JP6952016B2 - Absorbent article - Google Patents

Description

The present invention relates to an absorbent article comprising an absorber having a squeezed portion.

Absorbent articles such as disposable diapers have absorbers that absorb liquids such as urine. In the absorbent article described in Patent Document 1, a grid-like pressing groove is formed in the absorbent body. It is said that by forming a squeeze groove in the absorber, its flexural rigidity is increased and the shape retention of the absorber is maintained.

JP-A-2018-47189

The rigidity of the absorber is increased by the squeezing part (embossing). Therefore, when a grid-like squeezed portion is formed on the absorber, the shape retention of the absorber is likely to be maintained. However, on the other hand, the rigidity of the absorber may be increased and the touch may be reduced.

Therefore, an absorbent article capable of improving the touch while suppressing the shape loss of the absorber by the squeezed portion is desired.

The absorbent article according to one aspect has an absorber and a squeezed portion obtained by squeezing the absorber. The absorber has an absorbing core and a core wrap that encloses the absorbing core. The squeezed portion is formed in a grid pattern on the absorber. In the area of the squeezed portion, at least a part of the core wrap on the non-skin surface side of the absorption core is joined to the absorption core. In the area of the squeezed portion, at least a part of the core wrap on the skin surface side of the absorption core is not joined to the absorption core.

It is a top view of the absorbent article seen from the skin surface side which concerns on 1st Embodiment. It is a top view of the absorbent article seen from the non-skin surface side which concerns on 1st Embodiment. It is a top view of the absorber which concerns on 1st Embodiment. It is a schematic cross-sectional view of the absorbent article along line 4A-4A of FIG. It is a figure which shows the pattern of the squeezing part of the absorber which concerns on 2nd Embodiment. It is a figure which shows the pattern of the squeezing part of the absorber which concerns on 3rd Embodiment.

(1) Outline of Embodiment At least the following matters will be clarified by the description of this specification and the accompanying drawings.

The absorbent article according to one aspect has an absorber and a squeezed portion that squeezes the absorber, and the absorber has an absorbing core and a core wrap that wraps the absorbing core, and the squeezing. The portions are formed in a grid pattern on the absorbent body, and in the region of the squeezed portion, at least a part of the core wrap on the non-skin surface side of the absorbing core is joined to the absorbing core, and the squeezing portion is formed. In the area of the portion, at least a part of the core wrap on the skin surface side of the absorption core is not joined to the absorption core.

Since the lattice-shaped squeezed portion is formed on the absorber, the bending rigidity of the absorber is increased, and the shape retention of the absorber is easily maintained. In particular, in the area of the squeezed portion, at least a part of the core wrap on the non-skin surface side of the absorbent core is joined to the absorbent core. Such a grid-like squeezed portion makes it easy to maintain the shape retention of the absorber and suppresses the shape loss of the absorber.

On the other hand, in the area of the squeezed portion, at least a part of the core wrap on the skin surface side of the absorbing core is not joined to the absorbing core. Therefore, the core wrap on the skin surface side rises from the squeezed portion, and the unevenness due to the squeezed portion on the skin surface side is less likely to be felt, so that the touch can be improved.

According to a preferred embodiment, the squeezed portion is formed on the skin surface side and the non-skin surface side of the absorber, and the depth of the squeezed portion formed on the skin surface side of the absorber is the said. It is larger than the depth of the squeezed portion formed on the non-skin surface side of the absorber.

When forming the squeezed part in the absorber, the core wrap on the skin surface side is deeply stretched, so that the force to return to the original state is easy to work. As a result, the core wrap on the skin surface side tends to be non-bonded to the absorbing core. Therefore, since the core wrap on the skin surface side easily returns to the surface sheet side, the core wrap on the skin surface side rises from the squeezed portion, and it becomes difficult to feel the unevenness due to the squeezed portion on the skin surface side, and the touch can be further improved.

On the other hand, the core wrap on the non-skin surface side is not stretched so much when forming the pressed portion on the absorbent body, so that it is easy to maintain the state of being joined to the absorbent core.

According to a preferred embodiment, the elongation of the core wrap on the skin surface side of the absorption core is smaller than the elongation of the core wrap on the non-skin surface side of the absorption core.

Since the elongation of the core wrap on the skin surface side is smaller than the elongation of the core wrap on the non-skin surface side of the absorption core, the core wrap on the skin surface side can easily return to the original state even if it is stretched once. That is, when the squeezed portion is formed on the absorbent body, the core wrap on the skin surface side tends to return to the original state after the absorbent core and the core wrap are pressed in the thickness direction. As a result, the core wrap on the skin surface side tends to be non-bonded to the absorption core, and the core wrap on the skin surface side tends to lift from the pressed portion of the absorption core. Therefore, the unevenness due to the pressed portion on the skin surface side is less likely to be felt, and the skin feel can be further improved.

On the other hand, since the core wrap on the non-skin surface side has a relatively high elongation, it is easily deformed together with the absorbing core when forming a squeezed portion on the absorbent body, and the state of being joined to the absorbing core is easily maintained.

According to a preferred embodiment, an adhesive is provided between the absorbent core and the core wrap, and the adhesive is weighed on the skin surface side of the absorbent core to the non-skin surface side of the absorbent core. Smaller than the adhesive weighed.

Since the amount of the adhesive that can adhere to the core wrap on the skin surface side is small, the core wrap on the skin surface side tends to be non-bonded to the absorbing core, and the absorber is less likely to become hard on the skin surface side. Therefore, the feel of the absorber can be further improved.

On the other hand, since the core wrap on the non-skin surface side and the absorbent core are firmly bonded with a large weighing adhesive, the shape retention of the absorbent body is easily maintained.

According to a preferred embodiment, in a cell of the absorber surrounded by the grid-like squeezed portions, the ratio of the maximum thickness of the absorption core to the maximum length of the cell is 0.09 or more.

The greater the ratio of the maximum thickness of the absorption core to the maximum length of the cell, the greater the bulge of the absorption core relative to the size of the cell. When the ratio is 0.09 or more, the grid-like pressed portion is firmly formed, and the shape retention of the absorber can be easily maintained.

According to a preferred embodiment, in a cell of the absorber surrounded by the grid-like squeezed portions, the ratio of the maximum thickness of the absorbing core to the maximum length of the cell is 0.16 or less.

When the ratio is 0.16 or less, the absorption core of the cell does not bulge too much, so that it is possible to prevent the core wrap on the non-skin surface side from coming off from the absorption core. As a result, the core wrap on the non-skin surface side is firmly bonded to the absorbent core, so that the effect of suppressing the shape of the absorbent body is enhanced.

According to a preferred embodiment, the non-junction region between the core wrap and the absorption core on the skin surface side of the absorption core is larger than the non-junction region between the core wrap and the absorption core on the non-skin surface side of the absorption core. big.

Since the non-bonding region between the core wrap on the non-skin surface side of the absorption core and the absorption core is small, that is, the bonding region is large, the core wrap on the non-skin surface side and the absorption core are firmly bonded. Therefore, the shape retention of the absorber is likely to be maintained.

On the other hand, since the non-bonding region between the core wrap on the skin surface side of the absorption core and the absorption core is large, the core wrap and the surface sheet on the skin surface side are lifted from the squeezed portion, and the unevenness due to the squeezed portion on the skin surface side is less likely to be felt. , The touch can be further improved.

According to a preferred embodiment, the squeezed portion is formed on the skin surface side and the non-skin surface side of the absorber, and in the region of the squeezed portion, the core wrap and the absorption on the skin surface side of the absorption core. At least a part of the non-bonded region where the core is not bonded is provided so as to face the bonded region where the core wrap on the non-skin surface side of the absorption core and the absorption core are bonded.

As a result, the pressed portion is firmly formed on the non-skin surface side of the absorber, and the non-bonded region where the core wrap and the absorption core are not bonded is formed on the skin surface side of the absorber, so that the surface sheet can be formed. , It rises from the squeezed part and it becomes difficult to feel the unevenness due to the squeezed part on the skin surface side, so that the touch can be improved.

According to a preferred embodiment, the squeezed portion is formed on the skin surface side and the non-skin surface side of the absorber, has a back surface sheet located on the non-skin surface side of the absorber, and has a non-skin surface. In the area of the squeezed portion on the side, at least a part of the back surface sheet on the non-skin surface side of the absorption core is joined to the core wrap.

On the non-skin surface side of the absorber, the back sheet is joined to the core wrap in the area of the pressed portion, so that the grid-like pressed portion is firmly formed on the non-skin surface side. As a result, the shape retention of the absorber is more easily maintained, and the shape loss of the absorber is further suppressed.

According to a preferred embodiment, the squeezed portion is formed on the skin surface side and the non-skin surface side of the absorber, and an indicator for determining the presence or absence of urine adhesion is provided on the non-skin surface side of the absorber. At least a part of the indicator is provided in close contact with the squeezed portion on the non-skin surface side.

The indicator can inform the user of the presence or absence of urine adhesion by, for example, discoloring due to urine adhesion. Here, since at least a part of the indicator is provided in close contact with the squeezed portion on the non-skin surface side, the indicator is likely to react to urine absorbed by the absorber. This allows the user to easily determine the absorption of urine into the absorber.

(2) First Embodiment Hereinafter, the embodiment will be described with reference to the drawings. In the drawings below, the same or similar parts are designated by the same or similar reference numerals. However, it should be noted that the drawings are schematic and the ratio of each dimension may differ from the actual one.

FIG. 1 is a plan view of the absorbent article as seen from the skin surface side according to the first embodiment. FIG. 2 is a plan view of the absorbent article as seen from the non-skin surface side according to the first embodiment. FIG. 3 is a plan view of the absorber according to the first embodiment. FIG. 4 is a schematic cross-sectional view of the absorbent article along line 4A-4A of FIG.

The absorbent article 10 may be an article such as a disposable diaper or a sanitary napkin. Hereinafter, the absorbent article 10 will be described in detail by taking as an example.

The absorbent article 10 has an anterior region S1, an inseam region S2, and a posterior region S3. The anterior region S1 is a portion in contact with the wearer's front torso circumference (abdominal portion). Further, the rear side region S3 is a portion in contact with the wearer's rear torso peripheral portion (back portion). The inseam area S2 is located between the anterior side area S1 and the anterior side area S3.

In the present embodiment, the direction from the front side region S1 to the rear side region S3 is referred to as the front-rear direction L. Further, the direction orthogonal to the front-rear direction L is called the width direction W.

The absorbent article 10 may have a front surface sheet 50, an absorbent body 40, and back surface sheets 60 and 62. The surface sheet 50 may be composed of one or a plurality of sheets. The surface sheet 50 may be composed of a liquid-permeable sheet such as a non-woven fabric.

The back surface sheets 60 and 62 may be composed of one or a plurality of sheets. In the present embodiment, the back surface sheet has a leak-proof sheet 62 located on the non-skin surface side of the absorber 40 and a non-skin surface sheet 60 located on the non-skin surface side of the leak-proof sheet 62. good. The leak-proof sheet 62 may be made of, for example, a liquid-impermeable film. The non-skin surface sheet 60 may be made of, for example, a non-woven fabric.

The absorbent article 10 may have side sheets 70 extending outward in the width direction W from both outer edges of the absorber 40 in the width direction W. The side sheet 70 may be provided on the skin surface side of the absorber 40 at a position where it overlaps with the absorber 40.

In this embodiment, the absorbent article 10 includes a pair of fastening tapes 90. The fastening tape 90 is provided in the rear side region S3. The fastening tape 90 anchors the front side region S1 and the rear side region S0. The fastening tape 90 holds the absorbent article 10 on the wearer's body by anchoring the anterior region S1 and the posterior region S3 to each other.

Instead of the above embodiment, the absorbent article 10 may not include a pair of fastening tapes 90. In this case, for example, the absorbent article may have a pants-shaped shape. Further, the absorbent article may be of a type used by being attached to underwear.

The absorber 40 is provided between the surface sheet 50 and the leak-proof sheet 62. The absorber 40 may have an absorption core 40a and a core wrap 40b that encloses the absorption core 40a.

The absorption core 40a is provided at least in the inseam region S2, and preferably extends from the inseam region S2 toward at least one of the anterior region S1 and the posterior region S3. The absorption core 40a can be constructed using a material such as crushed pulp or a highly absorbent polymer.

The core wrap 40b is composed of a liquid permeable sheet. The core wrap 40b may be made of, for example, a tissue or a non-woven fabric. The core wrap 40b on the skin surface side of the absorption core 40a and the core wrap 40b on the non-skin surface side of the absorption core 40a may be formed of different sheets or may be formed of the same sheet.

The core wrap 40b on the skin surface side of the absorption core 40a may be adhered to the absorption core 40a by the adhesive 30a. Further, the core wrap 40b on the non-skin surface side of the absorption core 40a may be adhered to the absorption core 40a by the adhesive 30b.

The absorbent article 10 may have an indicator 68 for determining the presence or absence of urine adhesion. The indicator 68 may be provided on the non-skin surface side of the absorber 40. For example, the indicator 68 is provided on the skin surface side of the leak-proof sheet 62. In this embodiment, the indicator 68 extends along the anterior-posterior direction L, at least in the inseam region S3. The indicator 68 may be composed of, for example, a member whose color changes due to the adhesion of urine. The indicator 68 is discolored by the adhesion of urine, so that the user can be notified of the presence or absence of the adhesion of urine.

It is preferable that at least a part of the indicator 68 is provided in close contact with the non-skin surface side pressing portion 80b described later. More preferably, the indicator 68 is adhered to the core wrap 40b at the non-skin surface side pressed portion 80b by an adhesive. Since at least a part of the indicator 68 is provided in close contact with the non-skin surface side pressing portion 80b described later, the indicator 68 easily reacts to the urine absorbed by the absorber 40. This allows the user to easily determine the absorption of urine into the absorber.

The absorbent article 10 has a squeezed portion 80 that squeezes the absorber 40. The pressing portion 80 is formed in the absorption core 40a and the core wrap 40b. The squeezed portion 80 may include a skin surface side squeezed portion 80a formed on the skin surface side of the absorber 40 and a non- skin surface side squeezed portion 80b formed on the non-skin surface side of the absorber 40. .. The skin surface side pressing portion 80a is a portion of the absorber 40 that is recessed in the thickness direction from the skin surface side toward the non-skin surface side. The non-skin surface side pressing portion 80b is a portion of the absorber 40 recessed in the thickness direction from the non-skin surface side toward the skin surface side. Here, the skin surface side pressing portion 80a is provided at a position overlapping the non-skin surface side pressing portion 80b in the thickness direction T of the absorber 40.

The squeezed portion 80 is formed in a grid pattern on the absorber 40. That is, the absorber 40 may be partitioned into one or more cells 46 by the squeezing section 80. The shape of the lattice is not particularly limited. For example, the squeezing portion 80 may be formed so that each cell 46 has a polygonal shape such as a substantially rhombus, a substantially rectangular shape, a substantially regular quadrangle, or a substantially triangular shape. Instead, the squeezing section 80 may be provided to form one substantially square or approximately rectangular cell 46.

The squeezed portion 80 may be provided at least in the inseam region S2, and is preferably formed in a grid pattern in the entire region of the absorber. Here, each cell 46 does not have to be completely separated from another cell 46. For example, as shown in FIG. 3, cells 46 adjacent to each other in the front-rear direction L may be connected to each other via a narrow non-squeezed portion. Instead of the embodiment shown in FIG. 3, cells 46 adjacent to each other in the width direction W may be connected to each other via a narrow non-squeezed portion. As described above, the squeezed portion 80 may be formed in a substantially lattice pattern, and the cells 46 may not be completely separated from each other.

In the present embodiment, a plurality of squeezed portions 80 extending along the front-rear direction L are arranged in the width direction W. Each squeezed portion 80 extends along the front-rear direction L while curving in a wavy shape. The phases of the waves of the pressing portions 80 adjacent to each other are 180 ° out of phase. As a result, a plurality of cells 46 are formed between the pressing portions 80 adjacent to each other.

In the region of the squeezed portion 80, at least a part of the core wrap 40b on the non-skin surface side of the absorption core 40a is joined to the absorption core 40a, and in the region of the squeeze portion 80, the core wrap 40b on the skin surface side of the absorption core 40a. At least a part of the above is not joined to the absorption core 40a. Preferably, in the region of the squeezed portion 80, at least a part of the non-bonded region where the skin surface side core wrap 40b of the absorption core 40a and the absorption core 40a are not bonded is the non-skin surface side core wrap 40b of the absorption core 40a. And the absorption core 40a are provided so as to face the joint region to which they are joined.

Since the lattice-shaped pressing portion 80 is formed on the absorber 40, the bending rigidity of the absorber 40 is increased, and the shape retention of the absorber 40 is likely to be maintained. In particular, in the region of the squeezed portion 80, at least a part of the core wrap 40b on the non-skin surface side of the absorption core 40a is joined to the absorption core 40a. Such a grid-like squeezed portion 80 makes it easier to maintain the shape retention of the absorber 40 and suppresses the shape loss of the absorber 40. On the other hand, in the region of the squeezed portion 80, at least a part of the core wrap 40b on the skin surface side of the absorption core 40a is not joined to the absorption core 40a. Therefore, the core wrap 40b and the surface sheet 50 on the skin surface side are lifted from the squeezed portion 80, and the unevenness due to the squeezed portion 80 on the skin surface side is less likely to be felt, so that the touch can be improved.

The non-bonding region between the core wrap 40b on the skin surface side of the absorption core 40a and the absorption core 40a is preferably larger than the non-bonding region between the core wrap 40b on the non-skin surface side of the absorption core 40a and the absorption core 40a. Since the non-bonding region between the non-skin surface side core wrap 40b and the absorption core 40a of the absorption core 40a is small, that is, the bonding region is large, the non-skin surface side core wrap 40b and the absorption core 40a are firmly bonded. Therefore, the shape retention of the absorber is likely to be maintained. On the other hand, since the non-bonding region between the core wrap 40b on the skin surface side of the absorption core 40a and the absorption core 40a is large, the core wrap 40b and the surface sheet 50 on the skin surface side are easily lifted from the squeezed portion 80 and are on the skin surface side. Since the unevenness caused by the squeezed portion 80 is less likely to be felt, the feel of the skin can be further improved.

The depth of the skin-side squeezed portion 80a is preferably larger than the depth of the non-skin-side squeezed portion 80b. When the squeezed portion 80 is formed on the absorber 40, the core wrap 40b on the skin surface side is deeply stretched, so that a force for returning to the original state is likely to work. As a result, the core wrap 40b on the skin surface side tends to be non-bonded to the absorption core 40a. Therefore, since the core wrap 40b on the skin surface side tends to return to the surface sheet 50 side, it becomes easier to lift from the squeezed portion 80 and the unevenness due to the squeezed portion 80 on the skin surface side is less likely to be felt. On the other hand, the core wrap 40b on the non-skin surface side is not stretched so much when the squeezed portion 80 is formed on the absorbent body 40, so that it is easy to maintain the state of being joined to the absorbent core 40a.

It is more preferable that the elongation of the core wrap 40b on the skin surface side of the absorption core 40a is smaller than the elongation of the core wrap 40b on the non-skin surface side of the absorption core 40a. Since the elongation of the core wrap 40b on the skin surface side is smaller than the elongation of the core wrap 40b on the non-skin surface side of the absorption core 40a, the core wrap 40b on the skin surface side tends to return to the original state even if it is stretched once. That is, when the pressing portion 80 is formed on the absorbent body 40, the core wrap 40b on the skin surface side tends to return to the original state after the absorbing core 40b and the core wrap 40b are pressed in the thickness direction. As a result, the core wrap 40b on the skin surface side tends to be non-bonded to the absorption core 40a. Further, since the core wrap 40b on the skin surface side tends to return to the surface sheet 50 side, it becomes easier to lift from the squeezed portion 80 and the unevenness due to the squeezed portion 80 on the skin surface side is less likely to be felt. On the other hand, since the core wrap 40b on the non-skin surface side has a relatively high elongation, it deforms together with the absorption core 40a when forming the squeezed portion 80 on the absorber 40, and maintains a state of being joined to the absorption core 40a. easy.

Here, the elongation of the core wrap 40b can be measured by the following method. First, the core wrap 40 is cut out from the absorbent article 10 and used as a measurement sample. The sample for measurement may be a strip-shaped test piece having a length of 150 mm and a width of 25 mm. Using a tensile tester (manufactured by Shimadzu Corporation, Autograph, model AGS-1kNG) equipped with a load cell having a maximum load capacity of 50 N, this measurement sample was subjected to 100 mm for three measurement samples. The tensile elongation is measured under the conditions of the distance between the chucks and the tensile speed of 100 mm / min. The average value of the tensile elongations of the three measurement samples is defined as the tensile elongation.

It is preferable that the weighing 30a of the adhesive on the skin surface side of the absorption core 40a is smaller than the weighing of the adhesive on the non-skin surface side of the absorption core 40a. Since the amount of the adhesive that can adhere to the core wrap 40b on the skin surface side is small, the core wrap 40b on the skin surface side tends to be non-bonded to the absorption core 40a, and the absorber 40 is less likely to become hard on the skin surface side. Therefore, the feel of the absorber 40 can be further improved. On the other hand, since the core wrap 40b on the non-skin surface side and the absorption core 40a are firmly bonded with a large weighing adhesive 30b, the shape retention of the absorber 40 is likely to be maintained. The basis weight of the adhesive is calculated by dividing the coating amount (mass) of the adhesive applied to the predetermined area of the absorption core 40a or the core wrap 40b by the predetermined area. For example, the basis weight of the adhesive may be defined by a value obtained by dividing the total weight of the adhesive applied to the entire absorption core 40a or the core wrap 40b by the area of the absorption core 40a or the core wrap 40b.

In the region of the non-skin surface side pressing portion 80b, it is preferable that at least a part of the back surface sheets 60 and 62 on the non-skin surface side of the absorption core 40b is joined to the core wrap 40b. Since the back surface sheets 60 and 62 are joined to the core wrap 40b in the region of the squeezed portion 80 on the non-skin surface side of the absorber 40, the grid-like squeezed portion 80 is firmly formed on the non-skin surface side. As a result, the shape-retaining property of the absorber 40 is more easily maintained, and the shape loss of the absorber 40 is further suppressed.

More preferably, at least a part of the leak-proof sheet 62 is joined to the core wrap 40b in the region of the non-skin surface side squeezed portion 80b. The leak-proof sheet 62 may be made of a sheet having a higher rigidity than a non-woven fabric, such as a liquid-impermeable film. In this case, the shape of the non-skin surface side squeezed portion 80b is firmly maintained on the non-skin surface side of the absorber 40. This makes it easier to maintain the shape retention of the absorber 40.

The surface sheet 50 does not have to be joined to the core wrap 40b, at least in the area of the squeezed portion 80. In this case, since the surface sheet 50 is easily lifted from the absorption core 40a, it is difficult to feel the unevenness due to the squeezed portion 80 on the skin surface side, so that the touch can be further improved.

In the cell 46 surrounded by the grid-like squeezed portion 80 of the absorber 40, the ratio of the maximum thickness of the absorption core 40a to the maximum length of the cell 46 is preferably 0.09 or more. The larger the ratio of the maximum thickness of the absorption core 40a to the maximum length of the cell 46, the larger the bulge of the absorption core 40a with respect to the size of the cell 46. When the ratio is 0.09 or more, the grid-like squeezed portion 80 is firmly formed, and the shape retention of the absorber 40 is easily maintained. The thickness of the intake Osamuko A 40a may be measured, for example, by an absorber by cutting the absorber in a cutting machine in a state of solidifying in liquid nitrogen, to observe the cut section of the absorbent body in an electron microscope can.

In the cell of the absorber 40 surrounded by the grid-like squeezed portion 80, the ratio of the maximum thickness of the absorption core 40a to the maximum length of the cell 46 is preferably 0.16 or less. The ratio of the maximum thickness of the absorption core 40a to the maximum length of the cell 46 in the width direction W is preferably 0.16 or less, more preferably 0.15 or less. When the ratio is 0.16 or less, the absorption core 40a of the cell 46 does not bulge too much, so that it is possible to prevent the core wrap 40b on the non-skin surface side from coming off from the absorption core 40a. As a result, the core wrap 40b on the non-skin surface side is firmly bonded to the absorption core 40a, so that the effect of suppressing the shape loss of the absorber 40 is enhanced.

Table 1 below shows the size of the cell 46 partitioned by the pressing portion 80 and the measurement results of the bondability between the core wrap 40b and the absorbing core 40a at the non-skin surface side pressing portion 80b. Examples 1 to 5 shown in Table 1 differ in the size and thickness of the cells 46 formed by the pressing portion 80. In Examples 1 to 5, the maximum length W1 in the width direction of the cell 46 and the maximum thickness T1 of the cell 46 are shown in Table 1.

Further, at the non-skin surface side pressing portion 80b, the bondability between the core wrap 40b on the non-skin surface side and the absorption core 40a was confirmed by an electron microscope. When the core wrap 40b on the non-skin surface side and the absorption core 40a are joined, the evaluation of the bondability is indicated by "◯". On the other hand, when the bondability between the core wrap 40b on the non-skin surface side and the absorption core 40a is deteriorated, that is, when a non-bonding region is observed, the evaluation of the bondability is indicated by "x".

As shown in Table 1 above, the smaller the ratio of the maximum thickness T1 of the absorption core to the maximum length W1 in the width direction W of the cell 46, the more firmly the core wrap 40b on the non-skin surface side and the absorption core 40a are joined. You can see that. Specifically, the ratio of the maximum thickness T1 of the absorption core to the maximum length W1 in the width direction W of the cell 46 is preferably 0.16 or less, more preferably 0.15 or less, still more preferably 0.14 or less. You can.

Further, Table 1 also shows the results of evaluating the visibility of the grid-like squeezed portion 80 in each example. Visibility was measured by sensory evaluation by multiple users. “○” in Table 1 is a case where all of the plurality of users can recognize the squeezing line EL of the absorber 40 through the surface sheet 50 when viewed from the skin surface side, and the result is that the visibility is high. Is shown. “X” in Table 1 indicates that some of the plurality of users could not recognize the squeezing line EL of the absorber 40 through the surface sheet 50 when viewed from the skin surface side, and it was determined that the visibility was low. The result is shown. From Table 1, the ratio of the maximum thickness T1 of the absorption core 40a to the maximum length W1 in the width direction of the cell 46 is preferably 0.09 or more, more preferably 0.10 or more.

(3) Second Embodiment Next, the absorbent article according to the second embodiment will be described. Hereinafter, the description of the configuration similar to that of the first embodiment may be omitted. In the second embodiment, the pattern of the squeezed portion 80 formed on the absorber 40 is different from that in the first embodiment.

FIG. 5 is a diagram showing a pattern of a squeezed portion of the absorber according to the second embodiment. Some of the squeezed portions 80 are inclined with respect to the other squeezed portions of the plurality of squeezing lines so as to form a grid. In this embodiment, each squeezed portion 80 is intermittently formed by an intermittent portion 86. In this way, the squeezing portion 80 may extend intermittently so as to draw a broken line.

Instead, the squeezing section 80 may extend continuously in one direction. In this case, the squeezing portion 80 is formed so as to divide the absorber into a large number of substantially square compartments.

(4) Third Embodiment Next, the absorbent article according to the third embodiment will be described. Hereinafter, the description of the configuration similar to that of the first embodiment may be omitted. In the third embodiment, the pattern of the squeezed portion 80 formed on the absorber 40 is different from that of the first embodiment.

FIG. 6 is a diagram showing a pattern of a squeezed portion of an absorber according to a third embodiment. Some of the squeezed portions 80 are inclined with respect to the other squeezed portions of the plurality of squeezed portions 80 so as to form a grid. Each pressing portion 80 extends in one direction while being curved in a wavy shape.

It should be noted that the pattern of the squeezing portion 80 can be variously changed as described in the first to third embodiments.

As mentioned above, although the content of the invention has been disclosed through embodiments, the statements and drawings that form part of this disclosure should not be understood to limit the invention. This disclosure reveals to those skilled in the art various alternative embodiments, examples and operational techniques. Therefore, the technical scope of the present invention is defined only by the matters specifying the invention relating to the reasonable claims from the above description.

According to the above aspect, it is possible to provide an absorbent article capable of improving the touch while suppressing the shape loss of the absorber by the squeezed portion.

10 Absorbent article 40 Absorbent 40a Absorbent core 40b Core wrap 50 Surface sheet 60 Leakage-proof sheet 62 Non-skin sheet 80 Squeezed part 80a Skin side squeezed part 80b Non-skin side squeezed part

Claims (9)

Absorber and
It has a squeezed portion that squeezes the absorber, and
The absorber has an absorbing core and a core wrap that wraps the absorbing core.
The squeezed portion is formed in a grid pattern on the absorber.
In the area of the squeezed portion, at least a part of the core wrap on the non-skin surface side of the absorption core is joined to the absorption core.
In the area of the squeezed portion, at least a part of the core wrap on the skin surface side of the absorption core is not joined to the absorption core.
The core wrap on the non-skin surface side of the absorption core and the core wrap on the skin surface side of the absorption core are made of the same sheet .
An absorbent article in which the elongation of the core wrap on the skin surface side of the absorption core is smaller than the elongation of the core wrap on the non-skin surface side of the absorption core. Absorber and
It has a squeezed portion that squeezes the absorber, and
The absorber has an absorbing core and a core wrap that wraps the absorbing core.
The squeezed portion is formed in a grid pattern on the absorber.
In the area of the squeezed portion, at least a part of the core wrap on the non-skin surface side of the absorption core is joined to the absorption core.
In the area of the squeezed portion, at least a part of the core wrap on the skin surface side of the absorption core is not joined to the absorption core.
The core wrap on the non-skin surface side of the absorption core and the core wrap on the skin surface side of the absorption core are made of the same sheet .
An adhesive is provided between the absorbent core and the core wrap.
An absorbent article in which the weighing of the adhesive on the skin surface side of the absorbing core is smaller than the weighing of the adhesive on the non-skin surface side of the absorbing core. Absorber and
It has a squeezed portion that squeezes the absorber, and
The absorber has an absorbing core and a core wrap that wraps the absorbing core.
The squeezed portion is formed in a grid pattern on the absorber.
In the area of the squeezed portion, at least a part of the core wrap on the non-skin surface side of the absorption core is joined to the absorption core.
In the area of the squeezed portion, at least a part of the core wrap on the skin surface side of the absorption core is not joined to the absorption core.
The core wrap on the non-skin surface side of the absorption core and the core wrap on the skin surface side of the absorption core are made of the same sheet .
The squeezed portion is formed on the skin surface side and the non-skin surface side of the absorber.
In the region of the squeezed portion, at least a part of the non-bonded region where the core wrap on the skin surface side of the absorption core and the absorption core are not bonded is the core wrap on the non-skin surface side of the absorption core and the absorption. An absorbent article provided facing the bonding region to which the core is bonded. The squeezed portion is formed on the skin surface side and the non-skin surface side of the absorber.
Any one of claims 1 to 3 , wherein the depth of the squeezed portion formed on the skin surface side of the absorber is larger than the depth of the squeezed portion formed on the non-skin surface side of the absorber. Absorbent article described in. Any one of claims 1 to 4, wherein the ratio of the maximum thickness of the absorption core to the maximum length of the cell in the cell surrounded by the grid-like squeezed portion of the absorber is 0.09 or more. Absorbent articles described in the section. Any one of claims 1 to 5, wherein in a cell of the absorber surrounded by the grid-like squeezed portion, the ratio of the maximum thickness of the absorption core to the maximum length of the cell is 0.16 or less. Absorbent articles described in the section. Claims 1 to 6 that the non-junction region between the core wrap on the skin surface side of the absorption core and the absorption core is larger than the non-junction region between the core wrap and the absorption core on the non-skin surface side of the absorption core. The absorbent article according to any one of the above. The squeezed portion is formed on the skin surface side and the non-skin surface side of the absorber.
It has a back sheet located on the non-skin surface side of the absorber and has a back sheet.
7. Absorbent article. The squeezed portion is formed on the skin surface side and the non-skin surface side of the absorber.
An indicator for determining the presence or absence of urine adhesion is provided on the non-skin surface side of the absorber.
The absorbent article according to any one of claims 1 to 8 , wherein at least a part of the indicator is provided in close contact with the squeezed portion on the non-skin surface side.

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