TWI573572B - Body filler article and method of manufacturing the same - Google Patents

Description

Body fluid absorbent article and method of manufacturing same

The present invention relates to a body fluid absorbent article such as a sanitary napkin, a urine absorbing pad, a sanitary pad, and the like, and more particularly to a body fluid absorbent article having a press groove pattern on its surface and a method for producing the same.

Conventionally, a body fluid absorbent article having a pattern of a press groove formed in a concave shape from the surface thereof has been known. For example, Patent Document 1 discloses a method in which: in an end portion, a cross portion formed by a plurality of lines and a first press portion forming a curved portion formed around the end portion; and a mesh positioned in the central region A body fluid absorbent article of the press portion of the second pattern.

[Advanced technical literature] [Patent Literature]

[Patent Document 1] US Patent Publication No. 2008/0281287

According to the body fluid absorbent article disclosed in Patent Document 1, the press portion formed with the first and second patterns improves the fit of the wearer's body, and controls the flow of the body fluid to prevent the leak detection. . Further, the press portions of the first and second patterns have a geometric appearance, and it can be said that the decorative effect is exhibited.

However, in its manufacturing process, the machine direction is orthogonal to the longitudinal direction of the product. In the case where the frame of the article is conveyed along the manufacturing line (the so-called side stream method), the dispersion pressure may be uneven in the portion having a large length in the lateral direction (mechanical direction). At this time, it is difficult to give the desired shape, and the outline shape thereof becomes unclear, and there is a concern that the above effects cannot be exhibited.

On the other hand, in order to solve such a problem, although the force applied to the embossing means (embossing roller) is increased by the pressing means (pressing roller), the pressure can be increased, but at this time, there is an embossing means. The embossed pin is easy to wear. Further, when pressing with a relatively strong load, a part of the top sheet of the article is broken, which not only impairs the appearance but also causes leakage of body fluid.

Accordingly, the object of the invention is to provide a body fluid absorbent article which can be more clearly seen in a decorative portion having a decorative effect in a press groove pattern without being pressed with a relatively large force. .

According to a first aspect of the invention, there is provided a vertical structure and a horizontal axis, comprising: an absorbent structure having a skin facing surface and a non-skin opposing surface, and a liquid-absorbent core material; and the core material The present invention is a body fluid absorbent article which is formed into a concave shape from the opposite surface of the skin toward the non-skin opposing surface.

According to a first aspect of the invention, the press groove groove pattern has a first functional portion that extends in a ring shape in a direction of the vertical axis; The decorative portion in the first functional portion is divided into a decorative pressing region by a part of the first functional portion and the decorative portion, and is oriented in a direction of the vertical axis that is linearly pressed along the wide direction at the time of manufacture. The first functional portion and the aforementioned decoration are formed such that the area of the decorative pressing region per unit width is smaller than the area of the outer end edge of the first functional portion of the first functional portion in the direction of the longitudinal axis. unit.

According to a second aspect of the invention, in the method for producing a body fluid absorbent article, the absorbent structure including the top sheet and the body fluid absorbent core is formed, and the direction of the horizontal axis of the article is parallel to the machine direction, and the conveyance is carried out. And a pressure roller that is set to have a constant force on the absorbing structure load, and is disposed opposite to the pressure roller, and is coordinated with the pressure absorbing roller; An embossing process comprising an embossing roll for forming an embossing pattern for the press groove pattern on the surface of the absorbent structure, and pressing the absorbent structure to form an area of the core material of the absorbent structure Forming the aforementioned press groove groove pattern.

According to one aspect of the first aspect of the invention, the second functional portion of the predetermined shape is between the decorative portion in the first functional portion and the horizontal axis.

According to one aspect of the first aspect of the invention, the absorbent structure has a discharge port abutting a discharge port facing the wearer; and a direction of the vertical axis of the discharge port contact region The first region of the outer side and the second region located on the opposite side of the first region are formed in at least the first region among the first region and the second region.

According to one aspect of the first aspect of the invention, at least the plurality of high pressure press portions are formed in at least the decorative portion of the press groove pattern.

According to one aspect of the first aspect of the invention, the wide dimension of the decorative portion is smaller than a width of the second functional portion.

According to one aspect of the first aspect of the invention, the decorative portion includes: the first and second decorative portions, wherein the first and second decorative portions are inclined with respect to the longitudinal axis.

According to one aspect of the first aspect of the invention, the first decorative portion and the second decorative portion are displaced relative to each other in a direction of the longitudinal axis.

According to one aspect of the first aspect of the invention, the decorative portion is formed in the first and second regions, and the decorative portions formed in the first and second regions are mutually opposed to the horizontal axis and the vertical axis Form an asymmetry.

According to one aspect of the first aspect of the invention, the absorbent structure includes: a liquid-permeable top sheet positioned on the skin facing surface side; and a liquid-impermeable property on the non-skin opposing surface side a back sheet; and interposed between the top sheet and the front sheet.

According to the absorbent article according to the first or second aspect of the invention, the press-groove groove pattern is formed in the body fluid-absorbent core material region, and a part of the press-groove groove pattern and the decorative portion are formed. The area per unit width (line width width) of the decorative pressing zone is smaller than the area per unit width of the outer edge of the first functional portion in the direction of the longitudinal axis, so even by When the pressure roller is pressed with a certain force, it is decorated The crushing zone forms a relatively high pressure on the load. Thereby, the outline shape of the aforementioned decorative portion can be more stereoscopically and clearly displayed, and the desired decorative effect can be exerted.

[Formation for carrying out the invention] <First embodiment>

Hereinafter, the sanitary napkin 10 will be described as an example of the body fluid treatment article of the present invention. Referring to Figures 1 to 3, the sanitary napkin 10 has a longitudinal direction P and a transverse axis Q orthogonal thereto; a surface 10A and a 10B inside; and a skin facing surface and a non-skin opposing surface, and with respect to the longitudinal axis P and The horizontal axis Q is almost symmetrical. However, as will be described later, the first and second decorative portions 22 and 23 formed in the press groove pattern 20 of the first region 16 and the second region 17 are asymmetric with respect to the vertical axis P and the horizontal axis Q.

The sanitary napkin 10 has first and second end edges 10a and 10b that are convex outward in the direction of the longitudinal axis P, and both side edges 10c and 10d, and includes: a transparent surface on the opposite side of the skin. a liquid top sheet 11; a back sheet 12 on the non-skin facing side; a liquid-absorbent core 13 interposed between the sheets 11, 12; and a top sheet 11 and a core Intermediate sheet 14 between the materials 13. Further, for convenience of explanation, the sanitary napkin 10 is divided into the intermediate region 15 at the position of the horizontal axis Q, the first region 16 extending from the intermediate region 15 toward the first end edge 10a, and the intermediate region 15 toward the second end. The second region 17 where the edge 10b extends. In the state of use of the sanitary napkin 10, the wearer's mouth is in the intermediate zone 15.

The sanitary napkin 10 is formed with a press groove pattern 20 which is formed in the presence of the core material 13 and whose surface is formed in a thickness direction from the surface. The press groove pattern 20 has a low pressure press portion 19c in the pattern 20 and a plurality of high pressure press portions 19a, 19b (see Fig. 3) which are more concave than this, and have a longitudinal extension in the direction of the longitudinal axis P. a first functional portion 21 having a long ring shape; first and second decorative portions 22 and 23 having a heart shape in the first functional portion 21; and a convex curved portion toward the first and second end edges The second functional unit 24 of the pair. As described above, by forming the high-density region in which the press-groove pattern 20 is formed in the presence of the core material 13, the body fluid can be quickly absorbed, and in particular, the first and second functional portions 21 and 24 function as hinges, and can be worn. The user's body improves the adhesion. Further, the pair of second functional portions 24 are not formed on the lateral axis Q of the first and second decorative portions 22 and 23 as shown, but may be formed at the outer end of the first functional portion 21. The edges 21a and 21b are interposed between the first and second decorative portions 22 and 23.

The first and second decorative portions 22 and 23 may be formed only in one of the first and second regions 16 and 17 and may be formed in the intermediate region 15 as long as the desired decorative effect can be achieved. Further, the first functional portion 21 may not be annular, and the first and/or second regions 16 and 17 may be at least surrounded by the shapes of the first and second decorative portions 22 and 23. In addition, the second functional portion 24 may be straight or not, as long as it can achieve the effect described later.

The top sheet 11 and the back sheet 12 are extended from the peripheral edge of the core member 13 and joined to each other via a hot-melt adhesive, and are formed in a curved shape extending in the direction of the horizontal axis Q on the side of the first end edge 10a. The first tail 28; and a curved second portion extending in the direction of the horizontal axis Q on the second end edge 10b side Tail 29. The back sheet 12 is extended outward in the direction of the horizontal axis Q from the top sheet 11, and is fixed to the pair of side sheets 31 on the skin facing surface thereof, by the extension and side of the back sheet 12 The partial sheet 31 is formed with side flaps 32. Further, a wing portion 33 having a symmetrical position with respect to the longitudinal axis P is formed by a part of the side flaps 32.

The top sheet 11 may be formed of various fiber nonwoven fabrics having liquid permeability, for example, an air flow fiber nonwoven fabric having a mass of about 15 to 45 g/m ² , a porous plastic film, or a laminated sheet or the like. Further, the back sheet 12 may be formed of a liquid-impermeable and moisture-permeable plastic film, a liquid-impermeable fiber nonwoven fabric, or a laminated sheet or the like.

The intermediate sheet 14 can be formed of various types of fiber nonwoven fabrics which are air-permeable and liquid-permeable, and can be formed, for example, by air-flow non-woven fabric having a mass of about 15 to 45 g/m ² , so that the recoil resistance to the wearer's skin is improved and does not cause Unreasonable diffusion of the body fluid, and separation of the top sheet 11 and the core material 13 to prevent the body fluid from unreasonably flowing back to the top sheet 11. Further, in the sanitary napkin 10, the intermediate sheet 14 may be omitted.

The side sheet 31 may be made of a liquid-impermeable spunbonded spunbond (SMS) fiber non-woven fabric, a spunbonded fiber non-woven fabric, or a polyethylene plastic sheet having a mass of about 10 to 30 g/m ² or the like. The laminated sheets are formed.

The core material 13 has superabsorbent polymer particles (SAP) mixed with water-absorbent energy having an insoluble water content of 10 times or more of its own mass, and fluff pulp, and a small amount of thermoplastic synthetic fiber (staple fiber). The liquid-absorbent core 34 which is shaped into a predetermined shape; and a liquid-permeable core package of the entire liquid-absorbent core 34 for the purpose of improving shape retention and liquid diffusibility Layer sheet 35.

Referring to Fig. 2, on the inner surface 10B side of the sanitary napkin 10, that is, on the outer surface of the back sheet 12, a pressure-sensitive adhesive is formed which extends in the direction from the center portion toward the vertical axis P. The first stop portion 37 of the four lines. Further, a second stopper portion 39 formed of a pressure-sensitive adhesive is disposed on the outer surface of the wing portion 33. The first and second stopper portions 37 and 39 are covered with the separators 40 and 41 made of a plastic film or a fiber nonwoven fabric.

Although not illustrated, the outer peripheral edge of the sanitary napkin 10 formed by the front and rear end edges 10a and 10b and the side edges 10c and 10d may be formed by a known joining means such as hot embossing, ultrasonic processing, or the like. Various heat fusion means join the sheet members to form a seal portion. Further, although not in the drawings, in addition to the outer peripheral edge joined by the sealing portion, the sheet members which are superposed on each other are joined via a known hot-melt adhesive.

Referring to Fig. 3, the form of the press groove pattern 20 formed in the first region 16 and the second region 17 is asymmetrical with respect to the vertical axis P and the horizontal axis Q, but the form thereof is almost the same. Therefore, regarding the form of the pattern, only the first region 16 will be mainly described.

The absorbent structure 45 is composed of a top sheet 11 from which the side sheets 31 and the back sheet 12 are removed from the sanitary napkin 10, and the intermediate sheet 14 and the core member 13. The absorbent structure 45 is not necessarily provided with the top sheet 11 and/or the intermediate sheet 14 as long as the desired effect of the present invention is achieved, and the shape retaining function can be imparted thereto.

Referring to Figure 4 together with Figure 3, the first in the press groove pattern 20 The functional portion 21 and the second functional portion 24 are arranged in a state in which a plurality of high-pressure press portions 19a having a slight angular shape are separated in a dotted shape. On the other hand, the first and second decorative portions 22 and 23 have a substantially heart-shaped outline, and among these, a plurality of slightly rounded high-pressure press portions 19b are arranged in a dot shape in a state of being separated by a given size. The high pressure press portions 19a and 19b may be formed only on the first and second decorative portions 22 and 23. As described above, when the high pressure press portions 19a and 19b are formed in the first and second decorative portions 22 and 23, the low pressure press portions 19c and the high pressure press portions 19a and 19b are alternately arranged, so that the design shape can be made more three-dimensional and Clearly seen. As long as the effects of the present invention described later can be achieved, the high pressure press portions 19a and 19b may not be formed in the press groove pattern 20.

The dimension L1 of the core material 13 in the direction of the longitudinal axis P is about 180 to 220 mm, and the dimension L2 of the first region 16 is about 50 to 90 mm. The dimension W1 of the direction X of the horizontal axis Q of the core material 13 is about 50 to about 90 mm, and the dimension W2 of the direction X of the horizontal axis Q between the largest width portions 49 of the first functional portion 21 having the largest width is about 40 to about 60 mm. . The first functional portion 21 is gradually narrowed from the maximum width portion 49 toward the outer end edge 21a, and is narrowed toward the horizontal axis Q, and the first and second decorative portions 22 and 23 are located near the maximum width portion 49 thereof. between. The first and second decorative portions 22 and 23 are disposed to be inclined with respect to the vertical axis P, and the distal end portions 22a and 23a are opposed to each other. For convenience of explanation, between the first functional portion 21 and the second functional portion 24, the decorative pressing region 51 formed by a part of the first functional portion 21 and the first and second decorative portions 22 and 23 is formed (FIG. 5). In the region where the two-point chain is coiled, a part of the first functional portion 21 and portions other than the first and second decorative portions 22 and 23 are removed. Minute. ).

6 is a view showing an embossing process 52 of a part of the manufacturing process of the sanitary napkin 10, FIG. 7 is a partial enlarged view of the outer peripheral surface of the embossing roll 55, and FIG. 8 is a manufacturing process of the sanitary napkin 10; A part of the absorbent structure 45 is enlarged in plan view. In Fig. 6, the machine direction is indicated by MD, the orthogonal direction is indicated by CD, and in Fig. 8, the areas S1 to S4 of the press groove pattern 20 in the line pressure regions T1 to T4 are indicated by oblique lines.

As shown in FIG. 6, a plurality of absorbing structures 45 are disposed on a conveyor belt (transport means) 53 that moves in the machine direction MD. The absorbent structure 45 is formed by laminating the above-described top sheet 11, intermediate sheet 14, and core material 13, and has a substantially uniform desired thickness. The absorbent structure 45 is subjected to an embossing process 52 after forming the desired work for forming the press structure, and a press groove pattern 20 is formed on the surface thereof.

Specifically, the embossing process 52 includes a pressure roller 54 that is positioned above the conveyor belt 53 and that is smooth toward the clockwise outer peripheral surface, and an embossing roller 55 that is disposed opposite to the counterclockwise rotation. . An embossed pattern 57 heated to a predetermined temperature, which is the same size as the press strip groove pattern 20, is formed on the outer peripheral surface 55a of the embossing roll 55. The embossed pattern 57 has a plurality of convex portions 56a, 56b corresponding to the high pressure press portions 19a, 19b of the press groove pattern 20. Specifically, the embossed pattern 57 protrudes from the outer peripheral surface 55a of the embossing roll 55, and the convex portions 56a and 56b protrude more than other regions of the embossed pattern 57. Further, the convex portion 56a has a slightly angular shape in cross section corresponding to the high pressure press portion 19a of the press groove pattern 20, and the convex portion 56b and the high pressure press portion The cross section corresponding to 19b has a slightly rounded shape.

The pressing roller 54 and the embossing roller 55 are almost the same shape and have the same radius of curvature, the diameter D is about 250-350 mm, and the width dimension W3 of the orthogonal direction CD is about 400-500 mm, and each is about 0-1.2 mm. Separate states are configured oppositely. The absorbent structure 45 having a thickness of about 1.5 to 5.0 mm is passed through a gap formed between the pressure roller 54 and the embossing roller 55 in a state of being pressed, whereby the absorbing roller 55 can be loaded on the absorbent structure 45. The line pressure of the embossed pattern 57 and the outer peripheral surface of the press roller 54.

The pressure applied to each portion of the absorbent structure 45 is in accordance with the pressure-bonding area of the absorbent structure 45 and the embossed pattern 57, that is, in accordance with the linear width in the machine direction MD as a unit width. The size of the total area of the embossed pattern 57 of the region in which the direction CD extends is different. Therefore, the smaller the pressure contact area in the region to be pressed, the higher the pressure applied to the portion to be crimped, and the larger the pressure contact area, the higher the pressure applied to the portion. small.

Referring to Fig. 7 and Fig. 8, the regions T1 to T4 indicated by the one-point chain line having a certain width are the ones indicating the line pressure region of the absorbing structure 45 in the embossing process 52, which is constant. The unit width (line width) W3 is about 3.0 mm. The first area S1 of the press groove pattern 20 in the line pressure region T1 (the vicinity of the outer edge 21a of the first functional portion 21) is the total area of the press groove pattern 20 in the line pressure region T2, In other words, the second area S2 formed by the sum of the areas S2a and S2c of a part of the first functional unit 21 and the area S2b of a part of the second functional unit 24 becomes larger. Moreover, the second area S2 of the line pressure region T2 is more than a decorative press The third area S3 formed by the total area S3a, S3c of the first functional portion 21 and the total area S3b of the first decorative portion 22 in the line pressure region T3 in the region 51 becomes larger.

In addition, the second area S2 of the line pressure region T2 is larger than the area S4a, S4e of the first functional portion 21 in the line pressure region T4 in the decorative press region 51, and the first and second decorative portions 22 The fourth area S4 formed by the sum of the areas S4b, S4c, and S4d of a part of 23 becomes larger. The decorative pressurizing field 51 is exactly the same, that is, even in any portion of the decorative pressurizing field 51, the area of the press groove pattern 20 in the line pressure region is larger than the first and second areas S1 of the line pressing regions T1, T2. S2 is formed smaller.

Specifically, the first area S1 of the region T1 line pressure of from about 22.0 ~ 55.0mm ^2, over about 30.0 ~ 50.0mm ^2, the line pressure region T2 in the second area S2 of approximately 18.0 ~ 60.0mm ^2, over the approximately 35.0 ~ 55.0mm ^2, further, the area S2a of the second area S2 is an area S2c of about 15.0 ~ 30.0mm ^2, an area of about 3 ~ 30mm ² S2b is over. Further, the fourth area S3 in the line pressure region T3 and the fourth area S4 in the line pressure region T4 are about 15.0 to 30.0 mm ² , preferably about 20.0 to 25.0 mm ² , and further, the area S3b or the area S4b. The sum of S4c and S4d is about 8.0~12.0mm ² , and the ideal is about 8.5~11.0mm ² .

In this way, in the decorative pressurizing field 51, since the total area of the press groove pattern 20 which is wide in the line width width (about 3 mm) is smaller than that of other regions, the load is higher than that in the region. 1 The upper end edge 21a of the functional portion 21 and the second functional portion 24 have a higher pressure and a density thereof Higher. Further, since the first and second decorative portions 22 and 23 located in the decorative press region 51 are stably compressed, they are not twisted, and the shape of the desired shape can be surely performed. As a result, since the outline shape becomes clear, it is easy to change from the outside, and therefore, the desired decorative effect can be exhibited. In particular, the first and second decorative portions 22 and 23 are formed in a core material 13 having a large thickness as compared with a portion formed only by the sheet members such as the first and second tail fins 28 and 29 and the side flaps 32. There is a region, so the decorative pattern becomes more three-dimensional and the decorative effect is excellent.

Further, the press-like pattern having a decorative effect is also conventionally present, but as described above, in the present embodiment, the first and second decorative portions 22 and 23 have substantially the same shape, and the sizes are different in size. By being disposed in a state of being inclined with respect to the vertical axis P, the area of the press groove pattern 20 in each of the line pressing regions in the decorative pressurizing region 51 is formed to be larger than the first area S1 and the second function portion located at the outer edge 21a. The second area S2 of 24 is smaller. In other words, the shape, the inclination, and the like are adjusted so that the total area of the first decorative portion 22 and the second decorative portion 23 in the arbitrary line pressing region is not larger than necessary. Thereby, the above-described effects which cannot be exhibited by a press pattern having other conventional decorative effects can be achieved.

Moreover, in order to achieve such an effect, in order to make the outline shape of the first and second decorative portions 22 and 23 clearer, for example, the convex portion 56b of the embossed pattern 57 is used as the specific convex portion 56a. Further, the pressure can be further increased by increasing the force applied downward by the pressure roller 54. However, in the former case, the convex portion 56a becomes easy to wear, and there is a concern that the embossing roller 55 must be exchanged at an early stage, and in the latter case, there is a top surface. A part of the sheet 11 is broken, and the body fluid leaks and the appearance is impaired. In the present invention, since the above-described effects are achieved by adjusting the area of the press groove pattern 20 in the line pressure regions T1 to T4 in the respective portions, there is no such advantage.

In the present embodiment, the wide size of the first and second decorative portions 22 and 23 is smaller than the wide size of the first functional portion 21 and the wide size of the second functional portion 24. When the width of the first and second decorative portions 22 and 23 is relatively small, the outline shapes of the first and second decorative portions 22 and 23 can be made clear, and the first area S1 can be relatively increased. With the second area S2, the desired crimping area can be ensured.

In the present invention, the thickness of the liquid-absorbent core on the front side of the press-groove pattern 20 is 1.0 to 3.0 mm, and the thickness of the low-pressure press portion 19c is 0.3 to 0.5 mm. When the thickness of the low-pressure section 19c is 0.3 mm or less, the difference in the thickness dimension of the press-groove pattern 20 and the region where the press-free portion 20 is not formed becomes large, so that the top sheet 11 may be damaged during production or use. consider. On the other hand, when the thickness of the low-pressure press portion 19c is 0.5 mm or more, the difference in thickness between the low-pressure press portion 19c and the high-pressure press portions 19a and 19b is small, and the contour shapes of the first and second decorative portions 22 and 23 are The resulting decorative appearance will have unclear concerns.

Further, the thickness of the high pressure press portions 19a and 19b is 0.01 to 0.1 mm. When the thickness of the high pressure press portions 19a and 19b is 0.01 mm or less, the top sheet 11 may be damaged during production, and when it is 0.1 or more, the difference in thickness from the low pressure press portion 19c is small, and the body fluid is absorbed. After that, the absorbent core will have a tendency to float easily.

<Method for Measuring Thickness Dimensions of Each Part of Absorbing Structure 45>

The absorbent structure 45 is taken out from the sanitary napkin 10 and placed in a container, and the liquid nitrogen is immersed in the container, and then cut into a desired size to prepare a sample. After that, the temperature of the sample is placed until it reaches normal temperature. Next, the thickness (mm) of each part of the sample was measured at an magnification of 50 times using an electron microscope (VE7800, manufactured by Keens, Japan), and the thickness of the high pressure press portions 19a and 19b and the low pressure press portion 19c of the absorbent structure 45 was measured. (mm).

<Second embodiment>

Fig. 9 is a plan view similar to Fig. 5 of the second embodiment of the present invention. In the present embodiment, the first decorative portion 22 and the second decorative portion 23 of the press groove pattern 20 do not intersect in the direction X (orthogonal direction CD) of the horizontal axis Q, and the intersection with the above In the decorative pressurizing field 51, the total area of the press groove pattern 20 in the line pressing regions T3, T4 can be made smaller. In addition, the first decorative portion 22 and the second decorative portion 23 may partially intersect in the direction of the horizontal axis Q and may be displaced from each other in the direction of the vertical axis P as long as the effect of the present embodiment is achieved.

<Third embodiment>

Figs. 10(a), (b) and (c) are plan views similar to Fig. 8 of the third embodiment of the present invention. In the present embodiment, the first and second decorative portions 22 and 23 of the press groove pattern 20 are not in a heart shape, and have a pattern of six petals. In addition, for the convenience of explanation, the pressure in each of the line pressure regions K1 to K5 The area of the strip pattern 20 is indicated by a diagonal line.

Table 1 above shows the press groove in each of the line pressure regions K1 to K5 when the embossing process 52 is pressed under the load 15kgf/cm ² in various press patterns. The area of the pattern 20 (mm ² ) and the like. Specifically, in the first embodiment, as shown in FIG. 10(a), the petals (60, 61) of the first decorative portion 22 and the direction of the horizontal axis Q (the orthogonal direction CD at the time of manufacture) are almost parallel. In the state, the second embodiment is arranged such that the clockwise direction is rotated by about 30 degrees (Fig. 10(b)), and the third embodiment is further rotated in the clockwise direction. The press pattern of the person placed in the state of 15 degrees (Fig. 10(c)). Table 1 shows the "area of the press groove pattern 20" and the "area of the first decorative portion 22" and the "only the second decorative portion 23" in each of the line pressing regions K1 to K5 in the first to third embodiments. area".

As shown in Table 1, the area of the first functional portion 21 and the first decorative portion 22 in the line pressure region K2 is formed to be larger than that of the first functional portion 21 even in any one of the first to third compression patterns in the first to third embodiments. The area of the line pressing region K1 in the end edge 21a is smaller than about 42 mm ² . On the other hand, the total area of the first and second decorative portions 22, 23 and the first functional portion 21 in the line pressure regions K3 to K5 (the total area of the press groove pattern 20) may exceed the line pressure depending on the press pattern. The area of the area K1, for example, the area of the press groove pattern 20 of the line pressure area K4 in the first embodiment, the area of the press groove pattern 20 of the line pressure area K3 in the second embodiment, and the area in the third embodiment The area of the press groove pattern 20 of the line pressing region K3 is all 42 mm ² or more, and it cannot be said that the above effects of the present invention are achieved.

However, in any of the press patterns, even if it has an area larger than the area of the press groove pattern 20 of the line pressure region K1, in other press patterns, there is a press groove pattern 20 which forms the line pressure region K1. In the case of an area below the area, for example, in the line pressure region K4 of the first embodiment, the area is about 55 mm ² , and in the second embodiment, the area is about 41 mm ² , and the area of the press groove pattern 20 in the line pressure region K1 is formed. smaller.

As described above, the first decorative portion 22 and/or the second decorative portion 23 having the given shape are inclined at an arbitrary angle with respect to the vertical axis P and/or the horizontal axis Q, and the decorative pressing region 51 can be freely adjusted. The area of the press groove pattern 20 in the line pressing region can be freely selected to satisfy the "area of the press groove pattern 20 of the line pressing region K1" as the element for achieving the effect of the present invention> in the decorative press field 51 The pressing pattern of the condition of the area of each of the line pressure regions K2 to 5.

The first and second decorative portions 22 and 23 have a decorative effect and In addition to the heart-shaped pattern, the above-described effects of the present invention can convey various well-known patterns such as a star pattern, a pattern, and the like, various known shapes such as trapezoids and rhombuses, and desired information such as arbitrary geometric shapes and characters. Display elements, etc. In particular, when it is used as a product for daily use, night use, nighttime and daytime use, and a large amount of daily discharge of body fluids, a small amount of daily use, etc. Useful information (image) is ideal.

In addition, each of the constituent members constituting the sanitary napkin 10 is not limited to the materials described in the present specification, and various known materials generally used in the field of the present invention are not limited. In addition, the terms "first" and "second" used in the specification and the claims are used to distinguish the same elements, positions, and the like.

10‧‧‧Physical sanitary napkins (corporeal fluid absorbent articles)

11‧‧‧Top sheet

12‧‧‧ Back sheet

13‧‧‧ core material

15‧‧‧Intermediate domain (excretion port abutment domain)

16‧‧‧1st area

17‧‧‧2nd area

19a, 19b‧‧‧ high pressure section

20‧‧‧Pressing trench pattern

21‧‧‧1st functional department

22‧‧‧First Decoration Department

23‧‧‧2nd Decoration Department

24‧‧‧2nd Function Department

51‧‧‧Decorative crushing domain

K1~K5‧‧‧Wire area

P‧‧‧ vertical axis

Q‧‧‧ horizontal axis

S1~S4‧‧‧The area of the test strip groove in each line pressure area

T1~T4‧‧‧Wire area

Fig. 1 is a plan view showing a surface side of a sanitary napkin according to a first embodiment of the present invention, which is an example of a body fluid absorbent article.

Fig. 2 is a plan view of the inner side of the sanitary napkin.

Fig. 3 is a cross-sectional view taken along line III-III of Fig. 1 .

Fig. 4 is a plan view of an absorbent structure.

FIG. 5 is an enlarged view of a region circled by a one-dot chain line V of FIG. 4. FIG.

Fig. 6 is a schematic view showing a part of a manufacturing process of a sanitary napkin.

[Fig. 7] A partially enlarged view of the embossing roll.

Fig. 8 is a partially enlarged view of an absorbent structure in the manufacturing process of sanitary napkin.

Fig. 9 is an enlarged view similar to Fig. 5 in the second embodiment.

[Fig. 10] (a) to (c) are partial enlarged views similar to Fig. 8 in the third embodiment.

45‧‧‧Absorbing structures

11‧‧‧Top sheet

13‧‧‧ core material

S3a‧‧‧ area

S1‧‧‧1st area

21a‧‧‧ outer edge

S3b‧‧‧ area

21‧‧‧1st functional department

S3c‧‧‧ area

W3‧‧‧ size

T1‧‧‧Wire area

T3‧‧‧Wire area

T4‧‧‧Wire area

T2‧‧‧Wire area

S4a‧‧‧ area

S4b‧‧‧ area

S4c‧‧‧ area

S4d‧‧‧ area

S4e‧‧‧ area

22‧‧‧First Decoration Department

23‧‧‧2nd Decoration Department

S2a‧‧‧ area

S2b‧‧‧ area

51‧‧‧Decorative crushing domain

S2c‧‧‧ area

24‧‧‧2nd Function Department

Claims (10)

A body fluid absorbent article comprising a vertical axis and a horizontal axis, and comprising: an absorbent structure having a skin facing surface and a non-skin opposing surface, and a liquid-absorbent core material; and forming in the presence region of the core material A body fluid absorbent article which is a press-groove pattern having a concave shape from the opposite surface of the skin toward the non-skin opposing surface, wherein the press-groove pattern has an annular shape extending in a direction of the longitudinal axis. a first functional portion; and a decorative portion positioned in the first functional portion, wherein a part of the first functional portion and the decorative portion are arranged in a decorative press region, and are linearly pressed along the wide direction during manufacture. The first function is formed such that the area of the decorative pressing region per unit width in the direction of the longitudinal axis of the wide area is smaller than the area of the outer edge of the first functional portion per unit width. Department and the aforementioned decoration department. The body fluid absorbent article according to claim 1, wherein the second functional portion of the predetermined shape is between the decorative portion in the first functional portion and the horizontal axis. The body fluid absorbent article according to claim 1 or 2, wherein the absorbent structure has a discharge port abutting against a drain opening of a wearer; and a contact at the drain port The first region outside the direction of the vertical axis of the domain and the second region located on the opposite side, the decorative portion is formed in at least the first region among the first region and the second region. Body fluid absorption as described in item 1 or 2 of the patent application scope In the article, at least the decorative portion among the press-groove patterns is formed with a plurality of high-pressure press portions. The body fluid absorbent article according to the first or second aspect of the invention, wherein the wide portion of the decorative portion is smaller than a width of the second functional portion. The body fluid absorbent article according to the first aspect of the invention, wherein the decorative portion has first and second decorative portions, and the first and second decorative portions are inclined with respect to the longitudinal axis. The body fluid absorbent article according to claim 6, wherein the first decorative portion and the second decorative portion are displaced relative to each other in a direction of the longitudinal axis. The body fluid absorbent article according to claim 2, wherein the decorative portion is formed in the first and second regions, and the decorative portions formed in the first and second regions are mutually opposed to the horizontal axis and The aforementioned longitudinal axis forms an asymmetry. The body fluid absorbent article according to the first aspect of the invention, wherein the absorbent structure comprises: a liquid-permeable top sheet located on the opposite side of the skin; and the non-skin orientation a liquid-impermeable back sheet on the front side; and the core material interposed between the top sheet and the back sheet. A method for producing a body fluid absorbent article according to the first aspect of the invention, wherein the absorbent body comprising the top sheet and the body fluid absorbent core is formed in the method of producing the body fluid absorbent article. When the direction of the horizontal axis is parallel to the mechanical direction, The absorbing structure is transported by the transport means, and is provided with a pressure roller having a constant force against the absorbing structure body at a position above the transport means; and is disposed opposite to the pressure roller, and An embossing process consisting of an embossing roll for forming an embossing pattern for the press-groove pattern on the surface of the absorbent structure, and pressing the absorbent structure to press the core of the absorbent structure The existing area forms the aforementioned squeeze groove pattern.