WO2016031569A1 - Absorbent and absorbent article including absorbent - Google Patents
Absorbent and absorbent article including absorbent Download PDFInfo
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- WO2016031569A1 WO2016031569A1 PCT/JP2015/072788 JP2015072788W WO2016031569A1 WO 2016031569 A1 WO2016031569 A1 WO 2016031569A1 JP 2015072788 W JP2015072788 W JP 2015072788W WO 2016031569 A1 WO2016031569 A1 WO 2016031569A1
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- absorbent
- thermoplastic resin
- core
- absorbent body
- absorber
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/539—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers
Definitions
- the present invention relates to an absorbent body and an absorbent article including the absorbent body.
- Absorbent articles such as disposable diapers are commercially available in which the absorber contains a large amount of superabsorbent polymer for the purpose of absorbing the excrement of the wearer, for example, a large amount of urine.
- the absorber containing a large amount of the superabsorbent polymer has a biased position of the superabsorbent polymer during use, the superabsorbent polymer falls off the absorber, or the absorber tends to lose its shape as it absorbs liquid, etc. There was a problem.
- an absorbent holding layer comprising fluff pulp, a superabsorbent polymer, and a heat-sealable synthetic resin fiber, and a surface of the absorption holding layer on the surface sheet side are arranged and heat-fused.
- Examples include an absorbent body having a nonwoven fabric layer made of adhesive synthetic resin fibers (Patent Document 1, Patent Document 2, etc.).
- Patent Document 1 and Patent Document 2 the heat-fusible synthetic resin fibers contained in the absorption holding layer are entangled or heat-fused with each other, and the heat-fusible synthetic resin fibers contained in the absorption holding layer are used. And the heat-fusible synthetic resin fiber contained in the nonwoven fabric layer are heat-sealed.
- an object of the present invention is to provide an absorbent body that is soft and hardly folds and is not easily deformed.
- the present disclosure is an absorbent article for absorbent articles having a longitudinal direction and a width direction, wherein the absorbent body includes an absorbent core having a first surface and a second surface on the opposite side.
- the absorbent core includes a thermoplastic resin fiber, a cellulosic water-absorbing fiber, and a superabsorbent polymer, and at least a part of the thermoplastic resin fiber is exposed on the first surface of the absorbent core.
- a second portion exposed on the second surface of the absorbent core, a connecting portion connecting the first portion and the second portion, and the absorbent body is bent at 85% or more.
- An absorber characterized by having a post-restoration rate has been found.
- the absorbent body of the present invention is soft, hardly folds, and is not easily deformed.
- FIG. 1 is a plan view of an absorbent article, specifically, a tape-type disposable diaper 1 including an absorbent body according to one of the embodiments of the present disclosure.
- FIG. 2 is a plan view of the absorbent body 3 of the tape-type disposable diaper 1 shown in FIG.
- FIG. 3 is a partial cross-sectional view of the absorber 3 shown in FIG. 2 taken along the line III-III.
- FIG. 4a is a plan view of an absorbent body 3 according to another embodiment of the present disclosure.
- FIG. 4b is a plan view of the absorbent body 3 according to another embodiment of the present disclosure.
- FIG. 5 is a partial cross-sectional view taken along the line VV of FIG.
- FIG. 6 is a partial cross-sectional view taken along the line VI-VI in FIG.
- FIG. 7 is a diagram for explaining a method of manufacturing an absorbent body and an absorbent article according to one embodiment of the present disclosure.
- FIG. 8 is a diagram for explaining a method of measuring tensile
- thermoplastic resin fibers As used herein, “exposed” with respect to thermoplastic resin fibers means that the thermoplastic resin fibers are present on the first surface of the absorbent core or the second surface of the absorbent core.
- thermoplastic resin fibers and cellulose-based water-absorbing fibers other than pulp are defined in “A7” in Annex A of JIS L 1015: 2010. .1 Measurement of fiber length "according to” A7.1.1 Method of measuring length of individual fibers on glass plate with A method (standard method) scale ". The above method is a test method corresponding to ISO 6989 issued in 1981.
- the average fiber length of the pulp means a weight-weighted average fiber length, and is obtained from Kajaani Fiber Lab fiber properties (off-line) manufactured by Metso Automation. Mean L (w) value to be measured.
- the absorbent body of the present disclosure is an absorbent body for absorbent articles having a longitudinal direction and a width direction.
- the absorbent body includes an absorbent core having a first surface and a second surface opposite to the first surface, and the absorbent core includes thermoplastic resin fibers, cellulosic water-absorbing fibers, and a superabsorbent polymer. .
- thermoplastic resin fiber is exposed to the first surface of the absorbent core, and the second portion is exposed to the second surface of the absorbent core.
- a connecting portion that connects the first portion and the second portion.
- the above-mentioned 1st part, 2nd part, and connection part may be called "specific fiber orientation.”
- the first surface and the second surface of the absorbent core are assumed to be a wearer-side surface and a clothing-side surface, respectively.
- FIG. 1 is a plan view of an absorbent article, specifically, a tape-type disposable diaper 1 including an absorbent body according to one of the embodiments of the present disclosure.
- the tape-type disposable diaper 1 shown in FIG. 1 includes a top sheet 2 as a liquid-permeable layer, an absorber 3, and a liquid-impermeable back sheet 4 as a liquid-impermeable layer.
- the tape-type disposable diaper 1 shown by FIG. 1 is demonstrated in detail in the location of the below-mentioned absorbent article.
- FIG. 2 is a plan view of the absorbent body 3 of the tape-type disposable diaper 1 shown in FIG. 1
- FIG. 3 is a partial cross-sectional view of the absorbent body 3 shown in FIG.
- the absorbent body 3 includes an absorbent core 5, a first core wrap 11 that covers the first surface 9 of the absorbent core 5, and a second core wrap 12 that covers the second surface 10 of the absorbent core 5.
- the absorbent core 5 includes a thermoplastic resin fiber 6, a cellulosic water absorbent fiber 7, and a superabsorbent polymer 8.
- thermoplastic resin fiber 6 is thick and long, and the cellulosic water-absorbing fiber 7 is shown thinner and shorter than the thermoplastic resin fiber 6, but the actual fiber thickness is shown. And does not reflect the length.
- the thermoplastic resin fiber 6 ′ includes a first portion 6 ′ a exposed on the first surface 9 of the absorbent core 5 and a second portion 6 ′ b exposed on the second surface 10 of the absorbent core 5. And a connecting portion 6'c that connects the first portion 6'a and the second portion 6'b. More specifically, the thermoplastic resin fiber 6 ′ has a first portion 6′a exposed on the first surface 9 of the absorbent core 5 at one end (the left end toward the end) and the other end. The second portion 6′b exposed to the second surface 10 of the absorbent core 5, the first portion 6′a, and the second portion 6′b are connected to the end portion (the right end portion). And a connecting portion 6'c.
- thermoplastic resin fiber 6 ′′ has a first portion 6 ′′ a exposed on the first surface 9 of the absorbent core 5 at one end portion (the left end portion) and one end portion.
- the second portion 6 ′′ b and the first portion 6 that are exposed on the second surface 10 of the absorbent core 5 between (the left-side end) and the other end (the right-side end). and a connecting portion 6''c that connects '' a and the second portion 6''b.
- the absorbent body 3 shown in FIG. 3 includes an adhesive portion (not shown) between the first surface 9 of the absorbent core 5 and the first core wrap 11, and the thermoplastic resin fibers 6 ′ and 6 ′′. 1 part 6'a and 6''a are connected with the 1st core wrap 11 via the adhesion part (not shown). Further, the absorbent body 3 shown in FIG. 3 includes an adhesive portion (not shown) between the second surface 10 of the absorbent core 5 and the second core wrap 12, and thermoplastic resin fibers 6 ′ and 6 ′′. The second portions 6′b and 6 ′′ b are connected to the second core wrap 12 via an adhesive portion (not shown).
- thermoplastic resin fibers 6 'and 6' ' act as elastic bodies to some extent, when a force is applied to the absorber 3 (absorbing core 5) and the absorber 3 (absorbing core 5) is deformed, the thermoplastic resin fibers 6 'and 6' 'extend. Next, when the force applied to the absorbent body 3 (absorbing core 5) is removed, the stretched thermoplastic resin fibers 6 'and 6' 'are contracted, and the shape of the absorbent body 3 (absorbing core 5) is quickly formed. To restore. In other words, the thermoplastic resin fibers 6 ′ and 6 ′′ inside the absorbent body 3 (absorbing core 5) exhibit a restoring force.
- thermoplastic resin fibers 6 ′ and 6 ′′ The resilience is higher as the first portions 6′a and 6 ′′ a of the thermoplastic resin fibers 6 ′ and 6 ′′ are connected to the first core wrap 11, and the thermoplastic resin fibers 6 ′ and 6 are increased.
- the second portions 6 ′ b and 6 ′′ b of ′′ become higher as they are connected to the second core wrap 12. Since a part of the thermoplastic resin fibers 6 ′ and 6 ′′ are fixed to the first core wrap 11 and / or the second core wrap 12, the thermoplastic resin fibers 6 ′ and 6 ′′ function more as an elastic body. This is because it becomes easier. As a result, it is difficult for the absorbent body 3 (absorbing core 5) to be folded, and it is difficult to lose its shape.
- the adhesive portion is formed without particular limitation by an adhesive known in the art.
- the adhesive can be applied by a coating method such as spiral coating, coater coating, curtain coater coating, or summit gun coating.
- the absorbent body 3 shown in FIG. 3 includes an absorbent core 5, a first core wrap 11 that covers the first surface 9 of the absorbent core 5, and a second core wrap 12 that covers the second surface 10 of the absorbent core 5.
- the absorbent body of the present disclosure may not include a core wrap. That is, the absorption core may constitute the absorber.
- the absorbent body i.e. the absorbent core, be connected via an adhesive to a layer adjacent to its wearer side, e.g. a liquid permeable layer, and It is preferably connected to a layer adjacent to the clothing side, for example, a liquid-impermeable layer. This is because the thermoplastic resin fiber having a specific fiber orientation is fixed to the layer adjacent to the wearer side and / or the layer adjacent to the clothing side, and thus functions more easily as an elastic body.
- the thermoplastic resin fiber having a specific fiber orientation functions as a skeleton for holding other components of the absorbent body, for example, the cellulosic water-absorbing fiber, and improves the strength of the absorbent body.
- the absorbent body of the present disclosure is less likely to cause delamination within the absorbent body when a force such as body pressure is applied, and an absorbent body that does not contain the thermoplastic resin fibers, for example, only pulp. It is harder to squeeze than an absorbent containing.
- the thermoplastic resin fiber having a specific fiber orientation suppresses the movement of the superabsorbent polymer contained in the absorbent body, and the superabsorbent polymer falls off the absorbent body (absorbent core). To suppress. Therefore, it is difficult for the superabsorbent polymer to be unintentionally unevenly distributed. As a result, after absorbing the liquid, the absorbent body is unlikely to expand unintentionally.
- the absorbent body of the present disclosure even when absorbing a large amount of liquid, because the thermoplastic resin fibers retain the shape of the absorbent body, the absorbent body is not easily deformed, for example, into a plurality of pieces It is difficult to divide.
- the strength of the absorbent body is improved without being caused by thermal fusion of the thermoplastic resin fibers. Therefore, the absorbent body of the present disclosure is softer than the absorbent body described in Patent Document 1. Therefore, the wearer who wears the absorbent article hardly feels uncomfortable.
- the absorbent body of the present disclosure is preferably 85% or more, more preferably 88% or more, still more preferably 90% or more, and even more preferably 92% or more after restoration from the viewpoint of difficulty in folding.
- the upper limit of the post-bending restoration rate is generally 100%, but may exceed 100%.
- the restoration rate after bending is measured as follows. (1) The absorber is cut into a length of 100 mm ⁇ width of 50 mm (longitudinal direction ⁇ width direction) to prepare a sample. (2) The initial angle ⁇ 0 of the sample is measured. The initial angle ⁇ 0 (°) is an angle formed by an inner surface, which will be described later, at both ends of a folding shaft, which will be described later, before folding. (3) The surface of the sample contacting the wearer (hereinafter referred to as “inner surface”) with reference to an axis passing through the center in the longitudinal direction of the sample and parallel to the width direction (hereinafter referred to as “folding axis”). Fold it up inside.
- the absorbent core preferably has a bending resistance of 3.0 N or less, more preferably 2.0 N or less, still more preferably 1.5 N or less, and even more preferably 1.0 N or less. From the viewpoint of the softness of the absorbent core and by extension the absorbent body.
- the bending resistance is measured as follows.
- matters not described are in accordance with “6.7.4 Gurley method” of JIS L 1913: 2010 “General nonwoven fabric test method”.
- a 311 Gurley type flexibility tester is prepared in a constant temperature and humidity chamber of 65% RH at 20 ° C.
- the sample is cut into a size of 38 mm ⁇ 25 mm (longitudinal direction ⁇ width direction) to prepare a measurement sample.
- the sample is set on a Gurley-type flexibility tester, and the bending resistance is measured (first time).
- the front and back of the sample are reversed and set on a Gurley-type flexibility tester, and the bending resistance is measured (second time).
- An average value of the two measured values of the bending resistance is calculated.
- the above measurement is repeated 5 times in total, and the average of the above average values is adopted as the bending resistance.
- the tensile strength in the thickness direction of the absorbent core is preferably 100 Pa or more, more preferably 150 Pa or more, still more preferably 200 Pa or more, and even more preferably 250 Pa or more.
- the tensile strength is less than 100 Pa, the amount of the thermoplastic resin fiber having a specific fiber orientation is small, the strength in the thickness direction of the absorbent core is weak, and as a result, the absorbent core may be easily twisted.
- the upper limit of the tensile strength in the thickness direction of the absorbent core is not particularly limited, but is 3,000 Pa or less from the viewpoint of softness.
- the tensile strength in the thickness direction of the absorbent body is also preferably in the above range.
- the tensile strength is measured as follows using the apparatus shown in FIG. (1) A pair of acrylic jigs 401 (diameter 68 mm, mass of each jig: 200 g, height of the gripping part 401 a: 50 mm) is prepared. (2) A sample 402 having a diameter of 68 mm is prepared from the absorber. (3) Prepare two sheets of double-sided tape 403 (manufactured by 3M, adhesive transfer tape 950) cut out to a diameter of 68 mm.
- the sample 402 is fixed to a pair of jigs 401 using two double-sided tapes 403.
- a pair of jigs 401 having the sample 402 is placed on the holding table 405, and a weight 404 (10.5 kg) is placed thereon, and left for 3 minutes.
- a pair of jigs 401 are set in a tensile tester (Shimadzu Corporation, AG-1kNI) with a gripping interval of 70 mm.
- the thermoplastic resin fiber having a specific fiber orientation is preferably 2 times or more, more preferably 3 times or more, and further preferably 4 times the thickness of the absorbent core (or absorbent body).
- the average fiber length is more preferably 5 times or more, and still more preferably 7 times or more. If the magnification is less than 2 times, it becomes difficult for the thermoplastic resin fibers to be exposed on both the first surface of the absorbent core and the second surface of the absorbent core. May be difficult to improve.
- the thermoplastic resin fiber having a specific fiber orientation is preferably 30 times or less, more preferably 20 times or less, and even more preferably 15 times or less the thickness of the absorbent core. Has an average fiber length.
- magnification is more than 30 times, the opening of the thermoplastic resin fibers becomes insufficient, the uniformity of the absorbent core is hindered, and the restorability after bending of the absorbent body may be difficult to improve.
- the thermoplastic resin fibers having a specific fiber orientation preferably have an average fiber length of 6 to 70 mm, more preferably 10 to 50 mm, and even more preferably 15 to 40 mm.
- the average fiber length is less than 6 mm, the thermoplastic resin fibers tend to be difficult to be exposed on both the first surface of the absorbent core and the second surface of the absorbent core, and the thermoplastic resin fibers are
- a thermoplastic resin fiber becomes intertwined with other fibers, the thermoplastic fiber is fixed, and it becomes easy to function as an elastic body, so that the restorability after folding of the absorbent body is improved.
- the average fiber length exceeds 70 mm, the opening property of the thermoplastic resin fiber is remarkably lowered, and the absorbent body includes a thermoplastic resin fiber that has not been opened, thereby reducing the uniformity of the absorbent body. In some cases, it is difficult to improve the restorability of the absorber after bending.
- the said average fiber length is especially preferable when the absorber of this indication is mixed with a cellulosic water absorption fiber, for example, a pulp by an airlaid system.
- the thermoplastic resin fiber preferably has a fineness of 0.5 to 10 dtex, and more preferably 1.5 to 5 dtex.
- the openability of the thermoplastic resin fibers may be reduced, and when the fineness exceeds 10 dtex, the number of thermoplastic resin fibers decreases, and other thermoplastic resins. There is a tendency that the number of points entangled with fibers and / or cellulosic water-absorbing fibers is reduced.
- the preferred thickness of the absorbent body of the present disclosure varies depending on the use of the absorbent body, but generally has a thickness of 0.1 to 15 mm, preferably 1 to 12 mm, and more preferably 2 to 6 mm. .
- the thickness (mm) of the absorber is measured as follows.
- FS-60DS Measurement surface 44 mm (diameter), measurement pressure 3 g / cm 2 ] manufactured by Daiei Kagaku Seisakusho Co., Ltd. is prepared and absorbed under standard conditions (temperature 23 ⁇ 2 ° C., relative humidity 50 ⁇ 5%). Pressurize five different parts of the body, measure the thickness of each part 10 seconds after pressurization, and take the average of the five measured values as the thickness of the absorber.
- the absorbent body of the present disclosure is preferably 5 to 50 parts by weight and 50 to 95 parts by weight, and more preferably, based on a total of 100 parts by weight of the thermoplastic resin fibers and the cellulosic water absorbent fibers, respectively. Is contained in a ratio of 10 to 40 parts by mass and 60 to 90 parts by mass.
- the ratio of the thermoplastic resin fibers is less than 5 parts by mass, the absolute amount of the thermoplastic resin fibers functioning as an elastic body is decreased, and as a result, it may be difficult to improve the restorability after bending of the absorbent body.
- the ratio of the thermoplastic resin fibers exceeds 50 parts by mass, the amount of the cellulose-based water-absorbing fibers having excellent water absorption decreases, so that the absorbability of the absorbent body tends to be insufficient.
- the absorbent bodies of the present disclosure generally have a basis weight of 20 to 1000 g / m 2 , preferably 50 to 800 g / m 2 , and more preferably 100 to 500 g / m 2 . This is from the viewpoint of the strength and absorbability of the absorber.
- the absorbent of the present disclosure preferably has a density of 0.06 to 0.14 g / cm 3 , more preferably 0.07 to 0.12 g / cm 3 , and even more preferably 0.08 to 0.1 g / cm 3 .
- the density can be calculated from the basis weight and thickness of the absorber.
- the said basic weight is measured according to "6.2 Mass per unit area (ISO method)" of JIS L 1913: 2010.
- the absorbent body of the present disclosure has a flat surface on the liquid-impermeable layer side from the viewpoint of strength of connection between the absorbent body and a layer adjacent to the clothing side, for example, a liquid-impermeable layer.
- a liquid-impermeable layer For example, it is preferable to have a surface that does not have a groove or the like.
- thermoplastic resin fibers are not fused with the cellulosic water-absorbing fibers and / or other thermoplastic resin fibers. Moreover, in the absorbent body of the present disclosure, it is preferable that the thermoplastic resin fiber is intertwined with the cellulosic water-absorbing fiber and / or other thermoplastic resin fiber. This is because the absorber can be deformed to some extent and the wearer feels soft. Note that this is not the case with respect to the embossed portion described later.
- the absorbent body according to another embodiment of the present disclosure has a plurality of embossed portions that are formed by embossing at least the absorbent core and arranged at intervals from the viewpoint of recoverability after folding.
- FIG. 4A is a plan view of an absorber 3 according to another embodiment of the present disclosure
- FIG. 5 is a partial cross-sectional view taken along the line VV of FIG.
- the absorbent body 3 shown in FIGS. 4A and 5 includes an absorbent core 5, a first core wrap 11 that covers the first surface 9 of the absorbent core 5, and a second core wrap that covers the second surface 10 of the absorbent core 5.
- 12 is the same as the absorbent body 3 shown in FIGS. 2 and 3 except that it has a plurality of dot-like embossed portions 21 formed by embossing 12 and arranged at intervals.
- thermoplastic resin fibers 6, 6 ′, 6 ′′ and 6 ′ ′′ are taken into the embossed portion 21, and the thermoplastic resin fibers 6, 6 ′, 6 ′′ and 6 ′′ ′ are connected via the embossed portion 21.
- the absorbent body 3 is equivalent to containing thermoplastic resin fibers having a substantially longer average fiber length, and the thermoplastic resin fibers 6, 6 ′, 6 ′′ and 6 ′ ′′ are more elastic as elastic bodies. It functions and the bending recovery property of the absorber is further improved.
- thermoplastic resin fibers 6, 6 ′, 6 ′′, and 6 ′′ are also included. 'Functions more as an elastic body, and the bending recovery of the absorber is further improved.
- the thermoplastic resin fiber may or may not be fused with other fibers in the embossed portion, but preferably Are fused. This is because the thermoplastic resin fibers are fused with other fibers, in particular, other heat-fusible fibers, so that the above-described effects can be easily obtained.
- the thermoplastic resin fibers are fused with the cellulosic water-absorbing fibers and / or other thermoplastic resin fibers in the non-embossed portions that do not have the embossed portions. Preferably not. This is because the absorber tends to become hard.
- the area ratio of the plurality of embossed portions to the area of the absorbent body is preferably 1 to 20%, more preferably 2 to 15%, and even more preferably. 3 to 10%.
- the area ratio is less than 1%, the action of the embossed portion tends not to appear, and when the area ratio exceeds 10%, the wearer tends to feel firmness to the absorbent body.
- the “area of the absorber” and “area of the embossed portion” mean the area when the absorber is viewed in plan.
- the shape of the embossed portions is not particularly limited, and examples of the shape of the embossed portions include a dotted embossed portion and a linear embossed portion. It is done.
- examples of the dot-like embossed portion include circular, oval, rectangular, triangular, star-shaped, heart-shaped embossed portions.
- the arrangement of the embossed portions is not particularly limited, and examples thereof include a zigzag pattern such as a square zigzag pattern and a 60 ° zigzag pattern.
- the interval between the plurality of embossed portions is preferably not more than 2.0 times the average fiber length of the thermoplastic resin fibers, more preferably the average of the thermoplastic resin fibers. 1.0 times or less of the fiber length, more preferably 0.7 times or less of the average fiber length of the thermoplastic resin fibers, and even more preferably 0.5 times or less of the average fiber length of the thermoplastic resin fibers.
- the interval is longer than 2.0 times the average fiber length of the thermoplastic resin fibers, the thermoplastic resin fibers fixed to different embossed portions are not entangled with each other, and it is difficult to improve the restorability after folding of the absorbent body. Further, if the interval is 0.5 times or less of the average fiber length of the thermoplastic resin fibers, one thermoplastic resin fiber may be fixed to a plurality of embossed portions, so that the absorber is bent. Post-restorability is easy to improve.
- the area of each embossed portion is preferably 0.1 to 20.0 mm 2 , more preferably 1.0 to 15.0 mm 2 , and even more preferably. Has an area of 2.0-10.0 mm 2 .
- the area is less than 0.1 mm 2 , the shape of the tip of the embossing roll projection when forming the embossed part becomes sharp, the absorber may be broken, and when the area exceeds 20.0 mm 2 , Absorber tends to harden.
- the dot-like embossed portion as shown in FIG. 4A pushes the dot-like protrusions on the wearer-side surface of the absorbent body, that is, the first surface side of the absorbent core. It is preferably formed by applying. It is because an absorber is easy to follow a wearer's body line because an absorber has a point-like embossed part formed from a wearer side surface. A specific method for forming the embossed portion will be described in the section “Manufacturing method”.
- FIG. 4B is a plan view of an absorber according to another embodiment of the present disclosure.
- the absorbent body 3 shown in FIG. 4B includes an absorbent core 5, a first core wrap 11 that covers the first surface 9 of the absorbent core 5, and a second core wrap 12 that covers the second surface 10 of the absorbent core 5. It has a plurality of linear embossed portions 21 formed by embossing and arranged at intervals. The linear embossed portion 21 extends in the longitudinal direction of the absorber 3.
- the linear embossed portion as shown in FIG. 4B presses the linear protrusion on the clothing side surface of the absorbent body, that is, the second surface side of the absorbent core. It is preferable that it is formed by this. It is because it becomes easy to restore
- a specific method for forming the embossed portion will be described in the section “Manufacturing method”.
- the embossing part 21 is formed by embossing the absorption core 5, the 1st core wrap 11, and the 2nd core wrap 12.
- the embossed portion is formed by embossing only the absorbent core.
- the absorbent body of the present disclosure includes the first core wrap and the second core wrap
- the first core wrap and the second core wrap are continuous, that is, the first core wrap and the second core wrap are formed from one sheet. It may be.
- the first core wrap and the second core wrap may be discontinuous, that is, the first core wrap and the second core wrap may be formed from a plurality of sheets.
- thermoplastic resin fibers examples include those containing a single component, for example, single fibers, or those containing a plurality of components, for example, composite fibers.
- the above components include polyethylene, polypropylene, polybutylene, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, ethylene-acrylic acid copolymer, polyolefin such as ionomer resin; polyethylene terephthalate (PET), poly Examples include butylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polyester such as polylactic acid; polyamide such as nylon.
- the composite fibers include, for example, composite fibers such as core-sheath fibers, side-by-side fibers, and island / sea fibers; hollow fibers; irregular fibers such as flat, Y-type, and C-types; latent crimps or manifestations Crimped three-dimensional crimped fibers; examples include split fibers that are split by a physical load such as water flow, heat, embossing, and the like, and core-sheath fibers that are obtained industrially inexpensively and have high safety, particularly PET / PE, PP / PE (core / sheath) and the like are preferable.
- composite fibers such as core-sheath fibers, side-by-side fibers, and island / sea fibers
- hollow fibers such as irregular fibers such as flat, Y-type, and C-types
- latent crimps or manifestations Crimped three-dimensional crimped fibers examples include split fibers that are split by a physical load such as water flow, heat,
- the mass ratio of the core component / sheath component is preferably 10/90 to 90/10, and more preferably 30/70 to 70/30.
- the ratio of the sheath component is small, the fusibility decreases, and when the ratio of the sheath component increases, the spinnability tends to decrease.
- cellulose-based water-absorbing fibers examples include pulps such as wood pulp obtained from conifers or hardwoods, bagasse, kenaf, bamboo, hemp, cotton (for example, cotton linters) and other non-wood pulps; Cellulose fibers; semi-synthetic fibers such as acetate fibers.
- pulps such as wood pulp obtained from conifers or hardwoods, bagasse, kenaf, bamboo, hemp, cotton (for example, cotton linters) and other non-wood pulps
- Cellulose fibers Cellulose fibers
- semi-synthetic fibers such as acetate fibers.
- the kraft pulp obtained industrially cheaply and high safety is preferable.
- the average fiber length of the cellulosic water-absorbing fiber is not particularly limited.
- the cellulose water-absorbing fiber is a regenerated cellulose fiber, semi-synthetic fiber or the like, it can have an average fiber length of 3 to 70 mm, 5 to 50 mm, 10 to 40 mm or the like.
- the regenerated cellulose fiber, semi-synthetic fiber, and the like have a function similar to that of a thermoplastic resin fiber when dried, and can impart bending resilience to the absorbent body.
- the absorbent of the present disclosure contains the superabsorbent polymer in a range of preferably 5 to 80% by mass, more preferably 10 to 60% by mass, and even more preferably 20 to 40% by mass of the total mass of the absorbent core. Including.
- the superabsorbent polymer include starch-based, cellulose-based, and synthetic polymer-based, for example, acrylic acid-based superabsorbent polymers.
- the absorber according to another embodiment of the present disclosure has the following configuration.
- An absorbent body for an absorbent article wherein the absorbent body includes an absorbent core, and the absorbent core includes a thermoplastic resin fiber, a cellulosic water-absorbing fiber, and a superabsorbent polymer, and the thermoplastic resin.
- Each configuration is as described above.
- An absorbent article includes a liquid-permeable layer, a liquid-impermeable layer, and an absorbent body provided between the liquid-permeable layer and the liquid-impermeable layer.
- the first surface is directed toward the liquid-permeable layer side, and the second surface of the absorbent core is disposed toward the liquid-impermeable layer.
- the absorbent body is as described above.
- the cellulosic water-absorbing fibers contained in the absorber are related to the absorbency and liquid retention of the absorber, and the thermoplastic resin fibers contained in the absorber are: Connection with a liquid-permeable layer and / or liquid-impermeable, in particular, connection with a liquid-impermeable layer, providing recovery after folding of the absorbent article, and an absorbent body, and thus an absorbent article Gives softness to
- FIG. 1 is a plan view of an absorbent article including an absorbent body according to one of the embodiments of the present disclosure, specifically, a tape-type disposable diaper 1, and FIG. It is sectional drawing.
- the tape-type disposable diaper 1 shown in FIG. A tape-type disposable diaper 1 shown in FIG. 1 has a top sheet 2 as a liquid-permeable layer, an absorber 3, and a back sheet 4 as a liquid-impermeable layer.
- the absorber 3 is the same as that shown in FIG.
- the tape-type disposable diaper 1 shown in FIG. 1 has a pair of three-dimensional gathers 41 including a stretchable member 41 a and a fastener 42.
- FIG. 1 also shows a pair of elastic members 42 disposed between the sheet constituting the three-dimensional gather 41 and the back sheet 4.
- the tape-type disposable diaper 1 shown in FIG. 6 has an adhesive portion (not shown) for connecting the top sheet 2 and the absorbent body 3 between the top sheet 2 and the absorbent body 3, and the absorbent body 3. And between the back sheet
- the first portions 6 ′ a and 6 ′′ a of the thermoplastic resin fibers 6 ′ and 6 ′′ are bonded to an adhesive portion (not shown) and the first core wrap 11.
- the second portions 6′b and 6 ′′ b of the thermoplastic resin fibers 6 ′ and 6 ′′ are connected to an adhesive portion (not shown) and the second core wrap 12. It is being fixed to the back seat
- the thermoplastic resin fibers 6 ′ and 6 ′′ connected to the top sheet 2 and the back sheet 4 function as an elastic body, and the tape-type disposable diaper 1 is excellent in recoverability after bending.
- the linear embossed portion is formed by pressing a linear protrusion from the second surface side of the absorbent core. It is preferable. It is because it becomes easy to restore
- the absorbent body of the present disclosure includes a thermoplastic resin fiber and a cellulosic water-absorbing fiber, and at least a part of the thermoplastic resin fiber is exposed on the first surface of the absorbent core; Any method having a second part exposed on the second surface of the core can be used, and any method known in the art can be used.
- the absorbent article of this indication can be manufactured by a well-known method in this technical field except including the above-mentioned absorber.
- production examples of the absorbent article of the present disclosure will be described.
- FIG. 7 is a diagram for explaining a method of manufacturing an absorbent body and an absorbent article according to one embodiment of the present disclosure.
- the method shown in FIG. 7 includes a first step (I) and a second step (II).
- the thermoplastic resin fibers and the cellulosic water-absorbing fibers are not distinguished from each other.
- a plurality of recesses 153 extending from the peripheral surface 151a toward the center of the suction drum are formed at a predetermined pitch on the peripheral surface 151a of the suction drum 151 that rotates in the machine direction MD. Yes.
- the absorber material supplied from the material supply unit 152 is deposited in the recess 153 by the suction of the suction unit 156.
- the material supply unit 152 with the hood 152a is formed so as to cover the suction drum 151, and the material supply unit 152 supplies the mixture 21 of cellulosic water-absorbing fibers and thermoplastic resin fibers to the recesses 153 by air conveyance. To do.
- the material supply unit 152 includes a particle supply unit 158 that supplies the superabsorbent polymer particles 22, and supplies the superabsorbent polymer particles 22 to the recesses 153.
- a mixture 21 of cellulose-based water-absorbing fibers and thermoplastic resin fibers and superabsorbent polymer particles 22 (hereinafter referred to as “absorber raw material”) are deposited in the recess 153 in a mixed state, and the absorber 226 is placed in the recess 153. It is formed.
- the hood 152a of the material supply unit 152 is on the downstream side in the machine direction MD (upstream side of the deposition of the absorber raw material), It has a larger deposition space 152b than a hood commonly used in the art.
- thermoplastic resin fiber By doing in this way, there exists a tendency for a thermoplastic resin fiber to accumulate in the depth direction of the recessed part 153, ie, the direction which goes to the center from the surrounding surface 151a of the suction drum 151.
- FIG. Paying attention to the absorber material and the recess 153, the absorber material tends to be deposited in order from the recess portion 153a on the downstream side of the rotation of the suction drum in the recess toward the recess portion 153b on the upstream side of the rotation.
- a plastic resin fiber There exists a tendency for a plastic resin fiber to have the above-mentioned specific fiber orientation.
- the suction force of the suction drum on the upstream side of the deposition of the absorber material is made higher than that on the downstream side of the deposition of the absorber material.
- a fiber becomes easy to have the above-mentioned specific fiber orientation.
- the thermoplastic resin fiber is likely to have the above-mentioned specific fiber orientation by making the rotation speed of the suction drum slower than the flow rate of the absorbent material.
- the carrier sheet 150 will later form a second core wrap, but in embodiments where the absorbent article does not have a core wrap, a liquid permeable layer, a liquid impermeable layer, an optional auxiliary sheet or the like may be used as the carrier sheet. it can.
- the first core wrap sheet 229 is supplied from the roll 227, and the adhesive applied from the coating machine 229 is applied to the first core wrap sheet 229, and then stacked on the absorbent body 226, and the stack 230. Form.
- step (II) In the second step (II), in the embossing step, the stack 230 is embossed using a pair of embossing rolls 301 and 302, and an embossed portion is formed on the stack 230. In the subsequent cutting process, the stacked body 230 is cut into a predetermined shape using a pair of rolls 303 and 304, and the absorbent body 305 is manufactured. Since other steps can be performed by a known method, description thereof is omitted.
- the temperature of the embossing roll in the embossing step is preferably in a predetermined relationship with the melting point of the thermoplastic resin fibers constituting the absorber.
- the temperature may be a temperature at which a part of the thermoplastic resin fiber is melted.
- the temperature is It suffices if the temperature is at least a temperature at which a part starts melting.
- the temperature of the embossing roll in the embossing process is usually 30 to 160 ° C., preferably 30 to 140 ° C.
- the pressure is usually 10 to 3000 N / mm, preferably 50 to 500 N / mm
- the treatment time is usually 0.0001. ⁇ 5 seconds, preferably 0.005 to 2 seconds.
- thermoplastic resin fiber was a core-sheath fiber having a core of polyethylene terephthalate and a sheath of polyethylene, an average fiber length of 30 mm, and a fineness of 2.2 dtex.
- the absorbent core having an unadjusted thickness is passed through a pair of flat rolls, and the thickness is adjusted. 1 was produced.
Abstract
Description
特許文献2も同様である。
従って、本発明は、柔らかく、そして折りぐせが付きにくく、型崩れしにくい吸収体を提供することを目的とする。 In
The same applies to
Therefore, an object of the present invention is to provide an absorbent body that is soft and hardly folds and is not easily deformed.
・「露出」
本明細書では、熱可塑性樹脂繊維に関する「露出」は、熱可塑性樹脂繊維が、吸収コアの第1面又は吸収コアの第2面に存在することを意味する。 [Definition]
・ "Exposure"
As used herein, “exposed” with respect to thermoplastic resin fibers means that the thermoplastic resin fibers are present on the first surface of the absorbent core or the second surface of the absorbent core.
本開示では、熱可塑性樹脂繊維、並びにセルロース系吸水性繊維のうち、パルプ以外のもの、例えば、再生セルロース繊維及び半合成繊維の平均繊維長は、JIS L 1015:2010の附属書Aの「A7.1 繊維長の測定」の「A7.1.1 A法(標準法)目盛りが付いたガラス板上で個々の繊維の長さを測定する方法」に従って測定する。
なお、上記方法は、1981年に発行されたISO 6989に相当する試験方法である。 ・ "Average fiber length"
In the present disclosure, the average fiber lengths of thermoplastic resin fibers and cellulose-based water-absorbing fibers other than pulp, for example, regenerated cellulose fibers and semi-synthetic fibers, are defined in “A7” in Annex A of JIS L 1015: 2010. .1 Measurement of fiber length "according to" A7.1.1 Method of measuring length of individual fibers on glass plate with A method (standard method) scale ".
The above method is a test method corresponding to ISO 6989 issued in 1981.
本開示では、パルプの平均繊維長は、重さ加重平均繊維長を意味し、メッツォオートメーション(metso automation)社製のカヤーニファイバーラボファイバープロパティーズ(オフライン)[kajaaniFiberLab fiber properties(off-line)]により測定されるL(w)値を意味する。 ・ "Average fiber length"
In the present disclosure, the average fiber length of the pulp means a weight-weighted average fiber length, and is obtained from Kajaani Fiber Lab fiber properties (off-line) manufactured by Metso Automation. Mean L (w) value to be measured.
[吸収体]
本開示の吸収体は、長手方向及び幅方向を有する、吸収性物品用の吸収体である。上記吸収体は、第1面と、その反対側の第2面とを有する吸収コアを備え、当該吸収コアは、熱可塑性樹脂繊維と、セルロース系吸水性繊維と、高吸収性ポリマーとを含む。また、本開示の吸収体では、熱可塑性樹脂繊維の少なくとも一部又は全部が、吸収コアの第1面に露出する第1の部分と、吸収コアの第2面に露出する第2の部分と、第1の部分及び第2の部分を連結する連結部分とを有する。なお、本明細書では、上述の第1の部分と、第2の部分と、連結部分とを、「特定の繊維配向性」と称する場合がある。
吸収コアの第1面及び第2面は、それぞれ、着用者側の面及び着衣側の面を想定している。 Hereinafter, the absorbent body of the present disclosure and the absorbent article including the absorbent body will be described. In addition, the absorber of this indication is demonstrated in the state integrated in the absorbent article as needed.
[Absorber]
The absorbent body of the present disclosure is an absorbent body for absorbent articles having a longitudinal direction and a width direction. The absorbent body includes an absorbent core having a first surface and a second surface opposite to the first surface, and the absorbent core includes thermoplastic resin fibers, cellulosic water-absorbing fibers, and a superabsorbent polymer. . In the absorbent body of the present disclosure, at least a part or all of the thermoplastic resin fiber is exposed to the first surface of the absorbent core, and the second portion is exposed to the second surface of the absorbent core. , And a connecting portion that connects the first portion and the second portion. In addition, in this specification, the above-mentioned 1st part, 2nd part, and connection part may be called "specific fiber orientation."
The first surface and the second surface of the absorbent core are assumed to be a wearer-side surface and a clothing-side surface, respectively.
なお、図1に示されるテープ型使い捨てオムツ1は、後述の吸収性物品の箇所において詳細に説明する。 FIG. 1 is a plan view of an absorbent article, specifically, a tape-type
In addition, the tape-type
図3において、吸収体3は、吸収コア5と、吸収コア5の第1面9を覆う第1コアラップ11と、吸収コア5の第2面10を覆う第2コアラップ12とを備える。図3において、吸収コア5は、熱可塑性樹脂繊維6と、セルロース系吸水性繊維7と、高吸収性ポリマー8とを含む。 FIG. 2 is a plan view of the
In FIG. 3, the
熱可塑性樹脂繊維6'及び6''の一部が、第1コアラップ11及び/又は第2コアラップ12に固定されるため、熱可塑性樹脂繊維6'及び6''が,弾性体としてより機能しやすくなるためである。
その結果、吸収体3(吸収コア5)に折りぐせが付きにくくなり、型崩れがしにくくなる。 The resilience is higher as the
Since a part of the
As a result, it is difficult for the absorbent body 3 (absorbing core 5) to be folded, and it is difficult to lose its shape.
上記接着剤は、例えば、スパイラル塗工、コーター塗工、カーテンコーター塗工、サミットガン塗工等の塗装方法により塗工されうる。 In the absorbent body of the present disclosure, the adhesive portion is formed without particular limitation by an adhesive known in the art.
The adhesive can be applied by a coating method such as spiral coating, coater coating, curtain coater coating, or summit gun coating.
吸収体がコアラップを含まない実施形態では、吸収体、すなわち吸収コアが、接着部を介して、その着用者側に隣接する層、例えば、液透過性層に連結されていることが好ましく、そして/又はその着衣側に隣接する層、例えば、液不透過性層に連結されていることが好ましい。特定の繊維配向性を有する熱可塑性樹脂繊維が、その着用者側に隣接する層及び/又はその着衣側に隣接する層に固定されるため、弾性体としてより機能しやすくなるからである。 The
In embodiments where the absorbent body does not include a core wrap, it is preferred that the absorbent body, i.e. the absorbent core, be connected via an adhesive to a layer adjacent to its wearer side, e.g. a liquid permeable layer, and It is preferably connected to a layer adjacent to the clothing side, for example, a liquid-impermeable layer. This is because the thermoplastic resin fiber having a specific fiber orientation is fixed to the layer adjacent to the wearer side and / or the layer adjacent to the clothing side, and thus functions more easily as an elastic body.
また、本開示の吸収体は、大量の液体を吸収した場合であっても、上記熱可塑性樹脂繊維が吸収体の形状を保持するため、吸収体が型崩れしにくい、例えば、複数の断片に分断しにくい。 Further, in the absorbent body of the present disclosure, the thermoplastic resin fiber having a specific fiber orientation suppresses the movement of the superabsorbent polymer contained in the absorbent body, and the superabsorbent polymer falls off the absorbent body (absorbent core). To suppress. Therefore, it is difficult for the superabsorbent polymer to be unintentionally unevenly distributed. As a result, after absorbing the liquid, the absorbent body is unlikely to expand unintentionally.
In addition, the absorbent body of the present disclosure, even when absorbing a large amount of liquid, because the thermoplastic resin fibers retain the shape of the absorbent body, the absorbent body is not easily deformed, for example, into a plurality of pieces It is difficult to divide.
なお、上記折曲げ後復元率の上限は、一般的には100%であるが、100%を超えてもよい。 The absorbent body of the present disclosure is preferably 85% or more, more preferably 88% or more, still more preferably 90% or more, and even more preferably 92% or more after restoration from the viewpoint of difficulty in folding. Have a rate.
The upper limit of the post-bending restoration rate is generally 100%, but may exceed 100%.
(1)吸収体を長さ100mm×幅50mm(長手方向×幅方向)に裁断し、試料を作成する。
(2)試料の初期角θ0を測定する。初期角θ0(°)は、折曲げ前に、後述の内面が、後述の折軸の両端において形成する角度である。
(3)試料を、試料の長手方向の中心を通り、幅方向に平行な軸(以下、「折軸」と称する)を基準にして、着用者に接する側の面(以下、「内面」と称する)を内側にして折り畳む。 The restoration rate after bending is measured as follows.
(1) The absorber is cut into a length of 100 mm × width of 50 mm (longitudinal direction × width direction) to prepare a sample.
(2) The initial angle θ 0 of the sample is measured. The initial angle θ 0 (°) is an angle formed by an inner surface, which will be described later, at both ends of a folding shaft, which will be described later, before folding.
(3) The surface of the sample contacting the wearer (hereinafter referred to as “inner surface”) with reference to an axis passing through the center in the longitudinal direction of the sample and parallel to the width direction (hereinafter referred to as “folding axis”). Fold it up inside.
(5)1分間放置の後、おもりを取り除き、おもりを取り除いてから1分後に、上記内面が、上記折軸の両端において形成する角度θ1(°)を測定する。
(6)折曲げ後復元率R(%)を、以下の式:
R=100×θ1/θ0
(7)異なる試料で、上述の測定を計5回繰り返し、上記値の平均値を、折曲げ後復元率の値として採用する。
なお、上記測定は、20℃及び相対湿度65%雰囲気の条件下で実施する。 (4) A weight (3.5 kg, bottom size: 10 cm × 10 cm) is placed on the folded sample and left for 1 minute.
(5) After standing for 1 minute, the weight is removed, and 1 minute after removing the weight, the angle θ 1 (°) formed by the inner surface at both ends of the folding shaft is measured.
(6) The post-bending restoration rate R (%) is expressed by the following formula:
R = 100 × θ 1 / θ 0
(7) With the different samples, the above measurement is repeated a total of 5 times, and the average of the above values is adopted as the value of the recovery rate after bending.
In addition, the said measurement is implemented on 20 degreeC and the conditions of a relative humidity 65% atmosphere.
(1)安田精機製作所社製のNo.311ガーレー式柔軟度試験機を20℃の65%RHの恒温恒湿室に準備する。 In the present specification, the bending resistance is measured as follows. In addition, matters not described are in accordance with “6.7.4 Gurley method” of JIS L 1913: 2010 “General nonwoven fabric test method”.
(1) No. manufactured by Yasuda Seiki Seisakusho Co., Ltd. A 311 Gurley type flexibility tester is prepared in a constant temperature and humidity chamber of 65% RH at 20 ° C.
(3)試料を、ガーレー式柔軟度試験機にセットし、剛軟度を測定する(1回目)。次いで、試料の表裏を反対にして、ガーレー式柔軟度試験機にセットし、剛軟度を測定する(2回目)。
上記2回の剛軟度の測定値の平均値を算出する。
(4)異なる試料で、上述の測定を計5回繰り返し、上記平均値の平均を剛軟度として採用する。 (2) The sample is cut into a size of 38 mm × 25 mm (longitudinal direction × width direction) to prepare a measurement sample.
(3) The sample is set on a Gurley-type flexibility tester, and the bending resistance is measured (first time). Next, the front and back of the sample are reversed and set on a Gurley-type flexibility tester, and the bending resistance is measured (second time).
An average value of the two measured values of the bending resistance is calculated.
(4) With the different samples, the above measurement is repeated 5 times in total, and the average of the above average values is adopted as the bending resistance.
本開示の吸収体において、吸収体の厚さ方向の引張強さも、上記範囲にあることが好ましい。 Moreover, in the absorbent body of the present disclosure, the upper limit of the tensile strength in the thickness direction of the absorbent core is not particularly limited, but is 3,000 Pa or less from the viewpoint of softness.
In the absorbent body of the present disclosure, the tensile strength in the thickness direction of the absorbent body is also preferably in the above range.
(1)アクリル製の一対の治具401(直径68mm,各治具の質量:200g,つかみ部401aの高さ:50mm)を準備する。
(2)吸収体から、直径68mmのサンプル402を準備する。
(3)直径68mmに切り抜いた両面テープ403(3M社製,接着剤転写テープ950)を2枚準備する。 In the present disclosure, the tensile strength is measured as follows using the apparatus shown in FIG.
(1) A pair of acrylic jigs 401 (diameter 68 mm, mass of each jig: 200 g, height of the
(2) A
(3) Prepare two sheets of double-sided tape 403 (manufactured by 3M, adhesive transfer tape 950) cut out to a diameter of 68 mm.
(5)サンプル402を有する一対の治具401を、保持台405の上に載せ、その上からおもり404(10.5kg)を載せ、3分間静置する。
(6)引張試験器(島津製作所,AG-1kNI)に、一対の治具401を、つかみ間隔70mmでセットする。 (4) As shown in FIG. 8, the
(5) A pair of
(6) A pair of
(8)異なる試料で、上述の測定を計5回繰り返し、最大引張力(N)の平均値を求め、以下の式:
引張強さ(Pa)=最大引張力の平均値(N)/0.003632(m2)
に従って、引張強さ(Pa)を算出する。
なお、測定は、20℃の条件下で実施する。 (7) A tensile test is performed on the
(8) With different samples, the above measurement was repeated a total of 5 times to obtain the average value of the maximum tensile force (N), and the following formula:
Tensile strength (Pa) = Average value of maximum tensile force (N) /0.003632 (m 2 )
According to the above, the tensile strength (Pa) is calculated.
The measurement is carried out at 20 ° C.
なお、熱可塑性樹脂繊維が、他の繊維と絡み合うことにより、熱可塑性繊維が固定され、弾性体として機能しやすくなり、吸収体の折曲げ後復元性が向上する。 In the absorbent body of the present disclosure, the thermoplastic resin fibers having a specific fiber orientation preferably have an average fiber length of 6 to 70 mm, more preferably 10 to 50 mm, and even more preferably 15 to 40 mm. When the average fiber length is less than 6 mm, the thermoplastic resin fibers tend to be difficult to be exposed on both the first surface of the absorbent core and the second surface of the absorbent core, and the thermoplastic resin fibers are In addition, it may be difficult to entangle with other thermoplastic resin fibers and / or cellulosic water-absorbing fibers, and thus the restorability after folding of the absorbent body may be difficult to improve.
In addition, when a thermoplastic resin fiber becomes intertwined with other fibers, the thermoplastic fiber is fixed, and it becomes easy to function as an elastic body, so that the restorability after folding of the absorbent body is improved.
なお、上記平均繊維長は、本開示の吸収体が、エアレイド方式により、セルロース系吸水性繊維、例えば、パルプと混合される場合に特に好ましい。 Further, when the average fiber length exceeds 70 mm, the opening property of the thermoplastic resin fiber is remarkably lowered, and the absorbent body includes a thermoplastic resin fiber that has not been opened, thereby reducing the uniformity of the absorbent body. In some cases, it is difficult to improve the restorability of the absorber after bending.
In addition, the said average fiber length is especially preferable when the absorber of this indication is mixed with a cellulosic water absorption fiber, for example, a pulp by an airlaid system.
株式会社大栄科学精器製作所製 FS-60DS[測定面44mm(直径),測定圧3g/cm2]を準備し、標準状態(温度23±2℃,相対湿度50±5%)の下、吸収体の異なる5つの部位を加圧し、各部位における加圧10秒後の厚さを測定し、5つの測定値の平均値を吸収体の厚さとする。 In the present specification, the thickness (mm) of the absorber is measured as follows.
FS-60DS [measurement surface 44 mm (diameter), measurement pressure 3 g / cm 2 ] manufactured by Daiei Kagaku Seisakusho Co., Ltd. is prepared and absorbed under standard conditions (temperature 23 ± 2 ° C., relative humidity 50 ± 5%). Pressurize five different parts of the body, measure the thickness of each
上記密度は、吸収体の坪量と、厚さとから算出することができる。
なお、上記坪量は、JIS L 1913:2010の「6.2 単位面積当たりの質量(ISO法)」に従って測定する。 The absorbent of the present disclosure preferably has a density of 0.06 to 0.14 g / cm 3 , more preferably 0.07 to 0.12 g / cm 3 , and even more preferably 0.08 to 0.1 g / cm 3 . Have When an absorber has the ratio of the above-mentioned cellulosic water-absorbing fiber and thermoplastic resin fiber, and the said density, there exists a tendency for an absorber to be excellent in absorptivity.
The density can be calculated from the basis weight and thickness of the absorber.
In addition, the said basic weight is measured according to "6.2 Mass per unit area (ISO method)" of JIS L 1913: 2010.
なお、後述するエンボス部に関しては、この限りではない。 In the absorbent body of the present disclosure, it is preferable that the thermoplastic resin fibers are not fused with the cellulosic water-absorbing fibers and / or other thermoplastic resin fibers. Moreover, in the absorbent body of the present disclosure, it is preferable that the thermoplastic resin fiber is intertwined with the cellulosic water-absorbing fiber and / or other thermoplastic resin fiber. This is because the absorber can be deformed to some extent and the wearer feels soft.
Note that this is not the case with respect to the embossed portion described later.
さらに、エンボス部21が、熱可塑性樹脂繊維6,6',6''及び6'''を部分的に固定する観点からも、熱可塑性樹脂繊維6,6',6''及び6'''が弾性体としてより機能し、吸収体の折曲げ復元性がより向上する。 As shown in FIG. 5, a part of the
Further, from the viewpoint of the embossed
なお、「吸収体の面積」及び「エンボス部の面積」は、吸収体を平面視した際の面積を意味する。 When the absorbent body of the present disclosure has a plurality of embossed portions, the area ratio of the plurality of embossed portions to the area of the absorbent body is preferably 1 to 20%, more preferably 2 to 15%, and even more preferably. 3 to 10%. When the area ratio is less than 1%, the action of the embossed portion tends not to appear, and when the area ratio exceeds 10%, the wearer tends to feel firmness to the absorbent body.
The “area of the absorber” and “area of the embossed portion” mean the area when the absorber is viewed in plan.
上記エンボス部の配置は、特に制限されず、例えば、千鳥状、例えば、角千鳥状、60°千鳥状等の配置が挙げられる。 When the absorbent body of the present disclosure has a plurality of embossed portions, the shape of the embossed portions is not particularly limited, and examples of the shape of the embossed portions include a dotted embossed portion and a linear embossed portion. It is done. Examples of the dot-like embossed portion include circular, oval, rectangular, triangular, star-shaped, heart-shaped embossed portions.
The arrangement of the embossed portions is not particularly limited, and examples thereof include a zigzag pattern such as a square zigzag pattern and a 60 ° zigzag pattern.
なお、具体的なエンボス部の形成方法は、「製造方法」の箇所で説明する。 In the absorbent body of the present disclosure, the dot-like embossed portion as shown in FIG. 4A pushes the dot-like protrusions on the wearer-side surface of the absorbent body, that is, the first surface side of the absorbent core. It is preferably formed by applying. It is because an absorber is easy to follow a wearer's body line because an absorber has a point-like embossed part formed from a wearer side surface.
A specific method for forming the embossed portion will be described in the section “Manufacturing method”.
なお、具体的なエンボス部の形成方法は、「製造方法」の箇所で説明する。 In the absorbent body of the present disclosure, the linear embossed portion as shown in FIG. 4B presses the linear protrusion on the clothing side surface of the absorbent body, that is, the second surface side of the absorbent core. It is preferable that it is formed by this. It is because it becomes easy to restore | restore, when an absorber bends in a wearer's direction because an absorber has the linear embossed part formed from the surface by the side of clothing.
A specific method for forming the embossed portion will be described in the section “Manufacturing method”.
上記高吸収性ポリマーとしては、例えば、デンプン系、セルロース系、合成ポリマー系、例えば、アクリル酸系の高吸収性ポリマーが挙げられる。 The absorbent of the present disclosure contains the superabsorbent polymer in a range of preferably 5 to 80% by mass, more preferably 10 to 60% by mass, and even more preferably 20 to 40% by mass of the total mass of the absorbent core. Including.
Examples of the superabsorbent polymer include starch-based, cellulose-based, and synthetic polymer-based, for example, acrylic acid-based superabsorbent polymers.
吸収性物品用の吸収体であって、上記吸収体が、吸収コアを備え、上記吸収コアが、熱可塑性樹脂繊維と、セルロース系吸水性繊維と、高吸収性ポリマーとを含み、上記熱可塑性樹脂繊維が、6~70mmの平均繊維長を有し、そして上記吸収体が、85%以上の折曲げ後復元率を有することを特徴とする吸収体。
各構成については、上述の通りである。 The absorber according to another embodiment of the present disclosure has the following configuration.
An absorbent body for an absorbent article, wherein the absorbent body includes an absorbent core, and the absorbent core includes a thermoplastic resin fiber, a cellulosic water-absorbing fiber, and a superabsorbent polymer, and the thermoplastic resin. An absorbent body, wherein the resin fibers have an average fiber length of 6 to 70 mm, and the absorbent body has a post-bending restoration rate of 85% or more.
Each configuration is as described above.
本開示の吸収性物品は、液透過性層と、液不透過性層と、上記液透過性層及び液不透過性層の間に設けられた吸収体とを備え、吸収コアが、吸収コアの第1面を、液透過性層側に向け、そして吸収コアの第2面を、液不透過性層に向けて配置されている。
本開示の吸収性物品において、吸収体は、上述の通りである。
なお、本開示の吸収性物品において、吸収体に含有されるセルロース系吸水性繊維は、吸収体の吸収性及び液体保持性に関連する、また、吸収体に含有される熱可塑性樹脂繊維は、液透過性層及び/又は液不透過性との連結、特に、液不透過性層との連結に関連し、吸収性物品の折曲げ後回復性を付与し、そして吸収体、ひいては吸収性物品に柔らかさを付与する。 [Absorbent articles]
An absorbent article according to the present disclosure includes a liquid-permeable layer, a liquid-impermeable layer, and an absorbent body provided between the liquid-permeable layer and the liquid-impermeable layer. The first surface is directed toward the liquid-permeable layer side, and the second surface of the absorbent core is disposed toward the liquid-impermeable layer.
In the absorbent article of the present disclosure, the absorbent body is as described above.
In the absorbent article of the present disclosure, the cellulosic water-absorbing fibers contained in the absorber are related to the absorbency and liquid retention of the absorber, and the thermoplastic resin fibers contained in the absorber are: Connection with a liquid-permeable layer and / or liquid-impermeable, in particular, connection with a liquid-impermeable layer, providing recovery after folding of the absorbent article, and an absorbent body, and thus an absorbent article Gives softness to
また、本開示の吸収性物品において、吸収体が点状のエンボス部を有する実施形態では、当該点状のエンボス部は、吸収コアの第1面側から、線状の突起を押し当てることにより形成されたことが好ましい。吸収体が、着用者の体のラインに沿いやすいからである。 In the absorbent article of the present disclosure, in the embodiment in which the absorbent body has a linear embossed portion, the linear embossed portion is formed by pressing a linear protrusion from the second surface side of the absorbent core. It is preferable. It is because it becomes easy to restore | restore when an absorber bends in a wearer's direction.
Moreover, in the absorbent article of the present disclosure, in the embodiment in which the absorbent body has a point-like embossed portion, the point-like embossed portion presses a linear protrusion from the first surface side of the absorbent core. Preferably formed. It is because an absorber tends to follow a wearer's body line.
本開示の吸収体は、熱可塑性樹脂繊維と、セルロース系吸水性繊維とを含み、そして上記熱可塑性樹脂繊維の少なくとも一部が、吸収コアの第1面に露出する第1の部分と、吸収コアの第2面に露出する第2の部分とを有するものが製造できる方法であれば、特に制限されず、当技術分野で公知の方法を利用することができる。また、本開示の吸収性物品は、上述の吸収体を含む以外は、当技術分野で公知の方法により製造することができる。
以下、本開示の吸収性物品の製造例を説明する。 [Production method]
The absorbent body of the present disclosure includes a thermoplastic resin fiber and a cellulosic water-absorbing fiber, and at least a part of the thermoplastic resin fiber is exposed on the first surface of the absorbent core; Any method having a second part exposed on the second surface of the core can be used, and any method known in the art can be used. Moreover, the absorbent article of this indication can be manufactured by a well-known method in this technical field except including the above-mentioned absorber.
Hereinafter, production examples of the absorbent article of the present disclosure will be described.
なお、図7では、熱可塑性樹脂繊維と、セルロース系吸水性繊維とは、区別して表現されていない。 FIG. 7 is a diagram for explaining a method of manufacturing an absorbent body and an absorbent article according to one embodiment of the present disclosure. The method shown in FIG. 7 includes a first step (I) and a second step (II).
In FIG. 7, the thermoplastic resin fibers and the cellulosic water-absorbing fibers are not distinguished from each other.
機械方向MDへ回転するサクションドラム151の周面151aには、吸収体材料を詰める型として、周面151aからサクションドラムの中心に向かって延びる、複数の凹部153が、所定のピッチで形成されている。サクションドラム151が回転して凹部153が材料供給部152へ進入すると、サクション部156の吸引により、材料供給部152から供給された吸収体材料が、凹部153に堆積する。 [First step (I)]
A plurality of
吸収体原料及び凹部153に着目すると、吸収体原料は、凹部のサクションドラムの回転の下流側の凹部部分153aから、回転の上流側の凹部部分153bに向かって順に堆積する傾向があるため、熱可塑性樹脂繊維が、上述の特定の繊維配向性を有する傾向がある。 By doing in this way, there exists a tendency for a thermoplastic resin fiber to accumulate in the depth direction of the recessed
Paying attention to the absorber material and the
さらに、サクションドラムの回転速度を、吸収体原料の流れ速度よりも遅くする等により、熱可塑性樹脂繊維が上述の特定の繊維配向性を有しやすくなる。
次いで、凹部153に形成された吸収体226は、塗工機159から塗工された接着剤をその上に有するキャリアシート150上に移動する。 Further, when depositing the absorber material in the
Furthermore, the thermoplastic resin fiber is likely to have the above-mentioned specific fiber orientation by making the rotation speed of the suction drum slower than the flow rate of the absorbent material.
Next, the
次いで、ロール227から第1コアラップシート229を供給し、塗工機229から塗工された接着剤を第1コアラップシート229に塗工した後、吸収体226の上に積み重ね,積み重ね物230を形成する。 The
Next, the first
第2工程(II)では、エンボス工程において、積み重ね物230を、一対のエンボスロール301,302を用いてエンボスし、積み重ね物230にエンボス部を形成する。続くカット工程では、一対のロール303,304を用いて、積み重ね物230を所定の形状に切り抜き、吸収体305を製造する。それ以外の工程は、公知の方法により実施可能であることから説明を省略する。 [Second step (II)]
In the second step (II), in the embossing step, the
[製造例1]
図7に示される装置により、パルプ:225g/m2、熱可塑性樹脂繊維:25g/m2、及びポリアクリル酸ナトリウム系高吸収性ポリマー(SAP,Super Absorbent polymer):220g/m2の坪量で含み、長さ340mm×幅110mmのサイズを有する、厚さ未調整の吸収コアを得た。上記熱可塑性樹脂繊維は、芯がポリエチレンテレフタラートであり、鞘がポリエチレンである芯鞘繊維であり、平均繊維長は30mm、繊度は2.2dtexであった。
次いで、上記厚さ未調整の吸収コアを、一対のフラットロールに通し、その厚さを調整し、吸収コアNo.1を製造した。 EXAMPLES Hereinafter, although this invention is demonstrated further in detail based on an Example, the scope of the present invention is not limited to an Example.
[Production Example 1]
According to the apparatus shown in FIG. 7, the basis weight of pulp: 225 g / m 2 , thermoplastic resin fiber: 25 g / m 2 , and sodium polyacrylate-based superabsorbent polymer (SAP): 220 g / m 2 An unadjusted absorbent core having a size of 340 mm long × 110 mm wide was obtained. The thermoplastic resin fiber was a core-sheath fiber having a core of polyethylene terephthalate and a sheath of polyethylene, an average fiber length of 30 mm, and a fineness of 2.2 dtex.
Next, the absorbent core having an unadjusted thickness is passed through a pair of flat rolls, and the thickness is adjusted. 1 was produced.
熱可塑性樹脂繊維及びパルプの比率を表1に示されるとおりに変更した以外は製造例1の手順に従って、吸収コアNo.2~6を製造した。 [Production Examples 2 to 6]
According to the procedure of Production Example 1 except that the ratio of the thermoplastic resin fibers and pulp was changed as shown in Table 1, the absorbent core No. 2-6 were produced.
吸収コアNo.1~No.6の、折曲げ後復元率を評価した。結果を併せて表1に示す。
なお、実施例1~5の吸収コアNo.1~No.5の厚さ方向の引張強さは、100Pa以上であった。 [Examples 1 to 5 and Comparative Example 1]
Absorption core No. 1-No. 6, the post-bending restoration rate was evaluated. The results are also shown in Table 1.
In addition, the absorption core Nos. 1-No. The tensile strength in the thickness direction of 5 was 100 Pa or more.
2 トップシート
3 吸収体
4 バックシート
5 吸収コア
6 熱可塑性樹脂繊維
6a 第1の部分
6b 第2の部分
6c 連結部分
7 セルロース系吸水性繊維
8 高吸収性ポリマー
9 第1面
10 第2面
11 第1コアラップ
12 第2コアラップ
21 エンボス部
41 立体ギャザー
41a,43 伸縮部材
42 ファスナー
401 治具
402 サンプル
403 両面テープ
404 おもり
405 保持台 DESCRIPTION OF
Claims (15)
- 長手方向及び幅方向を有する、吸収性物品用の吸収体であって、
前記吸収体が、第1面と、その反対側の第2面とを有する吸収コアを備え、
前記吸収コアが、熱可塑性樹脂繊維と、セルロース系吸水性繊維と、高吸収性ポリマーとを含み、
前記熱可塑性樹脂繊維の少なくとも一部が、前記吸収コアの第1面に露出する第1の部分と、前記吸収コアの第2面に露出する第2の部分と、第1の部分及び第2の部分を連結する連結部分とを有し、そして
前記吸収体が、85%以上の折曲げ後復元率を有する、
ことを特徴とする、前記吸収体。 An absorbent body for an absorbent article having a longitudinal direction and a width direction,
The absorber comprises an absorbent core having a first surface and a second surface opposite to the first surface;
The absorbent core includes thermoplastic resin fibers, cellulosic water-absorbing fibers, and superabsorbent polymers;
At least a part of the thermoplastic resin fiber is exposed to the first surface of the absorbent core, the second portion exposed to the second surface of the absorbent core, the first portion and the second portion. And a connecting portion that connects the portions, and the absorber has a post-bending restoration rate of 85% or more,
The absorber as described above. - 前記吸収体が、前記吸収コアの第1面を覆う第1コアラップと、前記吸収コアの第1面及び第1コアラップの間の接着部とをさらに備え、前記熱可塑性樹脂繊維の第1の部分が、前記接着部を介して、第1コアラップに連結されており、そして/又は前記吸収体が、前記吸収コアの第2面を覆う第2コアラップと、前記吸収コアの第2面及び第2コアラップの間の接着部とをさらに備え、前記熱可塑性樹脂繊維の第2の部分が、前記接着部を介して、第2コアラップに連結されている、請求項1に記載の吸収体。 The absorbent body further includes a first core wrap that covers the first surface of the absorbent core, and an adhesive portion between the first surface of the absorbent core and the first core wrap, and the first portion of the thermoplastic resin fiber. Is connected to the first core wrap through the adhesive portion, and / or the absorbent core includes a second core wrap that covers the second surface of the absorbent core, and the second and second surfaces of the absorbent core. The absorbent body according to claim 1, further comprising an adhesive portion between the core wraps, wherein the second portion of the thermoplastic resin fiber is connected to the second core wrap through the adhesive portion.
- 前記熱可塑性樹脂繊維が、前記吸収コアの厚さの2倍以上の平均繊維長を有する、請求項1又は2に記載の吸収体。 The absorbent body according to claim 1 or 2, wherein the thermoplastic resin fiber has an average fiber length that is twice or more the thickness of the absorbent core.
- 前記熱可塑性樹脂繊維が、6~70mmの平均繊維長を有する、請求項1~3のいずれか一項に記載の吸収体。 The absorbent body according to any one of claims 1 to 3, wherein the thermoplastic resin fibers have an average fiber length of 6 to 70 mm.
- 前記吸収体が、少なくとも前記吸収コアをエンボスすることにより形成され且つ間隔をあけて配置された、複数のエンボス部を有する、請求項1~4のいずれか一項に記載の吸収体。 The absorbent body according to any one of claims 1 to 4, wherein the absorbent body has a plurality of embossed portions formed by embossing at least the absorbent core and arranged at intervals.
- 前記エンボス部が、前記長手方向に延びる線状のエンボス部を含む、請求項5に記載の吸収体。 The absorber according to claim 5, wherein the embossed portion includes a linear embossed portion extending in the longitudinal direction.
- 前記線状のエンボス部が、少なくとも前記吸収コアに、前記吸収コアの第2面側から、線状の突起を押し当てることにより形成された、請求項6に記載の吸収体。 The absorbent body according to claim 6, wherein the linear embossed portion is formed by pressing a linear protrusion against at least the absorbent core from the second surface side of the absorbent core.
- 前記エンボス部が、点状のエンボス部を含む、請求項5~7のいずれか一項に記載の吸収体。 The absorbent body according to any one of claims 5 to 7, wherein the embossed portion includes a dot-like embossed portion.
- 前記点状のエンボス部が、少なくとも前記吸収コアに、前記吸収コアの第1面側から、点状の突起を押し当てることにより形成された、請求項8に記載の吸収体。 The absorber according to claim 8, wherein the dot-like embossed part is formed by pressing a dot-like protrusion against at least the absorbent core from the first surface side of the absorbent core.
- 前記間隔が、前記熱可塑性樹脂繊維の平均繊維長の2.0倍以下である、請求項5~9のいずれか一項に記載の吸収体。 The absorbent body according to any one of claims 5 to 9, wherein the interval is 2.0 times or less of an average fiber length of the thermoplastic resin fibers.
- 前記熱可塑性樹脂繊維が、エンボス部を有しない非エンボス部において、前記セルロース系吸水性繊維及び/又は他の熱可塑性樹脂繊維と融着されていない、請求項5~10のいずれか一項に記載の吸収体。 The thermoplastic resin fiber according to any one of claims 5 to 10, wherein the thermoplastic resin fiber is not fused with the cellulosic water-absorbing fiber and / or other thermoplastic resin fiber in a non-embossed portion having no embossed portion. The absorber of description.
- 前記吸収コアが、前記熱可塑性樹脂繊維と、前記セルロース系吸水性繊維とを、それらの合計100質量部に基づいて、それぞれ、5~50質量部及び50~95質量部の比率で含む、請求項1~11のいずれか一項に記載の吸収体。 The absorbent core includes the thermoplastic resin fiber and the cellulosic water-absorbing fiber in a ratio of 5 to 50 parts by mass and 50 to 95 parts by mass, respectively, based on a total of 100 parts by mass thereof. Item 12. The absorbent according to any one of Items 1 to 11.
- 前記吸収コアの厚さ方向の引張強さが、100Pa以上である、請求項1~12のいずれか一項に記載の吸収体。 The absorbent body according to any one of claims 1 to 12, wherein a tensile strength in a thickness direction of the absorbent core is 100 Pa or more.
- 液透過性層と、液不透過性層と、前記液透過性層及び前記液不透過性層の間に設けられた、請求項1~13のいずれか一項に記載の吸収体とを備える吸収性物品であって、
前記吸収コアが、その第1面を、前記液透過性層側に向け、そしてその第2面を、前記液不透過性層に向けて配置されている、
ことを特徴とする、前記吸収性物品。 A liquid-permeable layer, a liquid-impermeable layer, and the absorber according to any one of claims 1 to 13 provided between the liquid-permeable layer and the liquid-impermeable layer. An absorbent article,
The absorbent core is disposed with its first surface facing the liquid-permeable layer side and its second surface facing the liquid-impermeable layer.
The said absorbent article characterized by the above-mentioned. - 吸収性物品用の吸収体であって、
前記吸収体が、吸収コアを備え、
前記吸収コアが、熱可塑性樹脂繊維と、セルロース系吸水性繊維と、高吸収性ポリマーとを含み、
前記熱可塑性樹脂繊維が、6~70mmの平均繊維長を有し、そして
前記吸収体が、85%以上の折曲げ後復元率を有する、
ことを特徴とする、前記吸収体。 An absorbent for an absorbent article,
The absorber comprises an absorbent core;
The absorbent core includes thermoplastic resin fibers, cellulosic water-absorbing fibers, and superabsorbent polymers;
The thermoplastic fiber has an average fiber length of 6 to 70 mm, and the absorber has a post-bending restoration rate of 85% or more,
The absorber as described above.
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JP6957106B2 (en) * | 2017-11-20 | 2021-11-02 | 花王株式会社 | Absorbent core |
JP2021083542A (en) * | 2019-11-26 | 2021-06-03 | ユニ・チャーム株式会社 | Absorbent article |
JP2021083543A (en) * | 2019-11-26 | 2021-06-03 | ユニ・チャーム株式会社 | Absorbent article |
CN111603315A (en) * | 2020-05-18 | 2020-09-01 | 上海护理佳实业有限公司 | Absorbent core, and manufacturing method and manufacturing device therefor |
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JPH09505218A (en) * | 1993-11-16 | 1997-05-27 | ザ、プロクター、エンド、ギャンブル、カンパニー | Absorbent article having mixed multilayer absorbent structure with good bondability |
JP2005152241A (en) * | 2003-11-25 | 2005-06-16 | Daio Paper Corp | Method for manufacturing absorber and absorber for disposable diaper obtained by the same |
JP2014100307A (en) * | 2012-11-20 | 2014-06-05 | Kao Corp | Absorbent article |
-
2014
- 2014-08-26 JP JP2014172061A patent/JP6173276B2/en active Active
-
2015
- 2015-08-11 AU AU2015307582A patent/AU2015307582B2/en not_active Ceased
- 2015-08-11 WO PCT/JP2015/072788 patent/WO2016031569A1/en active Application Filing
- 2015-08-11 MY MYPI2017700564A patent/MY184262A/en unknown
- 2015-08-11 CN CN201580046260.5A patent/CN106714757B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS588175A (en) * | 1981-07-02 | 1983-01-18 | 瑞光鉄工株式会社 | Production of water absorbing material |
JPS63318941A (en) * | 1987-06-23 | 1988-12-27 | Mitsui Petrochem Ind Ltd | Absorbent article |
JPH09505218A (en) * | 1993-11-16 | 1997-05-27 | ザ、プロクター、エンド、ギャンブル、カンパニー | Absorbent article having mixed multilayer absorbent structure with good bondability |
JP2005152241A (en) * | 2003-11-25 | 2005-06-16 | Daio Paper Corp | Method for manufacturing absorber and absorber for disposable diaper obtained by the same |
JP2014100307A (en) * | 2012-11-20 | 2014-06-05 | Kao Corp | Absorbent article |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11266542B2 (en) | 2017-11-06 | 2022-03-08 | The Procter & Gamble Company | Absorbent article with conforming features |
US11857397B2 (en) | 2017-11-06 | 2024-01-02 | The Procter And Gamble Company | Absorbent article with conforming features |
US11864982B2 (en) | 2017-11-06 | 2024-01-09 | The Procter And Gamble Company | Absorbent article with conforming features |
US11890171B2 (en) | 2017-11-06 | 2024-02-06 | The Procter And Gamble Company | Absorbent article with conforming features |
CN111148492A (en) * | 2017-11-28 | 2020-05-12 | 花王株式会社 | Absorbent body and absorbent article |
CN111148492B (en) * | 2017-11-28 | 2021-10-08 | 花王株式会社 | Absorbent body and absorbent article |
Also Published As
Publication number | Publication date |
---|---|
CN106714757B (en) | 2018-10-09 |
AU2015307582A1 (en) | 2017-04-13 |
CN106714757A (en) | 2017-05-24 |
JP2016043197A (en) | 2016-04-04 |
JP6173276B2 (en) | 2017-08-02 |
MY184262A (en) | 2021-03-30 |
AU2015307582B2 (en) | 2019-03-21 |
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