KR102383114B1 - Hydrolyzable eco-friendly sanitary napkin - Google Patents

Abstract

The present invention relates to an eco-friendly sanitary napkin that is decomposed or biodegradable in water. It is biodegradable in the body, so it is possible to prevent environmental pollution problems.
In addition, it exhibits an antibacterial effect by harmful bacteria in the vagina, and suppresses the generation of odors caused by secretions, thereby exhibiting an excellent effect in terms of cleanliness.

Description

Water-degradable eco-friendly sanitary napkin {Hydrolyzable eco-friendly sanitary napkin}

The present invention relates to a water-degradable eco-friendly sanitary napkin, and more particularly, to a water-degradable eco-friendly sanitary napkin capable of preventing environmental pollution problems as the components of the sanitary napkin are decomposed in a large amount of water or are biodegradable in soil.

In general, sanitary napkins or panty liners are worn by women to efficiently process menstrual blood caused by physiological phenomena that occur every month, and are designed to absorb menstrual blood and keep the vagina clean. .

Most of the sanitary napkins are being improved in the direction of further improving the impermeability effect while making the thickness of the coating material having the effect of absorbing a large amount of secretions or the fluid impermeability of a pad with a small volume thinner.

The pad as described above contains a highly absorbent polymer in order to increase the ability to absorb secretions, and despite having a small volume, it has a high absorption rate and thus has a large absorption effect of secretions.

Menstrual blood secreted during women's menstruation contains menstrual blood, cellulosic substances, and mucinous substances. Although this menstrual blood is absorbed by the menstrual blood absorption pad of a sanitary napkin, it is absorbed and continues for a long time, which is advantageous for the propagation of various bacteria. There is a problem of sanitary and odor as it becomes an environment.

Therefore, the hygiene condition of the sanitary napkin is very important, and the prevention of bacterial propagation along with the absorption of menstrual blood and secretions is an essential requirement of the sanitary napkin.

The following is an example of a general sanitary napkin. As such, a sanitary napkin is used to hygienically treat menstrual blood bleeding during menstruation. and an impermeable, impermeable shell that is fusion-bonded with the endothelium and is inserted and fixed between the endothelium and the impermeable shell to absorb secretions such as menstrual blood that has passed through the endothelium; It is inserted and fixed, and is formed on the lower surface of the absorbent pad and the impermeable outer skin, and consists of an adhesive pad that fixes the sanitary napkin through adhesion with the inner surface.

The pulp absorbent body for absorbing the secretions as described above is inserted into an appropriate position between the endothelium and the impermeable outer skin, and the endothelium and the impermeable outer edge are joined by thermal fusion. The sanitary napkin constructed in this way absorbs the secretions that have passed through the endothelium through the absorbent pad.

The absorbent pad contains a polymer called superabsorbent polymer (SAP), and the superabsorbent polymer is a resin that absorbs water tens to hundreds of times its own weight. It absorbs more than cotton cloth and does not release water under moderate pressure, so it is most often used as diapers for infants, adults, and animals. The reality is that such articles are not biodegradable by themselves, so there is a problem of environmental pollution.

In order to prevent such a problem, sanitary napkins that can be dissolved in water or biodegradable in soil can prevent environmental pollution problems, and suppress odors caused by secretions, thereby exhibiting excellent effects in cleanliness development is needed for

(Patent Document 1) 10-2016-0022024 A1

It is an object of the present invention to provide a water-degradable eco-friendly sanitary napkin.

Another object of the present invention is to provide a water-degradable eco-friendly sanitary napkin capable of preventing environmental pollution by decomposing a sanitary napkin to be discarded after use into the toilet by decomposing it by a large amount of water in a septic tank.

Another object of the present invention is to provide a water-degradable eco-friendly sanitary napkin capable of preventing environmental pollution problems by biodegrading the sanitary napkin to be discarded after use in soil.

Another object of the present invention relates to a water-degradable eco-friendly sanitary napkin that exhibits an antibacterial effect by harmful bacteria in the vagina and can exhibit an excellent effect in terms of cleanliness by suppressing the generation of odor due to secretions.

In order to achieve the above object, a water-degradable eco-friendly sanitary napkin according to an embodiment of the present invention includes a permeable endothelium that is in contact with the skin and transmits menstrual blood; an impermeable shell that has the same size and shape as the endothelium and is fusion-bonded with the endothelium; a pulp absorbent body inserted and fixed between the endothelium and the impermeable skin to absorb menstrual blood that has passed through the endothelium; a water-soluble film between the pulp absorbent body and the impermeable outer skin for absorbing menstrual blood transmitted after being absorbed into the pulp absorbent body; and an adhesive pad that is fixed to the lower surface of the impermeable shell and fixes the sanitary napkin through adhesion with the inner surface, wherein the endothelium, the impermeable shell, the pulp absorbent body and the adhesive pad can be water-degradable or biodegradable.

One side of the impermeable shell is in contact with the water-soluble film, the other side is fixed with an adhesive pad, and one side of the impermeable shell in contact with the pulp absorber prevents the penetration of menstrual blood due to a water repellent effect, and the adhesive pad is fixed The other side of the permeable shell is easily absorbed by water and can be dissolved in water.

The impermeable shell is composed of pulp, and one surface of the impermeable shell is coated with collagen to prevent menstrual blood absorbed in the water-soluble film from leaking to the outside.

The pulp absorber may include a plurality of absorbent layers, and the absorbent layer may be made of a pulp material.

Wings are formed on both sides of the adhesive pad, and an adhesive layer may be formed on one surface of the wing for adhesion to the inner surface.

The adhesive layer may include a hydrocarbon resin.

An antibacterial pad positioned between the endothelium and the pulp absorbent body and capable of removing the odor of menstrual blood before the menstrual blood passing through the endothelium is absorbed into the pulp absorbent body may be further included.

The water-degradable eco-friendly sanitary napkin is packaged with pulp paper or a water-soluble film, and the pulp paper or water-soluble film for packaging may be hydrolyzed or biodegradable.

According to the water-degradable eco-friendly sanitary napkin of the present invention, if the sanitary napkin to be discarded after use is put into the toilet, it is decomposed by a large amount of water in the septic tank and biodegraded in the soil, thereby preventing environmental pollution.

In addition, it exhibits an antibacterial effect by harmful bacteria in the vagina, and suppresses the generation of odor by secretions, thereby exhibiting an excellent effect in terms of cleanliness.

1 is a product photograph of a water-degradable eco-friendly sanitary napkin according to an embodiment of the present invention.
2 is a photograph showing the absorption effect and the impermeability effect of the water-degradable eco-friendly sanitary napkin according to an embodiment of the present invention.
3 is an experimental result of water degradability according to an embodiment of the present invention.
4 is an experimental result of water decomposition according to an embodiment of the present invention.
5 is a result of checking whether the water-degradable eco-friendly sanitary napkin is clogged in the toilet according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily carry out the present invention. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein.

A water-degradable eco-friendly sanitary napkin according to an embodiment of the present invention includes a permeable endothelium that is in contact with the skin and transmits menstrual blood; an impermeable shell that has the same size and shape as the endothelium and is fusion-bonded with the endothelium; a pulp absorbent body inserted and fixed between the endothelium and the impermeable skin to absorb menstrual blood that has passed through the endothelium; a water-soluble film between the pulp absorbent body and the impermeable outer skin for absorbing menstrual blood transmitted after being absorbed into the pulp absorbent body; and an adhesive pad fixed to the lower surface of the impermeable shell and fixing the sanitary napkin through adhesion with the inner surface, wherein the endothelium, the impermeable shell, the pulp absorbent and the adhesive pad may be decomposed or biodegradable.

The endothelium, impermeable outer shell, pulp absorbent body, water-soluble film, and adhesive pad constituting the eco-friendly sanitary napkin of the present invention are either completely decomposed in a large amount of water or biodegraded in soil, so they are environmentally friendly and have excellent absorption of secretions, which are the basic roles of the sanitary napkin. And it is possible to suppress the antibacterial effect and odor generation.

Conventional sanitary napkins are a major culprit of environmental pollution due to the enormous amount of waste that has been thrown away, and many problems have occurred due to the fact that environmental hormones such as dioxin, which are carcinogens, are generated.

The biggest problem with regular sanitary napkins is the use of chemicals. In the case of commercially available sanitary napkins, polyethylene film, absorbent paper, nonwoven fabric, cotton pulp, and polymer absorbent are indicated as main ingredients, but more are classified as manufacturing secrets and are not disclosed. Disposable sanitary napkins are classified as 'infectious waste' after use and buried in the ground. At this time, chemicals such as chlorine-based bleach seep into the ground and rivers, causing environmental pollution.

Assuming that a woman menstruates 500 times over 37 years from the age of 13 to 50 and uses an average of 5 sanitary napkins a day for 5 days, she will use about 11,000 sanitary napkins in her lifetime.

Disposable sanitary napkins are easily used and thrown away, but the amount is so great that 2 billion disposable sanitary napkins are thrown away every year, and when they are laid out, they reach 20,000 km.

In addition, to produce 11,000 sanitary napkins, it is said that it is possible only by destroying a forest the size of Yeouido every year.

As mentioned earlier, disposable sanitary napkins not only destroy the environment but also adversely affect women's health. Recently, bugs were found in some products, or there were problems such as detection of formaldehyde.

In response to this problem, a method of using an alternative sanitary napkin has been recently discussed, and it is known to use a pad-type cotton sanitary napkin or to use an insert-type alternative sanitary napkin.

Pad-type cotton sanitary napkins are sanitary napkins that are made from cloth and can be washed and used continuously. These cotton sanitary napkins have little skin irritation and are eco-friendly products that can be used multiple times, but there is a problem in that they are difficult to clean after use.

In addition, the implantable alternative sanitary napkins are sold in two types: the Keeper made of natural rubber and the Moon Cup made of silicone. It can be used multiple times like a cotton sanitary napkin, but due to the nature of the material, it must be stored in a cool place, and cleaning is cumbersome.

Accordingly, in the present invention, there is no significant difference in composition from the conventional sanitary napkin, but all of the constituent parts are configured to be degradable in water or biodegradable in soil, thereby preventing the occurrence of environmental problems.

The water-degradable eco-friendly sanitary napkin according to an embodiment of the present invention includes an endothelium, an impermeable outer skin, a pulp absorbent body, and an adhesive pad, and the endothelial, impermeable outer skin, pulp absorbent body and adhesive pad are made of pulp, and put into the toilet or , it can be easily disposed of by embedding it in the soil.

That is, if you put it in the toilet and flush the water, it is moved to the septic tank by water pressure, and then moved to a sewage treatment plant for treatment.

After using the water-degradable eco-friendly sanitary napkin of the present invention, if you put it in the toilet and flush the water, when it comes into contact with water, the inner skin, impermeable outer shell, pulp absorber, water-soluble film and adhesive pad absorb water and release it through decomposition action This phenomenon occurs, and then, when it is moved to the septic tank by water pressure, it is completely decomposed and can be easily purified in the septic tank and sewage treatment plant.

In addition, when the sanitary napkin is thrown into the toilet, the problem of clogging the toilet does not occur because the shape is loosened due to the absorption of water when in contact with water, and the complete loosening phenomenon occurs due to water pressure.

In general, if a large amount of toilet paper is thrown into the toilet or thrown away that does not dissolve in water, the drain pipe from the toilet to the septic tank is clogged.

If the drain pipe is clogged, there is a problem that a backflow phenomenon occurs when using the toilet.

Recently, toilet paper is easily released when thrown into most toilet bowls, so there is no clogging problem in the drain pipe. This is because the water pressure becomes strong when moving to the drain pipe, and the problem of clogging the drain pipe does not occur as the shape of the toilet paper is easily released. has been resolved

Tissue paper is composed of pulp, so it easily absorbs water, and the loosening phenomenon that does not maintain its shape due to absorption of water easily occurs.

In general, products such as paper made from pulp can easily absorb water, but when a special treatment is performed, it can exhibit water repellency, so it can be manufactured without being easily dissolved in water.

The inner skin, impermeable outer skin, pulp absorbent body, and adhesive pad constituting the water-degradable eco-friendly sanitary napkin of the present invention are all made of pulp, so they easily absorb water, and loosening occurs easily in a large amount of water, thereby exhibiting water decomposition. .

The pulp has the property of absorbing water easily, so when used as a sanitary pad, it can easily absorb menstrual blood and maintain the state in which the absorbed menstrual blood is supported.

In addition, when placed in the toilet, it comes into contact with a large amount of water, and the water pressure directly acts on the sanitary napkin, and in this case, it has a property of easily unraveling its shape.

It is important to show the performance of absorbing menstrual blood well and supporting it without leaking to the outside.

That is, in order to prevent the absorbed menstrual blood from leaking to the outside, a polymer absorbent is used for the pulp absorber, and the impermeable pad is made of a plastic material with excellent impermeability such as vinyl to prevent the outflow of menstrual blood. .

However, as described above, as in the conventional sanitary napkins, when a polymer absorbent material and a polyethylene film are used as main components, in addition to environmental pollution problems due to disposal after use, air permeability is poor when the sanitary napkin is used, causing bacterial growth, Problems such as vaginitis and dermatitis can easily occur.

In the present invention, as the pulp material is used, this problem can be easily prevented due to the breathability, which is a characteristic of the pulp material.

In addition, the pulp absorbent body is composed of a plurality of absorbent layers of pulp material, so that a large amount of menstrual blood can be sufficiently supported.

In addition, the absorbent layer of the first layer is configured to have a density of 80 to 120 g/m ² , and the pulp absorber may include 5 to 10 absorbent layers, but is not limited to the above example, and the absorbent layer constituting the pulp absorber The number of is easily selectable within a range that can be expected for a person skilled in the art to use to an extent capable of holding menstrual blood.

As described above, the absorbent pad, which is the most important element for sanitary napkins, does not contain a separate polymer absorbent material, but consists only of an absorbent layer of pulp material. , it is possible to prevent the occurrence of vaginitis or dermatitis in advance.

In addition, since it is composed of a plurality of dense absorbent layers, it can be sufficiently supported regardless of the amount of menstrual blood, and it will be said that sufficient menstrual blood can be absorbed by the absorbent pad.

The permeable endothelium is a surface in direct contact with the skin of the human body when the sanitary napkin is used, and serves to prevent skin irritation, and to allow menstrual blood to easily permeate and be delivered to the pulp absorbent body.

The endothelium of the present invention is composed of a pulp material, and is configured to have a density of 30 to 40 g/m ² , has excellent permeability, and is made of a pulp material processed to have a soft contact surface to prevent skin irritation.

At this time, in order to increase the permeability, if a pulp material having a density of less than 30 g/m ² is used, the durability is weak. problems may arise.

In order to prevent this problem, a pulp material having a density of 30 to 40 g/m ² is used, and at the same time, the problem of durability is solved, skin irritation is lowered, and menstrual blood can be easily absorbed by the pulp absorbent body.

Between the endothelium and the pulp absorbent body, the present invention is characterized in that it further comprises an antibacterial pad capable of removing the smell of menstrual blood before the menstrual blood that has passed through the endothelium is absorbed into the pulp absorbent body.

The antibacterial pad is configured so that menstrual blood that has passed through the endothelium can easily move to the pulp absorbent body, and the odor of menstrual blood is easily removed through the antibacterial pad. infection problems can be prevented.

The antibacterial pad is composed of a pulp material, and both sides are coated with an antibacterial composition composed of a natural extract.

The sanitary napkin of the present invention is characterized in that it does not contain chemical compounds to provide an eco-friendly sanitary napkin.

The antibacterial composition may be selected from the group consisting of persimmon leaf extract, dermis extract, green tea extract, banana peel extract, and mixtures thereof. Preferably, a mixed extract of the persimmon leaf extract, dermis extract, green tea extract and banana peel extract may be included as an active ingredient.

The persimmon tree (Diospyros kaki Thunb) is mainly distributed in the central and southern regions of Korea, and in addition to the reproductive Shija, the leaves, Shihwa, and corpses have been used as folk remedies since ancient times. Among them, persimmon leaves are mainly used as tea, and it is recorded that it is effective for purpura (vascular inflammation) as well as prevention and treatment of vascular diseases in Dongdong Bogam. Persimmon leaves contain various substances such as vitamin C, amino acids, nucleic acids, phenolic compounds, and free sugar. As flavonoids of persimmon leaves, glycoside forms such as astragalin, a glycoside of kaempferol, and myricitrin, isoquercitrin, a glycoside of myricetin, a glycoside of myricetin exist. Persimmon leaves have a total phenolic compound content of 0.1 to 5.8%, which is higher than that of other plants, and has excellent antioxidant and antibacterial properties, and is known to be involved in superoxide dismutase (SOD) activity. In addition, pharmacological effects have been verified for maintaining skin elasticity and preventing colds and adult diseases, and it strongly suggests the possibility that various substances can affect human physiological mechanisms. Phenolic compounds are reported to be effective in not only antioxidant functions but also antibacterial, anti-allergic, caries prevention, heart disease and diabetes prevention, and include flavonoids, phenolic acid, phenyl propanoid, and quinones.

Citri Pericarpium is the dried rind of the mature fruit of Citrus unshiu Markovich, an evergreen small arboreous tree belonging to the rutaceae family. According to the Korean Pharmacopoeia, the content of hesperidin, a major flavonoid component, is known to be more than 4%, and in addition, naringin and neohesperidin are included. It is used for gastritis, indigestion, etc. as an aromatic dry placebo, and is used as an antitussive, antitussive, and expectorant.

Hamcho grows in groups on the seashore, mudflats, and salt fields of island regions such as the west coast, southern coast of Korea, Jeju-do, Ulleungdo, and Baengnyeong-do. In Korean, it is called tung-tung-se because it is lumpy and protruding from every joint. In the ancient Chinese medical book, Shennongchobongyeong, it was called green tea (鹹草) and salt vinegar (鹽草) because it tasted very salty. It has been known since the Zhou Dynasty of China 3,000 years ago that green tea has excellent efficacy as a health food. There is a record in the Jurye (周禮) that the king of the Zhou dynasty offered green tea to the heavens and held a ancestral rite. In Kaibara's <Daehwaboncho>, which is called Japan's Uiseong, it is written that green tea is a precious herb that makes it immortal. The general components of green tea are mainly carbohydrates, ash, crude protein, and crude fat, and salt accounts for 13.5% of the ash by weight. In addition, green tea contains various minerals. It is known that 100 g of green tea contains 670 mg of calcium, 70 mg of iodine, and 6.5% of sodium, 16% of salt, and 50% of vegetable fiber.

Banana is a perennial herb originating from tropical and subtropical Asia. In Taiwan, bananas are mainly planted in Kaohsiung, Tainan, Pingtung and Taitung. Generally, the edible part of a banana is the flesh part and the peel is discarded.

The preparation of the natural extract comprises the steps of pulverizing a natural product; leaching the pulverized product using a solvent; drying the sample after leaching; re-leaching the dried sample using a solvent; drying the sample after leaching; leaching with water; And including the step of leaching, it is possible to obtain a natural extract.

The method may further include performing fractionation of the natural extract extracted using the solvent using a solvent.

The method for preparing the extract may be a conventional extraction method in the art, such as an ultrasonic extraction method, a leaching method, and a reflux extraction method. Specifically, it may be an extract obtained by extracting a natural product from which foreign substances have been removed by washing and drying with water, an alcohol having 1 to 6 carbon atoms, or a mixed solvent thereof, or may be an extract extracted by sequentially applying the solvents to the sample.

The extraction solvent may be used in an amount of 2 to 50 times, more specifically, 2 to 20 times, based on the weight of the sample. For extraction, the sample may be left for 1 to 72 hours for leaching in the extraction solvent, and more specifically, for 24 to 48 hours.

After extraction, the extract may be fractionated by sequentially applying a fresh fractionation solvent. The fractionation solvent used for fractionation may be selected from the group consisting of water, hexane, butanol, ethyl acetic acid, ethyl acetate, methylene chloride, and mixtures thereof.

After obtaining the extract or fraction, a method such as concentration or freeze-drying may be additionally used.

Preferably, the persimmon leaf extract, dermis extract, green tea extract and banana peel extract may be persimmon leaf hot water extract, dermis hot water extract, green tea hot water extract and banana peel hot water extract.

It is intended to prevent the possibility of skin irritation due to the natural extract using the organic solvent by using water as an extraction solvent without using an organic solvent such as alcohol, which is typically used in the preparation of natural extracts.

Preferably, the antibacterial composition may include, based on 100 parts by weight of the persimmon leaf extract, 50 to 100 parts by weight of the dermis extract, 10 to 20 parts by weight of the green tea extract, and 10 to 20 parts by weight of the banana peel extract. When used within the above mixing range, in addition to the antibacterial effect, it may exhibit an excellent odor removal effect on menstrual blood.

More preferably, the antibacterial composition is a powder form of persimmon leaf extract, dermis extract, green tea extract and banana peel extract mixed with water as a solvent, sprayed on an antibacterial pad, and dried to form an antibacterial layer. can

The method of forming the antibacterial layer is not limited to the spray spray method, and a person skilled in the art selects a method of forming the antibacterial layer using the antibacterial composition, and can be used without limitation.

The water-degradable eco-friendly sanitary napkin of the present invention includes an impermeable outer shell having the same size and shape as the endothelium and fusion-bonded with the endothelium, wherein one side of the impermeable outer skin is in contact with the water-soluble film and the other side is fixed with an adhesive pad .

One side of the impermeable shell in contact with the water-soluble film prevents the permeation of menstrual blood due to a water repellent effect, and the other side of the impermeable shell to which the adhesive pad is fixed is easy to absorb water, so that it can be released in water.

delete

In the case of one side, if the sanitary napkin used in the toilet is thrown away, the side in direct contact with water easily absorbs water and loosening may occur.

In the case of a conventional sanitary napkin, the absorbent pad is made of a polymer film, and both sides exhibit an impermeable effect, thereby preventing the problem of the sanitary napkin absorbed through the absorbent pad leaking to the outside.

That is, firstly, it is possible to prevent leakage to the outside of the absorbent pad by maximally absorbing it using the absorbent material in the pulp absorber, and secondly, it is possible to prevent leakage to the outside by using an impermeable pad made of a polymer film.

However, when the absorbent material or polymer film is used in this way, it is possible to prevent the leakage of menstrual blood to the outside due to the use of the sanitary napkin, but as mentioned above, various problems may occur.

Accordingly, in the present invention, it is possible to prevent the menstrual blood absorbed from the pulp absorbent from leaking to the outside by using the impermeable shell.

However, not only the impermeable shell, but between the pulp absorbent body and the impermeable shell, in order to prevent the outflow of menstrual blood, a water-soluble film capable of absorbing a portion of menstrual blood transmitted after absorption into the pulp absorbent body is additionally included characterized in that

If a conventional sanitary napkin uses a polymer film to prevent water permeation, in the present invention, a water-soluble film is used to absorb menstrual blood, and by supporting it, the leakage of menstrual blood to the outside can be prevented.

The water-soluble film of the present invention is a polyvinyl alcohol (PVA) film, and exhibits water-soluble properties, can absorb a portion of menstrual blood that passes through the pulp absorbent, and maintains the state in which menstrual blood is supported for about 4 to 8 hours. .

The water-soluble film is configured to have a thickness of 1 to 2 mm to prevent the problem of lowering the fit of the sanitary napkin, and to be easily decomposed by water pressure when thrown into the toilet. However, it is not limited to the PVA film, and as long as it can be easily decomposed in a lot of water due to the material of the water-soluble film, it is not limited to the above example, and any water-soluble film of a thickness that a person skilled in the art can apply to a sanitary napkin can be used Do.

In addition, the impermeable outer shell is composed of pulp, and while maintaining the breathable effect, collagen is coated on one surface to exhibit hydrophobic properties.

The impermeable shell may be formed of a material in which a water repellent layer is formed on the pulp described above in a single-layer or multi-layer structure.

The impermeable shell is, with respect to 100 parts by weight of the pulp, 1 to 99 parts by weight of collagen to form a coating layer, preferably 3 to 50 parts by weight to form a coating layer, more preferably 7 to 15 parts by weight to form a coating layer can do.

The impermeable shell is intended to represent hydrophobicity in the pulp layer, and when used below the range value, the hydrophobic property is less expressed, and the effect of preventing the flow of menstrual blood supported on the water-soluble film may be insufficient, and the value of the above range If the coating treatment is excessive, the air permeation effect by the pulp is insufficient, and economic efficiency may be deteriorated.

In addition, the impermeable shell may include AKD (alkyl ketene dimer) or ASA (alkenyl succinic anhydride) for imparting hydrophobicity to the pulp itself, in addition to imparting hydrophobic properties by the collagen coating layer.

The AKD or ASA may be included in an amount of 0.3 to 0.7 parts by weight based on 100 parts by weight of the pulp, may be included alone or may be included in a mixture. When mixing, the weight ratio may be included in a weight ratio of 1:1.

The AKD or ASA is included to impart hydrophobicity to the pulp, and when it is used below the content range, the hydrophobicity falls, and when it is included in excess, a lot of bubbles are generated 　Environmental pollution and cost increase (excessive use of water) ,　After manufacturing, paper cutting and curling (paper curling) may occur, which may cause difficulties in the manufacturing process.

When the sanitary napkin is commercialized in consideration of the usage condition, when the sanitary napkin is used for a long time or when there is a lot of menstrual blood, when the pulp absorbent is composed only of the pulp material, there may be a problem that the menstrual blood leaks to the outside of the sanitary napkin.

Wings are formed on both sides of the adhesive pad, and an adhesive layer is formed on one surface of the wing for adhesion to the inner surface of the pad.

The adhesive layer may include a hydrocarbon resin (Hydrocarbon resin), but any material capable of adhesion other than the resin can be used, and the example is not limited thereto.

The water-degradable eco-friendly sanitary napkin is packaged with pulp paper or a water-soluble film, and the pulp paper or water-soluble film for packaging may be hydrolyzed or biodegradable.

The water-degradable eco-friendly sanitary napkin of the present invention has excellent hydrolysis or biodegradation effect of the sanitary napkin itself, and the wrapping paper is also hydrolyzable or biodegradable. It will be said that it can be easily solved through the method of

[Production Example 1]

Manufacture of water-degradable eco-friendly sanitary napkins

1. Preparation of impermeable skin

A coating layer is formed using collagen on one surface of the pulp material having a density of 50 to 60 g/m ² and containing 0.5 parts by weight relative to 100 parts by weight of the pulp, and heated in an oven preheated to 80 to 100° C. for 3 to 5 seconds Thus, an impermeable shell (AC1) was prepared.

The impermeable shell (AC1) is a collagen coating layer formed by using 7 parts by weight of collagen based on 100 parts by weight of pulp.

An impermeable shell (AC2) was prepared in the same manner as in AC1, except that the collagen coating layer was used in an amount of 15 parts by weight of the collagen.

As Control Example 1, a pulp material having a density of 50 to 60 g/m ² was used as an impermeable shell.

2. Manufacture of antibacterial pad

(1) Preparation of natural extracts

After the persimmon leaves were thoroughly washed and dried, they were pulverized using a pulverizer. Then, 50 g of crushed persimmon leaf was added to 500 ml of water at 90 to 100° C. and extracted with stirring for 3 hours. After filtration, the extract was concentrated under reduced pressure with a rotary vacuum evaporator (Eyela N-1N), and then freeze-dried persimmon leaf powder was prepared using a freeze dryer (FD SFDSM12, Samwon, Korea).

For dermis, green tea and banana peel, it was prepared as an extract using the same method as the persimmon leaf extract.

(2) Preparation of antibacterial composition

The persimmon leaf extract, dermis extract, green tea extract and banana peel extract were mixed in the ranges shown in Table 1 below to prepare a mixed extract, and the mixed extract was diluted in 10 times water to prepare an antibacterial composition.

AR1 AR2 AR3 AR4 persimmon leaves 100 100 100 100 dermis 30 50 70 100 green tea 5 10 15 20 banana peel 5 10 15 20

(unit weight parts)

(3) Preparation of antibacterial pad

The antibacterial composition of AR1 to AR4 was sprayed onto a pulp material having a density of 30 to 40 g/m ² , and dried to prepare an antibacterial pad.

3. Manufacture of water-degradable eco-friendly sanitary napkins

A pulp absorbent body was prepared by molding a pulp material having a density of 30 to 40 g/m ² into the inner shell, and stacking 5 to 10 absorbent layers having a density of 80 to 120 g/m ² .

The impermeable skin and PVA film coated with AC1 and AC2 were also molded into the shape of a sanitary napkin, respectively.

The antibacterial pads coated with AR1 to AR4 were also molded into the shape of a sanitary napkin, respectively.

A pulp material having a density of 80 to 120 g/m ² was molded to prepare an adhesive pad.

endothelium; antibacterial pad; pulp absorbent; PVA film; The impermeable outer shell and the adhesive pad were laminated in this order, and the inner shell and the adhesive pad were adhered using an adhesive. Thereafter, an adhesive layer was formed with a hydrocarbon resin on the wing portion of the adhesive pad.

The sanitary napkin according to an embodiment of the present invention was manufactured in the shape shown in FIG. 1 . It is not limited to the above shape, and can be manufactured in any shape of a commercially available sanitary napkin.

[Experimental Example 1]

Menstrual blood absorption effect and impermeability effect

In order to confirm the absorption and impermeability of menstrual blood, about 50 ml of water diluted with red ink was prepared. The average amount of menstrual blood that comes out during one menstrual period of an average woman is 80ml, and at most is 100ml to 150ml.

Considering the usage status of the sanitary napkin, the amount of menstrual blood during the replacement period was predicted to be about 30ml, and the ability to absorb more water than the corresponding amount and the impermeability effect were confirmed.

As shown in FIG. 2, water was sprayed on the sanitary napkin, and it was checked whether the sanitary napkin was sufficiently absorbed and whether it leaked from the opposite side.

All of the pulp absorbent materials were prepared in the same manner with 10 absorbent layers, and only the impermeable outer shell was changed to AC1, AC2, and Control Example 1, and then the experiment was conducted.

As another control example 2, the impermeable outer shell of the sanitary napkin was the same as AC1, but did not include the PVA film, and the same experiment was performed.

As in FIG. 2 , when all of them were well absorbed, the absorption was indicated by O, and the case where the absorption was not performed was indicated by X.

In addition, when red water is observed from the opposite side, it is indicated by ○ in impermeability, and when it does not leak to the outside as shown in FIG. 2, it is indicated by X.

In particular, in the case of impermeability, it was checked whether leakage to the outside was divided into immediately after the experiment and after 4 hours had elapsed.

AC1 AC2 Control Example 1 Control Example 2 absorption ○ ○ ○ ○ impermeability Immediately X X ○ X after 4 hours X X ○ ○

As a result of the experiment, as all the pulp absorbent materials were kept the same, the absorption effect was confirmed to be the same, but in the impermeability effect, a difference occurred depending on whether a water repellent layer was formed immediately after the experiment proceeded. That is, in the case of Control Example 1 in which the water repellent layer was not formed, it was confirmed that the red ink leaked to the outside and stained the hand, and in the case of AC1, AC2 and Control Example 2, this staining phenomenon did not occur.

However, in consideration of the state of use of the sanitary napkin, in the experiment to determine whether the impermeability effect is maintained even after 4 hours, in the case of Control Example 2, unlike AC1 and AC2, it was confirmed that the red ink leaked to the outside.

Since Control Example 2 does not include the PVA film, the ink leaking from the absorber is not supported, and the ink may leak out over time.

[Experimental Example 2]

Check for water loosening

An experiment was conducted to confirm the water loosening phenomenon of the sanitary napkin. For the impermeable skin, AC1, AC2, Control Example 1 and Control Example 2 of the present invention were used.

Considering the water pressure in the toilet, the degree of dissolution of water was checked to determine whether loosening occurred when it was put in water and not stirred, and whether loosening occurred when stirred with a spoon.

Finally, in consideration of the actual use condition, it was also checked whether or not a clogging phenomenon occurred when the toilet was put into the toilet and flushed.

3 is an example of a case in which the loosening phenomenon occurs in water, and FIG. 4 is an example of a case in which the loosening phenomenon does not occur in the water.

5 is a photograph captured by an experiment video showing whether or not the toilet clogging occurs when the sanitary napkin of the present invention is put into the toilet and flushed.

AC1 AC2 Control Example 1 Control Example 2 left in water △ △ △ △ put in water and stir ○ ○ ○ ○ Is the toilet clogged? X X X X

According to the experimental results, it was confirmed that all of the sanitary napkins of the present invention loosened when the impermeable outer shell was used as AC1, AC2, Control Example 1 and Control Example 2. However, in the case of the pulp absorber, when left alone in simple water as shown in FIG. 4, the loosening phenomenon did not occur completely, but it was confirmed that the loosening phenomenon occurred when lightly stirred with a spoon.

[Experimental Example 3]

Antibacterial effect test

For the evaluation of antibacterial properties, fungi were inoculated into sanitary napkins prepared in the same manner except for the antibacterial pad except for the other conditions, and the concentration of the bacteria was measured after 24 hours. The results are shown in Table 2 below.

This fungus is known to cause infection of Kindida vaginitis. The antibacterial effect of the fungus was tested.

Initial concentration (CFU/mL) log (CFU/mL) after 6 hours Bacterial reduction rate (%) comparative example 1.00× ^{10 5} 8.00× ^{10 5} - AR1 1.00× ^{10 5} 8.00× ^{10 5} - AR2 1.00× ^{10 5} 0 100 AR3 1.00× ^{10 5} 0 100 AR4 1.00× ^{10 5} 0 100

(CFU is a conceptual indication of the number of bacteria) According to Table 2, when the antimicrobial composition is not coated on the antibacterial pad or the antimicrobial composition mixed within the range of the present invention is coated, the concentration of the fungus increases was confirmed.

On the other hand, when the antibacterial composition of the present invention was used, it was confirmed that the concentration of the fungus was reduced, thereby confirming the excellent antibacterial effect.

[Experimental Example 4]

sensory evaluation

For the sanitary napkins according to an embodiment of the present invention, for 15 women in their twenties, 3 people were set as 1 group, and sensory evaluation was performed for 5 groups.

We asked for confirmation of wearing comfort, absorption level, odor generation, and menstrual blood leakage. The evaluation was requested on a score of 1 to 5, and the higher the evaluation score, the better the evaluation.

The provided sanitary napkins were prepared as antibacterial pads AR1 to AR4 and Comparative Examples, respectively, and all other layers were the same except for the antibacterial pad.

AR1 AR2 AR3 AR4 comparative example fit 5 4.5 4.5 5 4.5 Absorption 4.5 5 4.5 5 4.5 smell 2 4 4.5 5 One Whether menstrual blood leaks 5 5 5 5 5

According to the evaluation results, it was confirmed that the wearing comfort, the degree of absorption, and the leakage of menstrual blood all received excellent evaluations. As a result of inquiring about whether to purchase when selling as an actual product, in AR2 to AR4 groups, if the price is not too expensive, the purchase intention was evaluated as high.

However, in the case of AR1 and the Comparative Example group, it was confirmed that the smell of menstrual blood was easily felt and thus received a very low evaluation from the smell, and it was also confirmed that the purchasing doctor received a low evaluation.

Although preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention as defined in the following claims are also provided. is within the scope of the

Claims (8)

permeable endothelium that is in contact with the skin and permeates menstrual blood;
an impermeable shell that has the same size and shape as the endothelium and is fusion-bonded with the endothelium;
a pulp absorbent body inserted and fixed between the endothelium and the impermeable skin to absorb menstrual blood that has passed through the endothelium;
a water-soluble film between the pulp absorbent body and the impermeable shell for absorbing menstrual blood that is transmitted after being absorbed into the pulp absorbent body; and
and an adhesive pad fixed to the lower surface of the impermeable outer skin and fixing the sanitary napkin through adhesion with the inner surface;
The endothelium has a density of 30 to 40 g/m ² ,
The pulp absorbent body includes a plurality of absorbent layers, wherein the absorbent layer has a density of 80 to 120 g/m ² ,
The impermeable shell contains 0.3 to 0.7 parts by weight of AKD or ASA based on 100 parts by weight of the pulp,
The water-soluble film is a polyvinyl alcohol (PVA) film, and the endothelium, the impermeable outer skin, and the adhesive pad include pulp paper,
The polyvinyl alcohol (PVA) film and pulp paper, characterized in that it absorbs water and dissolves in water or biodegrades in soil.
Water-degradable eco-friendly sanitary napkin. The method of claim 1,
One side of the impermeable shell is in contact with the water-soluble film,
On the other side, the adhesive pad is fixed,
One side of the impermeable outer shell in contact with the water-soluble film prevents the permeation of menstrual blood with a water-repellent effect,
The other side of the impermeable outer shell to which the adhesive pad is fixed is easy to absorb water, so it is easy to dissolve in water.
Eco-friendly sanitary pad. The method of claim 1,
the impermeable shell is composed of pulp,
One side of the impermeable shell is coated with collagen to prevent the menstrual blood absorbed in the water-soluble film from leaking to the outside
Eco-friendly sanitary pad. The method of claim 1,
The pulp absorbent body is composed of a plurality of absorbent layers,
The absorbent layer is made of a pulp material.
Eco-friendly sanitary pad. The method of claim 1,
The adhesive pad has wings formed on both sides,
One surface of the wing portion is formed with an adhesive layer for adhesion with the inner surface
Eco-friendly sanitary pad. 6. The method of claim 5,
The adhesive layer includes a hydrocarbon resin
Eco-friendly sanitary pad. The method of claim 1,
located between the endothelium and the pulp absorbent body,
An antibacterial pad that can remove the smell of menstrual blood before the menstrual blood that has passed through the endothelium is absorbed into the pulp absorber.
Eco-friendly sanitary pad. The method of claim 1,
The water-degradable eco-friendly sanitary napkin is packaged in pulp paper or water-soluble film,
The pulp paper or water-soluble film for packaging is water-degradable or biodegradable
Eco-friendly sanitary pad.

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