CN1853592B - Disposable napkin - Google Patents

Disposable napkin Download PDF

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Publication number
CN1853592B
CN1853592B CN2006100755172A CN200610075517A CN1853592B CN 1853592 B CN1853592 B CN 1853592B CN 2006100755172 A CN2006100755172 A CN 2006100755172A CN 200610075517 A CN200610075517 A CN 200610075517A CN 1853592 B CN1853592 B CN 1853592B
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width
leg
pair
flap parts
diaper
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CN1853592A (en
Inventor
奥田泰之
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Kao Corp
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Kao Corp
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Abstract

The invention discloses a napkin (1), which is characterized by the following: a couple of leg wing (5, 5) with elastic component (51) is set on two lateral parts of absorbent (4) along longitude direction; the back sheet (3) is allocated between two ends along napkin length direction; the component (51) of wing part (5) is allocated near external end of wing (5) breadth direction, which doesn't form overlapping structure; a couple of extension part (7, 7) along breadth direction is allocated on two lateral parts of back part B, whose extension region lies out of allocating direction of wing (5) to approach one lateral position of sheet (3) based on positive sheet (2) awes datum direction; the extension part (7) connects the sheet (3); the belt (13) is projected toward external end breadth direction of extension part (7); the center part of non-contact side with component (51) in the wing (5) is covered.

Description

Disposable diaper
Technical field
The present invention relates to disposable diaper, particularly have the disposable diaper of leg flap parts.
Background technology
In the past, the disposable diaper with leg flap parts was widely known by the people.This diaper has disposed the pair of leg alar part along the both sides of the length direction of diaper, in the outside of this leg flap parts, has formed folding (fold) by lower limb rivel (leg gather).
Use this disposable diaper, when dressing diaper to the child, the folding meeting of the lower limb rivel in the leg flap parts of diaper enters into the inboard of diaper, if keep this state, in the use of diaper, the situation that urine spills from leg flap parts might take place then.Therefore, the head of a family etc. must draw out the folding of lower limb rivel of shank the outside of diaper and adjust taking a lot of trouble when causing the wearing diaper when dressing diaper to the child.
In addition, known a kind of disposable diaper, wherein, the elastomeric element that forms the lower limb rivel in the leg flap parts is configured near the end in the diaper width outside of this leg flap parts.
For example, show to disclose in the 2002-522117 communique a kind of disposable diaper, wherein, among a plurality of elastomeric elements that leg flap parts had, be positioned near the end in the width outside that the outermost elastomeric element of diaper width is configured in leg flap parts the spy.
In addition, also disclose a kind of disposable diaper in the flat 8-508657 communique of special table, among a plurality of elastomeric elements that wherein leg flap parts had, be positioned near the end in the width outside that the outermost elastomeric element of diaper width is configured in leg flap parts.Non-skin contact one side of the length direction middle body of the leg flap parts of this diaper is not covered by the leakproof sheet material.
In the diaper of said structure, the elastomeric element that forms the lower limb rivel in the leg flap parts is configured near the end in the diaper transverse direction outside of this leg flap parts, does not therefore have in the outside of this leg flap parts or does not almost form folding.So when dressing diaper to the child, the folding inboard that can not enter into diaper of the lower limb rivel in the leg flap parts of diaper need not be adjusted around the diaper when dressing diaper, so can promptly dress.
, because the activity of diaper user, the leg flap parts lower limb rivel of above-mentioned diaper moves and is absorbed in pars inguinalis easily in crotch portion, and stitches direction to buttocks easily at buttocks and move, so produced new problem.Its result, the fit of diaper descends, but also becomes the reason of seepage.
It the reasons are as follows described: have at leg flap parts under the folding situation of lower limb rivel, folding meeting forms resistance, prevent moving of leg flap parts, but do not have or almost not have to form under the folding situation, because the activity of diaper user causes leg flap parts to become easy to be mobile at leg flap parts.
In addition, in the diaper user mode that the spy shows to put down in writing in the flat 8-508657 communique,,, urine spills from leg flap parts so might taking place because non-skin contact one side of leg flap parts is not covered by the leakproof sheet material at the middle body of diaper length direction.
Summary of the invention
The invention provides disposable diaper, it has face sheet, back-sheet and the absorber between two sheet materials, both sides along the length direction of this absorber are provided with a pair of leg flap parts with elastomeric element, above-mentioned back-sheet runs through between the both ends of diaper length direction and disposes, the above-mentioned elastomeric element of above-mentioned pair of leg alar part is configured near the end in the width outside of this pair of leg alar part or its, the width outside at above-mentioned elastomeric element, do not have or almost do not form folding that above-mentioned leg flap parts relies and form, the both sides of the waistline portion in drosal part are provided with a pair of width pars contractilis, stretching region in this a pair of width pars contractilis is present in the width outside that direction and this set direction that sets of above-mentioned leg flap parts respectively, with the benchmark of above-mentioned face sheet as thickness direction, above-mentioned a pair of width pars contractilis is configured in the position of more leaning on above-mentioned back-sheet one side than above-mentioned pair of leg alar part, above-mentioned a pair of width pars contractilis engages with above-mentioned back-sheet, restraint zone is to be arranged on the width outboard end of this width pars contractilis to the outstanding mode of diaper width, non-skin contact one side of the part that above-mentioned elastomeric element disposed in the above-mentioned pair of leg alar part is covered by above-mentioned back-sheet partly at the middle body of this leg flap parts length direction.
Description of drawings
Fig. 1 is the axonometric chart under the naturalness of the 1st embodiment of diaper of the present invention.
Fig. 2 is the expansion plane graph of diaper under extended state of the 1st embodiment of Fig. 1.
Fig. 3 is the I-I amplification profile that schematically illustrates the 1st embodiment of Fig. 2.
Fig. 4 is the II-II amplification profile that schematically illustrates the 1st embodiment of Fig. 2.
Fig. 5 is the exploded perspective view that schematically illustrates the diaper of the 1st embodiment.
Fig. 6 be schematically illustrate diaper of the present invention the 2nd embodiment under the diaper extended state corresponding to the profile of Fig. 3.
Fig. 7 is the exploded perspective view that schematically illustrates the diaper of the 2nd embodiment.
Fig. 8 be schematically illustrate diaper of the present invention the 3rd embodiment under the diaper extended state corresponding to the profile of Fig. 3.
Fig. 9 be schematically illustrate diaper of the present invention the 4th embodiment under the diaper extended state corresponding to the profile of Fig. 3.
Figure 10 is the exploded perspective view that schematically illustrates the diaper of the 5th embodiment.
Figure 11 is the expansion plane graph under the extended state of the 6th embodiment of diaper of the present invention.
Figure 12 is the III-III amplification profile that schematically illustrates the 6th embodiment of Figure 11.
Figure 13 is the exploded perspective view that schematically illustrates the diaper of the 6th embodiment.
The specific embodiment
The present invention relates to disposable diaper, wherein, the elastomeric element that forms the lower limb rivel in the leg flap parts is configured near the end in the diaper transverse direction outside of this leg flap parts or its, prevented that thus leg flap parts enters into the diaper inboard when diaper uses, prevented moving of when diaper uses leg flap parts simultaneously, the high seepage that also prevented of fit.
Below, with reference to Fig. 1~Fig. 5 a preferred embodiment of disposable diaper of the present invention is described.
The disposable diaper 1 of the 1st embodiment is the flat type disposable diaper that the child uses, as Fig. 1~shown in Figure 4, its back-sheet 3 with face sheet 2, liquid impermeability or water proofing property of liquid permeability is the absorber 4 of leakproof sheet material and the liquid retainability between two sheet materials, and both sides alongst are provided with a pair of leg flap parts 5,5 that respectively has three elastomeric element 51A, 51B, 51C.
So-called leg flap parts among the present invention, be meant from the product end of the width of product middle body to the zone of the fore-and-aft direction the absorber side acies 41, particularly, be meant the part of the independent sheet material 62 that sets/comprise elastomeric element 51 and the part that is equipped with elastomeric element 51.
In addition, this disposable diaper 1 along the both sides of the length direction of absorber 4, is provided with a pair of three-dimensional rivel portion 6,6 that respectively has two elastomeric elements 61,61 as shown in Figures 1 and 2.
As shown in Figures 3 and 4, in the disposable diaper 1 of the 1st embodiment, be configured in the outermost elastomeric element 51A of width of pair of leg alar part 5,5, width that 51A is configured in this pair of leg alar part 5,5 outside the end and near, do not have or almost not have to form in the outside of above-mentioned elastomeric element 51A, 51A by folding that the sheet material 62 that forms leg flap parts 5 is constituted.
In addition, as shown in Figure 2, the both sides of the E of waistline portion in drosal part B are provided with a pair of width pars contractilis 7,7, the stretching region of this a pair of width pars contractilis 7,7 is present in the width outside that direction and this set direction that sets of leg flap parts 5 respectively, as shown in Figure 4, with the benchmark of face sheet 2 as thickness direction, this a pair of width pars contractilis 7,7 is configured in the position of more leaning on leakproof sheet material 3 one sides than pair of leg alar part 5,5.
As shown in Figure 5, leakproof sheet material 3 is rectangles of lengthwise, and the length direction of its length direction and diaper is consistent.Leakproof sheet material 3 runs through between the both ends of diaper length direction and configuration continuously.Particularly, leakproof sheet material 3 runs through between the ora terminalis of the ora terminalis of the drosal part B that forms the waist peristome and the C of veutro portion and disposes, and the anti-leakage on the whole length direction of diaper is improved.Therefore, disposable diaper 1 all has high anti-leakage equally no matter the diaper user is being stood or recumbency.
And, in the disposable diaper 1 of the 1st embodiment, as shown in Figure 4, a pair of width pars contractilis 7,7 is bonded on the leakproof sheet material 3, restraint zone 13 is to be arranged on the width outboard end of this width pars contractilis 7 to the outstanding mode of diaper width, non-skin contact one side of pair of leg alar part 5,5 part that disposes elastomeric element 51A, 51B, 51C is separately covered by leakproof sheet material 3 partly at the middle body of the length direction of leg flap parts 5.In this manual, so-called " covering partly ", its implication also comprises shown in the 6th embodiment described later, the situation that non-skin contact one side of above-mentioned part is all covered by leakproof sheet material 3.
In the disposable diaper 1 of the 1st embodiment, the width of width pars contractilis 7 is consistent with the width of diaper.In addition, the width of width pars contractilis 7 also is called the transverse direction of width pars contractilis 7.
The disposable diaper 1 of the 1st embodiment as shown in Figure 4, is provided with cover sheets (cover sheet) 11 between leakproof sheet material 3 and absorber 4.Face sheet 2 and leakproof sheet material 3 stretch out to foreign side from the both sides of the edge 41,41 and the edges at two ends of absorber 4, clamp cover sheets 11 in the position of these extensions and engage.
In addition, as shown in Figure 4, be provided with outer layer sheet 8 at the downside of leakproof sheet material 3.Outer layer sheet 8 has the hourglass shape profile consistent with the outer shape of diaper with cover sheets 11.Stretch out to the foreign side of width from the both sides of the edge of face sheet 2 respectively the both sides of the length direction of cover sheets 11 and outer layer sheet 8.The upper side of outer layer sheet 8 engages with leakproof sheet material 3 and cover sheets 11.
In this manual, the downside of leakproof sheet material 3 is non-skin contact one sides of leakproof sheet material 3, and the upside of leakproof sheet material 3 is skin contact one sides of leakproof sheet material 3.Position about other is also identical, and for example, the upside of outer layer sheet 8 is skin contact one sides of outer layer sheet 8.
The width of cover sheets 11 and outer layer sheet 8 is identical with leakproof sheet material 3 in the A of crotch portion, and is wideer than leakproof sheet material 3 in drosal part B and the C of veutro portion.
The face of skin contact one side of leakproof sheet material 3 engages with cover sheets 11 directly or indirectly, and the face of non-skin contact one side of leakproof sheet material 3 directly engages with outer layer sheet 8.The part of the face of skin contact one side of leakproof sheet material 3 engages with cover sheets 11 across width pars contractilis 7.
Absorber 4 is rectangles of lengthwise, and its length direction is consistent with the length direction of diaper.The length of absorber 4 and width are littler than leakproof sheet material 3 respectively.And, the absorber of representing among Fig. 54, the C of position ventralward portion one lateral deviation on its length direction is moved.
Disposable diaper 1 to the 1st embodiment describes in detail below.Pair of leg alar part 5,5 has the lower limb rivel in the outboard end of width respectively.As shown in Figure 3, the water proofing property sheet material 62 that forms three-dimensional rivel portion 6 stretches out to the width outside from stiff end 63, clamps cover sheets 11 and engages with leakproof sheet material 3, thereby formed leg flap parts 5.As shown in Figure 3, stiff end 63 be sheet material 62 between the lateral edges 41 and leg flap parts 5 of absorber 4, be fixed on the face sheet 2 along the whole length direction linearity ground of diaper and obtain.Leg flap parts 5 and three-dimensional rivel portion 6 in the fixed-site of stiff end 63 on face sheet 2.Fig. 3 is illustrated the right side among Fig. 2, and the left side also has identical structure.Fig. 4 too.
As shown in Figure 3, forming elastomeric element 51A, 51B, 51C that the end in the width outside of the sheet material 62 of leg flap parts 5 forms usefulness with 3 lower limb rivels encases and turns back.Engage with opposed sheet material 62 by known joint methods such as heat seal and bonding agents near the ora terminalis in the width outside of this sheet material that turns back 62.
As shown in Figure 2, an end of the length direction separately of pair of leg alar part 5,5 is fixed in drosal part B and goes up (fixed part 53), and the other end is fixed in the C of veutro portion and goes up (fixed part 52).
As shown in Figure 2, elastomeric element 51A, the 51B that sets on the width of pair of leg alar part 5,5,51C have the form of wire respectively, and with free end 54 almost parallels of leg flap parts 5 disposed 3.
In addition, outermost this elastomeric element 51A that is configured in the width of pair of leg alar part 5,5 is configured in ora terminalis 5mm apart from the width outside of leg flap parts 5 respectively with interior position.
Inside at the bag shape that constitutes by the sheet material 62 that is coated with elastomeric element 51A, 51B in the leg flap parts 5,51C, except the sidepiece of the length direction of sheet material 62, not engaging between the sheet material 62, even between each elastomeric element, also is isolating between the sheet material 62.And the inside at above-mentioned bag shape engages by known joint methods such as bonding agents between elastomeric element 51A, 51B, 51C and the sheet material 62.
As shown in Figure 3, in the downside of leg flap parts 5, cover sheets 11, leakproof sheet material 3 and outer layer sheet 8 stretch out and are covered in the position of the A of crotch portion respectively from the lateral edges 41 of absorber 4, but than the part of the outermost elastomeric element 51A more lateral that is configured in width not by coverings such as above-mentioned sheet materials.
In addition, " than the part of the outermost elastomeric element 51A more lateral that is configured in width " is the zone that comprises this elastomeric element 51A.
In the A of crotch portion, the part that is covered by leakproof sheet material 3 in the downside of leg flap parts 5 engages with leakproof sheet material 3 across cover sheets 11 on the whole length direction of diaper.
In addition, in drosal part B and the C of veutro portion, the downside of leg flap parts 5 all engages with leakproof sheet material 3 across cover sheets 11.
When dressing diaper, the leg flap parts 5 of the disposable diaper 1 of the 1st embodiment forms rivel by elastomeric element 51A, 51B, 51C, has improved lower limb anti-leakage on every side thus.And, as mentioned above,, therefore further improved lower limb anti-leakage on every side because the downside of leg flap parts 5 is covered by leakproof sheet material 3.
Below, a pair of width pars contractilis 7,7 in the disposable diaper 1 of the 1st embodiment is described in detail.This a pair of width pars contractilis 7,7 is respectively the composite component that forms by the following method: make in that many strand elastic 71,71... are stretched under the state that its almost parallel arranges, with two rectangular-shaped sheet materials this elastomeric element 71,71... clamps and engage.Above-mentioned sheet material can use non-woven fabrics, thin film, cotton paper etc., but considers with the viewpoint of breathability from giving pars contractilis, preferably uses non-woven fabrics.
As shown in Figure 2, in the transverse direction outboard end separately of this a pair of width pars contractilis 7,7, respectively to be provided with restraint zone 13 to the outstanding mode of transverse direction.
As shown in Figure 4, width pars contractilis 7, is sandwiched between cover sheets 11 and leakproof sheet material 3 and the outer layer sheet 8 and engages along under the state of diaper width elongation at the elastomeric element 71 of wire, 71....As shown in Figure 2, a pair of width pars contractilis 7,7 is individually fixed in than the position of the both sides of the edge at least 41,41 of absorber 4 more by the position in the width outside, and, be not provided in the middle body of this absorber 4.This has following two kinds of situations, and a kind of situation is as shown in Figure 4, is provided in than the position of absorber both sides of the edge 41,41 more to lean on the position of width inboard so that width pars contractilis 7,7 and absorber 4 are overlapping; Though another kind of situation is that this absorber 4 and this width pars contractilis 7,7 are not overlapping, the lateral edges of this width pars contractilis 7 is provided near the lateral edges (not shown) of absorber 4.No matter which kind of situation does not all preferably make the absorber 4 of the middle body that is configured in the diaper width flexible.
On the face of non-skin contact one side of width pars contractilis 7, as shown in Figure 4, the part of diaper width inboard is covered by leakproof sheet material 3, and engages with this leakproof sheet material 3.
As shown in Figure 3 and Figure 4, the part of non-skin contact one side of the leg flap parts 5 among the A of crotch portion is by cover sheets 11 and leakproof sheet material 3 and be connected with width pars contractilis 7.
In addition, as Fig. 2 and shown in Figure 4, a pair of width pars contractilis 7,7 is provided with across with the direction that sets of leg flap parts 5 respectively.At this, the above-mentioned direction that sets is the direction along the leg flap parts 5 that sets in the longitudinal direction shown in arrow among Fig. 2.The above-mentioned direction that sets comprises the part that disposes leg flap parts 5, and comprises the prolongation of the part that disposes leg flap parts 5.
In addition, as Fig. 2 and shown in Figure 4, a pair of width pars contractilis 7,7 is overlapping with leg flap parts 5 respectively, and clamps cover sheets 11 together with this leg flap parts 5, engages indirectly by bonding agent.
Because a pair of width pars contractilis 7,7 disposes in the mode that direction intersects that sets with leg flap parts 5, therefore, when dressing diaper, be close near the cross part of leg flap parts 5 on the skin of user, and be fixed on one's body the user, so the mobile of leg flap parts 5 is inhibited.
In addition, in the 1st embodiment, the direction that sets of elastomeric element 51A, the 51B of pair of leg alar part 5,5,51C is intersected with width pars contractilis 7 respectively.The above-mentioned implication that sets direction as mentioned above, as Fig. 2 and shown in Figure 4, the part that has set elastomeric element 51A, 51B, 51C is overlapping with width pars contractilis 7.
In the leg flap parts 5 of the disposable diaper 1 of the 1st embodiment, under the extended state of diaper, along the surface measurements of leg flap parts 5 and the vertical direction of diaper length direction on stiff end 63 and the length W1 between the free end 54, preferably all identical in any position of length direction.Length W1 is preferably 10~70mm, is preferably 20~50mm especially.
The extended state of the diaper of the 1st embodiment is meant the state that produces the contraction of the diaper that shrinks of having removed, and the contraction of this diaper is owing to the contraction of being fixed in each elastomeric element in the diaper by elongation produces.Promptly, the contraction flow region separately that makes width pars contractilis 7, leg flap parts 5 and three-dimensional rivel portion 6 is elongated to the state of the full-size value of diaper simultaneously on the length direction of diaper and width.
But, under the situation of the diaper with retractility filler rod portion 7 of aftermentioned shown in Figure 11 the 6th embodiment, so-called extended state, identical with the 1st embodiment between retractility filler rod portion 7,7, the state that refers to diaper integral body, it is included under the state that does not have tensile force, the state of the retractility filler rod portion 7 that can not shrink under no additivity of having tiled.
Under the extended state of diaper, the length W3 of the A of crotch portion in the leg flap parts 5 is preferably 50~350mm, is preferably 100~250mm especially.The wherein so-called crotch A of portion, the part between the flank section 9,9 (being described later) before and after being meant.
Disposable diaper 1 to the 1st embodiment further describes below, as shown in Figure 2, this disposable diaper 1 has the A of crotch portion at the middle body of length direction, front and back at the A of this crotch portion of length direction have drosal part (side's of length direction position) B and the C of veutro portion (the opposing party's position), be provided with a pair of restraint zone 13 in the both sides of the edge of above-mentioned drosal part B portion, the outer surface of above-mentioned veutro portion is provided with the set district 131 that is used for fixing restraint zone 13.When using diaper, the A of crotch portion is configured in the crotch portion (parts between two lower limbs) of user (person of being worn).In addition, as depicted in figs. 1 and 2, be provided with an offside filler rod portion (side panel part) 9,9 in the both sides separately of drosal part B and the C of veutro portion.
As shown in Figure 1, disposable diaper 1 under naturalness, the contractility by pair of leg alar part 5,5 and a pair of three- dimensional rivel portion 6,6 and to the surface of diaper one lateral bending song.And as shown in Figure 2, disposable diaper 1 has the shape of the hourglass shape that the length direction middle body tightens up as a whole under extended state.Wherein so-called naturalness is meant that gravity external force does not in addition act on the state on the disposable diaper 1 in fact.
A pair of three- dimensional rivel portion 6,6 in the disposable diaper 1 of the 1st embodiment be respectively three-dimensional rivel portion 6 is formed usefulness sheet material 62 as shown in Figure 3, set inboard from the outside of the both sides of the edge of face sheet 2 always and form, the sheet material 62 that above-mentioned three-dimensional rivel portion 6 forms usefulness has the elastomeric element 61 that three-dimensional rivel forms usefulness.And under the diaper extended state, each three-dimensional rivel portion 6 lies down on face sheet 2, but in Fig. 3, for convenience, three-dimensional rivel portion 6 is expressed as standing vertically with respect to face sheet 2.
Be configured in a pair of three-dimensional rivel portion 6 elastomeric element 61,61 as shown in Figure 2, have the form of wire respectively, and with free end 64 almost parallels of three-dimensional rivel portion 6 disposed two.
Three-dimensional rivel portion 6 is positioned at than stiff end 63 more by the partial fixing of diaper width inboard on face sheet 2 at the fixed part of drosal part B as shown in Figure 4.Solid rivel portion 6 is fixing too at the fixed part of the C of veutro portion.
In addition, on separately waist D, the D of drosal part B in the disposable diaper 1 of the 1st embodiment and the C of veutro portion, as shown in Figure 2, be formed with waist pars contractilis 12,12 respectively.In addition, waist pars contractilis 12,12 not record in Fig. 5.
Disposable diaper 1 according to the 1st above-mentioned embodiment, with the benchmark of face sheet 2 as thickness direction, a pair of width pars contractilis 7,7 is configured in the position of more leaning on leakproof sheet material 3 one sides than leg flap parts 5 respectively, so leg flap parts 5 is not easy to be subjected to causing owing to the activity of diaper user the influence of the gauffer of width pars contractilis 7 generations.Therefore, the above-mentioned lower limb rivel of leg flap parts 5 is close to the skin of user easily, and anti-leakage is improved.
In addition, dispose elastomeric element 51A near the end in the width of leg flap parts 5 outside, leg flap parts 5 is by this elastomeric element 51A skin one side of diaper user of tying tight from the outside, so prevented moving of this leg flap parts 5.
In addition, on the leg flap parts 5 in the A of crotch portion, than the outermost elastomeric element 51A position more in the outer part that is configured in width, do not dispose leakproof sheet material 3, cover sheets 11 and outer layer sheet 8, so, the flexibility height of the width outboard end of leg flap parts 5, the seal between the skin of user and the leg flap parts 5 is improved.
Below, with reference to Fig. 6~Figure 13 the disposable diaper 1 of the 2nd~the 6th embodiment is described.To the place that the 2nd~the 6th embodiment specifies, can suitably be useful in detailed description relevant in the 1st embodiment.In addition, in Fig. 6~Figure 13, the symbol identical to the parts labelling identical with Fig. 1~Fig. 5.
In the disposable diaper 1 of the 2nd embodiment, as shown in Figure 6 and Figure 7, leakproof sheet material 3 is disposed at the upside of cover sheets 11.And in leg flap parts 5, leakproof sheet material 3 is sandwiched between sheet material 62 and elastomeric element 51B, the 51C, has improved the anti-leakage of leg flap parts 5.
As shown in Figure 6 and Figure 7, engage with elastomeric element 51B, 51C at the face of one side of skin contact separately of the both sides of the length direction of leakproof sheet material 3, the face of its non-skin contact one side engages with sheet material 62.In addition, the width middle body of leakproof sheet material 3 engages partly with face sheet 2, absorber 4 or cover sheets 11.The width middle body of leakproof sheet material 3 is the parts except its width both ends.
In the disposable diaper 1 of the 3rd embodiment, as shown in Figure 8, leg flap parts 5 is formed by the water proofing property sheet material 55 that is different from the sheet material 62 that forms three-dimensional rivel portion 6.The end in the width of sheet material 55 outside encases elastomeric element 51A, 51B, 51C and goes back to upside.In addition, leakproof sheet material 3 is disposed on the sheet material 55, and is sandwiched in leg flap parts 5 between sheet material 55 and elastomeric element 51B, the 51C.
The end in the width outside that forms the sheet material 62 of three-dimensional rivel portion 6 reaches the top of end in the width outside of leg flap parts 5, and engages with leg flap parts 5.
In the disposable diaper 1 of the 4th embodiment, as shown in Figure 9, in the sheet material 62, the sidepiece of length direction inboard that covers the elastomeric element 61,61 of three-dimensional rivel portion 6 stretches out to the outside of width, cover elastomeric element 51A, 51B, the 51C of leg flap parts 5 from downside, and overlapping with the other side of the length direction of sheet material 62, form three-dimensional rivel portion 6 and leg flap parts 5.Downside is gone back in the position of the free end 54 of leg flap parts 5 in the both sides of the eclipsed length direction in the sheet material 62.
As shown in Figure 9, leakproof sheet material 3 is sandwiched between the fold back portion of the sheet material 62 in the leg flap parts 5, and engages with sheet material 62.
According to the disposable diaper 1 of the 4th embodiment, owing to the downside (with reference to Fig. 9) of leg flap parts 5 sheet material 62 overlapping formation, so further improved anti-leakage by leakproof sheet material 3 and 3 water proofing properties.
The disposable diaper 1 of the 5th embodiment as shown in figure 10,11 of cover sheets are disposed among the drosal part B.Cover sheets 11 is the rectangular shapes of growing crosswise, and its transverse direction is consistent with the width of diaper.The edges at two ends of the diaper width of cover sheets 11 is alignd with the edges at two ends of the diaper width of outer layer sheet 8.
As shown in figure 10, the face of skin contact one side of width pars contractilis 7 is covered by cover sheets 11, and engages with this cover sheets 11.
In the A of crotch portion, the downside of leg flap parts 5 directly engages with leakproof sheet material 3.
Other form is identical with the 1st above-mentioned embodiment.
In the both sides of the E of waistline portion of the drosal part B of the disposable diaper 1 of the 6th embodiment,,, dispose a pair of retractility filler rod portion 7,7 as a pair of width pars contractilis in the 1st embodiment as Figure 11 and shown in Figure 12.Side filler rod portion 9 among the drosal part B of the present embodiment is retractility filler rod portions (extensible panel part) 7.
The a pair of retractility filler rod portion 7,7 of the disposable diaper 1 of the 6th embodiment will have the composite component that the roughly trapezoid resin film of retractility is in length and breadth clamped and engaged and form with identical shaped non-woven fabrics.A pair of retractility filler rod portion 7,7 has the retractility of direction in length and breadth respectively in whole this retractility filler rod portion 7.In the transverse direction outboard end separately of this a pair of retractility filler rod portion 7,7, as shown in figure 11, to be provided with restraint zone 13 to the outstanding mode of transverse direction.
In the disposable diaper 1 of the 6th embodiment, as shown in figure 13, outer layer sheet 8 is rectangular shapes of lengthwise, and its profile is identical with leakproof sheet material 3.The face of skin contact one side of outer layer sheet 8 engages with leakproof sheet material 3.
The ora terminalis of the width inboard of a pair of retractility filler rod portion 7,7 in the disposable diaper 1 of the 6th embodiment as Figure 11 and shown in Figure 12, is adapted to the ora terminalis alignment with the width inboard of leg flap parts 5 respectively.
In addition, as Figure 11 and shown in Figure 12, a pair of retractility filler rod portion 7,7 is overlapping with leg flap parts 5 respectively, and directly engages with this leg flap parts 5 by bonding agent, and these bonding parts do not have retractility on width.
In addition, the leg flap parts 5 among the A of crotch portion is not except disposing cover sheets 11, and other structure is identical with the 1st embodiment shown in Figure 3.
Further illustrate below, in the leg flap parts 5 among the A of crotch portion, also be coated with leakproof sheet material 3 than the part of the outermost elastomeric element 51A more lateral that is configured in its width.The disposable diaper 1 of the present embodiment is not owing to there being cover sheets 11, so in the A of crotch portion, the part that is covered by leakproof sheet material 3 in the downside of leg flap parts 5 directly engages with this leakproof sheet material 3.
In drosal part B and the C of veutro portion, in the downside of leg flap parts 5, except with retractility filler rod portion 7 or side filler rod portion 9 engaging portion, other parts engage with leakproof sheet material 3.
In the face of non-skin contact one side of retractility filler rod portion 7, as Figure 12 and shown in Figure 13, the part of diaper width inboard is covered by leakproof sheet material 3, and engages with this leakproof sheet material 3.
The part of non-skin contact one side of the leg flap parts 5 among the A of crotch portion is connected with outer layer sheet 8 by leakproof sheet material 3.
Disposable diaper 1 according to the 6th above-mentioned embodiment, owing to use retractility filler rod portion 7 to replace the width pars contractilis of the 1st embodiment, so whole side filler rod portion 9 has retractility, give arresting and be bonded on the carrier band in the side filler rod portion 9 and make its elongation the time be oblique flexible rerum natura in appearance, thereby improved the fit from the thigh to the buttocks, further played to improve preventing the effect that leg flap parts 5 moves.
Disposable diaper of the present invention is not limited to each above-mentioned embodiment, only otherwise break away from aim of the present invention, then can suitably change.
For example, each leg flap parts 5 in the disposable diaper 1 of the 6th embodiment of the present invention also can exchange with each leg flap parts 5 in the 2nd embodiment, the 3rd embodiment, the 4th embodiment or the 5th embodiment.
In addition, the bar number that is provided in the thread elastomeric element of rubber in leg flap parts, three-dimensional rivel portion and the width pars contractilis can suitably change, and can also set to wide cut tabular, film like, netted elastomeric element.
In addition, the cover sheets 11 in the 1st~4 the embodiment is provided in the Zone Full of diaper, but might not be confined to this, also can be provided in the part zone of diaper.The effect of cover sheets is for the width extensible member is not exposed in skin one side, so so long as can get final product from width pars contractilis, the especially structure from the part in the leg flap parts end cover width direction outside.
In each embodiment of the present invention, a pair of width pars contractilis 7,7 can engage with leg flap parts 5 by heat seal respectively directly or indirectly.
In each embodiment, the part of each elastomeric element 51 that has set leg flap parts 5 is overlapping with width pars contractilis 7, but on the prolongation of the part of each elastomeric element 51 that has set leg flap parts 5, also width pars contractilis 7 can be set.
In addition, the width pars contractilis 7 in the 1st~5 the embodiment is the position that is different from cover sheets 11, and is as described below, also can form with cover sheets 11.At first, run through the both ends of the width of cover sheets 11, many strand elastic are arranged with elongation state almost parallel ground.Then, respectively at the width both ends of cover sheets 11, after with the width of regulation above-mentioned elastomeric element and cover sheets 11 being engaged, the middle body at the width of cover sheets 11 only cuts off above-mentioned elastomeric element.
Say that further the outer layer sheet 8 of disposable diaper of the present invention or cover sheets 11 as shown in Figure 6, also can be designed to not cover the elastomeric element 51 that the lower limb rivel forms usefulness.That is to say that the width of outer layer sheet 8 and cover sheets 11 also can be designed to narrower than leakproof sheet material 3 in the A of crotch portion.
In addition, as outer layer sheet in the disposable diaper of the present invention 8 or cover sheets 11, can use the sheet material of water proofing property.The leakproof sheet material 3 of the embodiment of the 1st~5 under this form, in the leg flap parts 5 of the A of crotch portion, can be designed to cover a plurality of lower limb rivels and form the part of the close interior side in the elastomeric element 51 of usefulness, and, the Design of length of the width of diaper can be become narrower than outer layer sheet 8 or cover sheets 11.Can make the end softness of leg flap parts 5 thus.In addition, by will being designed to arrive as the width of the outer layer sheet 8 of water proofing property sheet material and cover sheets 11 near the end of leg flap parts 5, thereby have improved the leak preventing effect of the necessity in the leg flap parts 5.In addition, in the 6th embodiment, except not disposing cover sheets 11, can carry out same design.
Disposable diaper of the present invention also can be through veutro with drosal part.
Disposable diaper of the present invention can be the disposable diaper that the child uses, and also can be the disposable diaper of adult's usefulness.
Omission declaratives in the above-mentioned embodiment and have only an important document that embodiment had also can suitably be applicable to respectively in other the embodiment, and the important document in each embodiment can suitably exchange between embodiment.
According to disposable diaper of the present invention, when using, diaper can prevent that leg flap parts from entering the diaper inboard, when using, diaper can prevent simultaneously moving of leg flap parts, fit height and prevented seepage.

Claims (5)

1. disposable diaper, it has face sheet, back-sheet and the absorber between two sheet materials, be provided with the pair of leg alar part along the both sides of the length direction of this absorber and have a pair of three-dimensional rivel portion of water proofing property sheet material, described pair of leg alar part has the elastomeric element of the lower limb rivel that is used to form in the leg flap parts, described water proofing property sheet material has the elastomeric element that is used to form the three-dimensional rivel in the three-dimensional rivel portion, described back-sheet be liquid impermeability or water proofing property and its run through between the both ends of diaper length direction and dispose; The described elastomeric element of described pair of leg alar part is configured near the end in the width outside of this pair of leg alar part or its, the outermost described elastomeric element that is configured in width is configured in apart from the ora terminalis 5mm outside the width of described pair of leg alar part with interior position, in the width of the described elastomeric element outside, do not have or almost be not formed for forming the folding of described leg flap parts; The both sides of the waistline portion in drosal part are provided with a pair of width pars contractilis, and the stretching region in this a pair of width pars contractilis is present in the width outside that direction and this set direction that sets of described leg flap parts respectively; With the benchmark of described face sheet as thickness direction, described a pair of width pars contractilis is configured in the position of more leaning on described back-sheet one side than described pair of leg alar part; Described a pair of width pars contractilis engages with described back-sheet, and restraint zone is to be arranged on the width outboard end of this width pars contractilis to the outstanding mode of diaper width; The described water proofing property sheet material that forms described three-dimensional rivel portion stretches out to the width outside from the stiff end of this sheet material and described face sheet, cover the upside of the described elastomeric element of described leg flap parts, turn back to downside then and cover the downside of the described elastomeric element of described leg flap parts, thereby form described three-dimensional rivel portion and described leg flap parts; Non-skin contact one side of the part that described elastomeric element disposed in the described pair of leg alar part is covered by described back-sheet and overlapping and form by described back-sheet and described water proofing property sheet material partly at the middle body of this leg flap parts length direction.
2. disposable diaper as claimed in claim 1, wherein, described a pair of width pars contractilis is provided with in the mode that direction intersects that sets with described leg flap parts respectively.
3. disposable diaper as claimed in claim 1, wherein, the direction that sets of the described elastomeric element of described pair of leg alar part is intersected with described width pars contractilis.
4. disposable diaper as claimed in claim 1, wherein, described pair of leg alar part has a plurality of described elastomeric elements respectively.
5. disposable diaper as claimed in claim 4, wherein, in the described leg flap parts of crotch portion, the position than the outermost described elastomeric element more lateral that is configured in width does not dispose described back-sheet.
CN2006100755172A 2005-04-21 2006-04-21 Disposable napkin Active CN1853592B (en)

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TWI368497B (en) 2012-07-21
JP2006320709A (en) 2006-11-30

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