JP2005237984A - Absorptive article and its packing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a folding-up method and a packing method of a nonleaking developing absorptive article. <P>SOLUTION: A developing paper diaper has a top sheet 1, a back sheet 2 and an absorber 3 interposed between these sheets. A leg peripheral three-dimensional gather 4A projecting to the using surface side with yarn rubber 7 inside, is formed in both side parts of the top sheet 1. This three-dimensional gather 4A is arranged so as not to overlap with the absorber 3 in folding-up (a storage state), in the narrowest part in the width direction of the absorber 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a disposable absorbent disposable diaper, a urine collecting pad, a sanitary napkin, etc. having a top sheet, a back sheet, an absorbent body interposed therebetween, and a three-dimensional gather that can stand on the use surface side. The present invention relates to a method for folding a functional article and a method for packing the folded expandable absorbent article.

  A conventional unfoldable disposable diaper is disclosed in, for example, Japanese Patent Application Laid-Open No. 2001-293029. That is, the developed disposable diaper shown in FIG. 8 includes a top sheet 21, a back sheet 22, an absorber 23 interposed therebetween, and a three-dimensional gather 24 that can stand on the use surface side. A pair of thin portions 23a that make it easy to fold the absorber 23 along the longitudinal direction are formed in the intermediate region.

  Then, the developed disposable diaper is folded along the thin portion 23a in the width direction of the absorbent body 23 so as to be about one third of the width dimension of the absorbent body 23.

  FIG. 9 shows another conventional folding method for unfolded disposable diapers. The developed disposable diaper shown in this figure includes a top sheet 31, a back sheet 32, an absorbent body 33 interposed therebetween, a three-dimensional gather 34 that can stand on the use surface side, and a side flap 35 that extends to the outside. I have it.

  The absorber 33 has a substantially hourglass shape, and the three-dimensional gather 34 is provided on the absorber 33 in the narrowest portion 33 a of the absorber 33.

  When the unfoldable disposable diaper configured as described above is folded, first, the three-dimensional gather 34 is folded in FIG. Next, the side flap 35 is folded toward the inner side of the absorber 33 along the virtual fold line G <b> 1 at the edge of the absorber 33 at the narrowest portion 33 a. Next, as shown in FIG. 9, it is folded in three along the virtual fold line G2 in a direction orthogonal to the folding direction.

JP-A-00-000000 Japanese Patent Application Laid-Open No. 07-285187

  However, in the folding method of the unfolded disposable paper diaper as shown in FIG. 8, two thin folds are formed in the longitudinal direction of the absorbent body 23 on the thin portion 23a on the absorbent body 23 of the folded unfolded disposable paper diaper. In addition, there is a problem that urine etc. flows along this crease, causing urine leakage and the like.

  Further, in the folding method of the unfoldable disposable diaper as shown in FIG. 9, since the three-dimensional gather 34 is located on the virtual fold line G1 in the narrowest portion 33a, a folding bag enters the three-dimensional gather 34 and is used. When it does, there is a problem that it does not stand up sufficiently and causes urine leakage and the like.

  Then, this invention is providing the folding method and packing method of the expandable absorbent article which does not leak.

  Therefore, the invention according to claim 1 is a folding method of a deployable absorbent article comprising a top sheet, a back sheet, an absorbent body 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 the absorber, and between the stored three-dimensional gathers and the absorber in the narrowest part in the width direction of the absorber. The stored three-dimensional gather is overlaid on the absorber.

  The invention according to claim 2 is the folding method of the expandable absorbent article according to claim 1, wherein the side flap is folded so as to overlap the absorbent body, and then in a direction perpendicular to the folding direction. It is characterized by folding in three.

  The invention according to claim 3 is a packing method for a deployable absorbent article, wherein a plurality of the deployable absorbent articles folded by the folding method according to claim 2 are stacked in the lateral direction, and the stacking is performed. Compressed to 0.6 to 0.8 times the combined thickness and accommodated in a packaging bag.

Invention of Claim 4 is a packing method of the expansion | deployment type | mold absorbent article of Claim 3, Comprising: The compression work of the absorber of the said compression | deployment type | mold expandable absorbent article is 4.9-6.9 J /. m ² , compression hardness is 0.4 to 0.55, and compression recovery is 30 to 40%.

  Therefore, according to the first aspect of the present invention, when the side flaps are folded, the three-dimensional gather is placed in the retracted state, and at the narrowest part of the absorber, it is folded between the stored three-dimensional gather and the absorber. It is possible to provide a folding method and a packing method for a deployable absorbent article that does not fold into the three-dimensional gathers and that the three-dimensional gathers normally stand up during use and does not leak.

  According to invention of Claim 2, in addition to the effect of Claim 1, after folding a side flap, it is made into three folds in the direction orthogonal to the folding direction, Therefore A deployment type absorbent article is compact. Can be folded into

  According to the third aspect of the present invention, a plurality of the absorbent articles are stacked in the lateral direction in a state where the expandable absorbent article is erected, and compressed to a thickness of 0.6 to 0.8 times the stacked thickness. Since it is accommodated in the container, it can be compact and can be packaged so that no creases remain during use.

According to invention of Claim 4, in addition to the effect of Claim 3, the compression work of the absorber which compresses and accommodates in a packaging bag is 4.9-6.9 J / m < ² >, In addition, since the compression hardness is 0.4 to 0.55 and the compression recovery property is 30 to 40%, the absorbent body is elastic, and the absorbent body is compressed when the packaging bag is opened. The previous thickness and flexibility can be restored and a good wearing feeling can be obtained.

  Hereinafter, with reference to the drawings, a folding method and a packing method for a developed disposable diaper (deployable absorbent article) will be described. FIG. 1 is a perspective view when the unfoldable disposable diaper used in this example is mounted, and FIG. 2 is a partially broken plan view showing a state where the unfoldable disposable diaper shown in FIG. 1 is unfolded.

  The unfolded disposable diaper shown in FIGS. 1 and 2 includes a top sheet 1, a back sheet 2, an absorbent body 3 interposed therebetween, and a three-dimensional gather 4A that can stand on the use surface side. The absorbent body 3 is covered with a tissue paper for absorption (not shown). Moreover, the absorber 3 has a substantially hourglass shape, and the narrowest portion 3a is formed near the center in the longitudinal direction in FIG.

  The top sheet 1 is a material that constitutes a use surface of the unfoldable disposable diaper and has a function of transmitting excrement such as urine to the absorber 3 side, and a material having a touch close to an underwear is preferable. As such a material, a woven fabric, a nonwoven fabric, a porous film, etc. can be used, for example. Moreover, what added the function which performs the water-repellent process to the peripheral part of the top sheet 1, and prevents the leakage by bleeding of urine etc. in this peripheral part is preferable.

  The back sheet 2 is preferably a material having air permeability and good texture. As such a material, similarly to the top sheet 1, a woven fabric, a nonwoven fabric, a porous film, or the like can be used. Further, it is preferable that the inside of the back sheet 2 is subjected to water repellent treatment and added with a function of preventing leakage due to bleeding of urine from the absorber 3 side.

  The absorbent body 3 is preferably, for example, a combination of a high-molecular water-absorbing polymer using woven pulp as a main material, or a mixture of a thermoplastic resin, cellulose fiber, and a high-molecular water-absorbing polymer subjected to heat treatment. In addition, as the material of the absorbent body 3, a mixture of a polymer and pulp may be used. In this case, the above-described polymer water-absorbing polymer may be present in any position of the upper layer, middle layer and lower layer of the absorber 3.

  A liquid-impermeable sheet 5 made of a polyethylene film is provided between the absorber 3 and the back sheet 2.

  On both sides of the top sheet 1, there are provided three-dimensional gathers 4 </ b> A for leg rotations that can be erected on the use surface side with the rubber thread 7 inside. Further, outside the three-dimensional gather 4A, side flaps 6 comprising a gather sheet 4 and a back sheet 2 constituting the three-dimensional gather 4A extend, and on both sides of the side flap 6 which is the back side when mounted, the unfolded type when mounted. A fastening member 8 for fixing the waist of the paper diaper is provided.

  Specifically, the three-dimensional gather 4A is provided outside the absorber 3 at the narrowest portion 3a in the width direction of the absorber 3 as shown in FIG. 3A, and is three-dimensional as shown in FIG. When the gather 4A is folded so as not to overlap the absorber 3 (stored state), the gather 4A is provided so as not to overlap the absorber 3.

  FIG. 4A is a cross-sectional view of the developed disposable diaper in CC of FIG. Here, since the width of the absorber 3 is wider than that of the narrowest portion 3 a, the three-dimensional gather 4 </ b> A is provided so as to overlap the absorber 3.

  When folding the unfoldable disposable diaper configured in this manner, first, as shown in FIG. Is folded inward along a virtual fold line F1 between the three-dimensional gather 4 and the three-dimensional gather 4. Specifically, as shown in FIG. 3 (B), the three-dimensional gather 4A is set in the retracted state, and the side flaps 6 are folded inward from both sides as shown in FIG. 3 (C) in the virtual fold line F1.

  That is, when the side flap 6 is folded, the three-dimensional gather 4A is set in the retracted state, and the stored three-dimensional gather 4A is folded between the stored three-dimensional gather 4A and the absorber 3 at the narrowest portion 3a of the absorber 3. Superimpose on the absorber 3.

  Then, since no crease is formed on the three-dimensional gather 4A, it can stand up normally during use. 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 from both sides to the inside in the virtual fold line F1 on the absorber 3. And bend as shown in FIG.

At this time, L and L ₁ are set so that the length L ₁ of the bent portion 3 b on both sides of the absorber 3 is L ≧ 2L ₁ with respect to the length L of the unbent portion. Therefore, the bent portions 3b on both sides of the absorbent body 3 do not overlap each other, so that the thickness can be reduced when folded.

  In this way, when folded along the virtual fold line F1, it becomes as shown in FIG. Next, it is folded in three in a direction orthogonal to the folding direction. That is, in the virtual fold line F2 that is orthogonal to the virtual fold line F1 and that divides the longitudinal direction of the developed paper diaper into approximately three equal parts, it is folded in three as indicated by arrows from both ends of the developed paper diaper inward. When folded, it becomes as shown in FIG.

  Then, as shown in FIG. 7, the folded unfolded disposable diapers are stacked and compressed in a horizontal direction in a standing state, accommodated in the packaging bag 9, and packed. At this time, the developed disposable diaper folded so as to have a thickness 0.6 times the thickness of the overlapped thickness is compressed.

Note that, in the absorbent body 3 used in this example, the compression work (WC) of the compressed spread-type disposable diaper absorbent body 3 is 4.9 J / m ² and the compression hardness (LC) is 0.00. 4 and the elasticity is such that the compression recovery (RC) is 40%. Therefore, when the packaging bag 9 is opened, the absorbent body 3 recovers the thickness and flexibility before compression, and a good wearing feeling can be obtained.

Here, the work of compression, compression hardness, and compression recoverability were measured using a KES-G5 handy compression tester with 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 It is a value when pressed against 3 for measurement.

  In this example, the spreadable disposable diaper has been described as the spreadable absorbent article. However, the present invention is not limited to this and can be applied to a urine collection pad, a sanitary napkin, and the like.

  In this example, the folded unfolded disposable diapers are stacked in the horizontal direction, and compressed into 0.6 times the thickness of the stacked thickness, and stored in the packaging bag 9. The present invention is not limited to this, and it may be compressed so as to have a thickness of 0.6 to 0.8 times the thickness of the folded unfolded disposable diapers. In this way, there is no crease left during use, urine leakage and the like can be prevented, and it is easy to attach to the human body.

Furthermore, in this example, the compression hardness of the compressed unfoldable disposable diaper 3 is 0.4, the compression work is 4.9 J / m ² , and the compression recovery is 40%. Although it was set as the absorber 3, this invention is not limited to this, The compression hardness of the absorber 3 is 0.4-0.55, and compression work is 4.9-6.9 J / m. ² and the compression recovery property may be set to 30 to 40%. If it sets in this way, at the time of use, the absorber 3 will recover to the thickness before compression, and a feeling of wearing is good.

  Further, in this example, the absorber 3 has a substantially hourglass shape, but is not limited thereto, and may be a rectangular absorber.

1 is a perspective view of a developed paper diaper as an example of the present invention. FIG. It is the partially broken top view. It is the B arrow sectional drawing, (A) is the state where solid gathers stood up, (B) is the state which folded solid gathers (stored state), (C) folded the side flap in F1 It shows the state. It is the C arrow sectional drawing, (A) is a state where solid gathers stood up, (B) is a state where solid gathers are folded (stored state), (C) is a side flap and an absorber in F1 This shows a state in which a part of is folded. It is a perspective view of the unfoldable paper diaper which shows the state which folded the unfoldable paper diaper as an example of this invention in F1. It is a perspective view of the unfolding type paper diaper which shows the state which folded the unfolding type paper diaper in F2. It is a perspective view which shows the state which accommodated the folded unfolding type | mold paper diaper in the packaging bag. It is sectional drawing which shows the state which folded the conventional expansion | deployment type | mold paper diaper. It is a partially broken plan view of another conventional developed paper diaper. It is the A arrow directional cross-sectional view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Top sheet 2 Back sheet 3 Absorber 3a Narrowest part 4A Three-dimensional gather 6 Side flap 9 Packaging bag

Claims (4)

In the folding method of the deployable absorbent article having a top sheet, a back sheet, an absorbent body interposed between them, and a three-dimensional gather that can stand on the use surface side,
When folding the side flaps, the three-dimensional gather is in a retracted state so as not to overlap the absorber, and between the stored three-dimensional gather and the absorber in the narrowest part in the width direction of the absorber. A folding method for a deployable absorbent article, wherein a stored three-dimensional gather is superposed on the absorbent body.   The folding method of the expandable absorbent article according to claim 1, wherein the side flaps are folded so as to be superimposed on the absorbent body, and then folded in three in a direction orthogonal to the folding direction.   A plurality of the spreadable absorbent articles folded by the folding method according to claim 2 are overlapped in the horizontal direction, and compressed to 0.6 to 0.8 times the overlapped thickness to form a packaging bag. A packing method for a deployable absorbent article, characterized in that it is housed. The compression work of the absorbent body 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 The packing method for a deployable absorbent article according to claim 3, wherein the property is 30 to 40%.

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