JP4320269B2 - Disposable paper diapers - Google Patents

Description

  The present invention relates to a disposable paper diaper such as a tape type or a pants type, and more particularly, to an improvement of a disposable paper diaper that achieves an effect of preventing side leakage of body fluid by increasing a standing height of a standing cuff.

  Various types of disposable paper diapers are generally known, such as tape type and pants type, but there is not much difference in the basic configuration, and usually between a liquid-permeable top sheet and a liquid-impermeable back sheet. An absorbent main body composed of an absorbent element including an absorbent core interposed between the two is disposed on the surface (skin contact surface) side of a flexible outer sheet forming the outer shape of the product. And in order to prevent body fluids such as urine and loose stool from leaking out from around the legs in particular, standing leg cuffs protruding from the surface side are provided, and gathers are usually provided around the legs as necessary. It was done. However, with paper diapers that simply have standing cuffs and gathers around the legs in this way, it is actually difficult to reliably prevent side leakage of bodily fluids. .

In view of the above circumstances, the present applicant has proposed a paper diaper that has an effect of preventing the side leakage of body fluid by reliably increasing the standing height of the standing cuff. (See Patent Document 1)
7 is a plan view of the underpants-type disposable diaper 100 as an example, as viewed from the front side, FIG. 8 is a cross-sectional view taken along line XX in FIG. 7, and FIG. 9 is a cross-sectional view taken along line YY in FIG. .

  As shown in the drawing, this paper diaper 100 has an absorbent element AB formed by covering an hourglass-shaped absorbent core 13 with a crepe paper 14 between a rectangular liquid-permeable top sheet 11 and a liquid-impermeable back sheet 12. The absorbent main body 10 is integrated by adhering these members to each other with a hot melt adhesive or the like (indicated by an asterisk in the figure is an adhesive portion). It is made by adhering and fixing to the surface side. In the paper diaper 100, a liquid-permeable second sheet 11S is interposed between the liquid-permeable top sheet 11 and the absorbent element AB, and the fit around the waist is improved and the body fluid leaks out from the front-rear direction. In order to prevent this, a waist elastic elastic member 20 and a waist elastic elastic member 21 are provided.

  In the outer sheet 1 provided with the absorbent main body 10, the front body F and the back body B are folded around the crotch portion 4 in the post-production process, and both side edges 30 in the longitudinal direction are ultrasonically sealed or Bonded by means such as heat melting. As a result, the waist opening DO and the leg opening LO are formed, and thus the disposable diaper 100 is completed.

  In the paper diaper 100, in order to prevent body fluid from leaking out from the leg opening portion LO, an elastic elastic member made up of a standing sheet 40 and a plurality of thread rubbers which are continuous in the width direction as in the prior art. 50, a standing cuff B for leg surroundings projecting to the surface side (this standing cuff B is composed of a standing part B1 and a flat contact part B2) is formed, particularly as shown in FIGS. As described above, the elastic elastic member 60 for lifting is located on the center side of the standing end of the standing cuff B and is disposed on both sides of the absorbing element AB, and in the longitudinal direction of the absorbing element AB as shown in the plan view of FIG. It is different from the conventional general disposable diaper in that it is fixed along the stretched state.

  According to the paper diaper 100 having such a lifting elastic elastic member 60, as shown by the white arrow in FIGS. 8 and 9, in particular, FIG. 10, the elastic elastic member for lifting when the paper diaper 100 is mounted. Due to the contraction force of 60, both sides of the absorbent element AB are deformed to stand up toward the wearer's skin, and accordingly, the standing cuff B is interposed through the standing end on the outside of the elastic elastic member 60 for lifting. Since it is added to the standing portions on both sides of the absorbent element AB and rises, the standing height with respect to the skin is increased, the fitting property is enhanced, and side leakage is prevented.

  In Patent Document 1, the installation position of the elastic elastic member 60 for lifting is not limited to the position between the liquid-impermeable back sheet 12 and the absorbent element AB as shown in FIGS. Between the conductive top sheet 11 and the absorbent element AB or inside the absorbent core 13 in the thickness direction, and is not limited to the one shown in FIG. 11 in plan view, but as shown in FIG. It has been proposed to overlap with the entire longitudinal direction of the absorbent core 13 or along the side edge shape of the absorbent core 13 as shown in FIG.

However, in the paper diaper 100, the elastic elastic member 60 for lifting extends in the longitudinal direction of the absorbent main body 10 and is disposed so as to overlap the overhanging portion 13a of the absorbent core 13 having an hourglass shape. According to the present inventor, the contraction property of the elastic elastic member 60 for use is hindered by the absorbent core 13 having thickness and rigidity, and as a result, irregular overlap occurs in the overlapping portion and does not adhere to the wearer's skin. Turned out. In this way, if the overlapping part does not fit the wearer's skin, it is needless to say that a comfortable wearing feeling cannot be obtained, and there is a concern that body fluid leaks outside through the slack portion. Further, if the lifting elastic elastic member 60 provided at the corner does not function in this manner, at least the material cost of the lifting elastic elastic member 60 at this portion is wasted, and this may hinder the manufacturing cost of the disposable diaper 100. There was also the problem of bringing
JP 2001-190593 A

  The present invention has been made in view of the above-described circumstances, and the object of the present invention is to eliminate the disadvantages of the conventional disposable paper diaper described above, and to raise the standing height of the standing cuff while maintaining fit. Another object of the present invention is to provide an inexpensive disposable paper diaper that can more reliably prevent side leakage of body fluids by increasing it more reliably.

The above object of the present invention is to provide a flexible structure in which an absorbent main body comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent element including an absorbent core interposed between the sheets forms the outer shape of the product. It is arranged on the skin side of the outer sheet, wherein the absorbent main has a constriction part at the leg portion, at least the elastic lifting along the longitudinal direction at a position on the absorbent main body adjacent to the absorbent element in leg portion In a disposable paper diaper provided with an elastic member and having standing cuffs standing on both sides of the absorbent main body in the longitudinal direction on the skin side, the elastic elastic member for lifting is composed of a plurality of thread rubbers and the thread rubber and wherein the disposed only on constricted portion of the absorbent main body in the leg part, and that formed by setting a long way things widthwise outer than the length of the thread rubber in the width direction inside the It is achieved by providing a that disposable diapers.

According to another aspect of the present invention, there is provided a disposable paper diaper characterized in that the constricted portion has a trapezoidal shape in which the planar shape has an upper bottom in the width direction and a lower bottom in the width direction . Achieved more effectively.

Furthermore , the object of the present invention is to form an outer shape of a product, wherein an absorbent main body comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent element including an absorbent core interposed between the sheets. Arranged on the skin side of the flexible outer sheet, the absorbent main body has a constricted portion at a leg periphery portion, and at least along the longitudinal direction at a position on the absorbent main body adjacent to the absorbent element at the leg peripheral portion. In a disposable paper diaper provided with a lifting elastic elastic member and having standing cuffs standing on both sides of the absorbent main body in the skin side longitudinal direction, the lifting elastic elastic member is made of a sheet material having elasticity. In addition, the constricted portion is formed in a trapezoidal shape in which the planar shape has an upper bottom in the width direction and a lower bottom in the width direction, and the sheet material is disposed only in the trapezoidal constricted portion. It is accomplished by providing a disposable paper diaper characterized by Rukoto.

  As described above, the disposable paper diaper according to the present invention is configured so that the elastic elastic member for lifting is disposed only at the constricted portion of the absorbent core in the region around the leg, and does not overlap the protruding portion of the absorbent core. Therefore, according to the disposable paper diaper according to the present invention, since the overhanging portion of the absorbent core is not hindered by the expansion and contraction action of the elastic elastic member for lifting, the overhanging portion can be brought into close contact with the wearer's skin, In addition, since the height of the standing cuff can be more reliably increased, the standing cuff can be brought into close contact with the periphery of the leg, thereby preventing the side leakage of the body fluid more reliably.

  Further, the disposable paper diaper according to the present invention is located at a position where the elastic elastic member for lifting does not overlap the absorbent core at both ends of the absorbent main body and is continuously disposed in the longitudinal direction of the absorbent main body. Similar effects can be obtained.

  Furthermore, since the amount of the elastic elastic member for lifting can be reduced as compared with the conventional paper diaper, the manufacturing cost of the paper diaper can be reduced.

  Hereinafter, the content of the present invention will be described in detail based on preferred embodiments. In addition, this invention is not necessarily limited to the following embodiment, and it cannot be overemphasized that the structure can be variously changed in the range which does not deviate from a claim.

  FIG. 1 shows a first embodiment of the present invention. Specifically, a plan view of a pants-type disposable paper diaper (hereinafter referred to as “paper diaper”) 100A developed from the front side is shown. 2 shows an XX sectional view of FIG. 1, and FIG. 3 shows a YY sectional view of FIG. Since the other components of the present paper diaper 100A are substantially the same as those of the conventional paper diaper 100 except for the configuration of the elastic elastic member for lifting 60A described later, the following are the same as the common components. A description will be given with reference numerals.

  Similar to the paper diaper 100, the present paper diaper 100 </ b> A is an absorption formed by covering an hourglass-shaped absorbent core 13 with a crepe paper 14 between a rectangular liquid-permeable top sheet 11 and a liquid-impervious back sheet 12. The absorbent main body 10A integrated with the element AB interposed therebetween and bonded to each other with a hot melt adhesive or the like (indicated by * in the figure is an adhesive portion) is a flexible outer shape. Adhering and fixing to the surface side of the sheet 1, a liquid-permeable second sheet 11S is interposed between the liquid-permeable top sheet 11 and the absorbent element AB, and also improves body fit and improves body fluid. The waist elastic elastic member 20 and the waist elastic elastic member 21 are provided for the purpose of preventing leakage from the front-rear direction of the body. Further, in order to prevent body fluid from leaking out from the opening LO around the legs, the width Standing cuffs B for leg leg projecting to the surface side by the standing seat 40 and the plurality of elastic elastic members 50 which are continuous in the direction (this standing cuff B is composed of the standing part B1 and the flat contact part B2). Is formed.

  Here, the outer sheet 1 is formed by laminating two nonwoven fabrics having air permeability and water repellency.

  The absorbent main body 10A includes a liquid-permeable top sheet 11 made of a rectangular nonwoven fabric or the like that directly touches the wearer's skin, an hourglass-shaped absorbent core 13 mainly composed of cotton-like pulp and having a certain degree of rigidity, and the entire upper and lower surfaces thereof. An absorbent element AB composed of crepe paper 14 for covering the sheet, and a rectangular liquid-impermeable back sheet 12 composed of a polyethylene plastic film or the like that wraps around from the back surface to the surface side of the absorbent element AB and covers both sides of the surface. Bonded and integrated with hot melt adhesive.

  The standing cuff B is formed of a standing sheet B that is formed in a double layer, and that stands up toward the center of the product, and a planar contact part B2 that is folded and reversed halfway toward the outside.

  In this paper diaper 100A, as shown in FIG. 1 with a partially broken cross section and as shown in a cross sectional view in FIG. 3, a single elastic elastic member 60A made of thread rubber or the like is a constricted portion of the absorbent main body 10A at the leg periphery portion. 10a is provided only. (That is, in the paper diaper 100A, the lifting elastic elastic member 60A is not disposed on the overhanging portion 13a of the absorbent core 13 having an hourglass shape unlike the conventional paper diaper 100.) The lifting elastic elastic member 60A. The arrangement position in the cross-sectional direction is set between the liquid-impermeable back sheet 12 and the absorbent element AB as shown in FIG.

  Here, a thread-like elastic rubber made of styrene rubber, olefin rubber, urethane rubber, polyurethane, polystyrene, or the like is preferably used as the material for the elastic elastic member for lifting 60A.

  According to the present paper diaper 100A configured as described above, when worn, like the case of the conventional paper diaper 100, both sides of the absorbent element AB are deformed by the contraction force of the elastic elastic member 60A for lifting around the leg. As a result, the standing cuff B is added to the standing portions on both sides of the absorbent element AB through the standing end on the outer side of the elastic elastic member 60A for lifting. Since it comes to stand, the standing height with respect to the skin is increased, the fitting property is increased, and side leakage is prevented.

  At this time, in the present paper diaper 100A, as described above, the elastic elastic member 60A for lifting is disposed only in the constricted portion 10a of the absorbent main body 10A and not disposed in the overhanging portion 13a of the absorbent core 13. The protruding portion 13a of the core 13 is not deformed such as slack. For this reason, according to this paper diaper 100A, a body fluid does not leak sideways from the overhang | projection part 13a, Furthermore, a comfortable fit can be given to a wearer.

  Moreover, since the extra elastic elastic member 60A for lifting can be saved, the manufacturing cost of the paper diaper 100A can be reduced.

  FIG. 4 shows the second embodiment of the present invention. Specifically, FIG. 4 is a plan view in which only the absorbent main body 10B, which is the main part thereof, is developed and the right half is cross-section viewed from the surface side. .

  The absorbent main body 10B includes two lifting elastic elastic members 60B made of the material as described above and disposed in the constricted portion 10a of the absorbent main body 10B. In order to increase the standing height, it is preferable that one of the two elastic elastic members 60B for lifting is disposed so as to be positioned below the standing cuff B. The number of lifting elastic elastic members 60B used is not limited to two, and the number may be increased as necessary, and the installation position of the lifting elastic elastic members 60B in the cross-sectional direction is an impermeable back sheet. For example, this may be set between the liquid-permeable top sheet 11 and the absorbent element AB.

  The same effect as described above can also be obtained by the present paper diaper 100 </ b> B (not shown) including the absorbent main body 10 </ b> B.

  FIG. 5 shows a third embodiment of the present invention. Specifically, as in the second embodiment, only the absorbent main body 10C, which is the main part, is developed, and the right half is taken as a cross section. It is the top view seen from the side.

  The absorbent main body 10C is formed by disposing a sheet material 60C having elasticity in a constricted portion 10a of the absorbent main body 10C, that is, a region indicated by hatching in FIG.

  For example, a urethane film or a urethane foam sheet is preferably used as the stretchable sheet material 60C, but there is no particular limitation as long as it is a stretchable sheet material.

  The same effect as described above can also be obtained by the present paper diaper 100C (not shown) provided with the absorbent main body 10C.

  The disposable paper diapers according to the first to third embodiments described above are those in which the elastic elastic members for lifting are arranged only at the constricted portion of the absorbent main body at the leg periphery portion. The disposable paper diaper according to the invention may be obtained by changing the position of the elastic elastic member for lifting as follows.

  FIG. 6 shows a fourth embodiment of the present invention. Specifically, as in the above-described embodiments, only the absorbent main body 10D, which is the main part, is developed, the right half is taken as a cross section, and the surface side is shown. It is the top view seen from.

  The absorbent main body 10D is in a position where one (or plural if necessary) lifting elastic elastic member 60D made of the above-described material does not overlap the absorbent core 13a at both ends of the absorbent main body 10D. The main body 10D is continuously arranged in the longitudinal direction.

  In this way, the same elastic diaper 100D (not shown) in which the elastic elastic member 60D for lifting is disposed at a position other than the constricted portion of the absorbent main body 10D so as not to overlap the absorbent core 13a in plan view. An effect can be obtained.

  The present invention can be applied not only to a pants-type disposable paper diaper but also to other absorbent articles such as a tape-type paper diaper.

It is an expansion | deployment top view of the paper diaper concerning the 1st Embodiment of this invention. It is XX sectional drawing of FIG. It is YY sectional drawing of FIG. It is an expansion | deployment top view of the principal part of the paper diaper concerning the 2nd Embodiment of this invention. It is an expansion | deployment top view of the principal part of the paper diaper concerning the 3rd Embodiment of this invention. It is an expansion | deployment top view of the principal part of the paper diaper concerning the 4th Embodiment of this invention. It is an expansion | deployment top view of the conventional paper diaper. It is XX sectional drawing of FIG. It is YY sectional drawing of FIG. It is operation | movement explanatory drawing of the standing cuff in the conventional paper diaper. It is a top view which shows the arrangement structure of the elastic elastic member in the conventional paper diaper. It is a top view which shows the other arrangement structure of the elastic elastic member in the conventional paper diaper. It is a top view which shows other arrangement structure of the elastic expansion-contraction member in the conventional paper diaper.

Explanation of symbols

1. External sheet 10, 10A , 10B, 10C, 10D Absorbent main body 11 Liquid-permeable top sheet 12 Liquid-impervious back sheet 13 Absorbing core 13a Overhanging portion 40 Standing sheet 50 Elastic elastic members 60, 60A, 60B, 60C, 60D Elastic elastic member for lifting B Standing cuff AB Absorbing element

Claims (3)

An absorbent main body composed of a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent element including an absorbent core interposed between the sheets is disposed on the skin side of the flexible external sheet that forms the external shape of the product. is, the absorbing entity has a constriction part at the leg portion, the resilient and elastic members for lifting along the longitudinal direction is provided at a position on the absorbent main body adjacent to the absorbent element at least the leg portion, wherein In a disposable paper diaper provided with standing cuffs standing in the longitudinal direction on the skin side on both side portions of the absorbent main body, the elastic elastic member for lifting is composed of a plurality of thread rubbers, and the thread rubber is only the constricted portion of the absorbent main body is disposed, and wherein the length of the thread rubber formed by setting a long way things widthwise outer than the widthwise inward disposable diapers The disposable paper diaper according to claim 1, wherein the constricted portion has a trapezoidal shape in which a planar shape has an inner bottom in the width direction and a lower bottom in the width direction . An absorbent main body composed of a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent element including an absorbent core interposed between the sheets is disposed on the skin side of the flexible external sheet that forms the external shape of the product. The absorbent main body has a constricted portion at a leg-surrounding part, and an elastic elastic member for lifting is provided along the longitudinal direction at a position on the absorbent main body adjacent to the absorbent element at least in the leg-surrounding part, In a disposable paper diaper provided with standing cuffs standing in the longitudinal direction on the skin side on both side portions of the absorbent main body, the elastic elastic member for lifting is made of a stretchable sheet material, and the constricted portion has a flat shape in width. disposable paper is characterized by being provided only to form the widthwise outer side and the inward and the upper base to the trapezoidal shape of the lower base, and the sheet material to the constriction portions of the trapezoidal Contact One.

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