Classifications

• • 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
  • A61F13/551—Packaging before or after use
  • A61F13/5513—Packaging before or after use packaging of feminine sanitary napkins
  • A61F13/55135—Packaging before or after use packaging of feminine sanitary napkins before use
  • A61F13/5514—Packaging before or after use packaging of feminine sanitary napkins before use each item packaged single
• • 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
• • 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
  • A61F13/476—Sanitary towels, incontinence pads or napkins characterised by encircling the crotch region of the undergarment

Definitions

• the present invention relates to an absorbent product .
• an absorbent product provided with an absorbent body including a liquid permeable skin contact side sheet, a liquid impermeable non-skin contact side sheet, and an absorbent core which is arranged between these skin contact side sheet and non-skin contact side sheet and with a cover sheet which covers a surface of the skin contact side sheet, in the absorbent product, a peripheral edge region of the cover sheet being bonded with the absorbent body, an inner or center region of the cover sheet having partition lines
• a plurality of wings for affixing the absorbent body to clothing comprised of weakened lines by which a plurality of wings for affixing the absorbent body to clothing are defined, these wings comprised of a front wing and back wing to be folded at a front folded region and back folded region which respectively follow along a front end edge and back end edge of the absorbent body and to be extended in the front and back directions, at the time of use, the front wing and back wing being folded and extended at the front folded region and back folded region and affixed to the clothing (see PLT 1) .
• the cover sheet due to the cover sheet, the skin contact side sheet is protected while the absorbent body is reliably affixed to the clothing.
• PLT 1 Japanese Utility Model Publication (U) No. 9-
• Menstrual blood or urine or other such liquid to be absorbed first reaches the skin contact side sheet, then passes through the skin contact side sheet, reaches the absorbent core, and is absorbed at the absorbent core.
• not all of the liquid to be absorbed is necessarily instantaneously absorbed by the absorbent core. Therefore, part of the liquid to be absorbed sometimes remains at the skin contact side sheet. This liquid to be absorbed may move along the skin contact side sheet surface, cross the front folded region or back folded region, and leak out to outside of the absorbent product, that is, liquid leakage may occur.
• an absorbent product provided with an absorbent body including a liquid permeable skin contact side sheet, a liquid impermeable non-skin contact side sheet, and an absorbent core which is arranged between these skin contact side sheet and non-skin contact side sheet and with a cover sheet which covers a surface of the skin contact side sheet, in the absorbent product, a
• an inner or center region of the cover sheet having partition lines comprised of weakened lines or cut lines by which a plurality of wings for affixing the absorbent body to clothing are defined, these wings including a front wing and back wing to be folded at a front folded region and back folded region which respectively follow along a front end edge and back end edge of the absorbent body and to be extended in the front and back directions, at the time of use, the front wing and back wing being folded and extended at the front folded region and back folded region and affixed to the clothing, the partition lines being formed so that the front folded region is positioned at the outside in the longitudinal direction from the absorbent core front end edge and/or the back folded region is positioned at the outside in the longitudinal direction from the absorbent core back end edge.
• FIG. 1 is a front view of a sanitary napkin.
• FIG. 2 is a schematic lateral cross-sectional view of a sanitary napkin seen along the line II-II of FIG. 1.
• FIG. 3 is a front view of the sanitary napkin of
• FIG. 1 with the wings opened up.
• FIG. 4 is a schematic partial longitudinal cross- sectional view of the sanitary napkin of FIG. 1 showing the area around the front folded region at the time of use .
• FIG. 5 is a schematic partial longitudinal cross- sectional view of the sanitary napkin of FIG. 1 showing the area around the back folded region at the time of use .
• FIG. 6 is a front view of a sanitary napkin showing another embodiment according to the present invention.
• FIG. 7 is a schematic partial longitudinal cross- sectional view of the sanitary napkin of FIG. 6 showing the area around the back folded region at the time of use .
• FIG. 8 is a front view of a sanitary napkin showing still another embodiment according to the present
• FIG. 9 is a front view of a sanitary napkin showing a modification of wings.
• FIG. 1 and FIG. 2 show a case of application of the present invention to a sanitary napkin.
• the present invention can also be applied to another
• absorbent product such as a panty liner or incontinence core .
• a sanitary napkin 1 of an embodiment according to the present invention (hereinafter simply referred to as a "napkin") is provided with an absorbent body 2.
• This absorbent body 2 is provided with a liquid permeable skin contact side sheet 3, a liquid impermeable non-skin contact side sheet
• the skin contact side sheet 3 and non-skin contact side sheet 4 are substantially the same size and are bonded with each other at the peripheral edge part 2P by a hot melt adhesive, heat sealing, etc. Further, at the outer surface of the non-skin contact side sheet 4 which faces clothing such as an undergarment at the time of use, adhesive strips 6 are applied for fastening the absorbent body 2 to the clothing. The adhesive strips 6 are covered by a peeloff sheet 7.
• 2F, 2B, 2L, and 2R indicate a front end edge, back end edge, left side edge, and right side edge of the napkin 1 or absorbent body 2
• 5F, 5B, 5L, and 5R indicate a front end edge, back end edge, left side edge, and right side edge of the absorbent core 5. The front, back, left, and right in these cases
• the surface of the skin contact side sheet 3 which contacts the skin of the wearer at the time of use is covered by a liquid impermeable cover sheet 8.
• This cover sheet 8 is substantially the same size as the absorbent body 2 and, therefore, covers substantially the entire surface of the skin contact side sheet 3.
• the cover sheet 8 is bonded at the ring-shaped peripheral edge region 8P by a hot melt adhesive, heat sealing, etc. to the skin contact side sheet 3 or the absorbent body 2.
• the region other than the peripheral edge region 8P that is, the inner or center region 8C, is not bonded to the skin contact side sheet 3.
• the cover sheet 8 may be a liquid
• partition lines 9 are formed in advance.
• partition lines 9 are used to define or form a plurality of wings at the inner or center region 8C for fastening the absorbent body 2 to the clothing.
• the partition lines 9 are comprised of cut lines completely cutting the cover sheet 8. Note that, the partition lines 9 can also be comprised of weakened lines such as perforated lines.
• the partition lines 9 are comprised of a U-shaped curved part 9F to be extended toward the front end edge 2F, a U- shaped curved part 9B to be extended toward the back end edge 2B, and a straight part 9S connecting the vertexes of these curved parts 9F and 9B at the substantial center of the cover sheet 8.
• four wings that is, a semi oval front wing 10F and back wing 10B and a plateau-shaped left wing 10L and right wing 10R are defined.
• the left and right wings 10L and 10R are positioned symmetrically.
• the partition lines 9 do not reach the peripheral edge region 8P, therefore a non-cut region 8N is formed between the ends of the partition lines 9 and the peripheral edge region 8P.
• partition lines 9 are formed so that the ends 9FE of the front side partition line part 9F are positioned at the outside in the longitudinal direction from the front end edge 5F of the absorbent core 5, while the ends 9BE of the back side partition line part 9B are positioned at the inside in the longitudinal direction from the back end edge 5B of the absorbent core 5.
• the partition lines 9 are formed so that the front wing 10F and the back wing 10B differ in longitudinal direction lengths. That is, the partition lines 9 are formed so that the longitudinal direction length LF of the front wing 10F becomes longer than the longitudinal direction length LB of the back wing 10B.
• the longitudinal direction length L of the napkin 1 is for example at least 230 mm, preferably at least 250 mm to not more than 350 mm.
• the skin contact side sheet 3 is for example comprised of a nonwoven fabric having holes or not having holes or a porous plastic sheet.
• the non-skin contact side sheet 4 is for example comprised of a hydrophobic nonwoven fabric, a water impermeable plastic film, a laminate sheet of a nonwoven fabric and a water impermeable plastic film, a highly water resistant melt blown nonwoven fabric, or an SMS nonwoven fabric sandwiched between high strength spun bond nonwoven fabrics.
• the absorbent core 5 is for example comprised of a fluffy pulp or air laid nonwoven fabric and highly absorbent polymer.
• the fluffy pulp is for example comprised of chemical pulp, cellulose fiber, rayon, acetate, or other manmade cellulose fiber
• the air laid nonwoven fabric is for example comprised of pulp and synthetic fiber hot bonded or bonded by a binder to form a nonwoven fabric.
• the highly absorbent polymer is for example comprised of a starch-based, acrylic acid-based, or amino acid-based polymer of a particle or fiber shape.
• the adhesive strips 6 and 11 are for example comprised of a styrene-isoprene-styrene block copolymer (SIS) , styrene-butadiene-styrene block copolymer (SBS) , styrene-ethylene-butylene-ethylene copolymer (SEBS), or other hot melt adhesive.
• SIS styrene-isoprene-styrene block copolymer
• SBS styrene-butadiene-styrene block copolymer
• SEBS styrene-ethylene-butylene-ethylene copolymer
• the cover sheet 8 is for example comprised of a hydrophobic nonwoven fabric, a water impermeable plastic film, a laminate sheet of a nonwoven fabric and a water impermeable plastic film, a highly water resistant melt blown nonwoven fabric, or an SMS nonwoven fabric
• the cover sheet 8 preferably has a basis weight of 15 g/m 2 to 60 g/m 2 .
• the plastic film preferably has a drapeability, by the cantilever method, of 20 mm to 100 mm, more preferably 30 mm to 70 mm. This is because if the drapeability is smaller than 20 mm, the cover sheet 8 will easily become twisted. On the other hand, if the drapeability is larger than 100 mm, the cover sheet 8 will become hard, so the feeling of use of the napkin 1 is liable to be degraded, the ability to mold against the clothing falls, and the liquid to be absorbed is liable to leak.
• the above-mentioned cantilever method is performed as follows based on JIS-L1018. That is, five measurement pieces of a length of 150 mm and a width of
• a measurement sample 25 mm are stacked to obtain a measurement sample.
• a cantilever made by Daiei Kagaku Seiki is used, the measurement sample is placed under a holding plate of the cantilever, the sample is slid in the slanted direction, and the distance of movement is automatically measured at a speed of 5 mm/sec. The measurement is performed for both the case where the front surface of the measurement sample is placed facing down and the case where the back surface of the measurement sample is placed facing down and the average of these was made the measurement result.
• the napkin 1 is fastened to the clothing as follows. That is, first, the peeloff sheet 7 at the non- skin contact side sheet 4 side is taken off and the napkin 1 or absorbent body 2 is fastened to the clothing through the adhesive strips 6. At this time, the skin contact side sheet 3 is covered by the cover sheet 8, so the skin contact side sheet 3 is prevented from becoming dirty.
• these wings 10F, 10B, 10L, and 10R are opened up. That is, the front wing 10F is folded at the front folded region 14F along the front end edge 2F and extended in the front direction, while the back wing 10B is folded at the back folded region 14B along the back end edge 2B and extended in the back direction. Further, the left wing 10L is folded at the left folded region 14L along the left side edge 2L and extended in the left direction, while the right wing 10R is folded at the right folded region 14R along the right side edge 2R and extended in the right direction. As a result, the skin contact side sheet 3 is exposed.
• the wings 10F, 10B, 10L, and 10R are fastened through the adhesive strips 11 to the clothing. That is, as shown in FIG. 4, the front wing 10F is fastened to the inside surface of the clothing C at the front of the absorbent body 2, while, as shown in FIG. 5, the back wing 10B is fastened to the inside surface of the
• the left wing 10L and right wing 10R are fastened to the outside surface of the clothing C at the bottom of the absorbent body 2.
• absorbent body 2 That is, it is possible to reliably fasten the absorbent body 2 to the clothing, therefore it is possible to suppress leakage of the liquid to be absorbed. Further, it is possible to eliminate the concern of the wearer over leakage.
• the front folded region 14F is positioned on the line connecting the two ends 9FE of the partition line part
• the front folded region 14F is positioned at the outside in the longitudinal direction from the front end edge 5F of the absorbent core 5.
• a receiving groove 15F is formed between the front end edge 2F of the absorbent body 2 and the front end edge 5F of the absorbent core 5.
• liquid to be absorbed moves along the surface of the skin contact side sheet 3. If the liquid to be absorbed crosses the front folded region 14F, so-called liquid leakage ends up occurring.
• the liquid to be absorbed heading toward the front folded region 14F is received in the receiving groove 15F, then is absorbed at the absorbent core 5. Therefore, the liquid to be absorbed can be kept from crossing the front folded region 14F and liquid leakage can be kept from occurring around the front folded region 14F.
• the left folded region 14L and right folded region 14R are positioned on the lines connecting the adjoining ends 9FE and 9BE and, as shown in FIG. 3, are positioned at the outside in the lateral direction from the left end edge 5L and right end edge 5R of the absorbent core 5.
• receiving grooves 15L and 15R are formed with the right end edge 2R of the absorbent body 2 and the right end edge 5R of the absorbent core 5. Therefore, occurrence of liquid leakage is suppressed around the left folded region 14L and around the right folded region 14R as well.
• the back folded region 14B is positioned on the line connecting the two ends 9BE of the partition line part 9B, therefore, as shown in FIG. 3 and FIG. 5, is positioned at the inside in the longitudinal direction from the back end edge 5B of the absorbent core
• the back folded region 14B is positioned on the absorbent core 5. Further, the back wing 10B and the remaining cover sheet 8 overlap to form an overlap region 16B. This overlap region 16B overlaps the
• the back folded region 14B is positioned on the skin contact side sheet 3, so flow of the liquid to be absorbed on the front surface of the skin contact side sheet 3 is obstructed by the back folded region 14B.
• This liquid to be absorbed is next guided by the back folded region 14B to the directly below absorbent core 5 where it is absorbed.
• liquid leakage is also suppressed around the back folded region 14B.
• a longitudinal direction length LF of the front wing 10F is shorter than a longitudinal direction length LB of the back wing 10B.
• front wing 10F and back wing 10B differ in shape.
• the peripheral edge region 8P preferably has a width of 2 mm to 10 mm, more preferably 3 mm to 5 mm. This is because if the peripheral edge region 8P has a width narrower than 2 mm, the bonding strength between the cover sheet 8 and the absorbent body 2 will fall. Further, if the peripheral edge region 8P has a width broader than 10 mm, the surface of the skin contact side sheet 3 which is exposed when the wings 10F, 10B, 10L, and 10R are extended becomes narrower. That is, if the skin contact side sheet is broadly exposed, even if the positions of fastening the napkin 1 or absorbent body 2 to the clothing C are off somewhat from the suitable positions, leakage of the liquid to be absorbed can be suppressed.
• the distance from the ends 9FE of the front side partition line part 9F and the front end edge 2F of the napkin 1 is preferably 2 mm to 10 mm, more preferably 3 mm to 5 mm.
• the distance from the ends 9BE of the back side partition line part 9B to the back end edge 2B of the napkin 1 is preferably 10 mm to 20 mm, more preferably 13 mm to 15 mm. This is because even if the material meanders at the time of production of the napkin 1, the absorbent core 5 will not be positioned at the peripheral edge part 2P.
• FIG. 6 shows another embodiment according to the present invention.
• a pair of through paths 17B is formed adjoining the ends 9BE of the back side partition line part 9B and passing through the cover sheet 8. More accurately, the through paths 17B are formed at the back and longer wing 10B and at the part of the cover sheet 8 which overlaps the back wing 10B when the back wing 10B is extended.
• FIG. 8 shows another embodiment according to the present invention. Note that, in FIG. 8, the peeloff sheet piece 12 is omitted.
• extended parts 19B which extend from the ends 9BE of the back side partition line part 9B in the longitudinal direction are formed at the cover sheet 8. These extended parts 19B are for example comprised of weakened lines such as perforated lines .
• the extended parts 19B act as partition lines 9 when torn and as a result the back wing 10B becomes longer in longitudinal direction length. That is, if the extended parts 19B are not torn, the back wing 10B has a
• the back wing 10B has a longitudinal direction length which is lengthened to LBL.
• the extended parts 19B may also be partially torn. Therefore, the wearer can adjust the lengths of the extended parts 19B torn along so as to adjust the back wing 10B in longitudinal direction length between LB and LBL.
• the back wing 10B is changed in longitudinal direction length, the position of the back folded region 14B is also changed.
• the back wing 10B is lengthened in the longitudinal direction length to LBL, the back folded region 14B is positioned at the outside in the
• the partition lines 9 are formed so that four wings are defined.
• the number of the wings may be made two or three, or more than four.
• FIG. 9 shows the case where two wings, that is, only the front wing 10F and the back wing 10B, are defined.
• the front wing 10F and the back wing 10B are defined by partition line parts 9F and 9B having a common part 9C and form rectangular shapes. Note that, in FIG. 9, the peeloff sheet 12 is omitted.
• the front folded region 14F is positioned at the outside in the
• front folded region 14F may also be
• the front folded region 14F may be positioned at the inside in the longitudinal direction from the front end edge 5F of the absorbent core 5, while the back folded region 14B may be positioned at the outside in the longitudinal direction from the back end edge 5B of the absorbent core 5.
• a through path may be formed in the cover sheet around the front folded region 14F.
• the front wing 10F and the back wing 10B differ from each other in lengths. However, the front wing 10F and the back wing 10B may also be equal to each other.

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• 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)
• Absorbent Articles And Supports Therefor (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=44712394

Family Applications (1)

Country Status (2)

Citations (5)

• 2010
  • 2010-03-31 JP JP2010084142A patent/JP5398622B2/ja not_active Expired - Fee Related
• 2011
  • 2011-03-31 WO PCT/JP2011/058754 patent/WO2011122714A1/en active Application Filing

Patent Citations (5)

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