JPH08107910A - Absorbent article - Google Patents

Abstract

PURPOSE: To surely prevent the lateral leakage of an absorbent article for which an absorbent high-polymer material is used by increasing the absorption rate of the body fluid of this article, thereby effecting gelatinization of a large volume of the body fluid. CONSTITUTION: One absorptive layer 13 and another absorptive layer 14 consisting of pulp base stock are laminated between a leakproof sheet 10 and a front surface sheet 11. The absorbent high-polymer materials 15, 17 are arranged within the one absorptive layer 13 and within the other absorptive layer 14. Arrangement of the absorbent high-polymer materials 15, 17 is executed by arranging these materials in a parallel stripe form via spacings 16, 22 for permeation of the body fluid and arranging the other absorbent high-polymer materials 17 so as to face the spacings 16 for permeation of the one absorbent high-polymer materials 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorbent article such as a disposable diaper and a sanitary napkin using an absorbent polymer substance, which is intended to obtain a thin product having excellent absorption performance. To do.

[0002]

2. Description of the Related Art Conventionally, absorbent articles such as disposable diapers and sanitary napkins have a body fluid absorbent absorbent layer body interposed between a leak-proof sheet and a surface sheet. In addition, the absorbent layer body is provided with an absorbent polymer substance. This absorptive polymer substance has the advantage that the contacted body fluid can be gelled while expanding the volume, and a large amount of body fluid can be gelled.

Conventionally, there is a method of arranging the absorptive polymer substance (1) widely laid between the absorptive layers (2) and (3) as shown in FIG. To do.

In another different conventional example, the absorbent polymer substance (1) is laid in parallel stripes between the absorbent layers (2) and (3) as shown in FIG. It is known that a small gap (4) is provided between the substances (1).

[0005]

However, in any of the above-mentioned methods, the absorption rate of body fluid is slow, which causes leakage or the like.

That is, the absorbent polymer substance (1) shown in FIG.
When the absorbent polymer substance (1) absorbs a body fluid, the method of laying a wide area is such that the absorbent polymer substance (1) expands into a plate shape between the absorption layers (2) and (3) and gels. This absorbent polymer substance (1) has an advantage that it can gelate a large amount of body fluid, but the absorption rate of body fluid is slower than that of pulp material. Therefore, the absorbent polymer substance (1) expanded in the shape of a plate hinders subsequent absorption and passage of one body fluid into one absorption layer (2), and the body fluid accumulates in the other absorption layer (3). However, the absorption rate of body fluid from the surface sheet (5) was reduced. Also, in this state, when the wearer takes a posture such as sitting down, the other absorbent layer (3) which absorbs more body fluid is compressed, and the retained body fluid causes backflow and side leakage. Was likely to occur.

The conventional method shown in FIG. 8 in which the absorptive polymer substance (1) is laid in parallel stripes with a small gap (4) is used through this gap (4). The early days of
Since the body fluid is absorbed, the body fluid can be quickly absorbed. However, in this conventional method, since the space (4) between the linear absorbent polymer substances (1) is small, the swollen absorbent polymer substance (1) may be adjacent to the linear absorbent polymer substances. It came into contact with (1) and closes the interval (4) as shown in FIG. 9, and thereafter, hinders rapid absorption of body fluid. Further, if the streaky spacing (4) of the absorbent polymer substance (1) is simply increased, the amount of the absorbable polymer substance (1) used will be reduced, and the gelation amount of body fluid will be hindered. Become.

Further, for the purpose of accelerating the absorption rate of body fluid, the surface sheet (5) may be formed of a thick non-woven fabric or by laminating a plurality of non-woven fabrics. Since many expensive materials such as non-woven fabric are used, there is a drawback that the cost becomes high.

The present invention is intended to solve the above problems, and in an absorbent article using an absorptive polymer substance, the amount of the absorptive polymer substance used is the same as in the conventional method. Even if it is provided in a used amount, it does not reduce the amount of absorption as an absorbent article and makes it possible to gelate a large amount of body fluid. Further, it is intended to accelerate the absorption rate of the body fluid into the one absorbent layer on the leak preventive sheet side to prevent the body fluid from accumulating in the other absorbent layer on the surface sheet side and to smoothly absorb the body fluid. Further, even when the wearer takes a posture such as sitting down, there is no backflow of body fluid and it is intended to prevent lateral leakage of body fluid.

[0010]

In order to solve the above-mentioned problems, the first invention is to provide a pulp material between a body fluid impermeable leak-proof sheet and a body fluid permeable surface sheet. A body fluid-absorbing absorbent layer body is formed, and this body is formed by laminating one absorbing layer and the other absorbing layer, and the one body absorbing layer has a body fluid permeation interval. One of the absorbent polymer substances is mixed with the pulp material through the through and arranged in parallel streaks, and the other absorbent polymer substance is mixed with the pulp material while facing the permeation interval in the other absorbent layer. Are arranged in parallel streaks, and one absorbing layer and the other absorbing layer are embossed.

A second aspect of the invention is a body fluid-impermeable absorbent layer body made of a pulp material interposed between a body fluid-impermeable leak-proof sheet and a body fluid-permeable surface sheet. Then, the absorbent layer body is formed by laminating one absorbent layer and the other absorbent layer, and one absorbent polymer substance is mixed with the pulp material in the one absorbent layer through a body fluid permeation interval. Are arranged in parallel stripes, and the other absorbent polymer material is arranged in parallel stripes on the surface of the one absorbent layer so as to face the transmission interval, and the surface of the other absorbent polymer material is arranged on the other surface. It is characterized in that it is covered with an absorption layer, and one absorption layer and the other absorption layer are embossed.

A third aspect of the present invention is the one in which a body fluid-absorbent absorbent layer body made of a pulp material is interposed between a body fluid-impermeable leak-proof sheet and a body fluid-permeable surface sheet. Then, the absorbent layer body is formed by laminating one absorbent layer and the other absorbent layer, and one absorbent polymer substance is mixed with the pulp material in the one absorbent layer through a body fluid permeation interval. Are arranged in parallel stripes, and the other absorbent polymer material is arranged in parallel stripes on the surface of the one absorbent layer so as to face the transmission interval, and the surface of the other absorbent polymer material is arranged on the other surface. While being covered with an absorbent layer, the other absorbent polymer substance is exposed to the other absorbent polymer substance, and the upper absorbent polymer substance is mixed with the pulp material and arranged in parallel stripes. The absorption layer and the absorption layer are embossed.

In the absorbent polymer substance, the amount of one absorbent polymer substance in one absorbent layer is set to 14.28 wt% to 85.72 wt% with respect to the total amount of the other absorbent layer. The amount of the other absorbent polymer substance arranged may be 14.28 wt% to 85.72 wt%.

In the absorbent polymer substance, the amount of one absorbent polymer substance in one absorbent layer is set to 14.28 wt% to 85.72 wt% with respect to the total amount of the one absorbent layer. The amount of the other absorbent polymer substance is 14.28 wt% to 85.72 wt%
It may be%.

In the absorbent polymer substance, the amount of one of the absorbent polymer substances in the one absorbent layer is set to 14.28 wt% to 71.44 wt% with respect to the total amount of the one absorbent layer. The amount of the other absorbent polymer substance is 14.28 wt% to 71.44 wt
%, On the other hand, the amount of the upper absorbent polymer substance arranged in the absorption layer may be 14.28 wt% to 71.44 wt%.

Further, the arrangement width of the parallel streak-like absorbent polymer substance may be formed in a range of 5 mm to 20 mm.

Further, the permeation interval of body fluid may be 10 mm to 50 mm.

[0018]

In the absorbent article constructed as described above, the body fluid permeates from the body fluid-permeable topsheet to the absorbent layer body side, and the body fluid is sucked into the other absorbent layer on the topsheet side.
Up to this process, the first to third inventions produce the same action.

In the absorbent article according to the first aspect of the present invention, the other absorbent polymer substance is mixed with the pulp material in the other absorbent layer on the surface sheet side. Gel the contacted body fluid.

Further, even if the other absorbable polymer substance gels body fluid and expands in volume, the reason is as follows.
Since the permeation interval of body fluid can be increased, the gelled gel does not come into contact with the adjacent linear absorbent polymer substance. Then, the remaining body fluid that exceeds the gelling ability is quickly absorbed and moved to the leak preventive sheet side through the permeation interval. Therefore, even if a large amount of bodily fluid is discharged at one time, the bodily fluid exceeding the absorptive capacity of the other absorbent layer has a high absorption rate in the one absorbent layer, so that the bodily fluid is smoothly absorbed and side leakage is prevented.

Since the body fluid gelled by the other absorbent polymer substance is absorbed and held in the other absorbent layer,
Body fluid hardly causes wet back on the surface sheet side, and prevents skin rash and itching.

Further, one absorbent polymer substance is mixed with the pulp material and arranged in parallel streaks in the one absorbent layer on the side of the leakproof sheet, facing the permeation interval. Then, one of the absorptive polymer substances comes into contact with the body fluid that has passed through the permeation interval to be gelated, and on the other hand, the absorptive polymer substance is surely absorbed and gelated and held in the absorbent layer. Thus, the body fluid that has rapidly passed through the permeation interval in the other absorption layer can be gelated by the one absorbent polymer substance positioned so as to face the permeation interval. Since the absorptive polymer substance is arranged in two stages, a large amount of bodily fluid can be gelated without reducing the total amount used even if the permeation interval is formed large.

In the absorbent article according to the first aspect of the present invention, the amount of the absorbent polymer substance is 14.28 wt% to the total amount of the absorbent polymer substance in the one absorbent layer. 85.72wt%
And preferably 28.5 wt% to 71.5 wt%. In addition, the amount of the other absorbent polymer substance arranged in the other absorbent layer was 14.2.
8 wt% to 85.72 wt%, preferably 28.5 wt% to 71.5 wt%
And By arranging in this way, the absorption efficiency of the absorptive polymer substance can be increased and the balance can be improved. In addition, if the absorbable polymer substance is formed in a range other than the above arrangement amount, the balance between the absorption amount and the absorption rate of body fluid is disturbed and the absorption capacity is reduced, which is not preferable.

In the absorbent article of the second invention, after the body fluid is sucked into the other absorbent layer, the body fluid is moved to the leak preventive sheet side. On the other hand, since the absorbent polymer layer is not arranged in the other absorbent layer, the absorption rate of body fluid from the surface sheet is fast, and even if a large amount of body fluid is discharged, the body fluid should be quickly drawn into the one absorbent layer side. Is possible. Therefore, the wearer does not feel wet, and the feeling of use can be improved.

When the body fluid moves to the side of the leak-proof sheet, it comes into contact with the other absorptive polymer substance arranged in parallel stripes on the surface of the one absorbent layer. By this contact, body fluid
It is gelled by the other absorbent polymer material.

The other absorbent polymer substance obtained by gelling the body fluid can secure a large space for permeating the body fluid even when the volume is expanded, as in the first invention described above. No contact with absorbent polymeric materials. Therefore, the remaining body fluid that exceeds the gelling ability quickly moves to the leak preventive sheet side through the permeation interval. In addition, since the absorbent layer absorbs and holds the body fluid gelled by the other absorbent polymer substance, the body fluid hardly causes wet back on the surface sheet side, and skin rash, itchiness, etc. To prevent.

In addition, one absorbent polymer substance is mixed with the pulp material and arranged in parallel streaks in the one absorption layer so as to face the above-mentioned permeation interval. Therefore, the body fluid that has passed through the permeation interval comes into contact with one of the absorptive polymer substances to be gelated, and on the other hand, the bodily fluid is surely absorbed and gelled and retained in the absorbent layer. Thus, the body fluid that has passed through the permeation interval of the other absorbent polymer substance located on the surface of the one absorbent layer should be gelated by the one absorbable polymer substance positioned so as to face this permeation interval. Is possible. In addition, since the absorbent polymer substance is located in two stages, the amount of the whole use is not reduced and a large amount of body fluid can be gelled.

In the absorbent article according to the second aspect of the present invention, the amount of the absorptive polymer substance in the one absorbent layer is 14.28 wt% to the total amount of the absorptive polymer substance. 85.72wt%
And preferably 28.5 wt% to 71.5 wt%. Also, the amount of the other absorbent polymer substance arranged on the surface portion of one absorbent layer is set to 14.28 wt% to 85.72 wt%, preferably 28.5 wt% to 7
1.5 wt% With such an arrangement, the absorption efficiency of the absorptive polymer substance is increased and the balance is improved. Also,
If the absorptive polymer substance is formed in a range other than the above arrangement amount, the balance between the absorption amount and the absorption rate of body fluid is disturbed and the absorption capacity is lowered, which is not preferable.

In the absorbent article of the third invention, when body fluid is sucked from the surface sheet into the other absorbent layer, the absorbent polymer in the upper part is mixed with the pulp material in the other absorbent layer and arranged in parallel streaks. The substance gels the bodily fluid with which it comes into contact.

In addition, since the absorbent polymer material in the upper portion can secure a large body fluid permeation interval for the reason described below even if the body fluid is gelled and the volume is expanded, adjacent streaky absorbent polymers are provided. No contact with substances. Then, the remaining body fluid that exceeds the gelling ability is quickly absorbed and moved to the leak preventive sheet side through the permeation interval. Therefore, even when a large amount of body fluid is discharged, the body fluid that exceeds the absorbing capacity of the other absorbing layer has a high absorption rate into the one absorbing layer, so that the body fluid is smoothly absorbed and side leakage is prevented.

Further, since the body fluid gelled by the absorbent polymer substance on the upper side is absorbed and held in the other absorbent layer, the body fluid hardly causes wet back on the surface sheet side, and skin rash, itchiness, etc. Prevent.

When the bodily fluid that has passed through the permeation interval moves in the diffusion direction between the absorption layers, on the other hand, it comes into contact with the upper absorbent polymer substance arranged in parallel streaks on the surface of the absorption layer to be gelated and absorbed. It is surely absorbed and gelled between the layers.

The bodily fluid that has passed through the permeation interval is gelated by contacting one of the absorptive polymer substances arranged facing the permeation interval, and is sealed inside the one absorbent layer. As described above, the body fluid that has rapidly passed through the permeation interval between the upper absorbent polymer substance and the other absorbent polymer substance is gelated by the one absorbent polymer substance positioned facing this permeation interval. It becomes possible to do. In addition, since the absorbent polymer substance is arranged in three stages, it is possible to gelate a large amount of body fluid without decreasing the amount used as a whole while providing a large permeation interval.

Further, in the third invention, the absorptive polymer substance has a disposition amount of one of the absorptive polymer substances in the one absorbent layer of 14.28 wt% to 71.44 wt% with respect to the total disposition amount, It is preferably 28.5 wt% to 57.12 wt%. In addition, the amount of the other absorbent polymer substance arranged on the surface portion of one absorbent layer was 14.28 wt%.
〜71.44wt%, preferably 28.5wt% 〜57.12wt%. On the other hand, the disposition amount of the upper absorbent polymer substance on the other absorption layer is 14.28 wt% to 71.44 wt%, preferably 28.5 wt%
〜57.12wt% By arranging in this way, the absorption efficiency of the absorptive polymer substance can be enhanced and the absorbent polymer substance can be arranged in good balance. Further, if the absorptive polymer substance is formed in a range other than the above arrangement amount range, the balance between the absorption amount and the absorption rate of body fluid is disturbed and the absorption capacity is lowered, which is not preferable.

Further, if the arrangement width of the parallel streak-like absorbent polymer substance is set to 5 mm to 20 mm, the absorbent layer can be absorbed even when the absorbent polymer substance gels and absorbs body fluid to expand the volume. Is less likely to cause mold scratches and can prevent lateral leakage of body fluid due to mold scratches. Further, if the arrangement width is less than 5 mm, the width is too small, which makes formation difficult. On the other hand, if the arrangement width exceeds 20 mm, the absorptive polymer substance is apt to cause blocking and the absorptivity of body fluid is lowered, which is not preferable.

Further, if the body fluid is formed with a permeation interval of 10 mm to 50 mm, even when the absorbent polymer substance expands in volume,
There is no risk of adjacent absorbent polymer substances contacting each other,
It is possible to surely maintain the transmission interval. If the permeation interval is less than 10 mm, the interval is too small and molding becomes difficult. Further, if the permeation interval exceeds 50 mm, the interval is too large, and effective absorption of body fluid becomes difficult.

[0037]

EXAMPLES The present invention is as follows, as mentioned above, a disposable diaper,
Although it can be applied to various absorbent articles such as sanitary napkins and the like, in this example, if an example used as a disposable diaper is described with reference to the drawings, (10) is As shown in FIG. 1, the leak-proof sheet is made of a body fluid impermeable material such as polyethylene and is interposed between the body fluid permeable surface sheet (11) such as a non-woven fabric and the like. ).

The absorbent layer main body (12) is made by stacking one absorbent layer (13) on the side of the leak-proof sheet (10) and the other absorbent layer (14) on the side of the surface sheet (11) by laminating a pulp material. Form.

The absorbent layer body (12) has one absorbent polymer substance (15) located in the one absorbent layer (13). As shown in FIG. 2, one of the absorbent polymer substances (15) is arranged by mixing the pulp material from one end to the other end in the one absorption layer (13) through the body fluid permeation interval (16). And arrange them in parallel streaks. The absorbent layer body (12) is
The other absorbent polymer substance (17) in the other absorbent layer (14)
To place. As shown in FIG. 2, the other absorbent polymer substance (17) is mixed with the pulp material from one end to the other end in the other absorption layer (14) through the body fluid permeation space (16) to form parallel strands. Arranged in a shape. Then, the other absorptive polymer substance (17) is arranged so as to face the transmission interval (16) of the one absorptive polymer substance (15). On the other hand, the absorption layer
(13) and the other absorbing layer (14) are pressed to perform embossing treatment. This embossing method is based on the absorption layer (13) (14)
May be entirely pressed, or may be partially pressed at regular intervals. By performing the embossing treatment in this manner, it becomes possible to increase the absorption rate of body fluid.

Further, this absorbent polymer substance (15) (17)
In one example, 5 g to 7 g is used for each disposable diaper. In addition, the absorptive polymer substance (15) (17)
The amount of one absorbent polymer substance (15) disposed in the one absorption layer (13) is set to 14.28 wt% to 85.72 wt% with respect to the total amount disposed. And preferably, the arrangement amount is 28.5 wt% to 71.5 wt.
%. Further, the amount of the other absorbent polymer substance (17) arranged in the other absorbent layer (14) is set to 14.28 wt% to 85.72 wt%. And preferably, the arrangement amount is 28.5 wt% to 71.5 wt.
%. When formed in this way, the absorbent polymer substance
(15) It is possible to enhance the absorption efficiency of (17) and arrange them in good balance. In addition, the absorptive polymer substance (15) (17)
If it is formed in a range other than the above arrangement amount, the balance between the absorption amount and the absorption rate of body fluid is disturbed and the absorption capacity is lowered, which is not preferable.

The absorptive polymer substances (15) and (17) are
As shown in Fig. 1 and Fig. 2, the arrangement width (18) of parallel stripes is 5 mm.
It is formed with ~ 20mm. When formed in this way, the absorbent layer body absorbs the body fluid by gelation and expands even if the volume expands.
In the case of (12), mold scratches are less likely to occur, and lateral leakage of body fluid due to mold scratches can be prevented.

Further, the absorptive polymer substances (15) and (17) are
As shown in FIGS. 1 and 2, the permeation interval (16) for body fluid is 10 mm to
Form with 50 mm. By doing in this way, even if the volume expands, there is no risk of adjacent absorbent polymer substances (15) and (17) contacting each other, and it becomes possible to reliably maintain the permeation interval (22). .

In the absorbent article (20) constructed as described above, the body fluid permeable top sheet (11) shown in FIG. 1 is used.
Body fluid permeates from the body to the absorbent layer body (12) side,
Body fluid is sucked into the other absorbing layer (14) on the (11) side.

When the body fluid contacts the other absorbent polymer substance (17) disposed inside the other absorbent layer (14), the absorbable polymer substance (17) gels the body fluid.

Further, the absorptive polymer substances (15) and (17) are
Since they are arranged in two stages, the permeation interval (22) can be increased without reducing the total amount used. Therefore, even if the other absorbent polymer substance (17) gels body fluid and expands its volume, as shown in FIG.
Because it can secure a large
Never touch (17). Then, the remaining bodily fluid that exceeds the gelling ability passes through the permeation interval (22) and is a leak-proof sheet.
Move to (10) side quickly. Therefore, even when a large amount of body fluid is discharged, body fluid that exceeds the absorption capacity of the other absorbent layer (14) has a high rate of absorption of body fluid into the one absorbent layer (13), so it absorbs body fluid smoothly, Prevent side leakage.

Since the body fluid gelled by the other absorbent polymer substance (17) is absorbed and held in the other absorbent layer (14), it flows backward to the surface sheet (11) side, Almost no wet back occurs, and it is possible to prevent skin rashes and itchiness.

Also, facing the transmission interval (22),
On the other hand, in the absorbent layer (13), one absorbent polymer substance (1
5) are arranged in parallel stripes. Therefore, most of the bodily fluid that has passed through the permeation interval (22) of the other absorbent polymer substance (17) is contacted with one of the absorbent polymer substance (15) and gelated, and the one absorbent layer (13) ), It is possible to surely absorb body fluid.

As described above, the absorbent article (20) is prepared by using the absorbent polymer substance (15) (17) as compared with the conventional method without reducing the amount of the absorbent polymer substance (15) (17) used. Even when the same amount is used, the body fluid permeation interval (22) can be increased. Therefore, even if the absorbent article (20) gels the body fluid by the absorbent polymer substance (17) arranged in parallel streaks and expands the volume, the absorbent article (20) is filled with the body fluid between the absorbent polymer substance (17). Since the permeation interval (22) can be secured, the gelled adjacent absorbent polymer substances (17) do not come into contact with each other. Therefore, the absorbent polymer substance (15)
Compared with the conventional method, (17) does not have a possibility that the space will be closed and body fluid will remain in the other absorbent layer (14) on the surface sheet (11) side even if the usage amount is increased. Smooth passage and absorption of body fluid into the absorption layer (13) becomes possible.

The body fluid gelled by the absorptive polymeric substances (15) and (17) is stably absorbed and held in the one absorbent layer (13) and the other absorbent layer (14), so that the body fluid is absorbed. Almost no wet back occurs on the surface sheet side, and it is possible to prevent skin rashes and itchiness. In addition, even if the wearer takes a posture such as sitting down, bodily fluids are
There is no backflow to the 1) side, and side leakage due to backflow of body fluid can be prevented. In addition, since the absorbent polymer (20) has the absorbent polymer substances (15) and (17) arranged in two stages, the total amount used is not reduced and the large permeation interval (22) is maintained.
Can be formed, and a large amount of body fluid can be gelled while accelerating the absorption rate.

Further, the absorbent article (20) has a large permeation interval (22) between the absorbent polymer substances (17) to accelerate the absorption rate of body fluids. Since it is not necessary to form (11) with a thick non-woven fabric or to form a plurality of non-woven fabrics, it is possible to manufacture at low cost.

In the first embodiment, one absorbent polymer substance (15) is placed in the one absorbent layer (13) and the other absorbent polymer substance (17) is placed in the other absorbent layer (14). ) Inside. However, in the second embodiment, the one-sided absorption layer (13)
As shown in FIG. 4, one of the absorbent polymer substances (15)
Are mixed with the pulp material and arranged in parallel streaks. Further, on the surface of this one-sided absorption layer (13), one side of the absorbent polymer substance
The other absorptive polymer substance (17) is arranged in parallel stripes so as to face the transmission interval (16) of (15), and the surface of the other absorptive polymer substance (17) is arranged on the other absorption layer (14). ).

Thus, the other absorbable polymer substance (1
By arranging 7) between the one absorption layer (13) and the other absorption layer (14), the other absorption layer (14) does not have the absorptive polymer substance (17). Seat (11)
The absorption rate of body fluid from the body is further increased, and a large amount of body fluid can be quickly drawn. Therefore, the wearer does not feel wet, and the feeling of use can be improved.

In each of the above examples, one absorbent polymer substance (15) and the other absorbent polymer substance (17) were provided and arranged in two stages. However, in the third embodiment, the absorbent polymer substances (15), (17) and (21) are arranged in three stages. In this arrangement method, as shown in FIG. 5, the one absorbent polymer material (15) is mixed with the pulp material in the one absorbent layer (13) through the body fluid permeation interval (16) to form a parallel streak. To place. The surface of the one absorbent layer (13) is exposed to the permeation interval (16) of the one absorbent polymer substance (15), and the other absorbent polymer substance (17) is opposed to the permeation interval (22). Through parallel lines. Further, the surface of the other absorbent polymer substance (17) is covered with the other absorbent layer (14) and the other absorbent polymer substance (17) is exposed in the other absorbent layer (14). Upper absorbent polymer (2
1) is mixed with pulp material and arranged in parallel streaks.

Thus, the absorbent polymer substance (15) (1
7) By arranging (21) dispersed in three stages, it is possible to gelate a large amount of body fluid without reducing the total amount used.

In each of the above examples, the other absorbent polymer substance (17) was arranged from one end to the other end of the other absorbent layer (14). However, in another embodiment, the other absorptive polymer material (17) is placed in the middle part except both ends in the length direction. If formed in this way, the other absorbent polymer substance (17) can be concentratedly arranged in the part where the wearer's local part is located, uneven absorption of body fluid is unlikely to occur, and body fluid can be efficiently absorbed. .

[0056]

Since the present invention is constructed as described above, the absorbent article can be used in the same amount as in the conventional method without reducing the amount of the absorbent polymer substance used. Even if it is provided with, it is possible to set a large body fluid permeation interval. Therefore, even if the bodily fluid is gelled by the absorbent polymer substances arranged in parallel streaks and the volume is expanded, the permeation interval of the bodily fluid can be secured between the absorptive polymer substances. -Like absorbent polymer material does not come into contact. Therefore, as compared with the conventional method, the absorbent polymer substance does not have a possibility that the space will be closed and body fluid will remain in the other absorbent layer even if the amount used is increased. The smooth passage and absorption of Further, even when a large amount of body fluid is discharged, since the body fluid permeation interval is set to be large, the body fluid can be absorbed at a high speed, and reliable side leakage can be prevented.

The body fluid gelled by the absorbent polymer substance is stably absorbed and held in the other absorbent layer, the one absorbent layer, the absorbent layer, etc., so that the body fluid is wet back to the surface sheet side. It rarely occurs and can prevent skin rashes and itchiness. Further, even if the wearer takes a posture such as sitting down, since the body fluid is gelled and contained, backflow does not occur on the surface sheet side, and side leakage due to backflow can be prevented. In addition, since the absorbent polymer substance is arranged in two or three stages, it is possible to form a large permeation interval without reducing the amount used as a whole, and to increase the absorption rate and to collect a large amount of body fluid. Can be gelled.

In the absorbent article, since the permeation interval is increased between the absorbent polymer substances to accelerate the absorption rate of the body fluid, the surface sheet may be formed of thick non-woven fabric or a plurality of sheets may be formed as in the conventional method. It is not necessary to form the non-woven fabric by laminating the non-woven fabric, and it is possible to manufacture at low cost.

[Brief description of drawings]

FIG. 1 is a sectional view of a first embodiment.

FIG. 2 is a plan view of a second embodiment.

FIG. 3 is a cross-sectional view of the first embodiment showing a state in which the absorbent polymer substance has absorbed body fluid.

FIG. 4 is a sectional view of a second embodiment.

FIG. 5 is a sectional view of a third embodiment.

FIG. 6 is a plan view of an example in which an absorbent polymer substance is arranged short.

FIG. 7 is a cross-sectional view of a conventional method in which an absorptive polymer substance is widely interposed.

FIG. 8 is a cross-sectional view of a conventional method in which a narrow gap is provided between absorbent polymer substances.

9 is a cross-sectional view of the conventional method of FIG. 8 absorbing body fluid.

[Explanation of symbols]

 10 Leakage Prevention Sheet 11 Surface Sheet 12 Absorption Layer Body 13 One Absorption Layer 14 Another Absorption Layer 15 One Absorbing Polymer Material 16 Permeation Interval 17 The Other Absorbing Polymer Material 18 Arrangement Width 21 Upper Absorbing Polymer Material 22 Transmission interval

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical display location A61F 13/18 307 F (72) Inventor Shinji Yoshimura 1050 Shinba-cho, Kohoku-ku, Yokohama-shi, Kanagawa Stock company Shiseido Development Laboratory (72) Inventor Tadanori Samejima 300 Hiragaki Fuji City, Shizuoka Prefecture Honshu Paper Co., Ltd. (72) Inventor Masafumi Sato 300 Hiragaki Fuji City, Shizuoka Prefecture Honshu Paper Co., Ltd.

Claims (8)

[Claims] 1. A body fluid-absorbent absorbent layer body made of a pulp material, which is interposed between a body fluid-impermeable leak-proof sheet and a body fluid-permeable surface sheet. Is formed by laminating one absorption layer and the other absorption layer,
In this one absorbent layer, one absorbent polymer substance is mixed with the pulp material through a body fluid permeation interval and arranged in parallel streaks, and in the other absorbent layer, the other one is exposed to the permeation interval. An absorbent article characterized in that an absorbent polymer material is mixed with a pulp material and arranged in parallel streaks, and one absorbent layer and the other absorbent layer are embossed. 2. A body fluid absorbent absorbent layer body made of a pulp material, which is interposed between a body fluid impermeable leak-proof sheet and a body fluid permeable surface sheet. Is formed by laminating one absorption layer and the other absorption layer,
In the one absorbent layer, one absorbent polymer substance is mixed with the pulp material through the permeation interval of the body fluid and arranged in parallel streaks, and the surface of the one absorbent layer is exposed to the permeation interval. The other absorbent polymer substance is arranged in parallel streaks,
An absorbent article characterized in that the surface of the other absorbent polymer substance is covered with the other absorbent layer, and the one absorbent layer and the other absorbent layer are embossed. 3. A body fluid-impermeable, leak-proof sheet and a body fluid-permeable surface sheet, wherein a body fluid-absorbent absorbent layer body formed of a pulp material is interposed between the body fluid-permeable leak-proof sheet and the body fluid-permeable surface sheet. Is formed by laminating one absorption layer and the other absorption layer,
In the one absorbent layer, one absorbent polymer substance is mixed with the pulp material through the permeation interval of the body fluid and arranged in parallel streaks, and the surface of the one absorbent layer is exposed to the permeation interval. The other absorbent polymer substance is arranged in parallel streaks,
The surface of the other absorbent polymer substance is covered with the other absorbent layer and the other absorbent polymer substance is exposed to the other absorbent polymer substance and the upper absorbent polymer substance is mixed with the pulp material. An absorbent article, wherein the absorbent articles are arranged in parallel streaks, and one absorbent layer and the other absorbent layer are embossed. 4. The absorbent polymer substance, relative to the total arrangement amount,
On the other hand, the amount of one absorbent polymer substance placed in the absorbent layer should be 1
4. 28% by weight to 85.72% by weight, and the amount of the other absorbent polymer substance arranged in the other absorbent layer is set to 14.28% by weight to 85.72% by weight. 5. The absorbent polymer substance, relative to the total arrangement amount,
On the other hand, the amount of one absorbent polymer substance placed in the absorbent layer should be 1
4.28wt% ~ 85.72wt%, the amount of the other absorbent polymer on the surface of one absorbent layer is 14.28wt% ~ 85.72wt%
The absorbent article according to claim 2, wherein 6. The absorbable polymer substance, relative to the total arrangement amount,
On the other hand, the amount of one absorbent polymer substance placed in the absorbent layer should be 1
4.28wt% ~ 71.44wt%, and the amount of the other absorbent polymer substance arranged on the surface part of one absorbent layer is 14.28wt% ~ 71.44wt%
4. The absorbent article according to claim 3, wherein the amount of the upper absorbent polymer substance disposed in the absorbent layer is 14.28 wt% to 71.44 wt%. 7. The arrangement width of the parallel streak-like absorbent polymer substance is formed in the range of 5 mm to 20 mm.
Or the absorbent article of 3. 8. The absorbent article according to claim 1, wherein the body fluid permeation interval is 10 mm to 50 mm.