WO2011074389A1 - Method for manufacturing absorptive article - Google Patents

Method for manufacturing absorptive article Download PDF

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Publication number
WO2011074389A1
WO2011074389A1 PCT/JP2010/071158 JP2010071158W WO2011074389A1 WO 2011074389 A1 WO2011074389 A1 WO 2011074389A1 JP 2010071158 W JP2010071158 W JP 2010071158W WO 2011074389 A1 WO2011074389 A1 WO 2011074389A1
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WO
WIPO (PCT)
Prior art keywords
skin care
care agent
disposable diaper
absorbent article
sheet
Prior art date
Application number
PCT/JP2010/071158
Other languages
French (fr)
Japanese (ja)
Inventor
康宏 中野
信也 佐藤
昌彦 新家
Original Assignee
花王株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 花王株式会社 filed Critical 花王株式会社
Priority to CN201080046617.7A priority Critical patent/CN102573732B/en
Publication of WO2011074389A1 publication Critical patent/WO2011074389A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—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
    • A61F13/51113—Topsheet, i.e. the permeable cover or layer facing the skin comprising an additive, e.g. lotion or odour control
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/34—Oils, fats, waxes or natural resins

Definitions

  • the present invention relates to an absorbent article manufacturing method for continuously manufacturing an absorbent article in which a skin care agent is applied to a constituent material.
  • Patent Document 1 describes a disposable diaper in which a plant extract (skin care agent) having a skin care effect is applied to a top sheet of an absorbent article as a disposable diaper as described above.
  • the disposable diaper described in Patent Document 1 can efficiently suppress wearer's skin irritation and the like without inhibiting the absorption performance of the superabsorbent polymer.
  • the top sheet after applying the skin care agent conveys the sheet.
  • the skin care agent adheres to the transport facility by contacting with, and the transport facility is soiled.
  • Patent Document 1 does not describe any method for applying a plant extract to a predetermined part of an absorbent article.
  • Patent Document 1 does not describe any method for applying a plant extract to a predetermined part of an absorbent article.
  • Patent Document 2 describes a method for manufacturing an absorbent article in which a skin care agent is applied to a surface sheet by spraying, and then the skin care agent is cooled and solidified.
  • Patent Document 3 describes that a blower, a fan, or the like can be used to cool the outside of the treated diaper leg cuff and accelerate the crystallization of the fixing agent.
  • Patent Document 2 does not disclose any specific conditions for applying the skin care agent to the surface sheet by spraying, nor does it specifically disclose any cooling method.
  • Patent Document 3 describes cooling and its means, but there is no specific disclosure about the positional relationship between the lotion coating and the cooling means.
  • JP 2002-45391 A Japanese National Patent Publication No. 10-509896 JP 2001-314440 A
  • An object of the present invention is to provide a method for producing an absorbent article that is difficult and efficient to produce continuously.
  • the present invention provides an absorbent article for efficiently and continuously producing an absorbent article having a skin care agent applied to a surface sheet while preventing the skin care agent from adhering to unnecessary parts of the absorbent article. It is to provide a manufacturing method.
  • the present invention is a method for manufacturing an absorbent article in which an absorbent article in which a skin care agent is applied to a constituent sheet is continuously manufactured.
  • the skin care agent is semi-solid or solid at 20 ° C.
  • the present invention is a method for producing an absorbent article, in which an absorbent article in which a skin care agent is applied to a top sheet is continuously produced.
  • the skin care agent is semi-solid or solid at 20 ° C.
  • An application step of applying the skin care agent in a melted state from the outer surface side to the surface sheet of the absorbent article continuum in which the absorbent article having the surface sheet is continuous in the longitudinal direction, and application of the skin care agent A cooling step of cooling the applied skin care agent with a fluid on the surface sheet side of the absorbent article continuum before folding the absorbent article continuum on the surface sheet side.
  • FIG. 1 is a plan view illustrating a disposable diaper obtained by the first embodiment of the present invention with a part thereof broken.
  • FIG. 2 is a perspective view of a preferred topsheet used in the disposable diaper shown in FIG.
  • FIG. 3 is a schematic process diagram for attaching a skin care agent to the top sheet of the disposable diaper shown in FIG. 1 according to the first embodiment of the present invention.
  • FIG. 4 is a schematic process diagram for attaching a skin care agent to the top sheet of the disposable diaper shown in FIG. 1 according to the second embodiment of the present invention.
  • FIG. 5 is a schematic process diagram for attaching a skin care agent to the top sheet of the disposable diaper shown in FIG. 1 according to the third embodiment of the present invention.
  • FIG. 1 is a plan view illustrating a disposable diaper obtained by the first embodiment of the present invention with a part thereof broken.
  • FIG. 2 is a perspective view of a preferred topsheet used in the disposable diaper shown in FIG.
  • FIG. 3 is a schematic process diagram for attaching a
  • FIG. 6 is a schematic process diagram for attaching a skin care agent to the top sheet of the disposable diaper shown in FIG. 1 according to the fourth embodiment of the present invention.
  • FIG. 7 is a plan view showing the disposable diaper obtained by the fifth embodiment of the present invention with a part thereof broken.
  • FIG. 8 is a perspective view of a preferred topsheet used in the disposable diaper shown in FIG.
  • FIG. 9 is a schematic view of a disposable diaper manufacturing apparatus used for carrying out the manufacturing method of the fifth embodiment of the present invention.
  • FIG. 10 is a schematic view of a part of the disposable diaper manufacturing apparatus shown in FIG. 9 as viewed from the side.
  • FIG. 11 is the schematic which looked at a part of disposable diaper manufacturing apparatus used for implementation of the manufacturing method of the 6th embodiment of this invention from the side surface.
  • FIG. 12 is the schematic which looked at a part of disposable diaper manufacturing apparatus used for implementation of the manufacturing method of the 7th embodiment of this invention from the side surface.
  • FIG. 13 is a schematic view of a part of a disposable diaper manufacturing apparatus used for carrying out the manufacturing method of another embodiment of the present invention as viewed from the side.
  • the disposable diaper 1 as an example manufactured in the first embodiment is disposed between a liquid-permeable top sheet 10, a liquid-impermeable or water-repellent back sheet 11, and both the sheets.
  • a liquid-retaining absorber 12 is provided.
  • the disposable diaper 1 has, in its longitudinal direction (Y direction in the figure), a back side portion A disposed on the wearer's back side when worn and a crotch portion disposed on the crotch portion. C and a ventral side B arranged on the ventral side.
  • Y direction in the figure a back side portion A disposed on the wearer's back side when worn
  • a crotch portion disposed on the crotch portion.
  • C and a ventral side B arranged on the ventral side.
  • side sheets 13 made of a water-repellent nonwoven fabric are disposed on both sides of the disposable diaper 1 in the longitudinal direction (Y direction) so as to cover both side portions of the topsheet 10.
  • the top sheet 10 and each side sheet 13 are joined to the back sheet 11 outside the periphery of the absorber 12.
  • An elastic member 14 for forming leg gathers is disposed on the outer leg flap portion of the absorbent body 12 in the width direction (X direction in the figure), and the diaper width direction (X direction) center of the side seat 13 described above
  • An elastic member 15 for forming a three-dimensional gather is disposed on the side edge on the side.
  • the disposable diaper 1 is a so-called unfolded diaper.
  • Fastening tapes 16, 16 provided on both side edges in the longitudinal direction (Y direction) of the back side A are connected to the ventral side part.
  • the landing tape 17 provided on the outer surface of B, it is worn on the body and used.
  • the absorbent body 12 As the back sheet 11, the absorbent body 12, the side sheet 13, the fastening tape 16, the landing tape 17, and the elastic members 14 and 15, those used for this type of article can be used without any particular limitation. it can.
  • As the absorbent body 12 a fiber aggregate made of a fiber material such as pulp fiber, or a substance obtained by covering the fiber aggregate with water absorbent polymer particles, etc., with tissue paper or a water-permeable nonwoven fabric may be used. it can.
  • a non-woven fabric As the surface sheet 10 of the disposable diaper 1, a non-woven fabric, a material having a large number of apertures formed thereon, a film having a large number of apertures, etc. can be used. It is preferable to use a nonwoven fabric or a nonwoven fabric with an uneven structure.
  • a laminated nonwoven fabric having a two-layer structure composed of a lower layer nonwoven fabric 102 that forms a surface directed toward the 12 side can be mentioned.
  • the non-woven fabric 101 of the upper layer protrudes toward the wearer's skin side at a portion other than the joint portion 103, and forms a large number of convex portions 104 that are hollow inside.
  • FIG. 1 As shown in FIG.
  • the convex portions 104 and the joint portions 103 are arranged alternately and in multiple rows in the X direction and the Y direction.
  • the upper layer nonwoven fabric 101 and the lower layer nonwoven fabric 102 are made of a nonwoven fabric that does not substantially expand and contract.
  • the convex portion 104 is a flat rectangular parallelepiped or truncated quadrangular pyramid whose ridgeline is rounded as a whole, while the joint portion 103 is rectangular.
  • the Y direction in the figure coincides with the conveyance direction of the band-shaped topsheet 100 described later, and also coincides with the longitudinal direction of the absorbent article when the topsheet 10 is incorporated in the disposable diaper 1 (absorbent article). ing.
  • the sheets described in JP-A-2002-187228, JP-A-2004-345357, and JP-A-2004-275296 can also be used. .
  • the skin sheet having a predetermined effect on the skin of the wearer is applied to the surface sheet 10 of the disposable diaper 1 on the surface directed toward the skin of the wearer.
  • a skin care agent is applied to the upper nonwoven fabric 101 of the topsheet 10 in the disposable diaper 1.
  • the skin care agent is applied by coating the upper layer nonwoven fabric 101 with a coating liquid containing the skin care agent.
  • the skin sheet of the wearer's skin, inflammation, and the like are effectively suppressed and cured by the skin care agent being applied to the top sheet 10.
  • a skin care agent As a skin care agent, a semi-solid or solid one at 20 ° C. is used, and a skin care agent can be used without particular limitation on those having the effect of suppressing or healing rash, inflammation, etc. What is used as an emollient in the field of cosmetics can be used.
  • the semi-solid means that plasticity (fluidity) appears when external force or heat is applied, or that has plasticity (fluidity) even when no external force is applied, and is low to high fluidity. Up to. Specific examples of the semi-solid or solid skin care agent at 20 ° C.
  • fatty acid ester compounds include petroleum hydrocarbons, animal and vegetable oils and fats, animal and vegetable waxes, fatty acid ester compounds, alkyl ethoxylates, fatty acid ester ethoxylates, fatty alcohols, and polysiloxanes. It is done.
  • emollients examples include diamide derivatives (BRS), liquid paraffin, silicone oil, animal and vegetable oils (olive oil, jojoba oil, safflower oil, squalane and squalene, etc.), monoglycerides, diglycerides, triglycerides, aliphatic ethers (myristyl- 1,3-dimethylbutyl ether, palmityl-1,3-dimethylbutyl ether, stearyl-1,3-dimethylbutyl ether, palmityl-1,3-methylpropyl ether, stearyl-1,3-methylpropyl ether, etc.) and iso
  • a fixing agent to stearyl-cholesterol ester alone or a mixture of two or more thereof, a semi-solid or solid skin care agent at 20 ° C. can be obtained.
  • the fixing agent, C 14 -C 22 fatty alcohols, C 12 -C 22 fatty acids, as well as degree of ethoxylation average is from 2 to about 30 C 12 -C 22 fatty alcohol ethoxylates, and mixtures thereof Contains one element selected from the group.
  • Preferred immobilizing agents include C 16 -C 18 fatty alcohols, and most preferably include elements selected from the group consisting of cetyl alcohol, stearyl alcohol, and mixtures thereof. Of these, a mixture of cetyl alcohol and stearyl alcohol is particularly preferred.
  • Preferred other immobilizing agents include C 16 -C 18 fatty acids, most preferably elements selected from the group consisting of palmitic acid, stearic acid, and mixtures thereof.
  • a mixture of palmitic acid and stearic acid is particularly preferred.
  • Further preferred other immobilizing agents include C 16 -C 18 fatty alcohol ethoxylates having an average degree of ethoxylation of about 5 to about 20.
  • the fatty alcohol, fatty acid and fatty alcohol are preferably linear.
  • the coating solution containing the skin care agent may contain an antistatic agent, an antioxidant, a pH adjuster, a smoothing agent, an emulsifier, an antibacterial agent, an antifungal agent, a fragrance, and the like.
  • the manufacturing method of this embodiment is a manufacturing method of the disposable diaper 1 which manufactures continuously the disposable diaper 1 by which the skin care agent was apply
  • the longitudinal direction (Y direction) and conveyance direction of the disposable diaper 1 are the same directions
  • the skin care agent adhering apparatus 2 used for carrying out the manufacturing method of the first embodiment melts the skin care agent on one surface of the belt-like surface sheet 100 that becomes the conveyed surface sheet 10.
  • the coating device 5 is applied in a state, and the cooling device 6 is used to cool the applied skin care agent with a fluid.
  • the conveyance roll 4 is a roll which conveys the strip
  • the transport roll 4 includes a transport roll 41 that transports the belt-shaped topsheet 100 in the transport direction (Y direction), and a downstream side of the transport roll 41, and the strip-shaped topsheet 100 extends in the vertical direction.
  • a transport roll 45 for transporting in the transport direction.
  • the conveyance roll 41 and the conveyance roll 45 are drive rolls that convey the belt-shaped topsheet 100 in the conveyance direction, and other conveyance rolls 42, The transport roll 43 and the roll 44 are so-called free rolls that are not driven.
  • the driving roll a general nip type feed roll, an omega type feed roll in which each roll is arranged in an omega shape, a feed roll with an increased surface friction of the roll, or the like can be used.
  • the coating device 5 is disposed between a transport roll 42 and a transport roll 43 that transport the belt-shaped topsheet 100 in the vertical direction (Z direction in the figure).
  • the coating device 5 includes a nozzle 51 that discharges the skin care agent to the tip of the coating device 5, and a supply path that supplies the skin care agent in a melted state to the inside of the coating device 5 with compressed air ( (Not shown) and a melting tank (not shown) that is connected to a supply path (not shown) and melts a semi-solid or solid skin care agent at 20 ° C.
  • compressed air (Not shown)
  • a melting tank not shown
  • the coating device 5 has a belt-like topsheet 100 in which the nozzle 51 of the coating device 5 is transported in the Z direction by the transport roll 42 and the transport roll 43 so as to apply the skin care agent from the horizontal direction. It is preferable that it is arranged in the vertical direction. By being arranged in this manner, contamination of the coating device 5 due to rebound from the top sheet 100 when the skin care agent is applied, specifically, the liquid from the coating device 5 when the skin care agent is a low viscosity agent. It is possible to prevent contamination due to dropping to the top sheet 100 due to accumulation of skin care agents.
  • a coating solution of a skin care agent is applied to one surface of the belt-shaped top sheet 100 by the coating device 5.
  • the coating liquid of a skin care agent is apply
  • the coating liquid of the skin care agent applied to the belt-shaped topsheet 100 by the coating device 5 is not particularly limited in the application basis weight, but from the viewpoint of the influence on the absorption performance of the absorbent body 12, the skin care effect, the texture, etc. It is preferably in the range of 0.1 to 2.0 g / m 2 , more preferably in the range of 0.2 to 1.0 g / m 2 .
  • This coating amount can be determined from the weight difference between the coating object before coating and after coating. Further, from the viewpoint of uniformly applying the skin care agent coating liquid to the belt-like topsheet 100, the distance between the nozzle 51 of the coating device 5 and the belt-like topsheet 100 being conveyed is preferably 1 mm to 200 mm. More preferably, it is 10 mm to 100 mm.
  • the cooling device 6 is disposed on the upstream side of the roll 44 and between the transport roll 43 and the roll 44.
  • the cooling device 6 is provided with a fluid ejection gun that ejects fluid onto one surface side of the top sheet 100 to which the skin care agent is applied.
  • the skin care agent applied to one surface (upper nonwoven fabric 102) of the belt-like top sheet 100 comes into contact with the roll 44 that changes the conveying direction of the belt-like top sheet 100 for the first time. Therefore, it is preferable to arrange the cooling device 6 immediately before the roll 44.
  • the transport equipment that first comes into contact with one surface (upper nonwoven fabric 102) of the belt-shaped topsheet 100 to which the skin care agent is applied is the roll 44, but upstream of the roll 44. If there is a transport facility that first comes into contact with one surface (upper nonwoven fabric 102) of the strip-shaped topsheet 100 to which the skin care agent is applied, the cooling device 6 is disposed immediately before that portion. For example, as the transport facility that comes into contact first, in addition to the roll 44, a direction changing bar that changes the transport direction of the belt-shaped topsheet 100, a sailor plate that folds the strip-shaped topsheet 100, and the like.
  • a fluid ejection gun that ejects fluid can be used, and a fluid is supplied to the inside of the fluid ejection gun, a nozzle 61 that ejects fluid to the tip of the fluid ejection gun.
  • Supply path (not shown).
  • the fluid include air, gas, water, and the like, and air can be suitably used from the viewpoints of cost, maintenance such as periodic maintenance of the supply device and device contamination.
  • the temperature of the fluid to be ejected is preferably lower than the melting point of the skin care agent, more preferably 10 ° C. or more lower than the melting point, and particularly preferably 20 ° C. or more lower than the melting point.
  • a suction device (not shown) is provided at a position facing the nozzle 61 and the belt-like topsheet 100, and air is discharged (blowed) from the nozzle 61.
  • a suction device By sucking the air with a suction device, it is possible to use a device that cools the air by passing the air through the band-shaped topsheet 100 to which the skin care agent is applied.
  • the tip of the nozzle 61 is arranged in a direction opposite to the conveying direction of the band-shaped topsheet 100, and air is passed from the nozzle 61 in a direction opposite to the conveying direction of the band-shaped topsheet 100 to which the skin care agent is applied.
  • the apparatus which discharges (blows) and cools can be used.
  • the cooling device 6 is disposed on one surface side of the belt-shaped topsheet 100, and from the viewpoint of uniformly cooling the skin care agent applied to one surface of the strip-shaped topsheet 100 without blowing off.
  • the distance between the nozzle 61 and the transported strip-shaped topsheet 100 is preferably 1 mm to 200 mm, and more preferably 10 mm to 100 mm.
  • the pressure of the fluid discharged from the nozzle 61 is preferably 0.01 to 1.0 MPa, and more preferably 0.1 to 0.5 MPa.
  • the flow rate of the fluid discharged from the nozzle 61 is preferably 10 to 1000 l / min, more preferably 50 to 500 l / min.
  • the belt-like topsheet 100 that becomes the topsheet 10 is transported by the transport roll 4.
  • the topsheet 10 is a non-woven fabric having a concavo-convex structure, for example, an embossing roll having a convex portion corresponding to the joint portion 103 on the peripheral surface, and a roll having a convex portion that engages with the convex portion
  • the surface facing the embossing roll is between a flat roll and a smooth surface.
  • the upper surface nonwoven fabric 101 continuum and the lower layer nonwoven fabric 102 continuum are supplied in layers and joined together to form a band-shaped topsheet 100 having an uneven structure.
  • the application device 5 located between the transport roll 42 and the transport roll 43 is applied to one surface of the belt-like topsheet 100 in a state where the skin care agent is melted (application step D).
  • the skin care agent is apply
  • the skin care agent may be applied continuously on one surface of the strip-shaped topsheet 100, or on one surface of the strip-shaped topsheet 100 so as to be applied to a part of the topsheet 10 of the formed disposable diaper 1. It may be applied intermittently.
  • the applied skin care agent is cooled with a fluid from one side of the strip-shaped topsheet 100 (cooling step E).
  • the direction of the strip-shaped topsheet 100 is changed by the roll 44 and transported in the Y direction by the transport roll 45. Is done.
  • the band-shaped topsheet 100 to which the skin care agent is attached is conveyed to the next step.
  • the other surface side (the surface side where the skin care agent is not applied) of the band-shaped topsheet 100 to which the skin care agent is adhered and the continuous body of the back surface sheet 32 are intermittent in the transport direction (Y direction).
  • the elastic member 14 for leg gather formation is fixed according to a conventional method in a state where the elastic member 14 is extended in the transport direction (Y direction).
  • a continuous body of side sheets 100 is usually provided along one side of the belt-shaped surface sheet 100 (the surface on which the skin care agent is applied) along both sides of the belt-shaped surface sheet 100 in the conveying direction (Y direction).
  • the elastic member 15 for forming a three-dimensional gather is extended in the conveying direction (Y direction) on the inner side in the width direction (X direction) of the continuous body of each side sheet 100. Fix it.
  • the disposable diaper 1 is continuously obtained by cutting the continuous body of the disposable diaper 1 thus formed by a known cutting means.
  • points that are not particularly described can be manufactured in the same manner as the conventional manufacturing method of a so-called longitudinal flow type disposable disposable diaper.
  • the manufacturing method of the first embodiment it is possible to efficiently and continuously manufacture the disposable diaper 1 in which a skin care agent is applied to a part of the topsheet 10.
  • the applied skin care agent is cooled by the fluid from one surface side of the belt-like topsheet 100 by the cooling device 6 before contacting the transport facility (roll 44).
  • one side of the surface sheet 100 that contacts the transport facility (roll 44) in the case of a nonwoven fabric with a concavo-convex structure) can be actively cooled, and the applied skin care agent 18 constitutes the surface sheet 10 It enters into the fiber and is fixed, and it is difficult for the skin care agent to adhere to the transport facility (roll 44).
  • the disposable diaper 1 in which the skin care agent is applied to a part of the top sheet 10 without the need for cleaning.
  • the skin care agent is fixed to the topsheet 100 at the application position of the absorbent article, it is difficult to shift to a part that is not required during manufacture, and the absorbent article provided with the skin care agent at a desired position can be accurately obtained.
  • the skin care agent attaching device 2B used in the implementation of the manufacturing method of the second embodiment is similar to the skin care agent attaching device 2 used in the implementation of the manufacturing method of the first embodiment.
  • the preliminary cooling device 7 is disposed on the upstream side of the coating device 5 and between the transport roll 41 and the transport roll 42. As shown in FIG. 4, the preliminary cooling device 7 is arranged on one surface side of the belt-like topsheet 100 so that the one surface side of the beltlike topsheet 100 to which the skin care agent is applied can be precooled. It is preferable. As shown in FIG. 4, a fluid injection gun that ejects fluid can be used as the precooling device 7, and a nozzle 71 that discharges fluid to the tip of the fluid ejection gun, and fluid inside the fluid ejection gun A supply path (not shown) for supply. Examples of the fluid include air, gas, water, and the like, and air can be preferably used from the viewpoint of cost.
  • the preliminary cooling device 7 is arranged on one surface side of the belt-shaped topsheet 100, and cools uniformly without damaging the strip-shaped topsheet 100.
  • the distance between the nozzle 71 and the transported strip-shaped topsheet 100 is preferably 1 mm to 200 mm, and more preferably 10 mm to 100 mm.
  • the temperature of the fluid to be ejected is preferably the same as the melting point of the skin care agent or lower than the melting point of the skin care agent.
  • the belt-like topsheet 100 to be the topsheet 10 is transported in the Y direction by the transport roll 4.
  • the belt-shaped top sheet 100 is cooled in advance with a fluid.
  • the pre-cooling device 7 performs skin care.
  • the belt-shaped topsheet 100 to which the agent is applied is cooled with a fluid from one surface side of the strip-shaped topsheet 100 (preliminary cooling step F).
  • the disposable diaper 1 can be manufactured through the same steps D and E (see FIG. 4) as the manufacturing method of the disposable diaper 1 of the first embodiment.
  • the cooling efficiency is improved because the precooling device 7 holds cold air in the convex portion, and this is effective for a bulky sheet that is difficult to cool only by the cooling step E.
  • the skin care agent attaching apparatus 2C used in the implementation of the manufacturing method of the third embodiment is similar to the skin care agent attaching apparatus 2 used in the implementation of the manufacturing method of the first embodiment, as shown in FIG. A transport roll 4 for transporting the strip-shaped topsheet 100, a coating device 5 for applying the skincare agent to one surface in a melted state, and a cooling device for cooling the coated skincare agent with a fluid
  • the cooling device 6B used for carrying out the manufacturing method of the third embodiment is different from the cooling device 6 used for carrying out the manufacturing method of the first embodiment.
  • the cooling device 6 ⁇ / b> B is disposed on the upstream side of the roll 44 and between the transport roll 43 and the roll 44.
  • the skin care agent applied to one surface (upper nonwoven fabric 102) of the belt-like top sheet 100 is a roll that is a transport facility that transports the belt-like top sheet 100.
  • the cooling device 6 ⁇ / b> B is disposed immediately before the roll 44.
  • a fluid ejection gun that ejects fluid can be used, and a fluid is supplied to the nozzle 61 that discharges fluid to the tip of the fluid ejection gun and to the inside of the fluid ejection gun.
  • Supply path (not shown).
  • the fluid include air, gas, water, and the like, and air can be preferably used from the viewpoint of cost.
  • the cooling device 6B cools the applied skin care agent with fluid from both sides of the belt-like surface sheet 100.
  • the cooling device 6 ⁇ / b> B includes a fluid ejection gun 6 a disposed on one surface side of the belt-shaped surface sheet 100 and a fluid disposed on the other surface side of the belt-shaped surface sheet 100.
  • a belt-like surface sheet so that the skin care agent applied to one surface of the belt-like surface sheet 100 is confined inside the belt-like surface sheet 100, that is, between constituent fibers of the surface sheet 100. Fluid is ejected from both sides of 100.
  • the skin care agent applied on one surface of the belt-shaped topsheet 100 is not blown away and is uniformly cooled, and the distance between the nozzle 61a and the transported strip-shaped topsheet 100 is 1 mm to It is preferably 200 mm, and more preferably 10 mm to 100 mm.
  • the fluid spray gun 6b has a gap between the nozzle 61b and the transported strip-shaped topsheet 100 as follows: The thickness is preferably 1 mm to 200 mm, more preferably 10 mm to 100 mm.
  • the belt-like topsheet 100 to be the topsheet 10 is transported in the Y direction by the transport roll 4.
  • the skin care agent is applied to one surface of the belt-shaped topsheet 100 by the application device 5 (application step D).
  • the skin care agent applied by the cooling device 6 ⁇ / b> B (fluid spray guns 6 a and 6 b) that is disposed upstream of the roll 44 and between the transport roll 43 and the roll 44. Is cooled with a fluid from both sides (one side and the other side) of the belt-like topsheet 100.
  • the belt-shaped surface sheet is used so that the skin care agent applied to one surface of the belt-shaped surface sheet 100 is confined between the constituent fibers of the belt-shaped surface sheet 100 by the cooling device 6B (fluid spray guns 6a and 6b).
  • the skin care agent applied to the belt-like topsheet 100 is cooled with the fluid before the fluid is ejected from both sides of the belt 100 and contacted with the transport facility (roll 44) that transports the belt-like topsheet 100 (cooling step). E ').
  • the disposable diaper 1 can be manufactured by going through the same process (see FIG. 5) as the manufacturing method of the disposable diaper 1 of the first embodiment.
  • the cooling device 6B includes the fluid jet guns 6a and 6b disposed on both sides of the belt-like topsheet 100 as shown in FIG. Since the skin care agent applied to 100 is sprayed from both sides of the belt-like surface sheet 100 to cool the skin care agent so that the skin care agent is confined inside the belt-like surface sheet 100, the skin care agent is cooled. It is difficult to further adhere skin care agents. For this reason, it is possible to manufacture the disposable diaper 1 in which the skin care agent is applied to a part of the surface sheet 10 more efficiently and continuously, making it less difficult to contaminate the transport facility and cleaning.
  • the manufacturing method of the third embodiment when a multilayer nonwoven fabric or an uneven nonwoven fabric is used as the topsheet 10 of the disposable diaper 1, it is easy to confine within the beltlike topsheet 100 (between constituent fibers). As a result, the above-described effects are particularly achieved.
  • the skin care agent attaching apparatus 2D used for carrying out the manufacturing method of the fourth embodiment is similar to the skin care agent attaching apparatus 2 used for carrying out the manufacturing method of the first embodiment, as shown in FIG. A transport roll 4 for transporting the strip-shaped topsheet 100, a coating device 5 for applying the skincare agent to one surface in a melted state, and a cooling device for cooling the coated skincare agent with a fluid
  • the conveyance roll used for implementation of the manufacturing method of a 4th embodiment differs from the conveyance roll 4 used for implementation of the manufacturing method of a 1st embodiment.
  • the roll 44b of the transport roll 4 includes a cooling means for lowering the temperature.
  • the roll 44 b has an air port 400 that extends across both ends in the width direction (X direction).
  • the cooling means can lower the temperature of the roll 44b by blowing air through the air port 400 that passes therethrough at an arbitrary timing.
  • Examples of other cooling means used for the roll 44b include a cooling roll having cooling water inside and a heat pipe system (repeating evaporation and condensation inside).
  • the belt-like topsheet 100 to be the topsheet 10 is transported by the transport roll 4.
  • a skin care agent is applied to one surface of the belt-shaped top sheet 100 by the application device 5 (application step D).
  • the applied skin care agent is cooled with a fluid by the cooling device 6 (cooling step E).
  • the belt-shaped surface is formed by the roll 44 b whose temperature is lower than that of the other transport rolls 41, 42, 43, 45 while the one surface side of the belt-shaped topsheet 100 and the roll 44 b are in contact with each other.
  • the strip-shaped topsheet 100 to which the direction of the sheet 100 is changed and the skin care agent is adhered by the transport roll 45 is transported to the next step.
  • the disposable diaper 1 can be manufactured through the same process as the manufacturing method of the disposable diaper 1 of the first embodiment.
  • the manufacturing method of the fourth embodiment since the temperature of the roll 44b can be lowered, the skin care agent applied to the belt-like topsheet 100 is more difficult to adhere to the transport facility (roll 44). For this reason, it is possible to manufacture the disposable diaper 1 in which the skin care agent is applied to a part of the surface sheet 10 more efficiently and continuously, making it less difficult to contaminate the transport facility and cleaning.
  • the manufacturing method of the absorbent article of the present invention is not limited to the manufacturing methods of the first, second, third, and fourth embodiments described above, and can be changed as appropriate.
  • the disposable diaper 1 manufactured by the manufacturing method according to the first, second, third, and fourth embodiments described above is an unfolded disposable diaper, but may be a pants-type disposable diaper.
  • Absorbent articles such as napkins and absorbent pads may be used.
  • the application target is a surface sheet of an absorbent article as in the manufacturing methods of the first, second, third, and fourth embodiments described above
  • the constituent sheets applied in the application process described above are individually It may be a continuous body of absorbent articles that are continuous in a strip shape before being cut into pieces.
  • the skin care agent attaching device used in the first, second, third, and fourth embodiments described above applies the skin care agent by the application device 5, but the application method of the skin care agent is as follows.
  • Various methods other than can be used for example, as a coating method, a die coater method, a slot spray method, a curtain spray method, a melt blown method, a spiral spray method, a gravure method, a bead method, or the like can be used.
  • the conveyance roll 42 and the conveyance roll 43 of the skin care agent adhesion apparatus used for the above-mentioned 1st, 2nd, 3rd, 4th embodiment make the strip
  • the conveyance roll 4 of the above-mentioned 4th embodiment although only the roll 44b is cooled, not only the roll 44b but the conveyance roll 41, 42, 43 is cooled, and a sheet
  • the transport roll 4 (especially the roll 44) has an organic coating made of fluorine resin, siloxane resin, engineering plastic, super engineering plastic, etc., or a combination thereof, which is excellent in releasability and slipperiness, from the viewpoint of preventing adhesion of the skin care agent. May be applied.
  • a disposable diaper 1A as an example manufactured in the fifth embodiment is disposed between a liquid-permeable top sheet 10, a liquid-impermeable or water-repellent back sheet 11, and both the sheets.
  • a liquid-retaining absorber 12 is provided.
  • the disposable diaper 1A has, in its longitudinal direction (Y direction in the figure), a back side portion A disposed on the wearer's back side when worn and a crotch portion disposed on the crotch portion. C and a ventral side B arranged on the ventral side. As shown in FIG.
  • side sheets 13 made of a water-repellent nonwoven fabric are disposed on both sides in the longitudinal direction (Y direction) of the disposable diaper 1 ⁇ / b> A so as to cover both side portions of the topsheet 10.
  • the top sheet 10 and each side sheet 13 are joined to the back sheet 11 outside the periphery of the absorber 12.
  • An elastic member 14 for forming leg gathers is disposed on the outer leg flap portion of the absorbent body 12 in the width direction (X direction in the figure), and the diaper width direction (X direction) center of the side seat 13 described above
  • An elastic member 15 for forming a three-dimensional gather is disposed on the side edge on the side.
  • the disposable diaper 1 ⁇ / b> A is a so-called unfolded diaper, and fastening tapes 16, 16 provided on both side edges in the longitudinal direction (Y direction) of the dorsal side A are connected to the ventral side part.
  • the liquid-impermeable or water-repellent back sheet 11, the absorbent body 12, the water-repellent side sheet 13, the fastening tape 16, the landing tape 17, and the elastic members 14 and 15 are used for this type of article.
  • the absorbent body 12 a fiber aggregate made of a fiber material such as pulp fiber, or a substance obtained by covering the fiber aggregate with water absorbent polymer particles, etc., with tissue paper or a water-permeable nonwoven fabric may be used. it can.
  • a non-woven fabric As the surface sheet 10 of the disposable diaper 1A, a non-woven fabric, a material in which a large number of apertures are formed, a film in which a large number of apertures are formed, and the like can be used. It is preferable to use a non-woven fabric or an uneven structure nonwoven fabric.
  • an upper nonwoven fabric 101 that forms a skin contact surface (a surface directed toward the wearer's skin) of the disposable diaper 1 ⁇ / b> A, and an absorbent body A laminated nonwoven fabric having a two-layer structure composed of a lower layer nonwoven fabric 102 that forms a surface directed toward the 12 side can be mentioned.
  • the non-woven fabric 101 of the upper layer protrudes toward the wearer's skin side at a portion other than the joint portion 103, and forms a large number of convex portions 104 that are hollow inside.
  • the convex portions 104 and the joint portions 103 are arranged alternately and in multiple rows in the X direction and the Y direction.
  • the upper layer nonwoven fabric 101 and the lower layer nonwoven fabric 102 are made of a nonwoven fabric that does not substantially expand and contract.
  • the convex portion 104 is a flat rectangular parallelepiped or truncated quadrangular pyramid with rounded ridgelines as a whole, while the joint portion 103 is rectangular.
  • the Y direction in the figure coincides with the conveyance direction of the band-shaped topsheet 100 described later, and also coincides with the longitudinal direction of the absorbent article when the topsheet 10 is incorporated in the disposable diaper 1A (absorbent article).
  • the surface sheet 10 having the concavo-convex structure in addition to the sheet shown in FIG. 8, the sheets described in JP-A Nos. 2002-187228, 2004-345357, and 2004-275296 can also be used. .
  • a skin care agent 18 having a predetermined effect on the skin of the wearer is applied to the surface sheet 10 of the disposable diaper 1A on the surface facing the wearer's skin. Specifically, the skin care agent 18 is applied mainly to the upper nonwoven fabric 101 of the topsheet 10 in the disposable diaper 1A. In the disposable diaper 1A, the skin care agent 18 is applied to the top sheet 10, so that the wearer's skin irritation, inflammation, and the like are effectively suppressed and cured.
  • the skin care agent 18 used in the present invention means a semi-solid or solid at 20 ° C. containing a skin care ingredient having an effect of suppressing / healing rash, inflammation and the like on the wearer's skin.
  • the semi-solid or solid skin care agent at 20 ° C. includes not only a skin care component itself that becomes a semi-solid or solid at 20 ° C., but also a skin care component itself that does not become a solid at 20 ° C. Those that become semi-solid or solid at 20 ° C. by mixing the immobilizing agent are included.
  • skin care agent 18 what is used as an emollient agent in the field of cosmetics etc. can be used, for example.
  • the semi-solid means that plasticity (fluidity) appears when external force or heat is applied, or that has plasticity (fluidity) even when no external force is applied, and is low to high fluidity.
  • Specific examples of the semi-solid or solid skin care agent 18 at 20 ° C. include petroleum hydrocarbons, animal and vegetable oils and fats, animal and vegetable waxes, fatty acid ester compounds, alkyl ethoxylates, fatty acid ester ethoxylates, fatty alcohols, polysiloxanes, and the like. Is mentioned.
  • emollients examples include diamide derivatives (BRS), liquid paraffin, silicone oil, animal and vegetable oils (olive oil, jojoba oil, safflower oil, squalane and squalene, etc.), monoglycerides, diglycerides, triglycerides, aliphatic ethers (myristyl- 1,3-dimethylbutyl ether, palmityl-1,3-dimethylbutyl ether, stearyl-1,3-dimethylbutyl ether, palmityl-1,3-methylpropyl ether, stearyl-1,3-methylpropyl ether, etc.) and iso Stearyl-cholesterol ester or the like can be used alone or in appropriate combination of two or more.
  • BRS diamide derivatives
  • liquid paraffin silicone oil
  • animal and vegetable oils olive oil, jojoba oil, safflower oil, squalane and squalene, etc.
  • the viscosity (melting point) of the skin care component When the viscosity (melting point) of the skin care component is low, it can be adjusted to a skin care agent 18 that becomes a semi-solid or solid at 20 ° C. as a whole (mixture) by adding a fixing agent as described above.
  • the fixing agent C 14 -C 22 fatty alcohols, C 12 -C 22 fatty acids, ethoxylated degree of average 2 to about 30 C 12 -C 22 fatty alcohol ethoxylates, and mixtures thereof
  • Preferred immobilizing agents include C 16 -C 18 fatty alcohols, more preferably one element selected from the group consisting of cetyl alcohol, stearyl alcohol, and mixtures thereof.
  • a mixture of cetyl alcohol and stearyl alcohol is particularly preferred.
  • Other preferred immobilizing agents include C 16 -C 18 fatty acids and include one element selected from the group consisting of palmitic acid, stearic acid, and mixtures thereof. Of these, a mixture of palmitic acid and stearic acid is particularly preferred.
  • Further preferred other immobilizing agents include C 16 -C 18 fatty alcohol ethoxylates having an average degree of ethoxylation of about 5 to about 20.
  • the fatty alcohol, fatty acid and fatty alcohol are preferably linear.
  • the skin care agent 18 includes an antistatic agent, an antioxidant, a pH adjuster, a smoothing agent, an emulsifier, an antibacterial agent, as long as the property of becoming a semi-solid or solid at 20 ° C. is not impaired.
  • flavor, etc. can also be mix
  • the manufacturing method of this embodiment is a manufacturing method of the disposable diaper which manufactures continuously the disposable diaper 1A which is an example of the absorbent article by which the skin care agent 18 was apply
  • the longitudinal direction (Y direction) and the transport direction (y direction) of the disposable diaper 1A are the same direction, and the width direction (X direction) is a direction orthogonal to the transport direction (y direction), and is the Z direction in the figure. These are the thickness directions of the disposable diaper continuous body 100 to convey.
  • the disposable diaper manufacturing apparatus 2 ⁇ / b> A used for carrying out the manufacturing method of the fifth embodiment has a skin care agent 18 in a disposable diaper continuous body 100 in which a disposable diaper 1 ⁇ / b> A having a top sheet 10 is continuous in the longitudinal direction.
  • Device 4 in a molten state cooling means 5 for cooling the applied skin care agent 18 with fluid, folding means 6 for folding the disposable diaper continuous body 100 to which the skin care agent 18 is applied, and folding
  • a pressurizing means 7 for applying a crease to the disposable diaper continuous body 100 and a cutting means 8 for cutting the disposable diaper continuous body 100 for each disposable diaper 1A are provided.
  • a roll 9 and 10 is a part of a transport roll that transports the disposable diaper continuous body 100 in the disposable diaper manufacturing apparatus 2A.
  • a roll 3a illustrated in FIG. 10 is a roll that integrates the top sheet 10, the back sheet 11, the absorbent body 12, and the side sheet 13 in the disposable diaper manufacturing apparatus 2A.
  • the roll 3a is a nip roll comprising a pair of rolls as shown in FIG. Further, as shown in FIG. 10, the roll 3 which is a part of the transport roll is a nip type feed roll made up of a pair of rolls, and is arranged on the downstream side of the roll 3a.
  • a feed roll in addition to the nip type feed roll, a general omega type feed roll in which the rolls are arranged in an omega shape, a feed roll with an increased surface friction of the roll, or the like can be used.
  • the coating device 4 is disposed on the downstream side of the roll 3 and on the upper side (the upper position in the Z direction) of the disposable diaper continuous body 100 side.
  • the coating apparatus 4 supplies a nozzle 41 that discharges the skin care agent 18 to the tip of the coating apparatus 4 and supplies the melted skin care agent 18 to the inside of the coating apparatus 4 by compressed air.
  • a passage (not shown) and a supply tank (not shown) are connected to each other, and a melting tank (not shown) for melting the semi-solid or solid skin care agent 18 at 20 ° C. is provided.
  • the skin care agent 18 is applied to the top sheet 10 of the disposable diaper continuous body 100 from the outer surface side by the coating device 4.
  • the coating device 4 is configured to apply the melted skin care agent 18 in the form of fine particles to a target portion of the top sheet 10, for example, between a pair of three-dimensional gathers at the free ends of a three-dimensional gather. From the viewpoint of uniformly applying to a portion of the surface sheet positioned between them, spray coating with hot air of 50 ° C. or higher is preferable, and spray coating with hot air of 60 ° C. or higher is more preferable.
  • the temperature of warm air means the temperature of air when the skin care agent 18 in a melted state is discharged from the nozzle 41 of the coating device 4.
  • the skin care agent 18 applied by the application device 4 is not particularly limited in the application basis weight, but from the viewpoint of the influence on the absorption performance of the absorbent body 12, the skin care effect, the texture, etc., 0.1 to 2.0 g / It is preferably in the range of m 2 , and more preferably in the range of 0.2 to 1.0 g / m 2 .
  • This application amount can be obtained from the weight difference between the application object before and after applying the skin care agent 18.
  • the distance between the nozzle 41 of the coating device 4 and the top sheet 10 of the continuous disposable diaper 100 to be transported is preferably 1 mm to 200 mm. More preferably, it is 10 mm to 100 mm.
  • the skin care agent 18 is apply
  • the cooling means 5 includes a transport means 51 that cools by the air flow when transporting the disposable diaper continuous body 100, and a blower means 52 that is arranged on the downstream side of the coating apparatus 4 and blows air. It is equipped with.
  • the air blowing means 52 is disposed in front of a folding plate 61 (to be described later) that folds the disposable diaper continuous body 100 on the surface sheet 10 side to which the skin care agent 18 is applied. ing.
  • the folding means for first folding the disposable diaper continuous body 100 on the surface sheet 10 side to which the skin care agent 18 is applied is the folding plate 61, but on the upstream side of the folding plate 61. If there is a facility for folding the skin care agent 18 on the surface sheet 10 side, the blowing means 52 is disposed in front of the facility.
  • the transport means 51 that air-cools the applied skin care agent 18 is a transport roll that includes the above-described roll 3 that transports the disposable diaper continuum 100, and is relative to the disposable diaper during transport. From the viewpoint of cooling and solidifying the skin care agent directly using the air generated in the skin, it is preferable to transport the disposable diaper continuous body 100 at a speed of 80 m / min or more by a transport roll, and at a speed of 100 m / min or more. More preferably, it is conveyed.
  • the air blowing means 52 is a device that solidifies the skin care agent 18 applied by blowing air to the surface sheet 10 side of the disposable diaper continuum 100.
  • a suction box (not shown) is provided at a position facing the blowing means 52 with the disposable diaper continuous body 100 interposed therebetween.
  • the air blown by the blowing means 52 may be sucked with a suction box (not shown) to cool the disposable diaper continuous body 100 in the thickness direction (downward in the Z direction).
  • the suction step the air flows through in the thickness direction of the topsheet 10 by suction from the suction box, so that the cooling efficiency is increased.
  • the cooling air can easily pass through because it is separated from the absorber 12 and can be cooled efficiently.
  • the skin care agent 18 applied by suction is more likely to enter the constituent fibers of the surface sheet 10 and is less likely to adhere to unnecessary parts of the absorbent article (disposable diaper 1A), and melts at body temperature when used. 10 can ooze out and give a sufficient skin care effect to the body.
  • the skin care agent 18 when using a non-woven fabric having a concavo-convex structure as the surface sheet 10, the skin care agent 18 is carried into the convex portion by being strongly sucked in the suction box, and is cooled and solidified without being absorbed by the absorbent body 12.
  • a relatively large amount of the skin care agent 18 can be carried on the top sheet 10, and it is more difficult to adhere to unnecessary parts of the absorbent article (disposable diaper 1A).
  • dissolved gradually with body temperature is supplied to a wearer, the effect of a skin care agent can be given for a long time.
  • air is blown in the blowing means 52 from the viewpoint of maintenance performance such as cost, periodic maintenance of the supply apparatus and apparatus contamination, but in addition to air, gas, water, etc.
  • a fluid may be ejected.
  • the blowing means The air blown by 52 may be cooled by sucking it with a suction box so that air flows in the thickness direction of the precursor of the disposable diaper continuous body 100 (downward in the Z direction). Thereafter, the backsheet 11 may be integrated with the precursor of the disposable diaper continuum 100 coated with the skin care agent 18 with a feed roll to form the disposable diaper continuum 100.
  • the air blowing means 52 is provided with a nozzle (not shown) on the top (upper position in the Z direction) of the top sheet 10 to which the skin care agent 18 is applied.
  • the distance between the nozzle (not shown) and the top sheet 10 of the continuous disposable diaper 100 to be conveyed is 1 mm to 200 mm. It is preferably 10 mm to 100 mm.
  • the amount of air blown from a nozzle (not shown) is preferably 0.1 to 10 m 3 / min, and more preferably 1 to 5 m 3 / min.
  • the pressure of air blown from a nozzle is preferably 0.01 to 1.0 MPa, and more preferably 0.1 to 0.5 MPa.
  • the outlet speed of air blown from a nozzle is preferably 1 to 100 mm / s, and more preferably 10 to 50 mm / s.
  • the temperature of the air to be blown is preferably lower than the melting point of the skin care agent 18, more preferably 10 ° C. or more lower than the melting point, and particularly preferably 20 ° C. or lower lower than the melting point.
  • the negative pressure when sucking air with a suction box is preferably 0.01 to 1.0 MPa from the viewpoint of collecting and evenly applying the mist skin care agent 18 to the absorbent article, More preferably, the pressure is 0.1 to 0.5 MPa.
  • the folding means 6 first folds the disposable diaper continuous body 100 to which the skin care agent 18 is applied on the surface sheet 10 side. It is arranged downstream.
  • the folding means 6 includes a pair of folding plates 61 and 61 provided on both side portions 100 a and 100 a in the transport direction (y direction) of the disposable diaper continuous body 100.
  • the pair of folding plates 61, 61 is a metal plate such as an aluminum alloy or steel, and as shown in FIG. 9, the distance between the upstream and downstream sides in the transport direction (y direction) is as shown in FIG. It is arranged to gradually narrow.
  • the pressurizing unit 7 is arranged on the downstream side of the folding unit 6 and includes a nip type pressurizing roll including a pair of rolls 71.
  • the pair of pressure rolls 71 is disposed across the width direction (X direction) of the disposable diaper continuous body 100.
  • the cutting means 8 is arranged on the downstream side of the pressurizing means 7, and has a cutting roll 81 having a blade 82 arranged over the width direction (X direction) of the disposable diaper continuous body 100. And a flat roll (not shown) at a position facing the blade of the cut roll 81.
  • the continuum of the top sheet 10 and the continuum of the back sheet 11 are fixed so as to sandwich a plurality of absorbers 12, 12... Intermittently supplied in the transport direction (y direction).
  • the elastic members 14 for forming leg gathers (not shown in FIG. 10) are extended in the transport direction (y direction) along both sides of the transport direction (y direction) It fixes between the sheet
  • the continuous body of the side sheet 13 is fixed according to a conventional method along each of both side portions in the conveyance direction (y direction) of the continuous body. A pair of nip rolls 3a is used for the fixing.
  • the elastic member 15 for forming a three-dimensional gather is extended in the transport direction (y direction).
  • the disposable diaper 1 ⁇ / b> A is continuous in the transport direction (y direction) by disposing the fastening tape 16 and the landing tape 17 at predetermined positions and performing leg cutting at the predetermined positions before the coating device 4 described later.
  • the disposable diaper continuous body 100 is manufactured (see FIG. 10). As shown in FIG. 9, the disposable diaper continuous body 100 is transported in the y direction by a transport roll including part of the roll 3.
  • topsheet 10 is a nonwoven fabric having a concavo-convex structure as shown in FIG. 8, for example, an embossing roll provided with a convex portion corresponding to the joint portion 103 on the peripheral surface, and the convex portion is in a state of being bitten.
  • a continuous body of the topsheet 10 having a concavo-convex structure can be formed by supplying and joining the upper layer nonwoven fabric 101 continuous body and the lower layer nonwoven fabric 102 continuous body between the rolls.
  • the skin care agent 18 is applied to the top sheet 10 of the disposable diaper continuum 100 in a melted state from the outer surface side by the coating device 4 located on the downstream side of the roll 3 (application).
  • Step D) the melted skin care agent 18 is spray-coated by the coating device 4 with warm air of a predetermined temperature or higher.
  • the skin care agent 18 is applied to a region inside the edge inward in the width direction (X direction) of each continuous body of the pair of side sheets 13, 13, and is a disposable diaper continuous body 100 is continuously applied to one surface of the top sheet 10 in the transport direction (y direction).
  • the skin care agent 18 is applied on the top sheet 10 so as not to be applied to the water-repellent side sheet 13 that forms the three-dimensional gather of the disposable diaper 1A.
  • the skin care agent 18 may be intermittently apply
  • the skin care agent 18 is apply
  • the applied skin care agent 18 is cooled with a fluid on the surface sheet 10 side of the disposable diaper continuous body 100 (cooling step). E).
  • the surface sheet 10 to which the skin care agent 18 is applied is used by using the air blowing means 52 disposed between the coating device 4 and the folding means 6.
  • air is blown from the outer surface side of the top sheet 10 to solidify the applied skin care agent 18.
  • the blowing means 52 used in the fifth embodiment blows air in the thickness direction (downward in the Z direction) of the disposable diaper continuous body 100.
  • the disposable diaper continuous body 100 is moved at a predetermined speed or more in the transport direction (Y direction) by the transport means 51 (the transport roll including the roll 3).
  • the skin care agent 18 applied and cooled is cooled (air cooled) by an air flow.
  • the existing skin care agent 18 can be solidified, it becomes more difficult to adhere to unnecessary parts of the absorbent article (disposable diaper 1A).
  • the applied skin care agent 18 is cooled using not only the air blowing means 52 but also the conveying means 51, but any of the air blowing means 52 and the conveying means 51 is used. You may cool using only one of these means.
  • the pair of folding plates 61 and 61 located on the downstream side of the air blowing means 52 causes the disposable diaper continuous body 100 to be disposed on both sides 100a and 100a in the transport direction (y direction).
  • the absorbent body 12 of the body 100 is folded toward the top sheet 10 toward the center in the width direction (X direction) starting from the vicinity of both side edges 12a, 12a in the transport direction (y direction) of the absorbent body 100.
  • the folded disposable diaper continuum 100 on both side portions 100a, 100a is supplied between a pair of pressure rolls 71, 71 located downstream of the pair of folding plates 61, 61. By doing so, a crease is imparted to the folded state of both side portions 100a, 100a.
  • the folded disposable diaper continuum 100 on both side portions 100a, 100a is supplied between the cut roll 81 and the flat roll located on the downstream side of the pair of pressure rolls 71, 71. And the disposable diaper continuous body 100 is cut
  • the disposable diaper 1A in a folded state on both sides is further folded in approximately half at the substantially central portion in the longitudinal direction (Y direction), and in the longitudinal direction (Y direction).
  • a pair of pressure rolls 72 and 72 are provided.
  • 1A of disposable diapers which maintained the state folded further compactly can be manufactured continuously by passing through these processes.
  • points that are not particularly described can be manufactured in the same manner as the conventional manufacturing method of a so-called longitudinal flow type disposable disposable diaper.
  • the applied skin care agent 18 is applied to the surface sheet of the disposable diaper continuous body 100. Since the cooling process E which cools the 10 side with the fluid is provided, the applied skin care agent 18 is solidified on the top sheet 10 before the folding plate 61 that first folds the disposable diaper continuous body 100. Therefore, it is difficult for the skin care agent 18 solidified on the topsheet 10 to migrate to both side portions 100a, 100a of the disposable diaper continuous body 100 folded by the folding plate 61.
  • the top sheet 10 is solidified on both side portions 100a and 100a of the disposable diaper continuous body 100.
  • Skin care agent 18 is difficult to migrate.
  • the side sheet 13 forming the three-dimensional gathers on both sides of the disposable diaper 1A is generally made of a water-repellent material, and when the skin care agent 18 is hydrophilic, hydrophilic skin care. If the agent 18 adheres to the three-dimensional gather, it becomes impossible to prevent the side leakage of the body fluid.
  • the skin care agent 18 is applied only to the surface sheet 10 that touches the skin while making it difficult for the skin care agent 18 to be transferred to a portion where the disposable diaper 1A is not required (for example, three-dimensional gathers on both sides of the disposable diaper 1A).
  • the disposable diaper 1A can be manufactured efficiently and continuously.
  • the applied skin care agent 18 is cooled using the conveying means 51 (conveying roll including the roll 3) and the air blowing means 52. It is easy to solidify on the top sheet 10. Therefore, the disposable diaper 1A in which the skin care agent 18 is applied only to the top sheet 10 is more difficult to move to a site where the skin care agent 18 does not require the disposable diaper 1A (for example, three-dimensional gathers on both sides of the disposable diaper 1A). Further, it can be continuously produced more efficiently.
  • the manufacturing method of the disposable diaper of this invention is demonstrated, referring drawings based on the preferable 6th embodiment.
  • the disposable diaper manufactured according to the sixth embodiment will be described in the same manner as the disposable diaper 1A manufactured according to the fifth embodiment.
  • the disposable diaper manufacturing apparatus 2B used for the implementation of the manufacturing method of the sixth embodiment is similar to the disposable diaper manufacturing apparatus 2A used for the implementation of the manufacturing method of the fifth embodiment, as shown in FIG.
  • the disposable diaper 1A having a coating device 4 for applying the skin care agent 18 in a melted state to the disposable diaper continuous body 100 in which the disposable diaper 1A is continuous in the longitudinal direction, and cooling means 5 for cooling the applied skin care agent 18 with a fluid (conveyance) Means 51 and blower means 52).
  • the coating device 4 of the disposable diaper manufacturing apparatus 2B further includes a tunnel 42 through which the disposable diaper continuous body 100 passes.
  • the applicator 4 of the disposable diaper manufacturing apparatus 2 ⁇ / b> B includes a tunnel 42 through which the disposable diaper continuous body 100 passes, and the skin care agent 18 is applied to the disposable diaper continuous body 100 in the tunnel 42. Is done. Even if the set temperature in the tunnel 42 is set to a low spray temperature to prevent decomposition of the skin care agent, for example, the fluidity and absorbent article (surface sheet) of the skin care agent 18 applied to the top sheet 10 10) A viewpoint that ensures adhesion to 10) and allows the skin care agent 18 to solidify and fix as soon as possible when the absorbent article sprayed with the skin care agent 18 at a certain low temperature is transported out of the tunnel.
  • solidification temperature of the applied skin care agent -20 ° C to (solidification temperature of the applied skin care agent 18 + 20 ° C), preferably (solidification temperature of the applied skin care agent 18 -10) More preferably, it is in the range of (° C.) to (solidification temperature of applied skin care agent 18 + 10 ° C.).
  • the disposable diaper continuous body 100 in which the disposable diaper 1A is continuous in the transport direction (y direction) is manufactured.
  • the skin care agent 18 is applied to the top sheet 10 of the disposable diaper continuous body 100 in a melted state from the outer surface side by the coating device 4 located on the downstream side of the roll 3 (coating step D).
  • the skin care agent 18 in a melted state is spray-coated on the top sheet 10 from the outer surface side from the coating device 4 disposed in the tunnel 42.
  • the applied skin care agent 18 is continuously applied to the disposable diaper in the same manner as in the manufacturing method of the disposable diaper 1A of the fifth embodiment.
  • the top sheet 10 side of the body 100 is cooled with a fluid (cooling step E).
  • the blowing means 52 of the disposable diaper manufacturing apparatus 2B is arranged above the coating apparatus 4 (upward position in the Z direction), unlike the position of the blowing means 52 of the disposable diaper manufacturing apparatus 2A. Has been.
  • the transport position of the disposable diaper continuous body 100 is also displaced upward (position in the Z direction).
  • the disposable diaper 1A can be manufactured through the same steps as the manufacturing method of the disposable diaper 1A of the fifth embodiment.
  • the applied skin care is applied. Since the cooling process of cooling the agent 18 with a fluid is provided, the skin care agent 18 is difficult to be transferred to a portion where the disposable diaper 1A is not required (for example, three-dimensional gathers on both sides of the disposable diaper 1A).
  • the disposable diaper 1A in which the skin care agent 18 is applied only to the surface sheet 10 to be touched can be efficiently and continuously manufactured.
  • the skin care agent 18 is spray-coated on the top sheet 10 from the outer surface side by the coating device 4 disposed in the tunnel 42. The skin care agent 18 can be prevented from being scattered outside the tunnel 42, and the contamination of the disposable diaper manufacturing apparatus 2B by the skin care agent 18 can be minimized.
  • the temperature inside the tunnel 42 is the warm air when the skin care agent 18 is applied by the coating device 4. Due to the influence, the temperature is kept higher than the temperature outside the tunnel 42. Accordingly, the setting temperature can be lowered to a temperature at which the fluidity of the skin care agent 18 applied to the topsheet 10 can be secured, and the skin care agent 18 can be applied by the application device 4. The temperature of the applied skin care agent 18 is easily lowered by the cooling means 5, and the applied skin care agent 18 is easily solidified on the top sheet 10. Moreover, according to the manufacturing method of the sixth embodiment, since the tunnel 42 is provided, the skin care agent 18 is easily solidified because the temperature difference between the inside and outside of the tunnel 42 is large.
  • the manufacturing method of the disposable diaper of this invention is demonstrated, referring drawings based on the preferable 7th embodiment.
  • the disposable diaper manufactured according to the seventh embodiment will be described in the same manner as the disposable diaper 1A manufactured according to the fifth embodiment.
  • a seventh embodiment of the present invention a preferred manufacturing method of the disposable diaper 1A will be described with reference to FIG.
  • the description in detail regarding the fifth embodiment is applied as appropriate to points that are not particularly described.
  • the disposable diaper manufacturing apparatus 2C used for the implementation of the manufacturing method of the seventh embodiment is similar to the disposable diaper manufacturing apparatus 2A used for the implementation of the manufacturing method of the fifth embodiment, as shown in FIG.
  • the disposable diaper 1A having a coating device 4 for applying the skin care agent 18 in a melted state to the disposable diaper continuous body 100 in which the disposable diaper 1A is continuous in the longitudinal direction, and cooling means 5 for cooling the applied skin care agent 18 with a fluid (conveyance) Means 51 and blower means 52).
  • the cooling means 5 of the disposable diaper manufacturing apparatus 2C includes a conveying means 51 and an air blowing means 52 as in the case of the disposable diaper manufacturing apparatus 2A, but the air blowing means 52 of the disposable diaper manufacturing apparatus 2C is a disposable diaper manufacturing apparatus.
  • the blowing direction is different from that of the 2A blowing means 52.
  • the blowing means 52 of the disposable diaper manufacturing apparatus 2 ⁇ / b> C is arranged on the top sheet 10 of the disposable diaper continuous body 100 from the direction facing the transport direction (y direction) of the disposable diaper continuous body 100 from the outer surface side.
  • the tip of a nozzle (not shown) that blows air is directed in a direction facing the transport direction (y direction) so as to blow air.
  • the air blowing means 52 of the disposable diaper manufacturing apparatus 2 ⁇ / b> C is an application in which air blown in a direction opposite to the conveying direction (y direction) from a nozzle (not shown) discharges the skin care agent 18.
  • the application is performed so as not to disturb the application of the skin care agent 18 from the nozzle 41 and to prevent the skin care agent 18 from being solidified by the nozzle 41. It is arranged above the device 4 (above the Z direction). In accordance with this, the transport position of the disposable diaper continuous body 100 is also displaced upward (position in the Z direction).
  • the blowing means 52 of the disposable diaper manufacturing apparatus 2C illustrated in FIG. (Shown) may be arranged.
  • the blowing means 52 of the disposable diaper manufacturing apparatus 2C illustrated in FIG. (Shown) may be arranged.
  • the blowing means 52 of the disposable diaper manufacturing apparatus 2C illustrated in FIG. (Shown) may be arranged.
  • the blowing means 52 of the disposable diaper manufacturing apparatus 2C illustrated in FIG. (Shown) may be arranged.
  • the blowing means 52 of the disposable diaper manufacturing apparatus 2C illustrated in FIG. (Shown) may be arranged.
  • the blowing means 52 of the disposable diaper manufacturing apparatus 2C illustrated in FIG. (Shown) may be arranged.
  • the disposable diaper continuous body 100 in which the disposable diaper 1A is continuous in the transport direction (y direction) is manufactured.
  • y direction transport direction
  • a transport roll including part of the roll 3 transport direction
  • the skin care agent 18 is melted from the outer surface side to the top sheet 10 of the disposable diaper continuous body 100 by the coating device 4 located on the downstream side of the roll 3. It is applied in the state (application process D).
  • the applied skin care agent 18 is cooled with a fluid on the surface sheet 10 side of the disposable diaper continuous body 100 (cooling step). E).
  • the applied skin care agent 18 is cooled by an air flow by being conveyed at a predetermined speed or more by the conveying means 51 (conveying roll including the roll 3).
  • air blowing means 52 that is solidified by air cooling and is disposed at a position above the coating device 4 in the Z direction and facing a nozzle (not shown) in a direction opposite to the transport direction (y direction)
  • the skin care agent 18 applied by blowing air from the direction facing the conveyance direction (Y direction) is solidified.
  • the air around the convex portion 104 becomes a fluid and passes through the concave portion continuous above the head of the convex portion 104 and its periphery.
  • the disposable diaper continuous By cooling the skin care agent 18 applied by flowing air in the thickness direction (below the Z direction) of the body 100 or its precursor, the air around the convex portion 104 becomes fluid and the head of the convex portion 104 and its The skin care agent 18 can easily enter into the constituent fibers of the nonwoven fabric constituting the topsheet 10 by passing the peripheral continuous concave portions and cooling the convex portions 104 from the surroundings and sucking the air flow from the suction box.
  • the cooling efficiency of the top of the convex portion 104 is improved, and a skin care agent that is present in a large amount on the top of the head Since 18 can be solidified, it becomes more difficult to adhere to unnecessary parts of the absorbent article (disposable diaper 1A).
  • the precursor of the disposable diaper continuous body 100 means the part of the disposable diaper continuous body 100 excluding the back surface sheet 11 described in the cooling method in the case where a moisture-permeable film is used for the back surface sheet 11 described above. To do.
  • the disposable diaper 1A can be manufactured through the same steps as the manufacturing method of the disposable diaper 1A of the fifth embodiment.
  • the manufacturing method of the seventh embodiment similar to the manufacturing method of the fifth embodiment, before the disposable diaper continuous body 100 is first folded on the surface sheet 10 side to which the skin care agent 18 is applied, the applied skin care is applied. Since the cooling process of cooling the agent 18 with a fluid is provided, the skin care agent 18 is difficult to be transferred to a portion where the disposable diaper 1A is not required (for example, three-dimensional gathers on both sides of the disposable diaper 1A). The disposable diaper 1A in which the skin care agent 18 is applied only to the surface sheet 10 to be touched can be efficiently and continuously manufactured. Further, according to the manufacturing method of the seventh embodiment, from the direction facing the transport direction (y direction) using the air blowing means 52 whose nozzle (not shown) faces in the direction facing the transport direction (y direction). Since air is blown, the cooling effect of solidifying the applied skin care agent 18 on the top sheet 10 is improved in combination with the conveyance speed of conveying the disposable diaper continuous body 100 in the y direction by the conveyance means 51.
  • the manufacturing method of the absorbent article of the present invention is not limited to the manufacturing methods of the fifth, sixth, and seventh embodiments described above, and can be changed as appropriate.
  • the disposable diaper 1A manufactured by the manufacturing method according to the fifth, sixth, and seventh embodiments described above is an unfolded disposable diaper, but may be a pants-type disposable diaper, a sanitary napkin, an absorption It may be an absorbent article such as a pad.
  • the skin care agent 18 is apply
  • various methods are used.
  • a coating method a die coater method, a slot spray method, a curtain spray method, a melt blown method, a spiral spray method, a gravure method, a bead method, or the like can be used.
  • Example 1 Using the above-described skin care agent adhesion apparatus 2 (see FIG. 3), 1.0 g / m 2 of the skin care agent was applied to the belt-shaped surface sheet (see FIG. 1) having a concavo-convex structure and cooled. The skin care agent was applied to the uneven side of the surface sheet.
  • As the skin care agent an equal mixture of diamide derivative (BRS) and stearyl alcohol (St-OH) in a mass ratio of 5: 5 was used. The melting point of this skin care agent is 53 ° C.
  • the conveying speed of the top sheet was 50 m / min, and air at a temperature of ⁇ 10 ° C.
  • Comparative Example 1 The comparative example 1 performed the process similarly to Example 1 except not cooling in Example 1.
  • FIG. The amount of adhesion to the roll after the predetermined time treatment (after 3 minutes and 30 minutes) was measured in the same manner, and the results are shown in Table 1.
  • Comparative Example 2 In Comparative Example 2, the treatment was performed in the same manner as in Example 2 except that cooling after coating was not performed in Example 2. That is, in Comparative Example 2, only preliminary cooling is performed as the cooling process. The amount of adhesion to the roll after the predetermined time treatment (after 3 minutes) was measured in the same manner, and the results are shown in Table 1.
  • Comparative Example 3 In Comparative Example 3, a roll having a good releasability having a surface coated with a fluororesin was used as the roll 44. Otherwise, the treatment was performed in the same manner as in Comparative Example 1, and the amount of adhesion to the roll after the predetermined time treatment (after 3 minutes) was measured in the same manner as in Comparative Example 1, and the results are shown in Table 1.
  • Example 1 As is clear from the results of Example 1 and Comparative Example 1 shown in Table 1, the amount of adhesion to the roll when the surface sheet coated with the skin care agent was cooled (Example 1) was cooled after 30 minutes. It was found that the amount of adhesion to the roll in the case of not performing (Comparative Example 1) was remarkably small, and Example 1 in which the top sheet was cooled was found to have an effect of making it difficult to stain the transport equipment. As is clear from the results of Example 1 and Comparative Example 1 shown in Table 1, it was found that the above-described effect of hardly contaminating the transfer equipment appears even after 3 minutes.
  • an absorbent article in which a skin care agent is applied to a part of a constituent sheet is made difficult to attach a skin care agent to a conveyance facility, and the conveyance facility is hardly contaminated. It can be manufactured continuously well. Furthermore, it is possible to make it difficult to transfer the skin care agent to a site where the absorbent article is not required.
  • an absorbent article of the present invention it is difficult to transfer the skin care agent to a site where the absorbent article is not necessary, and the absorbent article having the skin sheet coated on the topsheet is efficiently and continuously produced. Can be manufactured automatically.

Abstract

A method for continuously manufacturing absorptive articles each comprising a surface sheet (10), to a part of which a skin care agent is applied, the surface sheet (10) being an example of a constituent sheet. The skin care agent is semi-solid or solid at 20°C. The manufacturing method is provided with: an application step (D) for applying the skin care agent in a molten state to one surface of a surface sheet (100) which is a band-like constituent sheet; and a cooling step which, before the skin care agent applied to said surface of the surface sheet (100), which is a band-like constituent sheet, makes contact with a conveyance facility for conveying the surface sheet (100), cools the applied skin care agent from said surface side of the surface sheet (100) by means of fluid.

Description

吸収性物品の製造方法Method for manufacturing absorbent article
　本発明は、構成材料にスキンケア剤が塗布された吸収性物品を連続的に製造する吸収性物品の製造方法に関する。 The present invention relates to an absorbent article manufacturing method for continuously manufacturing an absorbent article in which a skin care agent is applied to a constituent material.
　従来、表面シート等に、スキンケア効果を有するスキンケア剤を塗布した使い捨ておむつが知られている。例えば、特許文献１には、前述のような使い捨ておむつとして、吸収性物品の表面シートに、スキンケア効果を有する植物エキス（スキンケア剤）が施された使い捨ておむつが記載されている。特許文献１に記載の使い捨ておむつは、高吸収性ポリマーの吸収性能を阻害せずに、着用者の皮膚のかぶれ等を効率的に抑制することができる。このようなスキンケア剤が施された使い捨ておむつを連続的に生産する場合、通常のおむつ生産工程において、単にスキンケア剤を塗布すると、スキンケア剤を塗布した後の表面シートが、シートを搬送する搬送設備に接触することにより、搬送設備にスキンケア剤が付着し、搬送設備を汚してしまう。特許文献１には、植物エキスを吸収性物品の所定部位に施す方法について何ら記載されていない。 Conventionally, disposable diapers in which a skin care agent having a skin care effect is applied to a surface sheet or the like are known. For example, Patent Document 1 describes a disposable diaper in which a plant extract (skin care agent) having a skin care effect is applied to a top sheet of an absorbent article as a disposable diaper as described above. The disposable diaper described in Patent Document 1 can efficiently suppress wearer's skin irritation and the like without inhibiting the absorption performance of the superabsorbent polymer. When continuously producing disposable diapers to which such a skin care agent has been applied, in a normal diaper production process, when the skin care agent is simply applied, the top sheet after applying the skin care agent conveys the sheet. The skin care agent adheres to the transport facility by contacting with, and the transport facility is soiled. Patent Document 1 does not describe any method for applying a plant extract to a predetermined part of an absorbent article.
　また、このようなスキンケア剤が施された使い捨ておむつを連続的に生産する場合、通常のおむつ生産工程において、単にスキンケア剤を塗布すると、スキンケア剤を塗布した後の表面シートに、使い捨ておむつの他の構成部材、例えば、立体ギャザー構成部材が接触すると、立体ギャザー構成部材にスキンケア剤が転写されてしまう。転写されたスキンケア剤の種類によっては、立体ギャザーの防漏性を低下させ、使い捨ておむつの使用感が低下する場合がある。特許文献１には、植物エキスを吸収性物品の所定部位に施す方法について何ら記載されていない。 In addition, when continuously producing disposable diapers to which such skin care agents are applied, in the normal diaper production process, simply applying a skin care agent, the surface sheet after applying the skin care agent, and other disposable diapers When a component member, for example, a three-dimensional gather component member, comes into contact, the skin care agent is transferred to the three-dimensional gather component member. Depending on the type of the transferred skin care agent, the leak-proof property of the three-dimensional gather may be lowered, and the feeling of use of the disposable diaper may be lowered. Patent Document 1 does not describe any method for applying a plant extract to a predetermined part of an absorbent article.
　例えば、特許文献２には、スキンケア剤をスプレーで表面シートに塗布した後、スキンケア剤を冷却し固化させる吸収性物品の製造方法について記載されている。また、特許文献３には、ブロワー、ファンなどを用いて、処理されたおむつの脚部カフスの外側を冷却し、固定化剤の結晶化を加速させ得ることが記載されている。 For example, Patent Document 2 describes a method for manufacturing an absorbent article in which a skin care agent is applied to a surface sheet by spraying, and then the skin care agent is cooled and solidified. Patent Document 3 describes that a blower, a fan, or the like can be used to cool the outside of the treated diaper leg cuff and accelerate the crystallization of the fixing agent.
　しかしながら、特許文献２には、スキンケア剤をスプレーで表面シートに塗布する具体的条件については何ら開示されておらず、冷却方法についても具体的に何ら開示されていない。また、特許文献３には、冷却することとその手段は記載されているが、ローションのコーティングと冷却手段の位置関係については具体的な開示がない。 However, Patent Document 2 does not disclose any specific conditions for applying the skin care agent to the surface sheet by spraying, nor does it specifically disclose any cooling method. Patent Document 3 describes cooling and its means, but there is no specific disclosure about the positional relationship between the lotion coating and the cooling means.
特開２００２－４５３９１号公報JP 2002-45391 A 特表平１０－５０９８９６号公報Japanese National Patent Publication No. 10-509896 特開２００１－３１４４４０号公報JP 2001-314440 A
　したがって、本発明は、スキンケア剤が塗布された吸収性物品を、搬送設備にスキンケア剤を付着させ難くするとともに吸収性物品の不必要な部位にスキンケア剤が付着することを防ぎ、搬送設備を汚し難くして、効率よく連続的に製造する吸収性物品の製造方法を提供することにある。 Therefore, the present invention makes it difficult for the skin care agent to adhere to the transport equipment with the absorbent article to which the skin care agent is applied, and prevents the skin care agent from adhering to unnecessary parts of the absorbent article. An object of the present invention is to provide a method for producing an absorbent article that is difficult and efficient to produce continuously.
　また、本発明は、吸収性物品の不必要な部位にスキンケア剤が付着することを防ぎながら、表面シートにスキンケア剤が塗布された吸収性物品を、効率よく連続的に製造する吸収性物品の製造方法を提供することにある。 Further, the present invention provides an absorbent article for efficiently and continuously producing an absorbent article having a skin care agent applied to a surface sheet while preventing the skin care agent from adhering to unnecessary parts of the absorbent article. It is to provide a manufacturing method.
　本発明は、構成シートにスキンケア剤が塗布された吸収性物品を連続的に製造する吸収性物品の製造方法でる。前記スキンケア剤は、２０℃で半固体又は固体のものである。前記スキンケア剤を溶融させた状態で帯状の構成シートの一面に塗布する塗布工程と、前記帯状の構成シートの一面に塗布された前記スキンケア剤が、該帯状の構成シートを搬送する搬送設備に接触する前に、塗布された前記スキンケア剤を前記帯状の構成シートの一面側から流体で冷却する冷却工程とを具備する。 The present invention is a method for manufacturing an absorbent article in which an absorbent article in which a skin care agent is applied to a constituent sheet is continuously manufactured. The skin care agent is semi-solid or solid at 20 ° C. An application step of applying the skin care agent to one side of the belt-shaped constituent sheet in a molten state, and the skin care agent applied to one side of the belt-like constituent sheet contacts a transport facility for transporting the belt-shaped constituent sheet Before the coating, the applied skin care agent is cooled with a fluid from one side of the belt-shaped component sheet.
　また、本発明は、表面シートにスキンケア剤が塗布された吸収性物品を連続的に製造する吸収性物品の製造方法である。前記スキンケア剤は、２０℃で半固体又は固体のものである。前記表面シートを有する前記吸収性物品が長手方向に連続した吸収性物品連続体の前記表面シートに、その外面側から前記スキンケア剤を溶融させた状態で塗布する塗布工程と、前記スキンケア剤の塗布された前記表面シート側に前記吸収性物品連続体を折り畳む前に、塗布された前記スキンケア剤を前記吸収性物品連続体の前記表面シート側を流体で冷却する冷却工程とを具備する。 Further, the present invention is a method for producing an absorbent article, in which an absorbent article in which a skin care agent is applied to a top sheet is continuously produced. The skin care agent is semi-solid or solid at 20 ° C. An application step of applying the skin care agent in a melted state from the outer surface side to the surface sheet of the absorbent article continuum in which the absorbent article having the surface sheet is continuous in the longitudinal direction, and application of the skin care agent A cooling step of cooling the applied skin care agent with a fluid on the surface sheet side of the absorbent article continuum before folding the absorbent article continuum on the surface sheet side.
図１は、本発明の第１実施態様により得られる使い捨ておむつを一部破断して示す平面図である。FIG. 1 is a plan view illustrating a disposable diaper obtained by the first embodiment of the present invention with a part thereof broken. 図２は、図１に示す使い捨ておむつに用いられる好ましい表面シートの斜視図である。FIG. 2 is a perspective view of a preferred topsheet used in the disposable diaper shown in FIG. 図３は、本発明の第１実施態様により図１に示す使い捨ておむつの表面シートにスキンケア剤を付着する概略工程図である。FIG. 3 is a schematic process diagram for attaching a skin care agent to the top sheet of the disposable diaper shown in FIG. 1 according to the first embodiment of the present invention. 図４は、本発明の第２実施態様により図１に示す使い捨ておむつの表面シートにスキンケア剤を付着する概略工程図である。FIG. 4 is a schematic process diagram for attaching a skin care agent to the top sheet of the disposable diaper shown in FIG. 1 according to the second embodiment of the present invention. 図５は、本発明の第３実施態様により図１に示す使い捨ておむつの表面シートにスキンケア剤を付着する概略工程図である。FIG. 5 is a schematic process diagram for attaching a skin care agent to the top sheet of the disposable diaper shown in FIG. 1 according to the third embodiment of the present invention. 図６は、本発明の第４実施態様により図１に示す使い捨ておむつの表面シートにスキンケア剤を付着する概略工程図である。FIG. 6 is a schematic process diagram for attaching a skin care agent to the top sheet of the disposable diaper shown in FIG. 1 according to the fourth embodiment of the present invention. 図７は、本発明の第５実施態様により得られる使い捨ておむつを一部破断して示す平面図である。FIG. 7 is a plan view showing the disposable diaper obtained by the fifth embodiment of the present invention with a part thereof broken. 図８は、図７に示す使い捨ておむつに用いられる好ましい表面シートの斜視図である。FIG. 8 is a perspective view of a preferred topsheet used in the disposable diaper shown in FIG. 図９は、本発明の第５実施態様の製造方法の実施に用いられる使い捨ておむつ製造装置の概略図である。FIG. 9 is a schematic view of a disposable diaper manufacturing apparatus used for carrying out the manufacturing method of the fifth embodiment of the present invention. 図１０は、図９に示す使い捨ておむつ製造装置の一部を側面から見た概略図である。FIG. 10 is a schematic view of a part of the disposable diaper manufacturing apparatus shown in FIG. 9 as viewed from the side. 図１１は、本発明の第６実施態様の製造方法の実施に用いられる使い捨ておむつ製造装置の一部を側面から見た概略図である。FIG. 11: is the schematic which looked at a part of disposable diaper manufacturing apparatus used for implementation of the manufacturing method of the 6th embodiment of this invention from the side surface. 図１２は、本発明の第７実施態様の製造方法の実施に用いられる使い捨ておむつ製造装置の一部を側面から見た概略図である。FIG. 12: is the schematic which looked at a part of disposable diaper manufacturing apparatus used for implementation of the manufacturing method of the 7th embodiment of this invention from the side surface. 図１３、本発明の他の実施態様の製造方法の実施に用いられる使い捨ておむつ製造装置の一部を側面から見た概略図である。FIG. 13 is a schematic view of a part of a disposable diaper manufacturing apparatus used for carrying out the manufacturing method of another embodiment of the present invention as viewed from the side.
発明の詳細な説明Detailed Description of the Invention
　以下、本発明の吸収性物品の製造方法を、その好ましい第１実施態様に基づき図面を参照しながら説明する。
　第１実施態様で製造する一例としての使い捨ておむつ１は、図１に示すように、液透過性の表面シート１０、液不透過性又は撥水性の裏面シート１１及びこれら両シート間に配置された液保持性の吸収体１２を備えている。
　また、使い捨ておむつ１は、図１に示すように、その長手方向（図中のＹ方向）に、着用時に着用者の背中側に配される背側部Ａ、股間部に配される股下部Ｃ及び腹側に配される腹側部Ｂを有している。
　図１に示すように、使い捨ておむつ１の長手方向（Ｙ方向）の両側それぞれには、撥水性不織布からなるサイドシート１３が、表面シート１０の両側部を覆うように配されている。表面シート１０及び各サイドシート１３は、吸収体１２の周縁より外方において、裏面シート１１に接合されている。吸収体１２の幅方向（図中のＸ方向）外方のレッグフラップ部には、レッグギャザー形成用の弾性部材１４が配されており、上述したサイドシート１３のおむつ幅方向（Ｘ方向）中央側の側縁には、立体ギャザー形成用の弾性部材１５が配されている。 Hereinafter, the manufacturing method of the absorbent article of this invention is demonstrated, referring drawings based on the preferable 1st embodiment.
As shown in FIG. 1, the disposable diaper 1 as an example manufactured in the first embodiment is disposed between a liquid-permeable top sheet 10, a liquid-impermeable or water-repellent back sheet 11, and both the sheets. A liquid-retaining absorber 12 is provided.
In addition, as shown in FIG. 1, the disposable diaper 1 has, in its longitudinal direction (Y direction in the figure), a back side portion A disposed on the wearer's back side when worn and a crotch portion disposed on the crotch portion. C and a ventral side B arranged on the ventral side.
As shown in FIG. 1, side sheets 13 made of a water-repellent nonwoven fabric are disposed on both sides of the disposable diaper 1 in the longitudinal direction (Y direction) so as to cover both side portions of the topsheet 10. The top sheet 10 and each side sheet 13 are joined to the back sheet 11 outside the periphery of the absorber 12. An elastic member 14 for forming leg gathers is disposed on the outer leg flap portion of the absorbent body 12 in the width direction (X direction in the figure), and the diaper width direction (X direction) center of the side seat 13 described above An elastic member 15 for forming a three-dimensional gather is disposed on the side edge on the side.
　図１に示すように、使い捨ておむつ１は、いわゆる展開型のおむつであり、背側部Ａの長手方向（Ｙ方向）の両側縁部それぞれに設けられたファスニングテープ１６，１６を、腹側部Ｂの外面に設けられたランディングテープ１７に止着することにより、身体に装着して使用する。なお、裏面シート１１、吸収体１２、サイドシート１３、ファスニングテープ１６、ランディングテープ１７、弾性部材１４，１５としては、それぞれ、この種の物品に使用されているものを特に制限なく使用することができる。吸収体１２としては、パルプ繊維等の繊維材料からなる繊維集合体又はこれに吸水性ポリマーの粒子等を保持したものを、ティッシュペーパや透水性の不織布で被覆してなるもの等を用いることができる。 As shown in FIG. 1, the disposable diaper 1 is a so-called unfolded diaper. Fastening tapes 16, 16 provided on both side edges in the longitudinal direction (Y direction) of the back side A are connected to the ventral side part. By attaching to the landing tape 17 provided on the outer surface of B, it is worn on the body and used. In addition, as the back sheet 11, the absorbent body 12, the side sheet 13, the fastening tape 16, the landing tape 17, and the elastic members 14 and 15, those used for this type of article can be used without any particular limitation. it can. As the absorbent body 12, a fiber aggregate made of a fiber material such as pulp fiber, or a substance obtained by covering the fiber aggregate with water absorbent polymer particles, etc., with tissue paper or a water-permeable nonwoven fabric may be used. it can.
　使い捨ておむつ１の表面シート１０としては、不織布やそれに多数の開孔を形成したもの、多数の開孔を形成したフィルム等を用いることができ、後述するスキンケア剤を保持する観点から、多層構造の不織布や凹凸構造の不織布を用いることが好ましい。 As the surface sheet 10 of the disposable diaper 1, a non-woven fabric, a material having a large number of apertures formed thereon, a film having a large number of apertures, etc. can be used. It is preferable to use a nonwoven fabric or a nonwoven fabric with an uneven structure.
　凹凸構造の表面シート１０としては、具体的には、図２に示すように、使い捨ておむつ１の肌当接面（着用者の肌側に向けられる面）を形成する上層不織布１０１と、吸収体１２側に向けられる面を形成する下層不織布１０２とからなる２層構造の積層不織布が挙げられ、凹凸構造の表面シート１０は、上層不織布１０１と下層不織布１０２とを多数の接合部１０３にて部分的に接合して形成される。上層の不織布１０１は、接合部１０３以外の部分において着用者の肌側に向けて突出しており、内部が空洞となっている多数の凸部１０４を形成している。図２に示すように、凸部１０４及び接合部１０３は、交互に、且つＸ方向及びＹ方向に多列をなすように配置されている。上層不織布１０１及び下層不織布１０２は、実質的に伸縮しない不織布からなる。図２に示すように、凸部１０４は、全体として稜線が丸みを帯びた扁平な直方体又は截頭四角錐体となっており、一方、接合部１０３は矩形となっている。図中のＹ方向は、後述する帯状の表面シート１００の搬送方向と一致し、また表面シート１０が使い捨ておむつ１（吸収性物品）に組み込まれたときの該吸収性物品の長手方向とも一致している。凹凸構造の表面シート１０としては、図２に示すシート以外に、特開２００２－１８７２２８号公報、特開２００４－３４５３５７号公報、特開２００４－２７５２９６号公報に記載のシート等を用いることもできる。 Specifically, as the topsheet 10 of the concavo-convex structure, as shown in FIG. 2, an upper layer nonwoven fabric 101 that forms a skin contact surface of the disposable diaper 1 (a surface directed toward the wearer's skin), and an absorbent body A laminated nonwoven fabric having a two-layer structure composed of a lower layer nonwoven fabric 102 that forms a surface directed toward the 12 side can be mentioned. Are joined together. The non-woven fabric 101 of the upper layer protrudes toward the wearer's skin side at a portion other than the joint portion 103, and forms a large number of convex portions 104 that are hollow inside. As shown in FIG. 2, the convex portions 104 and the joint portions 103 are arranged alternately and in multiple rows in the X direction and the Y direction. The upper layer nonwoven fabric 101 and the lower layer nonwoven fabric 102 are made of a nonwoven fabric that does not substantially expand and contract. As shown in FIG. 2, the convex portion 104 is a flat rectangular parallelepiped or truncated quadrangular pyramid whose ridgeline is rounded as a whole, while the joint portion 103 is rectangular. The Y direction in the figure coincides with the conveyance direction of the band-shaped topsheet 100 described later, and also coincides with the longitudinal direction of the absorbent article when the topsheet 10 is incorporated in the disposable diaper 1 (absorbent article). ing. As the surface sheet 10 having the concavo-convex structure, in addition to the sheet shown in FIG. 2, the sheets described in JP-A-2002-187228, JP-A-2004-345357, and JP-A-2004-275296 can also be used. .
　使い捨ておむつ１の表面シート１０には、着用者の肌側に向けられる面に、着用者の肌に対して所定の効能を有するスキンケア剤が施されている。具体的には、使い捨ておむつ１における表面シート１０の上層不織布１０１に、スキンケア剤が施されている。スキンケア剤は、これを含む塗布液を、上層不織布１０１に塗工することで施されている。使い捨ておむつ１は、表面シート１０にスキンケア剤が施されていることで、着用者の肌のかぶれ、炎症等が効果的に抑制・治癒される。 The skin sheet having a predetermined effect on the skin of the wearer is applied to the surface sheet 10 of the disposable diaper 1 on the surface directed toward the skin of the wearer. Specifically, a skin care agent is applied to the upper nonwoven fabric 101 of the topsheet 10 in the disposable diaper 1. The skin care agent is applied by coating the upper layer nonwoven fabric 101 with a coating liquid containing the skin care agent. In the disposable diaper 1, the skin sheet of the wearer's skin, inflammation, and the like are effectively suppressed and cured by the skin care agent being applied to the top sheet 10.
　スキンケア剤としては、２０℃で半固体又は固体のものが用いられ、着用者の肌に対して、かぶれ、炎症等を抑制・治癒する効能を有するものを特に制限なく用いることができ、例えば、化粧品の分野においてエモリエント剤として用いられているもの等を用いることができる。ここで、半固体とは、外力や熱が加わることによって可塑性（流動性）が出現するものや、外力が加わらなくても可塑性（流動性）を有し、該流動性の低いものから高いものまでが含まれる。２０℃で半固体又は固体のスキンケア剤の具体例としては、石油系炭化水素、動植物性油脂、動植物性ロウ、脂肪酸エステル系化合物、アルキルエトキシレート、脂肪酸エステルエトキシレート、脂肪アルコール、ポリシロキサンが挙げられる。 As a skin care agent, a semi-solid or solid one at 20 ° C. is used, and a skin care agent can be used without particular limitation on those having the effect of suppressing or healing rash, inflammation, etc. What is used as an emollient in the field of cosmetics can be used. Here, the semi-solid means that plasticity (fluidity) appears when external force or heat is applied, or that has plasticity (fluidity) even when no external force is applied, and is low to high fluidity. Up to. Specific examples of the semi-solid or solid skin care agent at 20 ° C. include petroleum hydrocarbons, animal and vegetable oils and fats, animal and vegetable waxes, fatty acid ester compounds, alkyl ethoxylates, fatty acid ester ethoxylates, fatty alcohols, and polysiloxanes. It is done.
　また、各種エモリエント剤として、例えば、ジアミド誘導体（ＢＲＳ）、流動パラフィン、シリコーンオイル、動植物油（オリーブ油、ホオバ油、ベニバナ油、スクワランおよびスクワレン等）、モノグリセライド、ジグリセライド、トリグリセライド、脂肪族エーテル（ミリスチル－１，３－ジメチルブチルエーテル、パルミチル－１，３－ジメチルブチルエーテル、ステアリル－１，３－ジメチルブチルエーテル、パルミチル－１，３－メチルプロピルエーテル、ステアリル－１，３－メチルプロピルエーテル等）、および、イソステアリル－コレステロールエステル等を単独で、或いは２種以上を混合したものに、固定化剤を加えることにより、２０℃で半固体又は固体のスキンケア剤とすることができる。 Examples of various emollients include diamide derivatives (BRS), liquid paraffin, silicone oil, animal and vegetable oils (olive oil, jojoba oil, safflower oil, squalane and squalene, etc.), monoglycerides, diglycerides, triglycerides, aliphatic ethers (myristyl- 1,3-dimethylbutyl ether, palmityl-1,3-dimethylbutyl ether, stearyl-1,3-dimethylbutyl ether, palmityl-1,3-methylpropyl ether, stearyl-1,3-methylpropyl ether, etc.) and iso By adding a fixing agent to stearyl-cholesterol ester alone or a mixture of two or more thereof, a semi-solid or solid skin care agent at 20 ° C. can be obtained.
　固定化剤としては、Ｃ14－Ｃ22脂肪アルコール、Ｃ12－Ｃ22脂肪酸、ならびに、平均のエトキシル化度が２から約３０であるＣ12－Ｃ22脂肪アルコールエトキシレート、およびこれらの混合物からなる群から選ばれた一つの要素が含まれる。好ましい固定化剤には、Ｃ16－Ｃ18脂肪アルコールが含まれ、最も好ましくは、セチルアルコール、ステアリルアルコール、およびこれらの混合物からなる群から選ばれた要素が含まれる。これらのうち、セチルアルコールおよびステアリルアルコールの混合物が特に好ましい。好ましいその他の固定化剤には、Ｃ16－Ｃ18脂肪酸が含まれ、最も好ましくは、パルミチン酸、ステアリン酸、およびこれらの混合物からなる群から選ばれた要素が含まれる。これらのうち、パルミチン酸およびステアリン酸の混合物が特に好ましい。さらに、好ましいその他の固定化剤には、平均のエトキシル化度が約５～約２０であるＣ16－Ｃ18脂肪アルコールエトキシレートが含まれる。脂肪アルコール、脂肪酸および脂肪アルコールは、直鎖であることが好ましい。 The fixing agent, C 14 -C 22 fatty alcohols, C 12 -C 22 fatty acids, as well as degree of ethoxylation average is from 2 to about 30 C 12 -C 22 fatty alcohol ethoxylates, and mixtures thereof Contains one element selected from the group. Preferred immobilizing agents include C 16 -C 18 fatty alcohols, and most preferably include elements selected from the group consisting of cetyl alcohol, stearyl alcohol, and mixtures thereof. Of these, a mixture of cetyl alcohol and stearyl alcohol is particularly preferred. Preferred other immobilizing agents include C 16 -C 18 fatty acids, most preferably elements selected from the group consisting of palmitic acid, stearic acid, and mixtures thereof. Of these, a mixture of palmitic acid and stearic acid is particularly preferred. Further preferred other immobilizing agents include C 16 -C 18 fatty alcohol ethoxylates having an average degree of ethoxylation of about 5 to about 20. The fatty alcohol, fatty acid and fatty alcohol are preferably linear.
　また、スキンケア剤を含む塗布液には、固定化剤の他に、帯電防止剤、酸化防止剤、ｐＨ調整剤、平滑剤、乳化剤、抗菌剤、防黴剤、香料等を配合することもできる。 In addition to the fixing agent, the coating solution containing the skin care agent may contain an antistatic agent, an antioxidant, a pH adjuster, a smoothing agent, an emulsifier, an antibacterial agent, an antifungal agent, a fragrance, and the like. .
　次に、本発明の第１実施態様として、使い捨ておむつ１の好ましい製造方法について図３を参照して説明する。本実施態様の製造方法は、構成シートの一例である表面シート１０の一部にスキンケア剤が塗布された使い捨ておむつ１を連続的に製造する使い捨ておむつ１の製造方法であり、使い捨ておむつ１の作成前に、使い捨ておむつ１を構成する表面シート１０となる帯状の表面シート１００に、スキンケア剤を含む塗布液を塗布する方法である。尚、使い捨ておむつ１の長手方向（Ｙ方向）と搬送方向は同じ方向であり、幅方向（Ｘ方向）とは搬送方向（Ｙ方向）と直交する方向である。 Next, as a first embodiment of the present invention, a preferred manufacturing method of the disposable diaper 1 will be described with reference to FIG. The manufacturing method of this embodiment is a manufacturing method of the disposable diaper 1 which manufactures continuously the disposable diaper 1 by which the skin care agent was apply | coated to a part of surface sheet 10 which is an example of a structural sheet, and creation of the disposable diaper 1 Before, it is the method of apply | coating the coating liquid containing a skin care agent to the strip | belt-shaped surface sheet 100 used as the surface sheet 10 which comprises the disposable diaper 1. FIG. In addition, the longitudinal direction (Y direction) and conveyance direction of the disposable diaper 1 are the same directions, and the width direction (X direction) is a direction orthogonal to a conveyance direction (Y direction).
　第１実施態様の製造方法の実施に用いられるスキンケア剤付着装置２は、図３に示すように、搬送されてきた表面シート１０となる帯状の表面シート１００の一面に、スキンケア剤を溶融させた状態で塗布する塗布装置５と、塗布されたスキンケア剤を流体で冷却する冷却装置６とを具備している。図３中、搬送ロール４はスキンケア剤付着装置２において帯状の表面シート１００を搬送するロールである。 As shown in FIG. 3, the skin care agent adhering apparatus 2 used for carrying out the manufacturing method of the first embodiment melts the skin care agent on one surface of the belt-like surface sheet 100 that becomes the conveyed surface sheet 10. The coating device 5 is applied in a state, and the cooling device 6 is used to cool the applied skin care agent with a fluid. In FIG. 3, the conveyance roll 4 is a roll which conveys the strip | belt-shaped surface sheet 100 in the skin care agent adhesion apparatus 2. FIG.
　搬送ロール４は、図３に示すように、帯状の表面シート１００を搬送方向（Ｙ方向）に搬送する搬送ロール４１と、搬送ロール４１の下流側であって、帯状の表面シート１００を鉛直方向に搬送する搬送ロール４２及び搬送ロール４３と、搬送ロール４３の下流側であって、帯状の表面シート１００の方向を転換するロール４４と、ロール４４の下流側であって、帯状の表面シート１００を搬送方向に搬送する搬送ロール４５とを有している。 As shown in FIG. 3, the transport roll 4 includes a transport roll 41 that transports the belt-shaped topsheet 100 in the transport direction (Y direction), and a downstream side of the transport roll 41, and the strip-shaped topsheet 100 extends in the vertical direction. A transport roll 42 and a transport roll 43 that are transported to the downstream side of the transport roll 43, a roll 44 that changes the direction of the strip-shaped topsheet 100, and a downstream side of the roll 44 that is a strip-shaped topsheet 100. And a transport roll 45 for transporting in the transport direction.
　第１実施態様の製造方法の実施に用いられる搬送ロール４においては、搬送ロール４１及び搬送ロール４５が、帯状の表面シート１００を搬送方向に搬送する駆動ロールであり、それ以外の搬送ロール４２、搬送ロール４３及びロール４４が、駆動がない所謂フリーロールである。駆動ロールとしては、一般的な、ニップタイプのフィードロール、オメガ状に各ロールを配置したオメガタイプのフィードロールやロールの表面摩擦を高めたフィードロール等を利用することができる。 In the conveyance roll 4 used for implementation of the manufacturing method of the first embodiment, the conveyance roll 41 and the conveyance roll 45 are drive rolls that convey the belt-shaped topsheet 100 in the conveyance direction, and other conveyance rolls 42, The transport roll 43 and the roll 44 are so-called free rolls that are not driven. As the driving roll, a general nip type feed roll, an omega type feed roll in which each roll is arranged in an omega shape, a feed roll with an increased surface friction of the roll, or the like can be used.
　塗布装置５は、図３に示すように、帯状の表面シート１００を鉛直方向（図中のＺ方向）に搬送する搬送ロール４２と搬送ロール４３との間に配されている。塗布装置５は、図３に示すように、塗布装置５の先端にスキンケア剤を吐出するノズル５１と、塗布装置５の内部に、溶融させた状態のスキンケア剤を圧縮空気により供給する供給路（不図示）と、供給路（不図示）と接続されており、２０℃で半固体又は固体のスキンケア剤を溶融する溶融タンク（不図示）とを具備している。塗布装置５は、図３に示すように、スキンケア剤を水平方向から塗布するように、塗布装置５のノズル５１が、搬送ロール４２及び搬送ロール４３によりＺ方向に搬送される帯状の表面シート１００に対して垂直方向に配されていることが好ましい。このように配されていることにより、スキンケア剤塗布時の表面シート１００からの跳ね返りによる塗布装置５の汚染、具体的には、スキンケア剤が低粘度の剤である場合の塗布装置５からの液だれや、スキンケア剤の蓄積による表面シート１００への落下等による汚染を防止することができる。 As shown in FIG. 3, the coating device 5 is disposed between a transport roll 42 and a transport roll 43 that transport the belt-shaped topsheet 100 in the vertical direction (Z direction in the figure). As shown in FIG. 3, the coating device 5 includes a nozzle 51 that discharges the skin care agent to the tip of the coating device 5, and a supply path that supplies the skin care agent in a melted state to the inside of the coating device 5 with compressed air ( (Not shown) and a melting tank (not shown) that is connected to a supply path (not shown) and melts a semi-solid or solid skin care agent at 20 ° C. As shown in FIG. 3, the coating device 5 has a belt-like topsheet 100 in which the nozzle 51 of the coating device 5 is transported in the Z direction by the transport roll 42 and the transport roll 43 so as to apply the skin care agent from the horizontal direction. It is preferable that it is arranged in the vertical direction. By being arranged in this manner, contamination of the coating device 5 due to rebound from the top sheet 100 when the skin care agent is applied, specifically, the liquid from the coating device 5 when the skin care agent is a low viscosity agent. It is possible to prevent contamination due to dropping to the top sheet 100 due to accumulation of skin care agents.
　塗布装置５により帯状の表面シート１００の一面にスキンケア剤の塗布液が塗布される。尚、表面シート１０として、上述した凹凸構造の不織布を用いる場合には、上層不織布１０２側にスキンケア剤の塗布液が塗布される。塗布装置５により帯状の表面シート１００に塗布されるスキンケア剤の塗布液は、その塗布坪量に特に制限はないが、吸収体１２の吸収性能への影響、スキンケア効果、風合い等の観点から、０．１～２．０ｇ／ｍ2の
範囲内とすることが好ましく、０．２～１．０ｇ／ｍ2の範囲内とすることが更に好まし
い。この塗布量は、塗布液を塗布する前と塗布した後の塗布対象物の重量差から求めることができる。また、帯状の表面シート１００にスキンケア剤の塗布液を均一に塗布する観点から、塗布装置５のノズル５１と、搬送される帯状の表面シート１００との間隔は、１ｍｍ～２００ｍｍであることが好ましく、１０ｍｍ～１００ｍｍであることが更に好ましい。 A coating solution of a skin care agent is applied to one surface of the belt-shaped top sheet 100 by the coating device 5. In addition, when using the nonwoven fabric of the uneven structure mentioned above as the surface sheet 10, the coating liquid of a skin care agent is apply | coated to the upper layer nonwoven fabric 102 side. The coating liquid of the skin care agent applied to the belt-shaped topsheet 100 by the coating device 5 is not particularly limited in the application basis weight, but from the viewpoint of the influence on the absorption performance of the absorbent body 12, the skin care effect, the texture, etc. It is preferably in the range of 0.1 to 2.0 g / m 2 , more preferably in the range of 0.2 to 1.0 g / m 2 . This coating amount can be determined from the weight difference between the coating object before coating and after coating. Further, from the viewpoint of uniformly applying the skin care agent coating liquid to the belt-like topsheet 100, the distance between the nozzle 51 of the coating device 5 and the belt-like topsheet 100 being conveyed is preferably 1 mm to 200 mm. More preferably, it is 10 mm to 100 mm.
　冷却装置６は、図３に示すように、ロール４４の上流側であって、搬送ロール４３とロール４４との間に配されている。冷却装置６は、スキンケア剤が塗布された表面シート１００の一面側に流体を噴射する流体噴射ガンが配置されている。スキンケア剤付着装置２においては、帯状の表面シート１００の一面（上層不織布１０２）に塗布されたスキンケア剤は、帯状の表面シート１００の搬送方向を転換するロール４４と初めて接触する。その為、ロール４４の直前に、冷却装置６が配されることが好ましい。尚、スキンケア剤付着装置２においては、スキンケア剤の塗布された帯状の表面シート１００の一面（上層不織布１０２）と最初に接触する搬送設備が、ロール４４であるが、ロール４４よりも上流側で、スキンケア剤の塗布された帯状の表面シート１００の一面（上層不織布１０２）と最初に接触する搬送設備があれば、その部位の直前に、冷却装置６は配される。例えば、最初に接触する搬送設備としては、ロール４４以外に、帯状の表面シート１００の搬送方向を転換する方向転換バーや、帯状の表面シート１００を折り返すセーラー板等が挙げられる。 As shown in FIG. 3, the cooling device 6 is disposed on the upstream side of the roll 44 and between the transport roll 43 and the roll 44. The cooling device 6 is provided with a fluid ejection gun that ejects fluid onto one surface side of the top sheet 100 to which the skin care agent is applied. In the skin care agent attaching apparatus 2, the skin care agent applied to one surface (upper nonwoven fabric 102) of the belt-like top sheet 100 comes into contact with the roll 44 that changes the conveying direction of the belt-like top sheet 100 for the first time. Therefore, it is preferable to arrange the cooling device 6 immediately before the roll 44. In addition, in the skin care agent attaching apparatus 2, the transport equipment that first comes into contact with one surface (upper nonwoven fabric 102) of the belt-shaped topsheet 100 to which the skin care agent is applied is the roll 44, but upstream of the roll 44. If there is a transport facility that first comes into contact with one surface (upper nonwoven fabric 102) of the strip-shaped topsheet 100 to which the skin care agent is applied, the cooling device 6 is disposed immediately before that portion. For example, as the transport facility that comes into contact first, in addition to the roll 44, a direction changing bar that changes the transport direction of the belt-shaped topsheet 100, a sailor plate that folds the strip-shaped topsheet 100, and the like.
　冷却装置６としては、図３に示すように、流体を噴射する流体噴射ガンを用いることができ、流体噴射ガンの先端に流体を吐出するノズル６１と、流体噴射ガンの内部に、流体を供給する供給路（不図示）とを具備している。流体としては、空気、ガス、水等が挙げられ、コスト、供給装置の定期メンテや装置汚染等メンテ性の観点から、空気を好適に用いることができる。噴射する流体の温度としては、スキンケア剤の融点より低いことが好ましく、融点から１０℃以上低いことが更に好ましく、融点から２０℃以上低いことが特に好ましい。 As the cooling device 6, as shown in FIG. 3, a fluid ejection gun that ejects fluid can be used, and a fluid is supplied to the inside of the fluid ejection gun, a nozzle 61 that ejects fluid to the tip of the fluid ejection gun. Supply path (not shown). Examples of the fluid include air, gas, water, and the like, and air can be suitably used from the viewpoints of cost, maintenance such as periodic maintenance of the supply device and device contamination. The temperature of the fluid to be ejected is preferably lower than the melting point of the skin care agent, more preferably 10 ° C. or more lower than the melting point, and particularly preferably 20 ° C. or more lower than the melting point.
　流体として空気を用いる冷却装置６としては、例えば、ノズル６１と、帯状の表面シート１００を挟んで対向する位置に吸引装置（不図示）とを設け、ノズル６１から空気を吐出（送風）し、吸引装置で該空気を吸引することにより、スキンケア剤の塗布された帯状の表面シート１００に該空気を通過させることで冷却する装置を用いることができる。また、例えば、ノズル６１の先端を、帯状の表面シート１００の搬送方向と逆向きの方向に配し、スキンケア剤の塗布された帯状の表面シート１００の搬送方向と逆向きに、ノズル６１から空気を吐出（送風）して冷却する装置を用いることができる。 As the cooling device 6 using air as a fluid, for example, a suction device (not shown) is provided at a position facing the nozzle 61 and the belt-like topsheet 100, and air is discharged (blowed) from the nozzle 61. By sucking the air with a suction device, it is possible to use a device that cools the air by passing the air through the band-shaped topsheet 100 to which the skin care agent is applied. Further, for example, the tip of the nozzle 61 is arranged in a direction opposite to the conveying direction of the band-shaped topsheet 100, and air is passed from the nozzle 61 in a direction opposite to the conveying direction of the band-shaped topsheet 100 to which the skin care agent is applied. The apparatus which discharges (blows) and cools can be used.
　冷却装置６は、図３に示すように、帯状の表面シート１００の一面側に配されており、帯状の表面シート１００の一面に塗布されたスキンケア剤を、吹き飛ばさず、均一に冷却する観点から、ノズル６１と、搬送される帯状の表面シート１００との間隔は、１ｍｍ～２００ｍｍであることが好ましく、１０ｍｍ～１００ｍｍであることが更に好ましい。また、同様の観点から、ノズル６１から吐出される流体の圧力は０．０１～１．０ＭＰａとすることが好ましく、０．１～０．５ＭＰａとすることが更に好ましい。また、効率的に冷却する観点から、ノズル６１から吐出される流体の流量は、１０～１０００ｌ／ｍｉｎとするのが好ましく、更に５０～５００ｌ／ｍｉｎとするのが好ましい。 As shown in FIG. 3, the cooling device 6 is disposed on one surface side of the belt-shaped topsheet 100, and from the viewpoint of uniformly cooling the skin care agent applied to one surface of the strip-shaped topsheet 100 without blowing off. The distance between the nozzle 61 and the transported strip-shaped topsheet 100 is preferably 1 mm to 200 mm, and more preferably 10 mm to 100 mm. From the same viewpoint, the pressure of the fluid discharged from the nozzle 61 is preferably 0.01 to 1.0 MPa, and more preferably 0.1 to 0.5 MPa. From the viewpoint of efficient cooling, the flow rate of the fluid discharged from the nozzle 61 is preferably 10 to 1000 l / min, more preferably 50 to 500 l / min.
　次に、本発明の吸収性物品の製造方法を、第１実施態様に基づき図３を参照しながら説明する。 Next, the manufacturing method of the absorbent article of the present invention will be described based on the first embodiment with reference to FIG.
　まず、表面シート１０となる帯状の表面シート１００を搬送ロール４により搬送する。表面シート１０が、凹凸構造の不織布である場合には、例えば、周面に接合部１０３に対応する凸部を備えたエンボスロールと、該凸部と噛み込み状態となる凸部を有するロールとで上層不織布１０１連続体を噛み込みで凸部に沿った賦型を行い、エンボスロールに上層不織布１０１連続体を維持した状態で、エンボスロールに対向する表面が平滑なフラットロールとの間に、上層不織布１０１連続体と下層不織布１０２連続体とを重ねて供給し、接合することにより、凹凸構造の帯状の表面シート１００を形成することができる。 First, the belt-like topsheet 100 that becomes the topsheet 10 is transported by the transport roll 4. When the topsheet 10 is a non-woven fabric having a concavo-convex structure, for example, an embossing roll having a convex portion corresponding to the joint portion 103 on the peripheral surface, and a roll having a convex portion that engages with the convex portion In the state where the upper layer nonwoven fabric 101 continuum is bitten and shaped along the convex portion and the upper layer nonwoven fabric 101 continuum is maintained in the embossing roll, the surface facing the embossing roll is between a flat roll and a smooth surface. The upper surface nonwoven fabric 101 continuum and the lower layer nonwoven fabric 102 continuum are supplied in layers and joined together to form a band-shaped topsheet 100 having an uneven structure.
　次いで、図３に示すように、搬送ロール４２と搬送ロール４３との間に位置する塗布装置５により、スキンケア剤を溶融させた状態で帯状の表面シート１００の一面に塗布する（塗布工程Ｄ）。尚、表面シート１０として、上述した凹凸構造の不織布を用いる場合には、塗布装置５により、上層不織布１０２の外表面にスキンケア剤を塗布する。スキンケア剤の塗布は、帯状の表面シート１００の一面に連続して塗布してもよく、形成された使い捨ておむつ１の表面シート１０の一部に塗布されるように、帯状の表面シート１００の一面に間欠的に塗布してもよい。 Next, as shown in FIG. 3, the application device 5 located between the transport roll 42 and the transport roll 43 is applied to one surface of the belt-like topsheet 100 in a state where the skin care agent is melted (application step D). . In addition, when using the nonwoven fabric of the uneven structure mentioned above as the surface sheet 10, the skin care agent is apply | coated to the outer surface of the upper layer nonwoven fabric 102 with the coating device 5. FIG. The skin care agent may be applied continuously on one surface of the strip-shaped topsheet 100, or on one surface of the strip-shaped topsheet 100 so as to be applied to a part of the topsheet 10 of the formed disposable diaper 1. It may be applied intermittently.
　次いで、図３に示すように、ロール４４の上流側であって、搬送ロール４３とロール４４との間に配されている冷却装置６により、帯状の表面シート１００の一面に塗布されたスキンケア剤が、帯状の表面シート１００を搬送する搬送設備（ロール４４）に接触する前に、塗布されたスキンケア剤を帯状の表面シート１００の一面側から流体で冷却する（冷却工程Ｅ）。 Next, as shown in FIG. 3, the skin care agent applied to one surface of the belt-shaped topsheet 100 by the cooling device 6 disposed upstream of the roll 44 and between the transport roll 43 and the roll 44. However, before contacting the transport facility (roll 44) for transporting the belt-shaped topsheet 100, the applied skin care agent is cooled with a fluid from one side of the strip-shaped topsheet 100 (cooling step E).
　次いで、図３に示すように、帯状の表面シート１００の一面側とロール４４とが接触しながら、ロール４４により、帯状の表面シート１００の方向を転換し、搬送ロール４５により、Ｙ方向に搬送される。次いで、スキンケア剤を付着させた帯状の表面シート１００は、次工程に搬送される。 Next, as shown in FIG. 3, while the one surface side of the belt-shaped topsheet 100 and the roll 44 are in contact, the direction of the strip-shaped topsheet 100 is changed by the roll 44 and transported in the Y direction by the transport roll 45. Is done. Next, the band-shaped topsheet 100 to which the skin care agent is attached is conveyed to the next step.
　次工程においては、スキンケア剤を付着させた帯状の表面シート１００の他面側（スキンケア剤が塗布されていない面側）と、裏面シート３２の連続体とを、搬送方向（Ｙ方向）に断続的に供給される複数個の吸収体３３，３３・・・を挟時するように、常法に従って固定するとともに、帯状の表面シート１００の搬送方向（Ｙ方向）の両側部それぞれに沿って、レッグギャザー形成用の弾性部材１４を搬送方向（Ｙ方向）に伸長させた状態で、常法に従って固定する。また、帯状の表面シート１００の一面側（スキンケア剤が塗布された面側）に、帯状の表面シート１００の搬送方向（Ｙ方向）の両側部それぞれに沿って、サイドシート１００の連続体を常法に従って固定し、各サイドシート１００の連続体の幅方向（Ｘ方向）内方側に、立体ギャザー多形成用の弾性部材１５を搬送方向（Ｙ方向）に伸長させた状態で、常法に従って固定する。このようにして形成された使い捨ておむつ１の連続体を、公知の切断手段により切断することにより、使い捨ておむつ１が連続的に得られる。 In the next step, the other surface side (the surface side where the skin care agent is not applied) of the band-shaped topsheet 100 to which the skin care agent is adhered and the continuous body of the back surface sheet 32 are intermittent in the transport direction (Y direction). Are fixed in accordance with a conventional method so as to sandwich a plurality of absorbent bodies 33, 33... That are fed in a normal manner, and along each of both sides in the transport direction (Y direction) of the belt-like topsheet 100, The elastic member 14 for leg gather formation is fixed according to a conventional method in a state where the elastic member 14 is extended in the transport direction (Y direction). In addition, a continuous body of side sheets 100 is usually provided along one side of the belt-shaped surface sheet 100 (the surface on which the skin care agent is applied) along both sides of the belt-shaped surface sheet 100 in the conveying direction (Y direction). In accordance with a conventional method, the elastic member 15 for forming a three-dimensional gather is extended in the conveying direction (Y direction) on the inner side in the width direction (X direction) of the continuous body of each side sheet 100. Fix it. The disposable diaper 1 is continuously obtained by cutting the continuous body of the disposable diaper 1 thus formed by a known cutting means.
　第１実施態様の製造方法に関し、特に説明しない点は、従来の、いわゆる縦流れ方式の展開型使い捨ておむつの製造方法と同様にして製造することができる。 Regarding the manufacturing method of the first embodiment, points that are not particularly described can be manufactured in the same manner as the conventional manufacturing method of a so-called longitudinal flow type disposable disposable diaper.
　第１実施態様の製造方法によれば、表面シート１０の一部にスキンケア剤が塗布された使い捨ておむつ１を、効率よく連続的に製造することができる。特に、第１実施態様の製造方法によれば、搬送設備（ロール４４）に接触する前に、冷却装置６により、塗布されたスキンケア剤を帯状の表面シート１００の一面側から流体で冷却するので、搬送設備（ロール４４）と接触する表面シート１００の一面側（凹凸構造の不織布の場合には凸部の頂部）を積極的に冷却でき、また塗布されたスキンケア剤１８は表面シート１０の構成繊維内に入り込んで固定化され、搬送設備（ロール４４）にスキンケア剤を付着させ難い。その為、搬送設備を汚し難く、清掃の手間等が省け、表面シート１０の一部にスキンケア剤が塗布された使い捨ておむつ１を、効率よく連続的に製造することができる。また、スキンケア剤が吸収性物品の塗布位置で表面シート１００に固定化されるため、製造中に必要としない部位に移行させ難く、所望の位置でスキンケア剤が設けられた吸収性物品を精度よく製造することができる。例えば、スキンケア剤を、表面シート１０に塗布し立体ギャザーには塗布しない場合、スキンケア剤を表面シート１０に塗布後冷却固化した後に、吸収性物品を折り畳むことにより、立体ギャザーにスキンケア剤を移行させず、表面シート１０にスキンケア剤を設けた吸収性物品を精度良く製造することができる。 According to the manufacturing method of the first embodiment, it is possible to efficiently and continuously manufacture the disposable diaper 1 in which a skin care agent is applied to a part of the topsheet 10. In particular, according to the manufacturing method of the first embodiment, the applied skin care agent is cooled by the fluid from one surface side of the belt-like topsheet 100 by the cooling device 6 before contacting the transport facility (roll 44). In addition, one side of the surface sheet 100 that contacts the transport facility (roll 44) (in the case of a nonwoven fabric with a concavo-convex structure) can be actively cooled, and the applied skin care agent 18 constitutes the surface sheet 10 It enters into the fiber and is fixed, and it is difficult for the skin care agent to adhere to the transport facility (roll 44). For this reason, it is difficult to contaminate the transport facility, and it is possible to efficiently and continuously manufacture the disposable diaper 1 in which the skin care agent is applied to a part of the top sheet 10 without the need for cleaning. In addition, since the skin care agent is fixed to the topsheet 100 at the application position of the absorbent article, it is difficult to shift to a part that is not required during manufacture, and the absorbent article provided with the skin care agent at a desired position can be accurately obtained. Can be manufactured. For example, when the skin care agent is applied to the top sheet 10 but not to the three-dimensional gather, the skin care agent is applied to the top sheet 10 and then cooled and solidified, and then the absorbent article is folded to transfer the skin care agent to the three-dimensional gather. Therefore, an absorbent article in which a skin care agent is provided on the top sheet 10 can be manufactured with high accuracy.
　以下、本発明の使い捨ておむつの製造方法を、その好ましい第２～第４実施態様に基づき図面を参照しながら説明する。
　先ず、第２～第４実施態様により製造される使い捨ておむつについて説明すると、第１実施態様により製造される使い捨ておむつ１と同様である。 Hereinafter, a method for producing a disposable diaper of the present invention will be described based on preferred second to fourth embodiments with reference to the drawings.
First, the disposable diaper manufactured according to the second to fourth embodiments will be described in the same manner as the disposable diaper 1 manufactured according to the first embodiment.
　次に、本発明の第２実施態様として、使い捨ておむつ１の好ましい製造方法について図４を参照して説明する。第２実施態様において、特に説明しない点については、第１実施態様に関して詳述した説明が適宜適用される。 Next, as a second embodiment of the present invention, a preferred manufacturing method of the disposable diaper 1 will be described with reference to FIG. In the second embodiment, the description in detail regarding the first embodiment is appropriately applied to points that are not particularly described.
　第２実施態様の製造方法の実施に用いられるスキンケア剤付着装置２Ｂは、図４に示すように、第１実施態様の製造方法の実施に用いられるスキンケア剤付着装置２と同様に、表面シート１０となる帯状の表面シート１００を搬送する搬送ロール４と、スキンケア剤を溶融させた状態で帯状の表面シート１００の一面に塗布する塗布装置５と、塗布されたスキンケア剤を流体で冷却する冷却装置６とを具備しており、更に、帯状の表面シート１００を予め流体で冷却する予備冷却装置７を具備している。 As shown in FIG. 4, the skin care agent attaching device 2B used in the implementation of the manufacturing method of the second embodiment is similar to the skin care agent attaching device 2 used in the implementation of the manufacturing method of the first embodiment. A transport roll 4 for transporting the strip-shaped topsheet 100, a coating device 5 for applying the skincare agent to one surface in a melted state, and a cooling device for cooling the coated skincare agent with a fluid 6 and a preliminary cooling device 7 that cools the belt-like top sheet 100 with a fluid in advance.
　予備冷却装置７は、図４に示すように、塗布装置５の上流側であって、搬送ロール４１と搬送ロール４２との間に配されている。予備冷却装置７は、図４に示すように、塗布装置５によりスキンケア剤が塗布される帯状の表面シート１００一面側を予備冷却できるように、帯状の表面シート１００の一面側に配されていることが好ましい。予備冷却装置７としては、図４に示すように、流体を噴射する流体噴射ガンを用いることができ、流体噴射ガンの先端に流体を吐出するノズル７１と、流体噴射ガンの内部に、流体を供給する供給路（不図示）とを具備している。流体としては、空気、ガス、水等が挙げられ、コストの観点から、空気を好適に用いることができる。 As shown in FIG. 4, the preliminary cooling device 7 is disposed on the upstream side of the coating device 5 and between the transport roll 41 and the transport roll 42. As shown in FIG. 4, the preliminary cooling device 7 is arranged on one surface side of the belt-like topsheet 100 so that the one surface side of the beltlike topsheet 100 to which the skin care agent is applied can be precooled. It is preferable. As shown in FIG. 4, a fluid injection gun that ejects fluid can be used as the precooling device 7, and a nozzle 71 that discharges fluid to the tip of the fluid ejection gun, and fluid inside the fluid ejection gun A supply path (not shown) for supply. Examples of the fluid include air, gas, water, and the like, and air can be preferably used from the viewpoint of cost.
　スキンケア剤付着装置２Ｂにおいては、予備冷却装置７は、図４に示すように、帯状の表面シート１００の一面側に配されており、帯状の表面シート１００にダメージを与えず、均一に冷却する観点から、ノズル７１と、搬送される帯状の表面シート１００との間隔は、１ｍｍ～２００ｍｍであることが好ましく、１０ｍｍ～１００ｍｍであることが更に好ましい。噴射する流体の温度としては、スキンケア剤の融点と同等又はスキンケア剤の融点より低い温度で行うことが好ましい。 In the skin care agent adhering device 2B, as shown in FIG. 4, the preliminary cooling device 7 is arranged on one surface side of the belt-shaped topsheet 100, and cools uniformly without damaging the strip-shaped topsheet 100. From the viewpoint, the distance between the nozzle 71 and the transported strip-shaped topsheet 100 is preferably 1 mm to 200 mm, and more preferably 10 mm to 100 mm. The temperature of the fluid to be ejected is preferably the same as the melting point of the skin care agent or lower than the melting point of the skin care agent.
　次に、本発明の使い捨ておむつの製造方法を、第２実施態様に基づき図面を参照しながら説明する。 Next, the manufacturing method of the disposable diaper of this invention is demonstrated, referring drawings based on a 2nd embodiment.
　まず、第１実施態様の使い捨ておむつ１の製造方法と同様に、表面シート１０となる帯状の表面シート１００を搬送ロール４によりＹ方向に搬送する。次いで、塗布工程Ｄの前に、帯状の表面シート１００を予め流体で冷却する。具体的には、図４に示すように、塗布装置５の上流側であって、帯状の表面シート１００の一面にスキンケア剤を塗布する（塗布工程Ｄ）前に、予備冷却装置７により、スキンケア剤が塗布される帯状の表面シート１００を、帯状の表面シート１００の一面側から流体で冷却する（予備冷却工程Ｆ）。 First, similarly to the method of manufacturing the disposable diaper 1 of the first embodiment, the belt-like topsheet 100 to be the topsheet 10 is transported in the Y direction by the transport roll 4. Next, before the coating step D, the belt-shaped top sheet 100 is cooled in advance with a fluid. Specifically, as shown in FIG. 4, before the skin care agent is applied to one surface of the belt-like top sheet 100 on the upstream side of the coating device 5 (application step D), the pre-cooling device 7 performs skin care. The belt-shaped topsheet 100 to which the agent is applied is cooled with a fluid from one surface side of the strip-shaped topsheet 100 (preliminary cooling step F).
　その後は、第１実施態様の使い捨ておむつ１の製造方法と同じ工程Ｄ，Ｅ（図４参照）を経ることにより、使い捨ておむつ１を製造することができる。　 Thereafter, the disposable diaper 1 can be manufactured through the same steps D and E (see FIG. 4) as the manufacturing method of the disposable diaper 1 of the first embodiment. *
　第２実施態様の製造方法によれば、特に、帯状の表面シート１００の一面にスキンケア剤を塗布する（塗布工程Ｄ）前に、予備冷却装置７により、スキンケア剤が塗布される帯状の表面シート１００を流体で冷却するので、スキンケア剤の固化を早める効果がある。その為、搬送設備を汚し難く、清掃の手間等が省け、表面シート１０の一部にスキンケア剤が塗布された使い捨ておむつ１を、更に効率よく連続的に製造することができる。特に、凹凸構造の不織布の場合には予備冷却装置７により凸部内に冷気を保持しているため冷却効率が向上し、冷却工程Ｅだけでは冷却しにくい嵩高なシートには有効である。 According to the manufacturing method of the second embodiment, in particular, before the skin care agent is applied to one surface of the belt-like surface sheet 100 (application step D), the belt-like surface sheet to which the skin care agent is applied by the preliminary cooling device 7. Since 100 is cooled by the fluid, there is an effect of accelerating solidification of the skin care agent. Therefore, it is difficult to pollute the transport facility, the labor for cleaning, etc. can be saved, and the disposable diaper 1 in which the skin care agent is applied to a part of the topsheet 10 can be manufactured more efficiently and continuously. In particular, in the case of a non-woven fabric having a concavo-convex structure, the cooling efficiency is improved because the precooling device 7 holds cold air in the convex portion, and this is effective for a bulky sheet that is difficult to cool only by the cooling step E.
　次に、本発明の第３実施態様として、使い捨ておむつ１の好ましい製造方法について図５を参照して説明する。第３実施態様において、特に説明しない点については、第１実施態様に関して詳述した説明が適宜適用される。 Next, as a third embodiment of the present invention, a preferred manufacturing method of the disposable diaper 1 will be described with reference to FIG. In the third embodiment, the description in detail regarding the first embodiment is applied as appropriate to points that are not particularly described.
　第３実施態様の製造方法の実施に用いられるスキンケア剤付着装置２Ｃは、図５に示すように、第１実施態様の製造方法の実施に用いられるスキンケア剤付着装置２と同様に、表面シート１０となる帯状の表面シート１００を搬送する搬送ロール４と、スキンケア剤を溶融させた状態で帯状の表面シート１００の一面に塗布する塗布装置５と、塗布されたスキンケア剤を流体で冷却する冷却装置とを具備しているが、第３実施態様の製造方法の実施に用いられる冷却装置６Ｂは、第１実施態様の製造方法の実施に用いられる冷却装置６と異なる。 As shown in FIG. 5, the skin care agent attaching apparatus 2C used in the implementation of the manufacturing method of the third embodiment is similar to the skin care agent attaching apparatus 2 used in the implementation of the manufacturing method of the first embodiment, as shown in FIG. A transport roll 4 for transporting the strip-shaped topsheet 100, a coating device 5 for applying the skincare agent to one surface in a melted state, and a cooling device for cooling the coated skincare agent with a fluid However, the cooling device 6B used for carrying out the manufacturing method of the third embodiment is different from the cooling device 6 used for carrying out the manufacturing method of the first embodiment.
　冷却装置６Ｂは、図５に示すように、ロール４４の上流側であって、搬送ロール４３とロール４４との間に配されている。スキンケア剤付着装置２Ｃにおいては、スキンケア剤付着装置２と同様に、帯状の表面シート１００の一面（上層不織布１０２）に塗布されたスキンケア剤は、帯状の表面シート１００を搬送する搬送設備であるロール４４と初めて接触する。その為、ロール４４の直前に、冷却装置６Ｂが配されることが好ましい。 As shown in FIG. 5, the cooling device 6 </ b> B is disposed on the upstream side of the roll 44 and between the transport roll 43 and the roll 44. In skin care agent attaching apparatus 2 </ b> C, as with skin care agent attaching apparatus 2, the skin care agent applied to one surface (upper nonwoven fabric 102) of the belt-like top sheet 100 is a roll that is a transport facility that transports the belt-like top sheet 100. First contact with 44. Therefore, it is preferable that the cooling device 6 </ b> B is disposed immediately before the roll 44.
　冷却装置６Ｂとしては、図５に示すように、流体を噴射する流体噴射ガンを用いることができ、流体噴射ガンの先端に流体を吐出するノズル６１と、流体噴射ガンの内部に、流体を供給する供給路（不図示）とを具備している。流体としては、空気、ガス、水等が挙げられ、コストの観点から、空気を好適に用いることができる。 As the cooling device 6B, as shown in FIG. 5, a fluid ejection gun that ejects fluid can be used, and a fluid is supplied to the nozzle 61 that discharges fluid to the tip of the fluid ejection gun and to the inside of the fluid ejection gun. Supply path (not shown). Examples of the fluid include air, gas, water, and the like, and air can be preferably used from the viewpoint of cost.
　冷却装置６Ｂは、塗布されたスキンケア剤を帯状の表面シート１００の両面側から流体で冷却する。具体的には、冷却装置６Ｂは、図５に示すように、帯状の表面シート１００の一面側に配された流体噴射ガン６ａと、及び帯状の表面シート１００の他面側に配された流体噴射ガン６ｂとを備えており、帯状の表面シート１００の一面に塗布されたスキンケア剤を、帯状の表面シート１００の内部、即ち、表面シート１００の構成繊維間に閉じ込めるように、帯状の表面シート１００の両面側から流体を噴射する。流体噴射ガン６ａは、帯状の表面シート１００の一面に塗布されたスキンケア剤を、吹き飛ばさず、均一に冷却する観点から、ノズル６１ａと、搬送される帯状の表面シート１００との間隔は、１ｍｍ～２００ｍｍであることが好ましく、１０ｍｍ～１００ｍｍであることが更に好ましい。流体噴射ガン６ｂは、帯状の表面シート１００の一面に塗布されたスキンケア剤を、帯状の表面シート１００の内部に閉じ込める観点から、ノズル６１ｂと、搬送される帯状の表面シート１００との間隔は、１ｍｍ～２００ｍｍであることが好ましく、１０ｍｍ～１００ｍｍであることが更に好ましい。 The cooling device 6B cools the applied skin care agent with fluid from both sides of the belt-like surface sheet 100. Specifically, as shown in FIG. 5, the cooling device 6 </ b> B includes a fluid ejection gun 6 a disposed on one surface side of the belt-shaped surface sheet 100 and a fluid disposed on the other surface side of the belt-shaped surface sheet 100. A belt-like surface sheet so that the skin care agent applied to one surface of the belt-like surface sheet 100 is confined inside the belt-like surface sheet 100, that is, between constituent fibers of the surface sheet 100. Fluid is ejected from both sides of 100. In the fluid spray gun 6a, the skin care agent applied on one surface of the belt-shaped topsheet 100 is not blown away and is uniformly cooled, and the distance between the nozzle 61a and the transported strip-shaped topsheet 100 is 1 mm to It is preferably 200 mm, and more preferably 10 mm to 100 mm. From the viewpoint of confining the skin care agent applied to one surface of the belt-shaped topsheet 100 inside the strip-shaped topsheet 100, the fluid spray gun 6b has a gap between the nozzle 61b and the transported strip-shaped topsheet 100 as follows: The thickness is preferably 1 mm to 200 mm, more preferably 10 mm to 100 mm.
　次に、本発明の使い捨ておむつの製造方法を、第３実施態様に基づき図面を参照しながら説明する。 Next, the manufacturing method of the disposable diaper of this invention is demonstrated, referring drawings based on 3rd embodiment.
　まず、第１実施態様の使い捨ておむつ１の製造方法と同様に、表面シート１０となる帯状の表面シート１００を搬送ロール４によりＹ方向に搬送する。次いで、第１実施態様の使い捨ておむつ１の製造方法と同様に、図５に示すように、塗布装置５により、帯状の表面シート１００の一面にスキンケア剤を塗布する（塗布工程Ｄ）。 First, similarly to the method of manufacturing the disposable diaper 1 of the first embodiment, the belt-like topsheet 100 to be the topsheet 10 is transported in the Y direction by the transport roll 4. Next, as in the manufacturing method of the disposable diaper 1 of the first embodiment, as shown in FIG. 5, the skin care agent is applied to one surface of the belt-shaped topsheet 100 by the application device 5 (application step D).
　次いで、図５に示すように、ロール４４の上流側であって、搬送ロール４３とロール４４との間に配されている冷却装置６Ｂ（流体噴射ガン６ａ，６ｂ）により、塗布されたスキンケア剤を帯状の表面シート１００の両面側（一面側及び他面側）から流体で冷却する。具体的には、冷却装置６Ｂ（流体噴射ガン６ａ，６ｂ）により、帯状の表面シート１００の一面に塗布されたスキンケア剤を帯状の表面シート１００の構成繊維間に閉じ込めるように、帯状の表面シート１００の両面側から流体を噴射して、帯状の表面シート１００を搬送する搬送設備（ロール４４）に接触する前に、帯状の表面シート１００に塗布されたスキンケア剤を流体で冷却する（冷却工程Ｅ’）。 Next, as shown in FIG. 5, the skin care agent applied by the cooling device 6 </ b> B ( fluid spray guns 6 a and 6 b) that is disposed upstream of the roll 44 and between the transport roll 43 and the roll 44. Is cooled with a fluid from both sides (one side and the other side) of the belt-like topsheet 100. Specifically, the belt-shaped surface sheet is used so that the skin care agent applied to one surface of the belt-shaped surface sheet 100 is confined between the constituent fibers of the belt-shaped surface sheet 100 by the cooling device 6B ( fluid spray guns 6a and 6b). The skin care agent applied to the belt-like topsheet 100 is cooled with the fluid before the fluid is ejected from both sides of the belt 100 and contacted with the transport facility (roll 44) that transports the belt-like topsheet 100 (cooling step). E ').
　その後は、第１実施態様の使い捨ておむつ１の製造方法と同じ工程（図５参照）を経ることにより、使い捨ておむつ１を製造することができる。 Thereafter, the disposable diaper 1 can be manufactured by going through the same process (see FIG. 5) as the manufacturing method of the disposable diaper 1 of the first embodiment.
　第３実施態様の製造方法によれば、冷却装置６Ｂが、図５に示すように、帯状の表面シート１００の両面側に配された流体噴射ガン６ａ，６ｂを備えており、帯状の表面シート１００に塗布されたスキンケア剤を、帯状の表面シート１００の内部に閉じ込めるように、帯状の表面シート１００の両面側から流体を噴射して、スキンケア剤を冷却するので、搬送設備（ロール４４）にスキンケア剤を更に付着させ難い。その為、搬送設備を更に汚し難く、清掃の手間等が省け、表面シート１０の一部にスキンケア剤が塗布された使い捨ておむつ１を、更に効率よく連続的に製造することができる。第３実施態様の製造方法によれば、使い捨ておむつ１の表面シート１０として、多層構造の不織布や凹凸構造の不織布を用いた場合に、帯状の表面シート１００の内部（構成繊維間）に閉じ込め易いので、特に上記効果が奏される。 According to the manufacturing method of the third embodiment, the cooling device 6B includes the fluid jet guns 6a and 6b disposed on both sides of the belt-like topsheet 100 as shown in FIG. Since the skin care agent applied to 100 is sprayed from both sides of the belt-like surface sheet 100 to cool the skin care agent so that the skin care agent is confined inside the belt-like surface sheet 100, the skin care agent is cooled. It is difficult to further adhere skin care agents. For this reason, it is possible to manufacture the disposable diaper 1 in which the skin care agent is applied to a part of the surface sheet 10 more efficiently and continuously, making it less difficult to contaminate the transport facility and cleaning. According to the manufacturing method of the third embodiment, when a multilayer nonwoven fabric or an uneven nonwoven fabric is used as the topsheet 10 of the disposable diaper 1, it is easy to confine within the beltlike topsheet 100 (between constituent fibers). As a result, the above-described effects are particularly achieved.
　次に、本発明の第４実施態様として、使い捨ておむつ１の好ましい製造方法について図６を参照して説明する。第４実施態様において、特に説明しない点については、第１実施態様に関して詳述した説明が適宜適用される。 Next, as a fourth embodiment of the present invention, a preferred method for manufacturing the disposable diaper 1 will be described with reference to FIG. In the fourth embodiment, the description in detail regarding the first embodiment is applied as appropriate to points that are not particularly described.
　第４実施態様の製造方法の実施に用いられるスキンケア剤付着装置２Ｄは、図６に示すように、第１実施態様の製造方法の実施に用いられるスキンケア剤付着装置２と同様に、表面シート１０となる帯状の表面シート１００を搬送する搬送ロール４と、スキンケア剤を溶融させた状態で帯状の表面シート１００の一面に塗布する塗布装置５と、塗布されたスキンケア剤を流体で冷却する冷却装置６とを具備しているが、第４実施態様の製造方法の実施に用いられる搬送ロールは、第１実施態様の製造方法の実施に用いられる搬送ロール４と異なる。 As shown in FIG. 6, the skin care agent attaching apparatus 2D used for carrying out the manufacturing method of the fourth embodiment is similar to the skin care agent attaching apparatus 2 used for carrying out the manufacturing method of the first embodiment, as shown in FIG. A transport roll 4 for transporting the strip-shaped topsheet 100, a coating device 5 for applying the skincare agent to one surface in a melted state, and a cooling device for cooling the coated skincare agent with a fluid However, the conveyance roll used for implementation of the manufacturing method of a 4th embodiment differs from the conveyance roll 4 used for implementation of the manufacturing method of a 1st embodiment.
　第４実施態様の搬送ロール４のロール４４ｂは、その温度を下げる冷却手段を備えている。具体的には、ロール４４ｂは、図６に示すように、幅方向（Ｘ方向）の両端間に亘って延びる空気口４００が形成されている。冷却手段は、任意のタイミングで、貫通する空気口４００に空気を噴き通すことによりロール４４ｂの温度を下げることができる。ロール４４ｂに用いるその他の冷却手段としては、内部に冷却水を備える冷却ロールやヒートパイプ方式（内部で蒸発・凝縮を繰り返す）等が挙げられる。 The roll 44b of the transport roll 4 according to the fourth embodiment includes a cooling means for lowering the temperature. Specifically, as shown in FIG. 6, the roll 44 b has an air port 400 that extends across both ends in the width direction (X direction). The cooling means can lower the temperature of the roll 44b by blowing air through the air port 400 that passes therethrough at an arbitrary timing. Examples of other cooling means used for the roll 44b include a cooling roll having cooling water inside and a heat pipe system (repeating evaporation and condensation inside).
　次に、本発明の使い捨ておむつの製造方法を、第４実施態様に基づき図面を参照しながら説明する。 Next, the manufacturing method of the disposable diaper of this invention is demonstrated, referring drawings based on 4th embodiment.
　まず、第１実施態様の使い捨ておむつ１の製造方法と同様に、表面シート１０となる帯状の表面シート１００を搬送ロール４により搬送する。次いで、第１実施態様の使い捨ておむつ１の製造方法と同様に、図６に示すように、塗布装置５により、帯状の表面シート１００の一面にスキンケア剤を塗布する（塗布工程Ｄ）。次いで、第１実施態様の使い捨ておむつ１の製造方法と同様に、図６に示すように、冷却装置６により、塗布されたスキンケア剤を流体で冷却する（冷却工程Ｅ）。 First, similarly to the method for manufacturing the disposable diaper 1 of the first embodiment, the belt-like topsheet 100 to be the topsheet 10 is transported by the transport roll 4. Next, as in the manufacturing method of the disposable diaper 1 of the first embodiment, as shown in FIG. 6, a skin care agent is applied to one surface of the belt-shaped top sheet 100 by the application device 5 (application step D). Next, similarly to the method for manufacturing the disposable diaper 1 of the first embodiment, as shown in FIG. 6, the applied skin care agent is cooled with a fluid by the cooling device 6 (cooling step E).
　次いで、図６に示すように、帯状の表面シート１００の一面側とロール４４ｂとが接触しながら、他の搬送ロール４１，４２，４３，４５よりも温度を低くしたロール４４ｂにより、帯状の表面シート１００の方向を転換し、搬送ロール４５により、スキンケア剤を付着させた帯状の表面シート１００は、次工程に搬送される。 Next, as shown in FIG. 6, the belt-shaped surface is formed by the roll 44 b whose temperature is lower than that of the other transport rolls 41, 42, 43, 45 while the one surface side of the belt-shaped topsheet 100 and the roll 44 b are in contact with each other. The strip-shaped topsheet 100 to which the direction of the sheet 100 is changed and the skin care agent is adhered by the transport roll 45 is transported to the next step.
　その後は、第１実施態様の使い捨ておむつ１の製造方法と同じ工程を経ることにより、使い捨ておむつ１を製造することができる。 Thereafter, the disposable diaper 1 can be manufactured through the same process as the manufacturing method of the disposable diaper 1 of the first embodiment.
　第４実施態様の製造方法によれば、ロール４４ｂの温度を下げることができるので、帯状の表面シート１００に塗布されたスキンケア剤が、搬送設備（ロール４４）に更に付着し難い。その為、搬送設備を更に汚し難く、清掃の手間等が省け、表面シート１０の一部にスキンケア剤が塗布された使い捨ておむつ１を、更に効率よく連続的に製造することができる。 According to the manufacturing method of the fourth embodiment, since the temperature of the roll 44b can be lowered, the skin care agent applied to the belt-like topsheet 100 is more difficult to adhere to the transport facility (roll 44). For this reason, it is possible to manufacture the disposable diaper 1 in which the skin care agent is applied to a part of the surface sheet 10 more efficiently and continuously, making it less difficult to contaminate the transport facility and cleaning.
　本発明の吸収性物品の製造方法は、上述の第１，第２，第３，第４実施態様の製造方法に何ら制限されるものではなく、適宜変更可能である。 The manufacturing method of the absorbent article of the present invention is not limited to the manufacturing methods of the first, second, third, and fourth embodiments described above, and can be changed as appropriate.
　例えば、上述の第１，第２，第３，第４実施態様の製造方法により製造される使い捨ておむつ１は、展開型の使い捨ておむつであるが、パンツ型使い捨ておむつであってもよく、生理用ナプキン、吸収パッド等の吸収性物品であってもよい。また、上述の第１，第２，第３，第４実施態様の製造方法のように、塗布対象が吸収性物品の表面シートである場合、上述の塗布工程で塗布される構成シートは、個々に切断されて吸収性物品となる前の帯状に連続する吸収性物品の連続体であってもよい。 For example, the disposable diaper 1 manufactured by the manufacturing method according to the first, second, third, and fourth embodiments described above is an unfolded disposable diaper, but may be a pants-type disposable diaper. Absorbent articles such as napkins and absorbent pads may be used. In addition, when the application target is a surface sheet of an absorbent article as in the manufacturing methods of the first, second, third, and fourth embodiments described above, the constituent sheets applied in the application process described above are individually It may be a continuous body of absorbent articles that are continuous in a strip shape before being cut into pieces.
　また、上述の第１，第２，第３，第４実施態様に用いられるスキンケア剤付着装置は、塗布装置５によりスキンケア剤を塗布しているが、スキンケア剤の塗布方法としては、塗布装置５以外の多様な方法を用いることができる。例えば、塗布方式としては、ダイスコーター方式、スロットスプレー方式、カーテンスプレー方式、メルトブローン方式、スパイラルスプレー方式、グラビア方式、ビード方式等を用いることができる。 In addition, the skin care agent attaching device used in the first, second, third, and fourth embodiments described above applies the skin care agent by the application device 5, but the application method of the skin care agent is as follows. Various methods other than can be used. For example, as a coating method, a die coater method, a slot spray method, a curtain spray method, a melt blown method, a spiral spray method, a gravure method, a bead method, or the like can be used.
　また、上述の第１，第２，第３，第４実施態様に用いられるスキンケア剤付着装置の搬送ロール４２及び搬送ロール４３は、帯状の表面シート１００を鉛直方向（図中のＺ方向）に搬送するように配されているが、帯状の表面シート１００を鉛直方向（図中のＺ方向）以外に搬送するように配されていてもよい。 Moreover, the conveyance roll 42 and the conveyance roll 43 of the skin care agent adhesion apparatus used for the above-mentioned 1st, 2nd, 3rd, 4th embodiment make the strip | belt-shaped surface sheet 100 a vertical direction (Z direction in a figure). Although it arrange | positions so that it may convey, you may distribute | arrange so that the strip | belt-shaped surface sheet 100 may be conveyed in directions other than the perpendicular direction (Z direction in a figure).
　また、上述の第４実施態様の搬送ロール４においては、ロール４４ｂだけ冷却しているが、ロール４４ｂだけでなく、搬送ロール４１、４２、４３を冷却することで、シートおよび塗布されたスキンケア剤を効率的に冷却してもよい。
　また、表面シートだけでなく、セカンドレイヤー、ギャザー材等の吸収性物品の他の構成シートにスキンケア剤を塗布する場合にも用いてもよい。 Moreover, in the conveyance roll 4 of the above-mentioned 4th embodiment, although only the roll 44b is cooled, not only the roll 44b but the conveyance roll 41, 42, 43 is cooled, and a sheet | seat and the apply | coated skin care agent May be cooled efficiently.
Moreover, you may use not only a surface sheet but when applying a skin care agent to other structural sheets of absorbent articles, such as a second layer and a gather material.
　また、搬送ロール４（特にロール４４）には、スキンケア剤の付着防止の観点から、離型性、すべり性に優れるフッ素樹脂、シロキサン系樹脂、エンプラ、スーパーエンプラ等またはその組み合わせによる有機系のコーティングを施してもよい。 The transport roll 4 (especially the roll 44) has an organic coating made of fluorine resin, siloxane resin, engineering plastic, super engineering plastic, etc., or a combination thereof, which is excellent in releasability and slipperiness, from the viewpoint of preventing adhesion of the skin care agent. May be applied.
　以下、本発明の吸収性物品の製造方法を、その好ましい第５実施態様に基づき図面を参照しながら説明する。
　第５実施態様で製造する一例としての使い捨ておむつ１Ａは、図７に示すように、液透過性の表面シート１０、液不透過性又は撥水性の裏面シート１１及びこれら両シート間に配置された液保持性の吸収体１２を備えている。
　また、使い捨ておむつ１Ａは、図７に示すように、その長手方向（図中のＹ方向）に、着用時に着用者の背中側に配される背側部Ａ、股間部に配される股下部Ｃ及び腹側に配される腹側部Ｂを有している。
　図７に示すように、使い捨ておむつ１Ａの長手方向（Ｙ方向）の両側それぞれには、撥水性不織布からなるサイドシート１３が、表面シート１０の両側部を覆うように配されている。表面シート１０及び各サイドシート１３は、吸収体１２の周縁より外方において、裏面シート１１に接合されている。吸収体１２の幅方向（図中のＸ方向）外方のレッグフラップ部には、レッグギャザー形成用の弾性部材１４が配されており、上述したサイドシート１３のおむつ幅方向（Ｘ方向）中央側の側縁には、立体ギャザー形成用の弾性部材１５が配されている。 Hereinafter, the manufacturing method of the absorbent article of this invention is demonstrated, referring drawings based on the preferable 5th embodiment.
As shown in FIG. 7, a disposable diaper 1A as an example manufactured in the fifth embodiment is disposed between a liquid-permeable top sheet 10, a liquid-impermeable or water-repellent back sheet 11, and both the sheets. A liquid-retaining absorber 12 is provided.
In addition, as shown in FIG. 7, the disposable diaper 1A has, in its longitudinal direction (Y direction in the figure), a back side portion A disposed on the wearer's back side when worn and a crotch portion disposed on the crotch portion. C and a ventral side B arranged on the ventral side.
As shown in FIG. 7, side sheets 13 made of a water-repellent nonwoven fabric are disposed on both sides in the longitudinal direction (Y direction) of the disposable diaper 1 </ b> A so as to cover both side portions of the topsheet 10. The top sheet 10 and each side sheet 13 are joined to the back sheet 11 outside the periphery of the absorber 12. An elastic member 14 for forming leg gathers is disposed on the outer leg flap portion of the absorbent body 12 in the width direction (X direction in the figure), and the diaper width direction (X direction) center of the side seat 13 described above An elastic member 15 for forming a three-dimensional gather is disposed on the side edge on the side.
　図７に示すように、使い捨ておむつ１Ａは、いわゆる展開型のおむつであり、背側部Ａの長手方向（Ｙ方向）の両側縁部それぞれに設けられたファスニングテープ１６，１６を、腹側部Ｂの外面に設けられたランディングテープ１７に止着することにより、身体に装着して使用する。なお、液不透過性又は撥水性の裏面シート１１、吸収体１２、撥水性のサイドシート１３、ファスニングテープ１６、ランディングテープ１７、弾性部材１４，１５としては、それぞれ、この種の物品に使用されているものを特に制限なく使用することができる。吸収体１２としては、パルプ繊維等の繊維材料からなる繊維集合体又はこれに吸水性ポリマーの粒子等を保持したものを、ティッシュペーパや透水性の不織布で被覆してなるもの等を用いることができる。 As shown in FIG. 7, the disposable diaper 1 </ b> A is a so-called unfolded diaper, and fastening tapes 16, 16 provided on both side edges in the longitudinal direction (Y direction) of the dorsal side A are connected to the ventral side part. By attaching to the landing tape 17 provided on the outer surface of B, it is worn on the body and used. The liquid-impermeable or water-repellent back sheet 11, the absorbent body 12, the water-repellent side sheet 13, the fastening tape 16, the landing tape 17, and the elastic members 14 and 15 are used for this type of article. Can be used without particular limitation. As the absorbent body 12, a fiber aggregate made of a fiber material such as pulp fiber, or a substance obtained by covering the fiber aggregate with water absorbent polymer particles, etc., with tissue paper or a water-permeable nonwoven fabric may be used. it can.
　使い捨ておむつ１Ａの表面シート１０としては、不織布やそれに多数の開孔を形成したもの、多数の開孔を形成したフィルム等を用いることができ、後述するスキンケア剤１８を保持する観点から、多層構造の不織布や凹凸構造の不織布を用いることが好ましい。 As the surface sheet 10 of the disposable diaper 1A, a non-woven fabric, a material in which a large number of apertures are formed, a film in which a large number of apertures are formed, and the like can be used. It is preferable to use a non-woven fabric or an uneven structure nonwoven fabric.
　凹凸構造の表面シート１０としては、具体的には、図８に示すように、使い捨ておむつ１Ａの肌当接面（着用者の肌側に向けられる面）を形成する上層不織布１０１と、吸収体１２側に向けられる面を形成する下層不織布１０２とからなる２層構造の積層不織布が挙げられ、凹凸構造の表面シート１０は、上層不織布１０１と下層不織布１０２とを多数の接合部１０３にて部分的に接合して形成される。上層の不織布１０１は、接合部１０３以外の部分において着用者の肌側に向けて突出しており、内部が空洞となっている多数の凸部１０４を形成している。図８に示すように、凸部１０４及び接合部１０３は、交互に、且つＸ方向及びＹ方向に多列をなすように配置されている。上層不織布１０１及び下層不織布１０２は、実質的に伸縮しない不織布からなる。図８に示すように、凸部１０４は、全体として稜線が丸みを帯びた扁平な直方体又は截頭四角錐体となっており、一方、接合部１０３は矩形となっている。図中のＹ方向は、後述する帯状の表面シート１００の搬送方向と一致し、また表面シート１０が使い捨ておむつ１Ａ（吸収性物品）に組み込まれたときの該吸収性物品の長手方向とも一致している。凹凸構造の表面シート１０としては、図８に示すシート以外に、特開２００２－１８７２２８号公報、特開２００４－３４５３５７号公報、特開２００４－２７５２９６号公報に記載のシート等を用いることもできる。 Specifically, as the topsheet 10 of the concavo-convex structure, as shown in FIG. 8, an upper nonwoven fabric 101 that forms a skin contact surface (a surface directed toward the wearer's skin) of the disposable diaper 1 </ b> A, and an absorbent body A laminated nonwoven fabric having a two-layer structure composed of a lower layer nonwoven fabric 102 that forms a surface directed toward the 12 side can be mentioned. Are joined together. The non-woven fabric 101 of the upper layer protrudes toward the wearer's skin side at a portion other than the joint portion 103, and forms a large number of convex portions 104 that are hollow inside. As shown in FIG. 8, the convex portions 104 and the joint portions 103 are arranged alternately and in multiple rows in the X direction and the Y direction. The upper layer nonwoven fabric 101 and the lower layer nonwoven fabric 102 are made of a nonwoven fabric that does not substantially expand and contract. As shown in FIG. 8, the convex portion 104 is a flat rectangular parallelepiped or truncated quadrangular pyramid with rounded ridgelines as a whole, while the joint portion 103 is rectangular. The Y direction in the figure coincides with the conveyance direction of the band-shaped topsheet 100 described later, and also coincides with the longitudinal direction of the absorbent article when the topsheet 10 is incorporated in the disposable diaper 1A (absorbent article). ing. As the surface sheet 10 having the concavo-convex structure, in addition to the sheet shown in FIG. 8, the sheets described in JP-A Nos. 2002-187228, 2004-345357, and 2004-275296 can also be used. .
　使い捨ておむつ１Ａの表面シート１０には、着用者の肌側に向けられる面に、着用者の肌に対して所定の効能を有するスキンケア剤１８が施されている。具体的には、使い捨ておむつ１Ａにおける表面シート１０の主に上層不織布１０１に、スキンケア剤１８が塗布されている。使い捨ておむつ１Ａは、表面シート１０にスキンケア剤１８が施されていることで、着用者の肌のかぶれ、炎症等が効果的に抑制・治癒される。 A skin care agent 18 having a predetermined effect on the skin of the wearer is applied to the surface sheet 10 of the disposable diaper 1A on the surface facing the wearer's skin. Specifically, the skin care agent 18 is applied mainly to the upper nonwoven fabric 101 of the topsheet 10 in the disposable diaper 1A. In the disposable diaper 1A, the skin care agent 18 is applied to the top sheet 10, so that the wearer's skin irritation, inflammation, and the like are effectively suppressed and cured.
　本発明に用いるスキンケア剤１８とは、着用者の肌に対して、かぶれ、炎症等を抑制・治癒する効能を有するスキンケア成分を含有し、２０℃で半固体又は固体のものを意味する。ここで、２０℃で半固体又は固体のスキンケア剤には、２０℃においてスキンケア成分自体で半固体又は固体となるもののみならず、２０℃においてスキンケア成分自体では固体とならないが、そのスキンケア成分に固定化剤を混合することにより２０℃で半固体又は固体となるものが含まれる。スキンケア剤１８としては、例えば、化粧品の分野においてエモリエント剤として用いられているもの等を用いることができる。ここで、半固体とは、外力や熱が加わることによって可塑性（流動性）が出現するものや、外力が加わらなくても可塑性（流動性）を有し、該流動性の低いものから高いものまでが含まれる。２０℃で半固体又は固体のスキンケア剤１８の具体例としては、石油系炭化水素、動植物性油脂、動植物性ロウ、脂肪酸エステル系化合物、アルキルエトキシレート、脂肪酸エステルエトキシレート、脂肪アルコール、ポリシロキサン等が挙げられる。 The skin care agent 18 used in the present invention means a semi-solid or solid at 20 ° C. containing a skin care ingredient having an effect of suppressing / healing rash, inflammation and the like on the wearer's skin. Here, the semi-solid or solid skin care agent at 20 ° C. includes not only a skin care component itself that becomes a semi-solid or solid at 20 ° C., but also a skin care component itself that does not become a solid at 20 ° C. Those that become semi-solid or solid at 20 ° C. by mixing the immobilizing agent are included. As skin care agent 18, what is used as an emollient agent in the field of cosmetics etc. can be used, for example. Here, the semi-solid means that plasticity (fluidity) appears when external force or heat is applied, or that has plasticity (fluidity) even when no external force is applied, and is low to high fluidity. Up to. Specific examples of the semi-solid or solid skin care agent 18 at 20 ° C. include petroleum hydrocarbons, animal and vegetable oils and fats, animal and vegetable waxes, fatty acid ester compounds, alkyl ethoxylates, fatty acid ester ethoxylates, fatty alcohols, polysiloxanes, and the like. Is mentioned.
　また、各種エモリエント剤として、例えば、ジアミド誘導体（ＢＲＳ）、流動パラフィン、シリコーンオイル、動植物油（オリーブ油、ホオバ油、ベニバナ油、スクワランおよびスクワレン等）、モノグリセライド、ジグリセライド、トリグリセライド、脂肪族エーテル（ミリスチル－１，３－ジメチルブチルエーテル、パルミチル－１，３－ジメチルブチルエーテル、ステアリル－１，３－ジメチルブチルエーテル、パルミチル－１，３－メチルプロピルエーテル、ステアリル－１，３－メチルプロピルエーテル等）、および、イソステアリル－コレステロールエステル等を単独で、或いは２種以上を適宜組み合わせて用いることができる。 Examples of various emollients include diamide derivatives (BRS), liquid paraffin, silicone oil, animal and vegetable oils (olive oil, jojoba oil, safflower oil, squalane and squalene, etc.), monoglycerides, diglycerides, triglycerides, aliphatic ethers (myristyl- 1,3-dimethylbutyl ether, palmityl-1,3-dimethylbutyl ether, stearyl-1,3-dimethylbutyl ether, palmityl-1,3-methylpropyl ether, stearyl-1,3-methylpropyl ether, etc.) and iso Stearyl-cholesterol ester or the like can be used alone or in appropriate combination of two or more.
　スキンケア成分の粘度（融点）が低い場合には、上述したように、固定化剤を加えることにより、全体（混合物）として、２０℃で半固体又は固体となるスキンケア剤１８に調整できる。固定化剤としては、Ｃ14－Ｃ22脂肪アルコール、Ｃ12－Ｃ22脂肪酸、平均のエトキシル化度が２から約３０であるＣ12－Ｃ22脂肪アルコールエトキシレート、及びこれらの混合物からなる群から選ばれた一つの要素が含まれる。好ましい固定化剤には、Ｃ16－Ｃ18脂肪アルコールが含まれ、更に好ましくは、セチルアルコール、ステアリルアルコール、及びこれらの混合物からなる群から選ばれた一つの要素が含まれる。これらのうち、セチルアルコールおよびステアリルアルコールの混合物が特に好ましい。好ましいその他の固定化剤には、Ｃ16－Ｃ18脂肪酸が含まれ、パルミチン酸、ステアリン酸、及びこれらの混合物からなる群から選ばれた一つの要素が含まれる。これらのうち、パルミチン酸およびステアリン酸の混合物が特に好ましい。さらに、好ましいその他の固定化剤には、平均のエトキシル化度が約５～約２０であるＣ16－Ｃ18脂肪アルコールエトキシレートが含まれる。脂肪アルコール、脂肪酸および脂肪アルコールは、直鎖であることが好ましい。 When the viscosity (melting point) of the skin care component is low, it can be adjusted to a skin care agent 18 that becomes a semi-solid or solid at 20 ° C. as a whole (mixture) by adding a fixing agent as described above. The fixing agent, C 14 -C 22 fatty alcohols, C 12 -C 22 fatty acids, ethoxylated degree of average 2 to about 30 C 12 -C 22 fatty alcohol ethoxylates, and mixtures thereof One element selected from is included. Preferred immobilizing agents include C 16 -C 18 fatty alcohols, more preferably one element selected from the group consisting of cetyl alcohol, stearyl alcohol, and mixtures thereof. Of these, a mixture of cetyl alcohol and stearyl alcohol is particularly preferred. Other preferred immobilizing agents include C 16 -C 18 fatty acids and include one element selected from the group consisting of palmitic acid, stearic acid, and mixtures thereof. Of these, a mixture of palmitic acid and stearic acid is particularly preferred. Further preferred other immobilizing agents include C 16 -C 18 fatty alcohol ethoxylates having an average degree of ethoxylation of about 5 to about 20. The fatty alcohol, fatty acid and fatty alcohol are preferably linear.
　また、スキンケア剤１８には、固定化剤の他に、２０℃で半固体又は固体となる性質を阻害しない限り、帯電防止剤、酸化防止剤、ｐＨ調整剤、平滑剤、乳化剤、抗菌剤、防黴剤、香料等を配合することもできる。 In addition to the fixing agent, the skin care agent 18 includes an antistatic agent, an antioxidant, a pH adjuster, a smoothing agent, an emulsifier, an antibacterial agent, as long as the property of becoming a semi-solid or solid at 20 ° C. is not impaired. An antifungal agent, a fragrance | flavor, etc. can also be mix | blended.
　次に、本発明の第５実施態様として、使い捨ておむつ１Ａの好ましい製造方法について図９を参照して説明する。本実施態様の製造方法は、表面シート１０にスキンケア剤１８が塗布された吸収性物品の一例である使い捨ておむつ１Ａを、連続的に製造する使い捨ておむつの製造方法である。尚、使い捨ておむつ１Ａの長手方向（Ｙ方向）と搬送方向（ｙ方向）は同じ方向であり、幅方向（Ｘ方向）は搬送方向（ｙ方向）と直交する方向であり、図中のＺ方向は、搬送する使い捨ておむつ連続体１００の厚み方向である。 Next, as a fifth embodiment of the present invention, a preferred manufacturing method of the disposable diaper 1A will be described with reference to FIG. The manufacturing method of this embodiment is a manufacturing method of the disposable diaper which manufactures continuously the disposable diaper 1A which is an example of the absorbent article by which the skin care agent 18 was apply | coated to the surface sheet 10. FIG. The longitudinal direction (Y direction) and the transport direction (y direction) of the disposable diaper 1A are the same direction, and the width direction (X direction) is a direction orthogonal to the transport direction (y direction), and is the Z direction in the figure. These are the thickness directions of the disposable diaper continuous body 100 to convey.
　第５実施態様の製造方法の実施に用いられる使い捨ておむつ製造装置２Ａは、図９に示すように、表面シート１０を有する使い捨ておむつ１Ａが長手方向に連続した使い捨ておむつ連続体１００に、スキンケア剤１８を溶融させた状態で塗布する塗布装置４と、塗布されたスキンケア剤１８を流体で冷却する冷却手段５と、スキンケア剤１８の塗布された使い捨ておむつ連続体１００を折り畳む折り畳み手段６と、折り畳まれた使い捨ておむつ連続体１００に折り癖を付与する加圧手段７と、使い捨ておむつ連続体１００を使い捨ておむつ１Ａ毎に切断する切断手段８とを具備している。図９，図１０に記載のロール３は、使い捨ておむつ製造装置２Ａにおいて、使い捨ておむつ連続体１００を搬送する搬送ロールの一部である。図１０に記載のロール３ａは、使い捨ておむつ製造装置２Ａにおいて、表面シート１０、裏面シート１１、吸収体１２、サイドシート１３を一体化するロールである。 As shown in FIG. 9, the disposable diaper manufacturing apparatus 2 </ b> A used for carrying out the manufacturing method of the fifth embodiment has a skin care agent 18 in a disposable diaper continuous body 100 in which a disposable diaper 1 </ b> A having a top sheet 10 is continuous in the longitudinal direction. Device 4 in a molten state, cooling means 5 for cooling the applied skin care agent 18 with fluid, folding means 6 for folding the disposable diaper continuous body 100 to which the skin care agent 18 is applied, and folding In addition, a pressurizing means 7 for applying a crease to the disposable diaper continuous body 100 and a cutting means 8 for cutting the disposable diaper continuous body 100 for each disposable diaper 1A are provided. The roll 3 described in FIGS. 9 and 10 is a part of a transport roll that transports the disposable diaper continuous body 100 in the disposable diaper manufacturing apparatus 2A. A roll 3a illustrated in FIG. 10 is a roll that integrates the top sheet 10, the back sheet 11, the absorbent body 12, and the side sheet 13 in the disposable diaper manufacturing apparatus 2A.
　ロール３ａは、図１０に示すように、一対のロールからなるニップロールである。また、搬送ロールの一部であるロール３は、図１０に示すように、一対のロールからなるニップタイプのフィードロールであり、ロール３ａの下流側に配されている。フィードロールとしては、ニップタイプのフィードロール以外に、一般的な、オメガ状に各ロールを配置したオメガタイプのフィードロールやロールの表面摩擦を高めたフィードロール等を利用することができる。 The roll 3a is a nip roll comprising a pair of rolls as shown in FIG. Further, as shown in FIG. 10, the roll 3 which is a part of the transport roll is a nip type feed roll made up of a pair of rolls, and is arranged on the downstream side of the roll 3a. As the feed roll, in addition to the nip type feed roll, a general omega type feed roll in which the rolls are arranged in an omega shape, a feed roll with an increased surface friction of the roll, or the like can be used.
　塗布装置４は、図９，図１０に示すように、ロール３の下流側であって、使い捨ておむつ連続体１００の表面シート１０側の上部（Ｚ方向の上方の位置）に配されている。塗布装置４は、図１０に示すように、塗布装置４の先端にスキンケア剤１８を吐出するノズル４１と、塗布装置４の内部に、溶融させた状態のスキンケア剤１８を圧縮空気により供給する供給路（不図示）と、供給路（不図示）と接続されており、２０℃で半固体又は固体のスキンケア剤１８を溶融する溶融タンク（不図示）とを具備している。 As shown in FIGS. 9 and 10, the coating device 4 is disposed on the downstream side of the roll 3 and on the upper side (the upper position in the Z direction) of the disposable diaper continuous body 100 side. As shown in FIG. 10, the coating apparatus 4 supplies a nozzle 41 that discharges the skin care agent 18 to the tip of the coating apparatus 4 and supplies the melted skin care agent 18 to the inside of the coating apparatus 4 by compressed air. A passage (not shown) and a supply tank (not shown) are connected to each other, and a melting tank (not shown) for melting the semi-solid or solid skin care agent 18 at 20 ° C. is provided.
　塗布装置４により使い捨ておむつ連続体１００の表面シート１０に、その外面側からスキンケア剤１８が塗布される。塗布装置４は、溶融させた状態のスキンケア剤１８を、微粒子の形状で表面シート１０における目的とする部位、例えば、一対の立体ギャザーが内側に倒されている場合における立体ギャザーの自由端同士の間に位置する表面シートの部位等に、均一に塗布するという観点から、５０℃以上の温風でスプレー塗工することが好ましく、６０℃以上の温風でスプレー塗工することが更に好ましい。ここで、温風の温度とは、塗布装置４のノズル４１から溶融させた状態のスキンケア剤１８を吐出する際の空気の温度を意味する。塗布装置４により塗布されるスキンケア剤１８は、その塗布坪量に特に制限はないが、吸収体１２の吸収性能への影響、スキンケア効果、風合い等の観点から、０．１～２．０ｇ／ｍ2の範囲内とすることが好ましく、０．２～１．０ｇ／ｍ2の範囲内とすることが更に好ましい。この塗布量は、スキンケア剤１８を塗布する前と塗布した後の塗布対象物の重量差から求めることができる。また、表面シート１０にスキンケア剤１８を均一に塗布する観点から、塗布装置４のノズル４１と、搬送される使い捨ておむつ連続体１００の表面シート１０との間隔は、１ｍｍ～２００ｍｍであることが好ましく、１０ｍｍ～１００ｍｍであることが更に好ましい。尚、表面シート１０として、上述した凹凸構造の不織布を用いる場合には、上層不織布１０２側からスキンケア剤１８が塗布される。 The skin care agent 18 is applied to the top sheet 10 of the disposable diaper continuous body 100 from the outer surface side by the coating device 4. The coating device 4 is configured to apply the melted skin care agent 18 in the form of fine particles to a target portion of the top sheet 10, for example, between a pair of three-dimensional gathers at the free ends of a three-dimensional gather. From the viewpoint of uniformly applying to a portion of the surface sheet positioned between them, spray coating with hot air of 50 ° C. or higher is preferable, and spray coating with hot air of 60 ° C. or higher is more preferable. Here, the temperature of warm air means the temperature of air when the skin care agent 18 in a melted state is discharged from the nozzle 41 of the coating device 4. The skin care agent 18 applied by the application device 4 is not particularly limited in the application basis weight, but from the viewpoint of the influence on the absorption performance of the absorbent body 12, the skin care effect, the texture, etc., 0.1 to 2.0 g / It is preferably in the range of m 2 , and more preferably in the range of 0.2 to 1.0 g / m 2 . This application amount can be obtained from the weight difference between the application object before and after applying the skin care agent 18. Further, from the viewpoint of uniformly applying the skin care agent 18 to the top sheet 10, the distance between the nozzle 41 of the coating device 4 and the top sheet 10 of the continuous disposable diaper 100 to be transported is preferably 1 mm to 200 mm. More preferably, it is 10 mm to 100 mm. In addition, when using the nonwoven fabric of the uneven structure mentioned above as the surface sheet 10, the skin care agent 18 is apply | coated from the upper layer nonwoven fabric 102 side.
　使い捨ておむつ製造装置２Ａにおいては、冷却手段５は、使い捨ておむつ連続体１００を搬送する際の空気流により冷却する搬送手段５１と、塗布装置４の下流側に配され、空気を送風する送風手段５２とを具備している。使い捨ておむつ製造装置２Ａにおいては、送風手段５２は、図９に示すように、スキンケア剤１８の塗布された表面シート１０側に、使い捨ておむつ連続体１００を折り畳む後述する折り畳みプレート６１の前に配されている。尚、使い捨ておむつ製造装置２Ａにおいては、スキンケア剤１８の塗布された表面シート１０側に使い捨ておむつ連続体１００を最初に折り畳む折り畳み手段が、折り畳みプレート６１であるが、折り畳みプレート６１よりも上流側で、スキンケア剤１８の塗布された表面シート１０側に折り畳む設備があれば、その設備の前に、送風手段５２は配される。 In the disposable diaper manufacturing apparatus 2A, the cooling means 5 includes a transport means 51 that cools by the air flow when transporting the disposable diaper continuous body 100, and a blower means 52 that is arranged on the downstream side of the coating apparatus 4 and blows air. It is equipped with. In the disposable diaper manufacturing apparatus 2 </ b> A, as shown in FIG. 9, the air blowing means 52 is disposed in front of a folding plate 61 (to be described later) that folds the disposable diaper continuous body 100 on the surface sheet 10 side to which the skin care agent 18 is applied. ing. In the disposable diaper manufacturing apparatus 2 </ b> A, the folding means for first folding the disposable diaper continuous body 100 on the surface sheet 10 side to which the skin care agent 18 is applied is the folding plate 61, but on the upstream side of the folding plate 61. If there is a facility for folding the skin care agent 18 on the surface sheet 10 side, the blowing means 52 is disposed in front of the facility.
　塗布されたスキンケア剤１８を空気冷却する搬送手段５１とは、使い捨ておむつ連続体１００を搬送する上述したロール３を一部に含む搬送ロールのことであり、搬送時に、使い捨ておむつに対して相対的に発生する風を直接利用してスキンケア剤を冷却固化させるという観点から、使い捨ておむつ連続体１００を、搬送ロールによって、８０ｍ／ｍｉｎ以上の速度で搬送することが好ましく、１００ｍ／ｍｉｎ以上の速度で搬送することが更に好ましい。 The transport means 51 that air-cools the applied skin care agent 18 is a transport roll that includes the above-described roll 3 that transports the disposable diaper continuum 100, and is relative to the disposable diaper during transport. From the viewpoint of cooling and solidifying the skin care agent directly using the air generated in the skin, it is preferable to transport the disposable diaper continuous body 100 at a speed of 80 m / min or more by a transport roll, and at a speed of 100 m / min or more. More preferably, it is conveyed.
　送風手段５２は、使い捨ておむつ連続体１００の表面シート１０側に空気を送風して塗布されたスキンケア剤１８を固体化する装置である。尚、裏面シート１１に撥水性の不織布等を用い使い捨ておむつ連続体１００が通気性を有する場合には、使い捨ておむつ連続体１００を挟んで、送風手段５２と対向する位置にサクションボックス（不図示）を設け、送風手段５２により送風した空気を、サクションボックス（不図示）で吸引することにより、使い捨ておむつ連続体１００の厚み方向（Ｚ方向の下方）に空気を流して冷却してもよい。上記吸引工程を設けることで、空気流がサクションボックスからの吸引によって、表面シート１０の厚み方向に空気が貫通するため、冷却効率が高くなる。特に表面シート１０として厚みのある凹凸構造の不織布を用いる場合に対して、吸収体１２から離間しているために冷却風が通り抜けやすく効率よく冷却できる。さらに吸引により塗布されたスキンケア剤１８は表面シート１０の構成繊維内に入り込み易くなり吸収性物品（使い捨ておむつ１Ａ）の不必要な部位に一層付着しにくくなり、使用する時には体温で融けて表面シート１０上に滲み出し身体に充分なスキンケア効果を与えることができる。特に表面シート１０として凹凸構造の不織布を用いる場合には、サクションボックスでの吸引を強くすることで凸部内にスキンケア剤１８運ばれて冷却固化されるために吸収体１２に吸収されることなしに比較的多くのスキンケア剤１８を表面シート１０に担持させることが可能であり、しかも吸収性物品（使い捨ておむつ１Ａ）の不必要な部位に一層付着しにくくなる。このようにすることで、体温により徐々に融かされたスキンケア剤が着用者に供給されるためスキンケア剤の効果を長時間与えることができる。尚、使い捨ておむつ製造装置２Ａにおいては、コスト、供給装置の定期メンテナンスや装置汚染等メンテナンス性の観点から、送風手段５２においては空気を送風しているが、空気以外にも、ガス、水等の流体を噴射してもよい。 The air blowing means 52 is a device that solidifies the skin care agent 18 applied by blowing air to the surface sheet 10 side of the disposable diaper continuum 100. In addition, when the disposable diaper continuous body 100 has air permeability using a water-repellent nonwoven fabric or the like for the back sheet 11, a suction box (not shown) is provided at a position facing the blowing means 52 with the disposable diaper continuous body 100 interposed therebetween. The air blown by the blowing means 52 may be sucked with a suction box (not shown) to cool the disposable diaper continuous body 100 in the thickness direction (downward in the Z direction). By providing the suction step, the air flows through in the thickness direction of the topsheet 10 by suction from the suction box, so that the cooling efficiency is increased. In particular, when a nonwoven fabric having a thick concavo-convex structure is used as the top sheet 10, the cooling air can easily pass through because it is separated from the absorber 12 and can be cooled efficiently. Furthermore, the skin care agent 18 applied by suction is more likely to enter the constituent fibers of the surface sheet 10 and is less likely to adhere to unnecessary parts of the absorbent article (disposable diaper 1A), and melts at body temperature when used. 10 can ooze out and give a sufficient skin care effect to the body. In particular, when using a non-woven fabric having a concavo-convex structure as the surface sheet 10, the skin care agent 18 is carried into the convex portion by being strongly sucked in the suction box, and is cooled and solidified without being absorbed by the absorbent body 12. A relatively large amount of the skin care agent 18 can be carried on the top sheet 10, and it is more difficult to adhere to unnecessary parts of the absorbent article (disposable diaper 1A). By doing in this way, since the skin care agent melt | dissolved gradually with body temperature is supplied to a wearer, the effect of a skin care agent can be given for a long time. In the disposable diaper manufacturing apparatus 2A, air is blown in the blowing means 52 from the viewpoint of maintenance performance such as cost, periodic maintenance of the supply apparatus and apparatus contamination, but in addition to air, gas, water, etc. A fluid may be ejected.
　また、使い捨ておむつ１Ａの有する裏面シート１１に透湿性のフィルムを用いる場合には、フィードロール３ａでは裏面シート１１を供給せずに、スキンケア剤１８を表面シート１０側上部に塗布した後に、送風手段５２により送風した空気を、サクションボックスで吸引することにより、使い捨ておむつ連続体１００の前駆体の厚み方向（Ｚ方向の下方）に空気を流して冷却してもよい。その後、裏面シート１１を、スキンケア剤１８を塗布した使い捨ておむつ連続体１００の前駆体とフィードロールで一体化させて使い捨ておむつ連続体１００構成させてもよい。 Moreover, when using a moisture-permeable film for the back surface sheet 11 which the disposable diaper 1A has, after supplying the skin care agent 18 on the top side of the top sheet 10 without supplying the back surface sheet 11 with the feed roll 3a, the blowing means The air blown by 52 may be cooled by sucking it with a suction box so that air flows in the thickness direction of the precursor of the disposable diaper continuous body 100 (downward in the Z direction). Thereafter, the backsheet 11 may be integrated with the precursor of the disposable diaper continuum 100 coated with the skin care agent 18 with a feed roll to form the disposable diaper continuum 100.
　送風手段５２は、図１０に示すように、スキンケア剤１８の塗布された表面シート１０の上部（Ｚ方向の上方の位置）にノズル（不図示）を配しており、使い捨ておむつ連続体１００の表面シート１０上に塗布されたスキンケア剤１８を、吹き飛ばさず、均一に冷却する観点から、ノズル（不図示）と、搬送される使い捨ておむつ連続体１００の表面シート１０との間隔は、１ｍｍ～２００ｍｍであることが好ましく、１０ｍｍ～１００ｍｍであることが更に好ましい。また、同様の観点から、ノズル（不図示）から噴射する空気の送風量は、０．１～１０ｍ3／ｍｉｎであることが好ましく、１～５ｍ3／ｍｉｎであることが更に好ましい。また、同様の観点から、ノズル（不図示）から送風する空気の圧力は、０．０１～１．０ＭＰａであることが好ましく、０．１～０．５ＭＰａであることが更に好ましい。また、同様の観点から、ノズル（不図示）から送風される空気の出口速度は、１～１００ｍｍ／ｓであることが好ましく、１０～５０ｍｍ／ｓであることが更に好ましい。送風する空気の温度としては、スキンケア剤１８の融点より低いことが好ましく、融点から１０℃以上低いことが更に好ましく、融点から２０℃以上低いことが特に好ましい。サクションボックス（不図示）で空気を吸引する際の負圧は、ミスト化したスキンケア剤１８を吸収性物品に集めて均一に塗布する観点から、０．０１～１．０ＭＰａであることが好ましく、０．１～０．５ＭＰａであることが更に好ましい。 As shown in FIG. 10, the air blowing means 52 is provided with a nozzle (not shown) on the top (upper position in the Z direction) of the top sheet 10 to which the skin care agent 18 is applied. From the viewpoint of uniformly cooling the skin care agent 18 applied on the top sheet 10 without blowing off, the distance between the nozzle (not shown) and the top sheet 10 of the continuous disposable diaper 100 to be conveyed is 1 mm to 200 mm. It is preferably 10 mm to 100 mm. From the same point of view, the amount of air blown from a nozzle (not shown) is preferably 0.1 to 10 m 3 / min, and more preferably 1 to 5 m 3 / min. From the same viewpoint, the pressure of air blown from a nozzle (not shown) is preferably 0.01 to 1.0 MPa, and more preferably 0.1 to 0.5 MPa. From the same viewpoint, the outlet speed of air blown from a nozzle (not shown) is preferably 1 to 100 mm / s, and more preferably 10 to 50 mm / s. The temperature of the air to be blown is preferably lower than the melting point of the skin care agent 18, more preferably 10 ° C. or more lower than the melting point, and particularly preferably 20 ° C. or lower lower than the melting point. The negative pressure when sucking air with a suction box (not shown) is preferably 0.01 to 1.0 MPa from the viewpoint of collecting and evenly applying the mist skin care agent 18 to the absorbent article, More preferably, the pressure is 0.1 to 0.5 MPa.
　使い捨ておむつ製造装置２Ａにおいては、折り畳み手段６は、図９に示すように、スキンケア剤１８の塗布された使い捨ておむつ連続体１００を表面シート１０側に、最初に折り畳むものであり、送風手段５２の下流側に配されている。折り畳み手段６は、図９に示すように、使い捨ておむつ連続体１００の搬送方向（ｙ方向）の両側部１００ａ，１００ａに設けられた一対の折り畳みプレート６１，６１を具備している。一対の折り畳みプレート６１，６１は、アルミニウム合金又は鉄鋼等の金属性の板状のものであり、図９に示すように、搬送方向（ｙ方向）の上流側から下流側に向かってその間隔が漸次狭くなるように配されている。 In the disposable diaper manufacturing apparatus 2A, as shown in FIG. 9, the folding means 6 first folds the disposable diaper continuous body 100 to which the skin care agent 18 is applied on the surface sheet 10 side. It is arranged downstream. As shown in FIG. 9, the folding means 6 includes a pair of folding plates 61 and 61 provided on both side portions 100 a and 100 a in the transport direction (y direction) of the disposable diaper continuous body 100. The pair of folding plates 61, 61 is a metal plate such as an aluminum alloy or steel, and as shown in FIG. 9, the distance between the upstream and downstream sides in the transport direction (y direction) is as shown in FIG. It is arranged to gradually narrow.
　加圧手段７は、図９に示すように、折り畳み手段６の下流側に配されており、一対のロール７１からなるニップタイプの加圧ロールを備えている。一対の加圧ロール７１は、使い捨ておむつ連続体１００の幅方向（Ｘ方向）に亘って配されている。 As shown in FIG. 9, the pressurizing unit 7 is arranged on the downstream side of the folding unit 6 and includes a nip type pressurizing roll including a pair of rolls 71. The pair of pressure rolls 71 is disposed across the width direction (X direction) of the disposable diaper continuous body 100.
　切断手段８は、図９に示すように、加圧手段７の下流側に配されており、使い捨ておむつ連続体１００の幅方向（Ｘ方向）に亘って配された刃８２を有するカットロール８１と、カットロール８１の刃に対向する位置にフラットロール（不図示）とを備えている。 As shown in FIG. 9, the cutting means 8 is arranged on the downstream side of the pressurizing means 7, and has a cutting roll 81 having a blade 82 arranged over the width direction (X direction) of the disposable diaper continuous body 100. And a flat roll (not shown) at a position facing the blade of the cut roll 81.
　次に、上述した使い捨ておむつ製造装置２Ａを用いて、本発明の吸収性物品の製造方法を、図９，図１０を参照しながら説明する。 Next, a method for manufacturing an absorbent article according to the present invention will be described using the disposable diaper manufacturing apparatus 2A described above with reference to FIGS.
　　まず、表面シート１０の連続体と、裏面シート１１の連続体とを、搬送方向（ｙ方向）に断続的に供給される複数個の吸収体１２，１２・・・を挟持するように、固定して連続体を形成する。その連続体には、搬送方向（ｙ方向）の両側部それぞれに沿って、レッグギャザー形成用の弾性部材１４（図１０では図示省略）を搬送方向（ｙ方向）に伸長させた状態で、表面シート１０と裏面シート１１との間に常法に従って固定する。また、前記連続体の搬送方向（ｙ方向）の両側部それぞれに沿って、サイドシート１３の連続体を常法に従って固定する。前記固定には一対のニップロール３ａが用いられる。また、前記連続体に積層する前の各サイドシート１３の連続体の幅方向（Ｘ方向）内方側には、立体ギャザー多形成用の弾性部材１５を搬送方向（ｙ方向）に伸長させた状態で、常法に従って固定されている。その後、後述する塗布装置４より前に、ファスニングテープ１６、ランディングテープ１７を所定の位置に配し、所定の位置でレッグカットを施すことによって、使い捨ておむつ１Ａが搬送方向（ｙ方向）に連続した使い捨ておむつ連続体１００を製造する（図１０参照）。この使い捨ておむつ連続体１００を、図９に示すように、ロール３を一部に含む搬送ロールにより、ｙ方向に搬送する。 First, the continuum of the top sheet 10 and the continuum of the back sheet 11 are fixed so as to sandwich a plurality of absorbers 12, 12... Intermittently supplied in the transport direction (y direction). To form a continuum. In the continuous body, the elastic members 14 for forming leg gathers (not shown in FIG. 10) are extended in the transport direction (y direction) along both sides of the transport direction (y direction) It fixes between the sheet | seat 10 and the back surface sheet 11 according to a conventional method. Moreover, the continuous body of the side sheet 13 is fixed according to a conventional method along each of both side portions in the conveyance direction (y direction) of the continuous body. A pair of nip rolls 3a is used for the fixing. In addition, on the inner side in the width direction (X direction) of the continuous body of the side sheets 13 before being stacked on the continuous body, the elastic member 15 for forming a three-dimensional gather is extended in the transport direction (y direction). In state, fixed according to conventional methods. Thereafter, the disposable diaper 1 </ b> A is continuous in the transport direction (y direction) by disposing the fastening tape 16 and the landing tape 17 at predetermined positions and performing leg cutting at the predetermined positions before the coating device 4 described later. The disposable diaper continuous body 100 is manufactured (see FIG. 10). As shown in FIG. 9, the disposable diaper continuous body 100 is transported in the y direction by a transport roll including part of the roll 3.
　表面シート１０が、図８に示すような凹凸構造の不織布である場合には、例えば、周面に接合部１０３に対応する凸部を備えたエンボスロールと、該凸部と噛み込み状態となる凸部を有するロールとで上層不織布１０１連続体を噛み込で凸部に沿った賦型を行い、エンボスロールに上層不織布１０１連続体を維持した状態で、エンボスロールに対向する表面が平滑なフラットロールとの間に、上層不織布１０１連続体と下層不織布１０２連続体とを重ねて供給し、接合することにより、凹凸構造の表面シート１０の連続体を形成することができる。 When the topsheet 10 is a nonwoven fabric having a concavo-convex structure as shown in FIG. 8, for example, an embossing roll provided with a convex portion corresponding to the joint portion 103 on the peripheral surface, and the convex portion is in a state of being bitten. A flat surface with a smooth surface facing the embossing roll in a state where the upper layer nonwoven fabric 101 continuum is bitten with a roll having a convex portion and molding is performed along the convex portion, and the upper layer nonwoven fabric 101 continuum is maintained on the embossing roll. A continuous body of the topsheet 10 having a concavo-convex structure can be formed by supplying and joining the upper layer nonwoven fabric 101 continuous body and the lower layer nonwoven fabric 102 continuous body between the rolls.
　次いで、図９に示すように、ロール３の下流側に位置する塗布装置４により、使い捨ておむつ連続体１００の表面シート１０に、その外面側からスキンケア剤１８を溶融させた状態で塗布する（塗布工程Ｄ）。第５実施態様の塗布工程Ｄにおいては、溶融させた状態のスキンケア剤１８を、塗布装置４により、所定温度以上の温風でスプレー塗工する。スキンケア剤１８は、図９に示すように、一対のサイドシート１３，１３それぞれの連続体の幅方向（Ｘ方向）内方側の縁部より内側の領域に塗布されており、使い捨ておむつ連続体１００の有する表面シート１０の一面に搬送方向（ｙ方向）に連続して塗布されている。このように、スキンケア剤１８は、使い捨ておむつ１Ａの立体ギャザーを形成する撥水性のサイドシート１３に塗布されないように、表面シート１０上に塗布されている。尚、スキンケア剤１８は、形成された使い捨ておむつ１Ａの表面シート１０の一部に塗布されるように、搬送方向（ｙ方向）に間欠的に塗布されていてもよい。また、表面シート１０として、上述した凹凸構造の不織布を用いる場合には、塗布装置４により、上層不織布１０２の外表面側からスキンケア剤１８を塗布する。 Next, as shown in FIG. 9, the skin care agent 18 is applied to the top sheet 10 of the disposable diaper continuum 100 in a melted state from the outer surface side by the coating device 4 located on the downstream side of the roll 3 (application). Step D). In the coating process D of the fifth embodiment, the melted skin care agent 18 is spray-coated by the coating device 4 with warm air of a predetermined temperature or higher. As shown in FIG. 9, the skin care agent 18 is applied to a region inside the edge inward in the width direction (X direction) of each continuous body of the pair of side sheets 13, 13, and is a disposable diaper continuous body 100 is continuously applied to one surface of the top sheet 10 in the transport direction (y direction). Thus, the skin care agent 18 is applied on the top sheet 10 so as not to be applied to the water-repellent side sheet 13 that forms the three-dimensional gather of the disposable diaper 1A. In addition, the skin care agent 18 may be intermittently apply | coated in the conveyance direction (y direction) so that it may apply | coat to a part of surface sheet 10 of 1 A of formed disposable diapers. Moreover, when using the nonwoven fabric of the uneven structure mentioned above as the surface sheet 10, the skin care agent 18 is apply | coated from the outer surface side of the upper nonwoven fabric 102 with the coating device 4. FIG.
　次いで、スキンケア剤１８の塗布された表面シート１０側に使い捨ておむつ連続体１００を折り畳む前に、塗布されたスキンケア剤１８を、使い捨ておむつ連続体１００の表面シート１０側を流体で冷却する（冷却工程Ｅ）。第５実施態様の冷却工程Ｅにおいては、図９に示すように、塗布装置４と折り畳み手段６との間に配されている送風手段５２を用いて、スキンケア剤１８の塗布された表面シート１０側に使い捨ておむつ連続体１００を折り畳む前に、表面シート１０に、その外面側から空気を送風して、塗布されたスキンケア剤１８を固体化する。尚、第５実施態様に用いる送風手段５２は、使い捨ておむつ連続体１００の厚み方向（Ｚ方向の下方）に空気を送風している。 Next, before folding the disposable diaper continuous body 100 on the surface sheet 10 side to which the skin care agent 18 is applied, the applied skin care agent 18 is cooled with a fluid on the surface sheet 10 side of the disposable diaper continuous body 100 (cooling step). E). In the cooling step E of the fifth embodiment, as shown in FIG. 9, the surface sheet 10 to which the skin care agent 18 is applied is used by using the air blowing means 52 disposed between the coating device 4 and the folding means 6. Before the disposable diaper continuous body 100 is folded to the side, air is blown from the outer surface side of the top sheet 10 to solidify the applied skin care agent 18. The blowing means 52 used in the fifth embodiment blows air in the thickness direction (downward in the Z direction) of the disposable diaper continuous body 100.
　また、第５実施態様の冷却工程Ｅにおいては、図９に示すように、搬送手段５１（ロール３を含む搬送ロール）により、使い捨ておむつ連続体１００を搬送方向（Ｙ方向）に所定速度以上で搬送して、塗布されたスキンケア剤１８を空気流により冷却（空冷）している。所定速度以上で搬送することにより、特に凹凸構造の表面シート１０の場合、例えば図８の表面シート１０では、凸部１０４周囲の空気が流体となって凸部１０４の頭上とその周辺の連続する凹部を通過する。そして、一部の気流が凸部１０４の壁面から内部へと流れ、凸部１０４の頭頂部表面を流れた空気で挟み込むことにより、凸部１０４の頂部の冷却効率が向上し、頭頂部に多く存在するスキンケア剤１８を固体化できることで吸収性物品（使い捨ておむつ１Ａ）の不必要な部位に一層付着しにくくなる。このように、第５実施態様の冷却工程Ｅにおいては、送風手段５２のみならず搬送手段５１も用いて、塗布されたスキンケア剤１８を冷却しているが、送風手段５２及び搬送手段５１の何れか一方のみの手段を用いて冷却してもよい。 Moreover, in the cooling process E of the fifth embodiment, as shown in FIG. 9, the disposable diaper continuous body 100 is moved at a predetermined speed or more in the transport direction (Y direction) by the transport means 51 (the transport roll including the roll 3). The skin care agent 18 applied and cooled is cooled (air cooled) by an air flow. By transporting at a predetermined speed or more, particularly in the case of the surface sheet 10 having a concavo-convex structure, for example, in the surface sheet 10 of FIG. Pass through the recess. Then, a part of the airflow flows from the wall surface of the convex portion 104 to the inside, and is sandwiched by the air flowing on the top surface of the convex portion 104, so that the cooling efficiency of the top portion of the convex portion 104 is improved and much on the top portion. Since the existing skin care agent 18 can be solidified, it becomes more difficult to adhere to unnecessary parts of the absorbent article (disposable diaper 1A). Thus, in the cooling step E of the fifth embodiment, the applied skin care agent 18 is cooled using not only the air blowing means 52 but also the conveying means 51, but any of the air blowing means 52 and the conveying means 51 is used. You may cool using only one of these means.
　次いで、図９に示すように、送風手段５２の下流側に位置する一対の折り畳みプレート６１，６１により、使い捨ておむつ連続体１００の搬送方向（ｙ方向）の両側部１００ａ，１００ａを、使い捨ておむつ連続体１００の有する吸収体１２の搬送方向（ｙ方向）の両側縁１２ａ，１２ａ近傍を起点に、幅方向（Ｘ方向）中央に向かって表面シート１０側に折り畳む。 Next, as shown in FIG. 9, the pair of folding plates 61 and 61 located on the downstream side of the air blowing means 52 causes the disposable diaper continuous body 100 to be disposed on both sides 100a and 100a in the transport direction (y direction). The absorbent body 12 of the body 100 is folded toward the top sheet 10 toward the center in the width direction (X direction) starting from the vicinity of both side edges 12a, 12a in the transport direction (y direction) of the absorbent body 100.
　次いで、図９に示すように、一対の折り畳みプレート６１，６１の下流側に位置する一対の加圧ロール７１，７１の間に、両側部１００ａ，１００ａの折り畳まれた使い捨ておむつ連続体１００を供給することにより、挟圧して、両側部１００ａ，１００ａの折り畳まれた状態に折り癖を付与する。 Next, as shown in FIG. 9, the folded disposable diaper continuum 100 on both side portions 100a, 100a is supplied between a pair of pressure rolls 71, 71 located downstream of the pair of folding plates 61, 61. By doing so, a crease is imparted to the folded state of both side portions 100a, 100a.
　次いで、図９に示すように、一対の加圧ロール７１，７１の下流側に位置するカットロール８１とフラットロールとの間に、両側部１００ａ，１００ａの折り畳まれた使い捨ておむつ連続体１００を供給して、搬送方向（ｙ方向）に隣り合う吸収体１２同士の間毎に使い捨ておむつ連続体１００を切断し、両側部の折り畳まれた状態の個々の使い捨ておむつ１Ａを得る。 Next, as shown in FIG. 9, the folded disposable diaper continuum 100 on both side portions 100a, 100a is supplied between the cut roll 81 and the flat roll located on the downstream side of the pair of pressure rolls 71, 71. And the disposable diaper continuous body 100 is cut | disconnected for every between absorbers 12 adjacent to a conveyance direction (y direction), and each disposable diaper 1A of the folded state of both sides is obtained.
　第５実施態様の製造方法においては、更に、両側部の折り畳まれた状態の使い捨ておむつ１Ａを、長手方向（Ｙ方向）の略中央部において約半分に折り畳む工程と、長手方向（Ｙ方向）に約半分に折り畳まれた使い捨ておむつ１Ａを、一対の加圧ロール７２，７２を用いて挟圧する加圧工程とを備えている。第５実施態様の製造方法においては、これらの工程を備えていることにより、一対の加圧ロール７２，７２を備えている。第５実施態様の製造方法においては、これらの工程を経ることにより、更にコンパクトに折られた状態を維持した使い捨ておむつ１Ａを連続的に製造することができる。 In the manufacturing method of the fifth embodiment, the disposable diaper 1A in a folded state on both sides is further folded in approximately half at the substantially central portion in the longitudinal direction (Y direction), and in the longitudinal direction (Y direction). A pressing step of clamping the disposable diaper 1 </ b> A folded in about half using a pair of pressing rolls 72, 72. In the manufacturing method of the fifth embodiment, by including these steps, a pair of pressure rolls 72 and 72 are provided. In the manufacturing method of a 5th embodiment, 1A of disposable diapers which maintained the state folded further compactly can be manufactured continuously by passing through these processes.
　第５実施態様の製造方法に関し、特に説明しない点は、従来の、いわゆる縦流れ方式の展開型使い捨ておむつの製造方法と同様にして製造することができる。 Regarding the manufacturing method of the fifth embodiment, points that are not particularly described can be manufactured in the same manner as the conventional manufacturing method of a so-called longitudinal flow type disposable disposable diaper.
　第５実施態様の製造方法によれば、スキンケア剤１８の塗布された表面シート１０側に使い捨ておむつ連続体１００を最初に折り畳む前に、塗布されたスキンケア剤１８を使い捨ておむつ連続体１００の表面シート１０側を流体で冷却する冷却工程Ｅを具備しているため、最初に使い捨ておむつ連続体１００を折り畳む折り畳みプレート６１の前に、塗布されたスキンケア剤１８が表面シート１０に固体化されている。従って、折り畳みプレート６１により折り畳まれた使い捨ておむつ連続体１００の両側部１００ａ，１００ａに、表面シート１０に固体化しているスキンケア剤１８が移行し難い。また、両側部１００ａ，１００ａの折り畳まれた使い捨ておむつ連続体１００を加圧ロール７１，７１により挟圧しても、使い捨ておむつ連続体１００の両側部１００ａ，１００ａに、表面シート１０に固体化しているスキンケア剤１８が移行し難い。ここで、例えば、使い捨ておむつ１Ａの両側部の立体ギャザーを形成するサイドシート１３は、一般的に撥水性の材料が用いられており、スキンケア剤１８が親水性である場合に、親水性のスキンケア剤１８が立体ギャザーに付着すると、体液の横漏れを防止することができなくなってしまう。このように、スキンケア剤１８を使い捨ておむつ１Ａの必要としない部位（例えば、使い捨ておむつ１Ａの両側部の立体ギャザー）に移行させ難くしながら、肌に触れる表面シート１０にのみスキンケア剤１８が塗布された使い捨ておむつ１Ａを、効率よく連続的に製造することができる。 According to the manufacturing method of the fifth embodiment, before the disposable diaper continuous body 100 is first folded on the surface sheet 10 side to which the skin care agent 18 is applied, the applied skin care agent 18 is applied to the surface sheet of the disposable diaper continuous body 100. Since the cooling process E which cools the 10 side with the fluid is provided, the applied skin care agent 18 is solidified on the top sheet 10 before the folding plate 61 that first folds the disposable diaper continuous body 100. Therefore, it is difficult for the skin care agent 18 solidified on the topsheet 10 to migrate to both side portions 100a, 100a of the disposable diaper continuous body 100 folded by the folding plate 61. Moreover, even if the disposable diaper continuous body 100 folded on both side portions 100a and 100a is clamped by the pressure rolls 71 and 71, the top sheet 10 is solidified on both side portions 100a and 100a of the disposable diaper continuous body 100. Skin care agent 18 is difficult to migrate. Here, for example, the side sheet 13 forming the three-dimensional gathers on both sides of the disposable diaper 1A is generally made of a water-repellent material, and when the skin care agent 18 is hydrophilic, hydrophilic skin care. If the agent 18 adheres to the three-dimensional gather, it becomes impossible to prevent the side leakage of the body fluid. As described above, the skin care agent 18 is applied only to the surface sheet 10 that touches the skin while making it difficult for the skin care agent 18 to be transferred to a portion where the disposable diaper 1A is not required (for example, three-dimensional gathers on both sides of the disposable diaper 1A). The disposable diaper 1A can be manufactured efficiently and continuously.
　第５実施態様の製造方法によれば、搬送手段５１（ロール３を含む搬送ロール）と、送風手段５２とを用いて、塗布されたスキンケア剤１８を冷却するので、塗布されたスキンケア剤１８が表面シート１０に固体化し易い。その為、スキンケア剤１８が使い捨ておむつ１Ａの必要としない部位（例えば、使い捨ておむつ１Ａの両側部の立体ギャザー）に更に移行し難く、表面シート１０にのみスキンケア剤１８が塗布された使い捨ておむつ１Ａを、更に効率よく連続的に製造することができる。 According to the manufacturing method of the fifth embodiment, the applied skin care agent 18 is cooled using the conveying means 51 (conveying roll including the roll 3) and the air blowing means 52. It is easy to solidify on the top sheet 10. Therefore, the disposable diaper 1A in which the skin care agent 18 is applied only to the top sheet 10 is more difficult to move to a site where the skin care agent 18 does not require the disposable diaper 1A (for example, three-dimensional gathers on both sides of the disposable diaper 1A). Further, it can be continuously produced more efficiently.
　以下、本発明の使い捨ておむつの製造方法を、その好ましい第６実施態様に基づき図面を参照しながら説明する。
　先ず、第６実施態様により製造される使い捨ておむつについて説明すると、第５実施態様により製造される使い捨ておむつ１Ａと同様である。 Hereinafter, the manufacturing method of the disposable diaper of this invention is demonstrated, referring drawings based on the preferable 6th embodiment.
First, the disposable diaper manufactured according to the sixth embodiment will be described in the same manner as the disposable diaper 1A manufactured according to the fifth embodiment.
　次に、本発明の第６実施態様として、使い捨ておむつ１Ａの好ましい製造方法について図１１を参照して説明する。第６実施態様において、特に説明しない点については、第５実施態様に関して詳述した説明が適宜適用される。 Next, as a sixth embodiment of the present invention, a preferred manufacturing method of the disposable diaper 1A will be described with reference to FIG. In the sixth embodiment, the description in detail regarding the fifth embodiment is applied as appropriate to points that are not particularly described.
　第６実施態様の製造方法の実施に用いられる使い捨ておむつ製造装置２Ｂは、図１１に示すように、第５実施態様の製造方法の実施に用いられる使い捨ておむつ製造装置２Ａと同様に、表面シート１０を有する使い捨ておむつ１Ａが長手方向に連続した使い捨ておむつ連続体１００に、スキンケア剤１８を溶融させた状態で塗布する塗布装置４と、塗布されたスキンケア剤１８を流体で冷却する冷却手段５（搬送手段５１及び送風手段５２）とを具備している。使い捨ておむつ製造装置２Ｂの塗布装置４は、更に、使い捨ておむつ連続体１００が通るトンネル４２を備えている。 As shown in FIG. 11, the disposable diaper manufacturing apparatus 2B used for the implementation of the manufacturing method of the sixth embodiment is similar to the disposable diaper manufacturing apparatus 2A used for the implementation of the manufacturing method of the fifth embodiment, as shown in FIG. The disposable diaper 1A having a coating device 4 for applying the skin care agent 18 in a melted state to the disposable diaper continuous body 100 in which the disposable diaper 1A is continuous in the longitudinal direction, and cooling means 5 for cooling the applied skin care agent 18 with a fluid (conveyance) Means 51 and blower means 52). The coating device 4 of the disposable diaper manufacturing apparatus 2B further includes a tunnel 42 through which the disposable diaper continuous body 100 passes.
　使い捨ておむつ製造装置２Ｂの塗布装置４は、図１１に示すように、使い捨ておむつ連続体１００が通るトンネル４２を備えており、トンネル４２内にて、使い捨ておむつ連続体１００に、スキンケア剤１８が塗布される。トンネル４２内の設定温度は、例えば、スキンケア剤の分解などを防止するためにスプレー温度を低めに設定しても、表面シート１０に塗布されたスキンケア剤１８の流動性および吸収性物品（表面シート１０）への付着を確保し、更にある程度低温でスキンケア剤１８をスプレーした吸収性物品がトンネルの外に搬送されて出た際に、なるべく早くスキンケア剤１８が固化して固定できるようにする観点から、（塗布されるスキンケア剤１８の固化温度－２０℃）～（塗布されるスキンケア剤１８の固化温度＋２０℃）の範囲であることが好ましく、（塗布されるスキンケア剤１８の固化温度－１０℃）～（塗布されるスキンケア剤１８の固化温度＋１０℃）の範囲であることが更に好ましい。 As shown in FIG. 11, the applicator 4 of the disposable diaper manufacturing apparatus 2 </ b> B includes a tunnel 42 through which the disposable diaper continuous body 100 passes, and the skin care agent 18 is applied to the disposable diaper continuous body 100 in the tunnel 42. Is done. Even if the set temperature in the tunnel 42 is set to a low spray temperature to prevent decomposition of the skin care agent, for example, the fluidity and absorbent article (surface sheet) of the skin care agent 18 applied to the top sheet 10 10) A viewpoint that ensures adhesion to 10) and allows the skin care agent 18 to solidify and fix as soon as possible when the absorbent article sprayed with the skin care agent 18 at a certain low temperature is transported out of the tunnel. To (solidification temperature of the applied skin care agent -20 ° C) to (solidification temperature of the applied skin care agent 18 + 20 ° C), preferably (solidification temperature of the applied skin care agent 18 -10) More preferably, it is in the range of (° C.) to (solidification temperature of applied skin care agent 18 + 10 ° C.).
　次に、上述した使い捨ておむつ製造装置２Ｂを用いて、本発明の使い捨ておむつの製造方法を、図１１を参照しながら説明する。 Next, the manufacturing method of the disposable diaper of this invention is demonstrated using FIG. 11 using the disposable diaper manufacturing apparatus 2B mentioned above.
　まず、第５実施態様の使い捨ておむつ１Ａの製造方法と同様に、常法に従って、使い捨ておむつ１Ａが搬送方向（ｙ方向）に連続した使い捨ておむつ連続体１００を製造し、この使い捨ておむつ連続体１００を、ロール３を一部に含む搬送ロールにより、ｙ方向に搬送する。次いで、ロール３の下流側に位置する塗布装置４により、使い捨ておむつ連続体１００の表面シート１０に、その外面側からスキンケア剤１８を溶融させた状態で塗布する（塗布工程Ｄ）。第６実施態様の塗布工程Ｄにおいては、トンネル４２内に配された塗布装置４から、溶融させた状態のスキンケア剤１８を、表面シート１０に、その外面側からスプレー塗工する。 First, similarly to the manufacturing method of the disposable diaper 1A of the fifth embodiment, according to a conventional method, the disposable diaper continuous body 100 in which the disposable diaper 1A is continuous in the transport direction (y direction) is manufactured. , And transported in the y direction by a transport roll including part of the roll 3. Next, the skin care agent 18 is applied to the top sheet 10 of the disposable diaper continuous body 100 in a melted state from the outer surface side by the coating device 4 located on the downstream side of the roll 3 (coating step D). In the coating step D of the sixth embodiment, the skin care agent 18 in a melted state is spray-coated on the top sheet 10 from the outer surface side from the coating device 4 disposed in the tunnel 42.
　次いで、スキンケア剤１８の塗布された表面シート１０側に使い捨ておむつ連続体１００を折り畳む前に、第５実施態様の使い捨ておむつ１Ａの製造方法と同様に、塗布されたスキンケア剤１８を、使い捨ておむつ連続体１００の表面シート１０側を流体で冷却する（冷却工程Ｅ）。
　また、使い捨ておむつ製造装置２Ｂの送風手段５２は、図１１に示すように、使い捨ておむつ製造装置２Ａの送風手段５２の位置と異なり、塗布装置４よりも上部（Ｚ方向の上方の位置）に配されている。これに合わせて、使い捨ておむつ連続体１００の搬送位置も上部（Ｚ方向の上方の位置）に変位している。 Next, before folding the disposable diaper continuous body 100 on the surface sheet 10 side to which the skin care agent 18 is applied, the applied skin care agent 18 is continuously applied to the disposable diaper in the same manner as in the manufacturing method of the disposable diaper 1A of the fifth embodiment. The top sheet 10 side of the body 100 is cooled with a fluid (cooling step E).
In addition, as shown in FIG. 11, the blowing means 52 of the disposable diaper manufacturing apparatus 2B is arranged above the coating apparatus 4 (upward position in the Z direction), unlike the position of the blowing means 52 of the disposable diaper manufacturing apparatus 2A. Has been. In accordance with this, the transport position of the disposable diaper continuous body 100 is also displaced upward (position in the Z direction).
　その後は、第５実施態様の使い捨ておむつ１Ａの製造方法と同じ工程を経ることにより、使い捨ておむつ１Ａを製造することができる。 Thereafter, the disposable diaper 1A can be manufactured through the same steps as the manufacturing method of the disposable diaper 1A of the fifth embodiment.
　第６実施態様の製造方法によれば、第５実施態様の製造方法と同様に、スキンケア剤１８の塗布された表面シート１０側に使い捨ておむつ連続体１００を最初に折り畳む前に、塗布されたスキンケア剤１８を流体で冷却する冷却工程を具備しているため、スキンケア剤１８を使い捨ておむつ１Ａの必要としない部位（例えば、使い捨ておむつ１Ａの両側部の立体ギャザー）に移行させ難くしながら、肌に触れる表面シート１０にのみスキンケア剤１８が塗布された使い捨ておむつ１Ａを、効率よく連続的に製造することができる。また、第６実施態様の製造方法によれば、トンネル４２内に配された塗布装置４により、スキンケア剤１８を、表面シート１０に、その外面側からスプレー塗工する為、スプレー塗工されるスキンケア剤１８がトンネル４２の外に撒き散らかされることを防止でき、スキンケア剤１８による使い捨ておむつ製造装置２Ｂの装置汚れを最小限に抑えることができる。 According to the manufacturing method of the sixth embodiment, similar to the manufacturing method of the fifth embodiment, before the disposable diaper continuous body 100 is first folded on the surface sheet 10 side to which the skin care agent 18 is applied, the applied skin care is applied. Since the cooling process of cooling the agent 18 with a fluid is provided, the skin care agent 18 is difficult to be transferred to a portion where the disposable diaper 1A is not required (for example, three-dimensional gathers on both sides of the disposable diaper 1A). The disposable diaper 1A in which the skin care agent 18 is applied only to the surface sheet 10 to be touched can be efficiently and continuously manufactured. Further, according to the manufacturing method of the sixth embodiment, the skin care agent 18 is spray-coated on the top sheet 10 from the outer surface side by the coating device 4 disposed in the tunnel 42. The skin care agent 18 can be prevented from being scattered outside the tunnel 42, and the contamination of the disposable diaper manufacturing apparatus 2B by the skin care agent 18 can be minimized.
　また、第６実施態様の製造方法によれば、トンネル４２内に塗布装置４が配されているため、トンネル４２の内部の温度は、塗布装置４によりスキンケア剤１８を塗布する際の温風の影響で、トンネル４２の外部の温度より高く保たれている。従って、表面シート１０に塗布されたスキンケア剤１８の流動性が確保できる温度にまで設定温度を下げて、塗布装置４によりスキンケア剤１８を塗布することができるので、スキンケア剤１８の固化温度まで、塗布されたスキンケア剤１８の温度を冷却手段５により下げ易く、塗布されたスキンケア剤１８を表面シート１０に固体化し易い。また、第６実施態様の製造方法によれば、トンネル４２を備えているので、トンネル４２の内外の温度差が大きいのでスキンケア剤１８が固化し易い。 Further, according to the manufacturing method of the sixth embodiment, since the coating device 4 is arranged in the tunnel 42, the temperature inside the tunnel 42 is the warm air when the skin care agent 18 is applied by the coating device 4. Due to the influence, the temperature is kept higher than the temperature outside the tunnel 42. Accordingly, the setting temperature can be lowered to a temperature at which the fluidity of the skin care agent 18 applied to the topsheet 10 can be secured, and the skin care agent 18 can be applied by the application device 4. The temperature of the applied skin care agent 18 is easily lowered by the cooling means 5, and the applied skin care agent 18 is easily solidified on the top sheet 10. Moreover, according to the manufacturing method of the sixth embodiment, since the tunnel 42 is provided, the skin care agent 18 is easily solidified because the temperature difference between the inside and outside of the tunnel 42 is large.
　以下、本発明の使い捨ておむつの製造方法を、その好ましい第７実施態様に基づき図面を参照しながら説明する。
　先ず、第７実施態様により製造される使い捨ておむつについて説明すると、第５実施態様により製造される使い捨ておむつ１Ａと同様である。 Hereinafter, the manufacturing method of the disposable diaper of this invention is demonstrated, referring drawings based on the preferable 7th embodiment.
First, the disposable diaper manufactured according to the seventh embodiment will be described in the same manner as the disposable diaper 1A manufactured according to the fifth embodiment.
　次に、本発明の第７実施態様として、使い捨ておむつ１Ａの好ましい製造方法について図１２を参照して説明する。第７実施態様において、特に説明しない点については、第５実施態様に関して詳述した説明が適宜適用される。 Next, as a seventh embodiment of the present invention, a preferred manufacturing method of the disposable diaper 1A will be described with reference to FIG. In the seventh embodiment, the description in detail regarding the fifth embodiment is applied as appropriate to points that are not particularly described.
　第７実施態様の製造方法の実施に用いられる使い捨ておむつ製造装置２Ｃは、図１２に示すように、第５実施態様の製造方法の実施に用いられる使い捨ておむつ製造装置２Ａと同様に、表面シート１０を有する使い捨ておむつ１Ａが長手方向に連続した使い捨ておむつ連続体１００に、スキンケア剤１８を溶融させた状態で塗布する塗布装置４と、塗布されたスキンケア剤１８を流体で冷却する冷却手段５（搬送手段５１及び送風手段５２）とを具備している。使い捨ておむつ製造装置２Ｃの冷却手段５は、使い捨ておむつ製造装置２Ａと同様に、搬送手段５１と送風手段５２とを具備しているが、使い捨ておむつ製造装置２Ｃの送風手段５２は、使い捨ておむつ製造装置２Ａの送風手段５２に比べ、送風方向が異なっている。 The disposable diaper manufacturing apparatus 2C used for the implementation of the manufacturing method of the seventh embodiment is similar to the disposable diaper manufacturing apparatus 2A used for the implementation of the manufacturing method of the fifth embodiment, as shown in FIG. The disposable diaper 1A having a coating device 4 for applying the skin care agent 18 in a melted state to the disposable diaper continuous body 100 in which the disposable diaper 1A is continuous in the longitudinal direction, and cooling means 5 for cooling the applied skin care agent 18 with a fluid (conveyance) Means 51 and blower means 52). The cooling means 5 of the disposable diaper manufacturing apparatus 2C includes a conveying means 51 and an air blowing means 52 as in the case of the disposable diaper manufacturing apparatus 2A, but the air blowing means 52 of the disposable diaper manufacturing apparatus 2C is a disposable diaper manufacturing apparatus. The blowing direction is different from that of the 2A blowing means 52.
　使い捨ておむつ製造装置２Ｃの送風手段５２は、図１２に示すように、使い捨ておむつ連続体１００の表面シート１０に、その外面側から使い捨ておむつ連続体１００の搬送方向（ｙ方向）に対向する方向から空気を送風するように、空気を送風するノズル（不図示）の先端が、搬送方向（ｙ方向）に対向する方向に向いている。また、使い捨ておむつ製造装置２Ｃの送風手段５２は、図１２に示すように、ノズル（不図示）から搬送方向（ｙ方向）に対向する方向に送風される空気が、スキンケア剤１８を吐出する塗布装置４のノズル４１に当たって、ノズル４１からのスキンケア剤１８の塗布を乱さないよう、またノズル４１でスキンケア剤１８が固体化しないように、使い捨ておむつ製造装置２Ａの送風手段５２の位置と異なり、塗布装置４よりも上部（Ｚ方向の上方の位置）に配されている。これに合わせて、使い捨ておむつ連続体１００の搬送位置も上部（Ｚ方向の上方の位置）に変位している。 As shown in FIG. 12, the blowing means 52 of the disposable diaper manufacturing apparatus 2 </ b> C is arranged on the top sheet 10 of the disposable diaper continuous body 100 from the direction facing the transport direction (y direction) of the disposable diaper continuous body 100 from the outer surface side. The tip of a nozzle (not shown) that blows air is directed in a direction facing the transport direction (y direction) so as to blow air. Further, as shown in FIG. 12, the air blowing means 52 of the disposable diaper manufacturing apparatus 2 </ b> C is an application in which air blown in a direction opposite to the conveying direction (y direction) from a nozzle (not shown) discharges the skin care agent 18. Unlike the position of the blowing means 52 of the disposable diaper manufacturing apparatus 2A, the application is performed so as not to disturb the application of the skin care agent 18 from the nozzle 41 and to prevent the skin care agent 18 from being solidified by the nozzle 41. It is arranged above the device 4 (above the Z direction). In accordance with this, the transport position of the disposable diaper continuous body 100 is also displaced upward (position in the Z direction).
　尚、図１２に示す使い捨ておむつ製造装置２Ｃの送風手段５２は、使い捨ておむつ連続体１００が通気性を有する場合には、上述した使い捨ておむつ製造装置２Ａの送風手段５２と同様に、サクションボックス（不図示）を配してもよい。サクションボックス（不図示）で送風手段５２のノズル（不図示）から送風した空気を吸引することにより、図１３に示すように、使い捨ておむつ連続体１００の表面シート１０側に、使い捨ておむつ連続体１００の搬送方向（ｙ方向）に対向する方向から空気を送風すると共に、使い捨ておむつ連続体１００の厚み方向（Ｚ方向の下方）に空気を流して塗布されたスキンケア剤１８を冷却することができる。 In addition, when the disposable diaper continuous body 100 has air permeability, the blowing means 52 of the disposable diaper manufacturing apparatus 2C illustrated in FIG. (Shown) may be arranged. By sucking air blown from a nozzle (not shown) of the blowing means 52 in a suction box (not shown), the disposable diaper continuum 100 is placed on the surface sheet 10 side of the disposable diaper continuum 100 as shown in FIG. It is possible to cool the applied skin care agent 18 by blowing air from the direction opposite to the conveying direction (y direction) and flowing air in the thickness direction (downward in the Z direction) of the disposable diaper continuum 100.
　次に、上述した使い捨ておむつ製造装置２Ｃを用いて、本発明の使い捨ておむつの製造方法を、図１２を参照しながら説明する。 Next, the manufacturing method of the disposable diaper of the present invention will be described using the disposable diaper manufacturing apparatus 2C described above with reference to FIG.
　まず、第５実施態様の使い捨ておむつ１Ａの製造方法と同様に、常法に従って、使い捨ておむつ１Ａが搬送方向（ｙ方向）に連続した使い捨ておむつ連続体１００を製造し、この使い捨ておむつ連続体１００を、ロール３を一部に含む搬送ロールにより、ｙ方向に搬送する。次いで、第５実施態様の使い捨ておむつ１Ａの製造方法と同様に、ロール３の下流側に位置する塗布装置４により、使い捨ておむつ連続体１００の表面シート１０に、その外面側からスキンケア剤１８を溶融させた状態で塗布する（塗布工程Ｄ）。 First, similarly to the manufacturing method of the disposable diaper 1A of the fifth embodiment, according to a conventional method, the disposable diaper continuous body 100 in which the disposable diaper 1A is continuous in the transport direction (y direction) is manufactured. , And transported in the y direction by a transport roll including part of the roll 3. Next, in the same manner as in the manufacturing method of the disposable diaper 1A of the fifth embodiment, the skin care agent 18 is melted from the outer surface side to the top sheet 10 of the disposable diaper continuous body 100 by the coating device 4 located on the downstream side of the roll 3. It is applied in the state (application process D).
　次いで、スキンケア剤１８の塗布された表面シート１０側に使い捨ておむつ連続体１００を折り畳む前に、塗布されたスキンケア剤１８を、使い捨ておむつ連続体１００の表面シート１０側を流体で冷却する（冷却工程Ｅ）。第７実施態様の冷却工程Ｅにおいては、図１２に示すように、搬送手段５１（ロール３を含む搬送ロール）により、所定速度以上で搬送して、塗布されたスキンケア剤１８を空気流により冷却（空冷）して固体化するとともに、塗布装置４よりＺ方向の上方の位置に配され、搬送方向（ｙ方向）に対向する方向にノズル（不図示）の向いた送風手段５２を用いて、スキンケア剤１８の塗布された表面シート１０側に使い捨ておむつ連続体１００を折り畳む前に、搬送方向（Ｙ方向）に対向する方向から空気を送風して塗布されたスキンケア剤１８を固体化する。特に凹凸構造の表面シート１０の場合、凸部１０４周囲の空気が流体となって凸部１０４の頭上とその周辺の連続する凹部を通過する。そして、一部の気流が凸部１０４の壁面から内部へと流れ、凸部１０４の頭頂部表面を流れた空気で挟み込むことにより、凸部１０４の頂部の冷却効率が向上し、頭頂部に多く存在するスキンケア剤１８を固体化できることで吸収性物品（使い捨ておむつ１Ａ）の不必要な部位に一層付着しにくくなる。 Next, before folding the disposable diaper continuous body 100 on the surface sheet 10 side to which the skin care agent 18 is applied, the applied skin care agent 18 is cooled with a fluid on the surface sheet 10 side of the disposable diaper continuous body 100 (cooling step). E). In the cooling step E of the seventh embodiment, as shown in FIG. 12, the applied skin care agent 18 is cooled by an air flow by being conveyed at a predetermined speed or more by the conveying means 51 (conveying roll including the roll 3). Using air blowing means 52 that is solidified by air cooling and is disposed at a position above the coating device 4 in the Z direction and facing a nozzle (not shown) in a direction opposite to the transport direction (y direction), Before folding the disposable diaper continuous body 100 on the side of the topsheet 10 to which the skin care agent 18 is applied, the skin care agent 18 applied by blowing air from the direction facing the conveyance direction (Y direction) is solidified. In particular, in the case of the topsheet 10 having a concavo-convex structure, the air around the convex portion 104 becomes a fluid and passes through the concave portion continuous above the head of the convex portion 104 and its periphery. Then, a part of the airflow flows from the wall surface of the convex portion 104 to the inside, and is sandwiched by the air flowing on the top surface of the convex portion 104, so that the cooling efficiency of the top portion of the convex portion 104 is improved and much on the top portion. Since the existing skin care agent 18 can be solidified, it becomes more difficult to adhere to unnecessary parts of the absorbent article (disposable diaper 1A).
　さらに図１３に示すように、使い捨ておむつ連続体１００の表面シート１０側に、使い捨ておむつ連続体１００あるいはその前駆体の搬送方向（ｙ方向）に対向する方向から空気を送風すると共に、使い捨ておむつ連続体１００あるいはその前駆体の厚み方向（Ｚ方向の下方）に空気を流して塗布されたスキンケア剤１８を冷却することで、凸部１０４周囲の空気が流体となって凸部１０４の頭上とその周辺の連続する凹部を通過して凸部１０４を周囲から冷却するとともに、空気流をサクションボックスから吸引することによって、スキンケア剤１８が表面シート１０を構成する不織布の構成繊維内に入り込み易くなる。凸部１０４の壁面前部から内部へ流れる気流と凸部１０４の頭頂部表面を流る気流とで挟み込むことにより、凸部１０４の頂部の冷却効率が向上し、頭頂部に多く存在するスキンケア剤１８を固体化できることで吸収性物品（使い捨ておむつ１Ａ）の不必要な部位に一層付着しにくくなる。またサクションボックスからの吸引を強くすることによって凹凸構造の表面シート１０の凸部１０４内にスキンケア剤１８が運ばれた後に冷却固化されるために吸収性物品（使い捨ておむつ１Ａ）の不必要な部位に一層付着しにくくなる。尚、使い捨ておむつ連続体１００の前駆体とは、上述した、裏面シート１１に透湿性のフィルムを用いた場合の冷却法で述べた、裏面シート１１を除いた使い捨ておむつ連続体１００の部分を意味する。 Furthermore, as shown in FIG. 13, while blowing air from the direction which opposes the conveyance direction (y direction) of the disposable diaper continuous body 100 or its precursor to the surface sheet 10 side of the disposable diaper continuous body 100, the disposable diaper continuous By cooling the skin care agent 18 applied by flowing air in the thickness direction (below the Z direction) of the body 100 or its precursor, the air around the convex portion 104 becomes fluid and the head of the convex portion 104 and its The skin care agent 18 can easily enter into the constituent fibers of the nonwoven fabric constituting the topsheet 10 by passing the peripheral continuous concave portions and cooling the convex portions 104 from the surroundings and sucking the air flow from the suction box. By sandwiching between the airflow flowing inward from the front surface of the wall of the convex portion 104 and the airflow flowing on the surface of the top of the convex portion 104, the cooling efficiency of the top of the convex portion 104 is improved, and a skin care agent that is present in a large amount on the top of the head Since 18 can be solidified, it becomes more difficult to adhere to unnecessary parts of the absorbent article (disposable diaper 1A). Moreover, since the skin care agent 18 is cooled and solidified after the skin care agent 18 is carried into the convex part 104 of the surface sheet 10 of the concavo-convex structure by strengthening suction from the suction box, an unnecessary part of the absorbent article (disposable diaper 1A) It becomes more difficult to adhere to. In addition, the precursor of the disposable diaper continuous body 100 means the part of the disposable diaper continuous body 100 excluding the back surface sheet 11 described in the cooling method in the case where a moisture-permeable film is used for the back surface sheet 11 described above. To do.
　その後は、第５実施態様の使い捨ておむつ１Ａの製造方法と同じ工程を経ることにより、使い捨ておむつ１Ａを製造することができる。 Thereafter, the disposable diaper 1A can be manufactured through the same steps as the manufacturing method of the disposable diaper 1A of the fifth embodiment.
　第７実施態様の製造方法によれば、第５実施態様の製造方法と同様に、スキンケア剤１８の塗布された表面シート１０側に使い捨ておむつ連続体１００を最初に折り畳む前に、塗布されたスキンケア剤１８を流体で冷却する冷却工程を具備しているため、スキンケア剤１８を使い捨ておむつ１Ａの必要としない部位（例えば、使い捨ておむつ１Ａの両側部の立体ギャザー）に移行させ難くしながら、肌に触れる表面シート１０にのみスキンケア剤１８が塗布された使い捨ておむつ１Ａを、効率よく連続的に製造することができる。また、第７実施態様の製造方法によれば、搬送方向（ｙ方向）に対向する方向にノズル（不図示）の向いた送風手段５２を用いて、搬送方向（ｙ方向）に対向する方向から空気を送風するので、搬送手段５１によりｙ方向に使い捨ておむつ連続体１００を搬送する搬送速度と相俟って、塗布されたスキンケア剤１８を表面シート１０に固体化する冷却効果が向上する。 According to the manufacturing method of the seventh embodiment, similar to the manufacturing method of the fifth embodiment, before the disposable diaper continuous body 100 is first folded on the surface sheet 10 side to which the skin care agent 18 is applied, the applied skin care is applied. Since the cooling process of cooling the agent 18 with a fluid is provided, the skin care agent 18 is difficult to be transferred to a portion where the disposable diaper 1A is not required (for example, three-dimensional gathers on both sides of the disposable diaper 1A). The disposable diaper 1A in which the skin care agent 18 is applied only to the surface sheet 10 to be touched can be efficiently and continuously manufactured. Further, according to the manufacturing method of the seventh embodiment, from the direction facing the transport direction (y direction) using the air blowing means 52 whose nozzle (not shown) faces in the direction facing the transport direction (y direction). Since air is blown, the cooling effect of solidifying the applied skin care agent 18 on the top sheet 10 is improved in combination with the conveyance speed of conveying the disposable diaper continuous body 100 in the y direction by the conveyance means 51.
　本発明の吸収性物品の製造方法は、上述の第５，第６，第７実施態様の製造方法に何ら制限されるものではなく、適宜変更可能である。 The manufacturing method of the absorbent article of the present invention is not limited to the manufacturing methods of the fifth, sixth, and seventh embodiments described above, and can be changed as appropriate.
　例えば、上述の第５，第６，第７実施態様の製造方法により製造される使い捨ておむつ１Ａは、展開型の使い捨ておむつであるが、パンツ型使い捨ておむつであってもよく、生理用ナプキン、吸収パッド等の吸収性物品であってもよい。 For example, the disposable diaper 1A manufactured by the manufacturing method according to the fifth, sixth, and seventh embodiments described above is an unfolded disposable diaper, but may be a pants-type disposable diaper, a sanitary napkin, an absorption It may be an absorbent article such as a pad.
　また、上述の第５，第６，第７実施態様の吸収性物品の製造方法は、塗布装置４によりスキンケア剤１８を塗布しているが、スキンケア剤１８の塗布方法としては、多様な方法を用いることができる。例えば、塗布方式としては、ダイスコーター方式、スロットスプレー方式、カーテンスプレー方式、メルトブローン方式、スパイラルスプレー方式、グラビア方式、ビード方式等を用いることができる。 Moreover, although the skin care agent 18 is apply | coated with the coating device 4 in the manufacturing method of the absorbent article of the above-mentioned 5th, 6th, 7th embodiment, as the application method of the skin care agent 18, various methods are used. Can be used. For example, as a coating method, a die coater method, a slot spray method, a curtain spray method, a melt blown method, a spiral spray method, a gravure method, a bead method, or the like can be used.
　以下、実施例により本発明を更に詳細に説明する。しかしながら、本発明の範囲は斯かる実施例に制限されるものではない。 Hereinafter, the present invention will be described in more detail with reference to examples. However, the scope of the present invention is not limited to such embodiments.
〔実施例１〕
　前述したスキンケア剤付着装置２（図３参照）を用い、凹凸構造の帯状の表面シート（図１参照）にスキンケア剤１．０ｇ／ｍ2の塗布および冷却を行った。スキンケア剤は表面シートの凹凸側に塗布した。スキンケア剤は、ジアミド誘導体（ＢＲＳ）とステアリルアルコール（Ｓｔ－ＯＨ）との質量比５：５の等量混合物を用いた。このスキンケア剤の融点は５３℃である。表面シートの搬送速度は５０ｍ／ｍｉｎであり、冷却装置６からは温度－１０℃（装置の設定値）の空気を圧力０．５ＭＰａ、流量２００ｌ／ｍｉｎで表面シートに通過させた。また、冷却装置６はエアクーラーを用い、ノズル先端と表面シート（表面シートの凸部の頂部）との間隔は３０ｍｍに調整した。所定時間処理後（３分後、３０分後）に、ロール４４の表面に付着しているスキンケア剤を、金属製の平板を用いて掻き落として重量を測定し、その結果をロールへの付着量として表１に示す。なお、ロール４４としてはアルミニウム製のロールを用いた。 [Example 1]
Using the above-described skin care agent adhesion apparatus 2 (see FIG. 3), 1.0 g / m 2 of the skin care agent was applied to the belt-shaped surface sheet (see FIG. 1) having a concavo-convex structure and cooled. The skin care agent was applied to the uneven side of the surface sheet. As the skin care agent, an equal mixture of diamide derivative (BRS) and stearyl alcohol (St-OH) in a mass ratio of 5: 5 was used. The melting point of this skin care agent is 53 ° C. The conveying speed of the top sheet was 50 m / min, and air at a temperature of −10 ° C. (set value of the apparatus) was passed from the cooling device 6 through the top sheet at a pressure of 0.5 MPa and a flow rate of 200 l / min. Moreover, the cooling device 6 used the air cooler, and adjusted the space | interval of a nozzle front-end | tip and a surface sheet (the top part of the convex part of a surface sheet) to 30 mm. After the treatment for a predetermined time (after 3 minutes and 30 minutes), the skin care agent adhering to the surface of the roll 44 is scraped off using a metal flat plate, the weight is measured, and the result is attached to the roll. The amounts are shown in Table 1. Note that an aluminum roll was used as the roll 44.
〔実施例２〕
　前述したスキンケア剤付着装置２（図４参照）を用い、凹凸構造の帯状の表面シート（図１参照）にスキンケア剤（ＢＲＳ：Ｓｔ－ＯＨ＝５：５）１．０ｇ／ｍ2の塗布および冷却を行った。実施例１と同様の冷却工程に加えて、スキンケア剤の塗布前に予備冷却を行った。予備冷却の条件は、実施例１の冷却装置６と同様である。所定時間処理後（３分後）のロールへの付着量を同様に測定し、その結果を表１に示す。 [Example 2]
Using the above-described skin care agent adhering apparatus 2 (see FIG. 4), application of 1.0 g / m 2 of a skin care agent (BRS: St—OH = 5: 5) to a belt-like surface sheet (see FIG. 1) having an uneven structure; Cooling was performed. In addition to the same cooling step as in Example 1, preliminary cooling was performed before application of the skin care agent. The precooling conditions are the same as those of the cooling device 6 of the first embodiment. The amount of adhesion to the roll after the predetermined time treatment (after 3 minutes) was measured in the same manner, and the results are shown in Table 1.
〔比較例１〕
　比較例１は、実施例１において冷却を行わない以外、実施例１と同様に処理を行った。所定時間処理後（３分後、３０分後）のロールへの付着量を同様に測定し、その結果を表１に示す。 [Comparative Example 1]
The comparative example 1 performed the process similarly to Example 1 except not cooling in Example 1. FIG. The amount of adhesion to the roll after the predetermined time treatment (after 3 minutes and 30 minutes) was measured in the same manner, and the results are shown in Table 1.
〔比較例２〕
　比較例２は、実施例２において塗布後の冷却を行わない以外、実施例２と同様に処理を行った。つまり、比較例２においては、冷却工程としては予備冷却のみを行っている。所定時間処理後（３分後）のロールへの付着量を同様に測定し、その結果を表１に示す。 [Comparative Example 2]
In Comparative Example 2, the treatment was performed in the same manner as in Example 2 except that cooling after coating was not performed in Example 2. That is, in Comparative Example 2, only preliminary cooling is performed as the cooling process. The amount of adhesion to the roll after the predetermined time treatment (after 3 minutes) was measured in the same manner, and the results are shown in Table 1.
〔比較例３〕
比較例３は、ロール４４として表面にフッ素樹脂をコーティングした離型性の良いロールを使用した。それ以外は比較例１と同様に処理を行い、所定時間処理後（３分後）のロールへの付着量を、比較例１と同様に測定し、その結果を表１に示す。 [Comparative Example 3]
In Comparative Example 3, a roll having a good releasability having a surface coated with a fluororesin was used as the roll 44. Otherwise, the treatment was performed in the same manner as in Comparative Example 1, and the amount of adhesion to the roll after the predetermined time treatment (after 3 minutes) was measured in the same manner as in Comparative Example 1, and the results are shown in Table 1.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　表１に示す実施例１及び比較例１の結果から明らかなように、スキンケア剤を塗布した表面シートを冷却した場合（実施例１）のロールへの付着量は、３０分経過後では、冷却しない場合（比較例１）のロールへの付着量に比べて顕著に少ないことが分かり、表面シートを冷却した実施例１の方が、搬送設備を汚し難い効果を奏することが分かった。表１に示す実施例１及び比較例１の結果から明らかなように、前述した搬送設備を汚し難い効果が、３分経過後でも、現れることが分かった。
　表１に示す結果から明らかなように、スキンケア剤を塗布した表面シートを冷却した実施例１、２は、搬送ロール（ロール４４）へのスキンケア剤の付着量が、冷却しない場合（比較例１～３）に比べて少なく、搬送設備を汚し難い効果を奏することが分かった。一方、塗布後に冷却工程を有していない比較例１～３はスキンケア剤のロール４４への付着が認められた。 As is clear from the results of Example 1 and Comparative Example 1 shown in Table 1, the amount of adhesion to the roll when the surface sheet coated with the skin care agent was cooled (Example 1) was cooled after 30 minutes. It was found that the amount of adhesion to the roll in the case of not performing (Comparative Example 1) was remarkably small, and Example 1 in which the top sheet was cooled was found to have an effect of making it difficult to stain the transport equipment. As is clear from the results of Example 1 and Comparative Example 1 shown in Table 1, it was found that the above-described effect of hardly contaminating the transfer equipment appears even after 3 minutes.
As is apparent from the results shown in Table 1, in Examples 1 and 2 in which the surface sheet coated with the skin care agent was cooled, the amount of the skin care agent attached to the transport roll (roll 44) was not cooled (Comparative Example 1). It was found to be less in comparison with 3) and less effective to contaminate the transport equipment. On the other hand, in Comparative Examples 1 to 3, which did not have a cooling step after coating, adhesion of the skin care agent to the roll 44 was observed.
　本発明の吸収性物品の製造方法によれば、構成シートの一部にスキンケア剤が塗布された吸収性物品を、搬送設備にスキンケア剤を付着させ難くし、搬送設備を汚し難くして、効率よく連続的に製造することができる。さらには、スキンケア剤を吸収性物品の必要としない部位に移行させ難くすることができる。 According to the method for manufacturing an absorbent article of the present invention, an absorbent article in which a skin care agent is applied to a part of a constituent sheet is made difficult to attach a skin care agent to a conveyance facility, and the conveyance facility is hardly contaminated. It can be manufactured continuously well. Furthermore, it is possible to make it difficult to transfer the skin care agent to a site where the absorbent article is not required.
　また、本発明の吸収性物品の製造方法によれば、スキンケア剤を吸収性物品の必要としない部位に移行させ難くしながら、表面シートにスキンケア剤が塗布された吸収性物品を、効率よく連続的に製造することができる。 In addition, according to the method for manufacturing an absorbent article of the present invention, it is difficult to transfer the skin care agent to a site where the absorbent article is not necessary, and the absorbent article having the skin sheet coated on the topsheet is efficiently and continuously produced. Can be manufactured automatically.

Claims (11)

  1. 　構成シートにスキンケア剤が塗布された吸収性物品を連続的に製造する吸収性物品の製造方法であって、
    　前記スキンケア剤は、２０℃で半固体又は固体のものであり、該スキンケア剤を溶融させた状態で帯状の構成シートの一面に塗布する塗布工程と、
    　前記帯状の構成シートの一面に塗布された前記スキンケア剤が、該帯状の構成シートを搬送する搬送設備に接触する前に、塗布された前記スキンケア剤を前記帯状の構成シートの一面側から流体で冷却する冷却工程とを具備する吸収性物品の製造方法。     A method for producing an absorbent article for continuously producing an absorbent article in which a skin care agent is applied to a component sheet,
    The skin care agent is a semi-solid or solid at 20 ° C., and the skin care agent is applied to one side of a belt-shaped component sheet in a molten state;
    Before the skin care agent applied to one surface of the strip-shaped constituent sheet contacts the transport facility for transporting the strip-shaped constituent sheet, the applied skin care agent is fluidized from one side of the strip-shaped constituent sheet. The manufacturing method of the absorbent article which comprises the cooling process to cool.
  2. 　前記塗布工程においては、前記帯状の構成シートを鉛直方向に搬送し、該帯状の構成シートに前記スキンケア剤を水平方向から塗布する請求の範囲第１項記載の吸収性物品の製造方法。 The method for manufacturing an absorbent article according to claim 1, wherein, in the application step, the belt-shaped constituent sheet is conveyed in the vertical direction, and the skin care agent is applied to the belt-shaped constituent sheet from the horizontal direction.
  3. 　前記塗布工程の前に、前記帯状の構成シートを予め流体で冷却する予備冷却工程を具備する請求の範囲第１項又は第２項に記載の吸収性物品の製造方法。 The method for manufacturing an absorbent article according to claim 1 or 2, further comprising a preliminary cooling step of cooling the strip-shaped constituent sheet with a fluid in advance before the coating step.
  4. 　前記冷却工程は、塗布された前記スキンケア剤を前記帯状の構成シートの両面側から前記流体で冷却する請求の範囲第１項ないし第３項の何れか１項に記載の吸収性物品の製造方法。 The said cooling process cools the apply | coated said skin care agent with the said fluid from the both surfaces side of the said strip | belt-shaped structure sheet, The manufacturing method of the absorbent article of any one of Claim 1 thru | or 3 .
  5. 　前記搬送設備は、前記帯状の構成シートを搬送する搬送ロールを有し、該搬送ロールは、その温度を下げる冷却手段を備えている請求の範囲第１項ないし第４項の何れか１項に記載の吸収性物品の製造方法。 The said conveyance equipment has a conveyance roll which conveys the said strip | belt-shaped structure sheet | seat, This conveyance roll is provided with the cooling means which lowers the temperature in any one of Claim 1 thru | or 4 The manufacturing method of the absorbent article of description.
  6. 　表面シートにスキンケア剤が塗布された吸収性物品を連続的に製造する吸収性物品の製造方法であって、
    　前記スキンケア剤は、２０℃で半固体又は固体のものであり、
    　前記表面シートを有する前記吸収性物品が長手方向に連続した吸収性物品連続体の前記表面シートに、その外面側から前記スキンケア剤を溶融させた状態で塗布する塗布工程と、
    　前記スキンケア剤の塗布された前記表面シート側に前記吸収性物品連続体を折り畳む前に、塗布された前記スキンケア剤を前記吸収性物品連続体の前記表面シート側を流体で冷却する冷却工程とを具備する吸収性物品の製造方法。     A method for producing an absorbent article for continuously producing an absorbent article in which a skin care agent is applied to a top sheet,
    The skin care agent is semi-solid or solid at 20 ° C.,
    An application step of applying the skin care agent in a melted state from the outer surface side to the surface sheet of the absorbent article continuous body in which the absorbent article having the surface sheet is continuous in the longitudinal direction;
    A cooling step of cooling the applied skin care agent with a fluid on the surface sheet side of the absorbent article continuum before folding the absorbent article continuum on the surface sheet side coated with the skin care agent. A method for manufacturing an absorbent article.
  7. 　前記塗布工程においては、溶融させた状態の前記スキンケア剤を、５０℃以上の温風でスプレー塗工する請求の範囲第６項記載の吸収性物品の製造方法。 The method for producing an absorbent article according to claim 6, wherein in the application step, the melted skin care agent is spray-coated with hot air of 50 ° C or higher.
  8. 　前記冷却工程においては、前記吸収性物品連続体を８０ｍ／ｍｉｎ以上の速度で搬送して、塗布された前記スキンケア剤を空気流により冷却する請求の範囲第６項又は第７項に記載の吸収性物品の製造方法。 The absorption according to claim 6 or 7, wherein in the cooling step, the absorbent article continuum is conveyed at a speed of 80 m / min or more, and the applied skin care agent is cooled by an air flow. A method for producing a functional article.
  9. 　前記塗布工程においては、前記吸収性物品連続体が通るトンネルを用い、該トンネル内で、前記スキンケア剤を塗布する請求の範囲第６項ないし第８項の何れか１項に記載の吸収性物品の製造方法。 The absorbent article according to any one of claims 6 to 8, wherein, in the application step, a skin through which the absorbent article continuum passes is used, and the skin care agent is applied in the tunnel. Manufacturing method.
  10. 　前記冷却工程においては、空気を送風する送風手段を用い、前記吸収性物品連続体の前記表面シート側に空気を送風して塗布された前記スキンケア剤を固体化する請求の範囲第６項ないし第９項の何れか１項に記載の吸収性物品の製造方法。 In the cooling step, the skin care agent applied by blowing air to the surface sheet side of the absorbent article continuum is solidified by using air blowing means for blowing air. The method for producing an absorbent article according to any one of claims 9 to 10.
  11. 　前記送風手段は、前記吸収性物品連続体を搬送する方向に対向する方向から空気を送風するように配されている請求の範囲第１０項記載の吸収性物品の製造方法。 The method for manufacturing an absorbent article according to claim 10, wherein the air blowing means is arranged to blow air from a direction opposite to a direction in which the absorbent article continuous body is conveyed.
PCT/JP2010/071158 2009-12-14 2010-11-26 Method for manufacturing absorptive article WO2011074389A1 (en)

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JP5748807B2 (en) * 2013-07-22 2015-07-15 ユニ・チャーム株式会社 Liquid application apparatus and liquid application method
JP5901703B2 (en) * 2014-06-30 2016-04-13 ユニ・チャーム株式会社 Liquid material coating method and liquid material coating apparatus
JP6475975B2 (en) * 2014-12-25 2019-02-27 ユニ・チャーム株式会社 Absorbent article manufacturing method and absorbent article manufacturing apparatus
JP5881915B1 (en) * 2015-04-09 2016-03-09 ユニ・チャーム株式会社 Manufacturing method and manufacturing apparatus for absorbent article sheet

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