WO2014077241A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2014077241A1
WO2014077241A1 PCT/JP2013/080532 JP2013080532W WO2014077241A1 WO 2014077241 A1 WO2014077241 A1 WO 2014077241A1 JP 2013080532 W JP2013080532 W JP 2013080532W WO 2014077241 A1 WO2014077241 A1 WO 2014077241A1
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WO
WIPO (PCT)
Prior art keywords
low
sheet
pressure
absorbent article
annular
Prior art date
Application number
PCT/JP2013/080532
Other languages
English (en)
Japanese (ja)
Inventor
原田　裕之
裕介 小迫
Original Assignee
ユニ・チャーム株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ユニ・チャーム株式会社 filed Critical ユニ・チャーム株式会社
Publication of WO2014077241A1 publication Critical patent/WO2014077241A1/fr

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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
    • A61F13/531—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 having a homogeneous composition through the thickness of the pad
    • A61F13/532—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 having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • A61F13/533—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 having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad having discontinuous areas of compression
    • 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
    • A61F13/45—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 shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/475—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
    • A61F13/4751—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction
    • A61F13/4756—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means consisting of grooves, e.g. channels, depressions or embossments, resulting in a heterogeneous surface level

Definitions

  • the present invention relates to an absorbent article, and more particularly, to an absorbent article such as a light incontinence pad, panty liner, sanitary napkin, cage absorbent pad, urine absorbent pad, and disposable diaper.
  • an absorbent article such as a light incontinence pad, panty liner, sanitary napkin, cage absorbent pad, urine absorbent pad, and disposable diaper.
  • an absorptive article provided with a surface sheet located in a wearer's skin facing side, a back sheet located in a wearer's non-skin facing side, and an absorber interposed between a top sheet and a back sheet It is known.
  • Patent Document 1 a leak-proof groove formed on both left and right side portions on the skin contact surface side and extending in the longitudinal direction, and a linear crimp formed by pressure-bonding a top sheet and an absorbent body between the leak-proof grooves.
  • a sanitary napkin having a recess is disclosed.
  • An object of the present invention is to provide an absorbent article in which the generation of twisting and relatively large irregularities that reduce the absorption performance is suppressed without giving the wearer an unpleasant sensation.
  • the present invention has a longitudinal sheet, a lateral direction, and a thickness direction orthogonal to each other, and a surface sheet positioned on the wearer's skin facing surface side, and the wearer's non-skin facing surface
  • An absorptive article provided with a back sheet located in the side and an absorber interposed between the top sheet and the back sheet is assumed.
  • the present invention is a vertically long shape formed by squeezing the topsheet and the absorber in a direction from the topsheet to the backsheet at a portion where the topsheet and the absorber overlap.
  • the top sheet and the absorber in the direction from the top sheet to the back sheet.
  • the absorption at the bottom of the low-pressure squeeze comprises a low-pressure squeeze region having a plurality of low-pressure squeeze portions formed by squeezing and an absorption central region located between the low-pressure squeeze regions formed at both ends.
  • the dimension in the thickness direction of the absorbent article is larger than the dimension in the thickness direction of the absorbent article at the bottom of the annular compressed groove.
  • the absorbent article Means the dimension from the top surface of the top sheet to the bottom surface of the back sheet when the dimensions are measured with the top sheet side facing up.
  • the dimension in the thickness direction means “the dimension in the thickness direction of the absorbent article”.
  • the depths of the plurality of low-pressure recessed portions formed at both ends in the longitudinal direction in the region surrounded by the annular compressed groove are relatively small, so that the unevenness generated in the topsheet is reduced. It is difficult for the user to feel uncomfortable. Furthermore, since the depth of the low pressing portion is relatively small, an increase in the hardness of the low pressing portion where the low pressing portion is formed is suppressed. Therefore, the deformation of the absorbent article adapted to the user's movement is not hindered. Accordingly, an absorbent article in which twisting and relatively large unevenness are suppressed without giving the user an unpleasant sensation is provided.
  • FIG. 3 is a sectional view taken along line III-III in FIG. 1.
  • Explanatory drawing which shows the embossing / debossing process for manufacturing an absorbent article.
  • FIG. 5 is an enlarged sectional view taken along line VV in FIG. 4.
  • FIG. 7 is a sectional view taken along line VII-VII in FIG. 6. Photograph of sample for thickness direction dimension evaluation. Measurement example of thickness direction dimension.
  • a sanitary napkin 10 As shown in FIG. 1, a sanitary napkin 10 according to the present invention includes a top sheet 11 positioned on the skin facing surface side of the user, a back sheet 12 positioned on the non-skin facing surface side, the top sheet 11 and the back surface. And an absorbent body 20 interposed between the sheets 12.
  • the sanitary napkin 10 has a vertically long shape in the vertical direction Y, and is substantially symmetric with respect to the vertical center line and the horizontal center line.
  • the sanitary napkin 10 according to the present embodiment further includes a pair of wing portions 15 extending in a convex shape toward the laterally outer side at the longitudinal center portion of the side edge.
  • the top sheet 11 and the back sheet 12 have the same shape and the same size. Both the dimensions in the lateral direction X and the longitudinal direction Y are larger than those of the absorbent body 20 and have a peripheral edge 13 extending around the absorbent body 20. .
  • the top sheet 11 and the back sheet 12 are joined to each other at a peripheral edge portion 13 by a known means such as a hot melt adhesive (not shown) or heat welding. In FIG. 1, it has the joining part 18 shown with the oblique line.
  • the top sheet 11 has liquid permeability and is formed of a material containing a thermoplastic synthetic resin.
  • a fiber nonwoven fabric such as an air-through fiber nonwoven fabric, a point bond nonwoven fabric, or a spun bond nonwoven fabric can be suitably used.
  • the thermoplastic synthetic resin include, but are not limited to, olefin polymers such as ethylene and propylene, or polyethylene terephthalate.
  • the top sheet 11 preferably has a mass of about 10 to 50 g / m 2 and a thickness of about 0.5 to 2.0 mm.
  • the back sheet 12 is formed of a material containing a thermoplastic resin that is hardly liquid-permeable or liquid-impervious, and for example, a plastic film or a laminate of a plastic film and a fiber nonwoven fabric can be suitably used.
  • the fiber nonwoven fabric include, but are not limited to, a spunbond / meltblown / spunbond (SMS) fiber nonwoven fabric, an air-through fiber nonwoven fabric, a point bond fiber nonwoven fabric, and a spunbond fiber nonwoven fabric.
  • SMS spunbond / meltblown / spunbond
  • the above-mentioned synthetic resin can be used for the thermoplastic synthetic resin.
  • the back sheet 12 preferably has a mass of about 10 to 50 g / m 2 and a thickness of about 0.1 to 1.0 mm.
  • the top sheet 11 and the back sheet 12 it is preferable to use a material containing the same kind of resin from the viewpoint of bondability.
  • the wing part 15 of the present embodiment is formed in series with the top sheet 11 and the back sheet 12.
  • the wing portion 15 can be provided separately from the top sheet 11 and the back sheet 12.
  • the wing part 15 is formed from the same or different kind of sheet material as the top sheet 11 or the back sheet 12, and known means such as hot melt adhesive or heat welding are formed on both side edges of the absorbent body 20 in the longitudinal direction. Can be joined.
  • the absorber 20 is substantially rectangular and is interposed between the first sheet 21 located on the top sheet 11 side, the second sheet 22 located on the back sheet 12 side, and the first sheet 21 and the second sheet 22.
  • a body fluid-absorbing core material 23 is provided and is formed to have a substantially uniform thickness.
  • the first sheet 21 and the second sheet 22 have substantially the same shape and size, and their peripheral portions are joined to each other by a known means such as hot melt adhesive or heat welding.
  • seat 21 can be formed using the liquid-permeable fiber nonwoven fabric, tissue paper, and airlaid sheet
  • fiber nonwoven fabrics such as air through, a spun bond, and SMS, can be used.
  • seat 21 of this embodiment is formed from an air through fiber nonwoven fabric.
  • the air-through fiber nonwoven fabric is preferable because it can be relatively easily manufactured in order to reduce liquid return to the skin.
  • the mass of the first sheet 21 is preferably about 10 to 60 g / m 2 , for example.
  • the first sheet is preferably used from the viewpoint of retaining the shape of the core material 23 and preventing liquid return, but is not essential to the present invention. When the first sheet is not used, the core material 23 is directly covered with the top sheet 21.
  • the second sheet 22 either a liquid-permeable sheet or a liquid-impermeable sheet may be used, and as the sheet, any one of a fiber nonwoven fabric, a tissue paper, and an airlaid sheet can be adopted.
  • a fiber nonwoven fabric any of fiber nonwoven fabrics such as air-through, spunbond, and SMS may be used.
  • seat 22 of this embodiment is formed from a SMS fiber nonwoven fabric.
  • the mass of the second sheet 22 is preferably about 10 to 60 g / m 2 , for example.
  • the core material 23 can be formed of at least one of known absorbent polymer particles, absorbent fibers, or hygroscopic fibers.
  • absorbent polymers include, but are not limited to, starch-based, acrylic acid-based, and amino acid-based polymers.
  • absorbent fibers include natural pulp fibers such as wood fluff pulp, and examples of hygroscopic fibers include, but are not limited to, recycled fibers such as rayon staples, and mixtures thereof.
  • the top sheet 11 has a vertically long annular squeezed groove 31 formed by semicircular lines at both ends in the longitudinal direction Y and corrugated lines at both sides in the middle in the portion where the top sheet 11 and the absorbent body 20 overlap, Absorption center located between the low-pressure squeezed region 14 and the low-pressure squeezed region 14 having a plurality of low-pressure squeezed recesses 32 arranged intermittently at both ends in the longitudinal direction Y in the region 16 surrounded by the groove 31.
  • Area 17 The annular pressing groove 31 and the low-pressure pressing recess 32 are formed by pressing the top sheet 11 and the absorbent body 20 in the direction from the top sheet 11 to the back sheet 12.
  • the annular pressing groove 31 and the low pressing recess 32 can be formed by embossing / debossing.
  • illustration of the pressing mark formed in the core material 23 is abbreviate
  • the low pressing recessed part 32 is illustrated by a small diameter circle, the shape of the low pressing recessed part 32 is not limited to a circle.
  • the region 16 surrounded by the annular compressed groove 31 is located inside the outer peripheral edge of the portion where the topsheet 11 and the absorbent body 20 overlap.
  • the annular squeezing groove 31 suppresses exudation of the body fluid excreted in the region 16 to the outside.
  • the absorption central region 17 located between the pair of low-pressure squeezed regions 14 formed at both ends is located at the substantially central portion of the sanitary napkin 10 and is used when worn.
  • the main absorption area is formed facing the vulva of the person.
  • the annular compressed groove 31 is a pair of curved constricted portions 36 that are constricted in a curved line toward the inner side in the lateral direction of the sanitary napkin 10 at both boundary portions of the pair of low pressure regions 14 and the absorption central region 17.
  • the low-pressure squeezed regions 14 located on both outer sides in the longitudinal direction Y of the curved constricted portion 36 are kept flat and are easily deformed in accordance with the movement of the user's body.
  • the low-pressure squeezed recess 32 and the annular squeeze groove 31 are both formed by squeezing a substantially V-shaped cross section until entering the core 23, and the thickness at the bottom 33 of the low-pressure squeezed recess 32.
  • the dimension in the direction Z is larger than the dimension in the thickness direction Z at the bottom 34 of the annular pressing groove 31.
  • the dimension in the thickness direction Z of the bottom 33 of the low pressing recess 32 is 50% or more of the dimension in the thickness direction Z around the low pressing recess 32, and preferably 60% or more.
  • the dimension in the thickness direction Z of the bottom 34 of the annular pressing groove 31 is less than 50% of the dimension in the thickness direction Z around the annular pressing groove 31, and there is no particular lower limit value.
  • the dimension in the thickness direction Z can be reduced as long as processing is possible.
  • the dimension in the thickness direction Z of the sanitary napkin 10 in which the low-pressure squeezed recess 32 and the annular squeeze groove 31 are formed is substantially uniform,
  • the dimension is about 2/3 of the dimension in the thickness direction Z around the low-pressure recessed portion 32, and the dimension in the thickness direction Z of the bottom 34 of the annular compressed groove 31 is the thickness around the annular compressed groove 31. It is preferably about 1/3 of the dimension in the length direction Z.
  • seat 21 and the surface sheet 11 are integrated by pressing.
  • the first sheet 21 and the top sheet 11 are also continuous without breaking at the bottom 33 of the low pressure recessed portion 32 and the bottom 34 of the annular compressed groove 31. If the topsheet 11 is peeled off from the first sheet 21 during use of the sanitary napkin 10, there is a risk that the product may be twisted or the absorption performance may be lowered. In this way, the first sheet 21 and the topsheet 11 Are integrated by squeezing, and it is suppressed that the surface sheet 11 peels from the 1st sheet
  • the integration of the first sheet 21 and the top sheet 11 can be performed by a known means such as heat welding during embossing / debossing.
  • the compression squeezing recess 32 of the present invention has a relatively small compression depth as described above, the unevenness generated in the topsheet 11 during embossing / debossing is also relatively small, resulting in an unpleasant sensation for the user. Giving can be suppressed. Moreover, as a result of suppressing the increase in the hardness of the low pressing area 14 in which the low pressing recessed part 32 is arrange
  • the low pressing recessed part 32 of this invention is squeezed and formed until it reaches the inside of the core material 23 of the absorber 20, the communication with the core material 23 is high, and a bodily fluid is easy to osmose
  • FIG. Furthermore, in the core material 23, the density of the pulverized pulp around the low-pressure squeezed recess 32 is higher than that in the periphery, and the absorbed liquid is easily retained. As a result, the absorbability of the sanitary napkin 10 is improved. Moreover, also in the annular pressing groove 31, the density of the pulverized pulp is higher than that of the periphery, and the absorbability is improved.
  • a plurality of low-pressure squeezed recesses 32 are arranged on a virtual grid line G that is inclined with respect to the vertical direction Y. More specifically, the plurality of low-pressure squeezing recesses 32 are formed between the curved constricted portion 36 and the annular squeeze groove 31 at both ends in the longitudinal direction Y in the region 16 surrounded by the annular squeeze groove 31, that is, in the low-pressure squeeze region 14.
  • the low pressure recessed part 32 is also formed in the part which becomes the outer side of the horizontal direction X with respect to the most constricted part of the curved constricted part 36 which is arrange
  • the high tension portion formed along the virtual lattice line G inclined with respect to the longitudinal direction Y suppresses the formation of wrinkles parallel to the longitudinal direction Y, and the first sheet 21 of the topsheet 11. Is prevented from peeling off.
  • the generation of such depressions along the virtual grid line G depends on various factors such as the physical properties of the first sheet 21 and the top sheet 11, the distance between the low-pressure depressions 32, the depth of the low-pressure depressions 32, and the like. However, the above-described effects can be obtained as long as tension is applied to the first sheet 21 and the top sheet 11 between the adjacent pressed depressions 32 on the virtual lattice line G regardless of the presence or absence of such depressions. .
  • MD indicates a machine direction
  • CD indicates a cross direction orthogonal to the machine direction MD
  • VD is an upper and lower direction orthogonal to the machine direction MD and the cross direction CD, respectively.
  • MD indicates a machine direction
  • CD indicates a cross direction orthogonal to the machine direction MD
  • VD is an upper and lower direction orthogonal to the machine direction MD and the cross direction CD, respectively.
  • the machine direction MD corresponds to the vertical direction Y
  • the cross direction CD corresponds to the horizontal direction X
  • VD corresponds to the thickness direction Z.
  • the continuous web 50 including the top sheet 11, the back sheet 12, and the absorbent body 20 interposed between both sheets 11 and 12 is continuously run in one direction, that is, the machine direction MD. While being held between the pair of embossing / debossing rollers 40, the topsheet 11 is embossed / debossed. At this time, the continuous web 50 is caused to travel such that the portion where the topsheet 11 and the absorbent body 20 overlap faces upward.
  • the absorbent body 20 includes a body fluid-absorbing core member 23 interposed between the first sheet 21 and the second sheet 22 and is formed to have a substantially uniform thickness.
  • the pair of embossing / debossing rollers 40 includes a first roller 44 and a second roller 45, and the first roller 44 is positioned above the second roller 45.
  • the rotation shaft 44a of the first roller 44 and the rotation shaft 45a of the second roller 45 are parallel to each other.
  • the first roller 44 is a roller that contacts the top sheet 11 during embossing / debossing, and is disposed inside the annular first protrusion 46 and the annular first protrusion 46 for forming the annular compressed groove 31.
  • a plurality of second protrusions 47 for forming the low pressing recess 32 extends from the peripheral surface 44z toward the outside in the diameter direction. As shown in FIG.
  • the height of the first protrusion 46 from the peripheral surface 44 z is higher than that of the second protrusion 47.
  • the first roller 44 is configured such that its surface temperature can be controlled by temperature control means (not shown).
  • the second roller 45 is located on the back sheet 12 side. Further, the peripheral surface 45z of the second roller 45 has a constant distance from the axis of the rotation shaft 45a and is flat.
  • the clearance between the first roller 44 and the second roller 45 is set so that the portion where the top sheet 11 and the absorbent body 20 are overlapped by the first protrusion 46 and the second protrusion 47 at a desired depth. Adjust so that it can be squeezed. As an example, the clearance is adjusted within a range where the gap between the first protrusion 46 and the second roller 45 is greater than 0 mm and approximately 2 mm or less, and the compression depth is set to a desired value. Further, the continuous web 50 is machined so that the portion where the topsheet 11 and the absorber 20 overlap and the position of the first protrusion 46 and the second protrusion 47 rotating in the circumferential direction of the first roller 44 are synchronized. Drive continuously in direction MD.
  • the continuous web 50 is sandwiched between the first and second rollers 44 and 45 with a certain clearance, and the pattern of the first protrusion 46 and the second protrusion 47 formed on the first roller 44 is the continuous web.
  • the annular pressing groove 31 and the plurality of low-pressure pressing recesses 32 can be formed in the portion where the topsheet 11 and the absorbent body 20 overlap.
  • the temperature of the first roller 44 is set to a temperature at which the top sheet 11 and the first sheet 21 can be thermally welded, for example, about 80 to 100 ° C.
  • the top sheet 11 and the first sheet 21 can be integrated by heat welding.
  • the first protrusions 46 and the second protrusions 47 having different heights from the peripheral surface 44z of the first roller 44 are used while the clearance between the first roller 44 and the second roller 45 is constant.
  • the dimension in the thickness direction Z at the bottom 33 of the low-pressure depression 32 formed by the second protrusion 47 having a relatively low height from the peripheral surface 44z of the first roller 44 is the first protrusion. It becomes larger than the dimension of the thickness direction Z in the bottom part 34 of the annular pressing groove 31 formed of the part 46. FIG. In other words, the annular pressing groove 31 is squeezed deeper than the low pressure recess 32.
  • the annular pressing groove 31 is compressed at a higher compression rate than the low-pressure pressing recess 32.
  • the density of the core material 23 of the part in which the annular pressing groove 31 is formed becomes higher than the density of the core material 23 of the part in which the low pressure recessed part 32 is formed.
  • the density of the core material 23 is high, the diffusion rate of body fluid is improved.
  • the density of the core material 23 is relatively low, although it depends on the degree, the diffusion rate of the body fluid decreases, but the volume of the body fluid that can be absorbed and held increases.
  • the sanitary napkin 10 has an annular first protrusion 46 for forming the annular pressing groove 31 and a plurality of second protrusions 47 for forming the low pressure recess 32, and the first protrusion 46.
  • the sanitary napkin 10 produced using the first roller 44 whose height from the peripheral surface 44z of the second protrusion 47 is approximately twice the height of the second protrusion 47 was used.
  • the sanitary napkin 10 used in this evaluation has a substantially uniform thickness.
  • a portion including the low pressure recessed portion 32 and the annular compressed groove 31 was cut out to prepare an evaluation sample shown in FIG.
  • the surface having the low-pressure squeezing recess 32 and the annular squeezing groove 31 of the sample for evaluation is attached on a horizontal plane, and the non-contact type keyence shape measuring device KS-1100 is set using this plane as a reference plane. Using, the height of the surface of each part of the sanitary napkin 10 with respect to the reference surface was measured.
  • the height of the surface of the sanitary napkin 10 relative to the reference surface is referred to as the “apparent thickness” of the sanitary napkin 10, and by comparing the apparent thickness, the dimension in the thickness direction Z of the sanitary napkin 10 is determined. evaluated.
  • the value of the apparent thickness of the annular compressed groove 31 and the low-pressure recessed portion 32 was set to the minimum apparent thickness value in the portion where they were formed by pressing.
  • the annular pressing groove 31 formed in the top sheet 11 of the sample for evaluation has a bottom pressing portion 31a on the bottom surface. That is, the bottom surface of the annular pressing groove 31 has irregularities, and the dimension in the thickness direction Z is the smallest in the bottom pressing portion 31a. Moreover, the low pressing recessed part 32 formed in the surface sheet 11 of the sample for evaluation is arrange
  • FIG. 9 shows the result of measuring the apparent thickness in the frame line shown in FIG. 8 using the Keyence shape measuring instrument KS-1100.
  • FIG. 9A is a diagram showing the distribution of the apparent thickness when the evaluation sample is viewed from above by the change in color tone
  • FIG. 9B is an apparent view of the section IXb-IXb in FIG. 9A. It is a measurement result of thickness.
  • the apparent thickness of the low pressure recessed portion 32 of the sanitary napkin 10 is about 1900 ⁇ m
  • the apparent thickness of the annular compressed groove 31 (bottom compressed portion 31a) is about 1000 ⁇ m.
  • the apparent thickness of the low pressure recessed portion 32 is larger than the apparent thickness of the bottom portion of the annular compressed groove 31. In other words, the pressing depth of the low-pressure pressing recess 32 is smaller than the pressing depth of the annular pressing groove 31.
  • the dimension in the thickness direction Z at the bottom of the low-pressure squeezing recess 32 and the dimension in the thickness direction at the bottom of the annular pressing groove 31 can be evaluated.
  • the apparent thickness of the sanitary napkin 10 in a portion not compressed by the first and second protrusions 46 and 47 in the embossing / debossing process is approximately 2500 to 3000 ⁇ m. Therefore, the apparent thickness of the low-pressure recessed portion 32 is 50% or more of the apparent thickness of the sanitary napkin 10, and the apparent thickness of the annular compressed groove 31 is less than 50% of the apparent thickness of the sanitary napkin 10. ing. In the example shown in FIG.
  • the apparent thickness of the sanitary napkin 10 around the low-pressure squeezed recess 32 and the annular compressed groove 31 is about 2500 to 2700 ⁇ m, whereas the sanitary napkin 10 The apparent thickness at the end is about 3000 ⁇ m.
  • the sheet members (the first sheet 21 and the top sheet 11) around the low-pressure squeezing recess 32 and the annular squeezing groove 31 are compressed in the low-pressure squeezing recess 32 and the annular squeezing groove 31 by pressing during embossing / debossing. It was because it was drawn.
  • Second Embodiment A second embodiment of the present invention will be described with reference to FIG. Since the basic configuration of the second embodiment is the same as that of the sanitary napkin 10 of the first embodiment, only differences will be described below.
  • illustration of the pressing mark formed in the core material 23 is abbreviate
  • the sanitary napkin 10 is an absorption center located between the low-pressure squeezed region 14 formed at both ends in the longitudinal direction Y in the region 16 surrounded by the annular compressed groove 31 and the low-pressure squeezed region 14.
  • a pair of curvilinear lateral pressing grooves 30 that are spaced apart from the annular pressing groove 31 and extend in the lateral direction are provided on the absorption central area 17 side of both boundaries with the area 17.
  • the horizontal pressing groove 30 is formed by pressing the top sheet 11 and the absorbent body 20 in the direction from the top sheet 11 to the back sheet 12 until reaching the inside of the core member 23, similarly to the annular pressing groove 31. . Further, as shown in FIG.
  • the dimension in the thickness direction Z at the bottom 33 of the low-pressure squeezing recess 32 is larger than the dimension in the thickness direction Z at the bottom 35 of the lateral pressing groove 30.
  • the dimension of the thickness direction Z in the bottom part 35 of the horizontal pressing groove 30 can be made substantially the same as the dimension of the thickness direction Z in the bottom part 34 of the annular pressing groove 31, it is not limited to this.
  • a force in the lateral direction X is applied from both legs of the user toward the inside of the sanitary napkin 10. Since the sanitary napkin 10 which concerns on 2nd Embodiment is equipped with the horizontal pressing groove
  • abuts a user's vulva part is surrounded by a pair of horizontal pressing groove 30 extended in the horizontal direction X, and the both sides of the annular pressing groove 31 extended in the vertical direction Y. Even when a force in the lateral direction X is applied, deformation of the absorption central region 17 is effectively suppressed. As a result, the state where the absorption central region 17 is in contact with the user's vulva is easily maintained. Moreover, since the density of a pulverized pulp becomes high compared with the periphery also in the horizontal pressing groove 30 similarly to the annular pressing groove 31, body fluid absorbency improves.
  • the low-pressure squeezing recess 32 disposed in the low-pressure squeezing region 14 is formed by integrating the first sheet 21 and the top sheet 11 by squeezing, so that friction due to the movement of the user is caused. Since the surface sheet 11 is prevented from peeling from the first sheet 21 and the unevenness generated in the surface sheet 11 is relatively small, it is difficult to cause an unpleasant sensation to the user. Furthermore, since the increase in the hardness of the low pressure area 14 is suppressed, deformation of the absorbent article adapted to the movement of the user is not hindered, and wrinkles parallel to the longitudinal direction Y are formed. As a result of suppressing the irregular deformation of the product, it is possible to improve the feeling of use and prevent leakage.
  • the horizontal squeezing groove 30 provided at the boundary between the low pressure squeezing region 14 and the absorption central region 17 causes the absorption central region 17 to It is possible to prevent the deformation from propagating.
  • the low-pressure squeezed recess 32 can be disposed between the pair of lateral squeezed grooves 30, that is, in the absorption central region 17.
  • the absorption center area 17 is a part that abuts against the user's vulva part.
  • the sanitary napkin 10 according to the present embodiment is embossed using a roller (not shown) in which a protrusion for forming the lateral pressing groove 30 is added to the first roller 44 shown in the first embodiment. / Can be manufactured by debossing.
  • the present invention has been described based on the embodiment, the present invention is not limited to this and can be implemented with various modifications.
  • the curved constricted portion 36 may not be provided in the annular compressed groove 31.
  • the low pressing recessed part 32 is arrange
  • the core member 23 can be covered with a single sheet, for example, tissue paper, or the first sheet 21. Can be omitted.
  • tissue paper for example, tissue paper
  • the thickness of the absorber 20 of the part corresponded to the absorption center area 17 can be enlarged, and it can also be made to contact
  • the present invention is not limited to the sanitary napkin 10 and may be applied to absorbent articles such as light incontinence pads, panty liners, vaginal absorption pads, urine absorption pads, and disposable diapers.
  • a top sheet that has a longitudinal direction, a lateral direction, and a thickness direction that are orthogonal to each other and that is positioned on the skin facing surface side of the wearer; a back sheet that is positioned on the non-skin facing surface side of the wearer; and the top sheet and An absorbent article comprising an absorbent body interposed between the back sheet, wherein the top sheet and the absorber are transferred from the top sheet to the back sheet in a portion where the top sheet and the absorbent body overlap.
  • the top sheet and the absorber are A low-pressure squeezed area having a plurality of low-pressure squeezed depressions formed by squeezing in a direction from the top sheet toward the back sheet, and an absorption central area located between the low-pressure squeezed areas formed at both ends.
  • the low pressure The absorbent article where the thickness dimension of the absorbent article, being greater than said thickness dimension of the absorbent article at the bottom of the annular compressed groove in the bottom of the recess.
  • the present invention disclosed in the above paragraph includes at least the following embodiments, and the embodiments are adopted separately or in combination.
  • the plurality of low-pressure squeezed recesses are arranged on virtual lattice lines configured by a plurality of lines that are inclined with respect to the longitudinal direction and intersect each other.
  • a continuous web including a top sheet, a back sheet, and an absorber interposed between the top sheet and the back sheet is continuously run in one direction, and sandwiched between a pair of embossing / debossing rollers.
  • a first protrusion for forming the annular pressing groove and a plurality of second protrusions for forming the low-pressure squeeze extending toward the outside are provided, and the first protrusion is more
  • the manufacturing method characterized by the height from a surrounding surface being higher than a 2nd projection part.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

L'invention fournit un article absorbant ne conférant pas à la personne le portant de sensation désagréable, et empêchant des torsions ou des creux et reliefs relativement importants. Cet article absorbant est équipé : d'une feuille de face endroit (11), d'une feuille de face envers (12) et d'un corps absorbant (20) intercalé entre ces deux feuilles. En outre, cet article absorbant est équipé : d'une rainure de compression circulaire (31) longitudinale formée par compression dans la direction de l'épaisseur de la feuille de face endroit et du corps absorbant, en une région de superposition du corps absorbant avec la feuille de face endroit ; de régions de compression basse (14) qui sont positionnées aux deux parties extrémité dans la direction longitudinale à l'intérieur d'une région (16) entourée par la rainure de compression circulaire, et qui possèdent des parties creuses de basse compression (32) formées par compression dans la direction de l'épaisseur de la feuille de face endroit et du corps absorbant ; et d'une région centrale d'absorption (17) positionnée entre les régions de compression basse. L'épaisseur d'une partie basse des régions de compression basse, est supérieure à celle d'une partie basse située dans la rainure de compression circulaire.
PCT/JP2013/080532 2012-11-13 2013-11-12 Article absorbant WO2014077241A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-249723 2012-11-13
JP2012249723A JP2014097132A (ja) 2012-11-13 2012-11-13 吸収性物品

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WO2014077241A1 true WO2014077241A1 (fr) 2014-05-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI571249B (zh) * 2014-10-03 2017-02-21 Oji Holdings Corp Absorbent items
US10583050B2 (en) * 2014-11-06 2020-03-10 The Procter & Gamble Company Patterned apertured webs and methods for making the same

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Publication number Priority date Publication date Assignee Title
JP6695668B2 (ja) * 2014-10-03 2020-05-20 王子ホールディングス株式会社 吸収性物品
JP6503877B2 (ja) * 2015-05-15 2019-04-24 王子ホールディングス株式会社 吸収性物品
JP2016112408A (ja) * 2014-12-10 2016-06-23 王子ホールディングス株式会社 吸収性物品
JP6557004B2 (ja) * 2014-12-10 2019-08-07 王子ホールディングス株式会社 吸収性物品
JP6439651B2 (ja) * 2015-10-21 2018-12-19 王子ホールディングス株式会社 吸収性物品
WO2016092843A1 (fr) * 2014-12-10 2016-06-16 王子ホールディングス株式会社 Article absorbant
JP6531378B2 (ja) * 2014-12-10 2019-06-19 王子ホールディングス株式会社 吸収性物品
EA201791263A1 (ru) * 2014-12-10 2017-10-31 Одзи Холдингз Корпорейшн Впитывающее изделие
TWI607745B (zh) * 2015-05-15 2017-12-11 Oji Holdings Corp Absorbent article, and its manufacturing apparatus and manufacturing method
JP6413921B2 (ja) * 2015-05-15 2018-10-31 王子ホールディングス株式会社 吸収性物品
JP6558281B2 (ja) * 2016-03-08 2019-08-14 王子ホールディングス株式会社 吸収性物品、その製造装置および製造方法
JP6447396B2 (ja) * 2015-07-09 2019-01-09 王子ホールディングス株式会社 吸収性物品
JP2019069379A (ja) * 2019-02-19 2019-05-09 王子ホールディングス株式会社 吸収性物品

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JPS5663430U (fr) * 1979-10-21 1981-05-28
WO2010030007A1 (fr) * 2008-09-12 2010-03-18 ユニ・チャーム株式会社 Article absorbant
WO2010074339A1 (fr) * 2008-12-25 2010-07-01 ユニ・チャーム株式会社 Article absorbant mince
JP2011200568A (ja) * 2010-03-26 2011-10-13 Unicharm Corp 吸収体の製造装置

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JP5711515B2 (ja) * 2010-12-14 2015-04-30 花王株式会社 吸収性物品
JP5904712B2 (ja) * 2011-03-14 2016-04-20 ユニ・チャーム株式会社 吸収性物品
JP5755920B2 (ja) * 2011-03-29 2015-07-29 ユニ・チャーム株式会社 吸収性物品の包装体

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JPS5663430U (fr) * 1979-10-21 1981-05-28
WO2010030007A1 (fr) * 2008-09-12 2010-03-18 ユニ・チャーム株式会社 Article absorbant
WO2010074339A1 (fr) * 2008-12-25 2010-07-01 ユニ・チャーム株式会社 Article absorbant mince
JP2011200568A (ja) * 2010-03-26 2011-10-13 Unicharm Corp 吸収体の製造装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI571249B (zh) * 2014-10-03 2017-02-21 Oji Holdings Corp Absorbent items
US10583050B2 (en) * 2014-11-06 2020-03-10 The Procter & Gamble Company Patterned apertured webs and methods for making the same

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