JP4027021B2 - Post-processable pants-type diapers - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pant-type disposable diaper, specifically, a post-processable pant having a trunk opening formed by joining both side edges of a front body and a back body, and a pair of left and right leg openings. Related to type diapers.
[0002]
[Prior art]
A standard form of this type of pants-type diaper joins both side edges of the front body and the back body, and has a trunk opening and a pair of left and right leg openings.
[0003]
In many recent pants-type diapers, a so-called post-treatment tape is provided so that processing can be easily performed at the time of disposal.
[0004]
This post-processing tape is generally provided in the back body, the free end of the tape fastener is used as a fastening part for disposal of the diaper, the pants-type diaper is rolled up into small pieces, and then folded in advance. The fastening portion is positioned beyond the trunk opening and is fastened to the front body so that the rolled state is not released.
[0005]
A typical example is related to Japanese Utility Model Publication No. 8-10305 having a three-layer post-processing tape.
[0006]
[Problems to be solved by the invention]
However, this type of post-processing tape does not have a negligible proportion of the cost of the product, and there is a demand for effective use of the material of the disposable diaper body as much as possible due to increased environmental protection.
[0007]
Moreover, when using a post-processing tape, since it is non-stretchable, when the front-end | tip part of a tape fastener is fixed to the front body and made into the state rolled up, it cannot tighten firmly.
[0008]
Furthermore, if the adhesive at the tip of the tape fastener comes off, or if an attempt is made again thereafter, the adhesive strength of the adhesive may be reduced and the attachment may not be possible.
[0009]
Moreover, since excrement is likely to leak from the pair of left and right leg openings during post-processing, there is a post-processing configuration in which both sides are folded inward and then rounded back and forth. However, when the post-processing tape is used, the tightening force cannot be increased, so that the post-processing form cannot be adopted.
[0010]
Therefore, a main problem of the present invention is to provide a structure that can reduce the cost, can effectively use the material of the paper diaper main body, and exhibits a particularly large clamping force.
[0011]
[Means for Solving the Problems]
The present invention that has solved the above problems is as follows.
[0012]
[0013]
<Invention of Claim 1 >
Consists of a main body back sheet and an absorbent element that is fixed to the inner surface of the main body back sheet and extends in the front-rear direction centering on the crotch part, and both side edges of the front body and the back body of the main body back sheet are joined portions in by being joined to a pants-type diaper body opening and a pair of right and left leg openings are formed,
The main body backsheet is formed by laminating and fixing a plurality of non-woven fabrics, and a plurality of waist stretchable members for improving waist fit between the non-woven fabrics are fixed to form a stretchable sheet portion. Has been
The absorbent element is provided with an absorbent core mainly composed of cotton-like pulp between the liquid-permeable top sheet and the liquid-impermeable back sheet.
The back surface of the absorber element is fixed to the main body back sheet at the front and rear end portions and the crotch portion, and the main body back sheet is a liquid-impervious back sheet that is opposed to the portion other than the fixed region. It can be separated from the
The outer surface of the front body or the back body, the stretch sheet portion, the as at least one separation position of the front and rear, with respect to the portion from the separation position to the fixing region impermeable back sheet of said absorbent element A post-processable pant-type diaper characterized by being separable.
[0014]
(Function and effect)
At the time of disposal of the diaper, for example, a break opening in the waist direction is formed at the separation position of the stretchable sheet portion. Next, on the opposite side of the stretchable sheet part, if rolled up from the crotch center to the vicinity of the trunk opening, the pocket generated by separating the stretchable sheet part from the absorbent element is placed on the opposite body. It can be turned up and wrapped up in a pocket. Thereby, a diaper can be discarded, without making it dirty.
Since the elastic sheet portion has a function of tightening the body around the body and forms the outer surface of the product, a separate member for disposal is unnecessary, and the material cost does not increase.
[0015]
<Invention of Claim 2 >
The stretch sheet portion, only crotch side as the separation position, the portion from the separation position to the fixing region is capable separated from the liquid-impermeable back sheet of said absorbent element, according to claim 2, wherein Pants-type diaper that can be post-processed.
[0016]
(Function and effect)
The separation position such as the break opening can be both before and after the stretchable sheet portion, and only the crotch side can be the separation position.
[0017]
<Invention of Claim 3 >
3. The stretchable sheet portion is configured such that both the front and rear thereof are separated positions, and a portion from the separated position to the fixed region can be separated from the liquid-impermeable backsheet of the absorbent element. Pants-type diaper that can be post-processed.
[0018]
[0019]
<Invention of Claim 4 >
The stretchable sheet portion has a separation position in the area, and a portion from the separation position to the fixing region is separable from the liquid-impervious backsheet of the absorbent element. 2. Pants-type diapers that can be post-processed.
[0020]
[0021]
<Invention of Claim 5 >
The post-processable underpants type diaper according to any one of claims 1 to 4 , wherein a perforation for breaking is formed at the separation position .
[0022]
[0023]
[0024]
[0025]
[0026]
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to embodiments shown in the drawings.
(Overall structure example)
FIG. 1 shows a developed state of a pant-type diaper example P, FIG. 2 is a view taken along line XX in FIG. 1, and FIG. 3 is a perspective view of the product. That is, the paper diaper of this example is composed of a main body back sheet 5 and an absorbent body element AB that is fixed to the inner surface of the main body back sheet 5 and extends in the front-rear direction around the crotch portion.
[0028]
As can be seen from the relationship between the drawings, the body opening WO and the pair of left and right leg openings LO are formed by joining the side edges of the front body F and the back body B at the joint 30. . The main body back sheet 5 is formed by laminating and fixing a plurality of non-woven fabrics, and a plurality of waistline stretchable members 7 for improving the waistline fit between the waistline positions between them are fitted around the waistline. A plurality of waistline elastic members 8 are fixed in order to enhance the urine and prevent urine leakage before and after. The area in the front-rear direction having the elastic members 7 and 8 constitutes a trunk / waist region. The elastic members 7 and 8 can use, for example, natural rubber yarn or synthetic rubber yarn having an appropriate thickness and cross-sectional shape.
[0029]
As clearly shown in FIG. 2, the absorbent element AB is made of, for example, a non-woven fabric or the like, a liquid-permeable top sheet 1 that directly touches the wearer's skin, a plastic film such as polyethylene, or a non-woven fabric subjected to water repellent treatment. If necessary, an absorbent core 3 mainly composed of cotton-like pulp is wrapped with absorbent paper 3A, 3B between the liquid-impermeable backsheet 2 made of the above and the peripheral portion is bonded with, for example, a hot melt adhesive. Can be formed as an integrated unit. In the illustrated example, a second sheet 6 made of a nonwoven fabric or the like is provided under the liquid-permeable top sheet 1.
[0030]
On the other hand, barrier cuffs 20 around the legs are provided on both sides of the absorber element AB. The barrier cuff 20 includes a barrier sheet 21 that is folded back and doubled, and the base end portion of the inner surface of the barrier sheet 21 is fixed to the liquid-impermeable back sheet 2 with a hot melt adhesive. The extended portion of the outer surface of the barrier sheet 21 is fixed to the main body back sheet 5 with a hot melt adhesive or the like.
[0031]
In the vicinity of the folding free edge portion of the barrier sheet 21, one or a plurality of tip end elastic members 22 made of a belt-like rubber or a thread-like rubber are fixed with a hot melt adhesive or the like under extension. Further, as shown in the figure, the barrier cuff 20 has an outward portion formed by folding the distal end side outward at substantially the center of the standing free portion, and the inward base end portion side (the root side) that is not folded. ), One or a plurality of proximal end elastic members 22A are fixed under extension by a hot melt adhesive or the like.
[0032]
On the other hand, the back surface of the absorber element AB is fixed to the main body backsheet 5 with a hot melt adhesive or the like, for example, in the region Z of FIG. Accordingly, in the portion other than the fixed region Z, the back surface of the absorbent element AB is non-stationary relative to the body backsheet 5, the main body back sheet 5 is separated from the non-liquid-permeable back sheet 2 you face It is possible. The meaning of this “separable” is simply because there is no fixing means, since it is simply overlapped, and it is weakly fixed or fixed in the form of dots, and the main body backsheet 5 is separated from the liquid-impermeable backsheet 2. It should be construed to include both aspects that can be easily peeled apart.
[0033]
Hereinafter, first, comparative embodiments not included in the present invention will be described, and then, embodiments of the present invention will be described.
< Comparison form>
As shown in FIG. 4, a band member 40 that expands and contracts along the trunk circumference direction is disposed outside the outer surface of the back body B, and both end portions thereof are fixed to the outer surface of the back body B. In this case, both end portions of the band member 40 can be heat-sealed simultaneously when the side edges of the front body F and the back body B are heat-sealed at the joint 30.
[0034]
In this embodiment, when the diaper is discarded, as shown in FIG. 5, the front body F on the opposite side to the band member 40 is rolled up to the vicinity of the trunk opening WO while rounding the crotch portion, and then as shown in FIGS. 6 and 7. In addition, the band member 40 can be extended, turned back to the back body B on the opposite side, and the wound up portion can be fastened by the band member 40 as shown in FIG. Thereby, a diaper can be discarded, without making it dirty.
[0035]
Here, since the band member 40 is along the trunk circumference direction in the back body B, it can be used as an elastic member for fastening around the trunk of the product. Therefore, the elastic members 7 and 8 illustrated in FIGS. 1 to 3 are not necessary.
[0036]
The band member 40 may be provided outside the front body F. The band member 40 may extend and contract at the center in addition to the band member 40 extending and contracting in the entire longitudinal direction.
[0037]
< Mode of the present invention >
This form of this invention has an elastic sheet part which expands / contracts along the trunk periphery direction on the outer surface of the front body and / or the back body. In the embodiment, the expansion members 7 and 8 are arranged on the front body F and the back body B by the expansion members 7 and 8 similarly to the embodiment shown in FIGS. An elastic sheet portion 41 is constituted by the back sheet 5 and the elastic member 7.
[0038]
Three specific examples will be given as the mode of the present invention. The first specific example is such that only the crotch side of the stretchable sheet portion 41 is the separation position 41a as shown in FIG. Portion from the separating position 41a to the fixing region Z is stretchable sheet portion 41 (constituted by a body backsheet 5 and elastic member 7), to the non-liquid-permeable back sheet 2 you facing the It can be separated.
[0039]
At the time of disposal of the diaper, a breaking opening in the waistline direction is formed at the separation position 41a of the back body B. In addition to forcibly breaking the main body backsheet 5 by hand, the breakage opening can previously form a line that is weak against breakage such as the formation of perforations at the separation position 41a.
[0040]
Next, on the opposite side of the stretchable sheet portion 41, that is, as shown in FIG. 10, when the front body F is rolled up from the crotch center to the vicinity of the trunk opening WO, the stretchable sheet portion 41 is impermeable. the pocket was created by spaced liquid backsheet 2 or al, as shown in FIGS. 11 and 12, and the bottom of the pocket (which is the longitudinal direction edge of the fixed region Z of the back body B) bordering The part wound up and wound up to the front body F side can be wrapped by the pocket by the elastic sheet part 41 as shown in FIG. Thereby, a diaper can be discarded, without making it dirty. In this form, since the part which wound up is wrapped with the elastic sheet part 41, there is no leakage of excrement.
[0041]
Since the elastic sheet portion 41 has a tightening function in the body circumference direction of the body and forms the outer surface of the product, a separate member for disposal is unnecessary, and the material cost does not increase.
[0042]
On the other hand, the second embodiment, as shown in FIG. 14, in addition to the separating position 41a in the back body B, to have a other separation position 41b also in the crotch side of the longitudinal direction end of the fixed region Z of the back body B Is. Broken at the separation position 41a and the separation position 41b, when the stretch sheet 41 of the breaking zone is separated liquid-impermeable back sheet 2 or al, the band to expand and contract is formed, the band this stretch, Post-processing can also be performed in the same form as in FIGS.
[0043]
Further, as a third specific example, as shown in FIG. 15, a separation position 41 c may be provided in the stretchable sheet portion 41 area. In this case, the separation position 41c becomes later contrast than the front zone, the separation position 41c on the other hand, since become before for than the rear zone which, "stretch sheet portion in the present invention, the This satisfies the condition that “the separation position is at least one of the front and rear sides”.
[0044]
At the time of disposal of the diaper, as shown in FIG. 16, a break opening 41cO in the waistline direction is formed in the stretchable sheet portion 41. In this case, in order to facilitate the formation of the break opening 41cO, it is possible to form a line portion having a weak strength due to a perforation or the like. Next, as shown in FIG. 17, in the front body F on the opposite side of the stretchable sheet portion 41, if rolled up from the trunk opening WO to the center of the crotch portion, as shown in FIG. 17, the stretchable sheet portion 41 is lowered as shown in FIG. 17, the pocket P generated thereby is turned back to the front body F side, and the portion wound up by the pocket P is wrapped as shown in FIG. 18. be able to. Thereby, a diaper can be discarded, without making it dirty.
Also in this form, since the elastic sheet part 41 forms the expansion / contraction part of the outer surface of a body, the separate member for disposal is unnecessary and there is no increase in material cost.
[0045]
[0046]
[0047]
[0048]
[0049]
[0050]
[0051]
[0052]
[0053]
[0054]
[0055]
[0056]
[0057]
[0058]
【The invention's effect】
As described above, according to the present invention, there are advantages that post-processing can be performed reliably and costs can be reduced.
[Brief description of the drawings]
FIG. 1 is a development view of an example of a pants-type diaper that is an object of the present invention.
FIG. 2 is a view taken along the line XX in FIG.
FIG. 3 is a perspective view of an example of a pants-type diaper that is an object of the present invention.
FIG. 4 is a perspective view of a comparative embodiment.
FIG. 5 is a perspective view of a first stage of post-processing in a comparative embodiment .
FIG. 6 is a perspective view of a second stage of post-processing in a comparative embodiment .
FIG. 7 is a perspective view from the body side opposite to the second stage of post-processing in the comparative embodiment .
FIG. 8 is a perspective view of a completed state of post-processing in a comparative embodiment .
FIG. 9 is a perspective view of a first specific example in the embodiment of the present invention .
FIG. 10 is a perspective view of a first stage of post-processing in the first specific example .
FIG. 11 is a perspective view of a second stage of post-processing in the first specific example .
FIG. 12 is a perspective view from the body side opposite to the second stage of post-processing in the first specific example .
FIG. 13 is a perspective view showing a completed state of post-processing in the first specific example .
FIG. 14 is a perspective view of a second specific example in the embodiment of the present invention .
FIG. 15 is a perspective view of a third specific example in the embodiment of the present invention .
FIG. 16 is a perspective view of a first stage of post-processing in the third specific example .
FIG. 17 is a perspective view of a second stage of post-processing in the third specific example .
FIG. 18 is a perspective view of a completed state of post-processing in the third specific example .
[Explanation of symbols]
AB ... Absorber element, F ... Front body, B ... Back body, WO ... Trunk opening, P ... Pocket, 1 ... Liquid-permeable top sheet, 2 ... Liquid-impervious back sheet, 3 ... Absorbent core, 5 ... Main body back sheet, 7, 8 ... expandable member, 20 ... barrier cuff, 30 ... joint part, 40 ... band member, 41 ... expandable sheet part, 41a-41c ... separation position, 41cO ... break opening.

Claims (5)

Consists of a main body back sheet and an absorbent element that is fixed to the inner surface of the main body back sheet and extends in the front-rear direction centering on the crotch part, and both side edges of the front body and the back body of the main body back sheet are joined portions in by being joined to a pants-type diaper body opening and a pair of right and left leg openings are formed,
The main body backsheet is formed by laminating and fixing a plurality of non-woven fabrics, and a plurality of waist stretchable members for improving waist fit between the non-woven fabrics are fixed to form a stretchable sheet portion. Has been
The absorbent element is provided with an absorbent core mainly composed of cotton-like pulp between the liquid-permeable top sheet and the liquid-impermeable back sheet.
The back surface of the absorber element is fixed to the main body back sheet at the front and rear end portions and the crotch portion, and the main body back sheet is a liquid-impervious back sheet that is opposed to the portion other than the fixed region. It can be separated from the
The outer surface of the front body or the back body, the stretch sheet portion, the as at least one separation position of the front and rear, with respect to the portion from the separation position to the fixing region impermeable back sheet of said absorbent element A post-processable pant-type diaper characterized by being separable. The stretch sheet portion, only crotch side as the separation position, the portion from the separation position to the fixing region is capable separated from the liquid-impermeable back sheet of said absorbent element, according to claim 2, wherein Pants-type diaper that can be post-processed. 3. The stretchable sheet portion is configured such that both the front and rear thereof are separated positions, and a portion from the separated position to the fixed region can be separated from the liquid-impermeable backsheet of the absorbent element. Pants-type diaper that can be post-processed. The stretchable sheet portion has a separation position within the area, and a portion from the separation position to the fixing region is separable from the liquid-impermeable backsheet of the absorbent element. 2. Pants-type diapers that can be post-processed. The post-processable underpants type diaper according to any one of claims 1 to 4 , wherein a perforation for breaking is formed at the separation position .

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