TWI578973B - Absorbent items - Google Patents

Description

Absorbent article

The present invention relates to an absorbent article, and more particularly to an absorbent pad (pad) or disposable diaper.

Absorbent articles such as disposable diapers (hereinafter also referred to as "diapers") or absorbent pads are required to quickly absorb excreted body fluids without leaking. Further, in order to effectively use the absorbent body, it is necessary to rapidly diffuse the body fluid from the crotch portion toward the dorsoventral portion.

In addition, since the absorbent article covers the underarm portion, it is affected by the movement of the foot and the movement of the waist. If there is a gap between the wearer's body and the absorbent article, the body fluid may leak from the gap. In order to prevent leakage, the absorbent article is required to have a variety of movements that can track the body. Sex. In order to promote such a conformability, for example, it is known that an embossed pattern can be formed on the entire absorbent body from the viewpoint of improving the fluid diffusibility/absorbability of the absorbent body such as the disposable diaper after use and preventing the shape from collapsing.

For example, Patent Document 1 discloses a configuration in which an embossing process is performed on the skin contact surface side of the absorbent body, and the embossing process is an oblique lattice extending obliquely to the front crotch portion of the diaper from the front crotch portion. The shape of the compression groove.

[Previous Technical Literature] [Patent Literature]

Patent Document 1: Japanese Patent Laid-Open No. 2015-016218

In the technique of Patent Document 1, if a large amount of body fluid is excreted to the underarm portion of the absorbent body, the body fluid is absorbed in the underarm portion, and the body fluid passes through the embossing portion of the underarm portion, and the body fluid is intended to face the front portion and the back portion. The embossing of the 胴 part is spread. On the other hand, since the embossing is formed as a continuous pattern, the body fluid flows to the front and rear end portions of the absorbent body through the embossing of the anterior and posterior iliac portions of the absorbent body, thereby fearing that the body fluid leaks from the end portion. After that.

Further, since the oblique lattice shape is formed as a continuous pattern, it is difficult to bend at a crease perpendicular to the direction in which the absorbent body extends, and there is a problem that the fit of the wearer is lowered.

The present invention has been made in view of such a problem, and an object thereof is to provide an absorbent article which can improve the fit of a wearer and can suppress leakage from the front end portion of the absorbent body.

In order to achieve the object, the absorbent article of the present invention comprises a liquid permeable surface sheet, a non-liquid permeable back sheet, and an absorbent body disposed between the surface sheet and the back sheet; wherein the absorption system is The surface of the surface sheet side forms a plurality of concave portions, and the plurality of concave portions are arranged to form a plurality of first patterns extending in the first direction and a plurality of second patterns extending in the second direction crossing the first direction A non-formation region in which a plurality of concave portions are not formed is provided between the central region of the absorber and the end regions of the central region.

As described above, according to the present invention, it is possible to provide an absorbent article which can improve the fit of the wearer and can suppress leakage from the front end portion of the absorbent body.

10‧‧‧Abandoned diapers

10C‧‧‧胯下区域区

10F‧‧‧Previous area

10L‧‧‧ openings around the legs

10R‧‧‧胴胴 area

10S‧‧‧Pre-Patch

10T‧‧‧Adhesive tape

10W‧‧‧ Waist opening

11‧‧‧ Cover Sheet

11A‧‧‧Gap section

12‧‧‧ Back sheet (back sheet)

13‧‧‧Acceptor

13a‧‧‧Gap section

14‧‧‧Top sheet (surface sheet)

15‧‧ ‧ core wrap

16‧‧‧Glue line (rubber line around the leg)

17‧‧‧Glue line (rubber line around the waist)

18‧‧‧ side film

19‧‧‧Glue line (three-dimensional pleated stretch material)

21‧‧‧ recess

22, 220, 230‧‧‧Compressed columns

22a, 220a, 230a‧‧‧ first compressed column (first pattern)

22b, 220b, 230b‧‧‧ second compressed column (second pattern)

23‧‧ ‧Quasi-recess

25, 25a, 25b‧‧‧ main absorption area (uncompressed area)

51, 81, 82, 91‧‧‧ non-formed areas

240‧‧‧Additional compression column

D1~D3‧‧‧The width of the non-formed area

H‧‧‧ Height of uncompressed area

K1‧‧‧ front end area

K2‧‧‧Central Area

K3‧‧‧ back end area

Front and back spacing between adjacent recesses in L1, R1‧‧‧ compression columns

Length of the recess in the L2‧‧‧ compression column

The width of the recess in the L3‧‧‧ compression column

L4‧‧‧ thickness

L5‧‧ depth

M1‧‧‧Previous part

M2‧‧‧胯下下

M3‧‧‧ later part

N1‧‧‧Compressed portion forming area (embossed pattern forming area)

N2‧‧‧Compressed non-formed area (embossed pattern non-formed area)

P‧‧‧ imaginary line

S1, S3‧‧‧ The first compression column formation interval

S2, S4‧‧‧ the second compression column formation interval

Α1, β1‧‧‧ tilt angle

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing the appearance of a first embodiment of a disposable diaper in which an absorbent article of the present invention is applied to a pasting type.

Fig. 2 is a partially cutaway plan view showing the diaper shown in Fig. 1 and viewed from the skin contact surface side.

Figure 3 is a cross-sectional view showing the diaper of Figure 2 cut along line III-III.

Fig. 4A is an exploded perspective view showing the diaper shown in Fig. 1 unfolded and exploded.

Fig. 4B is a developed perspective view of the diaper shown in Fig. 1.

Fig. 5 is a partial plan view showing the absorbent body portion of the diaper shown in Fig. 1 according to the first embodiment of the present invention as seen from the top sheet side.

Fig. 6A is a partially enlarged schematic view showing an oblique embossed pattern of the lower portion of the crotch portion of Fig. 5.

Figure 6B is a cross-sectional view showing a section taken along line VIB-VIB of the embossed pattern of Figure 6A.

Figure 7 is a cross-sectional view showing a section taken along line VII-VII of the absorbent body portion of Figure 5.

Fig. 8 is a schematic plan view showing an example of an embossed pattern according to a second embodiment of the present invention.

Fig. 9 is a schematic plan view showing an example of an embossed pattern according to a third embodiment of the present invention.

Embodiments of the absorbent article of the present invention will be described in detail with reference to Figs. 1 to 9 . However, the invention is not limited to such embodiments, but also includes other absorbent articles that are attributable to the concepts of the invention. Further, the forms of the absorbent articles of the first to third embodiments and the modifications described below may be combined with each other.

[First Embodiment]

Fig. 1 is a perspective view showing the appearance of the first embodiment of the disposable diaper after the application of the present invention, as viewed from the front side. Fig. 2 is a partially cutaway plan view showing the diaper shown in Fig. 1 unfolded and viewed from the skin contact surface side. Figure 3 is a cross-sectional view taken along line III-III of Figure 2; Fig. 4A is a perspective view showing an exploded state in which the disposable diaper of the adhesive type shown in Figs. 1 and 2 is unfolded and exploded. Fig. 4B is an exploded perspective view showing the diaper which is completed by combining the constituent articles in the state of being disassembled.

The diaper 10 has a anterior ankle region 10F, a posterior condyle region 10R, and a crotch region 10C connecting the anterior condyle region 10F and the posterior condyle region 10R. Further, a waist opening portion 10W is formed which surrounds the portion of the wearer's waist when the front crotch region 10F and the crotch region 10R are worn. Similarly, a left and right pair of leg peripheral opening portions 10L are formed, and the lower end portions of the front crotch region 10F and the crotch region 10R and the crotch region 10C surround the thigh portions of the wearer's feet. Further, the adhesive tape 10T attached to both side edges of the crotch region 10R is attached to the patch 10S before being attached to the front crotch region 10F to constitute a sticky type diaper.

When worn, the front ankle area 10F is located on the ventral side of the user. The area 10R is located on the back side of the user. Further, the crotch region 10C covers the armpit of the wearer, and the left and right pair of leg portions around the leg portion 10L are shaped to allow the wearer's foot to pass. Therefore, the opening portion 10L around the leg is located at any position from the inside of the legs of the wearer to the circumference of the thigh.

The imaginary line P is extended from the ventral side toward the back side in the center portion in the width direction of the diaper 10 and is extended by the crotch portion. Specifically, for example, when the waist side of the diaper is set to the upper side and the lower side is set to the lower side, the imaginary line P extends along the surface of the diaper in the vertical direction, and passes through the underarm portion on the back side. It is also extended in the up and down direction. In other words, this up and down direction means that the imaginary line P extends along the central axis of the body along the direction from the center of the wearer toward the central axis of the body under the arm.

As shown in Fig. 2, Fig. 3, Fig. 4A and Fig. 4B, the diaper 10 of the present embodiment is covered with the sheet 11 and the non-liquid-repellent back from the outside when viewed from the skin side of the wearer. a sheet (back sheet) 12, an absorbent body 13 coated with a hydrophilic sheet, that is, a core coating (cotton paper) 15, and a top sheet (surface sheet) 14 which is in contact with the skin of the wearer in order Overlap and join together. Further, the back sheet 12, the absorbent body 13 covered with the core cover 15, and the top sheet 14 may be formed to form an absorbent article which is attached to the undergarment or the like to absorb the liquid.

In order to obtain a good hand touch feeling, the cover sheet 11 is formed of a rectangular thin non-woven fabric, and is joined to a rectangular back sheet 12 having a narrower width than the cover sheet 11.

The back sheet 12 is joined to the cover sheet 11 such that the longitudinal direction thereof is substantially parallel to the imaginary line P, and the center of the width direction or the vicinity thereof is positioned to allow the imaginary line P to pass therethrough.

The absorbent body 13 of the present embodiment has a slender shape and is held in order to maintain The shape is, for example, covered by a core sheet (cotton paper) 15 which is a hydrophilic sheet whose ends are adhesively bonded to each other. The absorber 13 covered with the core cover 15 is disposed between the back sheet 12 and the top sheet 14. The top sheet 14 of the present embodiment is bonded to the back sheet 12 via the absorber 13 covered with the core cover 15. Further, in the present embodiment, the absorbent body 13 coated with the core coating 15 is used, but the absorbent body of the present invention may not be coated with a core.

In the left and right end portions of the cover sheet 11 in the width direction, a plurality of glue lines 16 for forming the pleats around the legs are joined in an extended state. Further, at the end portion of the cover sheet 11 to which the back sheet 12 is joined, the end portion of the side of the enamel region 10R is joined in an extended state in the width direction of the cover sheet 11 to form a plurality of glue lines 17 for forming creases around the waist.

A pair of side sheets 18 forming a three-dimensional pleat-like liquid-repellent side are provided on the left and right side edges of the top sheet 14 in the width direction. The pair of side panels 18 are members for standing on both side edges of the absorbent body 13 when the diaper 10 is worn to prevent side leakage of urine excreted by the wearer. Each of the pair of side panels 18 is provided with a rubber thread 19 as a three-dimensional pleated stretch material in an extended state in a state in which the inner end edge portion thereof is folded toward the absorbent sheet 13 side, and when the rubber thread 19 is contracted Will stand in the direction of the wearer's skin contact. The three-dimensional pleats can be of a known composition used in conventional disposable diapers. For example, it can be formed by sandwiching and fixing a three-dimensional pleated stretch material in an extended state between layers of a water-repellent sheet. Further, an adhesive tape 10T is joined to the outer side edge portion of each of the pair of side sheets 18 at a position where the cover sheet 11 is joined to the rear side region 10R.

After the constituent articles of the diaper 10 shown in FIG. 4A are overlapped, the central portions of the left and right side edges of the longitudinal direction of the cover sheet 11 are respectively formed. One of the semi-arc shapes is a pair of notch portions 11A, and the pair of notch portions 11A are the leg portion opening portions 10L of Fig. 1 . After the pair of notch portions 11A are formed, the diaper 10 shown in Fig. 4B is completed.

As shown in Fig. 2, the side panels 18 of the finished diaper 10 are brought together in the longitudinal direction by the expansion and contraction of the glue line 19. Further, as shown in FIG. 3, the inner end edge portion is a standing three-dimensional pleat.

Further, in the diaper 10 of the present embodiment, the absorber 13 is long along the imaginary line P, and the longitudinal direction is parallel to the imaginary line P. Further, the direction orthogonal to the imaginary line P is defined as the width direction. Further, the ratio of the longitudinal direction to the width direction of the diaper is not limited to this embodiment. This ratio can be changed as appropriate depending on the size of the user.

Next, the structure of the absorber portion of the present embodiment will be described.

Fig. 5 is a partial plan view showing a portion where the absorbent body 13 and the top sheet 14 are located as viewed from the side of the top sheet 14.

The absorbent body 13 of the present embodiment located below the top sheet 14 is mainly composed of pulp and superabsorbent polymer (hereinafter also referred to as "SAP"). The absorbent body 13 is set to have an elongated shape so as to be straddled in the front, lower, and lower jaws. Further, it is divided into a front portion M1, a lower portion M2, and a rear portion M3. In the crotch portion M2, a pair of notched portions 13a formed in an arc shape are formed in accordance with the size of the left and right pair of leg peripheral opening portions 10L around the thigh portions of the two legs. The absorber 13 of the present embodiment is an hourglass type in which the notch portion 13a is provided and the width of the crotch portion M2 is narrower than the front and rear ends. However, the shape of the absorber 13 of the present invention is not limited thereto. When the front sill portion M1 is set to the front and rear (up and down) directions, and the direction orthogonal to the direction is set to the left and right direction, for example, the corners of the front and rear (upper and lower) ends are rounded. Elliptical, round, and front extending forward and backward (up and down) Various shapes such as rectangles of the same length (left and right). Further, depending on the size of the absorber 13, the notch portion 13a may not be formed.

Here, in the description of the specification and the scope of the patent application, the "central region" of the absorbent body 13 of the present invention refers to the center of the skin contact surface of the absorbent body 13 and the vicinity thereof, and refers to the initial urination and the like. The area where the possibility of liquid contact is high and the area in the vicinity. Furthermore, the "central area" may vary depending on the physique or gender of the wearer of the absorbent article. Further, the "central region" may be identical to the crotch portion M2 as in the present embodiment, for example, and may not coincide with the crotch portion M2 as in the third embodiment to be described later.

In the present embodiment, as shown in FIG. 5, the front end region K1 and the rear end region K3 are disposed so as to sandwich the central region K2 with the central region K2 and the predetermined interval (D1). In the present embodiment, the central region K2 is aligned with the crotch portion M2. The front end region K1 is formed to extend from the front end portion of the absorber 13 to the crotch side, and the rear end region K3 is formed to extend from the rear end portion of the absorber 13 to the crotch side.

In the description of the present specification and the scope of the patent application, the "front end region K1 and the rear end region K3" are referred to as "both end regions K1, K3" across the central region K2. In the present embodiment, as shown in Fig. 5, the absorber 13 is provided with a width D1 in which the plurality of recesses 21 are not formed between the central region K2 of the absorber 13 and the end regions K1 and K3 interposed between the central regions K2. The area 51 is not formed. The detailed configuration of the non-formation region 51 will be described later.

Next, an embossing process form formed from the top sheet 14 toward the absorber 13 in the present embodiment will be described. The diaper 10 applied to the present embodiment quickly absorbs a large amount of body fluids in the case of discharging a large amount of body fluids at the time of urination. By.

As shown in Fig. 5 and Fig. 6A, the diaper 10 has a compressed portion forming region (embossed pattern forming region) N1 which is compressed from the surface of the top sheet 14 toward the absorbent body 13 by regular embossing. The compressed portion forming region N1 is formed by compressing a plurality of concave portions 21, and by the arrangement of the concave portions 21, a plurality of compressed columns 22 having a pattern of oblique lattice patterns in a far vision are formed. Further, as shown in FIG. 5, an embossed pattern is not formed on both ends of the absorber 13. Therefore, the absorber 13 is provided with a compressed portion non-formation region (embossed pattern non-formation region) N2 on both sides of the compressed portion forming region (embossed pattern forming region) N1. This is to prevent leakage of body fluid through the embossing pattern and from the outside of the leg portion 10L around the leg.

Fig. 6A is a view showing a portion of the compression train 22 formed in the crotch portion M2 of the absorbent body 13 of the present embodiment (the compression train 22 of the absorbent body 13 in the groove forming region N1 surrounded by the dotted circle VIA in Fig. 5) Magnified view. As shown in FIG. 6A, the compression train 22 is formed by intermittently arranging a plurality of concave portions 21 at regular intervals. Further, the compression train 22 is divided into a first compression train (first pattern) 22a and a second compression train (second pattern) 22b according to the inclination direction thereof.

The first compression train 22a is inclined with respect to the imaginary line P at an inclination angle α1 in the first direction, that is, in the right direction in FIG. On the other hand, the second compression train 22b is inclined with respect to the imaginary line P at an inclination angle β1 in the second direction, that is, in the left direction in FIG. That is, the plurality of concave portions 21 are arranged to form a plurality of first compressed rows 22a extending in the first direction and a plurality of second compressed rows 22b extending in the second direction crossing the first direction. In the present embodiment, the angle (α1 + β1) between the first compression train 22a and the second compression train 22b is 90 degrees at a right angle, and the angles α1 and β1 are the same angle, but the present invention is not limited thereto.

In the present embodiment, the compressed rows 22 are arranged in a diagonal lattice shape in this manner, thereby preventing the absorber 13 from being twisted due to the movement of the foot before and after. That is, by providing the first compression train 22a and the second compression train 22b, the absorber 13 is deformed along the respective compression trains 22 with respect to the force applied to the oblique direction due to the movement of the foot before and after the movement, thereby suppressing the absorber 13 wry. Further, by compressing the row 22, the rigidity of the absorbent body 13 in the oblique direction is increased, and the tensile force in the oblique direction due to the movement of the foot is suppressed, so that the absorption body 13 can be prevented from being cut.

Figure 6B is a cross-sectional view showing a section taken along line VIB-VIB of the embossed pattern of Figure 6A. As shown in FIG. 6B, the first compression row 22a is alternately formed with a concave portion 21 which is the most compressed portion having the highest compression ratio, and a quasi-concave portion 23 which is a quasi-compression portion having a lower compression ratio than the concave portion 21. Similarly, the concave portion 21 and the quasi-recess portion 23 are also alternately arranged in the second compression train 22b. Here, the broken line in FIG. 6B shows the height H of the uncompressed region 25.

The recessed portion 21 is in a state in which the top sheet 14, the core cover 15, and the absorber 13 are integrally fixed by a high compression ratio. On the other hand, the quasi-recessed portion 23 is in a state in which the top sheet 14, the core cover 15, and the absorber 13 are temporarily fixed at a compression ratio which is weaker than the concave portion 21.

The capillary phenomenon of the compression train 22 is stronger in the concave portion 21 and weaker in the quasi-recessed portion 23, so that the diffusion force of the liquid is also rapidly diffused in the concave portion 21, and the diffusion of the quasi-recessed portion 23 is more diffusible than that of the concave portion 21. slow. Further, the diffusion speed of the compression train 22 is narrowed at a narrow interval between the concave portion 21 and the concave portion 21, the diffusion speed of the liquid is fast, and the diffusion of the liquid at the open portion is slow.

As described above, the compression train 22 of the present embodiment is formed with the concave portion 21 and the quasi-recessed portion 23 which are compressed from the height H of the non-compression region 25 by two steps, and therefore can be avoided. It is possible to prevent the top layer sheet or the core from being wrapped in the boundary portion between the compression portion and the non-compression region 25 to be elongated and possibly destroyed. Further, in the compression train 22 of the present embodiment, two types of compression portions of the most compressed portion and the quasi-compression portion are arranged. However, the present invention is not limited thereto, and three or more types of compression portions may be arranged to form a compression train.

Further, as shown in FIG. 7, a plurality of recesses 21 are formed by interposing an adhesive between the top sheet 14 and the absorbent body 13 covered by the core cover 15, and compressing the top sheet 14 together with the absorbent body 13 to form By. Thus, by compressing the top sheet 14 and the absorbent body 13 from the surface of the top sheet 14, the concave portion 21 can maintain its shape even in a state in which the weight of the wearer such as a ride is applied, and the compressed row 22 is not crushed. . Thereby, the compressed column 22 can be used to diffuse the liquid and maintain the gas permeability.

As shown in Fig. 5, the plurality of first compression trains 22a inclined at an inclination angle α1 are arranged in parallel with each other. Similarly, the plurality of second compression trains 22b inclined at the inclination angle β1 are arranged in parallel with each other.

On the other hand, in the region of the width D1 between the end regions K1, K3 and the central region K2, the compression train 22 is not formed. That is, a non-formation region 51 in which the concave portion 21 is not formed is provided between the both end regions K1, K3 and the central region K2. Thereby, the compression train 22 of the front and rear crotch portions M1 and M3 and the compression train 22 of the crotch portion M2 are discontinuously formed. Here, as shown in FIG. 5, the width D1 means the width between the lowermost concave portion 21 of the compressed row 22 located in the front end region K1 and the concave portion 21 located at the uppermost row of the compressed row 22 of the central region K2, or The width of the most concave portion 21 of the compressed row 22 of the central region K2 and the recess 21 at the uppermost row of the compressed row 22 of the rear end region K3. In the present embodiment, the width D1 is 15 mm, preferably 10 mm to 50 mm.

The size of each part related to the embossed pattern shown in Figures 5 to 7 is as under.

As shown in Fig. 5, the interval R1 between the adjacent concave portions 21 of the concave portions 21 in the compression row 22 forming the front end region K1 and the rear end region K3 is about 5 mm. Preferably, the interval R1 is in the range of 2 mm to 15 mm. Further, in the present embodiment, the arrangement interval S1 between the arrangement interval S1 of the first compression train 22a and the second compression train 22b is 30 mm. Preferably, the arrangement intervals S1 and S2 are 15 mm to 50 mm. Further, in the present embodiment, the interval S1 between the plurality of first compressed columns 22a is equal to the interval S2 between the plurality of second compressed columns 22b, but may be different values.

Further, as shown in FIG. 6A, the interval L1 between the adjacent concave portions 21 of the concave portions 21 in the compressed row 22 forming the central portion K2 is about 2 mm. Preferably, the interval L1 is in the range of 1 mm to 5 mm. Further, the length L2 of one recess 21 is about 2.5 mm. Preferably, the length L2 is in the range of 1 mm to 50 mm. Further, the width L3 of the concave portion is about 2 mm. Preferably, the width L3 is in the range of 1 mm to 5 mm. In FIGS. 5 and 6A, the concave portion 21 is a parallelogram, but the present invention is not limited thereto, and various shapes such as a circle, an ellipse, and a triangle may be used.

As shown in Fig. 7, the thickness L4 of the uncompressed portion of the top sheet 14 and the main absorption region 25 of the absorbent body 13 is about 3 mm. Preferably, the thickness L4 is in the range of 2 mm to 10 mm. Further, the depth L5 of the deepest portion of the recess 21 is about 2.5 mm. Preferably, the depth L5 is in the range of 1.5 mm to 9.5 mm.

Here, in the compressed row 22 formed by connecting the plurality of concave portions 21, the bottom surface thereof is compressed so that the density of the absorber 13 is high. Therefore, the liquid is easily diffused by the capillary phenomenon on the bottom surface, and a large amount of liquid is present. The column flows through the column, and a part thereof is absorbed from the side wall of the concave portion 21 or the like. On the other hand, since the main absorption region 25 surrounded by the compression train 22 is not compressed, the body fluid can be sufficiently absorbed.

5 and 6A, the interval L1 between the concave portions 21 of the central portion K2 is narrower than the interval R1 between the concave portions 21 of the distal end region K1 and the rear end region K3, and therefore, the compressed column 22 located at the central region K2. The arrangement density of the concave portion 21 (hereinafter also referred to as "first arrangement density") is the arrangement density (hereinafter also referred to as "second arrangement density") of the concave portion 21 of the compression train 22 located in the front end region K1 and The arrangement density (hereinafter also referred to as "third arrangement density") of the concave portion 21 of the compression train 22 located in the rear end region K3 becomes high. Thereby, in the case where a large amount of body fluid is discharged to the central region K2 at the time of urination or the like, the body fluid is absorbed by the main absorption region 25a in the central region K2, and a part of the body fluid flows in the compressed column 22 which is finely filled. The excreted body fluid is rapidly diffused from the central region K2 toward the front end region K1 and the rear end region K3. Then, the main absorption region 25b of the front end region K1 and the rear end region K3 absorbs the body fluid flowing through the central region K2. Therefore, the body fluid does not overflow in the central region K2, but is surely absorbed, and is suitably diffused toward the front end region K1 and the rear end region K3, so that the entire absorbent body 13 can be effectively utilized.

Further, in the present invention, the form of the embossed pattern is not limited to the shape of Fig. 5, and various forms such as a form in which the first arrangement density is not higher than the second arrangement density and the third arrangement density may be employed. For example, three densities of the first arrangement density, the second arrangement density, and the third arrangement density may be set to the same value. This can be achieved, for example, by arranging the embossing patterns of the concave portions 21 formed in the front end region K1, the central region K2, and the rear end region K3 to be the same pattern. Further, the first arrangement density of the central region K2 to be diffused most may be maximized, and the remaining second arrangement density and the third arrangement density may be set to different values.

Further, in the present invention, the form of the embossed pattern is not limited to the form of FIG. 5, and the angle of inclination of the compressed row 22 may be different as long as the non-formed region 51 is provided. And so on.

In the present embodiment, by providing the discontinuous non-formation region 51 in which the compression row 22 is not formed, when a large amount of body fluid flows from the central region K2 and through the compression row 22 toward the both end regions K1 and K3, the concave portion 21 can be formed. The discontinuous non-formation region 51 temporarily infiltrates the body fluid into the absorber to decelerate the flow rate. Thereby, the non-formation region 51 can function as a sputum, and it is possible to suppress the leakage of the body fluid flowing from the waist portion of the diaper 10 toward the end portion of the absorbent body 13 in the rear end direction.

Preferably, the front end region K1 and the rear end region K3 are respectively brought into contact with the wearer's body, and the central region K2 is worn in a state separated from the wearer's body, but the recess is not formed. The position of the non-formed region 51 of 21 is preferably disposed in an area that does not contact the body of the wearer.

Further, as described above, if the non-formation region 51 is disposed in a region that does not contact the body of the wearer, the body fluid that has permeated can be absorbed in a state in which the body is separated.

Further, by providing the non-formation region 51 of the compression train 22 having no longitudinal direction component of the absorbent body 13, the absorbent body 13 can be easily bent in the non-formation region 51, so that the wearability of the wearer can be improved.

Further, since the non-formation region 51 in which the concave portion 21 is discontinuous temporarily allows the body fluid to permeate the absorber 13, the body fluid can flow not only into the continuous compression train 22 but also into the adjacent plurality of compression trains 22, thereby further enhancing the diffusion of the body fluid. Sex.

[Second embodiment]

Fig. 8 is a plan view showing the upper side of the top sheet 14 of the absorbent body 13 of the disposable diaper 10 of the second embodiment of the present invention.

The first point of the shape of the absorber 13 of the present embodiment which is different from the shape of the absorber 13 of the first embodiment is spaced from the space S1 and the second compressed row 22b of the first compression train 22a of the first embodiment. In S2 comparison, the interval S3 between the first compressed row 220a and the interval S4 between the second compressed row 220b of the front end region K1 and the rear end region K3 of the present embodiment are formed to be wider. Further, the second point is different from the end region K1 and the rear end region K3 before the embodiment, and the width D2 of the concave portion 21 of the compressed row 220 is not provided along the longitudinal direction (front-rear direction) of the absorber 13. The point at which the region 82 is formed.

As shown in Fig. 8, the inclination angles α1 and β1 of the first compression train 220a and the second compression train 220b with respect to the imaginary line P of the present embodiment are the same as the inclination angles α1 and β1 of the first embodiment, but Can be different values.

On the other hand, the area of the main absorption region (uncompressed region) 25a surrounded by the first compressed row 220a and the second compressed row 220b of the central region K2 of the present embodiment is the same as the central region K2 of the first embodiment. The area of the absorption region 25a is the same, but may be a different value. Further, the area of the main absorption region 25b surrounded by the first compressed row 220a and the second compressed row 220b of the front end region K1 and the rear end region K3 of the present embodiment is formed to be larger than the central region K2 of the first embodiment. The area of the absorption region 25b is wide.

In the present embodiment, the non-formation region 81 having the width D1 between the end regions K1, K3 and the central region K2 is the same as the non-formation region 81 provided in the front end region K1 and the rear end region K3, and extends in the longitudinal direction of the absorber 13. The non-formed region 82 of the width D2 does not form the compressed column 220. That is, the compression columns 220 of the front end region K1 and the rear end region K3 are formed discontinuously in the width direction. The width D1 of this embodiment is 15 mm, preferably 10 mm to 50 mm. In addition, the width D2 is 10mm, It is preferably in the range of 5 mm to 20 mm.

Further, as shown in FIG. 8, the arrangement interval S3 of the first compression train 220a of the front end region K1 and the rear end region K3 is 30 mm. Preferably, the arrangement interval S3 is 10 mm to 30 mm. The arrangement intervals S1 and S2 of the first compression train 220a and the second compression train 220b of the central area K2 are 20 mm. Preferably, the arrangement intervals S1 and S2 are 15 mm to 40 mm. In the present embodiment, the intervals S1 and S2 and the arrangement intervals S3 and S4 are set to the same value, but they may be different values.

The absorber 13 of the present embodiment is configured such that the first arrangement density of the concave portion 21 of the compression row 220 located in the central region K2 is smaller than the second arrangement density of the concave portion 21 of the compression column 220 located in the front end region K1 and the rear arrangement region K3. The third arrangement density of the concave portion 21 of the compression train 220 is high, and a non-formation region 81 in which the concave portion 21 is not formed is provided between the central portion K2 and the both end portions K1 and K3, so that absorption with the first embodiment can be obtained. Body 13 has the same effect. Further, in the present invention, the compression train 220 may be formed by one continuous recess, or the plurality of recesses 21 may be intermittently arranged at intervals.

Further, in the present embodiment, the non-formation region 82 in which the concave portion 21 is discontinuous is provided along the longitudinal direction of the absorber 13 in the distal end region K1 and the rear end region K3, even if the wearer has a round shape such as a waist circumference. Further, the absorbent body 13 can be bent along the non-formation region 82, so that the fit of the wearer can be improved.

[Third embodiment]

Fig. 9 is a plan view showing the upper side of the top sheet 14 of the absorbent body 13 of the disposable diaper 10 of the third embodiment of the present invention.

The shape of the absorber 13 of the present embodiment and the first embodiment and the The first point of the shape of the absorber 13 of the second embodiment is that the interval S3 between the first compression row 230a and the interval S4 of the second compression row 230b in the central region K2 of the present embodiment is larger than the central region of the first embodiment. The interval S1 between the first compressed column 22a of K2 and the interval S2 of the second compressed column 22b form a wider point. Further, in a second point, an additional compression train (third pattern) 240 is formed in the central region K2 and along the longitudinal direction of the absorber 13 connecting the intersections of the first compression row 230a and the second compression row 230b, and A point of a convex arrow shape is formed in a direction opposite to the front end region K1 and the rear end region K3. That is, the plurality of concave portions 21 formed in the central portion K2 are arranged to further form the additional compressed rows 240 extending in the third direction different from the first direction and the second direction. Further, the interval S3 between the first compression train 230a and the interval S4 between the second compression train 230b in the front end region K1 and the rear end region K3 in the present embodiment are the same as those in the second embodiment, and are formed in the same manner as in the first embodiment. The intervals S1 and S2 of the first compression train 22a and the second compression train 22b are wide. And, the third difference is that the central area K2 does not coincide with the underarm part M2. As shown in Fig. 9, the central portion K2 has a shape in which the absorbent body 13 has a protruding portion in the front and rear directions, and the front end region K1 and the rear end region K3 each have a predetermined interval in the front and rear direction of the central region K2. (D3) The shape of the configuration. In the present embodiment, as shown in Fig. 9, a non-formation region 91 having a width D3 is provided between the central region K2 of the absorber 13 and the end regions K1 and K3 interposed between the central regions K2. In the present embodiment, the compression array 230 is not formed in the non-formation region 91 between the end regions K1, K3 and the central region K2. That is, the front end region K1 and the rear end region K3 and the central region K2 are discontinuously formed in the compressed row 230. The width D3 of this embodiment is 8 mm, preferably 5 mm to 20 mm.

The absorber 13 of the present embodiment satisfies the central region K2. The first arrangement density of the recesses 21 of the compression column 230 is higher than the second arrangement density of the recesses 21 of the compression columns 230 of the front end region K1 and the third arrangement density of the recesses 21 of the compression columns 230 of the rear end region K3. Further, since the non-formation region 91 in which the concave portion 21 is not formed is provided between the central region K2 and the both end regions K1 and K3, the same effects as those of the absorbent body 13 of the first embodiment and the second embodiment can be obtained. Further, the compression columns 230 and 240 of the present invention may be formed by one continuous concave portion, or a plurality of concave portions 21 may be intermittently arranged at intervals.

Further, in the present embodiment, since the longitudinally continuous concave portion is formed in the central portion K2, it can be bent in the longitudinal direction of the concave portion. Therefore, for example, when the wearer is a male, the arrow-shaped region of the distal end region K1 side can be wrapped. When the male device is inserted, the arrow-shaped region on the side of the rear end region K3 is brought into contact with the shape of the buttocks of the wearer, and the absorbent body 13 is bent along the non-formation region 91, so that the fit of the wearer can be improved. Further, in the case of a female, it can be bent into a W shape along the concave portion to align the absorbent body 13 to a position close to the urination hole, thereby reducing leakage of urine.

The disposable diaper of the present invention can be applied to any of adults and infants. Further, in each of the above embodiments, the adhesive diaper has been described as an example, but it is of course also applicable to the underpants type diaper in the present invention. Further, the absorbent article of the present invention is not limited to diapers, and can be applied to all other types of absorbent articles such as absorbent pads.

Further, the shapes of the non-formation regions 51, 81, 82, and 91 of the above-described respective embodiments have a shape having a constant width. However, the shape is not limited thereto, and may be any one having a constant width and a curve. shape.

Further, in the present invention, as long as the effect of improving the fit of the wearer and suppressing the leakage from the front end portion of the absorbent body 13 can be obtained, it is also allowed to be unconnected. The formation of non-formed areas continues.

In the first embodiment described above, the width D1 between the distal end region K1 and the central region K2 is the same as the distance D1 between the rear end region K3 and the central region K2, but may be different. This is also the same for the width D2 of the second embodiment and the width D3 of the third embodiment.

13‧‧‧Acceptor

13a‧‧‧Gap section

14‧‧‧Top sheet (surface sheet)

21‧‧‧ recess

22‧‧‧Compressed columns

22a‧‧‧First compression column (first pattern)

22b‧‧‧Second compression column (second pattern)

25a, 25b‧‧‧Main absorption area (uncompressed area)

51‧‧‧ Non-formed areas

D1‧‧‧The width of the non-formed area

K1‧‧‧ front end area

K2‧‧‧Central Area

K3‧‧‧ back end area

M1‧‧‧Previous part

M2‧‧‧胯下下

M3‧‧‧ later part

N1‧‧‧Compressed portion forming area (embossed pattern forming area)

N2‧‧‧Compressed non-formed area (embossed pattern non-formed area)

P‧‧‧ imaginary line

Front and back spacing between adjacent recesses in the R1‧‧‧ compression column

S1‧‧‧ The first compression column formation interval

S2‧‧‧ formation interval of the second compressed column

Α1, β1‧‧‧ tilt angle

Claims (9)

An absorbent article comprising a liquid permeable surface sheet, a non-liquid permeable back sheet, and an absorber disposed between the surface sheet and the back sheet; wherein the absorbing system is on the surface sheet side The plurality of concave portions are formed on the surface, and the plurality of concave portions are arranged to form a plurality of first patterns extending in the first direction and a plurality of second patterns extending in the second direction intersecting the first direction. A non-formation region in which the plurality of concave portions are not formed is provided between the central region of the absorber and the end regions of the central region. The absorbent article according to claim 1, wherein the arrangement density of the plurality of concave portions in the central region is higher than the arrangement density of the plurality of concave portions in the both end regions. The absorbent article according to claim 1 or 2, wherein the plurality of concave portions are intermittently formed in the first direction and the second direction, and the width between the plurality of concave portions formed in the both end regions is The width between the plurality of recesses formed in the central region is wider. The absorbent article of claim 1 or 2, wherein the plurality of concave portions formed in the central region are further formed into a third pattern extending in a third direction different from the first direction and the second direction Arranged in a way. The absorbent article of claim 3, wherein the plurality of concave portions formed in the central region are arranged to further form a third pattern extending in a third direction different from the first direction and the second direction . An absorbent article according to claim 1 or 2, wherein in the above two end regions, on A non-formed region in which the plurality of concave portions are not formed is provided in a direction in which the both end regions are opposed to each other. The absorbent article according to claim 3, wherein in the both end regions, a non-formation region in which the plurality of concave portions are not formed is provided in a direction opposite to the both end regions. The absorbent article according to claim 4, wherein in the both end regions, a non-formation region in which the plurality of concave portions are not formed is provided in a direction opposite to the both end regions. The absorbent article according to claim 5, wherein in the both end regions, a non-formation region in which the plurality of concave portions are not formed is provided in a direction opposite to the both end regions.