KR102270245B1 - Hybrid sanitary pad for improved water uptake and air permeability - Google Patents

Abstract

The present invention relates to a hybrid sanitary napkin for improving absorption and breathability. In the present invention, the absorption inducing layer 120, the upper absorption layer 130, and the lower absorption layer 140 are sequentially formed between the outer skin 160 and the outer skin 160 located in the lowermost layer, located in the uppermost layer to primarily absorb menstrual blood. an endothelium 110 forming a central ventilation hole 111 for providing the subsequent menstrual blood to the absorption inducing layer 120; And the inner fabric is formed between the endothelium 110 and the upper absorbent layer 130, the area is 1/10 to 2/10 of the total area of the endothelium 110, a ventilation hole formed in the center of the endothelium 110 ( 111) is formed in the central portion of the endothelium 110 as a center, so that it not only serves to secondary absorption of menstrual blood provided to the ventilation hole 111 of the endothelium 110, but also the upper absorbent layer 130 and the lower absorbent layer ( 140) through the absorption inducing layer 120 that serves to secure the breathability to the breathable PE film 150; includes
Thereby, it provides the effect of solving the problem of generating skin irritation or disease caused by the existing sanitary napkins with reduced air permeability. In other words, in the present invention, the PE film on the bottom of the existing sanitary napkin is made for the purpose of waterproofing, but in order to solve the problem of causing skin irritation or blistering due to lack of ventilation, a film applied with nanofibers is applied to the sanitary napkin so that the liquid does not penetrate It has the effect of providing a safe, breathable sanitary napkin with less irritation to the skin as the air passes through it.

Description

Hybrid sanitary pad for improved water uptake and air permeability}

The present invention relates to a hybrid sanitary napkin for improving absorption and breathability, and more particularly, to improve absorption and breathability in order to solve the problem of skin irritation or disease caused by existing PE film-type sanitary napkins with reduced breathability. It relates to a hybrid sanitary napkin for

Sanitary napkins are a daily necessity for young women today, and the most important factor among the functions of sanitary pads is hygroscopicity.

However, recently, the necessity of adequate ventilation of the sanitary napkin has been emphasized in order to prevent sensitive skin irritation or skin diseases.

The prior art Korean Patent Application No. 10-2002-7001986 "absorbent sanitary napkin" describes an absorbent sanitary napkin comprising a first sheet of liquid-permeable material, a second sheet of liquid-permeable material disposed adjacent to the first sheet, and It has a laminate structure including an absorbent member for absorbing a liquid, disposed adjacent to the second sheet, the second sheet being arranged to receive the liquid deposited on the first sheet and to move the liquid to the absorbent member. The sanitary napkin relates to a sanitary napkin having a thickness of about 5 mm or less when dry and having a penetration time of less than 15 seconds.

However, since the existing sanitary napkins only propose a laminated structure of sheets to improve absorbency, there has been a problem in that the sanitary napkins cause skin irritation or skin diseases according to the decrease in breathability.

Korean Patent Application No. 10-2002-7001986 "Sanitary absorbent napkin"

An object of the present invention is to solve the above problems, and to provide a hybrid sanitary napkin for improving absorption and breathability in order to solve the problem of causing skin irritation or diseases due to the existing sanitary napkins with reduced breathability.

More specifically, in the present invention, the PE film on the bottom of the existing sanitary napkin is made for the purpose of waterproofing, but in order to solve the problem of causing skin irritation or blistering due to non-ventilation, a film applied with nanofibers is applied to the sanitary napkin to allow the liquid to penetrate. An object of the present invention is to provide a hybrid sanitary napkin for improving absorption and air permeability in order to provide a safe breathable sanitary napkin with less irritation to the skin as air passes through it.

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the hybrid sanitary napkin for improving absorption and breathability according to an embodiment of the present invention has an absorption inducing layer 120, an upper absorbent layer 130 and an endothelium 110 positioned in the uppermost layer to form the lower absorbent layer 140 and forming a central ventilation hole 111 for providing menstrual blood after absorption of menstrual blood to the absorption inducing layer 120 primarily; And the inner fabric is formed between the endothelium 110 and the upper absorbent layer 130, the area is 1/10 to 2/10 of the total area of the endothelium 110, a ventilation hole formed in the center of the endothelium 110 ( 111) is formed in the central portion of the endothelium 110 as a center, so that it not only serves to secondary absorption of menstrual blood provided to the ventilation hole 111 of the endothelium 110, but also the upper absorbent layer 130 and the lower absorbent layer ( 140) through the absorption inducing layer 120 that serves to secure the air permeability to the PE film 150; It is characterized in that it includes.

At this time, the upper absorbent layer 130 and the lower absorbent layer 140 are formed with an area overlapping the entire area of the endothelium 110, and the upper core absorbent part 131 and the lower core absorbent part 141 are respectively formed in the center. characterized in that

In addition, in the present invention, the coating layer material of the upper core absorbent part 131 , the lower core absorbent part 141 , and the absorption inducing layer 120 is characterized in that it is the same.

In addition, the ready-made PE film 150 is characterized in that it passes air together with waterproofing for menstrual blood.

The hybrid sanitary napkin for improving absorption and air permeability according to an embodiment of the present invention provides an effect to solve the problem of skin irritation or disease caused by the existing sanitary napkin with reduced air permeability.

More specifically, in the hybrid sanitary napkin for improving absorption and breathability according to the present invention, the PE film on the bottom of the existing sanitary napkin is made for the purpose of waterproofing, but it is not breathable, so it is a nanofiber to solve the problem of causing skin irritation or blisters. By applying the film applied to the sanitary napkin, liquid does not permeate and air passes through, which has the effect of providing a safe, breathable sanitary napkin with less irritation to the skin.

1 is a perspective view illustrating a hybrid sanitary napkin 100 for improving absorption and breathability according to an embodiment of the present invention.
2 is a perspective view illustrating a state in which the components of the hybrid sanitary napkin 100 for improving absorption and breathability are disassembled according to an embodiment of the present invention.
3 is a view for explaining the function of the hybrid sanitary napkin 100 for improving absorption and breathability according to an embodiment of the present invention.

Hereinafter, a detailed description of a preferred embodiment of the present invention will be described with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a perspective view illustrating a hybrid sanitary napkin 100 for improving absorption and breathability according to an embodiment of the present invention. 2 is a perspective view illustrating a state in which the components of the hybrid sanitary napkin 100 for improving absorption and breathability are disassembled according to an embodiment of the present invention. 3 is a view for explaining the function of the hybrid sanitary napkin 100 for improving absorption and breathability according to an embodiment of the present invention.

1 to 3 , the hybrid sanitary napkin 100 for improving absorption and breathability includes an endothelium 110 , an absorption inducing layer 120 , an upper absorbent layer 130 , a lower absorbent layer 140 , and a breathable PE film 150 . ), may include an outer shell (160).

The endothelium 110 may form an uppermost layer in order to sequentially form an absorption inducing layer 120 , an upper absorbent layer 130 , and a lower absorbent layer 140 between the inner shell 160 and the outer shell 160 located in the lowermost layer.

More specifically, the endothelium 110 is a hybrid sanitary napkin for improving the absorption rate by the absorption inducing layer 120, the upper absorbent layer 130 and the lower absorbent layer 140, and further improving the breathability using the breathable PE film 150 ( 100), it may be formed using a PLA sheet in order to rapidly move most of the menstrual blood to the upper absorbent layer 130 through the absorption inducing layer 120 after first absorption of menstrual blood.

That is, the PLA sheet can form a polyethylene mixture with a PLA (PolyLactic Acid)-based raw material corresponding to an eco-friendly recycled material. Here, the weight ratio of each raw material constituting the PLA (PolyLactic Acid)-based raw material may be performed by the orderer's request method, and may be manufactured based on other main raw materials.

Among PLA (PolyLactic Acid)-based raw materials, PLA is a thermoplastic polyester manufactured by polymerizing lactide or lactic acid obtained by fermenting plants such as renewable corn. It has eco-friendly characteristics. PLA can be prepared by polymerizing lactic acid or lactide, and if necessary, glycol compounds such as ethylene glycol or propylene glycol, dicarboxylic acids such as ethanedioic acid or terephthalic acid, glycolic acid or 2-hydroxy It may be copolymerized with a suitable monomer such as hydroxycarboxylic acid such as benzoic acid or lactones such as caprolactone or propiolactone. In addition, PLA can be generally divided into D,L-PLA, meso-PLA, D-PLA, L-PLA, etc., in the present invention, the type is not limited, and the above-described PLA is used alone or two or more types. It can be used by mixing.

In addition, in another embodiment of the present invention, the endothelium 110 is a resin composition consisting of 5 to 7 parts by weight of polyethylene with respect to 100 parts by weight of PLA (PolyLactic Acid) in order to reinforce the strength of the upper surface and the lower surface of the nonwoven sheet By being formed in a way of coating at least one or more, the absorption of menstrual blood into the nonwoven fabric inside is improved compared to the case where it is formed only with a cotton material, and it serves to move quickly to the absorption inducing layer 120 through the ventilation hole 111. do. Here, the ventilation hole 111 is formed in the center of the upper and lower coating layers of the endothelium 110, so that it is primarily and entirely absorbed by the nonwoven fabric inside the endothelium 110, and then quickly flows down to the absorption inducing layer 120. It can serve as a pathway.

In addition, in another embodiment of the present invention, 5 to 7 parts by weight of polyethylene, 3 to 4 parts by weight of ethylene vinyl acetate copolymer (EVA), 2 to 3 parts by weight of polyurethane based on 100 parts by weight of PLA (PolyLactic Acid) to reinforce strength The resin composition composed of parts by weight can be used to coat the upper and lower surfaces of the endothelium 110, and the endothelium 110 made of the PLA-based synthetic resin material manufactured by the above resin composition is tensile compared to the eco-friendly recycled material using only PLA. In addition to exhibiting improved performance in strength, flexural strength, load deflection temperature, and impact strength, the manufacturing cost can be lowered because the composition material itself is inexpensive.

The absorption inducing layer 120 is formed of a fabric material having a cooling function and is formed between the endothelium 110 and the upper absorbent layer 130 , and the area is 1/10 to 2/10 of the total area of the endothelium 110 . It is formed to overlap the central portion of the endothelium 110 around the ventilation hole 111 formed in the center of the endothelium 110 .

Accordingly, the absorption inducing layer 120 not only serves to secondary absorb menstrual blood provided to the ventilation hole 111 of the endothelium 110 , but also is breathable through the upper absorbent layer 130 and the lower absorbent layer 140 . It may serve to secure the air permeability to the PE film (150).

To this end, the absorption inducing layer 120 improves the air permeability and absorption rate through processing on the raw material, and a coating layer of the polypropylene sheet may be formed on the upper and lower surfaces of the raw material. Here, the polypropylene sheet uses 100 parts by weight of a mixture in which 8 to 13 weight ratio of carbon fiber is added to polypropylene 87 to 92 weight ratio, and carbon fiber excellent in breaking strength is added and mixed to polypropylene excellent in tensile strength to form an absorption inducing layer ( 120) to have the required breaking strength.

On the other hand, in the present invention, in order to form a film-type polypropylene sheet serving as a material for the coating layer of the absorption inducing layer 120 in the present invention, it is extruded using an extrusion device to form an extrusion melt, where it is preferable to dissolve at a temperature of 230 to 270 ° C. Do. Thereafter, a film-type polypropylene sheet is formed in a T-die method when the extrusion melt in the molten state is passed, and a cooling device attached to the outlet of the die cools the film-type polypropylene sheet. Upon cooling, the film-type polypropylene sheet is cooled and then transferred to a guide roller for cooling. The cooling device used here can control the temperature of the film-type polypropylene sheet in a preset temperature range by utilizing a Peltier element, a temperature sensor, and an Arduino board. Here, the temperature setting range is 7℃ to 15℃ in consideration of the temperature difference immediately after the production of the film-type polypropylene sheet using the T-die method by the die for the extrusion melt and cooling by the guide roller corresponding to the room temperature state. It is preferable to set Thereafter, the film-type polypropylene sheet cooled by the guide roller is guided to the stretching device, and while the film-type polypropylene sheet is transferred to the stretching device by the guide roller, the overall length of the guide roller is set. A thermal stabilization process can be provided at room temperature. The stretching apparatus performs stretching by pressing and pulling the film-type polypropylene sheet that has passed through the guide roller to become a thin film. More specifically, by performing stretching in the width direction in a state of heating and pressure on the film-type polypropylene sheet during stretching, the area ratio before and after stretching to the polypropylene film as a final product is increased by 1 to 2: 2.8 to 3.6 times. let it do Here, the heating temperature during stretching is 250 to 350° C., and the pressurized state is 330 to 430 mbar. When the thickness of the coating layer corresponding to the polypropylene film is 2700 μm, it is preferably performed at 260° C. and 370 mbar. .

On the other hand, the heating temperature within the above-described preferred temperature range during stretching should be performed at 250 to 350 ℃. When the temperature is higher than the temperature range, the degree of freedom of the molecules increases, so that the orientation of the molecules is not performed well. In addition, when the temperature is lower than the range, stretching is not performed well and the polypropylene sheet is not stretched and is broken.

On the other hand, it is possible to form a uniform lattice structure (mesh structure) having a diamond-shaped structure, a net shape, and a rectangular shape according to the mesh process along with softening the polypropylene sheet between the thermal stabilization process after stretching for the polypropylene sheet. . By forming such a mesh structure, it is possible to increase the breathability and the absorption rate and aggregation rate of menstrual blood to the inner fabric material.

The upper absorbent layer 130 and the lower absorbent layer 140 are formed to overlap the entire area of the endothelium 110 , and an upper core absorbent portion 131 and a lower core absorbent portion 141 may be formed, respectively.

Here, the material and manufacturing method of the upper core absorbent part 131 and the lower core absorbent part 141 are the same as those of the coating layer of the absorption inducing layer 120 , but to form the core region of the upper absorbent layer 130 and the lower absorbent layer 140 . After laminating polypropylene sheets in layers, the whole process, like the manufacturing process of foamed foam, is a foaming step of inflating and foaming the injected synthetic resin particles, a drying step of removing moisture contained in the foamed particles, and dried foamed particles It can be formed through a molding step in which the foamed particles are entangled with each other by supplying high-temperature steam to the .

That is, the generated upper core absorbent portion 131 and lower core absorbent portion 141 have the same surface area as the absorption inducing layer 120 in the central region of the upper absorbent layer 130 and the lower absorbent layer 140 made of microfine fibers, respectively. By forming in the core by area, the breathability of each of the upper absorbent layer 130 and the lower absorbent layer 140 and the absorption rate of the inner microfine fibers centered on the upper core absorbent part 131 and the lower core absorbent part 141 are increased. It is possible to dramatically reduce the weight in a foamed form by stacking a plurality of polypropylene sheets having a mesh structure.

The breathable PE film 150 is coated with a breathable PE film on the nanofiber on the upper surface, and is formed in the same shape as the endothelium 110 to constitute the lower surface of the lower absorbent layer 140 .

That is, the nanofiber used in the present invention is an elastic nanofiber by dissolving an elastic polymer having fiber-forming ability and a silver (Ag) ion-containing material in an organic solvent to prepare an electrospinning solution, and electrospinning the electrospinning solution. An elastic nanofiber web including reduced silver nanoparticles can be prepared and used.

Here, as a raw material used for the coating layer of the air-permeable PE film 150, a composite composition produced by mixing talc and a slip agent in a mixture of polyethylene as a main material and polyurethane (Thermalplastic Poly Urethan, TPU) is mixed in a hopper It can be supplied to an extrusion device using

Here, in addition to polyethylene as a raw material, TPU is a rubber-like elastomer having a urethane group (-NHCOO-), and since it has excellent properties in mechanical strength, abrasion resistance, colorability, feel, etc., the resin produced using it is suitable for coating compositions, etc. Rather, it can play a role of restricting the passage of menstrual blood through control of the weight to be mixed with polyethylene. In addition, as a non-PVC thermoplastic resin, TPU is environmentally friendly because it is harmless to the human body because there is no risk of generating harmful compounds, and does not emit air or soil pollutants when incinerated.

In one embodiment of the present invention, TPU can be obtained by synthesizing 4,4'-methylenediphenyl diisocyanate, polybutyl adipatediol, and 1,4-butanediol, 4,4'-methylenediphenyl diisocyanate Based on 100 parts by weight, 15 to 17 parts by weight of 1,4-butanediol and 20 to 30 parts by weight of polybutyl adipatediol may be synthesized. Here, the weight ratio of 4,4'-methylenediphenyl diisocyanate, polybutyl adipatediol, and 1,4-butanediol may be appropriately changed depending on the desired physical properties and the intended use of the thin urethane film. For example, when the weight ratio of 4,4'-methylenediphenyl diisocyanate is increased, the ratio of hard segments in the polyurethane is increased, and the overall hardness is increased, and conversely, poly4,4'-methylenediphenyl diisocyanate is increased. When the weight ratio of isocyanate becomes small, the proportion of soft segments in the polyurethane increases, thereby increasing elongation and ductility.

Talc is added to improve elongation (formability) and hydrolysis resistance of the composite composition for preparing the coating layer composition of the breathable PE film 150, and polyurethane is mixed with polyethylene in a weight ratio of 12 to 11: 1 to 3 10 to 17 parts by weight may be used based on 100 parts by weight of the total of one mixture. Here, when the weight ratio of polyethylene is less than 12, when the weight ratio of polyethylene is 11, the air permeability is reduced by 20 to 35% compared to the case where the weight ratio is 12, and on the contrary, when the weight ratio of polyethylene exceeds 17, the weight ratio of polyethylene is 18 In this case, there was a problem in that the permeability of menstrual blood was increased by 10 to 13% compared to the case where the weight ratio was 17. That is, in the present invention, the PE film to which the nanofiber is applied is applied to the sanitary napkin according to the weight ratio control of polyethylene and polyurethane to lower the liquid permeability and increase the air permeability, thereby providing a safe breathable sanitary napkin with less irritation to the skin.

Here, when the amount of talc is less than 10 parts by weight, the effect of improving the dimensional stability during the molding of the coating sheet by melting and stretching of the mixture is reduced, and when it exceeds 17 parts by weight, the mechanical strength and the abrasion resistance are significantly deteriorated.

The slip agent makes the coating sheet for the breathable PE film 150 formed in two layers into the tension device to be easily slid and divided one by one, and the coating sheet for the thin breathable PE film 150 by the winding device is wound. This can be done to prevent sticking to each other. The slip agent used in the present invention is preferably 0.5 to 0.7 parts by weight based on 100 parts by weight of the mixture of the first type slip agent and the amide-based slip agent.

Here, when the amount of the slip agent is less than 0.5 parts by weight, the coefficient of friction is not sufficiently lowered, and when it exceeds 0.7 parts by weight, the winding rate may drop. Amide-based slip agents include unsaturated 13-cis-docosenamide (13-cis-docosenamide: hereafter erucamide), 9-cis-octadecene amide (9-cis-octadecenamide: hereafter oleamide). ) and saturated octadecanamide (hereinafter stearamide), docosanamide (docosanamide: hereinafter behenamide) can be used, but it is more preferable to use an unsaturated type.

The second type slip agent of the present invention is montan wax, rubber-based elastomer, specifically, styrene-butadienstrene block copolymer (SBS), styrene ethylene/butylene resin (SEBS), inorganic material (specifically, , silica, talc, calcium carbonate) is preferably used alone or in combination of one or more. Here, the amount of the second type slip agent is preferably 0.5 to 0.9 parts by weight based on 100 parts by weight of the mixture.

That is, when the amount of the second type slip agent is less than 0.5 parts by weight, the coefficient of friction is not sufficiently lowered, and when it exceeds 0.9 parts by weight, the winding rate may decrease.

Thereafter, the extrusion device extrudes the mixture in a molten state to produce a PE extrusion melt. When the PE extrusion melt is produced using the mixture, the weight average molecular weight of the mixture is 500,000 g/mol or more, and the melt index is 0.5 to 30 g/5 min. (250°C) is preferable, and the molecular weight distribution (PI) is 6 or more, and it is preferable that the melt strength is 70 mN or more.

On the other hand, in another embodiment of the present invention, when the stretching of the coating sheet for the breathable PE film 150 is additionally performed, the breathable PE film 150 using the tension provided by the multi-transfer roller between the stretching and thermal stabilization process. A diamond lattice structure can be obtained according to a mesh process by a needle split method along with softening of the coating sheet for Here, the needle split method allows the coating sheet for the breathable PE film 150 to pass through the upper side of the needle split roller formed along the outer circumferential surface of the lattice-type needle, and in this case, the needle split roller is formed at the entry end for entering the multi-feed roller. do. Accordingly, in a state in which a pulling tension is applied to a plurality of transport rollers for the coating sheet for the breathable PE film 150 coming out of the stretching oven, for the diamond lattice formation for the coating sheet for the breathable PE film 150 stretched By performing the meshing process by rotation of the rotating needle split roller, a regular and uniform diamond lattice structure using tension and timing according to rotation is formed. At this time, by using the above-described tension, the needle split roller may perform drag type punching by a grid-type needle on the outer peripheral surface.

The outer skin 160 is a portion in contact with the lower part of the hybrid sanitary napkin 100, that is, the panties, for improving absorption and breathability. The material may be composed of cotton and a plywood provided with a breathable film, and a breathable PE film 150 and The adhesion method of the air-permeable PE film 150 and the adhesive solution is used to move and press through a roller to bond, and the rim of the outer shell 160 and the air-permeable PE film 150 has an embossed structure to improve the adhesion. have.

And, the material of the outer skin 160 may have an upper surface made of a waterproof material, and a lower surface may be formed of two layers of a material suitable for the season, such as hemp material, cotton, and microfiber fabric.

As described above, preferred embodiments of the present invention have been disclosed in the present specification and drawings, and although specific terms are used, these are only used in a general sense to easily explain the technical contents of the present invention and to help the understanding of the present invention. , it is not intended to limit the scope of the present invention. It is apparent to those of ordinary skill in the art to which the present invention pertains that other modifications based on the technical spirit of the present invention can be implemented in addition to the embodiments disclosed herein.

100: Hybrid sanitary napkin to improve absorption and breathability
110: endothelium
120: absorption inducing layer
130: upper absorption layer
140: lower absorption layer
150: breathable PE film
160: outer shell

Claims (4)

A hybrid sanitary napkin for improving absorption and breathability formed by sequentially stacking the endothelium 110, the absorption inducing layer 120, the upper absorbent layer 130, the lower absorbent layer 140, the breathable PE film 150, and the outer shell 160 The method of (100),
The endothelium 110 is
An uppermost layer is formed to sequentially form an absorption inducing layer 120, an upper absorbent layer 130, and a lower absorbent layer 140 between the outer skin 160 located in the lowermost layer, but the absorption inducing layer 120, the upper absorbent layer (130) and the lower absorbent layer 140 to improve the absorption rate, and additionally, by using the breathable PE film 150, located on the top of the hybrid sanitary napkin 100 to improve the absorption of menstrual blood after the absorption of the primary A resin composed of 5 to 7 parts by weight of polyethylene with respect to 100 parts by weight of PLA (PolyLactic Acid) to reinforce the strength and is formed by utilizing a PLA sheet to quickly move it to the upper absorbent layer 130 through the layer 120. It is formed in such a way that the composition is coated on at least one of the upper and lower surfaces of the nonwoven sheet, and has a ventilation hole 111 to move it to the absorption inducing layer 120 through the ventilation hole 111, The provided ventilation hole 111 is formed in the center of the upper and lower coating layers of the endothelium 110 , so that it is primarily and entirely absorbed by the nonwoven fabric inside the endothelium 110 , and then quickly flows down to the absorption inducing layer 120 . It acts as a conduit to
The absorption inducing layer 120 is
It is formed between the endothelium 110 and the upper absorbent layer 130 , and the area is 1/10 to 2/10 of the total area of the endothelium 110 , centering on the ventilation hole 111 formed in the center of the endothelium 110 . It is formed to be superimposed on the central part of the endothelium 110,
In addition to performing a role of secondary absorption of menstrual blood provided through the ventilation hole 111 of the endothelium 110, the breathability to the breathable PE film 150 through the upper absorbent layer 130 and the lower absorbent layer 140 is ensured. plays a role,
To improve the breathability and absorption rate through processing for the fabric material, a coating layer of polypropylene sheet is formed on the upper and lower surfaces of the fabric material having a cooling function, and the polypropylene sheet forming the coating layer is polypropylene 87 to 92 in weight ratio. A uniform grid structure (mesh) according to the mesh process along with softening of the polypropylene sheet between the heat stabilization process after stretching to the polypropylene sheet during the manufacturing process is used, and 100 parts by weight of the carbon fiber 8 to 13 weight ratio is added and mixed. structure) is used,
The upper absorbing layer 130 and the lower absorbing layer 140 are
The total area of the endothelium 110 and the overlapping area are formed, and an upper core absorbent part 131 and a lower core absorbent part 141 are respectively formed,
The material and manufacturing method of the upper core absorbent part 131 and the lower core absorbent part 141 are the same as those of the coating layer of the absorption inducing layer 120 , but to form the core region of the upper absorbent layer 130 and the lower absorbent layer 140 . As an additional process for polypropylene sheets, a foaming step of inflating and foaming the injected synthetic resin particles after laminating them in layers, a drying step of removing moisture contained in the foamed particles, and supplying high-temperature steam to the dried foamed particles for foaming It is formed through a molding step in which the particles are entangled and combined with each other,
The breathable PE film 150 is,
A breathable PE film is coated on the upper surface of the nanofiber to pass air together with waterproofing for menstrual blood, and is formed in the same shape as the endothelium 110 to constitute the lower surface of the lower absorbent layer 140, and the nanofiber is elastic As nanofibers, an electrospinning solution is prepared by dissolving an elastic polymer having fiber-forming ability and a silver (Ag) ion-containing material in an organic solvent, and the electrospinning solution is electrospinning to form an elastic polymer containing reduced silver nanoparticles. A material made of a nanofiber web is used, and as a raw material used for the coating layer of the breathable PE film 150, talc, slip agent ( slip agent) and supplied to an extrusion device using a hopper, and talc is for 100 parts by weight of a mixture of polyethylene and polyurethane in a ratio of 12 to 11: 1 to 3 by weight. 10 to 17 parts by weight are used, and 0.5 to 0.7 parts by weight is used for 100 parts by weight of the mixture as an amide-based slip agent, and thermal stabilization after stretching when stretching for the coating sheet for the breathable PE film 150 is additionally performed A diamond lattice structure was obtained according to a mesh process by a needle split method with softening of the coating sheet for the breathable PE film 150 using the tension provided by the multi-transfer roller between the processes. use,
The outer shell 160,
It is a part in contact with the panties located at the bottom of the hybrid sanitary napkin 100 to improve absorption and breathability. The upper surface is made of a waterproof material, and the lower surface is a material suitable for the season corresponding to one of hemp, cotton, and microfiber fabrics. It is formed in two layers of the outer shell of , and the adhesion method with the breathable PE film 150 uses the breathable PE film 150 and an adhesive solution, and the outer shell 160 and the breathable PE film are adhered by pressing and moving through a roller. A hybrid sanitary napkin for improving absorption and breathability, characterized in that the rim of 150 has an embossing structure.
The method according to claim 1, Endothelium 110,
In order to reinforce the strength, a resin composition consisting of 5 to 7 parts by weight of polyethylene, 3 to 4 parts by weight of ethylene vinyl acetate copolymer (EVA), and 2 to 3 parts by weight of polyurethane based on 100 parts by weight of PLA (PolyLactic Acid) is added to the endothelial ( 110), a hybrid sanitary napkin for improving absorption and breathability, characterized in that it is used to coat the upper and lower surfaces. delete delete

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