JP4091784B2 - Pants-type diaper that can prevent slipping down - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a disposable diaper, and more particularly to a pants-type diaper that can be prevented from slipping down when worn.
[0002]
[Prior art]
Conventionally, disposable diapers have been used as infant diapers and the like.
As such a disposable diaper, it is extremely important to fit the wearer's waist and abdomen and to have excellent retention.
[0003]
In general, since infants have soft skin, slipping easily occurs when the fit is poor.
In particular, after excretion of urine or the like when wearing a diaper, the crotch part naturally becomes heavy by absorbing the liquid.
As a result, the diaper itself cannot support the entire weight and falls downward.
In an extreme case, the excrement adheres to the thighs.
In order to compensate for such drawbacks, many contrivances have been made to prevent the diaper itself from slipping down.
[0004]
For example, Japanese Patent Application Laid-Open No. 10-127687 employs a structure in which an abdomen elastic elastic member is provided at the front body to tighten the abdomen, and a buttock elastic elastic member is provided at the back body to tighten the buttocks, and the lowering Techniques for prevention are disclosed.
As described above, there are several other things that use gathers to increase the tightening force of the abdomen and buttocks and expect a slip-down prevention function.
However, preventing the slippage by increasing the tightening force on the body may adversely affect the wearability, and is not necessarily the optimum method.
[0005]
Here, FIG. 9 and FIG. 10 are drawings showing the conventional pants-type diaper, FIG. 9 is a schematic front view, and FIG. 10 is a development view of a blank before three-dimensionalization of the pants-type diaper. It is.
[0006]
11 shows a schematic front view (A) and a schematic side view (B) of a state immediately after wearing the diaper shown in FIG. 9, and FIG. 12 shows a state after the diaper shown in FIG. A schematic front view (A) and a schematic side view (B) are shown.
[0007]
In the pants-type diaper of this form, the upper end lines of the rear body B and the front body A of the waist opening are linear.
Assuming the case where a pants-type diaper is worn, immediately after wearing, it is in a state of enveloping the torso as shown in FIG. 11, and there is no problem.
However, while being used, the abdomen gather AG portion of the front body A is maintained as it is, but the upper end of the opening, that is, the waist region WG which is the upper end region of the front body A is shifted downward. (See FIG. 12).
In other words, the upper end region of the front body A that is in contact with the soft abdomen is dropped by moving the waist and legs during use.
[0008]
However, since the abdominal gather AG portion is relatively difficult to shift downward, a phenomenon that the falling upper end region sinks under the abdominal gather AG occurs.
It can be understood from FIG. 12 (B) that the upper end region has fallen and has entered under the abdominal gather AG. In such a state, the space between the upper end region of the front body A and the abdomen gather AG is loosened and floats, and a space is created between the skin.
For this reason, the fit property is lowered, and furthermore, the entire diaper is displaced downward. Therefore, in the conventional pants-type diaper with enhanced tightening force, it has been difficult to prevent the diaper from slipping down.
[0009]
[Problems to be solved by the invention]
The present invention is intended to solve the above problems.
That is, the objective of this invention is providing the underpants type diaper which can prevent the slippage fall after wearing reliably.
Furthermore, it is providing the underpants type diaper which can prevent the fall of the fitting property by the upper end area | region of the front body A falling and sinking under a gather part.
[0010]
[Means for Solving the Problems]
Thus, as a result of intensive studies based on such a background, the present inventors have formed the shape of the upper end line of the back body B constituting the pant-type diaper into a convex curve, and this convex shape. It has been found that by providing an elastic stretchable member along a curved line, a suspension support force that prevents the elastic member from falling down is generated, and the present invention has been completed based on this finding.
[0012]
That is, the present invention comprises (1) a front body, a back body, and a crotch part positioned between the two. At least the crotch is provided with an absorber, and the front body and the back body are joined to each other at both sides. Thus, a pant-type diaper in which a waist opening and both leg openings are formed, and the upper end line of the back body forms a convex curve in the waist opening, and the convex curve A pants-type diaper having an elastic elastic member along the upper end line of the front body forms a concave curve, and an elastic elastic member along the concave curve, the convex curve same direction buttocks gather is provided by resilient and elastic members, and the concave curve and by abdominal gathers provided by resilient and elastic members in the same direction, the pants-type diaper supporting function by back body upper end is given as Exist for.
Thus, in the waist opening, the upper end line of the back body forms a convex curve, and since the elastic elastic member is provided along this convex curve, when the pants-type diaper is worn, The waist part gather WG of the back body B exhibits the effect | action which suspends and supports the whole underpants type diaper, As a result, it becomes possible to prevent that a diaper falls down.
Further, since the upper end line of the front body is formed in a concave curve in this way, in addition to the suspension support force by the waist gathers on the back body, it acts to push up the abdomen so as to fit the shape of the abdomen.
[0013]
And ( 2 ), in the upper end line of a back body, the uppermost position of a convex curve exists in the underpants type diaper of the said (1) description currently formed in the back body center part.
As described above, since the uppermost position of the upper end line is formed at the center part of the front body, the right and left suspension force can be accurately exhibited.
[0014]
And ( 3 ), in the upper end line of a front body, the bottom position of a concave curve exists in the underpants type diaper of the said (1) description currently formed in the front body center part.
In this way, the lowest position of the upper end line is formed at the center of the front body, so that the force that pushes up right and left evenly is accurately exhibited.
[0016]
And ( 4 ), it exists in the underpants type diaper of the said (1) description whose vertical width of the rear waist part of a back body is 120 to 250% of the vertical width of the front waist part of a front body.
[0017]
The present invention may employ a configuration in which two or more selected from the above 1-4 are combined as long as the purpose is met.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on the drawings with specific embodiments.
The pants-type diaper of the present invention is characterized in that the upper end line of the back body B is formed in a convex curve upward, and the elastic stretchable member S is disposed along the convex curve (that is, along the upper end line BL). Thus, a support function by the upper end of the back body is provided.
[0019]
[First Embodiment]
FIG. 1 is a schematic front view showing a pants-type diaper according to an embodiment of the present invention. FIG. 2: shows the expanded view of the blank before making the underpants type diaper three-dimensional in embodiment of this invention.
[0020]
The pants-type diaper includes a front body A, a back body B, and a crotch C positioned between the two. And at least the crotch part C of the pants-type diaper is provided with an absorber (not shown) in the central region.
Here, the absorber usually has a structure in which defibrated pulp and a superabsorbent polymer are wrapped in a water-permeable tissue. And the absorber is attached in the state interposed between the liquid-permeable surface sheet which is not illustrated, and a liquid-impermeable back surface sheet.
[0021]
Here, the front body A is in contact with the abdomen, and the back body B is in contact with the buttocks (waist). By joining (fixing) the front body A and the back body B on both sides, a three-dimensional underpants type diaper in which the waist opening 1 and both leg openings 2 are formed is formed.
[0022]
The front body A, the back body B, and the crotch C are provided with an absorber at least at the crotch, and for example, a barrier cuff (not shown) is formed in the longitudinal direction along both end lines of the absorber.
This barrier cuff is made of a liquid-impermeable sheet, and can be erected in a gathered shape by installing an elastic elastic member on the standing free edge.
The barrier cuff prevents liquid such as urine absorbed by the absorber from leaking outward from the crotch due to the elasticity.
[0023]
The upper end line BL of the back body B is formed in a convex curve, and its uppermost position is formed at the center of the back body B.
At the same time, a plurality of elastic elastic members S (for example, made of natural rubber, synthetic rubber, etc.) are fastened along the upper end line BL of the back body B to form a so-called gather (“waist gather WG”). .
[0024]
Further, in the back body B, a collar gathering BG using the elastic elastic member S is formed in a straight line at the lower part of the waist gathering WG.
Thus, in the waist opening 1, the upper end line BL of the back body B is formed in a convex curve, and the elastic elastic member S is disposed along the convex curve, so that the skin surface of the waist As the area of the upper end region in contact with the waist increases, the waist part gather WG of the back body B exerts an action of supporting the entire pants-type diaper, and as a result, it is possible to prevent the diaper from slipping down. (Support function).
[0025]
That is, since the waist part gather WG of the back body B acts so as to suspend and support the entire pants-type diaper from above, the lower part of the front body A, particularly the upper end line AL, can be avoided. In addition, since the uppermost position of the convex curve is formed at the center part of the back body, the right and left suspension force can be accurately exhibited.
As described above, the holding power for the wearer is surely increased in the case of the present invention as compared with the case where the upper end line of the rear body is linear.
[0026]
In more detail, the advantage at the time of wearing the underpants type diaper of this invention is described.
3 (A) and 3 (B) are views showing a state immediately after wearing the pants-type diaper of the present invention, (A) is a schematic front view, and (B) is a schematic side view.
[0027]
4 (A) and 4 (B) are views showing a state after a predetermined time has elapsed after wearing the pants-type diaper of the present invention, (A) is a schematic front view, and (B) is a schematic side view. Show.
[0028]
Immediately after wearing the pants-type diaper of this form, it exists in the state which wraps a waist | hip | lumbar part exactly as shown in FIG.
Assume that the torso and legs are moved and used.
The upper end line BL of the back body B is formed in a convex curve, and the elastic member S is provided along the upper end line BL to form the waist part gathering WG. (See arrow in (B)).
And it can be supported by the waist part gathering WG of the back body B, and the suspension support force can be exhibited largely as a whole.
[0029]
As a result, the upper end region of the front body A is not lowered, and the front body A is just pulled up obliquely upward by the rear body B.
Therefore, unlike the conventional case, the phenomenon that the upper end region of the front body A falls downward and sinks under the abdomen gather AG does not occur at all.
Therefore, naturally, the portion between the upper end line AL of the front body A and the abdomen gather AG is loosened and floats up, so that there is no space between the skin and the skin.
[0030]
By the way, as shown in FIG. 2, the rear waist part B1 and the front waist part A1 which are described below are formed in the upper end area of the back body B and the upper end area of the front body A in the underpants type diaper of the present invention. However, by prescribing the length relation of the vertical widths of these waist portions (below), in particular, the holding force against slippage is very effective.
[0031]
That is, the ratio of the maximum width of the rear waist portion B1 (that is, “the vertical width L1 of the rear waist portion B1”) to the maximum width of the front waist portion A1 (that is, “the vertical width L2 of the front waist portion A1”) [L1 / L2 × 100 (%)] is preferably 120 to 250%, particularly preferably 130 to 180%, from the viewpoint of the effect of preventing misalignment by experiments or the like.
In addition, front waist part A1 says the area | region between the line (PQ) which connects the junction part lower end of the both sides of front body A and back body B, and the upper end of front body A, and rear waist part B1 The area between the line (PQ) connecting the joint lower ends of the both sides of the front body A and the rear body B and the upper end of the rear body B is referred to.
[0032]
[Second Embodiment]
In this embodiment, the upper end line BL of the back body B is formed in a convex curve, and the waist part gather WG is also formed in a curve along the line. This is the same as the first embodiment described above.
In addition, unlike the first embodiment, the upper end line AL of the front body A is formed with a concave curve, and a waist part gather WG provided with a plurality of elastic elastic members S along the upper end line AL. Is formed.
[0033]
FIG. 5: is a schematic front view which shows the underpants type diaper in this 2nd Embodiment, FIG. 6: shows the expanded view of the blank before making the underpants type diaper three-dimensional in 2nd Embodiment.
[0034]
According to such a pants-type diaper of the present invention, in addition to the suspension support force by the waist gathers WG of the back body B, the upper end line AL of the front body A is formed in a concave curve so as to fit the shape of the abdomen. Therefore, it acts to push up the abdomen, and the upper end region of the front body A is prevented from slipping downward.
In particular, since the abdomen is soft in the case of an infant, the upper end line AL is extremely effective because it supports it so as to hold it.
In addition, since the lowest position of the upper end line AL of the concave curve of the front body A is formed at the central portion of the front body A, the force to push up right and left evenly is exhibited accurately.
[0035]
[Third Embodiment]
In this embodiment, the upper end line BL of the back body B is formed in a convex curve, the upper end line AL of the front body A is formed in a concave curve, and the waist gathers WG are also along the respective lines. It is the same as the second embodiment described above in that it is formed in a curved line.
In addition, the elastic elastic member S is disposed in the waist so as to be in the same direction as the curved line of the upper end line BL of the back body B and the upper end line AL of the front body A, so that the curved front body A An abdomen gather AG and a buttocks gather BG of the back body B are formed.
[0036]
FIG. 7: is a schematic front view which shows the underpants type diaper in this 3rd Embodiment, FIG. 8: shows the expanded view of the blank before three-dimensionalizing the underpants type diaper in 3rd Embodiment.
According to such a pant-type diaper of the present invention, the effect of pushing up the abdomen by the abdomen gather AG and the effect of lifting the buttock by the buttocks gather BG are further enhanced, and the fit to the wearer is more excellent, so the effect is more sure. Can demonstrate.
The degree of the curve curve can be set and changed as appropriate.
[0037]
Although the present invention has been described above, the present invention is not limited to the embodiments, and it goes without saying that other various modifications are possible without departing from the essence thereof.
For example, the number of elastic elastic members S for forming the waist gather WG, the abdomen gather AG, and the buttocks gather BG is shown as two in the embodiment for convenience, but the number can be selected as appropriate.
In addition, the position where the gather is provided can be selected as appropriate.
Moreover, the convex curve of the upper end line of the back body can be adopted as long as it has a supporting function even when it has a plurality of convex shapes.
Furthermore, it goes without saying that the diaper of the present invention can be applied to all age groups including not only infants but also elderly people.
[0038]
【The invention's effect】
When the pants-type diaper is worn, the upper end line BL of the back body B of the waist opening 1 is formed in a convex curve, and the elastic elastic member S is provided along the upper end line. The waist part gather WG of the body B exhibits the effect | action which suspends and supports the whole underpants type diaper, and can prevent the slippage of a diaper reliably.
[0039]
Therefore, the upper end region of the front body A does not fall and sink under the abdomen gather AG unlike the conventional case.
Further, since the upper end line AL of the front body A is formed in a concave curve, the suspension support force of the rear body B is more effectively exhibited in combination with pushing up the abdomen by the upper end of the rear body.
[Brief description of the drawings]
FIG. 1 is a schematic front view showing a pants-type diaper according to an embodiment of the present invention.
FIG. 2 is a development view of a blank before three-dimensionalization of a pant-type diaper according to an embodiment of the present invention.
FIGS. 3A and 3B are views showing a state immediately after wearing the pant-type diaper of the present invention, wherein FIG. 3A is a schematic front view, and FIG. 3B is a schematic side view.
FIGS. 4A and 4B are diagrams illustrating a state after wearing a pants-type diaper according to the present invention after a certain period of time. FIG. 4A is a schematic front view, and FIG. 4B is a schematic side view.
FIG. 5 is a schematic front view showing another example of the pants-type diaper of the present invention.
FIG. 6 is a development view of a blank before three-dimensionalization in another example of the pant-type diaper of the present invention.
FIG. 7 is a schematic front view showing another example of the pants-type diaper of the present invention.
FIG. 8 is a development view of a blank before three-dimensionalization in another example of the pant-type diaper of the present invention.
FIG. 9 is a schematic front view showing a conventional pant-type diaper.
FIG. 10 is a development view of a blank before three-dimensionalization in a conventional pant-type diaper.
11A and 11B are views showing a state before a conventional pant-type diaper is mounted, in which FIG. 11A is a schematic front view, and FIG. 11B is a schematic side view.
FIGS. 12A and 12B are diagrams showing a state in which a conventional pant-type diaper is worn and a predetermined time has elapsed, in which FIG. 12A is a schematic front view and FIG. 12B is a schematic side view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Waist opening 2 ... Leg opening A ... Front body B ... Rear body C ... Crotch lower part A1 ... Front waist part B1 ... Rear waist part AL ... Upper end line BL of front body ... Upper end line AG of rear body ... Abdominal gather BG ... Gathered WG ... Waist Gather S ... Elastic elastic member

Claims (4)

It consists of a front body, a back body, and a crotch part located between the two. At least a crotch part is provided with an absorber, and the front body and the back body are joined to each other at both sides, thereby opening the waist opening and both leg openings. A pant-type diaper formed with a portion, wherein the upper end line of the back body forms a convex curve at the waist opening, and an elastic elastic member is provided along the convex curve, And the upper end line of the front body forms a concave curve, and is a pants-type diaper provided with an elastic elastic member along the concave curve ,
A collar gathering by an elastic elastic member is provided in the same direction as the convex curve, and an abdomen gathering by an elastic elastic member is provided in the same direction as the concave curve, and a support function by the upper end of the back body is provided . Pants-type diaper characterized by. In the upper end line of the back body, pant diaper according to claim 1, wherein the uppermost position of the convex curve is formed on the back body central portion. In the upper end line of the front body, pant diaper according to claim 1, wherein the lowermost position of the concave curve is formed in the front body center portion. Pant diaper according to claim 1, wherein a vertical width of the waist portion of the rear body is a 120 to 250% of the height of the front waist portion of the front body.

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