JP4464866B2 - Absorbent article and packing method thereof - Google Patents

Description

The present invention, absorbent body interposed the topsheet and the backsheet and between them and the paper Te disposable diaper provided with a standing gather which can be erected using side, the urine absorbing pad, absorbent sanitary napkins and the like The present invention relates to a packaging method for an article and its 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 23 a 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.

Therefore, an object of the present invention is to provide an absorbent article that does not leak and a packaging method thereof .

Therefore, a first aspect of the present invention, includes the topsheet and backsheet and an absorbent body interposed therebetween, the standing gathers in the longitudinal direction on both sides of the top sheet so as to be able to stand up, expand In this state, the absorber has a narrowest portion in the width direction in the vicinity of the center portion in the longitudinal direction, and has a substantially hourglass shape in which the width in the vicinity of both end portions in the longitudinal direction is wider than the vicinity of the center portion. In the vicinity of the center of the absorbent body, provided outside the absorbent body, in the vicinity of both ends of the absorbent body, the absorbent article provided on the absorbent body,
From the developed state of the absorbent article in which the three-dimensional gather is stored, both sides are folded inward along a folding line inside the three-dimensional gather, and both sides are folded back so that all the three-dimensional gather is placed on the absorber. With the state of being overlaid on
It is characterized by that.

The invention according to claim 2 is the absorbent article according to claim 1 , wherein the second fold line perpendicular to the fold line is folded after being folded inward along the fold line. Along with the both ends of the longitudinal direction along the inside, it is folded in three.

The invention according to claim 3, in the packing method of the intake Osamusei article, superimposed multiple laterally upright the absorption Osamusei article according to claim 1 or 2, 0 thickness that combined the overlaid. Compressed 6 to 0.8 times and accommodated in a packaging bag.

According the invention described in claim 4, claim in the packaging method of the intake Osamusei article according to 3, wherein the compressed intake Osamusei compression work amount 4.9~6.9J / m ² of the absorbent article The compression hardness is 0.4 to 0.55, and the compression recovery is 30 to 40%.

Therefore, according to the present invention, when the side flaps are folded, the three-dimensional gather is placed in the retracted state, and is folded between the stored three-dimensional gather and the absorber at the narrowest part of the absorber. It is possible to provide an absorbent article and a packaging method thereof in which the three-dimensional gather stands normally during use and does not leak.

According to the invention described in claim 2, in addition to the effects of claim 1, after folding the side flaps, since the tri-fold in a direction orthogonal to the folding direction, a compact intake Osamusei article Can be folded.

According to the invention described in claim 3, superimposed multiple laterally upright the absorption Osamusei article, the packaging bag is compressed to 0.6 to 0.8 times the thickness of the total thickness of the superimposed Since it is accommodated, it is compact and can be packaged so that no creases remain when used.

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 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 as described above, first, as shown in FIG. 2, the side flaps 6 on both sides of the unfoldable disposable diaper are disposed at the narrowest portion 3 a in the width direction of the absorbent body 3. 3 is folded inward at a virtual fold line ( fold line ) F1 between the three-dimensional gather 4A . 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. Accordingly, 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 (second 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, from both ends of the developed paper diaper to the inside When it is folded in three as shown by the arrow, 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 compression recovery 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
F1 virtual folding line (folding line)
F2 virtual fold line (second fold line)

Claims (4)

Topsheet and the backsheet and the absorbent body interposed therebetween, provided with a standing gathers in the longitudinal direction on both sides of the top sheet so as to be able to stand up, in a developed state, the absorber, the longitudinal The narrowest part in the width direction is provided near the central part of the skirt, and the width near the both end parts in the longitudinal direction is wider than the vicinity of the central part, and the three-dimensional gather is absorbed near the central part of the absorber. Provided on the outside of the body, in the vicinity of both ends of the absorber, in the absorbent article provided on the absorber,
From the developed state of the absorbent article in which the three-dimensional gather is stored, both sides are folded inward along a folding line inside the three-dimensional gather, and both sides are folded back so that all the three-dimensional gather is placed on the absorber. With the state of being overlaid on
An absorbent article characterized by that.   Folding inward along the fold line, and then folding in three inward from both ends in the longitudinal direction along two second fold lines orthogonal to the fold line. The absorbent article according to claim 1.   The absorbent article according to claim 1 or 2, wherein a plurality of the absorbent articles according to claim 1 are stacked in a lateral direction, and compressed into 0.6 to 0.8 times the overlapped thickness, and stored in a packaging bag. A method for packing absorbent articles. The compression work of the absorbent body of the compressed absorbent article is 4.9 to 6.9 J / m ² , the compression hardness is 0.4 to 0.55, and the compression recoverability is It is 30 to 40%, The packing method of the absorbent article of Claim 3 characterized by the above-mentioned.

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