeable membrane may also be employed as the base membrane layer, such as at least one of polyether-b-polyamide, nylon-6, nylon-12, nylon-6, polyethylene oxide, or polybutylene oxide. Only air is allowed to permeate through the gas permeable membrane by utilizing the difference in the dissolution and diffusion coefficients of acetic acid and air in the membrane. When the absorption article is used, the acetic acid can not be absorbed by the bottom film layer and can not permeate through the bottom film layer.
Referring to fig. 1 and 3, fig. 3 is a schematic flow chart of an embodiment of a method for manufacturing an antibacterial layer according to the present invention.
The manufacturing method of the
step S11: providing an aqueous solution of acetic acid.
Wherein, the concentration of the acetic acid aqueous solution is 2-4% (such as 2%, 3% or 4%) by mass percentage.
Step S12: providing chitosan, and mixing the chitosan and an acetic acid aqueous solution to prepare a chitosan-acetic acid aqueous solution.
Wherein, the chitosan-acetic acid aqueous solution comprises the following components in percentage by mass: chitosan 1-20% (e.g., 10%, 12%, 14%, 16%, 18%, or 20%). The deacetylation degree of the chitosan is greater than or equal to 70%, and the molecular weight of the chitosan is greater than or equal to 90000. The pH of the
Step S13: a
The
Wherein, the step S13 further includes: the chitosan-acetic acid aqueous solution may be coated on the surface of the
Step S14: drying to obtain the
Wherein, the water content of the
Wherein, in one embodiment, the drying is at least one of natural air drying or heating drying. The heat drying is at least one of infrared radiation heat drying or heating roller heat drying. The heating temperature for heating and drying is less than or equal to 110 ℃.
Specifically, the drying is performed by heating, and the heating may be performed by infrared radiation heating, heating roller, or the like. Optionally, the heating temperature is less than or equal to 110 ℃, so as to prevent damage to the
In one embodiment, the air flow rate of the natural air drying is less than or equal to 1 m/s.
It is understood that, in order to prevent excessive dissipation of acetic acid, the air flow rate on the surface of the
In one embodiment, after drying to obtain the
Specifically, after step S14, the method for manufacturing the
Referring to fig. 2 and 4, fig. 4 is a schematic flow chart of an embodiment of a method for manufacturing an absorbent article of the present application. The manufacturing method of the
step S21: a
step S22: an
Step S23: a first
Step S24: the
Step S25: a second
Step S26: the
Specifically, further, in order to prolong the acetic acid release aging. Make
Alternatively, the first
Optionally, the amount of binder is 2.85-3.15g/m2(e.g., 2.85 g/m)2、2.95g/m2Or 3.15g/m2) When the adhesive is used for preventing the adhesive from being used too much, the absorption of secretion is easily blocked, and the layering phenomenon easily occurring between the
Optionally, the first
Alternatively, the first
The adhesive may be polyvinyl alcohol adhesive or thermosetting cationic resin adhesive, and the resin may be polyamide resin.
It will be appreciated that the
The characteristics of the composite nonwoven fabric will be described below with reference to the table.
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