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 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 specially adapted to be worn around the waist, e.g. diapers, nappies
  • A61F13/495—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 specially adapted to be worn around the waist, e.g. diapers, nappies with faecal cavity
• • 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
  • A61F13/15577—Apparatus or processes for manufacturing
  • A61F13/15699—Forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or without additional treatment of the webs
• • 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
  • A61F13/15577—Apparatus or processes for manufacturing
  • A61F13/15804—Plant, e.g. involving several steps
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
  • Y10T156/10—Methods of surface bonding and/or assembly therefor
  • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
  • Y10T156/10—Methods of surface bonding and/or assembly therefor
  • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
  • Y10T156/1084—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing of continuous or running length bonded web
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
  • Y10T156/10—Methods of surface bonding and/or assembly therefor
  • Y10T156/1089—Methods of surface bonding and/or assembly therefor of discrete laminae to single face of additional lamina
  • Y10T156/1092—All laminae planar and face to face
  • Y10T156/1093—All laminae planar and face to face with covering of discrete laminae with additional lamina
  • Y10T156/1095—Opposed laminae are running length webs

Definitions

• the present invention relates to a disposable diaper, and more particularly, to a method for continuously producing a disposable diaper having a toilet pocket.
• a disposable diaper having a toilet pocket is well known.
• a disposable diaper disclosed in Japanese Patent Application Laid-Open No. 2002-315778 (Patent Document 1) is an example of a disposable diaper having a toilet bowl, and the first core material having a bodily fluid absorption property is liquid-permeable.
• a large panel formed by sandwiching the sheet and the liquid-impervious sheet is formed so as to extend to the front and rear waist region and the crotch region, and the large panel is formed with a recess for a toilet bowl.
• This diaper also has a body fluid-absorbing second core material wrapped in a liquid-permeable sheet, and a small panel that overlaps a large panel on the inner side of the diaper has a front waist region and a part of the crotch region. It is formed to spread.
• This small panel covers part of the recess for the toilet bowl formed in the large panel in the crotch region, and a pocket is formed between the large panel and the small panel to open toward the rear waist area. Is formed. Back waist area Force The stool flowing toward the inseam area can flow into this pocket, which acts as a toilet bowl.
• Patent Document 1 JP 2002-315778 A
• the dimension up to the panel with small bottom surface force of the recess and the dimension in the width direction of the recess are the opening dimensions of the pocket.
• the pocket In order for the pocket to be wide open, it is necessary to increase the size of the opening. For this reason, when the concave portion is deepened, the large panel becomes thicker, and the diaper has a large crotch area.
• the small panel absorbs bodily fluids and the core of the small panel swells or the rigidity of the core decreases, the small panel reduces the size of the opening of the pocket so as to reduce the opening size of the pocket. And it may make it difficult for stool to flow into the pocket.
• An object of the present invention is a method for continuously manufacturing a disposable diaper in which a pocket for a toilet bowl is formed by overlapping two panels as disclosed in Patent Document 1,
• An object of the present invention is to provide an improved manufacturing method in which two panels are separated from each other so that a pocket can be greatly opened.
• the present invention for solving the above-mentioned problems includes a first invention, a second invention, and a third invention.
• the object of the first, second and third inventions is a front waist region, a rear waist region, and a crotch region located between these two regions, which are orthogonal to each other in the vertical and horizontal directions.
• Liquid-impermeable sheet having a first inner surface and a first outer surface opposite to the first inner surface, and a second outer surface facing the first inner surface and a second outer surface facing the first inner surface.
• a panel-shaped first body fluid absorbing portion having a second inner surface which is an opposite surface and extending in at least the rear waist region and the crotch region of the front and rear waist region and the crotch region in the longitudinal direction. And a third outer surface facing at least a part of the second inner surface and a third inner surface opposite to the third inner surface, and extend in the longitudinal direction to the front waist region and the crotch region and to the rear waist region.
• the crotch region overlaps with the second inner surface of the first bodily fluid absorption part without spreading.
• a panel-shaped second body fluid absorbing portion is formed, and in the crotch region, the second body fluid absorbing portion is provided at each of the laterally located edges at the liquid impermeable sheet and the first body fluid.
• a disposable diaper in which a portion between the two edge portions is formed so as to be able to be separated from the first body fluid absorbing portion while a portion between the both edge portions is separated from the first body fluid absorbing portion while the absorbing portion is bonded to the misalignment.
• a method for continuously producing the disposable diaper characterized in that a means for separating the second body fluid absorbing part from the first body fluid absorbing part through a step is formed.
• the first invention is characterized by including the following steps.
• the first nonwoven fabric has an inner surface and an outer surface, and a body fluid-absorbing first core material is intermittently arranged in the first machine direction on the inner surface.
• the first liquid-permeable sheet is continuously supplied in the first machine direction, and the first core material is sandwiched between the first liquid-permeable sheet and the first nonwoven fabric to form a plurality of the first liquid-permeable sheets.
• the second liquid-permeable sheet is continuously supplied in the second machine direction, and the second core material is sandwiched between the second liquid-permeable sheet and the second nonwoven fabric to form a plurality of the second liquid-permeable sheets.
• the first continuum and the second continuum are connected to the first liquid-permeable sheet and the third continuum in a third machine direction that is an extension of the first machine direction and the second machine direction.
• the second nonwoven fabric and the second nonwoven fabric are merged so as to face each other, the positions of the first core material and the second core material in the third machine direction are matched, and the second core material is aligned in a direction crossing the third machine direction.
• the third continuum is divided in the third machine direction by a cutting line extending in the cross direction, and a pair of the first core material and the second core material, each of which is adjacent to each other, is provided one by one. Forming a plurality of first composites in which a first edge and a second edge parallel to each other are defined by the cutting line.
• a first liquid-impervious sheet having an inner surface and an outer surface is continuously supplied in a fourth machine direction, and the first nonwoven fabric and the second nonwoven fabric are each one of the first composites.
• the first composite sheet is placed on the first liquid-impermeable sheet so as to face the inner surface of the first liquid-impermeable sheet, and the peripheral portion of the first composite is joined to the first liquid-impermeable sheet to form a fourth continuous sheet.
• the fourth continuum has a first side edge and a second side edge extending in parallel with each other, and the second side edge can be elastically extended and contracted in a direction in which the second side edge extends.
• Material The first side edge of each of the pair of leak-preventing cuff continuum bodies is attached to the fourth continuum body under the stretched state of the second side edge section of the first composite body. Joining process near the edge and the second edge
• the cuff continuum joined near the first edge and the cuff continuum joined near the second edge are oriented such that the second side edges are aligned with each other. End of the first composite, which is overlapped on the first liquid-permeable sheet and the second liquid-permeable sheet, and extends so as to intersect each of the first edge and the second edge. Step of joining near each edge
• step (13) After the step (13), a step of dividing the fourth continuous body between the first composites adjacent to each other to sequentially form any one of the individual diapers and the diaper precursors
• the first non-woven fabric, the first liquid-permeable sheet, and the first core material on which these are sandwiched form the first body fluid absorbing portion
• the non-woven cloth, the second liquid-permeable sheet, and the second core material sandwiched therebetween form a second body fluid absorbing portion.
• a pair of leak-preventing cuffs is formed from the pair of continuous cuffs.
• the absorption section is lifted so as to be separated from the first body fluid absorption section, and functions as a toilet reservoir pocket with a large opening between the first body fluid absorption section and the second body fluid absorption section.
• the manufacturing method according to the first invention by joining the force continuity body to the second liquid-permeable sheet in this manner, the leak-preventing cuff is separated from the first and second body fluid absorbing portions by the second. It can be a means of 1.
• the first liquid-impervious sheet comprises a liquid-impermeable plastic film and a nonwoven fabric laminated on at least one of the inner and outer surfaces of the film. Consists of In a diaper manufactured in a strong mode, the feel when wearing the diaper becomes cloth-like.
• the band-shaped material is a nonwoven fabric. It is formed of a cloth and thread rubber attached to the nonwoven fabric in an extended state. According to the manufacturing method of this aspect, a leak-proof cuff that elastically expands and contracts can be easily produced.
• the first machine direction and the second machine direction coincide with a lateral direction of the liquid impermeable sheet
• the machine direction coincides with the longitudinal direction of the liquid-impermeable sheet
• the first composite is rotated by 90 ° and then placed on the first liquid-impermeable sheet.
• a part of a portion of the second continuum superimposed on the first continuum in the step (7) is folded back along a folding curve parallel to the second machine direction so that the second liquid-permeable sheets overlap each other, and the second nonwoven fabric in the second continuum is aligned with the cuff continuum.
• a part of the second side edge of the continuous cuff is bonded to the second nonwoven fabric instead of the second liquid-permeable sheet.
• the continuous cuff can be joined to the second nonwoven fabric of the second liquid-permeable sheet and the second nonwoven fabric by sandwiching the second core material.
• the first machine direction and the second machine direction coincide with a longitudinal direction of the liquid-impermeable sheet
• the first composite is rotated by 90 ° and placed on the first liquid-impermeable sheet.
• the first machine direction coincides with the longitudinal direction of the liquid-impermeable sheet
• the second machine direction is the impermeable sheet.
• the first body fluid absorbing portion obtained by dividing the first continuum and the second body fluid absorbing portion obtained by dividing the second continuum are aligned with each other in the lateral direction of the liquid sheet.
• the diaper is positioned laterally with respect to the second nonwoven fabric. It becomes easy to continuously supply and attach the elastic member extending in the direction.
• the width of the diaper in the crotch region between the first continuous body and the second continuous body is shifted.
• a spacer continuum made of a band-shaped elastic material capable of separating the first humor absorbing portion and the second humor absorbing portion by stretching is attached in an extended state.
• the method includes the step of forming the separating means described in 2 above.
• a spacer continuous body acting to reduce the width of the diaper may be used. Installation becomes possible.
• a feature of the second invention according to claim 9, which is one of the continuous manufacturing methods, is that the method includes the following steps.
• the first nonwoven fabric has an inner surface and an outer surface, and a body fluid-absorbing first core material is intermittently arranged in the first machine direction on the inner surface.
• the first liquid-permeable sheet is continuously supplied in the first machine direction, and the first core material is sandwiched between the first liquid-permeable sheet and the first nonwoven fabric to form a plurality of the first liquid-permeable sheets.
• the second liquid-permeable sheet is continuously supplied in the second machine direction, and the second core material is sandwiched between the second liquid-permeable sheet and the second nonwoven fabric to form a plurality of the second liquid-permeable sheets.
• a spacer continuous body made of a band-shaped elastic material is supplied in an extended state in either the first machine direction or the second machine direction, and the first core material and the first core material in the first continuous body are supplied.
• Either the first liquid-permeable sheet in the first continuum or the second nonwoven fabric in the second continuum over any of the second cores in the second continuum Forming a second means for separating by bonding to them
• the first continuum and the second continuum are connected to the first liquid-permeable sheet and the third continuum in a third machine direction which is an extension of the first machine direction and the second machine direction.
• the second nonwoven fabric and the second nonwoven fabric are merged so as to face each other, the positions of the first core material and the second core material in the third machine direction are matched, and the second core material is aligned in a direction crossing the third machine direction.
• the third continuum is sequentially divided by a cutting line extending in the cross direction, and the third continuum is separated by a pair of the cutting lines that include the first core material and the second core material one by one and are adjacent to each other. Forming a plurality of first composites in which first and second edges parallel to each other are defined
• a first liquid-impervious sheet having an inner surface and an outer surface is continuously supplied in a fourth machine direction, and the first nonwoven fabric and the second nonwoven fabric are each one of the first composites.
• a fourth continuous body is formed by placing the first composite on the first liquid-impermeable sheet so as to face the inner surface of the first liquid-impermeable sheet and joining a peripheral portion of the first composite to the liquid-impermeable sheet.
• the spacer continuum having the band-like elastic material force is stretched in a stretched state so as to straddle the first core material and the second core material, and the first continuum and the second continuity material.
• the first liquid-impervious sheet is a liquid-impermeable plastic film and a nonwoven fabric laminated on at least one of the inner and outer surfaces of the film. Consists of In a diaper manufactured in a strong mode, the feel when wearing the diaper becomes cloth-like.
• the first machine direction and the second machine direction coincide with a lateral direction of the liquid-impermeable sheet, and The machine direction is coincident with the longitudinal direction of the liquid-impermeable sheet, and the first composite is rotated by 90 ° and then placed on the first liquid-impermeable sheet.
• the manufacturing method of this aspect since the lateral direction of the diaper matches the first machine direction and the second mechanical direction, it is easy to attach the elastic member extending continuously in the transverse direction to the diaper. Become.
• the first machine direction and the second machine direction coincide with the longitudinal direction of the liquid impermeable sheet.
• the first nonwoven fabric and the second nonwoven fabric are supplied side by side in the diaper manufacturing line. It is possible to reduce the space in the width direction in the production line.
• the first machine direction corresponds to a longitudinal direction of the liquid-impermeable sheet
• the second machine direction corresponds to the liquid-impermeable sheet.
• the first body fluid absorbing portion obtained by dividing the first continuum and the second body fluid absorbing portion obtained by dividing the second continuum. This includes the step of rotating the body 90 °. According to the manufacturing method of this aspect, it is easy to continuously supply and attach the elastic member extending in the lateral direction of the diaper to the second nonwoven fabric.
• the fourth continuum has a first side edge and a second side edge extending parallel to each other.
• the first side edge of each of the pair of leak-preventing cuff continuum members, each of which is made of a band-shaped material that can elastically expand and contract in the direction in which the second side edge extends, is placed in the extended state of the second side edge.
• a step of joining near the first edge and the second edge of the first composite attached to the fourth continuum is included.
• the cuff continuum can be attached to the fourth continuum running in the fourth machine direction while being supplied linearly in the fourth machine direction.
• the second core material is sandwiched between the second liquid-permeable sheet and the second nonwoven fabric.
• the leak prevention cuff is used as a means for separating the first and second body fluid absorbing portions of the diaper from each other! ]can do.
• a feature of the third invention according to claim 16, which is one of the continuous production methods, is that the method includes the following steps.
• At least a portion of the liquid-impermeable sheet that is to be the front waist region, the rear waist region, and the crotch region of the liquid-impermeable sheet is a region that should be the rear waist region and the crotch region. Attaching the first body fluid absorbing portion to the first inner surface in
• the second body fluid absorbing portion is provided at a portion of the liquid impermeable sheet that is to be the front waist region and the crotch region of the liquid impermeable sheet, and the second outer surface is the first body fluid at the crotch region.
• the first body surface of the second body fluid absorbing portion is positioned in the lateral direction by placing the edge portion of the second body fluid absorbing portion in the crotch region, facing the first inner surface of the absorbing portion. Joining the edge of the body fluid absorbing portion and the continuum positioned outside the edge of the first body fluid absorbing portion in the lateral direction to any one of them
• the part force to be the crotch region should be the front waist region and the rear waist region.
• a pair of leak-proof cuffs formed of a band-shaped material having an inner edge and an outer edge which extend symmetrically in the direction in which they extend, and which can be sexually extended and contracted in the direction in which they extend.
• a step of joining a part of the inner edge of the leak-proof cuff member to a part of the second body fluid absorbing part, and a band-shaped elastic member in the diaper manufacturing process, a step of joining a part of the inner edge of the leak-proof cuff member to a part of the second body fluid absorbing part, and a band-shaped elastic member.
• the second body fluid absorbing section is separated from the first body fluid absorbing section by adopting at least one of the steps of attaching the spacer to at least one edge of the first body fluid absorbing section and the second body fluid absorbing section.
• the formation of the first and Z or second means is enabled.
• FIG. 1 is a perspective view of a diaper.
• FIG. 2 is a sectional view taken along the line II-II of FIG. 1.
• FIG. 3 is a cross-sectional view taken along the line ⁇ — ⁇ of FIG.
• FIG. 4 is an exploded perspective view of a diaper.
• FIG. 5 is a view showing a diaper manufacturing process.
• FIG. 6 is a partial view of a manufacturing process showing an example of the embodiment.
• FIG. 7 is a partial view of a manufacturing process showing another example of the embodiment.
• FIG. 8 is a partial view of a manufacturing process showing still another example of the embodiment.
• FIG. 9 is a partial view of a manufacturing process showing still another example of the embodiment.
• FIG. 10 is a perspective view of a diaper in a mode different from that of FIG. 1.
• FIG. 11 is a sectional view taken along line XI—XI in FIG.
• FIG. 1 is a perspective view of a disposable diaper 1 obtained by the manufacturing method according to the present invention.
• the diaper 1 has an inner surface la facing the skin of the diaper wearer and an outer surface 1b which is the opposite surface, and the vertical direction, the horizontal direction, and the thickness direction orthogonal to each other are indicated by double-headed arrows A, B, C. It is shown.
• the vertical direction A is also the front-back direction of the diaper 1
• the horizontal direction B is also the width direction of the diaper 1.
• the panel-shaped portion 2 having a rectangular shape elongated in the longitudinal direction A is composed of a front waist region 3, a rear waist region 4, and a crotch region 5 interposed between these two regions 3, 4.
• the panel-shaped part 2 also has a liquid-impervious backing sheet 10, and a first panel 11 and a second panel 12 that absorb body fluid are provided on the inner surface side of the backing sheet 10.
• the panels 11, 12 are partially covered by leak-proof cuffs 13 extending longitudinally along each of the edges 6 of the panel-shaped part 2.
• the leak-proof cuff 13 has a front edge 16, a rear edge 17, an inner edge 18, and an outer edge 19, and the front and rear edges 16, 17 and the outer edge 19 are lined with a backing sheet.
• An elastic member 21 is attached to the inner edge 18 in an extended state.
• a waist elastic member 20 extending in the lateral direction B is attached to the rear waist region 4 in an extended state, and a leg elastic member 27 is attached near the edge 6 in an extended state.
• the illustrated panel-shaped portion 2 is curved in the longitudinal direction A such that the elastic members 20, 21, and 27 are in a contracted state, and the outer surface lb of the diaper 1 is convex.
• the front waist region 3 of the strong panel-like portion 2 has a pair of front wings 23 extending in the lateral direction B
• the rear waist region 4 has a pair of rear wings 24 extending in the lateral direction B.
• the inner surface of the rear wing portion 24 has a fastener 26 that can be detachably fixed to a required portion of the outer surface of the front waist region 3 or the outer surface of the front wing portion 23.
• FIG. 2 is a sectional view taken along the line II-II of FIG. 1, in which the diaper 1 is in a state of being curved in the longitudinal direction A.
• the backing sheet 10 is formed by laminating an inner sheet 10a that is also a liquid-impervious plastic film and an outer sheet 10b that is also a non-woven fabric. Between the two sheets 10a and 10b and joined to at least one of the sheets.
• the first panel 11 extends to at least the rear waist region 3 and the inseam region 5 of the front and rear waist regions 3 and 4 and the inseam region 5 in the panel-shaped portion 2.
• the first panel 11 in the illustrated example has a front portion 38 located closer to the front waist region 3 and a rear portion 39 located closer to the rear waist region 4.
• the strong first panel 11 includes a first outer sheet 31 made of a nonwoven fabric, preferably a liquid-impermeable nonwoven fabric, a first inner sheet 32 made of a liquid-permeable nonwoven fabric, and interposed between these two sheets 31, 32. It is formed of the first core material 33 that absorbs body fluid.
• the first core material 33 is an aggregate of bodily fluid-absorbing materials such as pulverized pulp and superabsorbent polymer particles, and is preferably at least one of the surfaces in contact with the first outer sheet 31 and the first inner sheet 32.
• the surface in contact with the first inner sheet 32 is covered with a liquid-permeable and body-diffusion first diffusible sheet 34 made of tissue paper or the like.
• the first core material 33 in the illustrated example is divided into a front portion 33a and a rear portion 33b, and a first inner sheet 32 and a first diffusible sheet 34 are provided between these two portions 33a and 33b.
• the concave portion 36 is formed in the first panel 11 by being curved and overlapping the first outer sheet 31. This recess 36 is shown in FIG. 1 by a dashed line 37 which is substantially T-shaped.
• the second panel 12 of the panel-like portion 2 includes a second outer sheet 41 made of a nonwoven fabric, preferably a liquid-permeable nonwoven fabric, a second inner sheet 42 also made of a liquid-permeable nonwoven fabric, and these two sheets 41 , 42 and a second core material 43 having a body fluid absorbing property.
• the second core material 43 is an aggregate of bodily fluid-absorbing materials such as ground pulp and superabsorbent polymer particles, and is preferably one of the surfaces in contact with the second outer sheet 41 and the second inner sheet 42. At least the surface in contact with the second inner sheet 42 is covered with a liquid-permeable, body fluid-diffusible second diffusive sheet 44 having a tissue paper or the like.
• the second panel 12 like the force extends to the front waist region 3 and a part of the inseam region 5 but does not extend to the rear waist region 4, and is located in the front waist region 3. It has a front part 46 and a rear part 47 located in the crotch region 5.
• the front portion 46 is joined to the backing sheet 10 via an adhesive (not shown).
• the rear portion 47 is a portion formed so as to be removably overlapped with the first panel 11 in the inseam region 5, and in the drawing, the rear portion 47 is deformed so as to protrude upward in the drawing, and Panel 11 Separated from 1.
• the rear end 47a see also FIG.
• the spacer 51 is a belt-shaped member formed by covering at least one thread rubber 52 with a nonwoven fabric 53 in an extended state, and is attached to the diaper 1 in a state of being extended in the lateral direction B with respect to the diaper 1. In the force diagram, the thread rubber 52 is in a contracted state.
• the rear portion 47 of the second panel 12 which is raised closer to the front waist region 3 than the center line P, forms a wall that bisects the diaper 1 in the front-rear direction.
• a pocket 56 that opens toward the rear waistline region 5 is formed between the first panel 11 and the front portion 38.
• FIG. 3 is a sectional view taken along the line III-III of FIG.
• the III-III line is located closer to the front waist area 3 than the center line P, and crosses the first panel 11 and the second panel 12.
• a leg-surrounding elastic member 27 is located between the outer sheet 10a and the inner sheet 10b, and is joined to at least one of the sheets 10a and 10b.
• the first outer sheet 31, the first inner sheet 32, and the first diffusible sheet 34 extend sideways from the first core material 33 and are bonded or bonded. They are joined to each other by welding and to the inner sheet 10b.
• the second outer sheet 41, the second inner sheet 42, and the second diffusible sheet 44 extend laterally from the second core 43 and are bonded or welded. They are joined to each other and to the first inner sheet 32 of the first panel 11.
• the spacer 51 is provided between the edges 11a and 11a of the first panel 11 and between the edges 12a and 12a of the second panel 12 so as to straddle the first core 33 and the second core 43.
• the core material 43 is bonded to the first inner sheet 32 and / or the second outer sheet 41 by bonding or welding in the vicinity of the side edge 43a.
• the leak-proof cuff 13 has an outer edge 19 bonded to the inner sheet 10a outside the edge 1la of the first panel 11 and the edge 12a of the second panel 12 by bonding or welding, and the inner edge 18 has a second edge. It covers a part of the first panel 11 and the second panel 12 (see Fig. 1).
• the inner edge 18 has a portion 61 indicated by a dashed line near the elastic member 21 that is in contact with the second inner sheet 42 of the second panel 12 via an adhesive 60.
• the portion 62 between the elastic member 21 and the portion 61 stands up above the second inner sheet 42 due to the contraction of the elastic member 21.
• this dimension W is preferably set to about 20 to 50 mm.
• FIG. 4 is an exploded perspective view of the diaper 1.
• the bottom of the figure shows the state before the inner sheet 10a and the outer sheet 10b forming the backing sheet 10 are laminated.
• a pair of front wings 23 and a pair of rear wings 24 are attached to the inner sheet 10a.
• a first outer sheet 31 which forms the first panel 11, a first core material 33, a first diffusible sheet 34, and a first inner sheet 32 are shown.
• a spacer 51 is shown above the first inner sheet 32.
• a second outer sheet 41 forming the second panel 12 Above the spacer 51, a second outer sheet 41 forming the second panel 12, a second core material 43, a second diffusive sheet 44, and a second inner sheet 42 are shown. .
• the imaginary lines shown in the first outer sheet 31 and the second outer sheet 41 indicate bending guide lines when the sheets 31 and 41 are bent in the process of manufacturing the diaper 1.
• the core material is missing, and the concave portion 36 is formed in this portion 66 in FIG.
• a pair of arc-shaped portions 67 in the second core material 43 are also portions where the core material is missing, and when the diaper 1 is worn, the second panel 12 is placed around the leg of the diaper wearer. Facilitates deformation along. Such a site 67 also appears in FIG.
• the leak prevention cuff 13 acting in this manner is a first means for separating the first panel 11 and the second panel 12 in the present invention.
• the spacer 51 contracts naturally near the opening of the pocket 56, as shown in FIG. 1), and the second panel 12 is deformed so as to be convex toward the inside of the diaper 1 to form a spacer.
• the pocket 56 is greatly opened as compared with the case where no is present.
• the spacer 51 acting in this way is a second means for separating the first panel 11 from the second panel in the present invention.
• the rear portion 47 of the second panel 12, which has been deformed so as to be raised to the inside of the diaper 1, has a rear end 47a between the line P and the line Q. It is possible to be located between.
• the strong rear portion 47 may be used to stop loose stool flowing from the rear waist region 4 or the crotch region 5 toward the front waist region 3 and enter the pocket 56, or to enter the pocket 56 or the front waist region 3 or the crotch region 5.
• urine flowing toward the rear waist region 4 can be stopped. Therefore, it is also possible to prevent loose stool and urine from mixing in the inseam region 5 and contaminating the skin of the diaper wearer.
• the means for separating the second panel 12 from the first panel 11 in this way includes joining the leak-proof cuff 13 to the second panel 12 at a portion 61 and a spacer. In some cases, only one of them may be sufficient. Whether to adopt the V ⁇ deviation means is determined based on the strength of the contraction force of the elastic members 21 and 52, the height of the bending rigidity in the lateral direction B of the first panel 11 and the second panel 12, and the like. .
• the diaper 1 when the inner surfaces of the first core material 33 and the second core material 43 are covered with the first diffusible sheet 34 and the second diffusible sheet 44, It facilitates the diffusion of bodily fluids on the inner surface, and when the core material 33, 43 contains fine powder of superabsorbent polymer, the fine powder leaks out of the first panel 11 or the second panel 12. Can be prevented.
• the first and second diffusible sheets 34 and 44 having such an action may cover the inner and outer surfaces of the first and second core members 33 and 43, respectively.
• the first and second diffusible sheets may be used in the diaper 1.
• 34, 44 can be omitted.
• the waist elastic member 20 and the leg elastic member 27 can also be omitted when unnecessary.
• FIG. 5 is a diagram illustrating an example of a process for continuously manufacturing the diaper 1 illustrated in FIG.
• the first continuous nonwoven fabric 101 is supplied.
• the first continuous nonwoven fabric 101 has an inner surface 101a and an outer surface 101b.
• the first core 33 illustrated in FIG. 2 is intermittently arranged in the first machine direction MD, and the first core 33 is A hot melt adhesive (not shown) is applied to the inner surface.
• the first continuous diffusive sheet 103 made of tissue paper or the like and capable of penetrating bodily fluids and having bodily fluid diffusibility is supplied in the first machine direction MD, and the first continuous diffusible sheet 103 is supplied.
• the first core material 33 is sandwiched between the first continuous nonwoven fabric 103 and the first continuous nonwoven fabric 101, and both side edges of the first continuous nonwoven fabric 101 are folded and welded to both side edges of the first continuous diffusible sheet 103, respectively. Or seal with adhesive or the like.
• the first continuous liquid-permeable sheet 106 through which body fluid can pass is supplied in the first machine direction MD, and the first core material 33 and the first continuous liquid-permeable sheet 103 are connected to the first continuous liquid-permeable sheet 103.
• the first continuous liquid-permeable sheet 106 is bonded to the first continuous non-woven sheet 103 and the first continuous non-woven fabric 101 by welding or bonding while the first continuous non-woven sheet 101 and the first continuous non-woven fabric 101 are sandwiched. Get 107.
• the second continuous nonwoven fabric 201 is supplied.
• the second continuous nonwoven fabric 201 has an inner surface 201a and an outer surface 201b.
• a hot melt adhesive (not shown) is applied to the inner surface 201a, and then the second core material illustrated in FIG. 43 is intermittently arranged in the second machine direction MD, and the inner surface of the second
• the second continuous diffusing sheet 202 which is capable of penetrating bodily fluids and has the ability to diffuse bodily fluids, is supplied to the second machine direction MD in the second machine direction MD.
• both side edges of the second continuous nonwoven fabric 201 are folded on both side edges of the second continuous diffusion sheet 202, respectively, and sealed by welding or bonding.
• the continuous spacer 204 is supplied in an extended state to the outer surface 20 lb of the second nonwoven fabric 201 so as to extend over the rear part 47 (see FIG. 2) of the second core 43, and Near the both side edges 43a (see FIG. 3) of the second continuous nonwoven fabric 201 by welding or bonding.
• the second continuous liquid-pervious sheet 203 through which bodily fluids can pass is supplied in the second machine direction MD.
• the second continuous body 205 is obtained by joining the dispersible sheet 202 and the second continuous nonwoven fabric 201 by welding or adhesion.
• the third machine direction MD in the figure is the direction in which the first continuum 107 and the second continuum 205 merge and advance.
• the first continuum 107 and the second continuum 205 are merged such that the rear portion 47 of the second core 43 overlaps the front portion 38 of the core 33 (see FIG. 2).
• the first continuous liquid-permeable sheet 106 and the second continuous nonwoven fabric 201 facing each other between the adjacent second core materials 43 and 43 at a portion shown by oblique lines in the figure are welded or welded.
• the third continuous body 301 is obtained by bonding with an adhesive.
• the third continuum 301 is extended in the third cross direction CD.
• the first cutting edge 302 and the second cutting edge 302 each include one first core material 33 and one second core material 43, and are formed by adjacent cutting lines 302 and 302.
• a first composite 305 having side edges 304 is obtained.
• the first complex 305 is rotated by 90 °.
• the rotated first composite 305 has front and rear edges 305a and 305b.
• the inner surface 401a and the outer surface 401b are provided.
• the inner surface 401a is formed of a liquid-impermeable plastic film
• the outer surface 401b is formed of a nonwoven fabric
• these films and the nonwoven fabric are laminated by adhesion or welding.
• the first composite 305 rotated by 90 ° in the thirteenth step 513 is combined with the first and second continuous nonwoven fabrics 101 and 201 in the first composite 304 to form a continuous liquid-impermeable sheet 401.
• Each of the first and second cuff continuities 403, 404 which are contractible leak-proof band-shaped members, is supplied in an expanded state, and the outer edges 403b, 404b is welded or bonded to the fourth continuum 402 near the first and second edges 303 and 304 of the first composite 305, respectively.
• the first and second cuff continuum 403, 4 The first and second cuff continuum bodies 403, 404 are superimposed on the first continuous liquid permeable sheet 106 and the second continuous liquid permeable sheet 203 so that the inner edge portions 403a, 404a of 04 face each other. It is joined to the fourth continuum 402 near the edges 305a, 305b formed before and after 305.
• a part of the inner edges 403a, 404a of the first and second cuff continuum bodies 403, 404 is further divided into a middle portion of the fourth continuum 402 in the fourth cross direction CD with respect to the fourth machine direction MD.
• Each of the first and second cuff continuums 403 and 404 supplied in the 16th step 516 is a fourth machine direction MD Picoo! /, F to the continuous nonwoven fabric 403d, 404d and the nonwoven fabric 403d, 404d
• wing material 405, 406, 407, 408 for forming the front wing portion 23 and the rear wing portion 24 of the diaper 1 is provided at a required portion of each edge of the fourth continuous body 402. Attach.
• the fastener 26 shown in FIG. 1 is attached to the wing material 407, 408.
• the fourth continuum 402 is extended in the fourth cross direction CD between the first composites 305 adjacent to each other.
• the precursor means a diaper for which some processing is scheduled in the 18th step 518 and subsequent steps.
• the diaper 1 obtained in the diaper manufacturing process is different from the diaper of FIG. 1 in that the diaper 1 does not include the waist elastic member and the leg elastic member, but these elastic members are described in FIGS. Explained. If the spacer 51 shown in FIGS. 2 and 3 is unnecessary in the diaper 1 manufactured in FIG. 5, the supply of the spacer continuum 204 in the eighth step 508 can be omitted.
• the first and second cuff continuum 403, 404 it is possible to omit the bonding between the portions of the inner edges 403a and 404a and the second continuous liquid-permeable sheet 203 via the adhesives 403c and 404c.
• the diaper 1 does not require the first diffusible sheet 34 and the second diffusible sheet 44, the first continuous diffusible sheet 103 in the third step 503 and the second continuous diffusible sheet in the seventh step 507 may be used.
• the supply of the sheet 202 can be omitted.
• the first panel 11 is obtained from the diffusible sheet 103 and the first continuous liquid-permeable sheet 106.
• the second panel 12 is obtained from the second continuous nonwoven fabric 201, the second core material 43, the second continuous diffusible sheet 202, the spacer continuous body 204, and the second continuous liquid-permeable sheet 203.
• FIG. 6 is a view showing the fourteenth and fifteenth steps 514 and 515 in a mode different from that of FIG.
• each of the elastic members 27 around both legs in FIG. 1 is formed on each of the both side edges 413 and 414 of the outer sheet 401b forming the liquid-impermeable continuous sheet 401.
• the continuous elastic members 411 and 412 are attached in an extended state by an adhesive (not shown).
• the inner sheet 401a and the outer sheet 401b are joined via an adhesive (not shown) to obtain a liquid-impermeable continuous sheet 401.
• the first composite 305 is joined to the liquid-impermeable continuous sheet 401 to obtain a fourth continuous body 402.
• an elastic member can be attached around the legs of the diaper 1 obtained in FIG.
• FIG. 7 is also a view showing fourteenth and fifteenth steps 514 and 515 in a mode different from that of FIG.
• the elastic member 20 (see FIG. 1) extending in the fourth cross direction CD is applied to the outer surface 401 and the outer surface 401b forming the liquid-impermeable continuous sheet 401 with an adhesive (not shown).
• the elastic member 20 is the same as the waist elastic member 20 of the diaper 1 in FIG. 1. In the figure, two elastic members 20 form a group, and each group is intermittently attached in the fourth machine direction MD. . Then, change the inner sheet 401a to the outer sheet 401b.
• the first composite body 305 is placed between the first group of elastic members 20 and the first group of elastic members 20 on the inner surface 401a and joined to obtain a fourth continuous body 402.
• a fourth continuous body 402 including the elastic member 20 it is possible to attach the elastic member 20 around the torso of the diaper 1 obtained in FIG. 5 and the diaper 1 obtained by using the process of FIG. it can.
• FIG. 8 is a view showing a part of the same step as FIG. 5 showing an example of the embodiment of the present invention.
• the first core material 33 is placed on the first continuous nonwoven fabric 101 traveling in the first machine direction MD
• the front portion 38 and the rear portion 39 of the first core material 33 are connected to the first machine direction.
• MD the second continuous nonwoven fabric 201 traveling in the second machine direction MD has a second core.
• the front part 46 and the rear part 47 of the second core material 43 are oriented in the second machine direction MD.
• it is almost horizontally aligned in the first machine direction MD.
• FIG. 9 is a view showing a part of the same step as FIG. 5 showing an example of the embodiment of the present invention.
• the first continuous nonwoven fabric 101 and the first core material 33 travel in the first machine direction MD in the same manner as in FIG.
• the second continuous nonwoven fabric 201 and the second core material 43 travel in the second machine direction MD in the same manner as in FIG. In the second machine direction MD,
• a second continuous body 205 formed by sandwiching the two core material 43 and the second diffusible sheet 202 with the second continuous nonwoven fabric 201 and the second continuous liquid permeable sheet 203 is sequentially cut along cutting lines 211 and 212.
• the second panel precursor 213 thus obtained is rotated by 90 ° and then placed on the second continuum 107 traveling in the first machine direction MD. In such a manufacturing process, it is easy to continuously supply the MD machine spacer 204 in the second machine direction similarly to that of FIG.
• FIGS. 10 and 11 are a perspective view of the diaper 1 similar to FIG. 1 obtained according to the present invention, and a cross-sectional view taken along line XI-XI of FIG.
• the second panel 12 of the diaper 1 has a bent portion 12d in which a part of a rear portion 47 is folded so as to overlap the second inner sheets 42.
• the second outer sheet 41 appears outside the pocket 56.
• Each of the leak prevention cuffs 18 is joined to the second outer sheet 41 at the bent portion 12d at the portion 61.
• the leak-preventing cuff 18 moves so as to rise from the panel-shaped portion 2 by the contraction action of the elastic member 21, and at that time, the rear portion 47 of the second panel 12 Then, the portion forming the bent portion 12d and the pocket 56 is lifted upward in FIG.
• the top portion 12e of the raised bent portion 12d can be brought into contact with the skin between the genitalia of the diaper wearer and the anus, and the bent portion 12d at such contact makes the forward loose stool.
• the flow and the backward force can stop the urine flow.
• the bent portion 12d of the nappy diaper 1 can be formed by folding a required portion of the first continuous body 205 between the ninth step 509 and the tenth step 510 in FIG.
• the 1st panel and 2nd panel which overlap so that the pocket for toilet bowls may be formed in the vicinity of a crotch area can be separated from each other, and the pocket can be opened greatly. Diapers can be manufactured continuously.

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• Health & Medical Sciences (AREA)
• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Biomedical Technology (AREA)
• Heart & Thoracic Surgery (AREA)
• Vascular Medicine (AREA)
• Epidemiology (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Manufacturing & Machinery (AREA)
• Botany (AREA)
• Absorbent Articles And Supports Therefor (AREA)
• Orthopedics, Nursing, And Contraception (AREA)

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• 2004
  • 2004-04-07 JP JP2004112819A patent/JP4532966B2/ja not_active Expired - Fee Related
• 2005
  • 2005-04-06 EP EP05728448A patent/EP1736126A4/en not_active Withdrawn
  • 2005-04-06 KR KR1020067021434A patent/KR100791879B1/ko not_active Expired - Fee Related
  • 2005-04-06 MY MYPI20051535A patent/MY144250A/en unknown
  • 2005-04-06 CN CNB2005800104368A patent/CN100528114C/zh not_active Expired - Fee Related
  • 2005-04-06 WO PCT/JP2005/006744 patent/WO2005097023A1/ja not_active Ceased
  • 2005-04-07 TW TW094111048A patent/TWI265019B/zh not_active IP Right Cessation
  • 2005-04-07 US US11/100,602 patent/US7198690B2/en not_active Expired - Fee Related

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