Source: https://patents.google.com/patent/JP5279318B2/en
Timestamp: 2019-12-14 10:31:32
Document Index: 649221895

Matched Legal Cases: ['art 3', 'art 4', 'art 3', 'art 4', 'art 4', 'art 3', 'art 4', 'art 4', 'art 5', 'art 9', 'art 10']

JP5279318B2 - Absorbent article and manufacturing method thereof - Google Patents
JP5279318B2
JP5279318B2 JP2008092750A JP2008092750A JP5279318B2 JP 5279318 B2 JP5279318 B2 JP 5279318B2 JP 2008092750 A JP2008092750 A JP 2008092750A JP 2008092750 A JP2008092750 A JP 2008092750A JP 5279318 B2 JP5279318 B2 JP 5279318B2
JP2008092750A
JP2009240643A (en
裕之 原田
2008-03-31 Priority to JP2008092750A priority Critical patent/JP5279318B2/en
2009-10-22 Publication of JP2009240643A publication Critical patent/JP2009240643A/en
2013-09-04 Publication of JP5279318B2 publication Critical patent/JP5279318B2/en
An absorbent article with high fitting property and high absorptivity, where the end part is less deformed, is provided. An absorbent article comprising at least a liquid-permeable sheet, a liquid-impermeable sheet, and an absorber sandwiched between the liquid-permeable sheet and the liquid-impermeable sheet, wherein the absorber comprises a first absorbing part and a second absorbing part formed nearly on the center part of the first absorbing part and smaller in the area than the first absorbing part, and a compressed groove is continuously provided in nearly closed form to extend from the peripheral edge region in the longitudinal direction of the second absorbing part to the first absorbing part.
The present invention relates to an absorbent article. In particular, the present invention relates to an absorbent article such as a sanitary napkin or a urine leakage sheet in which a compressed groove is provided at a specific position of the absorbent body.
Conventionally, absorbent bodies for absorbent articles such as sanitary napkins are simply laminated with pulp fibers, so that the absorbent articles become flat when used, have poor fit, and have low absorption performance. There was a problem with.
As an absorbent article that solves such problems, Patent Document 1 includes a first pulp layer and a second pulp layer laminated on the first pulp layer and having a smaller area than the first pulp layer. In the two pulp layers, a specific groove portion is formed in the peripheral region, and by forming the groove portion, the absorber includes an absorbent portion including a first pulp layer and a second pulp layer inside the groove portion, and an outside of the groove portion. And the three steps of the absorption part containing the 1st pulp layer and 2nd pulp layer inside the periphery of the 2nd pulp layer, and the absorption part containing the 1st pulp layer outside the periphery of the 2nd pulp layer What is structured is known. In particular, the absorbent article is characterized in that deformation due to twisting is prevented by partially integrating the absorbent body and the topsheet during the manufacture of the absorbent body.
Japanese Patent Laid-Open No. 11-358
However, in the absorbent article of Patent Document 1, since the groove portion does not exist at all in the first pulp layer of the absorbent body, actually, the rigidity distribution of the absorbent article is poor, and the absorption caused by the twist in the first pulp layer. Deformation of the end of the property article tends to occur.
Therefore, an object of the present invention is to provide an absorbent article having a small fit at the end of the absorbent article due to twisting in the first pulp layer, a high fit, and a high absorbency.
As a result of intensive studies in view of such circumstances, the inventors of the present invention provide an absorbent body in which two absorbent parts having different areas are integrated with each other so that a compressed groove is continuously provided across the two absorbent parts. Thus, the inventors have found that the above-described problems can be solved, and completed the present invention.
That is, (1) The present invention is an absorbent article having at least a liquid-permeable sheet, a liquid-impermeable sheet, and an absorbent body sandwiched between the liquid-permeable sheet and the liquid-impermeable sheet. And
The absorber includes a first absorbent part and a second absorbent part formed on a substantially central part of the first absorbent part and having a smaller area than the first absorbent part.
The absorbent article is provided with a pressing groove continuously provided in a substantially closed shape from the peripheral region in the longitudinal direction of the second absorbent portion across the first absorbent portion.
(2) In the present invention, the depth of the squeezed groove provided continuously in the peripheral region in the longitudinal direction of the second absorbent portion is such that the depth reaches the first absorbent portion through the second absorbent portion. An absorbent article according to (1) is provided.
(3) The present invention provides the absorbent article according to (1) or (2), wherein the absorbent body has an intermittent portion in which a compressed groove is not formed at a peripheral edge portion in a longitudinal direction of the second absorbent portion. provide.
(4) The present invention provides the absorbent article according to (1) or (2), wherein the absorbent body has an intermittent portion where a compressed groove is not formed at a peripheral edge portion in a longitudinal direction of the first absorbent portion. provide.
(5) The present invention provides the absorbent article according to any one of (1) to (4), wherein the intermittent portion is a fold and is accommodated in a package in a three-fold state.
(6) The present invention provides an absorbent body comprising a first absorbent part and a second absorbent part formed on a substantially central part of the first absorbent part and having a smaller area than the first absorbent part. By stacking the mount and the liquid permeable sheet in this order, and continuously embossing from the liquid permeable sheet side to the first absorbent part from the peripheral area in the longitudinal direction of the second absorbent part, Provided is a method for producing an absorbent article, characterized in that a compressed groove is provided from the second absorbent portion to the first absorbent portion.
In the absorbent article of the present invention, since the absorbent body has the compressed groove extending over the first absorbent part and the second absorbent part, the change in rigidity of the absorbent article becomes gentle, and the uncomfortable feeling during use can be reduced. Moreover, the deformation | transformation resulting from the twist in a 1st absorption part does not produce easily compared with a conventional product, As a result, high fitting property and high absorptivity can be achieved.
The present invention will be described below with reference to the drawings, but the present invention is not limited to those shown in the drawings.
FIG. 1 is a plan view of one embodiment of the absorbent article of the present invention, and FIG. 2 is a YY ′ sectional view thereof. FIG. 3 is a plan view of a preferred embodiment of the absorbent article of the present invention.
The absorbent article 1 of the present invention includes at least a liquid permeable sheet 7, a liquid impermeable sheet 10, and an absorbent body 2. The absorber is usually integrated with the mount 6, and the integrated absorber is sandwiched between the liquid permeable sheet 7 and the liquid impermeable sheet 10. As shown in FIG. 1, the absorbent body includes a first absorbent portion 3 and a second absorbent portion 4, and the area of the second absorbent portion is smaller than the area of the first absorbent portion, and the second absorbent portion. The part is integrated on a substantially central part of the first absorption part. The shape of the absorber according to the present invention is not particularly limited as long as two absorbers having different areas are integrated, and as shown in FIG. 2, the layer made of the first absorber and the second absorber. The body layer may be laminated in advance. That is, it is only necessary that the portion where the second absorbent portion is disposed has a higher basis weight than the portion of only the first absorbent portion.
Although it changes with the uses of an absorber, etc., the thickness of the 1st absorption part 3 is generally about 1-10 mm, and the thickness of the 2nd absorption part 4 is generally about 2-30 mm. Moreover, the basic weight of the 1st absorption part 3 is generally about 100-400 g / m < 2 >, and the basic weight of the 2nd absorption part 4 is generally about 200-1200 g / m < 2 >.
In the absorbent body, the compressed groove 5 is formed across the first absorbent portion from the peripheral region in the longitudinal direction of the second absorbent portion. The pressing groove is continuously formed so as to have a substantially closed shape in plan view. For example, as shown in FIG. 1, the second absorbent portion has a tongue-like shape, and the squeezing groove is an arcuate shape curved in the longitudinal peripheral area of the second absorbent portion with respect to the center of the absorbent article. And is formed in a U shape extending from the peripheral region in the longitudinal direction of the second absorption portion to the first absorption portion. The compressed groove formed in the peripheral region in the longitudinal direction of the second absorption part is subjected to stress from the user's body, has a shape that matches the shape of the body from the user's excretion part to the buttocks, and is used Reduce leakage of excrement at times. On the other hand, the pressing groove formed across the first absorbent part from the peripheral region in the longitudinal direction of the second absorbent part alleviates the change in rigidity of the end of the absorbent article from the first absorbent part to the second absorbent part. And it gives rigidity to the 1st absorption part, and while reducing the twist of an absorptive article end part, the leakage of excrement at the time of use is reduced.
The depth of the compressed groove formed in the peripheral region in the longitudinal direction of the second absorbent portion is not particularly limited, and may be formed only in the second absorbent portion at a depth that does not penetrate the first absorbent portion, As shown in FIG. 2, it is preferable that the second absorption part is formed to a depth reaching the first absorption part. When the compressed groove reaches the first absorbent portion, the rigidity of the end of the absorbent article is maintained, and the twist is reduced. On the other hand, when the compressed groove is formed only in the second absorbent part, the upper surface of the first absorbent part is embossed at the position corresponding to the compressed groove of the second absorbent part on the upper surface of the first absorbent part. By being pressed by the pressure by processing, it has a slightly concave shape corresponding to the groove.
The shape of the compressed groove is to form a groove-like recess on the skin contact surface side of the absorbent article. By continuously forming the compressed groove, the lateral spread of the excrement can be blocked, and the excrement can be efficiently transferred below the absorber.
In a preferred embodiment of the absorbent article of the present invention, the absorbent body according to the present invention has an intermittent portion 8 in which no compressed groove is formed. An intermittent part is a part used as the crease | fold 11 when an absorbent article is accommodated in a packaging body in a three-fold state in order to provide a low-rigidity part to an absorber. The position where the intermittent portion is provided may be the peripheral edge portion in the longitudinal direction of the second absorption portion or the peripheral edge portion in the longitudinal direction of the first absorption portion in plan view. When provided in the second absorber, a low rigidity portion is formed at a predetermined position of the second absorber, and when provided in the first absorber, a low rigidity portion is formed at a predetermined position of the first absorber. Is done. Moreover, you may provide an intermittent part in both the peripheral edge part of the longitudinal direction of a 1st absorption part, and the peripheral edge part of the longitudinal direction of a 2nd absorption part.
FIG. 3 shows a preferred embodiment of the present invention having an intermittent portion at the peripheral edge in the longitudinal direction of the second absorbent portion. One set of intermittent portions is provided at the peripheral edge portion in the longitudinal direction of the second absorption portion at a position of about 1 mm to about 40 mm from the edge of the second absorption portion. The distance of the intermittent portion is usually about 2 mm to about 20 mm, preferably about 3 mm to about 10 mm. If the distance between the intermittent portions is less than 2 mm, the low-rigidity portion is not formed, and the uncomfortable feeling during use is not reduced. On the other hand, if it exceeds 20 mm, the leakage-proof property is lowered, which is not preferable. The length of the compressed groove provided continuously in the peripheral region in the longitudinal direction of the second absorbent portion is absorbed from the point of imparting deformability when the absorbent article is a daytime sanitary napkin, for example. A length of about 15 mm or more from the center line in the longitudinal direction of the body is preferable, and about 25 mm or more is more preferable from the viewpoint of imparting stable deformability.
When the intermittent part is provided in the second absorption part as shown in FIG. 3, the rigidity of the second absorption part is low, so that the absorbent article is not easily folded, and the absorbent property before folding is opened when the package is opened. It is easy to return to the shape of the article and easily fit to the excretory contact part. From the point of absorbability, even if there is an intermittent part in the second absorbent part, there is a continuous compressed groove in the peripheral region in the longitudinal direction of the second absorbent part. Leakage can be reduced by deforming the article upward. Further, by providing the intermittent portion in the second absorption portion, the second absorption portion can be designed to be large, and the absorption capacity can be increased.
On the other hand, when it is provided in the first absorbent part (not shown), the absorbent article can be easily adapted to the movement of the body by concentrating stress on the part having the lowest rigidity in the entire absorbent body. Moreover, even if an intermittent part exists in the 1st absorption part, since the pressing groove | channel which continued in the transversal direction from the peripheral edge part of the longitudinal direction of a 1st absorption part exists, a twist is hard to generate | occur | produce. Moreover, since the intermittent part does not exist in the second absorbent part, the second absorbent part can be miniaturized while having the minimum necessary absorption capacity. This miniaturization is achieved when the absorbent article is folded in three. It is advantageous for the packaging aspect. Furthermore, since there is no intermittent part in the 2nd absorption part contact | abutted by the excretion part, the discomfort at the time of use can be reduced.
Any of the above absorbent bodies can be preferably used in the absorbent article of the present invention, but an absorbent body having an intermittent portion in the second absorbent portion is more preferred from the viewpoint of less reduction in rigidity.
In the conventional absorbent article, since the groove portion is formed only in the second pulp layer, the rigidity of the second pulp layer becomes very high, there is no crease when the absorbent article is folded and wrapped, and the absorbent article The packaging shape of the article was limited. On the other hand, in the present invention, as described above, the low-rigidity portion corresponds to the fold 11 in the packaging aspect of the absorbent article, and the low-absorbance portion of the present invention can be formed at any desired position. The packaging shape of the article is not limited.
The liquid permeable sheet 7 is formed with a groove portion having the same shape as the substantially closed compressed groove, at the same position as the closed compressed groove, and the liquid permeable sheet 7 and the absorbent body 2 are integrated. Has been.
The absorber is composed of at least wood pulp, but may be composed of wood pulp further mixed with a superabsorbent polymer. Instead of wood pulp, for example, artificial pulp fibers such as chemical pulp, cellulose fibers, rayon and acetate can be exemplified. A superabsorbent polymer has a three-dimensional network structure in which a water-soluble polymer is appropriately cross-linked, absorbs water several hundred times to thousand times, but is essentially insoluble in water, and once absorbed water Does not separate even when a certain pressure is applied, and examples thereof include starch-based, acrylic acid-based, and amino acid-based particulate or fibrous polymers.
The absorbent article of the present invention can be used as a sanitary napkin or a urine leakage sheet.
Below, the manufacturing method of the absorbent article of this invention is demonstrated. Specifically, it includes the following steps (a) to (e) and is performed using a conventional production apparatus. (A) Using a known absorbent article stacking device, pulp fibers are uniformly stacked on a mount 6 such as a tissue, and have a substantially uniform thickness and basis weight approximately the same size as the mount. (B) Aside from the first absorption part, a second absorption part 4 having a smaller area than the first absorption part is formed separately from the first absorption part. (C) Wrapping the entire absorbent body with a mount, compressing the absorbent body, and cutting it into a predetermined absorbent body shape.
If the manufacturing method of the absorber 2 is obtained as a shape in which the first absorption part 3 and the second absorption part 4 are integrated, it is not limited to the above steps (a) and (b). For example, in the absorbent body in which the first absorbent unit 3 and the second absorbent unit 4 are integrated, the support bottom portion is disposed on the outer peripheral surface of the rotary drum of the fiber stacking device, and the first absorbent unit 3 and the second absorbent unit 4 It is also possible to install a support body having the same three-dimensional shape as the integrated shape, and to pile up pulp fibers on the support body.
If necessary, a nonwoven fabric or air laid pulp may be inserted as a second sheet between the liquid permeable sheet 7 and the absorbent body 2. An adhesive layer, for example, a layer made of a hot melt resin or a hot melt adhesive may be provided between the liquid permeable sheet 7 and the absorber 2 or between the second sheet and the absorber 2.
(D) Next, the absorber formed by cutting is embossed. By the embossing, the pressing groove is provided. Embossing can be performed using conventional equipment. For example, embossing is performed using an embossing roll having a desired compressed groove shape. When providing the layer which consists of hot-melt resin or a hot-melt-adhesive, it is preferable that embossing is hot embossing. By this embossing, the compressed groove may be formed and at the same time a plurality of members constituting the absorbent article may be combined and integrated. For example, the permeable sheet 7 can be supplied so as to cover the entire surface of the absorber on the second absorbent portion side of the absorber formed by cutting, and embossed to integrate them.
Simultaneously with the embossing, the groove 9 may be formed at a position corresponding to the compressed groove from the liquid impermeable sheet 10 side (see FIG. 2). The groove 9 is not directly formed by embossing, but is indirectly formed by reaction of embossing. The depth of the groove 9 is usually much shallower than the depth of the compressed groove.
(E) Finally, the liquid-impermeable sheet 10 mainly composed of polyethylene, polypropylene or the like is supplied, and the liquid-permeable sheet 7 and the liquid-impermeable sheet 10 are joined.
In the said embodiment, although the manufacturing method of the sanitary napkin was demonstrated to the example, the manufacturing method of this invention is applicable also to manufacture of another absorbent article, for example, the sheet | seat for urine leakage.
FIG. 1 is a plan view of one embodiment of the absorbent article of the present invention. 2 is a cross-sectional view taken along the line Y-Y 'of FIG. FIG. 3 is a plan view of a preferred embodiment of the absorbent article of the present invention.
DESCRIPTION OF SYMBOLS 1 Absorbent article 2 Absorber 3 1st absorption part 4 2nd absorption part 5 Squeeze groove 6 Mount 7 Liquid permeable sheet 8 Intermittent part 9 Groove part 10 Liquid impermeable sheet 11 Fold
An absorbent article having at least a liquid-permeable sheet, a liquid-impermeable sheet, and an absorbent body sandwiched between the liquid-permeable sheet and the liquid-impermeable sheet,
A pressing groove is continuously provided in a substantially closed shape across the first absorption part from the peripheral region in the longitudinal direction of the second absorption part ,
The depth of the squeezed groove provided continuously in the peripheral region in the longitudinal direction of the second absorbent part is a depth that penetrates the second absorbent part and reaches the first absorbent part,
The said absorber has the intermittent part in which a pressing groove is not formed in the peripheral edge part of the longitudinal direction of a 2nd absorption part, The said intermittent part is 1 set at a position of 1 mm-40 mm from the edge of a 2nd absorption part. Provided, and the distance of the intermittent portion is 2 mm to 20 mm,
The absorbent article, which is accommodated in a package in a state where the intermittent portion becomes a fold and is folded in three .
It is a method of manufacturing the absorbent article according to claim 1, wherein the absorbent article is formed on a mount, on a substantially central portion of the first absorbent portion, and having an area larger than that of the first absorbent portion. An absorbent body composed of a small second absorbent part, a base sheet, and a liquid permeable sheet are stacked in this order, and from the liquid permeable sheet side to the first absorbent part from the peripheral region in the longitudinal direction of the second absorbent part. The manufacturing method of an absorbent article characterized by providing a pressing groove extending over this 1st absorption part from this 2nd absorption part by embossing continuously.
JP2008092750A 2008-03-31 2008-03-31 Absorbent article and manufacturing method thereof Active JP5279318B2 (en)
JP2008092750A JP5279318B2 (en) 2008-03-31 2008-03-31 Absorbent article and manufacturing method thereof
EA201001370A EA201001370A1 (en) 2008-03-31 2009-02-20 Absorbing product and method for its preparation
PCT/JP2009/053612 WO2009122830A1 (en) 2008-03-31 2009-02-20 Absorptive article and method of producing the same
MYPI20104384 MY152460A (en) 2008-03-31 2009-02-20 Absorbent article and production method thereof
US12/933,732 US20110071486A1 (en) 2008-03-31 2009-02-20 Absorptive article and method of producing the same
CN200980111187XA CN101980677A (en) 2008-03-31 2009-02-20 Absorptive article and method of producing the same
BRPI0906305A BRPI0906305A2 (en) 2008-03-31 2009-02-20 absorbent article and method of production thereof
EP09728464A EP2260810A4 (en) 2008-03-31 2009-02-20 Absorptive article and method of producing the same
UAA201011395A UA102246C2 (en) 2008-03-31 2009-02-20 Absorptive articles
AU2009233103A AU2009233103A1 (en) 2008-03-31 2009-02-20 Absorptive article and method of producing the same
KR1020107023940A KR20110009114A (en) 2008-03-31 2009-02-20 Absorptive article and method of producing the same
TW098110747A TWI491384B (en) 2008-03-31 2009-03-31 Absorbent articles and their manufacturing methods
JP2009240643A JP2009240643A (en) 2009-10-22
JP5279318B2 true JP5279318B2 (en) 2013-09-04
ID=41135226
JP2008092750A Active JP5279318B2 (en) 2008-03-31 2008-03-31 Absorbent article and manufacturing method thereof
US (1) US20110071486A1 (en)
EP (1) EP2260810A4 (en)
JP (1) JP5279318B2 (en)
KR (1) KR20110009114A (en)
CN (1) CN101980677A (en)
AU (1) AU2009233103A1 (en)
BR (1) BRPI0906305A2 (en)
EA (1) EA201001370A1 (en)
MY (1) MY152460A (en)
TW (1) TWI491384B (en)
UA (1) UA102246C2 (en)
WO (1) WO2009122830A1 (en)
JP5292083B2 (en) * 2008-12-15 2013-09-18 花王株式会社 Absorbent articles
JP5475431B2 (en) * 2009-12-22 2014-04-16 花王株式会社 Absorbent articles
JP5822380B2 (en) * 2011-05-25 2015-11-24 花王株式会社 Absorber manufacturing method
DE50104539D1 (en) * 2000-03-02 2004-12-23 Hartmann Paul Ag Absorbent structure and method for the production thereof
JP4495405B2 (en) * 2002-06-14 2010-07-07 ユニ・チャーム株式会社 Absorbent articles
JP4870365B2 (en) * 2005-02-23 2012-02-08 ユニ・チャーム株式会社 Sanitary napkin
JP4963906B2 (en) * 2006-09-06 2012-06-27 花王株式会社 Absorbent articles
JP4749288B2 (en) * 2006-09-06 2011-08-17 花王株式会社 Absorbent articles
2008-03-31 JP JP2008092750A patent/JP5279318B2/en active Active
2009-02-20 US US12/933,732 patent/US20110071486A1/en not_active Abandoned
2009-02-20 BR BRPI0906305A patent/BRPI0906305A2/en not_active IP Right Cessation
2009-02-20 WO PCT/JP2009/053612 patent/WO2009122830A1/en active Application Filing
2009-02-20 EP EP09728464A patent/EP2260810A4/en not_active Withdrawn
2009-02-20 CN CN200980111187XA patent/CN101980677A/en active Search and Examination
2009-02-20 KR KR1020107023940A patent/KR20110009114A/en not_active Application Discontinuation
2009-02-20 EA EA201001370A patent/EA201001370A1/en unknown
2009-02-20 MY MYPI20104384 patent/MY152460A/en unknown
2009-02-20 AU AU2009233103A patent/AU2009233103A1/en not_active Abandoned
2009-02-20 UA UAA201011395A patent/UA102246C2/en unknown
2009-03-31 TW TW098110747A patent/TWI491384B/en active
US20110071486A1 (en) 2011-03-24
TW201012444A (en) 2010-04-01
CN101980677A (en) 2011-02-23
UA102246C2 (en) 2013-06-25
EA201001370A1 (en) 2011-02-28
MY152460A (en) 2014-10-15
WO2009122830A1 (en) 2009-10-08
JP2009240643A (en) 2009-10-22
EP2260810A4 (en) 2011-08-31
TWI491384B (en) 2015-07-11
EP2260810A1 (en) 2010-12-15
AU2009233103A1 (en) 2009-10-08
BRPI0906305A2 (en) 2015-09-22
KR20110009114A (en) 2011-01-27
JP4801035B2 (en) 2011-10-26 Absorbent article and manufacturing method thereof
JP4492957B2 (en) 2010-06-30 Absorbent articles
CN101815487B (en) 2013-05-15 Absorptive article and method of producing absorptive article
JP5258380B2 (en) 2013-08-07 Absorbent articles