KR20240025374A - a comfortable sanitary pad - Google Patents

Abstract

The present invention relates to a sanitary napkin, which is a disposable absorbent product such as a sanitary napkin. The upper end of the sanitary napkin is curved in the direction of the wearer's groin to increase wearability by increasing adhesion to the body and underwear in consideration of the curve of the female body. It is a sanitary napkin designed to be comfortable to wear.

Description

Sanitary pad with a comfortable fit {a comfortable sanitary pad}

This relates to sanitary napkins, which are disposable absorbent products such as sanitary napkins. Considering the curve of a woman's human body, the upper end of the sanitary napkin is curved in the direction of the wearer's groin to increase wearability by increasing adhesion to the body and underwear. It is a sanitary napkin with a comfortable fit that improves the wearing comfort.

When wearing a sanitary napkin, the end of the absorbent pad facing toward the wearer's abdomen is referred to as the upper end (8), and the end of the absorbent pad facing toward the wearer's buttocks is referred to as the lower end (9). A woman's human body has a curvature in the pubic region, and because of this, when wearing a sanitary napkin with a straight upper part, it cannot adhere closely, causing separation between the sanitary napkin and the wearer's underwear, and the excess of the lifted upper part of the sanitary napkin and the overlap between them. Skin irritation may occur due to wrinkles formed.

Therefore, considering the curvature of the groin, a curved sanitary napkin with a similar curvature can increase adhesion to underwear and wearability to the groin. Additionally, this curvature formation may be formed in the (a') direction as shown in Figures 3 and 4 or in the (a) direction as shown in Figure 6. Existing products formed in the (a) direction do not completely cover the female pubic area, so there are problems with side gland instability and skin irritation caused by the upper edge when worn.

The present invention was made in consideration of the circumstances of the prior art described above, The purpose is to improve wearing comfort by considering the curves of a woman's human body so that the upper part of the sanitary napkin is curved in the direction of the wearer's groin to increase wearability by increasing adhesion to the body and underwear.

Accordingly, the present invention observes the change in the shape of the sanitary napkin according to the anatomical contour of the human body when the wearer attaches the sanitary napkin to underwear, and bends the upper part of the sanitary napkin in the groin direction to effectively attach it to the wearer's body, thereby increasing mobility when worn. The purpose is to provide sanitary pads that increase the number of sanitary pads. Hereinafter, the present invention will be described in detail as follows.

In a sanitary napkin composed of a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent core between them, the flaps are connected to both outer sides of the absorbent portion. In Figure 2, the top sheet (1) must quickly capture menstrual blood excreted from the body without being dehumidified, and must be soft and flexible when worn. Preferably, it is a perforated thermoplastic plastic film such as polyethylene, polypropylene, or non-woven fabric. The absorbent core 2 is disposed between the top sheet and the back sheet. The absorbent core 2 provides a means for absorbing body secretions excreted from the wearer. In general, it is contractile and must have an absorbent and water-retaining capacity that quickly captures secretions permeating from the top sheet (1) and does not discharge them again through the top sheet. The absorbent material constituting the absorbent portion may be made of any suitable material. Representative materials that can be used include rayon, polyester, crushed wood pulp referred to as airfelt, creped cellulose wadding, crosslinked cellulose fibers, absorbent foams, absorbent sponges, synthetic staple fibers, polymeric fibers, and hydrogel formed fibers. Combinations of polymer gelling agents, supercharging, etc. are used. The back sheet (3) is made of a polymer film such as polyethylene or polypropylene to prevent exposure to body excretions, and is sufficiently flexible so that no sound is made when worn. The structural adhesive and clothing adhesive (5) are used for sanitary napkins and incontinence clothing. Alternatively, it can be used as a commonly used adhesive for forming diapers, and it is better to use a wide band adhesive to provide maximum adhesion strength for attachment to clothing. The flap 4 is positioned to extend in the transverse direction of the absorbent portion from the wearer's crotch area and may be formed by stretching the material of the top sheet, the back sheet, or part or all of the absorbent portion. The flap (4) fixes the position of the sanitary napkin during the wearing period and covers the edge of the underwear to prevent sanitary material from leaking in the horizontal direction (7) due to the user's leg movements. Additionally, the flap (4) may have a fixing means or adhesive (5) that can be attached to the wearer's underwear or another flap. Additionally, when wearing a sanitary napkin, the end of the absorbent pad facing toward the wearer's abdomen is referred to as the upper end (8), and the end of the absorbent pad facing toward the wearer's buttocks is referred to as the lower end (9). A woman's human body has a curvature in the pubic region, and because of this, when wearing a sanitary napkin with a straight upper part, it cannot adhere closely, causing separation between the sanitary napkin and the wearer's underwear, and the excess of the lifted upper part of the sanitary napkin and the overlap between them. Skin irritation may occur due to wrinkles formed. Therefore, considering the curvature of the groin, a curved sanitary napkin with a similar curvature can increase adhesion to underwear and wearability to the groin. Additionally, this curvature formation may be formed in the (a') direction as shown in Figures 3 and 4 or in the (a) direction as shown in Figure 6. Existing products formed in the (a) direction do not completely cover the female pubic area, so there are problems with side gland instability and skin irritation caused by the upper edge when worn. Accordingly, the purpose of the present invention is to increase wearability on the body and adhesion to underwear by forming a curve in the (a') direction at the upper end of the sanitary napkin. Additionally, it can relieve anxiety about the side glands by completely covering a woman's pubic area up to the edge.

The present invention relates to a sanitary napkin, which is a disposable absorbent product such as a sanitary napkin. The upper end of the sanitary napkin is curved in the direction of the wearer's groin to increase wearability by increasing adhesion to the body and underwear in consideration of the curve of the female body. It is designed to create a comfortable fit.

(a), (b), and (c) are plan views showing embodiments of the present invention. (a), (b), (c) in Figure 5 and (a), (b), (c) in Figure 6. is a floor plan showing comparative examples
*Explanation of symbols for main parts of the drawing*
1. Liquid-permeable top sheet
2. Absorbent Core
3. Liquid impermeable back sheet
4. Flap
5. Glue
6. Longitudinal axis centered on the central absorption pad
7. Transverse axis centered on the central absorption pad
8. Upper part of sanitary napkin
9. Rear end of sanitary napkin
a: Direction of the wearer's abdomen when worn in the direction in which the curve is formed at the front end of the sanitary napkin a': Direction of the wearer's groin when worn in the direction in which the curve is formed at the front end of the sanitary napkin
b: At the rear end of the sanitary napkin, the ^curves (a) and (b) in Figure 1 are the top view of a typical sanitary napkin product, and Figure 2 is a cross-sectional view of a typical sanitary napkin product. (a), (b) and (c) in Figure 3 are a cross-sectional view of a typical sanitary napkin product. ) and (a), (b), (c) of Figures 4 are plan views showing embodiments of the present invention, (a), (b), (c) of Figures 5 and (a), (b) of Figures 6 ), (c) is a floor plan showing comparative examples
*Explanation of symbols for main parts of the drawing*
1. Liquid-permeable top sheet
2. Absorbent Core
3. Liquid impermeable back sheet
4. Flap
5. Glue
6. Longitudinal axis centered on the central absorption pad
7. Transverse axis centered on the central absorption pad
8. Upper part of sanitary napkin
9. Rear end of sanitary napkin
a: Direction of the wearer's abdomen when worn in the direction in which the curve is formed at the front end of the sanitary napkin a': Direction of the wearer's groin when worn in the direction in which the curve is formed at the front end of the sanitary napkin
B Direction of the wearer's groin when worn in the direction in which the curve is formed at the rear end of the sanitary napkin. b': Direction of the wearer's groin when worn in the direction in which the curve is formed in the rear end of the sanitary napkin. ^* Direction of the wearer's groin when worn in the direction in which the sanitary napkin is formed. b': At the rear end of the sanitary napkin, in the direction in which the curve is formed, in the direction of the wearer's buttocks when worn

The present invention relates to a sanitary napkin for women that can improve wearing comfort by more effectively fixing it to the curve of the wearer's body by bending the upper end of the sanitary napkin in the groin direction. In the present invention, a sanitary napkin is composed of a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent core inserted between the top and back sheets, and is used to absorb or block body fluids excreted from a woman's body to prevent them from leaking out. It is a disposable product whose main function is blocking. These sanitary pads must quickly capture excreted body fluids, have excellent spillage prevention, and have a soft and flexible top sheet and absorbent core. In addition to these absorbent characteristics, they must also have an adhesive system and an adhesive system that can safely secure the central absorbent pad against the wearer's movements during the wearing period. It must be able to prevent leakage in the transverse direction. Additionally, as women's social activities increase, there is a demand for the development of sanitary pads with improved wearability in addition to better absorption properties and leakage prevention functions. In particular, women's clothes tend to be simplified and adhere closely to the human body, so adhesion between the human body and underwear has become an important characteristic when wearing sanitary pads. Accordingly, the present invention observes the change in the shape of the sanitary napkin according to the anatomical contour of the human body when the wearer attaches the sanitary napkin to underwear, and bends the upper part of the sanitary napkin in the groin direction to effectively attach it to the wearer's body, thereby increasing the mobility when worn. The purpose is to provide sanitary pads that increase the number of sanitary pads. Hereinafter, the present invention will be described in detail as follows.

In a sanitary napkin composed of a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent core between them, the flaps are connected to both outer sides of the absorbent portion. In Figure 2, the top sheet (1) must quickly capture menstrual blood excreted from the body without being dehumidified, and must be soft and flexible when worn. It is preferably made of a perforated thermoplastic plastic film such as polyethylene, polypropylene, or non-woven fabric. The absorbent core 2 is disposed between the top sheet and the back sheet. The absorbent core 2 provides a means for absorbing body secretions excreted from the wearer. In general, it is contractile and must have an absorbent and water-retaining capacity that quickly captures secretions permeating from the top sheet (1) and does not discharge them again through the top sheet. The absorbent material constituting the absorbent portion may be made of any suitable material. Representative materials that can be used include rayon, polyester, crushed wood pulp referred to as airfelt, creped cellulose wadding, crosslinked cellulose fibers, absorbent foams, absorbent sponges, synthetic staple fibers, polymeric fibers, and hydrogel formed fibers. Combinations of polymer gelling agents, supercharging, etc. are used.

The back sheet (3) is made of a polymer film such as polyethylene or polypropylene to prevent exposure to body excretions, and must be sufficiently flexible to make no sound when worn.

The structural adhesive and clothing adhesive (5) can be those commonly used in forming sanitary napkins, incontinence clothing, or diapers, and are preferably in the form of a wide band adhesive to provide maximum adhesion strength for clothing attachment.

The flap 4 is positioned to extend in the transverse direction of the absorbent portion from the wearer's crotch area and may be formed by stretching the material of the top sheet, the back sheet, or part or all of the absorbent portion. The flap (4) fixes the position of the sanitary napkin during the wearing period and covers the edge of the underwear to prevent sanitary material from leaking in the horizontal direction (7) due to the user's leg movements. Additionally, the flap (4) may have a fixing means or adhesive (5) that can be attached to the wearer's underwear or another flap.

Additionally, when wearing a sanitary napkin, the end of the absorbent pad facing toward the wearer's abdomen is referred to as the upper end (8), and the end of the absorbent pad facing toward the wearer's buttocks is referred to as the lower end (9). A woman's human body has a curvature in the pubic region, and because of this, when wearing a sanitary napkin with a straight upper part, it cannot adhere closely, causing separation between the sanitary napkin and the wearer's underwear, and the excess of the lifted upper part of the sanitary napkin and the overlap between them. Skin irritation may occur due to wrinkles formed.

Therefore, considering the curvature of the groin, a curved sanitary napkin with a similar curvature can increase adhesion to underwear and wearability to the groin. Additionally, this curvature formation may be formed in the (a') direction as shown in Figures 3 and 4 or in the (a) direction as shown in Figure 6. Existing products formed in the (a) direction do not completely cover the female pubic area, so there are problems with side gland instability and skin irritation caused by the upper edge when worn.

Accordingly, the purpose of the present invention is to increase wearability on the body and adhesion to underwear by forming a curve in the (a') direction at the upper end of the sanitary napkin. Additionally, it can relieve anxiety about the side glands by completely covering a woman's pubic area up to the edge.

Figures (3) (a), (b), and (c) show an example of a sanitary napkin in which the upper end of the sanitary napkin is curved in the (a') direction, and the upper end of the sanitary napkin is curved in the (a') direction and the lower end. This is an example of a case where a curve is formed in the (b') direction. In particular, as shown in Figure (3) (c), the upper end of the sanitary napkin is curved in the (a') direction. If the lower part is curved in the (b') direction with similar curvature, productivity can be improved by using only one cutting machine in the sanitary napkin production process, and carting loss is minimized depending on the design of the sanitary napkin. There is an advantage.

Hereinafter, the present invention will be described in more detail through examples and comparative examples. Examples 1 to 6 and Comparative Examples 1 to 6 [Example 1] Sanitary napkin whose upper end is curved in the (a') direction and whose rear end is straight [Example 2] The upper end of the sanitary napkin is curved in the (a') direction A sanitary napkin with a curve and a rear end curved in the (b) direction [Example 3] A sanitary napkin with an upper end curved in the (a') direction and a rear end curved in the (b') direction [Example 4] The upper end of the sanitary napkin is curved in the (a') direction, and the sanitary napkin has a radius of curvature of 170 mm when the width of the sanitary napkin is 70 to 80 mm [Example 5] The upper end of the sanitary napkin is curved in the (a') direction, A sanitary napkin with a radius of curvature of 130 mm when the width of the sanitary napkin is 70 to 80 mm [Example 6] A sanitary napkin with the upper end of the sanitary napkin curved in the (a') direction and a radius of curvature of 80 mm when the width of the sanitary napkin is 70 to 80 mm [Comparative Example 1 ] The front end of the sanitary napkin is straight, and the rear end is also straight [Comparative Example 2] The front end of the sanitary napkin is straight, and the rear end is curved in the (b) direction [Comparative Example 3] The front end of the sanitary napkin is straight, and the rear end is straight. A sanitary napkin curved in the (b') direction [Comparative Example 4] A sanitary napkin with a curved front end in the (a) direction and a straight rear end. [Comparative Example 5] A sanitary napkin with a straight end at the front end curved in the (a) direction. A sanitary napkin with a front end curved in the (b') direction [Comparative Example 6] A sanitary napkin with a front end curved in the (a) direction and a rear end curved in the (b') direction. Degree of leakage and overlap. In order to determine the degree of skin irritation caused by wrinkles or wrinkles and satisfaction with wearing, the phenomenon of menstrual fluid leaking around the groin area, overlapping due to extra sanitary napkins, skin irritation caused by wrinkles, and the level of satisfaction of consumers when worn were used in the above examples. and Product 10 manufactured in the comparative example was distributed to 70 women (women in their 20s to 30s who are menstruable), and the number of leaks, degree of skin irritation, and wearing were observed and recorded for about 5 months, and the following judgment criteria were observed. The decision was made based on this. * Determination of the degree of leakage from the front, sides, or back or contamination of the body or clothing

Claims (1)

A sanitary napkin composed of a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent core between them, and wherein the upper end (8) of the sanitary napkin is curved in the direction (a') of the wearer's groin to increase wearing comfort.