WO2012133294A1 - Couche jetable - Google Patents

Couche jetable Download PDF

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Publication number
WO2012133294A1
WO2012133294A1 PCT/JP2012/057736 JP2012057736W WO2012133294A1 WO 2012133294 A1 WO2012133294 A1 WO 2012133294A1 JP 2012057736 W JP2012057736 W JP 2012057736W WO 2012133294 A1 WO2012133294 A1 WO 2012133294A1
Authority
WO
WIPO (PCT)
Prior art keywords
stretchable
cell
sheet
disposable diaper
nonwoven fabric
Prior art date
Application number
PCT/JP2012/057736
Other languages
English (en)
Japanese (ja)
Inventor
勝彦 杉山
Original Assignee
王子ネピア株式会社
王子製紙株式会社
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
Priority claimed from JP2011077350A external-priority patent/JP5938848B2/ja
Priority claimed from JP2011133718A external-priority patent/JP5811615B2/ja
Application filed by 王子ネピア株式会社, 王子製紙株式会社 filed Critical 王子ネピア株式会社
Priority to RU2013148547/12A priority Critical patent/RU2582955C2/ru
Priority to MYPI2013003518A priority patent/MY177014A/en
Priority to KR1020137028799A priority patent/KR101851038B1/ko
Priority to CN201280021199.5A priority patent/CN103619299B/zh
Publication of WO2012133294A1 publication Critical patent/WO2012133294A1/fr

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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
    • A61F13/45—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
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
    • 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
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49011—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the waist region
    • 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
    • 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
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • 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
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
    • 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
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers 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
    • A61F13/51—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 outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin

Definitions

  • the present invention relates to a disposable diaper.
  • Disposable diapers are absorbent articles that are worn so as to enclose the waist of the wearer, and are equipped with an absorber for absorbing and holding excrement.
  • the disposable diaper As described above, it extends along the waist edge of the portion enveloping the waist or along the side edge of the portion enveloping the crotch (for example, along the periphery of the leg opening). Fixing the stretchable material in a state is performed. This stretchable material is fixed for the purpose of improving the feeling of wearing and fitting and preventing the excrement from leaking from the waist opening or the leg opening.
  • an outer layer sheet, an inner layer sheet and a plurality of elastic members form an outer packaging material of an absorbent article, and the outer layer sheet and the inner layer sheet are intermittently formed in the waist circumference direction and the orthogonal direction thereof.
  • Pants-type absorbent articles are proposed that are arranged in the waist circumference direction so that the elastic member does not pass through the joining portion while being joined to each other (see Patent Documents 1 to 5).
  • This pant-type absorbent article is configured such that the elastic member is not fixed to the outer layer sheet and the inner layer sheet. Therefore, when the elastic member contracts, the outer layer sheet and the inner layer sheet are bent so as to be separated from each other, and a plurality of ridges extending from the outer end portion of the waist portion to the inner end portion are formed on the entire circumference of the waist portion. (Unevenness) is formed.
  • pant-type absorbent articles described in Patent Documents 1 to 5 have a volume in the stacking direction of the outer layer sheet and the inner layer sheet by the protrusions of the heels to improve the flexibility, cushioning properties, etc. of the stretchable material arrangement portion. It is thought that he was planning.
  • the above structure is a special structure in which an elastic member is arranged so as not to pass through the intermittent joint portion between the outer layer sheet and the inner layer sheet.
  • the elastic member is not restricted by either the outer layer sheet or the inner layer sheet, and can be freely extended.
  • the elastic member may stretch locally exceeding the stretch rate of 300% at the time of use. That is, the elastic member may extend excessively beyond an ideal expansion rate. Therefore, there is a problem that the elastic member that is tightly stretched may come into contact with the skin through the inner layer sheet to cause pain and discomfort.
  • the present invention has been made in view of the problems of the prior art as described above. That is, it has excellent flexibility, cushioning properties, breathability, and dehumidifying properties of stretchable material placement portions such as the waist end portion of the waist-wrapped portion and the side edge portion of the crotch-wrapped portion (for example, the peripheral portion of the leg opening), Disclosed is a disposable diaper that can be easily manufactured and can effectively prevent leakage of excrement in an elastic material arrangement portion.
  • the present inventor 1) The stretchable portion is fixed to the nonwoven fabric sheet, and the nonwoven fabric sheet and the stretchable material are integrated. 2) a cell-forming sheet made of non-woven fabric is disposed on a part of the skin contact surface in the portion where the stretchable part is formed, and 3) the cell-forming sheet and the stretchable part. Forming a joint part that is intermittently joined in the contraction direction of the stretchable part, and partitioning cells extending in the intersecting direction intersecting the shrinkage direction of the stretchable part between the cell forming sheet and the stretchable part by the joint part.
  • the present invention was completed by conceiving that the above-mentioned problems can be solved by forming. Specifically, the following disposable diapers are provided by the present invention.
  • a stretchable portion made of a stretchable nonwoven fabric is formed on at least one of the portion, the back-wrapped portion, and the crotch-wrapped portion, and the stretchable nonwoven fabric has the stretchable material fixed to the nonwoven fabric sheet, The nonwoven fabric sheet and the stretchable material behave integrally, and the stretchable portion shrinks in at least one of a direction along the waist and a direction along a side edge of the crotch envelope portion.
  • a cell-forming sheet made of non-woven fabric is disposed on a part of the skin contact surface in the portion where the stretchable part is formed, and the cell-forming sheet and the stretchable part are contracted in the shrinking direction of the stretchable part.
  • a joint part that is intermittently joined toward is formed, The engagement portion, between the layers of the cells forming sheet and the stretchable portion, disposable diapers cells extending in a direction crossing with the shrinking direction of the stretchable portion is partitioned and formed.
  • a cell row in which a plurality of cells are arranged in parallel in the contraction direction is formed, and the cell row is formed by alternately arranging the outward cells and the inward cells.
  • the joint is a zigzag or wavy joint continuous in the contraction direction, and the outward cells and the inward cells are alternately partitioned by the joint.
  • a cell row in which a plurality of cells are arranged in parallel in the shrinking direction is formed, and the cell row is arranged in a plurality of stages in the intersecting direction to form cells in one cell row.
  • a portion extending in the intersecting direction of the joining portion to be arranged and a portion extending in the intersecting direction of the joining portion forming a cell in the cell row adjacent to the one cell row are not arranged on a straight line.
  • Stretchable parts made of the stretchable nonwoven fabric are formed at least on the left and right side edges of the crotch envelopment part, and the stretchable part is formed to shrink in a direction along the side edge of the crotch envelopment part.
  • a cell-forming sheet made of a water-repellent nonwoven fabric is disposed on a part of the skin contact surface of the crotch enveloping portion, and the cell forming sheet and the stretchable portion are arranged on a side edge of the crotch enveloping portion.
  • a joint part that is intermittently joined in a direction along the direction is formed, and the joint part causes a cell extending in an intersecting direction intersecting a side edge of the crotch envelope part between the cell forming sheet and the stretchable part.
  • An elastic part made of the elastic nonwoven fabric is formed at least on the end of the crotch enveloping part on the side of the rear enveloping part, and the elastic part is formed so as to contract in the waist circumference direction.
  • the cell-forming sheet made of a water-repellent nonwoven fabric is arranged on a part of the skin contact surface at the end portion on the back enveloping part side, and the cell-forming sheet and the stretchable part are directed toward the waist direction.
  • the joint that intermittently joins is formed, and the joint extends to form a cell extending in an intersecting direction intersecting the waist direction between the cell forming sheet and the stretchable part. Disposable diapers described in 1.
  • the stretchable portion made of the stretchable nonwoven fabric is formed at least on the end portion of the front envelopment portion on the crotch envelopment portion side, and the stretchable portion is formed to shrink in a direction along the circumference of the trunk.
  • the cell-forming sheet made of a water-repellent nonwoven fabric is disposed on a part of the skin contact surface at the end on the crotch enveloping part side, and the cell-forming sheet and the stretchable part are arranged in the waist direction.
  • the joint part which joins intermittently toward is formed, and the cell extended in the crossing direction which intersects the circumference direction of the trunk is defined by the joint part between the cell formation sheet and the expansion-contraction part.
  • At least one of the stretchable parts formed at the end on the enveloping part side is continuously arranged to form a leg stretchable part surrounding the leg of the wearer, and the cell forming sheet and the leg stretchable Are joined intermittently toward the contraction direction of the leg expansion / contraction part, and the contraction direction of the leg expansion / contraction part is formed between the cell forming sheet and the leg expansion / contraction part by the connection part.
  • the stretchable material is disposed between the layers of the plurality of nonwoven fabric sheets, the stretchable material is fixed to the plurality of nonwoven fabric sheets, and the plurality of nonwoven fabric sheets and the stretchable material are integrated.
  • the disposable diaper according to any one of [8] to [11], wherein the disposable diaper behaves as follows:
  • the stretchable film is fixed to the nonwoven fabric sheet, and the nonwoven fabric sheet and the stretchable film behave integrally.
  • the cell forming sheet and the stretchable part are joined by joints formed intermittently in both directions of the shrinkage direction of the stretchable part and the direction perpendicular to the shrinkage direction of the stretchable part.
  • the disposable diaper according to any one of [8] to [11].
  • the disposable diaper of the present invention has flexibility, cushioning properties, breathability, and the like of elastic material arrangement portions such as the waist end portion of the waist-wrapped portion and the side edge portion of the crotch-wrapped portion (for example, the peripheral edge portion of the leg opening). It has excellent dehumidifying properties and can be easily manufactured. Moreover, the leakage of excrement in the elastic material arrangement part can be effectively prevented.
  • FIG. 1B is a schematic end view schematically showing an A-A ′ cut end surface of the disposable diaper shown in FIG. 1B.
  • FIG. 1B is a schematic end view schematically showing a B-B ′ cut end surface of the disposable diaper shown in FIG. 1B.
  • It is a schematic plan view which shows typically the state which developed the disposable diaper shown in Drawing 1A, and was seen from the outer sheet direction.
  • It is a perspective view which shows typically the expansion-contraction part vicinity of the disposable diaper shown to FIG. 1A.
  • FIG. 1F is a schematic end view schematically showing an X-X ′ cut end surface of the disposable diaper shown in FIG. 1F.
  • FIG. It is the schematic plan view which expands the form of the junction part of the disposable diaper shown to FIG. 1B, and shows the state seen from the top sheet direction.
  • FIG. 2B is a schematic end view schematically showing an X-X ′ cut end surface of the disposable diaper shown in FIG. 2A.
  • FIG. 2B is a schematic end view schematically showing a Y-Y ′ cut end surface of the disposable diaper shown in FIG. 2A.
  • FIG. 3B is a schematic end view schematically showing a Y-Y ′ cut end surface of the disposable diaper shown in FIG. 3A. It is a schematic plan view which expands another form of the junction part of the disposable diaper of this invention, and shows typically the state seen from the top sheet direction.
  • FIG. 4B is a schematic end view schematically showing an X-X ′ cut end surface of the disposable diaper shown in FIG. 4A.
  • FIG. 4B is a schematic end view schematically showing a Y-Y ′ cut end surface of the disposable diaper shown in FIG. 4A. It is a schematic plan view which expands another form of the junction part of the disposable diaper of this invention, and shows typically the state seen from the top sheet direction.
  • FIG. 4B is a schematic end view schematically showing an X-X ′ cut end surface of the disposable diaper shown in FIG. 4A.
  • FIG. 4B is a schematic end view schematically showing a Y-Y ′ cut end surface of the disposable diaper shown in FIG. 4A.
  • FIG. 5B is a schematic end view schematically showing an X-X ′ cut end surface of the disposable diaper shown in FIG. 5A. It is a schematic plan view which expands still another form of the junction part of the disposable diaper of this invention, and shows typically the state seen from the top sheet direction.
  • FIG. 6B is a schematic end view schematically showing an X-X ′ cut end surface of the disposable diaper shown in FIG. 6A.
  • FIG. 6B is a schematic end view schematically showing a Y-Y ′ cut end surface of the disposable diaper shown in FIG. 6A. It is a schematic plan view which expands another form of the junction part of the disposable diaper of this invention, and shows typically the state seen from the top sheet direction.
  • FIG. 7B is a schematic end view schematically showing an X-X ′ cut end surface of the disposable diaper shown in FIG. 7A.
  • FIG. 7B is a schematic end view schematically showing a Y-Y ′ cut end surface of the disposable diaper shown in FIG. 7A.
  • It is a schematic plan view which expands another form of the junction part of the disposable diaper of this invention, and shows typically the state seen from the top sheet direction.
  • FIG. 8B is a schematic end view schematically showing an X-X ′ cut end surface of the disposable diaper shown in FIG. 8A.
  • FIG. 8B is a schematic end view schematically showing a Y-Y ′ cut end surface of the disposable diaper shown in FIG. 8A.
  • FIG. 8A It is a schematic plan view which expands still another form of the junction part of the disposable diaper of this invention, and shows typically the state seen from the top sheet direction. It is a figure which shows the modification of the disposable diaper shown to FIG. 8A, and is a schematic end view which shows typically the end surface equivalent to the X-X 'cut
  • FIG. 11A is a schematic end view schematically showing a cut end surface cut at the center in the width direction of the structural unit shown in FIG. 11A in each step shown in FIG. 11A. It is a perspective view showing typically another embodiment of the disposable diaper of the present invention. It is a partially notched schematic plan view which expand
  • FIG. 12B is a schematic end view schematically showing an A-A ′ cut end surface of the disposable diaper shown in FIG. 12B.
  • FIG. 12B is a schematic end view schematically showing a B-B ′ cut end surface of the disposable diaper shown in FIG. 12B.
  • FIG. 12B is a schematic end view schematically showing an A-A ′ cut end surface of the disposable diaper shown in FIG. 12B in use. It is a schematic plan view which shows typically another embodiment of the disposable diaper of this invention.
  • FIG. 13B is a schematic end view schematically showing an A-A ′ cut end surface of the disposable diaper shown in FIG. 13A.
  • FIG. 13B is a schematic end view schematically showing a B-B ′ cut end surface of the disposable diaper shown in FIG. 13A. It is a schematic back view of the disposable diaper shown to FIG. 13A.
  • FIG. 14B is a schematic end view schematically showing an A-A ′ cut end face of the stretchable nonwoven fabric shown in FIG. 14A.
  • FIG. 14B is a schematic end view schematically showing a B-B ′ cut end face of the stretchable nonwoven fabric shown in FIG. 14A.
  • FIG. 15B is a schematic end view schematically showing an A-A ′ cut end surface of the disposable diaper shown in FIG. 15A. It is a schematic back view of the disposable diaper shown to FIG. 15A.
  • FIG. 15D is a schematic end view schematically showing an X-X ′ cut end surface of the disposable diaper shown in FIG. 15D.
  • It is a schematic plan view which expands and shows typically the form of the junction part of the disposable diaper shown to FIG. 15A, and shows the state which peeled the cell formation sheet.
  • It is a schematic plan view which expands and schematically shows another form of the joint part of a disposable diaper, and shows the state which peeled the cell formation sheet.
  • FIG. 17B is a schematic end view schematically showing an A-A ′ cut end face of the disposable diaper shown in FIG. 17A.
  • FIG. 17B is a schematic end view schematically showing an A-A ′ cut end surface of the disposable diaper shown in FIG. 17A in use.
  • schematic end elevation which shows typically another embodiment of the disposable diaper of this invention.
  • FIG. 20 is a schematic end view schematically showing an A-A ′ cut end face of the disposable diaper shown in FIG. 19B.
  • FIG. 19B is a schematic end view schematically showing a B-B ′ cut end surface of the disposable diaper shown in FIG. 19B.
  • FIG. 20B is a schematic end view schematically showing an A-A ′ cut end face of the disposable diaper shown in FIG. 20A.
  • FIG. 20B is a schematic end view schematically showing a B-B ′ cut end surface of the disposable diaper shown in FIG. 20A.
  • FIG. 12A the perspective view which shows typically the disposable diaper 201B shown to FIG. 20A is expressed the same as FIG. 12A.
  • FIG. 12E the schematic top view which expand
  • the disposable diaper of the present invention is a pre-envelopment that encloses the circumference of the wearer like the disposable diaper 1A shown in FIGS. 1A, 1B, and 1D and the disposable diaper 1B shown in FIGS. 19A, 19B, and 19D.
  • the part 2 and the back enveloping part 6, and the absorber 22 are arrange
  • Disposable diapers includes various forms such as a pants type and a tape type. However, the present invention broadly includes disposable diapers having the specific items, and is not limited to the pants type, the tape type and the like shown below.
  • Front enveloping part and rear enveloping part are parts of the disposable diaper that encapsulate around the wearer's torso.
  • the end of the absorber in the front encapsulation portion and the rear encapsulation portion A portion on the side of the waist edge from the edge and an extension line of the end edge is referred to as a “waist enveloping portion”, and a portion on the crotch side from the edge of the absorber and the extension line of the end edge is referred to as a “tammy encapsulation portion”.
  • “Enveloping the circumference of the torso” means that a part of the disposable diaper is in a form in which a cylindrical structure surrounding the wearer's torso is formed or a form in which the cylindrical structure can be formed.
  • An example of a diaper having a “tubular structure” is a pants-type disposable diaper.
  • the “pants-type” is a disposable pants-type in which one waist opening 10 and a pair of left and right leg openings 12 are formed in advance as in the disposable diaper 1A shown in FIG. 1A and the disposable diaper 1B shown in FIG. 19A. Point to diapers.
  • the disposable diaper 1A shown in FIGS. 1A, 1B, and 1E, and the disposable diaper 1B shown in FIGS. 19A, 19B, and 19E are side edges 62a and 62b of the front exterior body 62 and side edges 65a and 65b of the rear exterior body 65. Are joined together to form a cylindrical structure surrounding the wearer's torso. In such a form, the cylindrical structure is formed by the region between the left and right joints 7 and 8 in the exterior body 16. Therefore, the region will be referred to as the front encapsulation part 2 or the rear encapsulation part 6.
  • the exterior body 16 includes a front exterior body 62 and a rear exterior body 65.
  • the exterior body is not separated into front and rear but is integrally formed and has one waist opening and a pair of left and right leg openings formed in advance.
  • the side edges 202a, 202b and side edges 206a, 206b of the integrally formed exterior body 216 are joined to each other. It is the form in which the cylindrical structure surrounding a wearer's trunk
  • a diaper “a form in which a tubular structure can be formed” a pseudo-pants-type or tape-type disposable diaper can be mentioned.
  • the “pseudo-pants type” means the disposable diaper 1A shown in FIGS. 1A, 1B and 1E, the disposable diaper 1B shown in FIGS. 19A, 19B and 19E, or the disposable diaper 201A shown in FIGS. 12A, 12B and 12E.
  • the disposable diaper 201B shown to FIG. 20A it replaces with the junction parts 7 and 8 or the junction parts 207 and 208, and the disposable diaper of the form which attached the detachable fastener (mechanical fastener etc.) is pointed out.
  • a portion covering the wearer's front side and a portion covering the rear side of the exterior body can be detachably engaged at both side edges by the engaging force of the fastener. Therefore, a cylindrical structure surrounding the wearer's torso can be formed.
  • the cylindrical structure is formed by the region between the fasteners on the left and right side edges of the exterior body. Therefore, the region will be referred to as a front encapsulation portion or a rear encapsulation portion.
  • the “tape type” refers to the left and right side edges of the portion enclosing the wearer's rear side, such as the disposable diaper 301A shown in FIGS. 13A and 13D and the disposable diaper 301B shown in FIGS. 15A and 15D. In the example, it refers to a disposable diaper provided with a fastening tape 311 so as to extend from the side edges 374a and 374b) of the rear side flap 374.
  • the “tape type” has a fastening member (a hook material 348 of a mechanical fastener in the illustrated example) on the base material 350 that constitutes the fastening tape 311. ing. Therefore, the fastening member (the loop material 346 of the mechanical fastener that forms the front patch 313 in the illustrated example) that fastens the front side of the wearer is fastened to form a cylindrical structure that surrounds the wearer's torso. be able to.
  • the “front enveloping part” and the “rear enveloping part” in the “tape type” are diaper main bodies constituted by an absorbent body and a sheet material (top sheet, back sheet, side sheet, etc.) for covering the absorbent body. It is defined as follows according to the shape of.
  • the diaper main body is formed in an hourglass shape (a shape with wide front and rear waist edges and a narrow constriction on the crotch side, the same shape as the exterior body 216 shown in FIGS. 12B and 20A), the front side of the diaper
  • the area between the constriction starting points on the waist edge side of the diaper and the waist end edge on the front side of the diaper is the "front enveloping part", and the straight line connecting the constriction origins on the waist edge side on the diaper rear side
  • region between the waist edge of a diaper rear side will be called a "back covering part.”
  • a rear side flap 374 separate from the diaper main body 370 is provided on the waist edge 370c side of the diaper main body 370.
  • a front side flap 372 separate from the diaper main body 370 is also provided on the side of the waist end edge 370d, the front side flap 372 on the crotch side of the diaper and the side edge 370a of the diaper main body 370 are provided.
  • a region between the straight line connecting the intersections with 370b and the waist edge 370d is a "front covering part”, and the intersections between the rear side flap 374 on the crotch side of the diaper and the side edges 370a and 370b of the diaper main body 370
  • a region between the connecting straight line and the waist end edge 370c is referred to as a “rear envelope”.
  • the diaper body has only a rear side flap that is separate from the diaper body and no front side flap, the intersection of the rear side flap on the diaper crotch side and the side edge of the diaper body
  • the area between the straight line connecting the waist and the edge of the waist is the ⁇ back cover part '', and when the diaper body is folded so that the waist edges overlap each other, the area that overlaps the ⁇ back cover part '' It will be referred to as a “pack”.
  • Inseam enveloping part refers to a part of the disposable diaper that encloses the inseam of the wearer. In other words, it is a portion between the front encapsulation portion and the rear encapsulation portion.
  • an absorber for absorbing and holding excrement is disposed in the crotch envelope. It does not specifically limit about the structure of an absorber, The absorber used for a conventionally well-known absorbent article can be used. A specific configuration of the absorber will be described later.
  • the disposable diaper 1A shown in FIGS. 1A, 1B, 1D, and 1E and in the disposable diaper 1B shown in FIGS. 19A, 19B, 19D, and 19E, it is placed between the front exterior body 62 and the rear exterior body 65.
  • the absorbent main body 14 is arranged and joined so as to be passed (joined portion 28).
  • the front envelope part 2 is formed by the front exterior body 62
  • the rear envelope part 6 is formed by a part of the rear exterior body 65
  • the crotch cover is formed by a part of the rear exterior body 65 and a part of the absorbent main body 14.
  • a packet part 4 is formed.
  • the absorber 22 is disposed as a constituent member of the absorbent main body 14.
  • an inseam enveloping portion 204 is formed by the absorbent main body 14 and the exterior body 216.
  • An area between the straight line connecting the constriction starting points on the side of the waist edge 202c on the side edge of the exterior body 216 and the straight line connecting the constriction starting points on the side of the waist edge 206c is the crotch enveloping portion 204.
  • a crotch envelope portion 304 is formed by the diaper main body 370. Then, a straight line connecting the intersections of the front side flap 372 and the side edges 370a and 370b of the diaper main body 370 on the crotch side of the diaper, and an intersection of the rear side flap 374 and the side edges 370a and 370b of the diaper main body 370 on the crotch side of the diaper. The area between the straight lines connecting each other is the crotch envelope portion 304.
  • the disposable diaper of the present invention includes a first embodiment and a second embodiment described below.
  • the back cover part 6 and the like are formed with an elastic part 80 made of an elastic nonwoven fabric, and the elastic part 80 Is formed so as to shrink in a direction along the circumference of the trunk.
  • the stretchable part is composed of a stretchable nonwoven fabric in which the stretchable material is fixed to the nonwoven fabric sheet, and the nonwoven fabric sheet and the stretchable material behave integrally, and 2) the part where the stretchable part 80 is formed.
  • a cell forming sheet 82 made of a non-woven fabric is disposed on a part of the skin contact surface in 3), and 3) a joining portion 84 for joining the cell forming sheet 82 and the stretchable portion 80 is formed.
  • a cell 86 extending in the crossing direction intersecting the contraction direction of the stretchable part 80 is defined between the forming sheet 82 and the stretchable part 80, and 4) one end of the cell 86 is opened and the other end is closed. It is a non-penetrating cell.
  • the distance between the cell forming sheet 82 and the joint portion 84 of the stretchable portion 80 is narrowed by the shrinkage of the stretchable portion 80.
  • the cell forming sheet 82 and the expansion / contraction part 80 are bent and deformed into a corrugated shape, and the cell forming sheet 82 and the expansion / contraction part 80 other than the joining part 84 (non-joining part) are separated from each other.
  • a functioning cell 86 is formed.
  • the diaper when the wearer moves (moves from a standing position to a sitting position, walks, etc.), the diaper is deformed, and the cell 86 is also deformed following the deformation. With the deformation of the cell 86, air and moisture in the inner space of the diaper are taken into the cell 86 and discharged.
  • one end of the cell 86 is opened as shown in FIGS. 1F and 2B, and the end of the cell forming sheet 82 in the opening is a free end. Therefore, the movement of the cell forming sheet 82 and the stretchable part 80 is not restricted in the opening, and the cell forming sheet 82 and the stretchable part 80 can be sufficiently bent. That is, the cell 86 can be greatly opened. Therefore, ventilation and dehumidification of the inner space of the diaper are promoted, and the inner space of the diaper can be made a comfortable environment.
  • the cell exhibits a buffering function like an air cushion. Therefore, the skin contact is soft and the flexibility around the waist of the diaper can be improved. That is, the wearer can obtain a comfortable wearing feeling.
  • the cell formation sheet 82 and the expansion-contraction part 80 can be bent sufficiently, a high convex part can be formed with the cell formation sheet 82 and the expansion-contraction part 80.
  • FIG. Accordingly, the cell 86 has a bulky structure, and the effect of filling the gap between the wearer's skin and the stretchable part 80 is high. That is, it is excellent in flexibility, cushioning properties, and leakage prevention effects.
  • the cell is a non-penetrating cell having one end opened and the other end closed, the excrement does not leak through the cell. Moreover, the excrement which has flowed can also be captured in the cell. Therefore, the flexibility and breathability of the stretchable part can be improved while preventing the excrement from leaking.
  • the second embodiment of the disposable diaper of the present invention is similar to the disposable diaper 301B shown in FIGS. 15A to 15C.
  • the stretchable portion 380 is fixed to the nonwoven fabric sheet, and the nonwoven fabric sheet and the stretchable material. 2) that stretchable parts 380 are formed at least on the left and right side edges of the crotch envelopment part 304, and 3) the stretchable part 380 is a crotch envelopment part.
  • 304 is formed so as to shrink in the direction along the side edges (in this example, the side edges 370a and 370b of the diaper main body 370). 4) A part of the skin contact surface of the crotch envelope portion 304 is repelled.
  • a cell forming sheet 382 made of an aqueous non-woven fabric is disposed; and 5) a joint that intermittently joins the cell forming sheet 382 and the stretchable portion 380 in a direction along the side edge of the crotch envelope portion 304. 6)
  • the cells 386 extending in the intersecting direction intersecting the side edges of the crotch envelope portion 304 are defined by the joint portion 384 between the cell forming sheet 382 and the stretchable portion 380. It is characterized by this.
  • the distance between the joint portions 384 of the cell forming sheet 382 is also narrowed by contraction of the stretchable portion 380.
  • the cell forming sheet 382 is bent and deformed into a corrugated shape, and the cell forming sheet 382 and the stretchable portion 380 are separated from the portion other than the joining portion 384 (non-joining portion), and the cell 386 functions as a vent pipe and a cushion. Is formed.
  • Cell 386 exhibits a buffering function like an air cushion. Therefore, the skin contact is soft and the flexibility around the waist of the diaper can be improved. That is, the wearer can obtain a comfortable wearing feeling.
  • the diaper when the wearer takes a sitting position from a standing position, the diaper is compressed from the outside, and moisture in the inner space of the diaper passes through the cell 386 and is discharged to the outer space. Furthermore, when the wearer walks, the crotch enveloping part of the diaper is deformed by the movement of the leg, so that the moisture in the internal space of the diaper is discharged to the external space by the deformation, and the air in the external space is exchanged for this. It flows into the inner space of the diaper. Therefore, the inner space of the diaper can be made a comfortable environment.
  • Expansion / contraction part The stretchable part is made of a stretchable nonwoven fabric.
  • Stretchable nonwoven fabric is not only stretchable nonwoven fabric itself, but also stretched elastic material (elastic material such as rubber or thermoplastic elastomer) is fixed (bonded) to the nonwoven fabric used as the base material. Nonwoven fabrics imparted with properties are also included.
  • nonwoven fabric itself having stretchability examples include commercially available elastic nonwoven fabric and elastomer spunbond nonwoven fabric. Specifically, Straflex (produced by Idemitsu Unitech Co., Ltd.), Espancione (produced by KB Seiren Co., Ltd.) and the like can be suitably used under the trade names below. These elastic nonwoven fabrics and elastomer spunbond nonwoven fabrics are stretchable by themselves.
  • a non-woven fabric in which stretched stretchable material is fixed to the non-woven fabric to give stretchability can be configured by appropriately combining and joining the non-woven fabric and stretchable material.
  • an elastic material 399 in an expanded state is disposed between a plurality of nonwoven fabric sheets 397 and 398 as shown in FIGS. 14A to 14C as a material constituting the elastic part 381.
  • the stretchable material 399 is fixed to the plurality of nonwoven fabric sheets 397 and 398, and a stretchable nonwoven fabric in which the plurality of nonwoven fabric sheets 397 and 398 and the stretchable material 399 behave integrally is used.
  • the stretchable nonwoven fabric in which the nonwoven fabric and the stretchable material behave integrally, unlike the pant-type absorbent articles of Patent Documents 1 to 5, the stretchable material does not stretch beyond the sheet width. In addition, the stretchable material is not excessively stretched beyond the ideal stretch rate.
  • the stretchable nonwoven fabric may be one in which the stretchable film is fixed to the nonwoven fabric sheet and the nonwoven fabric sheet and the stretchable film behave integrally.
  • a stretchable nonwoven fabric also has the same effect as a stretchable nonwoven fabric having a structure in which stretched stretchable materials are fixed between layers of a plurality of nonwoven fabric sheets.
  • the nonwoven fabric sheet is fixed to at least one surface of the stretchable film.
  • Nonwoven fabric sheets may be fixed on both sides of the stretchable film.
  • disposable diapers have a structure in which a linear elastic material is disposed between nonwoven fabric layers. Therefore, it is not always necessary to provide an independent stretchable nonwoven fabric to configure the stretchable portion, and the stretchable portion may be configured using a part of the structure of a conventional disposable diaper as the stretchable nonwoven fabric.
  • the disposable diaper 1A shown in FIG. 1D includes an interlayer between the folded portion 88 of the outer sheet 63 and the pressing sheet 68 constituting the front exterior body 62, and a folded portion 88 and the retaining sheet 68 of the outer sheet 66 constituting the rear exterior body 65.
  • the stretchable waist elastic material 42 is disposed between the layers.
  • the waist elastic material 42 is fixed to the folded portion 88 and the pressing sheet 68. That is, a stretchable nonwoven fabric (stretchable portion 80) that behaves integrally is formed by the folded portion 88, the pressing sheet 68, and the waist stretchable material 42.
  • the disposable diaper 201A shown in FIG. 12C and the disposable diaper 201B shown in FIG. 20B have the three-dimensional gather stretchable material 36 in an expanded state disposed between the base and the folded portion of the nonwoven fabric sheet 32 constituting the three-dimensional gather 26. Yes.
  • the three-dimensional gather stretchable material 36 is fixed to the base portion and the folded portion of the nonwoven fabric sheet 32. That is, a stretchable nonwoven fabric (stretchable portion 280) that behaves integrally with the base portion, the folded portion, and the three-dimensional gather stretchable material 36 of the nonwoven fabric sheet 32 is configured.
  • a stretched three-dimensional gather elastic material 337 is disposed between the nonwoven fabric sheet 333 constituting the three-dimensional gather 327 and the base 379 of the nonwoven fabric sheet 334.
  • the three-dimensional gather stretchable material 337 is fixed to the nonwoven fabric sheet 333 and the base 379, and the non-woven fabric sheet 333, the base 379, and the three-dimensional gather stretchable material 337 constitute a stretchable nonwoven fabric (stretchable portion 381).
  • a stretched three-dimensional gather stretchable material 36 is disposed between the base and the folded portion of the nonwoven fabric sheet 32 constituting the three-dimensional gather 26.
  • the three-dimensional gather stretchable material 36 is fixed to the base and the folded portion of the nonwoven fabric sheet 32, and a stretchable nonwoven fabric (stretchable portion 81) that behaves integrally is formed by the base, the folded portion, and the three-dimensional gather stretchable material 36 of the nonwoven fabric sheet 32.
  • stretchable nonwoven fabric stretchable portion 81
  • the disposable diaper 301A shown in FIG. 13B and the disposable diaper 301B shown in FIG. 15B are stretched between the side sheet 319 and the back sheet 320 constituting the diaper main body 370 or between the side sheet 319 and the cover sheet 324.
  • Leg elastic material 340 is disposed.
  • the leg elastic material 340 is fixed to the side sheet 319, the back sheet 320, and the cover sheet 324. That is, a stretchable nonwoven fabric (stretchable portion 380) that behaves integrally is constituted by the side sheet 319, the backsheet 320, the cover sheet 324, and the leg stretchable material 340.
  • the expansion / contraction part has a direction along the waist and a direction along the side edge of the crotch enveloping part at least one of the front enveloping part, the rear enveloping part, and the crotch encapsulating part. Are formed to contract in at least one of the directions.
  • the stretchable part 80 is formed so as to shrink in a direction along the circumference of the front exterior body 62 constituting the front enveloping part 2.
  • the expansion / contraction part 80 is formed in the back exterior body 65 which comprises the back envelope part 6 so that it may shrink
  • the disposable diaper 201A shown to FIG. 12C has the expansion-contraction part 280 formed in the absorptive main body 14 which comprises a crotch envelope part so that it may shrink
  • 13C has a diaper main body 370 constituting the front enveloping part 302 and the rear enveloping part 306 in a direction along the periphery of the diaper (that is, a direction along the waist edges 370c and 370d).
  • a stretchable portion 381 is formed so as to shrink.
  • the stretchable part is formed so as to shrink in the direction along the left and right side edges of the crotch envelope.
  • an expansion / contraction part 380 is formed so as to contract in a direction along the side edges 370a and 370b of the diaper main body 370 constituting the crotch envelope part.
  • the disposable diaper 1B shown to FIG. 19C has the expansion-contraction part 81 so that it may shrink
  • the disposable diaper 201B shown in FIG. 20B also has an expansion / contraction part 81 having the same structure as the disposable diaper 1B shown in FIG. 19C.
  • the waist edge of the front envelope part 2 in this example, the waist edge 62c of the front exterior body 62
  • the waist edge of the rear envelope part 6 A configuration in which a linear elastic material (waist elastic material 42 in this example) is disposed along the edge (in this example, the waist edge 65c of the rear exterior body 65) can be given.
  • Forming to shrink in the direction along the side edge of the crotch envelope means that the stretchable nonwoven fabric is arranged so that it can be stretched and contracted in the direction along the side edge of the crotch envelope Means that.
  • the side edge of the crotch envelope portion 304 in this example, the side edge of the diaper main body 370.
  • a linear stretchable material in this example, a leg stretchable material 340 may be arranged.
  • the configuration is not limited to the above.
  • the elastic material may be arranged so as to draw a convex curve upward or downward with respect to the direction along the waist of the diaper, or left with respect to the direction along the side edge of the crotch envelope.
  • An elastic material may be arranged so as to draw a convex or right convex curve.
  • the stretchable part is formed in at least one of the front enveloping part, the rear enveloping part, and the crotch enveloping part.
  • the formation part of the expansion / contraction part is not limited to the vicinity of the already described waist edge or the side edge of the crotch envelope.
  • a disposable diaper 201A shown in FIG. 12C has a linear elastic material (in this example, a three-dimensional gather expansion / contraction) at the upper end of the three-dimensional gather 26 provided along the side edge of the absorbent main body 14 constituting the crotch envelope portion 204.
  • the material 36 is arranged, and the stretchable part 280 is formed.
  • a cell forming sheet 282 is joined to the stretchable part 280.
  • a cell is placed in the tammy stretchable part.
  • the forming sheet may be joined.
  • An elastic part formed by the leg elastic material 38 or the three-dimensional gather elastic material 36 at the side edge part 4 and an elastic part formed by the leg elastic material 40 at the end of the crotch envelope part 4 on the rear envelope part 6 side it is preferable to join the cell forming sheet to these stretchable parts.
  • Such a form can form a cell structure so as to surround the wearer's leg. Therefore, flexibility can be imparted around the leg opening while preventing leakage of excrement from the leg opening.
  • the stretchable part is formed at least on the left and right side edges of the crotch envelope.
  • the said expansion-contraction part may be formed in the other part.
  • an expansion / contraction part 80 made of an elastic nonwoven fabric is formed at least on the end of the crotch envelopment part 4 on the side of the back encapsulation part 6 so that the expansion / contraction part 80 contracts in the waist circumference direction.
  • a cell forming sheet 83 made of a water-repellent nonwoven fabric is disposed on a part of the skin contact surface at the end portion on the rear envelope portion 6 side.
  • the cell forming sheet 83 is laminated on the expansion / contraction part, and the cell forming sheet 83 and the expansion / contraction part are joined to each other by the joining part 85 that is intermittently formed toward the waistline direction.
  • a cell structure can also be formed at the end of the encapsulating part 6 side.
  • the expansion / contraction part 80 which consists of an elastic nonwoven fabric is formed in the edge part by the side of the crotch envelope part 4 in the front envelope part 2 so that the expansion / contraction part 80 may shrink
  • a cell-forming sheet 83 made of a water-repellent nonwoven fabric is disposed on a part of the skin contact surface at the end on the crotch enveloping portion 4 side.
  • the cell forming sheet 83 is laminated on the stretchable part, and the cell forming sheet 83 and the stretchable part are joined by the joint part 85 formed intermittently toward the waist direction, so that the crotch of the front enveloping part 2
  • a cell structure can also be formed at the end on the side of the encapsulating part 4.
  • the expansion / contraction part 81 formed on the side edge part of the crotch enveloping part 4 and the end part on the crotch enveloping part 4 side of the front enveloping part 2
  • the cell forming sheets 82 and 83 are stacked on the stretched leg stretchable part, and the cell forming sheets 82 and 83 and the stretched leg stretchable part are intermittently formed in the contraction direction of the leg stretchable part.
  • the cell structure of the crotch covering part 4 and the cell structure of the front covering part 2 and / or the back covering part 6 are arrange
  • Such a structure is preferable because flexibility can be imparted to the leg stretchable part.
  • the cell formation sheet 82 which consists of a water-repellent nonwoven fabric is arrange
  • the cell forming sheet 82 forms a cell structure that functions as a vent pipe and a cushion.
  • a cell-forming sheet 382 made of a water-repellent nonwoven fabric is disposed on a part of the skin contact surface of the crotch enveloping portion 304 as in the disposable diaper 301B shown in FIG. 15A.
  • the cell forming sheet 382 forms a cell structure that functions as a vent pipe and a cushion near the leg opening of the diaper.
  • “Skin contact surface” means a surface that directly contacts the wearer's skin when the disposable diaper is worn, that is, the innermost surface of the disposable diaper.
  • the “water-repellent nonwoven fabric” the same material as the side sheet described later can be used. By using the water-repellent nonwoven fabric, it becomes difficult for leakage of excrement transmitted through the cell forming sheet to occur.
  • Part means that the cell forming sheet may not be disposed on the entire skin contact surface of the portion where the stretchable portion is formed. It does not specifically limit about the site
  • the cell forming sheet 82 is disposed in the vicinity of the waist edge of the rear envelope portion 6 (in this example, the waist edge 65c of the rear exterior body 65). Further, it is preferable to dispose the cell forming sheet 82 in the vicinity of the waist edge of the front envelope portion 2 (in this example, the waist edge 62c of the front exterior body 62). Moreover, as shown in FIG. 13A, it is preferable to arrange the cell forming sheet 382 on the left and right side edges of the crotch envelope 4 (in the vicinity of the side edges 370a and 370b of the diaper main body 370 in this example). In any case, it is preferable to arrange so as to cover 60% or more of the side edge of the waist edge or crotch envelope, and to cover the entire side edge of the waist edge or crotch envelope. More preferably.
  • the second embodiment it is preferable to arrange at least the left and right side edges of the crotch envelope part 304 (in this example, the side edges 370a and 370b of the diaper main body 370). In that case, as shown to FIG. 15A, it is preferable to arrange
  • the basis weight of the cell forming sheet is preferably 10 to 50 g / m 2 . If it is less than 10 g / m 2 , the bulk of the sheet is too small, and there is a risk of causing problems such as the adhesive that fixes the stretchable material permeates through the sheet. On the other hand, if it exceeds 50 g / m 2 , 1) the sheet rigidity is too high and it becomes difficult to bend in conjunction with the contraction of the elastic material, and it becomes difficult to form a cell structure. However, there is a risk that the feeling of wear will be reduced.
  • the cell forming sheet 282 shown in FIGS. 12B and 12C, the cell forming sheet 382 shown in FIGS. 13A and 13B, and the cell forming sheet 382 shown in FIG. 18B are configured as members independent of other members. However, the cell forming sheet need not be configured as an independent member.
  • a part of the outer sheet 66 constituting the stretchable nonwoven fabric (stretchable part 80) is folded to form the folded part 88, and the folded part 88 is used as the cell forming sheet 82. Yes.
  • the disposable diaper 201A shown in FIG. 12C it is possible to adopt a configuration in which a folded portion is formed by folding a part of the nonwoven fabric sheet 32 constituting the three-dimensional gather 26 and the folded portion is used as a cell forming sheet. .
  • a part of the nonwoven fabric sheet 334 constituting the stretchable nonwoven fabric is folded to form a folded part, and the folded part is used as the cell forming sheet 383.
  • a part of the nonwoven fabric sheet 333 constituting the three-dimensional gather 327 is used as the cell forming sheet 383.
  • a part of the nonwoven fabric sheet 333 constituting the three-dimensional gathers 326, 327 is used as the cell forming sheet 383.
  • 381 is also used as a nonwoven fabric sheet.
  • the cell formation sheet 282 is arrange
  • FIG. 12F At the time of use of the disposable diaper 201A, as shown in FIG. 12F, the three-dimensional gather 26 contacts the wearer's skin in the form of falling outward. Therefore, the cell forming sheet 282 disposed on the inner surface of the three-dimensional gather 26 comes into contact with the wearer's skin, and the effect of the present invention is exhibited.
  • the dashed-dotted line in FIG. 12F shows a wearer's buttocks.
  • the cell forming sheet may be formed with a hole for communicating the inner space of the diaper with the cell formed by the cell forming sheet.
  • a hole means an opening that allows the internal space of the diaper to communicate with the cell, and its shape is not particularly limited. For example, shapes such as a circle, an ellipse, and a polygon (triangle, square, etc.) can be mentioned.
  • holes include not only those that are always open, but also those that can be opened and closed. For example, by forming slits with convex trajectories or a plurality of intersecting slits in the cell forming sheet, a hole having a tongue piece functioning as a valve can be obtained. The tongue piece allows moisture to pass through while preventing urine and body fluid from entering the cell.
  • the shape of the slit is not particularly limited.
  • the “slit having a convex locus” include a) a slit having a curved portion (such as an inverted U-shaped slit) and b) a slit having a bent portion (such as an inverted V-shaped slit).
  • Examples of “a plurality of intersecting slits” include c) a cross-shaped slit formed by intersecting two slits, and d) a star-shaped slit formed by intersecting three slits. Can do.
  • the hole is formed in a portion of the cell forming sheet where the cell is formed (that is, a region between the joint portions).
  • the cell forming sheet 82 is formed by the folded portion 88 as in the disposable diaper 1A shown in FIG. 1D, or the cell forming sheet 383 is folded up of the nonwoven fabric sheet 334 as in the disposable diaper 301C shown in FIG.
  • a hole is formed in the vicinity of the distal end portion of the folded portion, and a portion closer to the distal end of the folded portion than the hole is joined to the expandable portion.
  • Such a form is preferable because the hole is forcibly opened by the contraction of the stretchable portion.
  • the forcibly opened holes become the cell end openings. Accordingly, the moisture in the diaper inner space flows into the cell through the forcibly opened hole, passes through the cell, and the folded line portion (in the example of FIG. 1D, the waist edges 62c and 65c, the example of FIG. 17C). Then, the cell forming sheet is permeated at the upper edge of the three-dimensional gather 327 and discharged to the outer space of the diaper.
  • Such a configuration is preferable in that moisture is likely to flow into the cell and moisture is easily discharged to the outside of the diaper as compared with a structure in which holes are simply formed in the cell forming sheet.
  • a plurality of holes may be formed in the cell forming sheet. By forming a plurality of holes, the air permeability is improved and the moisture is easily discharged to the outside of the diaper.
  • the specific number of “plurality” is not particularly limited. It depends on the opening area of the hole. If the opening area is 0.5 to 10 mm 2 , 5 to 200 holes are preferably formed, and more preferably 10 to 100 holes are formed. The effect of improving air permeability can be obtained by setting the number to 5 or more. On the other hand, by setting it to 200 or less, it is possible to effectively prevent urine and body fluid from flowing into the cell.
  • the drug is adhered to the cell forming sheet.
  • the drug By attaching the drug, it is possible to impart a medicinal effect based on the drug to the cell-forming sheet that is in direct contact with the skin of the wearer.
  • the type of drug is not particularly limited.
  • moisturizing agents aloe extract, propylene glycol, etc.
  • skin care additives having urease inhibitory activity eucalyptus extracts, etc.
  • disinfectants, antibacterial agents edoacetic acid, benzal chloride) Luconium etc.
  • deodorants variable polyphenol compounds etc.
  • [2-5] Cell In the disposable diaper of the present invention, as shown in FIGS. 1D and 1F, 15D and 15F, joint portions 84 and 384 for joining the cell forming sheets 82 and 382 and the stretchable portions 80 and 380 are formed.
  • the joining portions 84 and 384 intermittently join the cell forming sheets 82 and 382 and the stretchable portions 80 and 380 toward the contraction direction of the stretchable portion.
  • cells 86 and 386 extending in a crossing direction intersecting with the contraction direction of the stretchable parts 80 and 380 are partitioned and formed between the cell forming sheets 82 and 382 and the stretchable parts 80 and 380 by the joint parts 84 and 384. .
  • the distance between the joint portions 84, 384 of the cell forming sheets 82, 382 and the stretchable parts 80, 380 is also narrowed, and the cells 86, 386 are formed.
  • the cells 86 and 386 improve the breathability and flexibility of the diaper.
  • a precise joining technique such as joining sheets in consideration of the position of the stretchable material as in the pant-type absorbent articles described in Patent Documents 1 to 5 is unnecessary. Therefore, it can be manufactured easily.
  • a structure in which the cell-forming sheet is loosely bonded to a stretchable nonwoven fabric in a natural state is preferable. That is, the structure in which the cell-forming sheet is longer in the natural state than the stretchable nonwoven fabric is preferable. According to the said structure, expansion
  • the structure can be formed by the following method, for example.
  • a stretchable nonwoven fabric in which the nonwoven fabric itself, such as an elastic nonwoven fabric, is stretchable is in its original size in a natural state (a state where no tension is applied). Therefore, when the stretchable part is formed of the stretchable nonwoven fabric, it is preferable to join the cell forming sheet in a state where the stretchable nonwoven fabric is stretched from its original size.
  • the stretchable nonwoven fabric in which stretched stretch materials are disposed between the layers of the plurality of nonwoven fabric sheets is in a state of being contracted from the original size in a natural state. Therefore, when the stretchable part is formed by the stretchable nonwoven fabric, it is preferable to join the cell forming sheet in a state where the stretchable nonwoven fabric is stretched from the contracted state.
  • the stretchable part is formed by a stretchable nonwoven fabric in which stretched stretchable materials are arranged between layers of a plurality of nonwoven fabric sheets, the nonwoven fabric sheet and the cell forming sheet, which are constituent materials of the stretchable nonwoven fabric, are laminated and joined. As a result, cells are formed in advance. Then, it is preferable to form a stretchable nonwoven fabric by a method in which a stretchable stretch material is disposed and fixed between layers of the nonwoven fabric sheet to which the cell forming sheet is bonded and another nonwoven fabric sheet.
  • the cell forming sheet is bonded to the non-woven fabric sheet on which no contractile force acts. Therefore, the cell forming sheet can be easily bonded as compared with the case where the cell forming sheet is bonded to the stretchable nonwoven fabric.
  • the cell forming sheet when joining a cell formation sheet with an elastic nonwoven fabric, it is necessary to join in the state which extended the elastic nonwoven fabric. Therefore, the cell forming sheet cannot be bonded to a desired state, and there may be a problem that the cell forming sheet is wrinkled or a device for bonding becomes complicated.
  • the joining of the stretchable part and the cell forming sheet is performed by joining the surface of the stretchable nonwoven fabric constituting the stretchable part and the cell forming sheet. That is, the stretchable material or stretchable film disposed between the layers of the nonwoven fabric sheet and the cell forming sheet are not directly joined.
  • the joint between the stretchable nonwoven fabric and the cell forming sheet can be fixed by adhesion using an adhesive, welding by heat, ultrasonic waves, or the like.
  • an adhesive a hot-melt adhesive or other highly fluid adhesive can be used.
  • the welding method include heat sealing.
  • “Intermittent” means that the joint is formed discontinuously or intermittently. In this joined state, the stretchable part and the cell forming sheet are inseparable from each other at the joined part. On the other hand, in the non-joined part, the stretchable part and the cell forming sheet are not restrained each other and can be freely separated. Note that “intermittent” may be intermittent with respect to the contraction direction of the stretchable portion.
  • the shape of the joint portion is particularly limited as long as it can form a non-penetrating cell that extends in the crossing direction intersecting the shrinking direction of the stretchable portion and that is open at one end and closed at the other end.
  • the joint part is intermittently formed with respect to the contraction direction of the stretchable part.
  • An example is a zigzag shape continuous in the shrinking direction. Moreover, it is good also as a wavy shape which follows the shrinkage
  • the distance between the joints at the open end of the cell is preferably 2 to 50 mm, and particularly preferably 5 to 10 mm.
  • FIG. 2A is a schematic plan view schematically showing an enlarged form of the joint portion 84 of the disposable diaper 1A shown in FIG. 1B.
  • the joint portion 84 is formed in a zigzag shape toward the torso circumference direction (the left-right direction in the drawing). That is, the joint portion 84 is intermittently formed in the contraction direction (the left-right direction in the drawing) of the stretchable portion 80.
  • Each of the cells 86 is formed so that the shape in plan view is a triangular shape.
  • a cell row is formed in which a plurality of cells 86 are arranged in parallel in the contraction direction of the expansion / contraction part 80. Therefore, moisture or the like can easily flow in the front-rear direction of the diaper, and exhaust of moisture or the like from the inner space of the diaper can be promoted. Moreover, it is easy to make a diaper follow the curvilinear shape around a wearer's waist, and it is excellent also in fitting property and a feeling of wear.
  • this cell row is formed by alternately arranging outward cells and inward cells.
  • the air in the external space of the diaper is taken into the outward cell, and the moisture in the internal space of the diaper is taken into the inward cell. Therefore, the air and the moisture are exchanged between adjacent outward cells and inward cells, and the exhaust of the moisture is promoted.
  • outward cells and inward cells are alternately partitioned by zigzag joints 84.
  • 2A is formed in a continuous linear shape.
  • Such a form has an effect that it is difficult to cause pain even when a joint portion that tends to become hard to touch touches the skin.
  • the interval between adjacent dot-like joints needs to be 5 mm or less.
  • a circular shape etc. can be mentioned as a shape of a dot-shaped junction part.
  • 3A and 3B are as follows: 1) A cell row in which a plurality of cells 86 are arranged in parallel toward the contraction direction of the expansion / contraction section 80 is formed by the joint section 84; 2) 2A to 2C are common in that the outward cells and the inward cells are alternately arranged in the cell row. Therefore, the effects resulting from these forms are the same as those shown in FIGS. 2A to 2C.
  • the form shown in FIGS. 3A and 3B is different from the form shown in FIGS. 2A to 2C in that a slit 89 is formed in the vicinity of the waist edge 65c of the cell forming sheet. By forming the slit 89, the opening of the outward cell can be exposed to the waist edge 65c side, and air permeability and dehumidification can be improved.
  • FIGS. 4A to 4C uses a nonwoven fabric sheet 69 as the cell forming sheet 82A.
  • a plurality of cells 86A are arranged in parallel in the contraction direction of the stretchable portion 80 by the joint portion 84A.
  • the joining portion 84A is formed in a wavy shape toward the circumference of the diaper.
  • 5A and 5B uses a nonwoven fabric sheet 69 as the cell forming sheet 82A.
  • a plurality of cells 86B are arranged in parallel toward the contraction direction of the stretchable portion 80 by the joint portion 84B.
  • 2A to 2C are common to the form shown in FIG. 2A in that cell rows are formed. Therefore, the effects resulting from these forms are the same as those shown in FIGS. 2A to 2C.
  • FIGS. 5A and 5B is different from that shown in FIGS. 2A to 2B in that a plurality of (two in this example) cell rows are arranged in the crossing direction that intersects the shrinking direction of the expansion / contraction part 80. It is different from the form shown in FIG. 2C. Further, cell rows close to the waist edge 65c (upper cell row) are arranged in parallel with outward cells, and cell rows far from the waist edge 65c (cell row below the drawing) are arranged in parallel with inward cells. It has been done. Compared with the configurations shown in FIGS. 2A to 2C, such a configuration is easy to deform the cells following the wearer's movement because the cell rows are divided into multiple stages.
  • the joining portion 84 ⁇ / b> B is formed in a wavy line shape so that the U-shape continues in the circumferential direction of the diaper.
  • FIGS. 5A and 5B use the folded portion 88 of the outer sheet 66 as the cell forming sheet 82B and the non-woven fabric sheet 67 as the cell forming sheet 82C.
  • the cell forming sheet 82C faces the crossing direction intersecting with the shrinking direction of the stretchable portion 80.
  • a plurality of (two in this example) cell rows are arranged, and 2) the joining portion 84C is formed in a wavy shape arranged so that the U-shape is continuous toward the circumference of the diaper.
  • FIGS. 5A and 5B is common. Therefore, the effects resulting from these forms are the same as those shown in FIGS. 5A and 5B.
  • inward cells are arranged in parallel in all the cell columns.
  • FIGS. 6A to 6C it intersects with the contraction direction (left and right direction in the drawing) of the expansion / contraction part 80 in the joint portion 84C that defines the cell 86C in one cell row (the cell row on the lower side in the drawing).
  • the plurality of cell rows are arranged so as not to be arranged on a straight line.
  • an extension line of a portion extending in the intersecting direction (vertical direction in the drawing) of the joint portion 84C that defines the cell 86C in one cell row (the cell row on the lower side of the drawing) is adjacent to the one cell row.
  • a plurality of cell columns are arranged so as to pass through the cell 86C in the cell column to be processed.
  • the part of the joint part 84C becomes a trough part, and there is a possibility that excrement may leak through the trough part.
  • the positions of the joints 84C are shifted so that the valleys of the cell rows formed in multiple stages are not continuous. Therefore, there is an advantage that excrement is less likely to leak through the valley.
  • the inward cells in the upper cell row in the drawing capture the excrement transmitted through the joint 84C of the lower cell row in the drawing by arranging the inward cells in the upper cell row in the drawing. It is excellent in leakage prevention effect.
  • FIGS. 7A to 7C uses a nonwoven fabric sheet 67 as the cell forming sheet 82C.
  • the joint 84D is formed in a zigzag shape in the direction around the waist of the diaper (the left-right direction in the drawing).
  • a cell row is formed by alternately arranging outward cells and inward cells. In this respect, it is common with the embodiment shown in FIGS. 2A to 2C. Therefore, the effects resulting from these forms are the same as those shown in FIGS. 2A to 2C.
  • two independent cell forming sheets 82C corresponding to each cell row are provided. That is, the folded portion 88 of the outer sheet 66 is not used as a cell forming sheet.
  • the independent cell forming sheet 82C all the cells 86D are exposed toward the inner space of the diaper, the waist edge 65c.
  • FIGS. 8A to 8C uses a non-woven fabric sheet 67 as the cell forming sheet 82C.
  • the joint portion 84E is formed in a zigzag shape in the direction around the waist of the diaper (the left-right direction in the drawing).
  • the cell row is formed by alternately arranging outward cells and inward cells.
  • 7A to 7C is common to the configuration shown in FIGS. 7A to 7C in that the formation sheets 82A and 82B are provided. Therefore, the effect resulting from this embodiment is the same as that shown in FIGS. 7A to 7C.
  • FIGS. 8A to 8C it intersects with the contraction direction (horizontal direction in the drawing) of the expansion / contraction part 80 in the joint portion 84E that defines the cell 86E in one cell row (the cell row on the lower side in the drawing).
  • the plurality of cell rows are arranged so as not to be arranged on a straight line.
  • an extension line of a portion extending in the intersecting direction (vertical direction in the drawing) of the joint portion 84E that defines the cell 86E in one cell row (the cell row on the lower side of the drawing) is adjacent to the one cell row.
  • a plurality of cell columns are arranged so as to pass through the cell 86E in the cell column to be performed. Accordingly, the same effects as those shown in FIGS. 6A to 6C can be obtained.
  • FIG. 9 The form shown in FIG. 9 is the same as the form shown in FIGS. 8A to 8C, and the cell string is increased from two stages to three stages.
  • three independent nonwoven fabric sheets 71 corresponding to each cell row are used as the cell forming sheet 82D.
  • a plurality of cells 86 ⁇ / b> F are formed by the joint portions 84 ⁇ / b> F formed in a zigzag shape toward the waist of the diaper (the horizontal direction in the drawing).
  • This form has the same effect as the form of FIGS. 8A to 8C.
  • the flexibility and fit are further improved as compared with the embodiments shown in FIGS. 8A to 8C.
  • FIG. 10A or 10B is the same as the form shown in FIGS. 8A to 8C, and only the form of the cell forming sheets 82E and 82F is different.
  • the form shown in FIG. 10A or FIG. 10B uses nonwoven fabric sheets 73 and 75 as the cell forming sheets 82E and 82F, and the cell opening end side end portion has a multilayer structure.
  • the waist of cell formation sheet 82E, 82F can be strengthened by setting it as a multilayer structure. Therefore, even if the cell 86E is compressed by body pressure, the cell opening is not easily crushed, and the cell 86E is easily held in the open state.
  • the cell non-opening end side end portions of the cell forming sheets 82E and 82F also have a multilayer structure. With such a structure, the cell forming sheets 82E and 82F are likely to rise from the end of the cell non-opening end, and the cell 86E can be easily held in the open state.
  • the method of making the cell opening end side end part into a multilayer structure is not particularly limited. As shown in FIG. 10A, the end portion of the cell forming sheet 82E may be folded downward to form a multilayer structure, or the cell forming sheet 82F may be folded upward to form a multilayer structure as shown in FIG. 10B. May be. Alternatively, a separate sheet may be bonded to the cell forming sheet to form a multilayer structure.
  • FIG. 15D and FIG. 15E Cell structure of the second embodiment: In 2nd Embodiment, as shown to FIG. 15D and FIG. 15E, the junction part 384 which joins the cell formation sheet 382 and the expansion-contraction part 380 intermittently toward the direction along the side edge of a crotch envelope part is provided.
  • the formed cells 386 are partitioned and formed between the cell forming sheet 382 and the stretchable portion 380 by the joint portion 384 and extending in the intersecting direction intersecting the side edge of the crotch envelope portion.
  • the distance between the joint portions 384 of the cell forming sheet 382 is reduced following the contraction of the stretchable portion 380, and the cell connecting the inner space and the outer space of the diaper at the side edge of the crotch envelope portion 386 is formed.
  • This cell 386 improves the breathability and flexibility of the diaper.
  • a precise joining technique such as joining sheets in consideration of the position of the stretchable material as in the pant-type absorbent articles described in Patent Documents 1 to 5 is unnecessary. Therefore, it can be manufactured easily.
  • a cell is formed by contraction of a gap between one joint and another joint in the cell forming sheet or the stretchable part. Therefore, the interval between the joint portions is preferably 2 to 50 mm, and particularly preferably 5 to 10 mm, in the direction along the side edge of the crotch envelope portion.
  • the joining portion is formed in a direction orthogonal to the shrinking direction of the stretchable portion.
  • the joint portion is continuously formed in a direction orthogonal to the contraction direction of the stretchable portion.
  • Such a form can form an effective cell heading in a direction orthogonal to the contraction direction, and is excellent in touch.
  • a joint portion formed continuously in a direction orthogonal to the contraction direction of the stretchable part and intermittently formed at regular intervals with respect to the contraction direction of the stretchable part can be given.
  • FIG. 15F is a schematic plan view schematically showing an enlarged form of the joint portion 384 of the disposable diaper 301B shown in FIGS. 15A and 15B, and schematically showing a state where the cell forming sheet 382 is peeled from the disposable diaper 301B. It is a top view.
  • the joint portion 384 is composed of a plurality of linear joint portions 390 directed in the diaper trunk circumference direction (the left-right direction in the drawing). And the linear junction part 390 is intermittently formed toward the direction in alignment with the side edge (side edge 370a of the diaper main body 370) of a crotch envelope part. Further, each of the linear joint portions 390 is a form in which a plurality of dot-like joint portions 392 are formed as an aggregate arranged in a row in the circumferential direction of the diaper.
  • the linear joint portion 390 is oriented in the direction around the waist of the diaper. Therefore, compared with the case where it is oriented in the direction along the side edge of the crotch enveloping part, moisture or the like tends to flow in the front-rear direction, and the side edge of the crotch enveloping part (the side edge 370a of the diaper main body) Exhaust of moisture and the like from the side can be promoted. Moreover, it is easy to make a diaper follow the curved shape around a wearer's leg, and it is excellent also in a fitting property and a feeling of wear.
  • linear widely includes shapes extending in the circumferential direction of the diaper, and includes shapes such as strips and strips in addition to so-called linear shapes.
  • the distance between adjacent dot-like joints it is necessary that the distance between adjacent dot-like joints be 5 mm or less.
  • the joint portion 384A is composed of a plurality of linear joint portions 390A that go in the direction around the waist of the diaper. And the linear junction part 390A is intermittently formed toward the direction in alignment with the side edge (side edge 370a of a diaper main body) of a crotch envelope part. Further, the linear joint portion 390A is formed as an aggregate of circular dot-like joint portions 392A. Therefore, in addition to the effect of the form shown in FIG. 15F, there is an effect that it is difficult to cause pain even when the joint portion 384A that tends to be hard to touch touches the skin.
  • the joint portion 384B is composed of a plurality of linear joint portions 390B that go in the direction around the waist of the diaper.
  • the linear junction part 390B is intermittently formed toward the direction in alignment with the side edge (side edge 370a of a diaper main body) of a crotch envelope part.
  • each of the linear joint portions 390B includes a plurality of dot-like joint portions 392B in n rows in the diaper waist direction, and in m rows in the direction along the side edge of the crotch envelope (the side edge 370a of the diaper body). , N ⁇ m, and is formed as an aggregate arranged in a matrix.
  • n ⁇ m more dot-like joint portions 392B are arranged in the waist circumference direction in each linear joint portion 390B than in the direction along the side edge of the crotch envelope portion.
  • it forms in the shape of a line where the trunk circumference direction is longer than the direction along the side edge of the crotch enveloping part.
  • the linear joint 390B is formed as an assembly of circular dot joints 392B, and the dot joint 392B is formed as an aggregate arranged in a matrix of 2 rows and 5 columns. Has been.
  • each linear joint is a set of dot-like joints with an area of 1 to 4 mm 2 arranged in a matrix at intervals of 0.5 to 5 mm in the width direction and at intervals of 0.5 to 3 mm in the length direction.
  • the body is preferable.
  • FIG. 16A and FIG. 16B the example in which the linear joint is formed as an aggregate of dot joints has been described.
  • the joint formed intermittently in the direction along the side edge of the crotch envelope (side edge 370a of the diaper body) and continuously in the circumferential direction of the diaper.
  • the portion 384C is also preferable (linear joint portion 390C).
  • the configuration shown in FIG. 16C is also the same as the configuration shown in FIG.
  • the cell communicates the inner space and the outer space of the diaper at the side edge of the crotch envelope. Therefore, sufficient ventilation can be achieved.
  • the junction part is formed in the linear form extended in the trunk periphery direction of a diaper. Therefore, it is preferable in that exhaust of moisture and the like from the side edge of the crotch envelope (side edge 370a of the diaper body) is promoted.
  • the cell-forming sheet and the stretchable part are joined by joint parts that are intermittently formed in both the circumferential direction of the diaper and the direction along the side edge of the crotch envelope part. It is also preferable.
  • a plurality of dot-like joints may be arranged in a staggered manner.
  • the cell forming sheet bends following the contraction of the expansion / contraction part, and a cell that communicates the internal space and the external space of the diaper is formed. Therefore, the air permeability and flexibility of the side edge part of the crotch envelope part, which are the effects of the present invention, can be obtained.
  • Waist elastic material arrangement part The stretchable waist stretchable material is fixed between the layers of the nonwoven fabric sheet, and the stretchable waist stretchable material has a stretchable nonwoven fabric structure. And a waist elastic material is arrange
  • the disposable diaper 1A shown in FIGS. 1B and 1D has a structure of a stretchable nonwoven fabric (stretchable portion 80) in which a stretchable waist stretchable material 42 is fixed between the folded portion 88 of the outer sheets 63 and 66 and the pressing sheet 68.
  • the expansion / contraction part 80 is in a region near the waist edge of the front envelope part 2 or the rear envelope part 6 (in this example, the waist edge 62c of the front exterior body 62 and the waist edge 65c of the rear exterior body 65). Is formed.
  • the cell formation sheet 82 is joined to this expansion-contraction part 80 (joining part 84).
  • leg elastic material arrangement part The leg stretchable material has a stretchable nonwoven fabric structure in which the stretchable leg stretchable material is fixed between the layers of the nonwoven fabric sheet. And a leg elastic material is arrange
  • the disposable diaper 301A shown in FIG. 13B has a structure of a stretchable nonwoven fabric (stretchable portion 380) in which a stretchable leg stretchable material 340 is fixed between the side sheet 319 and the cover sheet 324. That is, the expansion / contraction part 380 is formed in a region between the fixed end (lower end) of the three-dimensional gather 326 and the side edges of the crotch envelope part 304 (in this example, the side edges 370a and 370b of the diaper main body 370). And the cell formation sheet 382 is joined to this expansion-contraction part 380 (joining part 384).
  • stretchable nonwoven fabric stretchable portion 380
  • the expansion / contraction part 380 is formed in a region between the fixed end (lower end) of the three-dimensional gather 326 and the side edges of the crotch envelope part 304 (in this example, the side edges 370a and 370b of the diaper main body 370).
  • the cell formation sheet 382 is joined to this expansion-
  • the disposable diaper 301B shown in FIG. 15B has a structure of a stretchable nonwoven fabric (stretchable portion 380) in which a stretchable leg stretchable material 340 is fixed between the side sheet 319 and the cover sheet 324. That is, the stretchable part 380 is formed in a region between the fixed end (lower end) of the three-dimensional gather 326 and the side edges of the crotch envelope part 304 (side edges 370a and 370b of the diaper main body 370). And it is the example which joined the cell formation sheet 382 intermittently to this expansion-contraction part 380 (joining part 384).
  • the joint portion 384 shown in FIG. 17C, the joint portion 384 shown in FIG. 18A, and the joint portion 384 shown in FIG. 18B have the same form.
  • the disposable diaper 1B shown in FIG. 19C has a structure of a stretchable nonwoven fabric (stretchable portion 80) in which a stretchable leg stretchable material 38 is fixed between layers of the nonwoven fabric sheets 32. That is, the stretchable portion 80 is formed in a region between the fixed end (lower end) of the three-dimensional gather 26 and the side edge of the crotch envelope portion 4 (side edge of the absorbent main body 14). And it is the example which joined the cell formation sheet 82 intermittently to this expansion-contraction part 80 (joining part 84).
  • Three-dimensional gather elastic material arrangement part has a stretchable nonwoven fabric structure in which stretched three-dimensional gather stretchable materials are fixed between layers of the nonwoven fabric sheet. And a three-dimensional gather is often formed in the direction along the side edge of a crotch envelope part. Therefore, a cell structure can be formed in a solid gather stretchable material arrangement part by intermittently joining a cell formation sheet to a solid gather stretchable material arrangement part.
  • the three-dimensional gather 26 is formed by a part of the nonwoven fabric sheet 32. Moreover, it has the structure of the stretchable nonwoven fabric (stretchable part 280) in which the stretched three-dimensional gather stretchable material 36 is fixed between the base part and the folded part of the nonwoven fabric sheet 32. That is, the expansion / contraction part 280 is formed in a region between the fixed end (lower end) of the three-dimensional gather 26 and the free end (upper end). And the cell formation sheet 282 is joined to this expansion-contraction part 280 (joining part 284).
  • stretchable nonwoven fabric stretchable part 280
  • the expansion / contraction part 280 is formed in a region between the fixed end (lower end) of the three-dimensional gather 26 and the free end (upper end).
  • the cell formation sheet 282 is joined to this expansion-contraction part 280 (joining part 284).
  • a three-dimensional gather 26 is formed by a part of the nonwoven fabric sheet 32. Moreover, it has a structure of a stretchable nonwoven fabric (stretchable portion 81) in which a stretched three-dimensional gather stretchable material 36 is fixed between the base portion and the folded portion of the nonwoven fabric sheet 32. That is, the expansion / contraction part 81 is formed in a region between the fixed end (lower end) and the free end (upper end) of the three-dimensional gather 26. And it is the example which joined the cell formation sheet 82 intermittently to this expansion-contraction part 81 (joining part 84).
  • a three-dimensional gather 327 is formed by a part of the nonwoven fabric sheet 333. Further, it has a structure of a stretchable nonwoven fabric (stretchable portion 381) in which a stretched three-dimensional gather stretchable material 337 is fixed between the nonwoven fabric sheet 333 and the nonwoven fabric sheet 334. That is, the expansion / contraction part 381 is formed in a region between the fixed end (lower end) and the free end (upper end) of the three-dimensional gather 327. And it is the example which joined the cell formation sheet 383 intermittently to this expansion-contraction part 381 (joining part 385).
  • the joint 385 shown in FIG. 18A and the joint 385 shown in FIG. 18B have the same form.
  • the cell formation sheet 383 is joined only to the solid gather 327, and the cell formation sheet is not joined to the solid gather 326 (arrangement part of the solid gather expansion-contraction material 336).
  • the cell forming sheet may be bonded to the three-dimensional gather 326 (arrangement part of the three-dimensional gather expansion / contraction material 336).
  • FIGS. 11A and 11B The disposable diaper 1A shown in FIGS. 1A to 1E can be manufactured by a process as shown in FIGS. 11A and 11B, for example.
  • FIG. 11A is a process diagram schematically showing a process of manufacturing the disposable diaper 1A shown in FIGS. 1A to 1E. For the convenience of drawing, this figure shows only the portion corresponding to the vicinity of the waist edge in the rear envelope of one pant-type diaper.
  • FIG. 11B is a schematic end view schematically showing a cut end surface obtained by cutting each step shown in FIG. 11A at the center in the width direction of the structural unit shown in FIG. 11A.
  • an outer sheet 66 to be a cell forming sheet 82 and a pressing sheet 68 to be a non-woven sheet constituting the stretchable part are prepared.
  • the inner sheet 64 is bonded to the outer sheet 66 in advance so that a part (exposed portion 78) of the outer sheet 66 is exposed. This joining is performed by a hot melt adhesive or the like.
  • the pressing sheet 68 is joined to the folded portion 88 of the outer sheet 66 to form the joined portion 84.
  • bonding is performed so that the pressing sheet 68 protrudes from the edge of the outer sheet 66.
  • the joining portion 84 is formed by heat sealing.
  • the junction part 84 is formed in the zigzag shape which continues in the trunk periphery direction (drawing left-right direction) of a diaper.
  • the waist stretchable material 42 is disposed in an expanded state on the exposed portion 78 of the outer sheet 66 and bonded.
  • an absorbent main body 14 is attached.
  • the exposed portion 78 and the pressing sheet 68 sandwiching the waist elastic material 42 are bonded on a continuous surface.
  • Adhesion of the waist stretchable material 42 is as follows: 1) A hot melt adhesive is continuously applied to the exposed portion 78 of the outer sheet 66 or the holding sheet 68 constituting the stretchable portion 80, and the waist stretchable material 42 is applied to the coated portion. 2) A method of arranging and bonding in the stretched state, 2) A method of directly applying or spraying the hot melt adhesive to the waist elastic material 42, and bonding the waist elastic material 42 in the expanded state, 3) An exposed portion 78 or a pressing sheet 68. The waist stretchable material 42 is placed in the stretched state on the upper part of the fabric, and in that state, the hot melt adhesive is sprayed to adhere the hot melt adhesive to both the exposed portion 78 or the holding sheet 68 and the waist stretchable material 42.
  • the waist stretchable material 42 is placed in an expanded state on the exposed portion 78 or the surface of the holding sheet 68, and in that state hot melt
  • the adhesive was applied to the spray to continuously depositing the hot-melt adhesive to both of the exposed portion 78 or the presser sheet 68 and the waist elastic member 42 can be carried out by a method such as bonding.
  • “Consecutively coating” in these forms includes not only forms in which the adhesive is solid-coated or sprayed on the entire surface but also forms in which the adhesive is applied in a spiral shape.
  • any form may be used as long as the joint is continuously formed in the circumferential direction of the disposable diaper.
  • the joint portion is continuously formed in the circumferential direction of the disposable diaper. Therefore, a continuous space in the front-rear direction of the disposable diaper is not formed between the exposed portion 78 and the pressing sheet 68 constituting the stretchable portion 80.
  • the cells are formed between the pressing sheet 68 and the cell forming sheet 82 (folded portion 88), and the air permeability and flexibility are improved by the cells.
  • the folded portion 88 of the outer sheet 66 and the presser sheet 68 joined to the outer sheet 66 are folded at a position corresponding to the waist edge 65c. It is superimposed on the exposed portion 78 of the outer sheet 66. Thereafter, the pressing sheet 68 is fixed with a hot melt adhesive so that a part of the absorbent main body 14 is covered with a part of the pressing sheet 68. Thereby, the elastic part 80 by which the waist elastic material 42 was inserted
  • the series of steps as described above can be continuously performed by mechanical means.
  • a method / apparatus such as continuously feeding a long sheet material from a roller, a large number of disposable diapers can be manufactured continuously.
  • the long sheet material and the long stretchable material are sent out in the left-right direction in the drawing, and the production is performed in a continuous form so that the illustrated structural unit is repeated in the left-right direction in the drawing.
  • the disposable diaper of 2nd Embodiment can be manufactured by methods, such as joining a cell formation sheet intermittently with respect to the member which comprises the skin contact surface of a crotch envelope part, for example. About another part, it can manufacture according to the manufacturing method of a general disposable diaper.
  • a general disposable diaper an example in the case of manufacturing the disposable diaper 301B shown in FIGS. 15A to 15E will be described.
  • the cell forming sheet 382 is bonded to the other side edge portion (side edge portion on the side that becomes the side sheet 319) of the nonwoven fabric sheet 332, thereby forming the bonding portion 384.
  • the joining portion 384 is formed by heat sealing. And the junction part 384 is intermittently formed toward the trunk periphery direction (drawing left-right direction) of a disposable diaper, and intermittently toward the front-back direction (drawing up-down direction) of a diaper.
  • topsheet composite A front side flap 372 and a rear side flap 374 are bonded to the other side edge portion of the nonwoven fabric sheet 332 to which the cell forming sheet 382 is intermittently bonded with a hot melt adhesive or the like.
  • the fastening tape 311 is joined to the side edge of the rear side flap 374 by heat sealing or the like. This structure will be referred to as a “top sheet composite”.
  • backsheet composite A structure in which a back sheet 320 is bonded to the center of the cover sheet 324 in the width direction and a waist stretchable material 342 is bonded to the back sheet 320 is formed by a hot melt adhesive or the like. This structure will be referred to as a “backsheet composite”.
  • the absorber 322 is encapsulated by upper and lower tissues not shown. This structure will be referred to as an “absorber complex”.
  • the upper tissue and the lower tissue may be arranged in the same manner as the absorber 22, the upper tissue 54, and the lower tissue 56 shown in FIGS. 19C and 19D, for example.
  • the absorbent body composite is disposed at the center in the width direction of the backsheet composite, and the stretched leg elastic member 340 is disposed at the side edge in the width direction of the backsheet composite. Under the present circumstances, the hot-melt-adhesive etc. for fixing the said absorber composite body and the said absorber composite body are applied.
  • the adhesion of the leg elastic material 340 is as follows: 1) A hot melt adhesive is continuously applied to the back sheet 320, the cover sheet 324, or the side sheet 319, and the leg elastic material 340 is disposed in an extended state on the applied portion. 2) A method in which a hot melt adhesive is directly applied or sprayed on the leg stretch material 340, and the leg stretch material 340 is adhered in an expanded state. 3) A leg stretch is formed on the back sheet 320 and the cover sheet 324. The material 340 is placed in an expanded state, and a hot melt adhesive is sprayed in that state, and the hot melt adhesive is adhered to both the back sheet 320, the cover sheet 324, and the leg stretchable material 340, and bonded.
  • Leg stretchable material 340 is placed in an expanded state on the surface of back sheet 320 and cover sheet 324, and the state In coating the hot-melt adhesive sprayed or continuously, the backsheet 320, both of the cover sheet 324 and the leg stretchable members 340 to adhere the hot-melt adhesive can be carried out by a method such as bonding.
  • a method such as bonding.
  • “Consecutively coating” in these forms includes not only a form in which the adhesive is solid-coated or sprayed on the entire surface of the nonwoven fabric sheet but also a form in which the adhesive is applied in a spiral shape. . Even when any one of the methods 1) to 4) is adopted, the joint portion is continuously formed in the direction along the side edge of the crotch envelope portion. Therefore, continuous cells directed toward the waist of the diaper are not formed between the back sheet 320, the cover sheet 324, and the side sheet 319 constituting the stretchable part 380. On the other hand, the cells are formed between the side sheet 319 and the cell forming sheet 382.
  • the top sheet composite is bonded to the back sheet composite in which the absorber composite and the leg stretch material 340 are arranged. Thereby, an absorber composite and the leg elastic material 340 are fixed between the layers of a top sheet composite and a back sheet composite.
  • the disposable diaper 301B can be manufactured.
  • the bonding method of 1) is performed by a method such as slit coater (shim coater), curtain spray, spiral spray, omega coat, and the bonding method of 2).
  • the bonding methods 3) and 4) can be performed by a technique such as a comb gun, an omega coat, and a shure wrap, and a technique such as an omega coat and a summit.
  • Omega Coat is used by using, for example, an omega nozzle head (ITW Dynatech), Summit is used by Summit nozzle (manufactured by Nordson), and Sure Wrap is used by using Sure Wrap nozzle (manufactured by Nordson). can do.
  • the disposable diaper of this invention is equipped with the absorber 22,322 at least like the disposable diaper 1 IB shown to FIG. 1C and FIG. 1D, and the disposable diaper 301B shown to FIG. 15B.
  • the absorbers 22 and 322 the top sheets 18 and 318, the back sheets 20 and 320, and the like are provided as constituent members.
  • Absorber is a structure made of an absorbent material. Used to absorb and retain the wearer's urine.
  • the absorbent material include fluff pulp, super absorbent polymer (hereinafter referred to as “SAP”), a hydrophilic sheet, and the like.
  • SAP super absorbent polymer
  • hydrophilic sheet As the fluff pulp, wood pulp or non-wood pulp defibrated, etc., as the SAP, sodium polyacrylate, etc., as the hydrophilic sheet, tissue, absorbent paper, and hydrophilic treatment were performed. It is preferable to use a nonwoven fabric or the like.
  • the “absorber” it is preferable to use one or two or more kinds of absorbent materials formed into a mat shape.
  • the mat may be a single layer or multiple layers. Of these, preferred is a combination of 10 to 500 parts by mass of SAP with respect to 100 parts by mass of fluff pulp.
  • the SAP may be mixed in the fluff pulp mat, or may be used in the form of a layer between a plurality of fluff pulp mats.
  • the absorbent body 22 is entirely encapsulated by an upper tissue 54 and a lower tissue 56 that are hydrophilic sheets.
  • the absorber 322 shown in FIGS. 13B and 15B also has a similar structure. That is, the entire absorbent body 322 is encapsulated by an upper tissue and a lower tissue (not shown).
  • the “absorber” may be formed into a desired shape such as a rectangular shape or an hourglass shape according to the purpose.
  • the absorber 22 shown in FIGS. 1C and 1D and the absorber 322 shown in FIG. 15B are examples using rectangular absorbers.
  • the “absorber” is usually covered with the topsheets 18 and 318 on the front surface side, like the absorber 22 shown in FIGS. 1C and 1D and the absorber 322 shown in FIG. Is covered with the backsheet 20,320. That is, the absorbers 22 and 322 are generally disposed between the top sheets 18 and 318 and the back sheets 20 and 320.
  • top sheet is a sheet disposed so as to cover the surface of the absorbent body (the surface on the side facing the wearer's skin when the diaper is worn). Since it is necessary to allow the wearer's urine or the like to pass therethrough, at least a part (all or a part) of the wearer is made of a liquid-permeable material.
  • liquid permeable material examples include woven fabric, non-woven fabric, and porous film.
  • a nonwoven fabric made of a thermoplastic resin such as polypropylene, polyethylene, polyester, aliphatic polyamide, etc., which has been subjected to a hydrophilic treatment.
  • non-woven fabric a non-woven fabric manufactured by a manufacturing method such as air through (card hot air) or card embossing can be suitably used.
  • the hydrophilic treatment can be performed by applying, spraying, impregnating, etc., a surfactant to the raw cotton of the nonwoven fabric.
  • the top sheet is “at least partly” made of a liquid permeable material.
  • the position is not particularly limited. However, it is preferable that the part which overlaps with the arrangement position of the absorber in the crotch envelopment part when viewed in plan is made of a liquid-permeable material.
  • a top sheet 318 made of a liquid-permeable material may be disposed only at the center of the diaper around the trunk.
  • a side sheet 319 made of a breathable and water-repellent material is disposed on the side edge of the diaper around the waist.
  • the breathable water repellent material it is preferable to use a non-woven sheet obtained by a method such as card embossing or spunbonding.
  • a non-woven fabric sheet such as SMS or SMMS having a high waterproof property.
  • a backsheet is a sheet
  • the back sheet is made of a liquid-impermeable material in order to prevent the wearer's urine from leaking outside the diaper.
  • the back sheet is disposed so as to cover at least the position where the absorbent body is disposed.
  • liquid-impermeable material examples include a liquid-impermeable film made of a resin such as polyethylene.
  • a microporous polyethylene film is a film in which a large number of fine pores of 0.1 to several ⁇ m are formed, and is liquid-impermeable but moisture-permeable. Therefore, it is possible to prevent the diaper internal space from being steamed while ensuring leakage prevention.
  • a cover sheet 324 is often bonded to the outer surface side of the back sheet 320.
  • the cover sheet 324 is used to reinforce the back sheet 320 and to improve the touch (feel) of the back sheet 320.
  • cover sheet examples include woven fabric and non-woven fabric. Especially, it is preferable to use the dry nonwoven fabric and wet nonwoven fabric which consist of thermoplastic resins, such as polyethylene, a polypropylene, and polyester.
  • the “three-dimensional gather” is a leak-proof wall that is arranged on the skin contact surface of the diaper and rises three-dimensionally. It is used for the purpose of preventing a lateral excretion of excrement in combination with the leg elastic material by contacting the skin of the wearer.
  • the three-dimensional gather 26 is often composed of a nonwoven fabric sheet 32 and has a structure in which a three-dimensional gather elastic material 36 in an expanded state is sandwiched and fixed between layers of the nonwoven fabric sheet 32. . With such a structure, the three-dimensional gather 26 stands up three-dimensionally due to the contraction force of the three-dimensional gather expansion / contraction material 36.
  • the three-dimensional gathers 26 are often arranged in a pair on the left and right sides of the absorber 22.
  • two or more pairs of right and left solid gathers may be arranged on both sides of the absorber.
  • a pair of three-dimensional gathers that mainly contact the wearer's crotch to prevent side leakage are arranged inside the diaper torso in the direction around the waist of the diaper, and another pair of three-dimensional gathers that mainly contact the wearer's legs and prevent side leakage (It may be referred to as “three-dimensional leg gathers”) may be adopted in which the diaper is disposed on the outer side in the torso direction.
  • the material of the nonwoven fabric sheet is not particularly limited. However, similarly to the side sheet, a nonwoven fabric sheet made of a breathable water-repellent material can be suitably used.
  • the non-woven sheet may exclusively form a three-dimensional gather, or may form a three-dimensional gather and other members of the diaper.
  • a nonwoven fabric sheet 32 that exclusively forms a three-dimensional gather is used, and this is attached to the absorbent main body 14, and the three-dimensional gather integrally with the absorbent main body 14. 26 is often configured.
  • a three-dimensional gather 326 and a side sheet 319 are often configured by a nonwoven fabric sheet 332 made of a water-repellent nonwoven fabric or the like. .
  • Absorbent body is an absorbent pad in which an absorbent body is included.
  • An absorptive main body constitutes an underpants type disposable diaper united with an exterior body mentioned below.
  • “Absorption pad” refers to a pad-like member in which an absorbent body, a top sheet, and a back sheet are integrally formed.
  • the top sheet 18 that covers the surface of the absorber 22 and the back sheet 20 that covers the back surface of the absorber 22 absorb.
  • the thing of the structure which was bonded together in the peripheral part of the body 22, and the absorber 22 was included between the layers of the top sheet 18 and the back sheet 20 can be mentioned.
  • the absorbent main body 14 shown in FIGS. 12B to 12D, 20A and 20B has the same structure as the absorbent main body 14 shown in FIGS. 1A to 1E.
  • Exterior body is a structure that encloses the wearer's torso.
  • the “exterior body” is a pants type that is formed alone or integrally with the absorbent main body and in which one waist opening and a pair of leg openings are formed.
  • the exterior body 16 shown in FIGS. 1B and 19B includes a front exterior body 62 and a rear exterior body 65 that enclose the circumference of the wearer's torso.
  • 12A and 20A includes a front enveloping portion 202, a crotch enveloping portion 204, and a rear enveloping portion 206 that are integrally configured, and the exterior body 216 alone includes one waist opening 210 and It presents a pants shape in which a pair of leg openings 212 is formed.
  • fastener members that can be engaged are attached instead of the joint portions 7 and 8 (joint portions 207 and 208), and the fastener members can be engaged with each other to form a pants type.
  • the “exterior body” is also included in a form in which the fastener members are engaged with each other in advance to form a pants shape. Examples of the fastener member include a mechanical fastener.
  • the material of the exterior body is not particularly limited. However, it is preferable that the inner space of the diaper is made of a material having excellent air permeability so as to prevent stuffiness. Examples of the material include non-woven fabric made of polyethylene, polypropylene, polyester, and other synthetic fibers.
  • the exterior body is often composed of two or more non-woven fabrics bonded together.
  • the exterior body 16 illustrated in FIGS. 1D and 19D is configured by a laminated body in which two or more nonwoven fabrics (inner sheets 61 and 64, outer sheets 63 and 66, and a pressing sheet 68) are bonded together.
  • the exterior body 216 shown in FIGS. 12D and 20C is also formed of a laminated body in which two or more nonwoven fabrics (an inner sheet 215, an outer sheet 217, and a pressing sheet 268) are bonded together.
  • various stretchable materials are fixed between the two or more nonwoven fabric layers.
  • Diaper body Tape-type disposable diapers often do not take a two-piece configuration of an absorbent main body and an exterior body.
  • a structure in which an absorbent body and various sheets covering the absorbent body are integrally formed is referred to as a “diaper body”.
  • the “diaper main body” is a member that includes an absorbent body between layers of various sheets and exhibits an absorption / holding function that is an essential function of the diaper.
  • members that do not enclose the absorbent body and do not exhibit the absorption / holding function are not constituent members of the “diaper body”.
  • the disposable diaper 301A shown in FIGS. 13A and 13B and the disposable diaper 301B shown in FIGS. 15A and 15B include an absorbent body 322, a top sheet 318, a side sheet 319, a back sheet 320, and a cover sheet 324 that cover the absorbent body 322.
  • the fastening tape 311, the front side flap 372, and the rear side flap 374 do not constitute the diaper main body 370.
  • Various elastic materials In the disposable diaper of the present invention, it is preferable to arrange elastic materials such as a waist elastic material, a leg elastic material, and a tammy elastic material. As described above, a leg stretchable material or the like can be used as a stretchable material constituting the “stretchable portion” or “stretchable nonwoven fabric” according to the present invention.
  • Waist elastic material A waist elastic material is an elastic material arrange
  • the waist elastic material is preferably disposed along the waist edge of the diaper. “Along” means being substantially parallel to the reference portion. That is, it is not necessary to be parallel in a strict sense. However, the waist elastic member 242 shown in FIGS. 12A, 12D, 12E, and 20C is arranged to be parallel to the waist edge 202c of the front envelope 202 and the waist edge 206c of the rear envelope 206. ing.
  • a plurality of linear elastic materials are often used as the waist elastic material 242 as shown in FIGS. 12A, 12D, 12E, and 20C.
  • the waist stretchable material 242 is disposed on both the front enveloping portion 202 and the rear enveloping portion 206 along the waist end edges 202c and 206c.
  • the disposable diaper 1A shown in FIGS. 1A, 1D, and 1E, and the waist stretchable material 42 of FIGS. 19A, 19D, and 19E also adopt the same configuration.
  • a sheet-like stretchable material (such as a stretchable foam) is often used as the waist stretchable material 342.
  • the waist stretchable material may be disposed on both the front encapsulation portion 302 and the rear encapsulation portion 306 along the waist edge 370c, 370d. You may arrange
  • leg elastic material is an elastic material arrange
  • leg elastic material 240 In the case of a pants-type disposable diaper, a plurality of linear elastic materials are often used as the leg elastic material 240 as shown in FIGS. 12A, 12B, 12E, and 20A. Further, in many cases, the leg stretchable material 240 is arranged in a curved manner along the outer edge of the leg opening 212 of the exterior body 216. In this embodiment, as shown in FIG. 12E, it is preferable that the leg stretchable material 240 is disposed so as not to cross the center of the crotch envelope portion 204 in the waist circumference direction. According to this embodiment, the contraction force of the leg stretchable material 240 is unlikely to act at the center of the crotch envelope portion 204 in the waist circumference direction. Therefore, twisting of the absorbent body 22 is prevented, and the absorbent body 22 is easily fitted to the wearer's inseam.
  • the leg elastic member 40 is linearly attached to the crotch envelope portion 4 of the rear exterior body 65. It is arranged.
  • the leg elastic member 40 is disposed so as to be parallel to the waist edge 65 c of the rear exterior body 65.
  • a portion of the rear exterior body 65 positioned at the crotch envelope portion 4 follows the contraction of the leg stretchable material 40 and contracts toward the side edge of the absorbent main body 14. Therefore, the said part deform
  • the disposable diaper 1A shown in FIGS. 1A, 1B, and 1E, and the disposable diaper 1B shown in FIGS. 19A, 19B, and 19E are leg stretch members 38 along both side edges of the absorbent body 22 in the absorbent main body 14. Are arranged linearly. In such a form, the leg elastic members 38 and 40 and the tammy elastic material 44 of the front exterior body 62 are integrated to improve the fit to the wearer's leg.
  • the leg elastic member 38 when the leg elastic member 38 is disposed, the both side edges of the absorbent main body 14 are likely to rise from the absorbent body 22 when the diaper is worn.
  • Such a form makes it easy for urine to collect at the central portion in the width direction of the absorbent main body 14 (that is, the portion where the absorber 22 is disposed) after urination. Therefore, it is possible to make it difficult for urine leakage to occur.
  • a plurality of linear elastic materials are often used as the leg elastic material 340.
  • a form in which a plurality of left and right pairs of linear elastic materials are linearly arranged at least in the crotch envelope portion 304 so as to follow both side edges of the absorbent body 322 is often adopted.
  • Tammy elastic material is a stretchable material that is disposed in the Tammy envelope. Tammy gathers are formed in the Tammy envelope by the Tammy elastic material. It is an elastic material that is mainly disposed in pants-type disposable diapers.
  • a plurality of linear elastic materials are often used as the tammy elastic material 244 as shown in FIGS. 12A, 12B and 12E, and FIG. 20A.
  • the Tammy stretchable material 244 is arranged linearly along the waist edge edges 202c and 206c and on both the front enveloping portion 202 and the rear enveloping portion 206.
  • the disposable diaper 1A shown in FIGS. 1A, 1B, and 1E, and the tammy stretchable material 44 of the disposable diaper 1B shown in FIGS. 19A, 19B, and 19E also adopt the same configuration.
  • Stretch material composition others: As the stretchable material, a flat rubber made of natural rubber, a thread rubber made of an elastic thread of a synthetic rubber (urethane rubber, etc.) can be suitably used. Moreover, a stretchable net, a stretchable film, a stretchable foam (such as urethane foam), or the like can also be used.
  • a stretchable material a flat rubber made of natural rubber, a thread rubber made of an elastic thread of a synthetic rubber (urethane rubber, etc.) can be suitably used.
  • a stretchable net, a stretchable film, a stretchable foam (such as urethane foam), or the like can also be used.
  • the stretch material is preferably fixed in a stretched state of 120 to 400%, and is preferably fixed in a stretched state of 200 to 300%. By setting it as this range, sufficient stretching force can be applied without applying an excessive tightening force to the wearer.
  • the stretchable material can be fixed by adhesion using an adhesive, welding by heat, ultrasonic waves, or the like.
  • the adhesive a hot-melt adhesive or other highly fluid adhesive can be used. Examples of the welding method include heat sealing.
  • the method for fixing the elastic material is not particularly limited.
  • an adhesive may be applied to or sprayed on at least one of the stretchable material and the nonwoven fabric sheet sandwiching the stretchable material, and the like.
  • Examples of the coating method include spiral coating.
  • the waist elastic material, the leg elastic material, and the tammy elastic material can be arranged by a method such as fixing them so as to be sandwiched between layers of a plurality of sheets constituting the exterior body.
  • the waist stretchable material 42 is fixed so as to be sandwiched between the pressing sheet 68 and the outer sheets 63, 66.
  • the disposable diaper 201 ⁇ / b> A shown in FIG. 12D has the waist stretchable material 242 fixed so as to be sandwiched between the pressing sheet 268 and the outer sheet 217.
  • the leg elastic member 40 and the tammy elastic material 44 are fixed so as to be sandwiched between the inner sheets 61 and 64 and the outer sheets 63 and 66. ing.
  • the leg elastic material 240 and the tammy elastic material 244 are fixed so as to be sandwiched between the inner sheet 215 and the outer sheet 217.
  • the leg stretchable material may be arranged by a method of fixing so as to be sandwiched between layers of a plurality of sheets constituting the absorbent main body.
  • the disposable diaper 1A shown in FIG. 1C and the disposable diaper 1B shown in FIG. 19C include an interlayer between the nonwoven fabric sheets 32 bonded to the absorbent main body 14 to form the three-dimensional gather 26, or the nonwoven fabric sheet 32 and the cover sheet 24.
  • Leg elastic members 38 are fixed so as to be sandwiched between the two layers.
  • both the waist elastic material and the leg elastic material can be arranged by a method such as fixing them so as to be sandwiched between layers of a plurality of sheets constituting the diaper main body.
  • the waist elastic material can be fixed so as to be sandwiched between the back sheet and the cover sheet.
  • the disposable diaper 301A shown in FIG. 13B and the disposable diaper 301B shown in FIG. 15B have the leg stretchable material 340 fixed so as to be sandwiched between the side sheet 319 constituted by the nonwoven fabric sheet 332 and the cover sheet 324. Yes.
  • the leg stretchable material may be fixed so as to be sandwiched between the top sheet and the cover sheet.
  • Fastening tape is a tape for fastening either one of the front encapsulation portion and the rear encapsulation portion to the other.
  • the left and right side edges (side edges 374a and 374b of the rear side flaps) of the rear covering portion 306 are disposed around the waist. Attached to extend outward.
  • the fastening tape preferably has a fastening member.
  • the type of fastening member is not particularly limited. However, it is preferable to use a mechanical fastener (planar fastener). Mechanical fasteners are preferable in that they have a high fastening force, and the fastening force is unlikely to be lowered even when the detachment is performed a plurality of times.
  • a hook material 348 of a mechanical fastener is attached in the vicinity of the tip of the base material 350 constituting the fastening tape 311.
  • a front patch 313 made of a loop material 346 of a mechanical fastener is often attached to the front covering portion 302.
  • the number of fastening tapes is not particularly limited. However, an appropriate number of fastening tapes may be provided in accordance with the dimensions of the wearer's body shape (specifically, the waist circumference, leg circumference, etc.). In general, a pair of disposable diapers for infants (one each on the left and right) is attached, and a pair of disposable diapers for adults (two on the left and two on the left) are attached.
  • the disposable diaper of the present invention will be described more specifically with reference to the drawings.
  • the disposable diaper of this invention includes all the disposable diapers provided with the invention specific matter, and is not limited to the following examples.
  • Example 1 As the disposable diaper of Example 1, a pants-type disposable diaper was manufactured.
  • the specific structure is the structure of the disposable diaper 1A shown in FIGS. 1A to 1E.
  • This disposable diaper 1A is of L size for infants, has a length of 485 mm in the front-rear direction, and the width of the front envelope part 2 and the rear envelope part 6 (between the side edges 2a and 2b, between the side edges 6a and 6b). Length) is 325 mm.
  • the manufacturing method was performed by the steps shown in FIGS. 11A and 11B.
  • the cell forming sheet 82 is disposed on the skin contact surface side of the stretchable portion 80, and the cell forming sheet 82 constitutes the stretchable portion 80. It is joined to the presser sheet 68 which is one non-woven fabric, and its joint 84 is formed in a zigzag shape toward the circumference of the diaper. As shown in FIG. 1B and FIG. 1D, the cell structure is formed not only on the rear envelope portion 6 side of the diaper but also on the front envelope portion 2 side.
  • the cell forming sheet 82 uses the folded portion 88 of the outer sheets 63 and 66 constituting the front exterior body 62 and the rear exterior body 65.
  • a spunbonded nonwoven fabric having a basis weight of 19 g / m 2 is used.
  • one end portion of the outer sheets 63 and 66 is folded back toward the top sheet 18 at the waist end edges 62c and 65c, thereby forming a folded portion 88.
  • the length of the folded portion 88 in the front-rear direction is 80 mm.
  • a non-woven fabric sheet separate from the inner sheets 61 and 64 and the outer sheets 63 and 66 is disposed.
  • a spunbond nonwoven fabric of the same type as the cell forming sheet 82 that is, a water-repellent nonwoven fabric having a basis weight of 19 g / m 2 is used.
  • the front end of the pressing sheet 68 is configured to protrude from the front end of the folded portion 88.
  • the part of the absorptive main body 14 is coat
  • the protruding portion is configured to protrude by 40 mm from the end portion of the cell forming sheet 82 and is configured to cover a 25 mm portion from the end portion of the absorbent main body 14.
  • the presser sheet 68 has a length of 80 mm (dimension in the longitudinal direction of the diaper), and a folded portion 88 is joined to the presser sheet 68.
  • the joint portion 84 is formed so that the opening width of the opening end of the cell 86 is 8.5 mm and the depth of the cell is 38 mm, and this structure has a total of 76 outward cells and inward cells in the circumferential direction of the diaper. The structure was formed.
  • the expansion / contraction part 80 extends the waist expansion / contraction material 42 between the pressing sheet 68 and the outer sheets 63, 66 along the waist end edges 62c, 65c at a stretch rate of 300% (3% of the original length). 6) in an expanded state.
  • a flat rubber made of natural rubber was used as the elastic waist member 42.
  • Example 2 As the disposable diaper of Example 2, a pants-type disposable diaper was manufactured.
  • the specific structure is the structure of the disposable diaper 201A shown in FIGS. 12A to 12E.
  • This disposable diaper 201A has a length in the front-rear direction of 520 mm and a width of the rear envelope 6 (the length between the side edges 6a and 6b) of 380 mm.
  • the absorbent main body 14 having the same structure as the disposable diaper of Example 1 was used.
  • the longitudinal length of the absorbent main body 14 was 420 mm.
  • the three-dimensional gather stretchable material 36 and the leg stretchable material 38 were fixed only to a portion having a length of 260 mm in the front-rear direction of the crotch envelope portion 204.
  • the exterior body 216 is not the front / rear separation type like the disposable diaper of Example 1, but an integrated type in which the front enveloping part, the crotch enveloping part, and the rear enveloping part are integrally formed.
  • the width of the narrowest part (position of the A-A ′ end face) of the crotch envelope was 175 mm.
  • the leg stretchable material 240 disposed on the exterior body 216 is arranged in a curved manner along the outer edge of the leg opening 212 of the exterior body 216.
  • the cell forming sheet 282 is arranged on the skin contact surface side of the stretchable portion 280, and the cell forming sheet 282 is a nonwoven fabric sheet 32 that is one nonwoven fabric constituting the stretchable portion 280.
  • the joint portion 284 is formed in a zigzag shape in a direction along the side edge of the crotch envelope portion.
  • a non-woven fabric sheet separate from the non-woven fabric sheet 32 constituting the three-dimensional gather 26 is used as the cell forming sheet 282.
  • a water-repellent SMS nonwoven fabric sheet having a basis weight of 15 g / m 2 is used.
  • the cell forming sheet had a width (dimension in the diaper circumference direction) of 17 mm and a length (diaper longitudinal dimension) of 420 mm. And it joined so that the front-and-rear end of a cell formation sheet might align with the front-and-rear end of an absorptive main body.
  • the joint portion 284 is formed so that the opening width of the opening end of the cell is 6.5 mm and the depth of the cell is 15 mm, and this structure is along the side edge of the crotch envelope portion 204. A total of 80 inward cells and outward cells are formed.
  • the stretchable portion 280 is formed by extending the three-dimensional gather stretchable material 36 along the upper end of the three-dimensional gather 26 between the base portion and the folded portion of the nonwoven fabric sheet 32 at a stretch rate of 300% (three times the original length). 3 are arranged in the extended state.
  • a flat rubber thinness 0.35 mm ⁇ width 0.65 mm made of natural rubber was used.
  • Example 3 As Example 3, a tape-type disposable diaper 301A shown in FIGS. 13A to 13D was produced.
  • This tape-type disposable diaper 301A is an L size for infants, and the diaper body 370 has a rectangular shape with a longitudinal length of 485 mm and a width of 230 mm.
  • Thread rubber was placed as a leg stretch material 340 on the side edge of the diaper main body 370.
  • the three leg elastic members 340 were arranged on the left and right sides at a pitch of 7 mm. It arrange
  • FIG. The leg stretchable material 340 was fixed between the side sheet 319 and the cover sheet 324 in a stretched state of 300% to constitute the stretchable portion 380.
  • a cell forming sheet 382 was bonded to the skin contact surface of the side sheet 319.
  • the width of the cell forming sheet 382 was 26 mm.
  • the joint part 384 was formed in a zigzag shape in a direction along the side edges of the crotch envelope part 304 (side edges 370a and 370b of the diaper main body 370).
  • the width of the joint portion 384 was 0.4 mm.
  • the cell forming sheet 382 is made of a spunbond nonwoven fabric, and a polypropylene nonwoven fabric sheet having a basis weight of 18 g / m 2 was used.
  • the cell forming sheet 382 was bonded to the skin contact surface of the side sheet 319 with an ultrasonic seal.
  • the joint portion 384 is formed so that the opening width of the opening end portion of the cell is 6 mm and the depth of the cell is 25 mm, and this structure has 80 pieces in the direction along the side edge of the crotch envelope portion 204 (outward cell 40). And 40 inward cells).
  • a stretchable nonwoven fabric 396 was intermittently joined to the skin contact surface in the vicinity of the waist edge 370c, 370d of the diaper main body 370 toward the waist of the diaper.
  • a water-repellent SMS nonwoven fabric sheet having a basis weight of 15 g / m 2 was used.
  • ten thread rubbers as an elastic material 399 were arranged at a pitch of 5 mm and fixed in a stretched state of 300%.
  • the stretchable nonwoven fabric 396 was joined to the skin contact surface in the vicinity of the waist edge 370c, 370d of the diaper main body 370 with an ultrasonic seal (joint portion 386). That is, the part (waist covering part) vicinity of the waist edge 370c, 370d of the diaper main body 370 was utilized as a cell formation sheet.
  • the joint portion 385 is formed so that the opening width of the opening end of the cell is 8.5 mm and the depth of the cell is 30 mm, and this structure has 36 pieces (18 outward cells) in the direction along the circumference of the diaper. , 18 inward cells).
  • Example 4 As Example 4, a tape-type disposable diaper 301C shown in FIGS. 17A to 17C was produced.
  • This disposable diaper 301C is of L size for babies, and the diaper main body 370 has a rectangular shape with a longitudinal length of 485 mm and a width of 230 mm.
  • Thread rubber with a thickness of 620 dtex was disposed as a leg stretch material 340 on the side edge of the diaper main body 370.
  • Three leg elastic members 340 were arranged on the left and right sides at a pitch of 5 mm. It arrange
  • the leg stretchable material 340 was fixed in a stretched state of 250% between the side sheet 319 and the back sheet 320 and between the side sheet 319 and the cover sheet 324 to form the stretchable portion 380.
  • a nonwoven fabric sheet 333 (cell-forming sheet 382) is intermittently joined to the skin contact surface of the side sheet 319 in a direction along the side edges of the crotch envelope portion 304 (side edges 370a and 370b of the diaper main body 370).
  • the cell forming sheet 382 is made of a spunbond nonwoven fabric, and a polypropylene nonwoven fabric sheet having a basis weight of 18 g / m 2 was used. The cell forming sheet 382 was bonded to the skin contact surface of the side sheet 319 with an ultrasonic seal.
  • the joint portion 384 is formed by collectively forming a plurality of rectangular joint portions having a width of 0.4 mm and a length of 10 mm, and the rectangular joint portions are formed on the side edges of the crotch envelope portion 304. They were arranged at intervals of 7 mm along the direction along the circumference of the diaper and at intervals of 1 mm along the circumference of the diaper.
  • a three-dimensional gather 327 was formed by a part of the nonwoven fabric sheet 333.
  • the length from the fixed end (lower end) to the free end (upper end) of the three-dimensional gather 327 was 30 mm.
  • the three-dimensional gather 327 was provided with a rubber thread as the three-dimensional gather elastic material 337.
  • the three-dimensional gather expansion / contraction material 337 was arranged on the left and right four by 5 mm pitch. It arrange
  • FIG. A three-dimensional gather stretchable material 337 was fixed between the base portion 379 of the nonwoven fabric sheet 334 and the nonwoven fabric sheet 333 in a stretched state of 300% to constitute a stretchable portion 381.
  • a nonwoven fabric sheet 334 (cell-forming sheet 383) is applied to the skin contact surface 20 mm from the free end of the three-dimensional gather 327 in a direction along the side edges of the crotch envelope portion 304 (side edges 370a and 370b of the diaper main body 370). It joined intermittently toward.
  • the cell forming sheet 383 was joined to the skin contact surface of the nonwoven fabric sheet 333 with an ultrasonic seal.
  • the joint portion 385 was formed in the same form as a rectangular joint portion having the same shape as the joint portion 384.
  • a water-repellent SMS nonwoven fabric sheet having a basis weight of 15 g / m 2 was used as the nonwoven fabric sheets 333 and 334.
  • the disposable diaper of the present invention can be used as a disposable diaper for infants or adults such as the elderly or disabled persons who need care, more specifically as a pants-type disposable diaper or a tape-type disposable diaper.

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)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

Cette invention concerne une couche jetable (1A) conçue pour que des sections étirables (80) comprenant un textile non tissé étirable se forment au niveau d'une certaine portion, par exemple le rabat arrière protégeant la taille de l'utilisateur. Le textile non tissé étirable est obtenu en fixant une matière étirable à une feuille de textile non tissé, et de manière à ce que la première et la seconde soient complètement mobiles. Les sections étirables (80) sont conçues de manière à s'étirer et à se contracter dans le sens de la taille et dans d'autres sens. Des feuilles alvéolaires (82) comprenant le textile non tissé sont chacune disposées dans une partie de la surface en contact avec la peau sur la portion où la section étirable (80) est formée. Des sections communes (84) permettent de joindre de manière intermittente les feuilles alvéolaires (82) et les sections étirables (80) dans le sens d'étirement et de contraction des sections étirables (80). Les alvéoles (86) sont définies et formées entre les couches des feuilles alvéolaires (82) et les sections étirables (80) par les portions communes (84), les alvéoles (86) se prolongeant dans le sens du croisement des alvéoles (86) et dans le sens d'étirement et de contraction des sections étirables (80).
PCT/JP2012/057736 2011-03-31 2012-03-26 Couche jetable WO2012133294A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
RU2013148547/12A RU2582955C2 (ru) 2011-03-31 2012-03-26 Подгузник одноразового использования
MYPI2013003518A MY177014A (en) 2011-03-31 2012-03-26 Disposable diaper
KR1020137028799A KR101851038B1 (ko) 2011-03-31 2012-03-26 일회용 기저귀
CN201280021199.5A CN103619299B (zh) 2011-03-31 2012-03-26 一次性尿布

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2011077350A JP5938848B2 (ja) 2011-03-31 2011-03-31 使い捨ておむつの製造方法
JP2011-077350 2011-03-31
JP2011133718A JP5811615B2 (ja) 2011-06-15 2011-06-15 使い捨ておむつ
JP2011-133718 2011-06-15

Publications (1)

Publication Number Publication Date
WO2012133294A1 true WO2012133294A1 (fr) 2012-10-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/057736 WO2012133294A1 (fr) 2011-03-31 2012-03-26 Couche jetable

Country Status (5)

Country Link
KR (1) KR101851038B1 (fr)
CN (1) CN103619299B (fr)
MY (1) MY177014A (fr)
RU (1) RU2582955C2 (fr)
WO (1) WO2012133294A1 (fr)

Cited By (1)

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CN105105927A (zh) * 2015-07-23 2015-12-02 杭州可靠护理用品股份有限公司 一种成人用一次性纸尿裤

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Publication number Priority date Publication date Assignee Title
JP5797295B1 (ja) * 2014-04-14 2015-10-21 ユニ・チャーム株式会社 使い捨ておむつ
JP5896187B1 (ja) * 2014-08-20 2016-03-30 王子ホールディングス株式会社 使い捨ておむつ及びクッションシート
TWI578973B (zh) * 2015-09-04 2017-04-21 Oji Holdings Corp Absorbent items
JP6404297B2 (ja) * 2016-10-21 2018-10-10 大王製紙株式会社 パンツタイプ使い捨ておむつ
WO2018092309A1 (fr) * 2016-11-21 2018-05-24 花王株式会社 Couche jetable
CN109982667A (zh) * 2016-11-23 2019-07-05 易希提卫生与保健公司 性别特定化的吸收性物品系列
JP6327324B1 (ja) * 2016-11-24 2018-05-23 王子ホールディングス株式会社 吸収性物品
JP6382399B1 (ja) * 2017-06-16 2018-08-29 大王製紙株式会社 パンツタイプ使い捨ておむつ

Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2000189454A (ja) * 1998-12-28 2000-07-11 Uni Charm Corp 使い捨ておむつ
WO2008066006A1 (fr) * 2006-11-27 2008-06-05 Uni-Charm Corporation Article absorbant
JP2009082482A (ja) * 2007-09-28 2009-04-23 Daio Paper Corp 使い捨ておむつ
JP2010035865A (ja) * 2008-08-06 2010-02-18 Oji Nepia Co Ltd 吸収性物品

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2000189454A (ja) * 1998-12-28 2000-07-11 Uni Charm Corp 使い捨ておむつ
WO2008066006A1 (fr) * 2006-11-27 2008-06-05 Uni-Charm Corporation Article absorbant
JP2009082482A (ja) * 2007-09-28 2009-04-23 Daio Paper Corp 使い捨ておむつ
JP2010035865A (ja) * 2008-08-06 2010-02-18 Oji Nepia Co Ltd 吸収性物品

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105105927A (zh) * 2015-07-23 2015-12-02 杭州可靠护理用品股份有限公司 一种成人用一次性纸尿裤
CN105105927B (zh) * 2015-07-23 2018-04-13 杭州可靠护理用品股份有限公司 一种成人用一次性纸尿裤

Also Published As

Publication number Publication date
KR20140023334A (ko) 2014-02-26
MY177014A (en) 2020-09-01
RU2013148547A (ru) 2015-05-10
RU2582955C2 (ru) 2016-04-27
CN103619299B (zh) 2016-09-28
CN103619299A (zh) 2014-03-05
KR101851038B1 (ko) 2018-04-20

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