JP4090568B2 - Pants-type paper diapers - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, both the front and back body parts are joined to form openings around the legs and the waist, respectively, and elastic elastic members are fixed along at least the openings around the legs to form a gather around the legs. It is related to the underpants type disposable diaper.
[0002]
[Prior art]
In general, in this type of pants-type paper diaper, as shown in FIGS. 10 to 12, the front body 101F and the back body 101B of a pant-shaped sheet 101 that substantially forms a diaper shape are joined at both sides, and both legs 103L. , 103R and the waist are respectively formed, and on the inner surface side thereof, an absorbent body 120 is fixed by laminating a liquid-impermeable back sheet 121, an absorbent material 122, and a liquid-permeable top sheet 123 in this order. .
[0003]
Further, leg gathers GL and GR (see FIG. 2) are formed in the left leg circumference 103L and the right leg circumference 103R, respectively, to prevent side leakage, and the left side of the front body 101F with respect to the pant-shaped sheet 101. The first elastic elastic member extends from the waist side portion 102FL along the left leg circumference 103FL of the front body, further across the crotch portion 104, and continues to the right waist side portion 102FR of the front body along the right leg circumference 103FR of the front body. 110 (110 ′, 110 ″) is fixed, and the left waist side portion 102BL of the back body 101B extends along the left leg circumference 103BL of the back body, and further across the crotch portion 104 to the right leg circumference 103BR of the back body. The second elastic elastic member 111 (111 ′, 111 ″) is fixed so as to continue to the right waist side portion 102BR of the back body. Generally, a plurality of elastic elastic members are provided side by side.
[0004]
In such a pants-type paper diaper, the arrangement form of the elastic stretchable member affects the side leakage prevention performance and the like. Therefore, conventionally, pants-type paper diapers that employ various arrangements of elastic elastic members have been proposed.
[0005]
<Conventional example 1>
The pants-type disposable diaper 100 shown in FIG. 10 employs an arrangement form of elastic stretchable members in which a first elastic stretchable member 110 and a second elastic stretchable member 111 intersect at two points in the crotch portion 104. X5 and X5 indicate intersections. As this example, there is a pants-type paper diaper disclosed in Japanese Patent Laid-Open No. 3-82467 and Actual No. 3024357.
[0006]
<Conventional example 2>
The pants-type disposable diaper 100 ′ shown in FIG. 11 employs an arrangement form of elastic elastic members in which the first elastic elastic member 110 ′ and the second elastic elastic member 111 ′ do not intersect at the crotch portion 104. As this example, there is a pants-type paper diaper disclosed in Japanese Utility Model No. 3024357.
[0007]
<Conventional example 3>
A pants-type disposable diaper 100 ″ shown in FIG. 12 crosses a first elastic stretchable member 110 ″ and a second elastic stretchable member 111 ″ at two locations in the crotch portion 104, and these intersecting locations X6, X6. An arrangement form of elastic stretchable members formed by cutting both the first elastic stretchable member 110 ″ and the second elastic stretchable member 111 ″ between X6 is adopted. As this example, there is a pants-type paper diaper disclosed in JP-A-6-197925, JP-A-6-254117, and JP-A-6-327716.
[0008]
[Problems to be solved by the invention]
However, the conventional pants-type paper diaper that employs the arrangement of elastic elastic members has the following problems.
[0009]
(A) In the pants-type paper diaper of Conventional Example 1, the first elastic stretch member and the second elastic stretch member between the intersections were separated by only about 2 cm, and therefore the first and second portions with respect to the crotch portion As a result of the contraction force of both elastic elastic members, the absorber contracted in the width direction and only the crotch portion was lifted to the body side of the adherend. Therefore, the pants-type paper diaper of Conventional Example 1 has a problem that the fit to the body of the wearer is poor.
[0010]
Similarly, in the pants-type disposable diaper of Conventional Example 2, the contraction force of both the first and second elastic elastic members acts on the crotch part, the absorber contracts in the width direction, and only the crotch part is covered. As a result of being lifted to the body side of the wearer, there is a problem that the fit to the body of the wearer is poor.
[0011]
On the other hand, the pants-type paper diaper of Conventional Example 3 lifts the crotch part toward the body side of the wearer, although both the first and second elastic elastic members are cut and the absorbent body is difficult to contract in the width direction. Since the force becomes too weak, there is a problem that gaps are easily generated around the legs.
[0012]
Therefore, the main problem of the present invention is to improve the fit to the body of the wearer and make it difficult to form a gap around the legs, thereby improving the side leakage prevention performance.
[0013]
[Means for Solving the Problems]
The underpants-type paper diaper of the present invention that has solved the above-described problems is a pant-shaped sheet formed by joining both the front and back bodies and forming openings around the legs and the waist. The whole is fixed to the inner surface, and includes an absorbent body extending in the front-rear direction around the crotch part,
The absorbent body is obtained by sandwiching an absorbent material between a liquid-permeable top sheet having no opening and a liquid-impermeable back sheet ,
From the left waist side of the front body along the left leg around the front body, and further across the center of the absorbent material in the width direction and along the right leg of the front body to the right waist side of the front body, A first elastic elastic member fixed between a plurality of non-woven fabrics constituting a pant-shaped sheet;
From the left waist side of the back body along the left leg of the back body, and further across the center of the absorbent material in the width direction and along the right leg of the back body to the right waist side of the back body, a second elastically stretchable members which are fixed between a plurality of non-woven fabric that constitutes the shorts-shaped sheet has a,
In a pants-type paper diaper in which gathers are formed around the left leg and around the right leg by the first elastic stretch member and the second elastic stretch member;
The first elastic elastic member and the second elastic elastic member intersect at at least two points in the crotch portion, and the first elastic elastic member and the second elastic elastic member between these intersecting points. The member is characterized by being separated by 4 cm or more.
[0014]
In the pants-type paper diaper of the present invention, the first elastic elastic member between the crossing portions passes through the center part in the front-rear direction of the crotch portion, and the second elastic elastic member between the crossing points is in the front body. It is preferable to configure so as to pass above the crotch portion. Conversely, the first elastic elastic member between the intersections passes above the crotch part in the back body, and the second elastic elastic member between the intersections is a central part in the front-rear direction of the crotch part. It is also preferable to configure to pass through. Further, the first elastic elastic member between the crossing portions passes above the crotch portion in the back body, and the second elastic elastic member between the crossing portions is above the crotch portion in the front body. It can also be configured to pass through.
[0015]
Moreover, in the pants-type paper diaper of the present invention, it is preferable that one of the first elastic stretchable member and the second elastic stretchable member is cut between the intersecting points.
[0016]
Furthermore, in the pants-type paper diaper of the present invention, it is also preferable that a third elastic elastic member is fixed around at least one of the front body and the back body.
[0017]
<Action 1>
The paper diaper of the present invention crosses the first elastic stretchable member and the second elastic stretchable member at at least two locations in the crotch portion, and the first elastic stretchable member and the second elastic stretchable member between these intersecting locations. Are separated by 4 cm or more. Thereby, the contraction force of both elastic elastic members acts on different parts of the absorber, and as a result, the amount of contraction in the width direction of the absorber is reduced, and the absorber is uniformly lifted toward the body side of the adherend. In addition, since the first and second elastic elastic members intersect at least two places in the crotch portion, the first and second elastic elastic members are continuous around the entire leg, and it is difficult for a gap to be generated around the leg.
[0018]
Therefore, the disposable diaper of the present invention has a better fit to the adherend of the absorbent body than the conventional diaper, and is less likely to cause side leakage.
[0019]
<Action 2>
In the present invention, the first elastic elastic member between the crossing portions passes through the center part in the front-rear direction of the crotch part, and the second elastic elastic member between the crossing parts passes above the crotch part in the front body. The urine receiving pocket is formed in the front part of the crotch portion of the absorbent body.
[0020]
<Action 3>
On the contrary, in the present invention, the first elastic elastic member between the crossing portions passes above the crotch portion in the back body, and the second elastic elastic member between the crossing portions passes through the central portion in the front-rear direction of the crotch portion. If comprised, a stool receiving pocket is formed in the crotch rear part of an absorber.
[0021]
<Action 4>
Furthermore, when the first elastic stretchable member between the crossing portions passes above the crotch portion in the back body and the second elastic stretchable member between the crossing portions passes above the crotch portion in the front body, absorption is achieved. A urine receptacle and a stool receptacle pocket are formed in the crotch region of the body.
[0022]
<Action 5>
In the present invention, when one of the first elastic elastic member and the second elastic elastic member between the intersections is cut, the contraction force in the width direction acting on the absorbent body is halved and cut. The elastic elastic member which is not operated acts to lift the absorber to the body side of the adherend. Therefore, the fitting property with respect to the adherend of the absorber is improved. Moreover, since the crossing is cut, the continuity of the elastic elastic member around the leg is not lost.
[0023]
<Operation 6>
When the present invention is applied to a pants-type paper diaper in which a third elastic stretchable member is fixed around at least one waist of the front body and the back body, the first elastic stretchable member and / or the second elastic stretchable member and the second The distance from the elastic elastic member 3 is shorter than that of the conventional one. As a result, the contraction force of the first elastic stretch member and / or the second elastic stretch member and the third elastic stretch member act so as to oppose each other, and the front body and / or the back body are uniformly attached. It comes to be pressed against the person's body side.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows a developed state of a pant type paper diaper example P1 according to the present invention, FIG. 2 shows a front surface of the pant type paper diaper P1, and FIG. 3 shows a bottom surface thereof. That is, the paper diaper P1 of this example is composed of a pant-shaped sheet 1 and an absorbent body 20 that is fixed to the inner surface of the pant-shaped sheet 1 and extends in the front-rear direction with the crotch portion 4 as the center. 1 is formed by opening both sides of the leg 1L and 3R and the waist 30 around the legs and waist 30 respectively. T denotes a post-processing tape for rounding and fastening the paper diaper P1 after use, and is usually provided at the center in the width direction of the outer surface 40B of the back body.
[0025]
The absorbent body 20 is the same as the conventional one, and is made of a nonwoven fabric and the like, and a liquid-permeable top sheet 23 that directly touches the wearer's skin, and a polyethylene film or other non-permeable liquid made of water-repellent treatment. The absorbent back sheet 21 can be formed by sandwiching an absorbent material 22 mainly composed of cotton-like pulp and, if necessary, wrapped with absorbent paper, and adhering the peripheral portion with, for example, a hot melt adhesive.
[0026]
The pants-shaped sheet 1 is formed by laminating and fixing a plurality of non-woven fabrics. Between them, the left waist side part 2FL of the front body 1F runs along the left leg circumference 3FL of the front body, and further across the center in the width direction. The first elastic elastic member 10 is sandwiched and fixed so as to continue to the right waist side 2FR of the front body along the right leg circumference 3FR, and the left leg of the back body from the left waist side 2BL of the back body 1B. A second elastic elastic member 11 is sandwiched and fixed along the periphery 3BL and further across the center in the width direction and along the right leg periphery 3BR of the back body to the right waist side 2BR of the back body. These first and second elastic elastic members 10 and 11 form leg circumference gathers GL and GR on the left leg circumference 3L and the right leg circumference 3R, respectively.
[0027]
In particular, in the disposable diaper P1 of the present example, the first elastic stretchable member 10 and the second elastic stretchable member 11 intersect at two locations in the crotch portion 4, and the first elastic stretchable member 10 between these intersected locations. And the second elastic elastic member 11 are separated by 4 cm or more (preferably 6 cm or more). Preferably, as shown in the figure, the first elastic stretchable member 10 between the crossing portions passes through the center part in the front-rear direction of the crotch portion 4, and the second elastic stretchable member 11 between the crossing portions is the crotch portion in the front body 1F. It is fixed so as to pass through the upper side of the part 4.
[0028]
Further, in the disposable diaper P1 of this example, a waist elastic elastic member 31F continuous from one side edge to the other side edge along the waist 30F of the front body 1F is fixed, and the waist circumference of the back body 1B is fixed. A waist elastic elastic member 31B continuous from one side end portion to the other side edge portion 30B is fixed along the 30B, and the waist circumference 30 is provided by the elastic waist members 31F and 31B around the waist. A waist circumference gather 32 is formed.
[0029]
Further, in the disposable diaper P1 of the present example, a waist front elastic elastic member 41F continuous from one side end to the other side end is fixed to the waist (around the lower abdomen) 40F of the front body 1F, and the back body 1B is fixed. A waist elastic elastic member 41B continuous from one side end to the other side edge is fixed to the waist 40B. The waist elastic elastic members 41F and 41B stretch around the waist 40 by the waist elastic elastic members 41F and 41B. A surrounding gather (not shown) is formed. In addition, the 3rd elastic expansion-contraction member said to this invention means these waist front elastic elastic members 41F and back cylinder elastic elastic members 41B.
[0030]
The advantages of the arrangement of the elastic elastic members are as follows.
(A) When the first and second elastic elastic members 10 and 11 are separated by 4 cm or more between the intersections X1 and X1, the contraction force of the elastic elastic members 10 and 11 between the intersections X1 and X1 is absorbed. This also acts on different parts of the body 20, thereby reducing the amount of shrinkage of the absorbent body 20 in the width direction and also allowing the absorbent body 20 to be lifted uniformly toward the body side of the adherend. In addition, since the first and second elastic elastic members 10 and 11 intersect at two points in the crotch portion 4, the first and second elastic elastic members 10 and 11 are continuously connected to the legs 3L and 3R as a whole. Therefore, it becomes difficult to generate a gap in the circumference 3L, 3R of the wearer's thigh leg. Therefore, the paper diaper of this example has a better fit to the adherend of the absorbent body than the conventional one, and side leakage is less likely to occur.
[0031]
(B) In particular, when the second elastic elastic member 11 between the intersections is fixed so as to pass above the crotch portion 4 in the front body 1F, the second elastic elastic member 11 and the trunk of the front body The distance from the front elastic body elastic member 41F fixed to the periphery 40F is reduced. As a result, the entire front body 1F is uniformly pressed against the adherend side by the downward contraction force of the second elastic elastic member 11 and the upward contraction force of the front elastic body elastic member 41F. Become.
[0032]
(C) As shown in the example, the first elastic stretchable member 10 between the crossing portions passes through the center part in the front-rear direction of the crotch portion 4, and the second elastic stretchable member 11 between the crossing points is in the front body 1F. When fixed so as to pass through the upper side of the crotch portion 4, the widthwise central portion of the absorbent body 20 bulges outward between the first and second elastic elastic members 10, 11 between the intersections, and thus the crotch portion 4. A urine receiving pocket B1 is formed on the front side.
[0033]
The first to sixth elastic elastic members 10, 11, 31F, 31B, 41F, 41B are usually provided side by side as shown in the figure, but may be one. As the first and second elastic elastic members 10 and 11, natural rubber yarn or synthetic rubber yarn having an appropriate thickness and cross-sectional shape can be used.
[0034]
<Modification 1>
The paper diaper P1 in the above example adopts a mode in which both the first elastic stretchable member 10 and the second stretchable member 11 are continuous, but crosses the front-rear direction center of the crotch portion between the intersections X1 and X1. A mode in which only the first elastic elastic member 10 is cut may be employed. Although not shown, it is also possible to cut only the second elastic elastic member 11 between the intersections. The former example is shown in FIGS. P2 indicates a pants-type paper diaper according to the first modification, 10L indicates the first elastic elastic member on the left side, 10R indicates the first elastic elastic member on the right side, X2 and X2 indicate the intersections, and B2 Indicates a urine receiving pocket.
[0035]
In this case, the contraction force in the width direction acting on the crotch portion of the absorbent body 20 is halved, and the second elastic elastic member 11 that is not cut lifts the absorbent body 20 toward the body side of the wearer. Works. Therefore, the fitting property with respect to the adherend of the absorbent body 20 is improved. In addition, since the first elastic elastic member 10L on the left side and the first elastic elastic member 10R on the right side intersect with the second elastic elastic member 11, respectively, the continuity of the elastic elastic members in the leg circumferences 3L and 3R is also improved. Not lost.
[0036]
<Modification 2>
In the paper diaper example P1, the first elastic elastic member 10 between the crossing portions X1 and X1 passes through the center part in the front-rear direction of the crotch portion 4, and the second elastic elastic member 11 between the crossing portions X1 and X1 is the predecessor. It is fixed so as to pass through the upper side of the crotch part 4 at around 1F. The same applies to the first modification. However, conversely, as in the pants-type disposable diaper P3 shown in FIGS. 6 and 7, the first elastic elastic member 14 between the crossing portions X3 and X3 passes over the crotch portion 4 in the back body 1B and crosses the X3. , X3, the second elastic expansion / contraction member 15 can pass through the center part in the front-rear direction of the crotch part 4. As a result, the center part in the width direction of the absorbent body 20 bulges outward between the first and second elastic elastic members 14 and 15 between the intersections X3 and X3, so that the stool is received on the rear side of the crotch part 4 of the absorbent body 20. Pocket B3 is formed.
[0037]
In this case, one of the first elastic elastic member 14 and the second elastic elastic member 15 between the intersections X3 and X3 can be cut.
[0038]
<Modification 3>
Further, as in the pants-type disposable diaper P4 shown in FIGS. 8 and 9, the first elastic elastic member 16 between the crossing portions X4 and X4 passes over the crotch portion 4 in the back body 1F and crosses the X4 and X4. It is also possible for the second elastic elastic member 17 in the middle to pass above the crotch portion 4 in the front body 1F. As a result, the central portion in the width direction of the absorbent body 20 bulges outward between the first and second elastic elastic members 16 and 17 between the intersections X4 and X4. Pocket B4 is formed.
[0039]
In particular, in this example, the distance between the second elastic elastic member 17 and the front waist elastic elastic member 41F fixed to the waist 40F of the front body is reduced. The front body 1F is not only uniformly pressed against the wearer side by the upward contraction force of the front waist elastic elastic member 41F, but is also applied to the first elastic stretch member 16 and the back body waist 40B. Since the distance from the fixed elastic member 41B around the back of the trunk is also shortened, the back body 1B is caused by the downward contraction force of the first elastic elastic member 16 and the upward contraction force of the elastic body elastic member 41B. As a result, the entire surface of the body can be uniformly pressed against the adherend side.
[0040]
Also in this case, one of the first elastic elastic member 16 and the second elastic elastic member 17 between the intersections X4 and X4 can be cut.
[0041]
【The invention's effect】
As described above, according to the present invention, it is possible to improve the fit of the absorbent body, make it difficult for gaps to occur around the legs, and improve the side leakage prevention performance.
[Brief description of the drawings]
FIG. 1 is a development view of an example of a pants-type paper diaper according to the present invention.
FIG. 2 is a front view of a pants-type paper diaper according to the present invention.
FIG. 3 is a bottom view thereof.
FIG. 4 is a development view of an example of a pants-type paper diaper according to Modification 1;
FIG. 5 is a bottom view thereof.
6 is a development view of an example of a pants-type paper diaper according to Modification 2. FIG.
FIG. 7 is a bottom view thereof.
FIG. 8 is a development view of an example of a pants-type paper diaper according to Modification 3.
FIG. 9 is a bottom view thereof.
10 is a development view of a pants-type paper diaper according to Conventional Example 1. FIG.
FIG. 11 is a development view of a pants-type paper diaper according to Conventional Example 2.
12 is a development view of a pants-type paper diaper according to Conventional Example 3. FIG.
[Explanation of symbols]
P1-P4 ... Pant type paper diapers, 1 ... Pants shaped sheet, 1F ... Front body, 1B ... Back body, 2FL ... Left waist side of the front body, 2FR ... Right waist side of the front body, 2BL ... Left of the back body Lumbar side, 2BR ... Right waist side of the back body, 3L ... Left leg circumference, 3R ... Right leg circumference, 3FL ... Front body left leg circumference, 3FR ... Rear body right leg circumference, 3BL ... Left body back Around the leg, 3BR ... around the right leg of the back body, 4 ... crotch, 10 ... first elastic elastic member, 11 ... second elastic elastic member, 20 ... absorber, 21 ... liquid-impervious backsheet, 22 ... absorbent material, 23 ... liquid-permeable top sheet, GL ... gathering around the left leg, GR ... gathering around the right leg, X1, X1 ... crossing points.

Claims (6)

A pant-shaped sheet that joins both the front and back body parts to form openings around both legs and waist, and the whole is fixed to the inner surface of this pant-shaped sheet. An absorbent body extending in the direction,
The absorbent body is obtained by sandwiching an absorbent material between a liquid-permeable top sheet having no opening and a liquid-impermeable back sheet ,
From the left waist side of the front body along the left leg around the front body, and further across the center of the absorbent material in the width direction and along the right leg of the front body to the right waist side of the front body, A first elastic elastic member fixed between a plurality of non-woven fabrics constituting a pant-shaped sheet;
From the left waist side of the back body along the left leg of the back body, and further across the center of the absorbent material in the width direction and along the right leg of the back body to the right waist side of the back body, a second elastically stretchable members which are fixed between a plurality of non-woven fabric that constitutes the shorts-shaped sheet has a,
In a pants-type paper diaper in which gathers are formed around the left leg and around the right leg by the first elastic stretch member and the second elastic stretch member;
The first elastic elastic member and the second elastic elastic member intersect at at least two points in the crotch portion, and the first elastic elastic member and the second elastic elastic member between these intersecting points. A pants-type disposable diaper characterized in that the member is separated by 4 cm or more. The first elastic elastic member between the intersections passes through the center part in the front-rear direction of the crotch part, and the second elastic elastic member between the intersections passes above the crotch part in the front body. The underpants type paper diaper according to Item 1. The first elastic elastic member between the intersections passes above the crotch part in the back body, and the second elastic elastic member between the intersections passes through the center part in the front-rear direction of the crotch part. The underpants type paper diaper according to Item 1. The first elastic elastic member between the intersections passes above the crotch part at the back body, and the second elastic elastic member between the intersections passes above the crotch part at the front body. The pants-type paper diaper according to claim 1. The underpants type paper diaper according to any one of claims 1 to 4, wherein any one of the first elastic elastic member and the second elastic elastic member between the intersections is cut. The pants-type disposable diaper according to any one of claims 1 to 5, wherein a third elastic elastic member is fixed around at least one of the front body and the back body.

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