KR102596557B1 - Sanitary napkin having an absorbent filter body - Google Patents

Abstract

The present invention relates to a sanitary napkin provided with an absorption filter body, and more specifically, to a sanitary napkin having an absorption layer for absorbing menstrual blood, which is equipped with an absorption filter body having a length that can be inserted between the wearer's hip bones to be seated on the rear of the sanitary napkin. However, it relates to a sanitary napkin manufactured by spraying cellulose fibers extracted from coconut shells onto the absorbent layer, so that it absorbs and removes the odor of menstrual blood, is lightweight, and has an absorbent filter body that has a UV-blocking function.
For this purpose, the sanitary napkin is configured to include an absorption filter body at the rear of the sanitary napkin with a length that can be inserted between the wearer's hip bones; It is characterized by spraying cellulose fibers extracted and manufactured by electrospinning by polymerizing monomers prepared through a fermentation process of coconut shells into the absorbent layer for absorbing menstrual blood and the absorbent filter body.

Description

Sanitary napkin having an absorbent filter body }

The present invention relates to a sanitary napkin provided with an absorption filter body, and more specifically, to a sanitary napkin having an absorption layer for absorbing menstrual blood, which is equipped with an absorption filter body having a length that can be inserted between the wearer's hip bones to be seated on the rear of the sanitary napkin. However, it relates to a sanitary napkin manufactured by spraying cellulose fibers extracted from coconut shells onto the absorbent layer, so that it absorbs and removes the odor of menstrual blood, is lightweight, and has an absorbent filter body that has a UV-blocking function.

Women's sanitary pads are a type of pad that prevents menstrual blood from leaking during menstruation. It has a structure that allows menstrual blood to be easily absorbed during everyday life, exercise, or sleep.

The thinner the sanitary napkin, the more comfortable it is to wear and the less visible it is on the outside, so the quality of sanitary napkins is being improved in the direction of improving absorbency while being as thin as possible.

As shown in FIG. 1, the sanitary napkin according to the prior art has a pad 10 formed in a long, rectangular shape, and an outer shell formed on both sides with adhesive portions 11 for fixing the pad 10 and attaching the sanitary napkin to panties. It consists of (12).

When you want to wear a sanitary napkin, attach the sanitary napkin to a certain part of the panties with the pad 10 facing upward, and then wear the panties.

Additionally, the pad 10 has a plurality of absorbent layers and is configured to absorb menstrual blood.

On the other hand, although the sanitary napkin of the type shown in Figure 1(a) is the most common, it is not only vulnerable to waterproofing in that the outer shell 12 is made of non-woven material, but also is not able to catch menstrual blood flowing from the bone area of the buttocks, thereby causing menstrual blood. There was a problem with it leaking to the outside.

In addition, there was a problem that the sanitary napkin could not be worn stably because it was pushed by both thighs when worn.

Meanwhile, conventional disposable sanitary napkins basically consist of a cover, cotton, an absorber made of a polymer absorbent material, and a waterproof membrane made of a polyethylene film, and are used by attaching and detaching them to underwear through double-sided tape.

The polymer absorber plays a role in preventing menstrual blood from leaking out. It is usually a powder, but when it absorbs menstrual blood, it changes into a gel form and has a strong absorbing power.

However, the carcinogen formaldehyde (a substance that causes sick building syndrome) generated during the manufacturing process of polymer absorbers, which are mainly used for strong absorption, causes extreme itching, dermatitis in the vaginal area, bad odor, and various inflammatory diseases. , which results in various daily pains, including difficulties in living.

The reason why acne, cold body aches, etc. occur during the menstrual period is due to the large influence of this substance, and since its original shape is in powder form, this fine powder penetrates the pulp part and enters the endometrium, causing dryness of the uterus and inside the uterus. It reduces the normal function of retaining harmful bacteria while remaining moist, causing inflammation within the uterus, which causes female diseases such as uterine dryness, endometriosis, and uterine fibroids.

In addition, secretions absorbed by the polymer absorber are not ventilated due to the waterproof membrane made of polyethylene film, causing unpleasant odor and dermatitis in and around the vagina and surrounding areas, resulting in extreme itching and pain. This causes severe itching and pain in daily life and interpersonal relationships. It also causes complaints of inconvenience.

Meanwhile, in response to this problem, sanitary napkins made with natural mineral powder, which emits far-infrared rays and negative ions and has a deodorizing function, have been proposed. However, most of them apply natural mineral powder to sanitary napkins by coating them with natural mineral powder. Since the amount of natural minerals used in sanitary pads is small, the effect of natural minerals is quite minimal.

Additionally, when a conventional sanitary napkin is worn, the cover sheet that forms the top layer of the sanitary napkin is pressed and adhered to the absorbent layer, so the menstrual blood absorbed in the absorbent layer flows out to the cover sheet and touches the user's local area. Therefore, the feeling of wearing is not good because it is wet, and the user's local area may become soggy.

Meanwhile, sanitary napkins using 100% pure cotton as the absorbent layer are being developed, and most use deodorants by post-processing the surface of the pure cotton fiber yarn.

At this time, deodorizing functional fibers using pure cotton have the advantage of being easy to apply as they are fibers whose surface has been modified by post-processing the surface of the fiber yarn with a deodorant selected according to function, but are more durable and durable compared to synthetically manufactured deodorizing functional fibers. It has a problem of relatively low commercial usability.

In other words, conventionally, polyolefin, carboxylic acid, and cyclodextrin (CD) were covalently grafted onto the pure cotton that makes up the absorber to synthesize a modified polyolefin with deodorizing functionality, and then this modified polyolefin was mixed with polyolefin to be used in the product to be applied. We make polyolefin compounds with deodorizing properties and manufacture them into molded products according to the purpose.

Meanwhile, there are two types of commonly used feminine hygiene tampons, one of which is a finger tampon, which is an absorbent structure designed to be inserted directly into a body cavity, such as a woman's vagina, by the user, and the other is a separate insertion device. A tampon designed to be inserted with the help of an applicator. The insertion device (applicator) is made of cardboard or polymer resin.

Referring to FIG. 1(b), as an example, a tampon has an absorbent body 20 and includes an outer tube 21, an inner tube 22, and a removal string 23.

There is a risk of causing toxic shock syndrome if the vaginal wall dries out or the vaginal wall becomes damaged by wearing such a highly absorbent tampon for a long period of time, and warm tampons containing blood provide a home for the production of vaginal bacteria.

Recently, the use of tampons with excellent fit and stability has been increasing, and accordingly, the shape and material of the absorber that absorbs menstrual blood are emerging as very important factors.

However, since these tampons are still worn by inserting them into the wearer's vagina, the problem of toxic shock syndrome inevitably exists.

Accordingly, there is a demand for sanitary pads with an absorbent filter body manufactured and configured to sufficiently perform the role of a tampon while relieving the anxiety of developing toxic shock syndrome.

Korean Registered Utility Model Publication No. 20-0484074 (published on July 21, 2017)

The present invention was developed to solve the problems described above, and includes an absorption filter body that surrounds the wearer's hip bone, so that the sanitary napkin can be worn stably and is configured to prevent leakage of menstrual blood. The purpose is to provide sanitary pads.

In addition, the purpose is to provide a sanitary napkin equipped with an absorbent filter body that absorbs menstrual blood and has an ultraviolet ray blocking effect while forming an absorbent layer by spraying cellulose fibers extracted from coconut shells, making it eco-friendly and soft to the touch. .

In order to achieve the above object, the sanitary napkin with an absorption filter body according to the present invention includes an absorption filter body having a length that can be inserted between the wearer's hip bones at the rear of the sanitary napkin.

At this time, the absorbent layer for absorbing menstrual blood of the sanitary napkin and the absorbent layer constituting the absorption filter body are characterized by spraying cellulose fibers extracted and manufactured by electrospinning by polymerizing monomers prepared through a fermentation process of coconut shells. .

Additionally, the absorption filter body is shaped like a circular bar and is configured to be seated on the rear of the sanitary napkin.

Meanwhile, a modified polyolefin with a deodorizing function is synthesized by covalently grafting polyolefin, cyclodextrin (CD), and carboxylic acid, and then the modified polyolefin is mixed with the polyolefin to be used in the product to be applied, and the polyolefin compound with a deodorizing function is added to the absorbent layer. Use it to,

The carboxylic acid contains carbon atoms ranging from C5 to C500, and the mixing ratio with polyolefin does not exceed 5% by weight,

The cyclodextrin has a hollow inner diameter of 5 to 10 Å, an outer diameter of 14 to 17 Å, and a maximum mixing ratio with polyolefin of 10% or less,

The melt viscosity of the modified polyolefin is 0.7 to 800 g/10 min, and the polyolefin used in the applied product has a melt viscosity in the range of 0.5 to 1,500 g/10 min depending on the application, and the mixing ratio is 47% or less by weight.

As described above, the sanitary napkin equipped with an absorbent filter body according to the present invention includes an absorbent filter body that surrounds the wearer's hip bone, so that the sanitary napkin can be worn stably when worn and has the effect of preventing leakage of menstrual blood.

In addition, the absorbent layer that absorbs menstrual blood is formed by spraying cellulose fiber extracted from coconut shells, making it eco-friendly and soft to the touch while also providing UV protection.

Figures 1(a)(b) are schematic diagrams showing sanitary napkins and tampons according to the prior art.
Figures 2 to 4 are views showing a sanitary napkin equipped with an absorption filter body according to the present invention.
Figure 5 is a schematic diagram showing the process mechanism of the cellulose electrospinning method applied to the sanitary napkin equipped with the absorption filter body according to the present invention.
Figure 6 is a schematic diagram showing the formation of Tayor Cone and Jet according to Figure 5.
FIG. 7 is a diagram showing how the electrospinning jet according to FIG. 5 is spun into multiple strands.
Figure 8 is a schematic diagram showing electrospinning of a polymer solution in the nozzle according to Figure 5.
Figure 9 is a schematic diagram showing the principle of nanofiber formation according to Figure 5.
Figure 10 is a schematic diagram showing various porous materials according to Figure 5.

Hereinafter, a preferred embodiment of a sanitary napkin equipped with an absorption filter body according to the present invention will be described in detail with reference to the accompanying drawings.

In explaining the present invention, the front will refer to the side of the wearer's genitals or its direction when wearing a sanitary napkin, and the rear will refer to the opposite part or the direction.

In addition, the inside will be described as pointing to the wearer's body part or its direction, and the outside will be described as pointing to the opposite part or direction.

In addition, when describing the present invention, detailed descriptions of related well-known functions or configurations will be omitted in order to not obscure the gist of the present invention.

As shown, the sanitary napkin 100 with an absorption filter body according to the present invention has an absorption filter body 200 having a length that can be inserted between the wearer's hip bones when worn on the rear of the sanitary napkin 100. It consists of:

At this time, the absorption filter body 200 has a shape similar to that of a normal tampon, specifically a circular bar shape, and is configured to be seated on the inner rear of the sanitary napkin 100.

To this end, although not shown, the sanitary napkin 100 may have a groove formed at a position where the absorption filter body 200 is seated so that the user can stably seat the absorption filter body 200.

In addition, of course, if necessary, the absorption filter body 200 can be configured to be easily attached and detached from the sanitary napkin 100 using an adhesive or the like.

According to this configuration, the wearer can fundamentally prevent menstrual blood from leaking or flowing while walking or exercising by naturally inserting the absorption filter body 200 between the hip bones when wearing a sanitary napkin, and when wearing a conventional sanitary napkin, the wearer can fundamentally prevent menstrual blood from leaking or flowing. It compensates for the inconvenience of having difficulty fixing a sanitary napkin due to friction.

Meanwhile, among the elements constituting the sanitary napkin 100, the absorbent layer 100a for absorbing menstrual blood and the absorbent layer 210 constituting the absorbent filter body 200 may be made of pure cotton. In this case, the absorbent layer 100a may be made of pure cotton. (100a) consists of multiple layers.

In addition, some layers of the multi-layered absorption layer 100a and the absorption layer 210 of the absorption filter body 200 are made by spraying cellulose fibers extracted and manufactured by electrospinning by polymerizing monomers prepared through a fermentation process of coconut shells. It consists of layers.

2 to 4, an embodiment of the sanitary napkin 100 equipped with the absorption filter body 200 according to the present invention will be described as follows.

The sanitary napkin 100 equipped with the absorption filter body 200 according to the present invention has a multi-layered absorption layer 100a, and has a tampon-shaped absorption filter body with a length that can be seated on the rear and wrap around the wearer's hip bone. It consists of (200).

Specifically, the multi-layered absorption layer 100a has a layer 110 that is provided with a bamboo charcoal negative ion chip for removing odor and promoting blood circulation and is in contact with the wearer's body, and is located on the outside of the bamboo charcoal negative ion chip layer 110. It is made of pure cotton and has a first soft cover layer (120) to protect sensitive skin.

In addition, it covers the first soft cover layer 120 and has a second soft cover layer 130 on the outside made of pure cotton to protect sensitive skin.

Next, on the outside of the second soft cover layer 130, there is a layer 140 in which cellulose fibers extracted from coconut shells are sprayed.

In addition, an absorber 150 of pulp material is provided outside the cellulose layer 140, and an air filling 160 is provided outside the absorber 150 to prevent backflow.

It also has a central absorbent layer 170 to prevent backflow and an eco-friendly finish layer 180 to block moisture and allow air ventilation.

Next, an outer fabric 190 using non-woven fabric is provided on the outside of the eco-friendly finishing layer 180.

The sanitary napkin 100 equipped with the absorption filter body 200 according to the present invention configured as described above has a layer made by spraying cellulose fibers extracted from coconut shells in forming the absorption layer 100a, so it is environmentally friendly and has a good tactile feel of the product itself. It is soft yet has UV blocking effect.

Meanwhile, the cellulose fiber applied to the sanitary napkin 100 equipped with the absorption filter body 200 of the present invention is a nanofiber with a diameter of 1㎛ (1,000㎚) or less and is manufactured by electrospinning.

Specifically, the electrospinning method is a process that produces a nonwoven fabric of nanofibers by emitting a millimeter-diameter polymer melt or polymer solution at high voltage through a spinneret.

Referring to Figures 5 to 10, the electrospinning process can be broadly divided into four areas: nozzle (base), jet (jet), spray, and collector.

The first nozzle area is where a jet is formed from the polymer solution or melt. Before voltage is applied, the polymer solution hangs in the form of a spherical droplet due to surface tension at the end of the nozzle. As voltage is applied, an electric charge is introduced to the surface of the droplet and is sprayed from the tip of the droplet, which is called a Taylor cone.

The hemispherical surface of the solution suspended at the end of the capillary is stretched into a conical shape known as a Taylor cone. At a certain critical electric field strength (Vc), this repulsive electrostatic force overcomes the surface tension and a jet of charged polymer solution is ejected from the end of the Taylor cone. .

As the axial velocity of the Taylor cone accelerates, a tapering cone-shaped jet is formed. The second region is the jet region. In this region, the jet decreases in diameter and increases in length. The jet moves by the electrical potential difference supplied between the polymer solution or melt and the current collector.

The injection area is an area that occurs because the radiation force of the electric charge brought by the thinner and longer jet is greater than the adhesive force within the jet.

At low electric fields, a single jet is formed, tapering uniformly, and flies from the end of the capillary to the current collector.

However, in high electric fields, the jet soon becomes unstable after flying only a short distance, and the instability region of the jet shows an inverted cone shape in which one initial jet appears to break up to form numerous jets.

One jet is divided into many jets depending on their diameter and charge per unit length.

Lastly, the current collector area is an area where many ultrafine fibers are seated on the winding roller. Numerous ultrafine fibers are gathered together without a certain direction and solidified into a web. If a volatile solvent is used, ultrafine fibers are collected on the roller due to solvent evaporation during spraying, but if a non-volatile solvent is used, the fibers are washed with water or an appropriate solvent and dried.

Very thin cellulose fibers can be manufactured using this electrospinning method.

Meanwhile, cellulose fibers manufactured by electrospinning have a very small fiber diameter, so they have a soft touch like baby skin, high specific surface area to weight characteristics, and high porosity.

The sanitary napkin 100 with an absorption filter body according to the present invention is manufactured through the electrospinning method described above on some layers constituting the absorption layer 100a and the absorption layer 210 constituting the absorption filter body 200. It is characterized by spraying cellulose fibers.

Accordingly, no conventional chlorine bleach is used in the filter material itself, and the cellulose is extracted from eco-friendly coconut shells extracted from forests, so it dries quickly when used by the wearer, absorbs and removes odors easily, and the product itself is soft to the touch. It has a delicate and light effect.

Additionally, it has the UV-blocking effect that coconut shells have.

In addition, it is completely harmless to the human body as it is a natural raw material obtained from eco-friendly cultivation.

Meanwhile, the absorption filter body 200 of the sanitary napkin 100 equipped with the absorption filter body according to the present invention preferably has a length of 25 to 28 cm.

If it is less than 25cm, it may not completely cover the wearer's hip bone, which may cause menstrual blood to leak. If it is more than 28cm, it may deviate from the wearer's hip bone and cause discomfort when worn.

On the other hand, the sanitary napkin 100 equipped with an absorption filter body according to the present invention is a polymer produced by polymerizing monomers produced through a fermentation process using coconut shells in the absorption layers 100a and 210, which absorb menstrual blood. Since cellulose, a fiber, is used by spraying it on the absorbent layer of pure cotton, a natural material fired at high temperature, the raw material that makes up the absorbent layer is in the form of white powder (granules).

This type of granule has a porous structure and has the effect of physically adsorbing odorous components and rapidly adsorbing and drying them, completely eliminating odor and discomfort caused by moisture in areas that come into contact with the wearer's body.

In addition, the sanitary napkin 100 equipped with an absorption filter body according to the present invention is made by synthesizing a modified polyolefin with a deodorizing function by covalently grafting polyolefin, cyclodextrin (CD), and carboxylic acid to the absorption layer. It can be used to make a polyolefin compound with a deodorizing function by mixing it with polyolefin to be used in the product to be applied.

At this time, the hydroxyl group of cyclodextrin (CD) reacts with the hydroxyl functional group of carboxylic acid, which is miscible with polyolefin, and is grafted onto the polyolefin through a covalent bond. The acid has the function of absorbing and neutralizing odor-producing materials.

In addition to these polyolefin compounds, cellulose, a fiber extracted from coconut shells using an electrospinning method, is sprayed onto the absorbent layers 100a and 210 by high-temperature firing.

At this time, carboxylic acid contains carbon atoms in the C5 to C500 scale and is miscible with polyolefin to create a stable compound, and the mixing ratio with polyolefin should not exceed 5% by weight.

The cyclodextrin (CD) grafted through this process is hollow and absorbs odor-generating materials due to its hydrophilic properties. The size varies depending on the shape, but the inner diameter of the hollow is in the range of 5 to 10 Å and the outer diameter is 14 to 17 Å. The mixing ratio with polyolefin should be at most 10% or less. The melt viscosity of the modified polyolefin is 0.7~800g/10min, and the polyolefin used in the applied product has a melt viscosity in the range of 0.5~1,500g/10min depending on the purpose, and the mixing ratio is suitable to be 47% or less by weight.

The present invention described above is limited to the above-described embodiments and attached drawings, as various substitutions, modifications and changes can be made by those skilled in the art without departing from the technical spirit of the present invention. It doesn't work.

100: Sanitary napkin
200: absorption filter body
100a: absorption layer
210: absorption layer

Claims (3)

The sanitary napkin 100 is configured to include an absorption filter body 200 at the rear of the sanitary napkin 100 with a length that can be inserted between the wearer's hip bones;
Monomers prepared through a fermentation process of coconut shells are polymerized in the absorption layer 100a for absorbing menstrual blood of the sanitary napkin 100 and the absorption layer 210 constituting the absorption filter body 200 by electrospinning. Spraying the extracted cellulose fibers,
After synthesizing a modified polyolefin with a deodorizing function by grafting polyolefin, cyclodextrin (CD), and carboxylic acid through a covalent bond, the modified polyolefin is mixed with the polyolefin to be used in the product to be applied, and the polyolefin compound with a deodorizing function is used in the absorbent layer. However,
The carboxylic acid contains carbon atoms ranging from C5 to C500, and the mixing ratio with polyolefin does not exceed 5% by weight,
The cyclodextrin has a hollow inner diameter of 5 to 10 Å, an outer diameter of 14 to 17 Å, and a maximum mixing ratio with polyolefin of 10% or less,
The melt viscosity of the modified polyolefin is 0.7~800g/10min, and the polyolefin used in the applied product has a melt viscosity in the range of 0.5~1,500g/10min depending on the application, and the mixing ratio is 47% or less by weight. A sanitary napkin with a filter body.
According to clause 1,
The absorption filter body 200,
A sanitary napkin with an absorption filter body, characterized in that it has a circular bar shape and is configured to be seated on the rear of the sanitary napkin (100). delete