KR101211874B1 - Disposable absorbing product including embo top sheet formed by using heat and pressure between yield point and break point - Google Patents

Abstract

The present invention relates to a disposable absorbent product, by applying the yielding and breaking characteristics of the polymer forming the upper nonwoven fabric, which is the surface in contact with the skin of the wearer when applied, by applying heat and pressure from the yield point to the breaking point, the convex having a partial opening at the end of the embossing. It is characterized in that the embossed sheet layer formed, convex embossed portion of the skin of the wearer to reduce the skin contact area, improve the diffusion properties of body fluids and increase breathability, as well as can occur when wearing disposable products It provides a disposable absorbent product that can improve skin protection effect by alleviating and improving existing skin troubles, and can sufficiently protect the wearer's skin from moisture and heat.

Description

Disposable absorbing product including embo top sheet formed by using heat and pressure between yield point and break point}

The present invention relates to a disposable absorbent product, and more particularly, by applying the yield and fracture characteristics of the polymer forming the upper nonwoven fabric, which is a surface in contact with the wearer's skin, by applying heat and pressure from the yield point to the fracture point, thereby partially embossing the end portion. It is characterized by forming a convex embossed sheet layer having an opening, thereby convex embossed portion in contact with the wearer's skin to reduce the skin contact area, improve the diffusion properties of body fluids and increase breathability, wear disposable products The present invention relates to a disposable absorbent product capable of improving skin protection by alleviating and improving skin troubles that may occur during application, and sufficiently protecting a wearer's skin from moisture and heat.

Disposable absorbent products absorb body fluids such as blood, urine and menstrual blood and are hygienic and convenient during use. In general, disposable absorbent products are products that absorb excretion (e.g., urine, blood, menstrual blood, etc.) excreted by various physiological actions of the wearer, that is, products that absorb urine, feces, menstrual discharge and vaginal discharge, More specifically, there are disposable diapers used by infants or incontinents, women's sanitary napkins, panty liners, and the like.

Disposable absorbent products, including diapers, have evolved into ultra-thin forms that increase the absorbent capacity of the absorbent core and make it thinner in order to quickly absorb secretions excreted by the wearer and provide comfort in use. This makes it possible to wear disposable absorbent articles for a relatively long time.

As a disposable absorbent product is worn for a relatively long time, the moisture and heat from excretion discharged by various physiological actions of the wearer make the skin vulnerable and less breathable, causing rash on the skin of newborns and infants, especially sensitive to irritation. There are still problems that have a negative impact. That is, the topsheet of the disposable absorbent product includes a surface that contacts the wearer's skin when worn. In general, the topsheet has a bad effect on the wearer's skin by contacting the wearer's skin with a wide surface after urination.

Therefore, a number of techniques are known for forming convex emboss by single non-woven fabric alone or by paper using a staple fiber made of thermoplastic material or a fibrous layer made of continuous filaments in order to reduce the contact surface with the skin and increase the liquid diffusion.

However, in general, nonwoven fabrics having a single layer of nonwoven fabric and embossed by applying heat and pressure have a characteristic of being restored to its original state over time, and when applied to diapers, sanitary napkins, liners, etc., these disposable absorbent articles There is a difficulty in embossing during use due to the tension applied in the production process, or pressing or collapsing by pressing and pressing in the process of packaging, distribution, and use after production.

In order to solve this problem, techniques for forming embossing by laminating two layers of nonwoven fabric have recently been developed. However, when the two layers of nonwoven fabric are laminated to form embossing, with the problem of the embossed nonwoven fabric formed of a single nonwoven fabric layer, as the thickness increases, the basis weight increases and the winding length that can be wound per roll becomes short, so that the disposable absorbent article There is a problem in that the productivity is lowered during the production of, and there is a problem in that the higher the application cost.

The present invention is to solve the problems with the conventional disposable absorbent products as described above, the object of the present invention after applying the yield and fracture properties of the polymer forming the nonwoven when forming an embossed nonwoven fabric with a single layer after the yield point By applying heat and pressure until just before breaking to form convex emboss with openings at the end of some embossings, the embossing formed on the lining of the product during the production and distribution of disposable absorbent products is capable of maintaining convex shape without restoring to the nonwoven fabric before embossing. To provide an absorbent product.

The present invention, in order to achieve the above object, in the disposable absorbent product comprising a liquid permeable top sheet in contact with the wearer's skin, the top sheet comprises an embossed layer convex in the direction in contact with the wearer's skin, It provides a disposable absorbent article, characterized in that the opening is formed.

In the present invention, in order to prevent the convex emboss formed on the top sheet from being restored and to maintain its shape, heat and pressure from the yield point to the break point are applied when forming the convex emboss, and an opening is inevitably formed in this process. do.

In general, the raw material of the nonwoven fabric used in the top sheet of the disposable absorbent article is used alone, mixed or natural fibers such as polypropylene, polyethylene, polyethylene terephthalate and cellulose acetate. These thermoplastic polymers have a characteristic that when a certain external stress is applied, deformation due to stress occurs as the external stress is applied until the yield point, but after the yield point, it is no longer restored to its original form. After the continuous stress is applied to have a characteristic that is broken, this is called the break point (Break Point).

In the present invention, the embossed layer having an opening is formed by applying a force from the yield point to the break point to the sheet layer made of respective fibers composed of staple fibers or long fibers so as not to be restored after embossing. The embossing thus formed is not restored to its form prior to heat and pressure because external stress is applied from the yield point to the break point.

In the present invention, the end of the embossed part has a certain level of opening by some broken fibers. As the emboss is formed by applying heat and pressure from the yield point to the break point, an opening is formed at the end of the emboss. That is, in the present invention, the opening is formed at the distal end of some emboss in the emboss layer.

In the present invention, the concept of the opening ratio indicates how many openings are formed in the embossed layer. In the present invention, the opening ratio of the emboss layer is defined as a percentage of the emboss number having an opening to the total emboss number within a predetermined area. This opening ratio is preferably 0.1 to 80%, more preferably 1 to 70%, most preferably 5 to 60%. If the opening ratio exceeds 80%, it is difficult to expect the advantages of applying the convex embossed nonwoven to the disposable absorbent article. In addition, it is practically impossible to adjust the opening ratio of the upper end of the emboss to less than 0.1% by applying heat and pressure until just before the break point due to the characteristics of the embossing technique.

In the present invention, the basis weight of the top sheet to which heat and pressure are applied is preferably 15 to 70 g / m 2, more preferably 18 to 50 g / m 2. If the basis weight of the top sheet is less than 15 g / m 2, when forming the convex emboss, the interval from the yield point to just before the break point is small, and it is difficult to finely control heat and pressure during embossing, so that the opening ratio may exceed 80%. Can be. When the basis weight of the top sheet exceeds 70 g / m 2, due to the high heat and pressure applied before reaching the break point after the yield point, the emboss is restored after the formation, or the melt or carbonization of the nonwoven fabric before embossing have.

In the present invention, the concept of the height retention of the emboss is used to represent how much the emboss is maintained without its restoration. In the present invention, the height retention of the emboss is defined as a percentage of the emboss height after the removal of the load relative to the initial emboss height when the constant load is removed after applying a certain time. The height retention of such embossing is preferably 40 to 100%, more preferably 60 to 100%, for example, when removed after applying a load of 3.5 kgf / 10 cm 2 for 2 hours.

In the present invention, the top sheet may be formed in the form of the staple fibers are bonded or continuous filaments are bonded.

Disposable absorbent articles of the invention may be infant diapers, adult diapers, feminine sanitary napkins or panty liners.

In addition, the present invention provides a method for producing a disposable absorbent article comprising the step of forming an embossed layer having an opening by applying heat and pressure to the break point after the yield point on the top sheet.

In the manufacturing method of the present invention it is possible to control the opening ratio of the embossed layer by adjusting the heat and pressure from the yield point to just before the break point.

The disposable absorbent article according to the present invention is maintained in the form of convex emboss while the wearer is using the product, thereby improving cushioning and softness when the product is worn. In addition, the skin contact surface is reduced to alleviate and improve skin troubles that may occur when the product is worn, thereby improving skin protection comfort, and sufficiently protecting the wearer's skin from moisture and heat inside the disposable absorbent product.

1 is a plan view showing an unfolded state of the diaper illustrated as one of the disposable absorbent products according to the present invention.
FIG. 2 is a partial cross-sectional view of the disposable diaper of FIG. 1 taken along line AA. FIG.
3 is a schematic diagram of a convex embossed single sheet having a constant opening ratio by applying heat and pressure from the yield point to the break point according to the present invention.
4 is an image of a convex embossed single sheet having a constant aperture ratio by applying heat and pressure from the yield point to the break point according to the present invention.

Hereinafter, a preferred embodiment of the present invention applied to a disposable diaper among disposable absorbent products will be described in more detail with reference to the attached disposable diaper (D). The following detailed description and the accompanying drawings are illustrated to provide a more general understanding of the invention and are not meant to limit the invention thereto. And a detailed description of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a plan view showing an embodiment of a disposable diaper with the inner surface of the diaper facing the viewer, Figure 2 is a partial cross-sectional view of the disposable diaper of Figure 1 taken along the line A-A.

As shown, the disposable diaper D is divided into a front waist portion 1, a crotch portion 2, a rear waist portion 3, and a liquid impermeable back sheet 4 which forms an outer surface when worn. , A liquid permeable top sheet 6 in direct contact with the wearer's skin when worn, an absorbent core 5 positioned between the back sheet 4 and the top sheet 6, and a stiffening band 8, 9 having elastic means formed thereon. ) And waist band 21, and fastening means (19, 20) and the like.

Among the components of the disposable diaper D, the backsheet 4 is liquid impermeable, which prevents body fluids absorbed by the absorbent core 5 from leaving the disposable diaper D and contaminating the wearer's clothing and surroundings. Perform the function. The backsheet 4 is positioned opposite the absorbent core 5 in the opposite direction of contact with the wearer's skin and adhered to the absorbent core 5 and the topsheet 6 by solid adhesive or heat.

The backsheet 4 is generally made of a thin plastic film, and added with an inorganic substance such as calcium carbonate to form (extrude or inject) fine pores in the film so that steam can escape from the absorbent core 5. . Suitable materials for the backsheet 4 are thermoplastic films having a weight of 10 to 30 g / m 2, and preferably include polyethylene film or polypropylene film.

The back sheet 4 adds a nonwoven fabric 23 to the outer surface of the plastic film 22 to impart a pure cotton feel (softness). The nonwoven fabric 23 may be attached to the plastic film 22 in the same width in the lateral direction. Preferably, the nonwoven fabric 23 is reduced in size to the same width as the transverse width of the absorbent core 5. 23) is made of the same size as the entire transverse width of the disposable diaper (D) and attached.

The absorbent core 5 is located between the back sheet 4 and the top sheet 6, and absorbs the body fluid passing through the top sheet 6 at a high speed, and prevents the absorbed body fluid from contacting the skin again. To absorb and retain body fluids. The absorbent core 5 is composed of fluff pulp, super absorbent polymer and tissue (10, Tissue) or nonwoven fabric, and has a wide variety of sizes and shapes (eg, rectangular, hourglass type). , T-shaped, asymmetrical, etc.).

The top sheet 6 is located at the top of the absorbent core 5 (in the direction of contact with the skin of the wearer), and is attached to the back sheet 4 by an adhesive means such as hot melt adhesive, heat or ultrasonic waves. The top sheet 6 is preferably made of a material that is soft to the touch and does not irritate the skin of the wearer. In addition, the topsheet 6 is a liquid permeable material that easily passes a liquid (for example, urine), and is usually made of a nonwoven fabric or a thermoplastic film having a hole formed with hydrophilicity through hydrophilic emulsion treatment.

Absorption diffusion layer 7 is an optional configuration, located between the absorbent core 5 and the top sheet 6, is a liquid permeable to easily pass the liquid, each material by an adhesive means such as hot melt adhesive, heat or ultrasonic wave Is bonded with.

Disposable diapers typically form pockets on the left and right sides of the absorbent core 5 to prevent leakage of body fluid from the absorbent core 5. The rotatable bands 8 and 9 are the rotatable band flap 11, the rotatable band flap adhesion portion 12, the rotatable band end portion 13, the rotatable band end adhesive portion 14, the rotatable band elastic body 15, and the rotatable band flap ( 16, 17).

The solid band flap 11 stands up by the solid band elastic body 15 at least in the crotch portion 2 to form an absorbent pocket outside the absorbent core 5, thereby releasing the body fluid which is separated from the absorbent core 5. Trapped to prevent leakage. The coagulation bands 8 and 9 are made of a hydrophobic nonwoven fabric or a waterproof nonwoven film, and the hydrophobic nonwoven material forms a coagulation band flap 11 in two layers to enhance the hydrophobic effect, and the coagulation band flap 11 ) May be bonded with a solid adhesive. Hydrophobic nonwovens generally have a weight of 10 to 30 g / m 2.

In addition, the corresponding bands 8 and 9 are provided on the corresponding band flap 11 between the corresponding band flap adhesion part 12 and the corresponding band end 13 so that the corresponding band end portions 13 closely adhere to the baby skin. The above elastic body 15 is formed. The elastic modulus of the solid band elastic body 15 is set in the range of 150 to 230%, preferably 180 to 200%. An elastic yarn is mainly used as the solid-state band elastic body 15, and polyurethane spandex or natural rubber is used for the elastic yarn.

The rotatable band end portion 13 is a portion where the rotatable band flap 11 is in contact with the baby skin, and the rotatable band flap adhesion portion 12 has the rotatable band flap 11 outside the absorbent core 5 of the disposable diaper D. It is the part adhere | attached to the side flaps 16 and 17 in the longitudinal direction of the disposable diaper D. As shown in FIG. The solid band side flaps 16 and 17 are the portions in which the materials forming the solid bands 8 and 9 extend to the transverse outer edges of the disposable diaper D, including the solid band flap adhesive portion 12, and the solid adhesive Or adhesively fixed to the backsheet 4 or the topsheet 6 by heat.

The coagulation band flap 11 coagulates with the coagulation band inner side flap 16 along the longitudinal bonding point of the coagulation band flap adhesion portion 12 of the disposable diaper D at least in the crotch portion 2 of the disposable diaper D. The band outer side flaps 17 are divided, and the width of the corresponding band side flaps 16 and 17 is preferably 20 to 50 mm, but is preferably set to 15 to 35 mm.

The rotatable band end adhesive portion 14 is a waist of the longitudinal outer both edges of the disposable diaper D such that the rotatable band flap 11 forms an absorbent pocket by the rotatable band flap adhesive portion 12 and the rotatable band elastic body 15. Refers to an adhesive portion for fixing the corresponding band flap 11 to the inside or the outside of the corresponding band flap adhesive portion 12. The coagulation band end adhesive portion 14 is formed to be partially fixed on the absorbent core 5, and it is preferable to form the non-bonded portion on the coagulation band side flaps 16 and 17 outside the absorbent core 5. The cuff end adhesive portion 14 length is formed to be typically 30 to 100 mm from the longitudinal ends of the front waist 1 and rear waist 3 of the disposable diaper D. FIG.

And the fastening means (19, 20) is used to hold and hold the disposable diaper (D) configured in this way, the fastening means (19, 20) is typically a re-adhesive tape or hook-loop system (Hook & Loop System) Mechanical fastening means are used. Each material is also adhesively fixed by hot melt adhesive, heat fusion or other bonding method. The fastening means (19, 20) is a re-adhesive fastening means (19) consisting mainly of a fixing part fixed to the corner of the corresponding band side flaps (16, 17) of the rear waist portion (3) of the disposable diaper (D) and an unfixed free end portion (19) And a front fastening means 20 formed transversely to the front waist 1 and providing a target region to which the refastening fastening means 19 can be attached.

The waist band 21 is formed by bonding an elastic body to the waist of the disposable diaper (D). The elastic body of the waistband 21 is mainly used polyurethane foam (polyurethane foam), polyurethane film (polyurethane film), polyurethane nonwoven elastic body and elastic yarn, the elastic yarn is used polyurethane spandex or natural rubber. The waistband 21 may be formed over the entire width of the disposable diaper D in the transverse direction between the longitudinal end portion of the disposable diaper D and the outer side of the absorbent core 5, or may be formed to be short.

3 and 4 show schematics and images, respectively, of a convex emboss single sheet having a constant aperture ratio by applying heat and pressure from the yield point to the break point in accordance with the present invention, wherein the top sheet 6 is divided into a plurality of convex embosses 24. An embossed layer is formed, and an opening 25 is formed at the distal end of some of the convex embosses 24.

In order to prevent the convex embossing 24 formed on the top sheet 6 from being restored and maintaining its shape, heat and pressure from the yield point to the breaking point must be applied when forming the convex embossing 24. 24) is not restored to the form prior to heat and pressure because external stresses from the yield point to the break point are applied.

At the end of the emboss 24, a level of opening 25 is formed by some broken fibers. As the emboss is formed by applying heat and pressure from the yield point to the break point, the opening 25 is formed at the end of the emboss 24. At this time, the heat and pressure for forming the embossing and the opening ratio should be set differently according to the material, basis weight, thickness, etc. of the nonwoven fabric.

The top sheet 6 is configured in the form of a convex emboss sheet having a constant opening ratio on the surface in contact with the skin of the wearer. Specifically, the opening 25 is applied to the distal end portion of the emboss 24 by applying heat and pressure from the yield point to the break point. It is composed of a convex emboss sheet having a, preferably of a single sheet.

The material of the top sheet 6 may be composed of a composite or natural material composed of a plurality of staple fibers or continuous filaments alone, or may be made of a mixed nonwoven fabric or film. In addition, the staple fibers may be combined or in the form of combined continuous filaments. Specifically, the raw material of the top sheet 6 is used with thermoplastic fibers alone, mixed or natural fibers such as polypropylene, polyethylene, polyethylene terephthalate, cellulose acetate and the like.

The yield point and the breaking point of each nonwoven fabric can be varied in various ways depending on the formation method, material, basis weight, and the like of the nonwoven fabric. The behavior is also different in short fiber nonwoven fabrics such as air through bonded carded web nonwoven fabrics and long fiber nonwoven fabrics such as spunbond-spunbond nonwoven fabrics. For example, a 20-gram per square meter (20 gsm) Bi-component Air Through bonded Carded Web nonwoven fabric consisting of Core-Sheath structure of polypropylene and polyethylene has a yield point of 1.5 to 1.8 kgf / in, Low of about 1.1 to 1.3 kgf / in. In addition, 18 g of Spunbond-Spunbond long fiber nonwoven composed of polypropylene has a yield point of about 1.6 to 2.0 kgf / in and a break point of similar strength. These yield points and break points can be measured through a universal testing machine (UTM).

The basis weight of the top sheet 6 is preferably 15 to 70 g / m 2, more preferably 18 to 50 g / m 2. If the basis weight of the top sheet 6 is less than 15 g / m 2, the opening ratio is short after the yield point when the convex emboss 24 is formed, and thus the opening ratio is difficult to finely control heat and pressure during embossing. This may exceed 80%. If the basis weight of the top sheet 6 exceeds 70 g / m 2, due to the high heat and pressure applied before reaching the break point after the yield point, the emboss is restored after the formation, or the melt or carbonization of the nonwoven fabric before the emboss is formed. There is a problem that appears.

The opening ratio of the top sheet 6 indicates how many openings are formed in the emboss layer. In the present invention, the opening ratio is defined as a percentage of the emboss number having an opening to the total emboss number within a predetermined area. This opening ratio is preferably 0.1 to 80%, more preferably 1 to 70%, most preferably 5 to 60%. If the aperture ratio exceeds 80%, it is difficult to reduce the skin contact surface by embossing, and the surface of the upper sheet is rough, which causes skin irritation. If the opening ratio is less than 0.1%, there is a problem that the emboss disappears when a constant pressure is applied after the embossing is formed. The opening ratio of the embossed layer can be adjusted by adjusting heat and pressure from the yield point to just before the break point.

The height of the convex emboss 24 may vary depending on the design. For example, the height of the embossing may be 1 to 2 mm, but is not limited thereto, and may be designed by varying the height depending on the intended use.

The convex emboss 24 is not restored even when a constant load is applied, and it is preferable to maintain the height as much as possible, that is, it is preferable that the height retention of the emboss is high. In the present invention, the height retention of the emboss is defined as a percentage of the emboss height after the removal of the load relative to the initial emboss height when the constant load is removed after applying a certain time. The height retention of such embossing is preferably 40 to 100%, more preferably 60 to 100%, for example, when removed after applying a load of 3.5 kgf / 10 cm 2 for 2 hours.

Although described above based on disposable diapers such as infant diapers and adult diapers, the disposable absorbent products of the present invention may be applied to women's sanitary napkins or panty liners.

Hereinafter, the present invention will be described in more detail by way of examples. However, the examples are only for illustrating the present invention, and the present invention is not limited only to these examples.

Example 1

In manufacturing the disposable diaper shown in Figs. 1 to 4, a long-fiber nonwoven material made of Spunbond is used as the topsheet 6, and stretched to a yield point (1.6 kgf / in, 50%), followed by continuous heat and pressure. Was added to elongate the break point (1.65 kgf, 52%), at which the upper part with a convex embossed layer having an opening ratio of 1% was applied by applying a pressure of 80 bar at 150 ° C lower than the melting point of the spunbonded nonwoven fabric, 160 to 165 ° C. Sheets were prepared.

[Example 2]

As in Example 1, but by applying a pressure of 85 bar at 152 ℃, a top sheet having a convex embossed layer having an opening ratio of 30% was prepared.

[Example 3]

As in Example 1, but by applying a pressure of 95 bar at 155 ℃ to prepare a top sheet having a convex embossed layer of 60% opening.

Example 4

As in Example 1, but by applying a pressure of 100 bar at 155 ℃ to prepare a top sheet having a convex embossed layer having an opening ratio of 70%.

Comparative Example 1

As in Example 1, by applying heat and pressure below the yield point, a top sheet having a convex embossed layer having an opening ratio of 0% was prepared.

Comparative Example 2

As in Example 1, but by applying a pressure of 110 bar at 160 ℃, a top sheet having a convex embossed layer having an opening ratio of 90% was prepared.

[Test Example]

The disposable absorbent products prepared in Examples and Comparative Examples were tested and evaluated according to the following test methods, and the results are shown in Tables 1 and 2.

Emboss  Height retention

When the upper sheets of Examples 1 to 4 and Comparative Examples 1 to 2 were removed after applying a constant load (3.5 kgf / 10 cm 2) for a predetermined time (2 hours), the emboss height retention ratio (load) Emboss height / initial emboss height after removal) is shown in Table 1.

Emboss height retention (%) Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Emboss height
Retention rate (%) 70% 99.5% 95% 85% 35% 50%

As can be seen in Table 1, according to the present invention, by applying heat and pressure from the yield point to the breaking point, the embossed shape retaining effect is excellent because the top sheet having an opening ratio of 1 to 70% is maintained at 70% or more. In the comparative example, the emboss height was maintained at 50% or less, resulting in a low embossing effect.

Rewet amount

After administering 150 mL of artificial urine to the topsheets of Examples 1 to 4 and Comparative Examples 1 to 2, the result was left for 5 minutes with a load of 3.5 kgf / 10 cm 2, and then the amount of cuts was measured and shown in Table 2.

Rewet amount (%) Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Rewet amount (%) 5% 0.2% 0.01% 3% 25% 37%

As can be seen in Table 2, according to the present invention, by applying heat and pressure from the yield point to the break point, in the case of the upper sheet having an opening ratio of 1 to 70%, the reversed release of the leakage is excellent, In the comparative example, the back discharge of the leaked liquid was high and the wettability characteristics were lowered.

D: disposable diaper
A: transverse centerline
1: anterior waist
2: crotch
3: rear waist
4: back sheet
5: absorbent core
6: top sheet
7: absorption diffusion layer
8: inner curing band
9: outside coagulation band
10: tissue
11: curd band flap
12: curd band flap adhesion part
13: distal band end
14: coagulation band end adhesive part
15: cured band elastic body
16: Clap band inner side flap
17: Cuff band outer side flap
19: Re-adhesive fastening means
20: forward fastening means
21: waistband
22: plastic film of back sheet
23: Nonwoven fabric of back sheet
24: convex emboss
25: opening

Claims (16)

A disposable absorbent article comprising a liquid permeable topsheet in contact with a wearer's skin,
The topsheet includes an embossed layer that is convex in the direction of contact with the skin of the wearer,
An opening is formed in the emboss layer,
The opening is formed by heat and pressure from the yield point to the break point,
The opening is formed at the distal end of some embossing of the embossing layer,
The opening ratio of the emboss layer is 1 to 70%, as a percentage of the emboss number having an opening to the total emboss number,
The height retention of the emboss is 70% as the percentage of the emboss height after the removal of the load to the initial emboss height when the load of 3.5 kgf / 10 cm 2 is applied after 2 hours of application. Disposable absorbent product, characterized in that from 100% to 100%.
delete delete delete The method of claim 1,
Disposable absorbent product, characterized in that the basis weight of the top sheet is 15 to 70 g / ㎡.
delete The method of claim 1,
Disposable absorbent product, characterized in that the top sheet is made by combining staple fibers or continuous filament.
The method of claim 1,
Disposable absorbent products are disposable diapers, baby diapers, adult diapers, feminine sanitary napkins or panty liners.
Applying heat and pressure to the liquid permeable topsheet in contact with the wearer's skin from the yield point to the break point, thereby forming an embossed layer having convex and opening in the direction of contact with the wearer's skin;
The opening is formed at the distal end of some emboss in the emboss layer,
The opening ratio of the emboss layer is a percentage of the emboss number having an opening to the total emboss number, and is 1 to 70%,
From the yield point to the break point, heat and pressure are adjusted to adjust the opening ratio of the embossed layer,
The height retention of the emboss is 70% as the percentage of the emboss height after the removal of the load to the initial emboss height when the load of 3.5 kgf / 10 cm 2 is applied after 2 hours of application. Method for producing a disposable absorbent product, characterized in that from 100% to 100%.
delete delete delete 10. The method of claim 9,
The basis weight of the top sheet is a method for producing a disposable absorbent product, characterized in that 15 to 70 g / ㎡.
delete 10. The method of claim 9,
The top sheet is a method of producing a disposable absorbent product, characterized in that the staple fibers or a continuous filament is combined.
10. The method of claim 9,
Disposable absorbent product is a manufacturing method of a disposable absorbent product, characterized in that the infant diaper, adult diaper, feminine sanitary napkin or panty liner.

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