KR20110024809A

KR20110024809A - Absorbent article for sanitary

Info

Publication number: KR20110024809A
Application number: KR1020090082960A
Authority: KR
Inventors: 김민희; 한기영
Original assignee: 주식회사대한펄프
Priority date: 2009-09-03
Filing date: 2009-09-03
Publication date: 2011-03-09

Abstract

PURPOSE: A sanitary absorbent article is provided, which improves liquid absorption and transfer function in the surface sheet. CONSTITUTION: A sanitary absorbent article comprises: a first surface sheet(210) which is made of liquid permeable non-woven fabric and in which an opening is formed; and a second surface sheet(210') which is made of material with faster absorption speed than that of the first surface sheet and is located in the opening. The opening is formed in the center area of the first surface sheet. The second surface sheet locates under the first surface sheet.

Description

Hygiene absorbent article {ABSORBENT ARTICLE FOR SANITARY}

The present invention relates to hygiene absorbent articles.

Conventional hygiene absorbent article 100, as shown in Figures 1 and 2, the surface sheet 110 for contacting the skin of the user to pass the body excrement, such as acupuncture points, urine, etc., body excrement through the surface sheet And an absorbent core (130) for absorbing and retaining water, and a back sheet (140) positioned below the absorbent core to prevent leakage of body waste held by the absorbent core, and optionally the surface sheet (110). ) And an absorbent transfer layer 120 for transferring the body excrement supplied through the surface sheet to the absorbent core 130 between the absorbent core 130 and the absorbent core 130.

Here, the surface sheet 110 in contact with the user's skin is generally absorbed and passed quickly through the body excrement, and the body excrement held by the absorbent core is flowed back while allowing the absorbed body excreta to move quickly to the absorbent core. Should be prevented. To this end, in the case of a conventional hygiene absorbent article, a liquid permeable film was used as the surface sheet 110.

However, although the liquid permeable film can function to absorb and excrete body excretion as described above, due to the stiff vinyl material, the touch to the user's skin is not soft and the user's skin is kept on while wearing. Stimulation caused trouble to the user's skin, and furthermore, if sweat is discharged from the user when worn, it sticks to the user's skin and reduces the user's fit such as discomfort. As a result, users have shown a rejection in the use of hygiene absorbent articles in which a liquid permeable film is applied as the surface sheet.

In recent years, in order to improve the feel and fit of the user's skin, a liquid permeable nonwoven fabric having a soft touch and absorbing moisture is used as the surface sheet of the hygiene absorbent article instead of the liquid permeable film. In the case of such hygiene absorbent articles, due to the soft touch and the surface sheet that does not stick to the skin, less skin irritation occurs than the liquid permeable film, and the wearability is good, and consumer demand is increasing.

However, liquid permeable nonwovens have poor liquid absorption performance as compared to liquid permeable films. Thus, in a hygiene absorbent article in which a liquid permeable nonwoven fabric is applied as a surface sheet, the nonwoven fabric has a slow rate of absorbing the excrement in the body, and thus, the excrement in the body leaks to the outside before being absorbed into the liquid permeable nonwoven fabric, and thus the user's clothing and Smudges of bedding often occurred. In addition, the liquid permeable nonwoven fabric slowly moved the absorbed body excrement to the absorbent core, so that the nonwoven fabric retained the body excrement for a long time, which caused a damp feeling to the user, causing discomfort.

The inventors have formed openings in certain portions of the surface sheet made of liquid permeable nonwoven fabric, and by placing the surface sheets made of other material having a relatively faster liquid absorption rate than the liquid permeable nonwoven fabric, the user's skin The present invention seeks to improve the liquid absorption and delivery function of a surface sheet made of a liquid permeable nonwoven fabric having excellent touch and comfort.

The present invention provides a sheet made of a liquid permeable nonwoven fabric, comprising: a first surface sheet having an opening formed therein; And a sheet made of a material having a liquid absorption rate relatively higher than that of the first surface sheet, the second absorbent article having a second surface sheet positioned in the opening.

In addition, the present invention provides a sheet made of a liquid permeable nonwoven fabric, comprising: a first surface sheet having an opening formed therein; And a sheet made of a material having a liquid absorption rate relatively higher than that of the first surface sheet, the second contact sheet having a second surface sheet positioned in the opening.

The sanitary absorbent article according to the present invention is provided by placing a second surface sheet made of a material having a relatively higher liquid absorption rate than the first surface sheet in an opening formed in the first surface sheet made of a liquid permeable nonwoven fabric. The excreta can be absorbed at high speed and delivered to the absorbent core, as well as improving the wearer's fit without irritating the skin in contact.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail.

In the present invention, the hygiene absorbent article includes a sanitary napkin or a women's pad, a diaper, an incontinence garment, a trading pants, a band, and the like, and aims to absorb and contain body excrement including blood, urine, and powder. .

Sanitary absorbent article 200 according to the present invention, as shown in Figures 3 to 6, the first surface sheet 210, the opening 211 is formed; And a second surface sheet 210 'positioned in the opening 211 of the first surface sheet. Here, the first surface sheet 210 is a sheet made of a liquid permeable nonwoven fabric, and the second surface sheet 210 'is made of a material having a relatively faster liquid permeation rate than the first surface sheet. .

In the present invention, a sheet made of a liquid permeable nonwoven fabric is used as the first surface sheet 210. The first surface sheet 210 made of the liquid permeable nonwoven fabric has less trouble on the user's skin because the first surface sheet 210 is less irritating to the user's skin even if the sheet directly touches the user's skin due to the soft surface feel. In addition, the first surface sheet 210 of the liquid-permeable nonwoven fabric may absorb moisture on its own, so that even if the sweat is discharged from the user, the first surface sheet immediately absorbs the sweat and thus does not stick to the skin, thereby causing the user to Does not cause discomfort to

The kind of such liquid permeable nonwovens varies depending on the fiber material and the manufacturing method used. Specifically, the liquid permeable nonwoven fabric may contain fiber materials such as cotton, rayon, polyester, polyethylene, and polypropylene alone, and may also contain a mixture of the two or more fiber materials. In addition, the liquid permeable nonwoven fabric may be spunlace such as stitchbond, thermalbonding, chemicalbonding, ultrasonic bonding, needle punching, hydro-entangled spunlace, or hydro-apertured spunlace. (non-woven fabrics produced by spunlace, melt-blown, spunbond, air-laid, tough-air bonding, etc., or a combination of two or more of the above nonwovens Nonwoven fabrics.

In addition, the basis weight and / or density of the liquid permeable nonwoven fabric is different depending on the fiber material used in the liquid permeable nonwoven fabric and the manufacturing method thereof, and thus the size and / or porosity of the pores formed in the liquid permeable nonwoven fabric are different. Different surface roughness and liquid absorption rate. For example, in the case of liquid permeable nonwovens containing rayon, polyethylene, polypropylene or cotton fibers by the spunlace method, the basis weight may be in the range of about 15 to 70 gsm (gram per square meter).

The first surface sheet 210 made of such a liquid permeable nonwoven fabric has an opening 211 in which a second surface sheet for improving the liquid absorption function of the first surface sheet is located.

At this time, the shape and position of the opening 211 is varied depending on the purpose of use of the hygiene absorbent article according to the present invention, for example, whether at bedtime or daytime use, the amount of excretion of the user's body, whether long-term use, etc. It is not limited.

For example, the shape of the opening 211 may be a dumbbell-shaped, rectangular, elliptical, triangular streamline that gradually expands from the center to the end of the surface sheet as shown in FIG. When used in a dumbbell shape as shown in Figure 7 (a) is suitable, when used at bed shape as shown in Figure 7 (d) when the shape of the opening end in the center of the first surface sheet A triangular streamline that gradually expands while reaching is appropriate, but is not limited thereto.

On the other hand, the position of the opening 211 varies from the center to the end of the sheet in the longitudinal direction of the first surface sheet as shown in Figure 8, preferably the first surface as shown in Figure 8 (a) It is appropriate to be located at a portion corresponding to the discharge portion of the user's body waste (ex. Menstrual blood, urine, etc.), such as the center of the sheet.

In the opening 211 of the first surface sheet, a second surface sheet 210 'made of a material having a relatively higher liquid absorption rate than the first surface sheet is positioned, wherein the first surface sheet as shown in FIG. It is preferably located below the surface sheet 210.

The size (area) of the second surface sheet may be equal to or larger than the size (area) of the opening 211 of the first surface sheet, or may be the same as the size (area) of the first surface sheet. However, when the user uses a hygiene absorbent article for a long time, a large amount of body excretion is stored in the absorbent core so that the stored body excretion is refluxed or the body excretion is absorbed through the second surface sheet. When the body excrement is moved back and is not stored in the absorbent core when it is absorbed by the movement of the absorbed part, etc., the periphery of the second surface sheet 210 'overlaps with the periphery of the opening 211. The larger the size is, the larger the size of the second surface sheet is than the size of the opening 211, since the reverse body discharge can be prevented not only by the second surface sheet but also by the first surface sheet. . On the other hand, in terms of cost, it is appropriate to be equal to or slightly larger than the opening size of the first surface sheet. Therefore, it is appropriate to adjust the size of the second surface sheet in consideration of the use purpose or cost of the absorbent article, and preferably, the size (area) of the second surface sheet is equal to the opening size (area) of the first surface sheet. It is appropriate that it is about 5% to 50% of the size (area) (opening area) of the same or first surface sheet.

In addition, while adjusting the size (area) of the second surface sheet as described above, it is preferable to adjust in consideration of the size (area) of the opening 211. If the size (area) of the opening 211 of the first surface sheet is too small, the area where the second surface sheet located in the opening absorbs the excrement of the body is too narrow and it is difficult to efficiently absorb the secretion in the body, In addition, since only a small amount of the excreted body waste is absorbed and delivered to the absorbent core, other large body waste may leak out of the hygiene absorbent article. On the other hand, if the size (area) of the opening is too large, the second surface sheet located in the opening can quickly absorb a large amount of excreta in the body within a short time and deliver it to the absorbent core, but the area of the first surface sheet becomes narrow when worn The texture and fit of the user's skin may be reduced. Thus, in the present invention, the width and length of the opening 211 of the first surface sheet 210 are adjusted so that the area of the opening is in the range of about 5% to 50% of the total area (including the opening area) of the first surface sheet. It is appropriate to adjust as possible. For example, the width of the opening 211 may range from about 20 to 60 mm and its length may range from about 60 to 200 mm, wherein the area of the opening 211 is adjusted within the range.

On the other hand, the second surface sheet may be fixed (attached) to the opening portion of the first surface sheet by an adhesive means. Examples of the adhesion means include a heat fusion roller, an adhesive and the like. In this case, when the second surface sheet is fixed to the first surface sheet using a heat fusion roller, the surface temperature of the heat fusion roller may be set to a melting point or deformation temperature of the first surface sheet material and / or the second surface sheet material. It is appropriate to consider and adjust.

The material of the second surface sheet usable in the present invention is not particularly limited as long as the liquid absorption rate is relatively faster than that of the first surface sheet, and examples thereof include liquid permeable films. Specifically, the liquid permeable film is a film made of polyethylene and the like.

In such a liquid permeable film, a plurality of perforations such as holes, slits, etc., through which body excrement can pass from one surface to another surface of the film is formed. Here, the size of the perforations formed in the liquid permeable film may be adjusted according to the viscosity or density of the body excretion absorbed through the surface sheet and carried to the absorbent core, the amount of excretion of the body in the user, the use time and the like. However, if the size of the perforation is too small, the mucous body excrement is difficult to pass through the perforation and is not absorbed by the second surface sheet, which may cause the body excretion to leak out of the hygiene absorbent article. On the other hand, if the size of the perforation is too large, body excrement delivered from the second surface sheet to the absorbent core may be countercurrent. In view of this, it is appropriate to adjust the size of the perforation.

In addition, the shape of the perforation is not particularly limited, but in order to prevent the body feces retained (stored) in the absorbent core from flowing back to the surface sheet, such as an inverted truncated cone having an upper diameter of the perforation in the film larger than the lower diameter of the perforation. It is appropriate to have a shape. Here, the upper diameter is the puncture diameter on the surface adjacent to the body part, and the lower diameter is the puncture diameter of the side of the absorbent core.

Meanwhile, as shown in FIG. 6, the peripheral portion of the second surface sheet 210 ′ overlaps with the peripheral portion of the first surface sheet opening 211, and the embossed channel 212 is formed in the overlapping portion. As the embossed channel 212 is formed in the sanitary absorbent article 200, the peripheral portion of the second surface sheet 210 ′ may be firmly fixed to the peripheral portion of the first surface sheet opening 211. In addition, the embossed channel 212 can prevent the discharge of the body waste discharged out of the periphery of the second surface sheet 210 ', whereby the discharged body waste is concentrated absorbed in the portion of the second surface sheet. Can be.

To this end, the width of the embossed channel 212 is about 1 mm to 20 mm, preferably about 1 mm to 10 mm in width. At this time, it is appropriate that the depth of the embossed channel 212 is at least pressed into the absorbent core 230 portion, for example, the depth of the embossed channel is about 1 mm to 10 mm.

On the other hand, hygiene absorbent article 200 according to the present invention is made of the first surface sheet 210 and the second surface sheet 210 'described above, as shown in Figure 4 to 6 in contact with the user's skin In addition to the surface sheet, the absorbent core 230, which is located below the surface sheet to absorb and retain (store) the body waste passed through the surface sheet; And a back sheet 240 positioned below the absorbent core to prevent leakage of body waste held by the absorbent core, and optionally between the surface sheets 210 and 210 'and the absorbent core 230. It may be further provided with an absorbent delivery layer 220 that is located in the faster delivery of the body excrement supplied through the surface sheet to the absorbent core.

The present invention also provides a sheet made of a liquid permeable nonwoven fabric, comprising: a first surface sheet having an opening formed in a specific portion thereof; And a sheet made of a material having a liquid absorption rate relatively higher than that of the first surface sheet, the second contact sheet having a second surface sheet positioned in the opening.

Although the present invention has been described with reference to the drawings, it is merely exemplary, and it is common in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the appended claims. Anyone with knowledge can easily know. In addition, all details may be replaced by other technically equivalent elements.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. However, the present invention is not limited thereto.

< Example 1>

Using a spunlace nonwoven fabric having a basis weight of about 35 gsm, a sheet having a width of about 85 mm and a length of about 240 mm was produced, and then the center portion of the sheet had a width of about 50 mm and a length of about 95 mm. The phosphorus opening 211 was formed to prepare the first surface sheet 210. A second surface sheet 210 'having a width of about 60 mm and a length of about 105 mm was prepared using a polyethylene perforated film having a basis weight of about 24 gsm. Thereafter, the prepared second surface sheet 210 'was attached to the opening 211 of the prepared first surface sheet 210 using an adhesive to prepare a surface sheet.

The surface sheets 210 and 210 'prepared above, an absorbent transfer layer 220 and an absorbent core 230 each having a width of about 80 mm and a length of about 230 mm, and a width of about 85 mm, A sanitary napkin consisting of a back sheet 240 having a length of about 240 mm was prepared.

Comparative Example 1

As Comparative Example 1, a known sanitary napkin, Magic's Cotton ^™ from Daehan Pulp Co., Ltd. was used.

For reference, the sanitary napkin (Magic Cotton, Daehan Pulp Co., Ltd.) has a width using a spunlace nonwoven fabric having a basis weight of about 35 gsm instead of the surface sheet consisting of the first surface sheet and the second surface sheet of Example 1. It was prepared in the same manner as in Example 1 except that a surface sheet of about 85 mm and a length of about 240 mm was used.

Experimental Example 1

In order to confirm the degree of liquid penetration of the hygiene absorbent article according to the present invention, the following experiments were performed using the sanitary napkin prepared in Example 1, wherein the sanitary napkin of Comparative Example 1 was used as a control.

1. Liquid absorption rate measurement

Each sanitary napkin prepared in Example 1 and Comparative Example 1 was placed on a test bench of a absorption rate meter (LENZING TECHNIK LISTER Ser, No. L 5598) with its surface sheet facing up, and then placed on a base on the central portion of the sanitary napkin. Plate was placed. Then, after blocking the lower portion of the reagent inlet of the meter, 5 ml of the solution (0.9 wt% NaCl-H ₂ O) was injected into the surface sheet of the sanitary napkin using a pipette, and then the absorption rate meter was operated to The numerical values shown are shown in Table 1 below. Here, it was considered that the lower the value of the timer, the better the absorption function. The test was repeated a total of five times.

Example 1 (seconds) Comparative Example 1 (sec) One 1.66 2.42 2 1.08 2.54 3 1.31 2.64 4 1.81 3.50 5 1.39 2.92 medium 1.45 2.80

As a result of the experiment, the sanitary napkin prepared in Example 1 absorbed the liquid about 1.4 to 2.1 times faster than the sanitary napkin prepared in Comparative Example 1 (see Table 1). From this, it can be seen that the hygiene absorbent article according to the present invention has an excellent absorbing function compared to the conventional hygiene absorbent article.

2. artificial Menstrual Buried Measure

After injecting 25 ml of artificial menstrual blood of the following component into the central portion of each sanitary napkin surface sheet prepared in Example 1 and Comparative Example 1 for 2 minutes, the artificial menstrual blood was allowed to stand for 5 minutes to be sufficiently absorbed into the sanitary napkin. Thereafter, the weight of the prepared absorbent paper (material type or product name / manufacturer's description request) was measured, and then the absorbent paper was placed on the top of each sanitary napkin. Thereafter, an acrylic plate was placed on the absorbent paper, and a weight of 1 kg was placed on the absorbent paper, and left for about 2 minutes under pressure on a sanitary napkin. The differences are shown in Table 2 below. Here, it was considered that the smaller the difference in the weight of the absorbent paper before and after the experiment, the better the absorbing function of the sanitary napkin and the superior retaining function of the menstrual blood. The experiment was repeated a total of five times.

Composition of artificial menstrual blood-NaCl (10 g), Na ₂ CO ₃ (4 g), CMC (carboxymethylcellulose) (4.6 g), Glycerin (20 mL), Distilled water (up to about 1000 mL), Cogored (small amount)

Example 1 (g) Comparative Example 1 (g) One 0.04 2.70 2 0.03 3.80 3 0.09 3.00 4 0.02 3.20 5 0.04 2.40 medium 0.04 3.02

As can be seen in Table 2, in the sanitary napkin prepared in Example 1, only about 0.04 g of the total amount of artificial menstrual blood injected into the sanitary napkin was buried in the absorbent paper. On the other hand, in the sanitary napkin prepared in Comparative Example 1, about 3.02 g of the total amount of artificial menstrual blood injected into the sanitary napkin was buried in the absorbent paper, which is about 75.5 times larger than the sanitary napkin of Example 1 Artificial menstrual blood was buried in the absorbent paper.

From this, it can be seen that the hygienic absorbent article according to the present invention can retain not only the absorbing function but also the artificial menstrual blood once absorbed into the absorbent article therein compared with the conventional hygiene absorbent article.

1 is a perspective view showing a conventional hygiene absorbent article.

Figure 2 is an exploded perspective view showing a conventional hygiene absorbent article.

3 is a perspective view showing a hygiene absorbent article according to an example of the present invention.

Figure 4 is an exploded perspective view showing a hygiene absorbent article according to an example of the present invention.

5 is a cross-sectional view showing a hygiene absorbent article according to an example of the present invention.

6 is a cross-sectional view of a hygiene absorbent article according to another example of the present invention, in which the enlarged portion shows that a channel formed along the edge of the second surface sheet is pressed into the absorbent core portion.

7 is a view showing various shapes of the opening formed in the first surface sheet according to the present invention.

8 is a view showing various positions of the opening formed in the first surface sheet according to the present invention.

100: conventional hygiene absorbent article, 10: surface sheet,

20: absorbent transport layer, 130: absorbent core,

140: back sheet, 200: hygiene absorbent articles of the present invention,

210: first surface sheet, 210 ': second surface sheet,

211 openings, 212 embossing channels,

220: absorbent transport layer, 230: absorbent core,

240: back sheet

Claims

A sheet made of a liquid permeable nonwoven fabric, the first surface sheet having an opening formed therein; And

A second surface sheet located in the opening as a sheet made of a material having a relatively faster absorption rate than the first surface sheet

Hygiene absorbent article having a.

The hygiene absorbent article as set forth in claim 1, wherein said opening is formed in the central portion of said first surface sheet.

The hygiene absorbent article as set forth in claim 1, wherein the opening has a width of 20 to 60 mm and a length of 60 to 200 mm.

The hygiene absorbent article as set forth in claim 1, wherein said second surface sheet is positioned below said first surface sheet.

The periphery of the second surface sheet according to claim 1, wherein the periphery of the second surface sheet overlaps the periphery of the first surface sheet opening, and the periphery of the second surface sheet is formed around the opening of the first surface sheet by forming an embossing channel in the overlapping portion. Hygiene absorbent article characterized in that it is fixed to the site.

The hygiene absorbent article according to any one of claims 1 to 5, which is a liquid permeable film.

The absorbent apparatus of claim 1, further comprising: an absorbent core positioned below the first surface sheet and the second surface sheet to absorb and retain feces; And a back sheet positioned on the back of the absorbent core.

8. The absorbent transfer layer of claim 7 further comprising an absorbent transfer layer positioned between the first surface sheet and the second surface sheet and the absorbent core to deliver the body excrement supplied through the first surface sheet and the second surface sheet to the absorbent core. Hygiene absorbent article characterized in that it is provided.

A second surface sheet located in the opening as a sheet made of a material having a relatively higher liquid absorption rate than the first surface sheet

Body contact sheet having a.