KR20100011635U - Disposable absorbent articles comprising Nature-friendly natural materials - Google Patents

Abstract

The present invention provides a disposable absorbent article comprising a liquid permeable topsheet, a liquid impermeable backsheet, and an absorbent pad positioned between the topsheet and the backsheet, wherein the topsheet is composed of an organic fiber nonwoven fabric and the backsheet is biodegradable. It is composed of a resin, the absorbent pad relates to a disposable absorbent product, characterized in that composed of a natural absorbent and natural absorbent pulp. Disposable absorbent products of this invention are beneficial to the wearer's physical health by preventing the development of menstrual eczema or pruritus because synthetic fibers and chemical products are not used. It can be decomposed into an environmentally friendly product.

Disposable Absorbents, Biodegradable Films, Organic Fiber Nonwovens, Natural Absorbers

Description

Disposable absorbent articles comprising Nature-friendly natural materials}

The present invention is a disposable absorbent product, due to the use of environmentally friendly natural materials such as natural fibers and natural absorbents to prevent the skin diseases of the wearer, while reducing environmental pollution, while absorbing the same level of secretion as conventional disposable products It relates to an excellent disposable absorbent product having a.

Generally, disposable absorbent products are products for absorbing secretions of the human body, for example, blood, urine, and menstrual blood. Specifically, the structure of the female sanitary napkin, which is one of the disposable absorbent products, is shown in FIG. 1, and a cross-sectional view taken along line “A-A” of the female sanitary napkin of FIG. 1 is shown in FIG. 2. As shown in Figures 1 and 2, the general sanitary napkin is made of the same size and shape as the liquid permeable top sheet 10, the top sheet 10 in contact with the skin and permeate secretions are fused and bonded to the top sheet 10 Absorption 30 for absorbing secretion, such as menstrual blood that penetrated between the top sheet 10, the top sheet 10 and the back sheet 20 to penetrate the liquid impermeable back sheet 20, absorbent pad 30 It is formed in the lower portion of the absorbent pad 30 and the back sheet 20 is inserted and fixed at an appropriate position between the top sheet 10 and the adhesive portion 40 for fixing the sanitary napkin through the adhesion with the inner surface. Similar to the structure of the sanitary napkin, the disposable absorbent article also consists of a liquid permeable topsheet, a liquid impermeable backsheet, and an absorbent pad positioned between the topsheet and the backsheet. Disposable absorbent products having such a structure are used for the purpose of absorbing and storing the secretions such as blood, urine, and menstrual blood secreted by the human body, and for the purpose of cleaning the back finish, the upper sheet and the absorbent pad have high hygroscopic pulp (synthetic fiber). ) As the main raw material, and the lower sheet is composed of liquid impermeable pulp (synthetic fiber) as the main raw material to prevent the absorbed secretion from leaking to the outside. In particular, the absorbent pad of the disposable absorbent product currently on the market is composed of a polymer absorbent, which is a highly absorbent resin made from synthetic chemicals such as acrylic acid polymer or polyvinyl alcohol as a raw material. Synthetic fibers and polymer absorbents used in these disposable absorbent products are processed by a large amount of bleach, so they contain harmful ingredients, which can cause itchiness and swelling and swelling if they come into direct contact with the skin. In particular, the vagina of women has a tendency to attract external substances strongly, there is a problem that harmful components can be absorbed into the human body. In addition, due to the strong absorption of the polymer absorbent can absorb the harmless moisture in the vagina in addition to the secretions such as menstrual blood can cause vaginal dryness. However, in spite of these problems, due to the convenience of use today, a large amount of disposable absorbent products of pulp materials containing harmful components to the human body are used.

In order to solve the above problems, there have been attempts to develop disposable absorbent products in which synthetic fibers are replaced with natural fibers. For example, Korean Utility Model Registration No. 20-0360794 discloses a cotton sanitary napkin that can exchange absorbents (absorbents), while Korean Utility Model Registration No. 20-0263520 uses pads to absorb absorbent pads inside the body of a sanitary napkin. The present invention discloses a sanitary napkin consisting of an absorbent pad made of cotton mat, which is obtained by stacking several layers of cotton that is processed into cotton. However, these disposable absorbent products such as cotton sanitary napkins have a problem in that their ability to absorb and store secretions such as blood, urine, and menstrual blood secreted by the human body, which is their original purpose, is significantly lower than that of disposable absorbent products composed of synthetic fibers. .

Accordingly, the present inventors have made diligent efforts to develop a disposable absorbent product composed of only human-friendly materials while having an absorbent storage function equivalent to a disposable absorbent product composed of synthetic fibers currently on the market. As a result, the present invention has been completed.

One object of the present invention is a disposable absorbent article consisting of a liquid permeable topsheet, a liquid impermeable backsheet, and an absorbent pad positioned between the topsheet and the backsheet, wherein the topsheet is composed of an organic fiber nonwoven fabric, The back sheet is composed of a biodegradable resin, the absorbent pad is to provide a disposable absorbent product, characterized in that consisting of a natural absorbent and a natural absorbent pulp.

The present invention provides a disposable absorbent article comprising a liquid permeable topsheet, a liquid impermeable backsheet, and an absorbent pad positioned between the topsheet and the backsheet, wherein the topsheet is composed of an organic fiber nonwoven fabric and the backsheet is biodegradable. Consists of a resin, the absorbent pad relates to a disposable absorbent product, characterized in that consisting of a natural absorbing pulp and a natural absorbent.

Disposable absorbent products of the present invention absorb and store secretions of the human body, but are not limited thereto, and examples thereof include diapers, sanitary napkins, tampons, panty liners, and the like. In addition, the disposable absorbent product of the present invention is preferably used for one-time use, but can be used more than once if the amount of human secretion is small compared to the maximum absorption amount, it is not limited to this.

The liquid permeable top sheet of the present invention is characterized by consisting of organic fiber nonwoven fabric. The organic fiber nonwoven fabric of the present invention refers to an organic fiber extracted from a plant produced without using toxic pesticides and chemical fertilizers, for example, an organic cotton, and made from the nonwoven fabric. The method for producing the fibers extracted from the organic plant into a nonwoven fabric is preferably produced using a spunlace process. The spunlace process is similar to the normal nonwoven (air-through) process, but in the initial horn-taking process, the yarn is completely opened to meter and feed the yarn into the carding machine, and the web feeding and carding process of forming the web in the carding machine. After passing through the molding process to adjust the web generated in the card machine to the thickness and width of the desired nonwoven fabric. Thereafter, water is jetted up and down in a water-jet process to combine the web, and then the conveyor is moved back to the conveyor for water punching. The water punched web undergoes a high vacuum exhauster to remove moisture from the web as much as possible, and is a process of drying the final product. The organic fiber nonwoven fabric produced by the above process has a thickness of 0.5 mm or less, preferably 0.1 to 0.5 mm, and its basis weight is 20 to 50 g / m ² , preferably 30 to 45 g / m ² , more preferably 35 to 45 g / m ² . The organic fiber nonwoven fabric prepared as described above is fused with 1 to 4 sheets, preferably 1 to 3 sheets, and most preferably 1 to 2 sheets to form one top sheet to form the top sheet of the disposable absorbent article. The number of organic fiber nonwoven fabrics forming one such top sheet may be selected differently within this range depending on the use of the disposable absorbent article used. However, when the organic fiber nonwoven fabric is 5 sheets or more, the thickness of the formed upper sheet may not be exerted to exhibit sufficient liquid permeability, and the thickness of the entire disposable absorbent product may be uncomfortable when worn. In addition, the top sheet composed of the organic fiber nonwoven fabric is preferably 100g / m ² or less in the total basis weight. If the basis weight is exceeded because the heterogeneity due to weight occurs.

The organic fiber nonwoven fabric of the present invention can be worn for a long time without generating skin troubles, which is a problem of the conventional synthetic fibers, even when directly contacted with the skin of the wearer by configuring the upper sheet of the disposable absorbent product.

Absorbent pad of the present invention is characterized by consisting of a natural absorbent and a natural absorbent pulp, not a chemically produced polymer absorbent.

The natural absorbent is, but is not limited to, starch derived from a plant such as corn or potatoes, and serves to absorb human secretions and retain the absorbed secretions. The natural absorbent has a particle size distribution of 10 to 200 mesh, preferably 20 to 150 mesh, more preferably 20 to 100 mesh. The natural absorbent is included in the absorbent pad in an amount of 50 to 100 g / m ² , preferably 50 to 95 g / m ² . When the content of the natural absorbent is less than 50g / m ^2, the absorption and storage effect of the secretion is low, so it is not suitable for disposable absorbent products.When the content of the natural absorbent exceeds 100g / m ^2, the thickness of the absorbent pad is so thick that the appearance is not good. There is this.

The natural absorbing pulp of the present invention is a particle size of an aggregate of cellulose fibers or an aggregate of these fibers prepared in a pulp manufacturing process in a natural state without the use of bleaching agent in wood or other fiber plants used in wood pulp or non-wood pulp. Refers to the powder ground. The wood pulp includes coniferous or hardwood wood such as pine, fir, larch, poplar, birch, aspen, oak, oak, ginkgo, and the like, and the non-wood pulp is straw, soybean, reed, reed, bamboo , Bagasse, and the like.

The absorbent pad of the present invention composed of the natural absorbent and natural absorbent pulp can be prepared by the following methods. After processing the natural absorbing pulp in the shape of an absorbent pad, and then spraying the natural absorbent to the processed natural absorbing pulp (first natural absorbing pulp) by spraying or spaced apart at regular intervals of 0.01 to 0.05mm. After applying, the other natural absorbing pulp (second natural absorbing pulp) is stacked on top of the applied natural absorbing pad and pressed. The absorbent pad thus manufactured has a shape as shown in FIG. 3. Or after pulverizing the natural absorbing pulp, the pulverized natural absorbing pulp and the natural absorbent are 1.5 to 6: 1 by weight, preferably 1.5 to 5: 1 by weight, more preferably 2 to 5: 1 by weight. After mixing the mixture into a pulp form, it is prepared by cutting into the shape of the absorbent pad. The absorbent pad thus manufactured has a shape as shown in FIG. 4. The manufactured absorbent pad has a thickness of 2 to 6 mm, preferably 3 to 5 mm, and when the thickness is less than 2 mm, there is a problem in that the absorption of secretion is not sufficiently achieved. When the thickness is more than 6 mm, the absorbent pad is too thick. There is a problem in appearance.

The absorbent pad of the present invention is made of a natural material, which is environmentally friendly, and has good absorption rate, absorption ratio, and discharge rate, so that the absorbent pad can be suitably used as an absorbent pad for disposable absorbent products.

The liquid impermeable back sheet of the present invention is characterized by being composed of a liquid impermeable biodegradable resin. The liquid impermeable biodegradable resin refers to a synthetic resin synthesized by chemical methods or microorganisms or natural polymers such as starch, cellulose, wood flour and the like. Preferably, the biodegradable resin of the present invention is a fiber incorporating polylactic acid (PLA) obtained from corn or potato, Tensle (regenerated cellulose), milk-containing rayon, and chitosan. In one specific embodiment, the present inventors used polylactic acid, which is condensed by a microorganism after fermenting renewable resources such as starch contained in a known method, for example, corn or potato. The polylactic acid produced or sold by the manufacturing method can be purchased and used.

The backsheet composed of the liquid impermeable biodegradable resin of the present invention has no fear of discharged to the outside when absorbed, and is also a biodegradable resin, so it can be used environmentally since it is biodegraded naturally upon disposal.

Disposable absorbent products of the present invention are currently commercially available, although the topsheet in contact with the skin, the absorbent pad for absorbing and storing the secretions, and the backsheet for preventing the secreted secretions from leaking to the outside are all composed of materials derived from nature. It has almost the same absorption and absorption storage rate as disposable absorbent products made of synthetic fibers, and because of its natural materials, it can be worn safely for a long time without fear of causing skin trouble or dryness when worn by human body. It is an environmentally friendly product.

The invention is described in more detail by the following examples. However, the present invention is not limited by the following examples, and may be applied to other disposable absorbent products.

Example  1: manufacture of sanitary napkin

1-1. Manufacturing of Top Sheet

1 kg of organic cotton fibers are made of organic fiber nonwoven fabric (fiber nonwoven fabric A) or 20 g / m ² organic fiber nonwoven fabric (fiber nonwoven fabric B) having a basis weight of 40 g / m ² by spunlace method. The cutting process was carried out to the shape of the sheet. Of these processed nonwoven fabrics, only fiber nonwoven fabric A was used as the top sheet, or two layers of fiber nonwoven fabric B were welded and used as the top sheet.

1-2. Preparation of Absorbent Pad

Absorbent pad is a commercially available natural absorbing pulp made of conifers and then pulverized, and then mixed with corn starch in a turbulence machine in a weight ratio of 2: 1, then compressed into a pulp form using a compactor and cut into absorbent pad shapes. Processed.

1-3. Manufacture of sanitary napkin

The sanitary napkin was manufactured by a general sanitary napkin manufacturing process using PLA purchased from Enpia Co., Ltd. together with the top sheet and absorbent pad prepared in 1-1. As a back sheet. A sanitary napkin made of a topsheet composed of fibrous nonwoven fabric A was called sanitary napkin-A, and a sanitary napkin made of bilayer topsheet composed of fibrous nonwoven fabric B was called sanitary napkin-B, and the following experiment was performed.

Example  2: sanitary napkin physical property test

Measuring the absorption rate, discharge amount and the absorption rate of the sanitary napkin of the present invention prepared in Example 1, the cotton sanitary napkin consisting of only commercially available cotton (Rohan) and the general sanitary napkin consisting of synthetic fibers and polymer absorbent (P & G) Compared with. The comparative experiment was repeated five times, and the absorption magnification experiment was tested according to the test method published by the Korea Food and Drug Administration. The results are shown in Table 1 below.

Sanitary napkin-A Sanitary napkin-B Cotton sanitary napkin General sanitary napkin Absorption rate (sec) 24.92 25.10 23.10 34.06 Discharge rate (g) 3.00 2.48 4.12 1.20 Absorption magnification (times) 11.20 11.60 9.00 13.50

As can be seen in the comparative experiments, the general sanitary napkin containing the polymer absorbent was the best at the absorption rate and the absorption ratio, and the sanitary napkin-B and sanitary napkin-A of the present invention were excellent, and the cotton sanitary napkin was the lowest. . In addition, the discharge rate of absorbed water was excellent in the order of general sanitary napkin, sanitary napkin-B, sanitary napkin-A and cotton sanitary napkin of the present invention. In particular, in the absorption ratio, the sanitary napkins-A and B of the present invention exhibited 10 times or more, and passed the sanitary napkin standard published by the Korea Food and Drug Administration. Therefore, the sanitary napkin of the present invention has a suitable absorption ratio and has a good absorption rate and discharge rate even when using a natural absorbent, so that it can be used as a disposable absorbent product.

Example  3: sanitary napkin leak test

The sanitary napkin prepared in Example 1 was compared with the cotton sanitary napkin and the general sanitary napkin of Example 2 to perform a leak test. As a result, the sanitary napkin-A and sanitary napkin-B and the general sanitary napkin of the present invention did not leak through the back sheet, but in the case of cotton sanitary napkin. Therefore, it was found that the sanitary napkin of the present invention can be suitably used as a sanitary napkin.

Example  4: sanitary napkin wear evaluation test

The sanitary napkin-A prepared in Example 1 was evaluated after wearing on 20 women in their 20s to 30s having skin problems such as itching and rash. As a result, skin troubles caused by menstrual pads did not occur in all 20 patients, and all 20 showed satisfaction when worn.

Disposable absorbent products of the present invention can be used in diapers, sanitary napkins, tampons and panty liners for absorbing secretions discharged from the human body, such as blood, urine and menstrual blood.

1 is a plan view showing the general form of the female sanitary napkin of the conventional disposable absorbent products.

FIG. 2 is a cross-sectional view of the cut portion along the line A-A of the female sanitary napkin of FIG.

3 is a cross-sectional view showing a structure of an absorbent pad of the present invention.

Figure 4 is a cross-sectional view showing one structure of the absorbent pad of the present invention.

* Explanation of symbols for the main parts of the drawings

A: transverse centerline

10: top sheet

11: first natural absorption pulp

12: natural absorber

13: second natural absorption pulp

14: crushed natural absorption pulp

20: back sheet

30: absorption pad

40: adhesive

Claims (7)

In a disposable absorbent article consisting of a liquid permeable topsheet, a liquid impermeable backsheet, and an absorbent pad positioned between the topsheet and the backsheet, the topsheet consists of one to four sheets of organic fibrous nonwoven fabric, the backsheet Consists of a biodegradable resin, the absorbent pad is a disposable absorbent product, characterized in that consisting of a natural absorbent and a natural absorbent pad. The disposable absorbent article as set forth in claim 1, wherein the organic fiber nonwoven fabric is a nonwoven fabric obtained by processing a fiber extracted from organic cotton by a spunlace process. The disposable absorbent article of claim 1 wherein the organic fiber nonwoven has a basis weight of 20 to 50 g / m ² . The disposable absorbent article according to claim 1, wherein the biodegradable resin is any one selected from the group consisting of PLA, regenerated cellulose, milk-containing rayon and chitosan. The disposable absorbent article of claim 1 wherein said natural absorbent is corn starch or potato starch. According to claim 1, wherein the natural absorbent is a disposable absorbent product, characterized in that contained in the absorbent pad in a content of 50 to 100g / m ² . The disposable absorbent article as set forth in claim 1, wherein the natural absorbing pulp is made from wood pulp or non-wood pulp selected from the group consisting of straw, soybeans, reeds, reeds, bamboo, and burgers.

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