JP2004041307A - Folding method and packing method for spreading type absorbable article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a folding method and a packing method for a leakproof spreading type absorbable article. <P>SOLUTION: In the spreading type paper diaper having a top sheet 1, a back sheet 2 and an absorbent 3 interposed therebetween, a three-dimensional gather 4A surrounding legs protruding to the wearing side thereof with a thread rubber 7 inside is formed on both side parts of the top sheet 1. The three-dimensional gather 4A is so arranged as to be kept from overlapping the absorbent 3 when folded (housed) at the narrowest part across the width of the absorbent 3. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a topsheet, a backsheet, an absorbent interposed between them, and a deployable absorbent such as a disposable deployable disposable diaper, a urine absorbing pad, a sanitary napkin or the like having a three-dimensional gather capable of standing on the use surface side. TECHNICAL FIELD The present invention relates to a method for folding an absorbent article and a method for packing the folded-out absorbent article.
[0002]
[Prior art]
A conventional unfoldable disposable diaper is disclosed in, for example, Japanese Patent Application Laid-Open No. 2001-293029. That is, the unfolded disposable diaper shown in FIG. 8 includes a top sheet 21, a back sheet 22, an absorber 23 interposed therebetween, and three-dimensional gathers 24 that can stand on the use surface side. A pair of thin portions 23a is formed in the intermediate region along the longitudinal direction to facilitate folding back of the absorber 23.
[0003]
Then, the unfolded disposable diaper is folded along the thin portion 23a in the width direction of the absorber 23 so as to be about one third of the width of the absorber 23.
[0004]
FIG. 9 shows another conventional folding method of a disposable disposable diaper. The unfolded disposable diaper shown in this figure includes a top sheet 31, a back sheet 32, an absorber 33 interposed therebetween, a three-dimensional gather 34 that can stand on the use surface side, and a side flap 35 that extends outside the gather. Provide.
[0005]
The absorber 33 has a substantially hourglass shape, and the three-dimensional gathers 34 are provided on the absorber 33 at the narrowest portion 33 a of the absorber 33.
[0006]
When folding the unfolded disposable diaper thus configured, first, in FIG. 10, the three-dimensional gathers 34 are folded. Next, in the narrowest portion 33a, the side flap 35 is folded toward the inside of the absorber 33 along a virtual fold line G1 at the edge of the absorber 33. Next, as shown in FIG. 9, the sheet is folded into three along a virtual folding line G2 in a direction orthogonal to the folding direction.
[0007]
[Problems to be solved by the invention]
However, in the folding method of the unfolded disposable diaper as shown in FIG. 8, the thin portion 23 a on the absorber 23 of the unfolded unfolded disposable diaper has two folds in the longitudinal direction of the absorber 23, and thus, when used. In addition, there is a problem that urine or the like flows along the fold and causes urine leakage or the like.
[0008]
Further, in the folding method of the unfolded disposable diaper as shown in FIG. 9, the three-dimensional gathers 34 are located on the virtual folding line G1 in the narrowest part 33a. There is a problem that when standing, it does not stand sufficiently and causes urine leakage and the like.
[0009]
Accordingly, an object of the present invention is to provide a folding method and a packing method of a deployable absorbent article that do not leak.
[0010]
[Means for Solving the Problems]
Therefore, the invention according to claim 1 is directed to a method of folding an expandable absorbent article having a top sheet, a back sheet, an absorber interposed therebetween, and three-dimensional gathers that can stand on a use surface side. When folding the side flaps, the three-dimensional gathers are stored so as not to overlap with the absorber, and at the narrowest portion in the width direction of the absorber, between the stored three-dimensional gathers and the absorber. The stored three-dimensional gathers are superimposed on the absorber.
[0011]
According to a second aspect of the present invention, in the folding method of the deployable absorbent article according to the first aspect, after the side flaps are folded so as to overlap on the absorber, the folding is performed in a direction orthogonal to the folding direction. It is characterized by being folded in three.
[0012]
According to a third aspect of the present invention, there is provided a method for packing an expandable absorbent article, wherein a plurality of the expandable absorbent articles folded by the folding method according to the second aspect are overlapped in a lateral direction in a standing state, and the overlap is performed. It is characterized in that it is compressed to 0.6 to 0.8 times the combined thickness and stored in a packaging bag.
[0013]
According to a fourth aspect of the present invention, in the packing method of the expandable absorbent article according to the third aspect, the compressed work of the absorber of the compressed expandable absorbent article is 4.9 to 6.9 J /. m ^2, and and, the compression hardness is 0.4 to 0.55, and compression recovery property is characterized in that 30 to 40%.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a method of folding and a method of packing an expandable disposable diaper (expandable absorbent article) will be described with reference to the drawings. FIG. 1 is a perspective view of a disposable diaper used in this example when the disposable diaper is mounted, and FIG. 2 is a partially broken plan view showing a state in which the disposable diaper shown in FIG.
[0015]
The unfolded disposable diaper shown in FIGS. 1 and 2 includes a top sheet 1, a back sheet 2, an absorber 3 interposed therebetween, and a three-dimensional gather 4A that can stand on the use surface side. The absorber 3 is covered with an absorbing tissue paper (not shown). The absorber 3 has a substantially hourglass shape, and has a narrowest portion 3a near the center in the longitudinal direction in FIG.
[0016]
The top sheet 1 constitutes a use surface of the unfolded disposable diaper, is made of a material having a function of transmitting excretions such as urine to the absorber 3 side, and is preferably a material having a feeling close to underwear. As such a material, for example, a woven fabric, a nonwoven fabric, a porous film, or the like can be used. In addition, it is preferable that the peripheral portion of the top sheet 1 is subjected to a water-repellent treatment to add a function of preventing leakage due to bleeding of urine or the like at the peripheral portion.
[0017]
The back sheet 2 is preferably made of a material having air permeability and good texture. As such a material, a woven fabric, a nonwoven fabric, a porous film, and the like can be used as in the case of the top sheet 1. Further, it is preferable that the inside of the back sheet 2 is subjected to a water-repellent treatment to add a function of preventing leakage due to bleeding of urine or the like from the absorber 3 side.
[0018]
It is preferable to use, for example, the absorbent body 3 in which unwoven pulp is used as a main material and a polymer water-absorbing polymer is used in combination, or a material obtained by heat-treating a mixture of a thermoplastic resin, cellulose fiber, and a polymer water-absorbing polymer. In addition, as the material of the absorber 3, a mixture of a high-molecular polymer and pulp may be used. In this case, the above-described high-molecular-weight water-absorbing polymer may be present in any position of the upper layer, the middle layer, and the lower layer of the absorber 3.
[0019]
A liquid-impermeable sheet 5 made of a polyethylene film is provided between the absorber 3 and the back sheet 2.
[0020]
On both sides of the top sheet 1, there are provided three-dimensional gathers 4A for legs that can stand on the side of use with thread rubber 7 inside. Further, outside the three-dimensional gathers 4A, side flaps 6 formed of the gather sheet 4 and the back sheet 2 constituting the three-dimensional gathers 4A extend. A fastening member 8 for fixing the waist around the disposable diaper is provided.
[0021]
The three-dimensional gathers 4A are provided outside the absorber 3 at the narrowest portion 3a in the width direction of the absorber 3 as shown in FIG. 3A, and are three-dimensionally gathered as shown in FIG. When the gathers 4A are folded so as not to overlap with the absorber 3 (in a stored state), the gathers 4A are provided so as not to overlap with the absorber 3.
[0022]
FIG. 4A is a cross-sectional view of the developed disposable diaper taken along the line CC in FIG. Here, since the width of the absorber 3 is wider than the narrowest portion 3 a, the three-dimensional gathers 4 </ b> A are provided so as to overlap the absorber 3.
[0023]
When folding the unfolded disposable diaper thus configured, first, as shown in FIG. 2, the side flaps 6 on both sides of the unfolded disposable diaper at the narrowest portion 3 a in the width direction of the absorber 3 are attached. Is folded inward at a virtual fold line F1 between the first and third gathers 4. Specifically, as shown in FIG. 3B, the three-dimensional gathers 4A are stored, and the side flaps 6 are folded inward from both sides at the virtual folding line F1 as shown in FIG. 3C.
[0024]
That is, when the side flaps 6 are folded, the three-dimensional gathers 4A are stored, and the folded three-dimensional gathers 4A are folded between the stored three-dimensional gathers 4A and the absorber 3 at the narrowest portion 3a of the absorber 3. It is superimposed on the absorber 3.
[0025]
Then, since no fold wrinkles are formed on the three-dimensional gathers 4A, the three-dimensional gathers 4A can be normally erected during use. Further, in FIG. 4B, since the width of the absorber 3 is wider than the narrowest portion 3a, the side flap 6 and the absorber 3 are directed inward from both sides at the virtual fold line F1 on the absorber 3. And bend as shown in FIG.
[0026]
In this case, the length L ₁ of the bent portion 3b of the side portions of the absorbent core 3, the length L of the portion that is not folded, setting the L and L ₁ such that L ≧ 2L _1. Therefore, since the bent portions 3b on both sides of the absorber 3 do not overlap each other, the thickness can be reduced when the absorber 3 is folded.
[0027]
FIG. 5 shows a result of folding along the virtual folding line F1 in this manner. Next, it is folded in three in a direction orthogonal to the folding direction. That is, at the virtual folding line F2, which is orthogonal to the virtual folding line F1 and is located at a position where the longitudinal direction of the unfolded disposable diaper is substantially equally divided into three, the three-folding is performed from both ends of the unfolded disposable diaper inward as indicated by arrows. Fig. 6
[0028]
Then, as shown in FIG. 7, a plurality of folded unfolded disposable diapers are overlapped in the horizontal direction in an upright state, compressed, stored in the packaging bag 9, and packed. At this time, the unfolded disposable diaper which has been folded so as to have a thickness of 0.6 times the overlapped thickness is compressed.
[0029]
The absorbent body 3 used in this example has a compressed work volume (WC) of 4.9 J / m ² and a compressed hardness (LC) of 0.4 in the compressed expandable paper diaper. 4 and elasticity such that the compression recovery (RC) is 40%. Therefore, when the packaging bag 9 is opened, the absorber 3 recovers its thickness and flexibility before compression, and a good wearing feeling can be obtained.
[0030]
Here, the compression work amount, compression hardness, and compression recovery were measured by using a KES-G5 handy compression tester at a pressing speed of 0.1 cm / s, a maximum compression pressure of 4903.3 Pa, and an end face of 2.0 cm ² as an absorber. This is a value when the measurement is performed by pressing against No. 3.
[0031]
In this example, the expandable disposable diaper has been described as the expandable absorbent article, but the present invention is not limited to this, and may be applied to urine absorbing pads, sanitary napkins, and the like.
[0032]
Further, in this example, a plurality of folded unfolded disposable diapers are superimposed in the horizontal direction in a standing state, and compressed so as to have a thickness of 0.6 times the superimposed thickness, and stored in the packaging bag 9. The present invention is not limited to this, but may be compressed to a thickness of 0.6 to 0.8 times the thickness of the folded unfolded disposable diapers. In this way, no folds remain during use, preventing leakage of urine and the like, and it is easy to attach to a human body.
[0033]
Furthermore, in this example, the compressed expandable disposable diaper absorber 3 has a compression hardness of 0.4, a compression work amount of 4.9 J / m ² , and a compression recovery of 40%. Although the absorber 3 is used, the present invention is not limited to this. The compression hardness of the absorber 3 is 0.4 to 0.55, and the compression work is 4.9 to 6.9 J / m. ² and the compression recovery may be set to 30 to 40%. With this setting, at the time of use, the absorber 3 is restored to the thickness before compression, and the wearing feeling is good.
[0034]
Further, in this example, the absorber 3 has a substantially hourglass shape, but is not limited thereto, and may be a rectangular absorber.
[0035]
【The invention's effect】
Therefore, according to the first aspect of the present invention, when the side flaps are folded, the three-dimensional gathers are in the retracted state, and at the narrowest portion of the absorber, the three-dimensional gathers are folded between the stored three-dimensional gathers and the absorber. It is possible to provide a folding method and a packing method of a deployable absorbent article in which the three-dimensional gathers do not wrinkle and the three-dimensional gathers normally stand up during use and do not leak.
[0036]
According to the invention described in claim 2, in addition to the effect described in claim 1, after the side flap is folded, the side flap is folded in three in a direction orthogonal to the folding direction, so that the deployable absorbent article is compact. Can be folded.
[0037]
According to the invention as set forth in claim 3, a plurality of the expandable absorbent articles are superimposed in the lateral direction in a standing state, and the package is compressed to a thickness of 0.6 to 0.8 times the superimposed thickness. , It is possible to pack it compactly and with no folds remaining when used.
[0038]
According to the invention as set forth in claim 4, in addition to the effect as set forth in claim 3, the compression work of the absorber compressed and accommodated in the packaging bag is 4.9 to 6.9 J / m ² , In addition, since the compression hardness is 0.4 to 0.55 and the compression recovery is 30 to 40%, the absorbent has elasticity, and when the packaging bag is opened, the absorbent is compressed. The former thickness and flexibility can be restored, and a good wearing feeling can be obtained.
[Brief description of the drawings]
FIG. 1 is a perspective view of an unfolded disposable diaper as an example of the present invention.
FIG. 2 is a partially broken plan view thereof.
3A and 3B are cross-sectional views taken in the direction of arrow B. FIG. 3A is a state in which three-dimensional gathers are standing, FIG. 3B is a state in which three-dimensional gathers are folded (retracted state), and FIG. It shows a state in which the flap is folded.
4A and 4B are cross-sectional views taken along the arrow C. FIG. 4A is a state in which three-dimensional gathers are standing, FIG. 4B is a state in which three-dimensional gathers are folded (retracted state), and FIG. It shows a state in which the flap and a part of the absorber are folded.
FIG. 5 is a perspective view of an unfolded disposable diaper as an example of the present invention, showing a state where the unfolded disposable diaper is folded at F1.
FIG. 6 is a perspective view of the developed diaper in a state where the developed diaper is folded in three at F2.
FIG. 7 is a perspective view showing a state in which the folded unfolded disposable diaper is stored in a packaging bag.
FIG. 8 is a cross-sectional view showing a state in which a conventional unfolded disposable diaper is folded.
FIG. 9 is a partially cutaway plan view of another conventional unfolded disposable diaper.
FIG. 10 is a cross-sectional view taken along arrow A.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Top sheet 2 Back sheet 3 Absorber 3a Narrowest part 4A Solid gather 6 Side flap 9 Packaging bag

Claims (4)

In the folding method of the expandable absorbent article with the top sheet, the back sheet and the absorber interposed therebetween, and a three-dimensional gather that can stand on the use surface side,
When the side flaps are folded, the three-dimensional gathers are stored so as not to overlap with the absorber, and at the narrowest portion in the width direction of the absorber, between the stored three-dimensional gathers and the absorber. A method for folding an expandable absorbent article, wherein a stored three-dimensional gather is overlapped on the absorber. The method of folding an expandable absorbent article according to claim 1, wherein after folding the side flap so as to overlap the absorber, the side flap is folded in three in a direction orthogonal to the folding direction. A plurality of the expandable absorbent articles folded by the folding method according to claim 2 are superimposed in a lateral direction in a standing state, and compressed to 0.6 to 0.8 times the superimposed thickness to form a packaging bag. A method for packing a deployable absorbent article, wherein the method comprises packing the article. The compressed work volume of the absorbent of the compressed expandable absorbent article is 4.9 to 6.9 J / m ² , the compression hardness is 0.4 to 0.55, and the compression recovery is achieved. The packing method for an expandable absorbent article according to claim 3, wherein the property is 30 to 40%.

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