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WO2016067462A1 - Procédé de fabrication de feuilles texturées et appareil de fabrication desdites feuilles texturées - Google Patents

Procédé de fabrication de feuilles texturées et appareil de fabrication desdites feuilles texturées Download PDF

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Publication number
WO2016067462A1
WO2016067462A1 PCT/JP2014/079101 JP2014079101W WO2016067462A1 WO 2016067462 A1 WO2016067462 A1 WO 2016067462A1 JP 2014079101 W JP2014079101 W JP 2014079101W WO 2016067462 A1 WO2016067462 A1 WO 2016067462A1
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WO
WIPO (PCT)
Prior art keywords
sheet
convex
concavo
uneven
speed
Prior art date
Application number
PCT/JP2014/079101
Other languages
English (en)
Japanese (ja)
Inventor
聡 光野
Original Assignee
ユニ・チャーム株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ユニ・チャーム株式会社 filed Critical ユニ・チャーム株式会社
Priority to CN201480083075.9A priority Critical patent/CN107073805B/zh
Priority to JP2015510528A priority patent/JP5771765B1/ja
Priority to PCT/JP2014/079101 priority patent/WO2016067462A1/fr
Publication of WO2016067462A1 publication Critical patent/WO2016067462A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing

Definitions

  • the present invention relates to an uneven sheet manufacturing method and an uneven sheet manufacturing apparatus.
  • An uneven sheet having an uneven shape may be used as a surface sheet for absorbent articles such as sanitary napkins and disposable diapers.
  • a concavo-convex shape is formed on the first sheet by supplying the first sheet between two rotating bodies that have concavo-convex portions opposed to each other on the peripheral surface portion. Thereafter, there is a method in which the second sheet is supplied so as to overlap the first sheet and the both sheets are joined (see Patent Document 1).
  • the main invention for achieving the above object is that the sheet is heated while the sheet passes through the rotator having an uneven shape on the outer peripheral surface, thereby forming the concavo-convex sheet having the concavo-convex shape; and Conveying the concavo-convex sheet having passed at a speed slower than the peripheral speed of the rotating body.
  • FIG. 1A is a side view of the concavo-convex sheet of the first embodiment viewed from the width direction
  • FIG. 1B is a plan view of the concavo-convex sheet
  • FIG. 1C is a cross-sectional view of the concavo-convex sheet cut in a continuous direction and a thickness direction
  • FIG. 1D is a cross-sectional view of the uneven sheet cut in the width direction and the thickness direction. It is explanatory drawing of the manufacturing apparatus of the uneven
  • FIG. 3A is an explanatory view of the concavo-convex sheet immediately after being sent out from the first embossing roller, and FIG.
  • 3B is an explanatory view of the concavo-convex sheet sent out from the speed adjustment conveyor. It is explanatory drawing of the manufacturing apparatus of the uneven
  • 6A and 6B are explanatory diagrams of the uneven sheet according to the fourth embodiment. It is explanatory drawing of the manufacturing apparatus of the uneven
  • a method of manufacturing a concavo-convex sheet comprising transporting at a speed slower than a peripheral speed. According to such a method for producing a concavo-convex sheet, the tension applied to the concavo-convex sheet that has passed through the rotator can be reduced, so that the concavo-convex sheet that is stretched when leaving the rotator is contracted or the concavo-convex sheet is strongly pulled. It is possible to suppress the stretching in the conveying direction. Therefore, it is possible to suppress a decrease in the height of the convex portion of the concavo-convex sheet and to make the convex portion difficult to be crushed.
  • a method for producing such a concavo-convex sheet wherein the concavo-convex sheet that has passed through the rotator is transported at a speed slower than the peripheral speed of the rotator, and the concavo-convex sheet is a suction conveyor It is a manufacturing method. According to such a method for manufacturing a concavo-convex sheet, the concavo-convex sheet can be conveyed without being sandwiched, and the concavo-convex sheet can be cooled to harden the concavo-convex shape quickly.
  • a method for producing such a concavo-convex sheet wherein the concavo-convex sheet is interposed between a rotator and a transport mechanism that transports the concavo-convex sheet that has passed through the rotator at a speed slower than a peripheral speed of the rotator. It is the manufacturing method of the uneven
  • a method for manufacturing such a concavo-convex sheet in which the sheet passes through the rotator, and after the concavo-convex shape is formed on the sheet, the rotator and the other rotator,
  • a method for producing a concavo-convex sheet comprising forming the concavo-convex sheet by sandwiching and joining the sheet.
  • the concavo-convex sheet is less likely to be stretched in the transport direction than when other sheets are not joined, so that the reduction in the height of the concavo-convex sheet convex portion is suppressed, and the convex portion Can be made difficult to crush.
  • a method for manufacturing such a concavo-convex sheet wherein the other sheet supplied to the other rotator is transported at a speed slower than a peripheral speed of the rotator.
  • the other sheet is joined to the sheet in a state of being stretched in the conveyance direction. The height of the can be increased, and the convex portion can be made difficult to be crushed.
  • a method for producing such a concavo-convex sheet wherein the sheet supplied to the rotator is conveyed at a speed faster than the peripheral speed of the rotator.
  • the density of the convex portions of the concavo-convex sheet is increased and the compression resistance of the convex portions is improved, so that the convex portions can be made difficult to be crushed.
  • a method for manufacturing such a concavo-convex sheet comprising forming the concavo-convex sheet comprising a concavo-convex shape and a flat shape side by side in a width direction intersecting with the conveying direction of the sheet.
  • the concavo-convex sheet can be prevented from being strongly pulled and stretched in the transport direction, the decrease in the height of the convex part of the concavo-convex sheet can be suppressed, and the convex part is hardly crushed. Can do.
  • the sheet is heated while the sheet passes through the rotator having an irregular shape on the outer peripheral surface, and the concavo-convex sheet having the concavo-convex shape is heated, and the concavo-convex sheet that has passed through the rotator is rotated. And a mechanism for transporting at a speed slower than the peripheral speed of the body.
  • the tension applied to the concavo-convex sheet that has passed through the rotator can be weakened, so that the concavo-convex sheet that is stretched when leaving the rotator is contracted or the concavo-convex sheet is pulled strongly. It is possible to suppress the stretching in the conveying direction. Therefore, it is possible to suppress a decrease in the height of the convex portion of the concavo-convex sheet and to make the convex portion difficult to be crushed.
  • FIG. 1A is a side view of the concavo-convex sheet 1 according to the first embodiment as viewed from the width direction
  • FIG. 1B is a plan view of the concavo-convex sheet 1
  • FIG. 1C illustrates the concavo-convex sheet 1 in a continuous direction and a thickness direction
  • FIG. 1D is a cross-sectional view of the concavo-convex sheet 1 cut in the width direction and the thickness direction.
  • a continuous direction three directions orthogonal to each other in the concavo-convex sheet 1 are referred to as a “continuous direction”, a “width direction”, and a “thickness direction” in which the concavo-convex sheet 1 continues.
  • the uneven sheet 1 of the first embodiment is formed by bonding the unevenly shaped first sheet 2 to the surface on one side in the thickness direction of the second sheet 3 whose both surfaces are flat.
  • the sheet has a two-layer structure. Specifically, the convex portion 4 and the concave portion 5 are formed on the surface on one side in the thickness direction of the first sheet 2, and the first sheet 2 and the second sheet 3 are partially in the concave portion 5 of the first sheet 2. Are joined (heat-sealed).
  • seat 2 is a quadrangular frustum shape
  • the inside of the convex part 4 becomes the cavity 4a, and the cavity 4a is exposed in the surface of the thickness direction other side of the 1st sheet
  • the convex portions 4 (white coating portions) and the concave portions 5 (cross hatched portions) are alternately arranged along the continuous direction, and are also arranged alternately along the width direction. That is, the concave portion 5 is surrounded by the convex portion 4 in both the continuous direction and the width direction.
  • the length of the concave portion 5 in the continuous direction is shorter than the length of the convex portion 4 in the continuous direction, a part of the convex portions 4 adjacent in the width direction are joined.
  • each planar shape of the convex portion 4 and the concave portion 5 may be a circle, a square, a rhombus, or the like, and the convex portions 4 may be discretely arranged in a curved shape.
  • the convex portions 4 may be partially joined together, or the convex portions 4 may be completely surrounded by the concave portions 5.
  • corrugated shape may be sufficient.
  • seat 1 the nonwoven fabric containing a thermoplastic resin fiber, a plastic film, etc. are mentioned.
  • an uneven sheet 1 is used as a surface sheet of an absorbent article such as a sanitary napkin, a disposable diaper, or a pet sheet used for animal excretion.
  • an absorbent article such as a sanitary napkin, a disposable diaper, or a pet sheet used for animal excretion.
  • the contact area between the user and the surface sheet can be reduced, the touch can be softened or the air permeability can be increased.
  • FIG. 1B by enclosing the concave portion 5 with the convex portion 4, high-viscosity excrement (menstrual blood or loose stool) that is difficult to permeate into the sheet can be taken into the concave portion 5, and the spread of excrement can be suppressed. .
  • the uneven sheet 1 is not limited to being used as the top sheet, and the uneven sheet 1 may be used as a second sheet between the top sheet and the absorber, for example. Moreover, you may use the uneven
  • Drawing 2 is an explanatory view of manufacturing device 10 of concavo-convex sheet 1 in a 1st embodiment.
  • 3A is an explanatory view of the uneven sheet 1 immediately after being sent out from the first embossing roller 18a
  • FIG. 3B is an explanatory view of the uneven sheet 1 that is sent out from the speed adjustment conveyor 21.
  • FIG. 1A is an explanatory view of the uneven sheet 1 immediately after being sent out from the first embossing roller 18a
  • FIG. 3B is an explanatory view of the uneven sheet 1 that is sent out from the speed adjustment conveyor 21.
  • the manufacturing apparatus 10 for the uneven sheet 1 includes a plurality of guide rollers 11a to 11e that define a conveyance path for the first sheet 2 and the second sheet 3, and a first roll around which the first sheet 2 is wound.
  • a first feeding roller 12 for feeding the first sheet 2 from R1 a second feeding roller 13 for feeding the second sheet 3 from the second roll R2 around which the second sheet 3 is wound, a first tension measuring roller 14,
  • the second tension measuring roller 15 the pair of first speed adjusting rollers 16, the pair of second speed adjusting rollers 17, the pair of embossing rollers 18 (mechanism for forming an uneven sheet), the joining roller 19, and the support conveyor 20 and a speed adjusting conveyor 21.
  • the first tension measuring roller 14 winds the first sheet 2 between the guide rollers 11a and 11b, and measures the tension of the first sheet 2 between the guide rollers 11a and 11b by the force received from the first sheet 2.
  • the second tension measuring roller 15 measures the tension of the second sheet 3 between the guide rollers 11c and 11d.
  • the pair of first speed adjustment rollers 16 (16a, 16b) are driven and rotated around a rotation axis along the width direction of the first sheet 2, and the first sheet 2 is held in the thickness direction while the first sheet 2 is sandwiched in the thickness direction.
  • These are a pair of rollers (nip rollers) that are sent to the downstream side in the transport direction at a speed of V1 (m / min).
  • Both rollers 16a and 16b may be drive rollers, or one may be a drive roller and the other may be a driven roller.
  • An example of the unit is “m / min”, but is not limited thereto.
  • the pair of second speed adjusting rollers 17 (17a, 17b) is driven and rotated around the rotation axis along the width direction of the second sheet 3, and the second sheet 3 is sandwiched in the thickness direction while the second sheet 3 is sandwiched in the thickness direction.
  • 3 is a pair of rollers that feeds 3 to the downstream side in the transport direction at a second speed V2 (m / min) slower than the first speed V1 (V1> V2).
  • the pair of embossing rollers 18 includes a first embossing roller 18a and a second embossing roller 18b that are driven and rotated around a rotation axis along the width direction of the first sheet 2 and the second sheet 3.
  • Convex portions 181 and concave portions 182 are formed on the outer peripheral surfaces of the first and second embossing rollers 18a and 18b in accordance with the concave and convex shapes to be formed on the first sheet 2, and the convex portions of the first embossing roller 18a are formed.
  • the part 181 and the concave part 182 and the convex part 181 and the concave part 182 of the second embossing roller 18b are in mesh with each other.
  • a heater 183 is provided inside each of the first and second embossing rollers 18a and 18b, and each outer peripheral surface is heated. Moreover, in the 1st embossing roller 18a, the 1st sheet
  • the joining roller 19 is a roller that is driven and rotated around the rotation axis along the width direction of the first sheet 2 and the second sheet 3, and is located at a position downstream of the engagement direction of the pair of embossing rollers 18 in the transport direction. It is provided facing the embossing roller 18a. In addition, a heater 191 is provided inside the joining roller 19 and the outer peripheral surface is heated.
  • each outer peripheral surface of the pair of embossing rollers 18 and the joining roller 19 is set to a temperature lower than the melting point of the constituent materials of the first sheet 2 and the second sheet 3. Further, it is sufficient that at least one of the first and second embossing rollers 18a and 18b is heated, and at least one of the first embossing roller 18a and the joining roller 19 only needs to be heated.
  • the support conveyor 20 includes a plurality of rollers 201 that rotate around a rotation axis along the width direction of the uneven sheet 1, and a belt 202 that is wound around the plurality of rollers 201. Transport to.
  • the speed adjustment conveyor 21 is provided on the downstream side in the transport direction from the support conveyor 20, and is provided in a plurality of rollers 211 rotating around a rotation axis along the width direction of the uneven sheet 1, a belt 212, and the belt 212.
  • a suction conveyor having a suction box 213.
  • the belt 212 is provided with a through-hole penetrating in the thickness direction, and the uneven sheet 1 on the belt 212 is conveyed downstream in the conveyance direction while being attracted to the belt 212 by suction from the suction box 213.
  • the speed adjusting conveyor 21 sends the uneven sheet 1 to the downstream side in the transport direction at a third speed V3 (m / min) slower than the first speed V1 and the second speed V2 (V1> V2> V3).
  • the first sheet 2 is fed from the first roll R ⁇ b> 1 by the first feeding roller 12, and the first sheet 2 includes the guide roller 11 a, the first tension measuring roller 14, and the guide. It is conveyed while being wound around the roller 11b in order.
  • the controller (not shown) of the manufacturing apparatus 10 for the concavo-convex sheet 1 starts from the first tension measuring roller 14 so that the first sheet 2 is conveyed to the pair of first speed adjusting rollers 16 with a predetermined tension. Based on the acquired tension of the first sheet 2, the feeding amount of the first sheet 2 from the first feeding roller 12 is controlled.
  • the tension of the first sheet 2 conveyed to the pair of first speed adjustment rollers 16 is set as low as possible, specifically, the first sheet 2 is conveyed without being loosened.
  • the tension per unit width (50 mm) is set within a range of 1 to 3N, but is not limited thereto.
  • the first sheet 2 adjusted to a predetermined tension is conveyed between the pair of embossing rollers 18 by the pair of first speed adjusting rollers 16 at the first speed V1.
  • the control unit controls the peripheral speed Va (m / min) of the pair of first speed adjustment rollers 16 (usually, the sheet conveyance speed V1 and the roller peripheral speed Va are controlled to be substantially the same value. )
  • the second sheet 3 is also fed from the second roll R2 by the second feeding roller 13 and conveyed while being wound around the guide roller 11c, the second tension measuring roller 15, and the guide roller 11d in order, and has a predetermined tension (this embodiment).
  • it is controlled to be conveyed to the pair of second speed adjusting rollers 17 with the same tension as that of the first sheet 2.
  • the second sheet 3 is conveyed between the first embossing roller 18a and the joining roller 19 at a second speed V2 (m / min) slower than the first speed V1 by the pair of second speed adjusting rollers 17.
  • the control unit controls the peripheral speed Vb (m / min) of the pair of second speed adjustment rollers 17 to be slower than the peripheral speed Va (m / min) of the pair of first speed adjustment rollers 16.
  • each outer peripheral surface of a pair of embossing rollers 18 is heated, while the 1st sheet 2 which passed between a pair of embossing rollers 18 is softened, the meshing shape of a pair of embossing rollers 18, ie, Shaped into an uneven shape.
  • the first sheet 2 that has been formed with irregularities is conveyed between the first embossing roller 18 a and the joining roller 19 while adsorbing along the irregular shape of the outer peripheral surface of the first embossing roller 18 a.
  • each outer peripheral surface of the 1st embossing roller 18a and the joining roller 19 is also heated, between the 1st embossing roller 18a and the joining roller 19, the 1st sheet
  • seat 3 are piled up and heated.
  • bonding thermal fusion
  • the convex portion 181 of the embossing roller 18a and the outer peripheral surface of the joining roller 19 are sandwiched and joined. Thus, the uneven sheet 1 is formed.
  • the concavo-convex sheet 1 sent out from the first embossing roller 18a and the joining roller 19 is conveyed downstream in the conveying direction by the support conveyor 20 while the flat surface on the second sheet 3 side is supported from the lower side in the vertical direction.
  • the uneven sheet 1 is supported by the speed adjusting conveyor 21 from the lower side in the vertical direction and is adsorbed to the belt 212, and the third speed V3 (m, which is slower than the first speed V1 and the second speed V2). / Min), the sheet is conveyed to a process downstream in the conveyance direction.
  • the first speed V1 (m / min) of the first sheet 2 conveyed between the pair of embossing rollers 18 is made faster than the second speed V2 (m / min) of the uneven sheet 1 fed out by
  • corrugated sheet 1 which the adjustment conveyor 21 sends out is made slow (V1> V2> V3).
  • control unit has a pair of first embossing rollers 18a (tips of the convex portions 181) compared with the peripheral speed Vb (m / min) and the peripheral speed Vb (m / min) of the joining roller 19. Control is performed so that the peripheral speed Va (m / min) of the speed adjusting roller 16 is increased and the peripheral speed Vc (m / min) of the belt 212 of the speed adjusting conveyor 21 is decreased (Va> Vb> Vc).
  • the peripheral speed Vb of the second embossing roller 18b is made equal to the peripheral speed Vb of the first embossing roller 18a.
  • the second speed V2 (m / min) of the second sheet 3 conveyed between the first embossing roller 18a and the joining roller 19 is the second of the uneven sheet 1 that the first embossing roller 18a and the joining roller 19 send out.
  • the speed V2 (m / min) is set equal to the speed V2 (m / min)
  • the peripheral speed Vb (m / min) of the pair of second speed adjusting rollers 17 is set to the peripheral speed Vb (m / min) of the first embossing roller 18a (tip of the convex portion 181).
  • the first sheet 2 passes through the first embossing roller 18a (rotary body) whose outer peripheral surface forms an concavo-convex shape.
  • seat 2 is heated and the uneven
  • the tension applied to the concavo-convex sheet 1 is increased when leaving the first embossing roller 18a.
  • the speed of the concavo-convex sheet 1 sent out by the speed adjusting conveyor 21 is set to be equal to or higher than the speed of the concavo-convex sheet 1 sent out by the first embossing roller 18a, the rugged sheet 1 is applied when leaving the first embossing roller 18a.
  • the concavo-convex sheet 1 is conveyed while being stretched by tension, or the concavo-convex sheet 1 is strongly pulled and conveyed, and the concavo-convex sheet 1 is further stretched.
  • corrugated sheet 1 is extended in a conveyance direction, the height (thickness) of the convex part 4 of the uneven
  • the speed adjusting conveyor 21 causes the concavo-convex sheet 1 that has passed through the first embossing roller 18a to travel at a speed Vc that is slower than the peripheral speed Vb of the first embossing roller 18a (rotating body). Carry in. That is, the peripheral speed Vc of the belt 212 of the speed adjusting conveyor 21 is made slower than the peripheral speed Vb of the first embossing roller 18a (Vb> Vc), and the first embossing roller 18a (the tip of the convex portion 181) is conveyed.
  • the speed V3 of the concavo-convex sheet 1 conveyed and sent out by the speed adjusting conveyor 21 is made slower than the speed V2 of the concavo-convex sheet 1 sent out (V2> V3).
  • the peripheral speed of the rotating body in the present invention refers to the peripheral speed of the tip portion of the convex portion of the outer peripheral surface of the rotating body having an uneven shape, that is, the maximum diameter portion of the rotating body.
  • the height h2 of the convex portion 4 of the concavo-convex sheet 1 sent out from the speed adjusting conveyor 21 is made higher than the height h1 of the convex portion 4 of the concavo-convex sheet 1 immediately after being sent out from the first embossing roller 18a.
  • it can suppress that the uneven
  • corrugated sheet 1 can be suppressed, and the convex part 4 can be made hard to be crushed.
  • corrugated sheet 1 can also be suppressed by suppressing the elongation of the uneven
  • the length of the concavo-convex sheet 1 sent out per unit time by the first embossing roller 18a (for example, L1 in FIG. 3A). )
  • the length (for example, L2 in FIG. 3B) of the concavo-convex sheet 1 sent out per unit time by the speed adjusting conveyor 21 is shortened.
  • the circumferential speed difference between the first embossing roller 18a and the speed adjusting conveyor 21 may be set according to the contraction amount (return amount to the natural state) of the uneven sheet 1 so that the uneven sheet 1 does not accumulate.
  • the speed adjustment conveyor 21 (conveyance mechanism) which is a suction conveyor is the speed Vc slower than the circumferential speed Vb of the 1st embossing roller 18a for the uneven
  • seat 1 which passed the 1st embossing roller 18a.
  • corrugated sheet 1 can be made hard to be crushed compared with the case where the speed of the uneven
  • the speed adjusting conveyor 21 can be cooled by sucking and adsorbing the uneven sheet 1 heated while passing through the first embossing roller 18 a to the belt 212.
  • the concavo-convex shape of the concavo-convex sheet 1 can be quickly solidified, and the convex portions 4 can be made more difficult to be crushed.
  • the support conveyor 20 only supports the uneven sheet 1 from the lower side in the vertical direction without sucking and adsorbing the uneven sheet 1 to the belt 202. Therefore, the concavo-convex sheet 1 can relax the tension on the belt 202 of the support conveyor 20, and can contract and return to the natural state as shown in FIG. 3B.
  • the support conveyor 20 which is a conveyor which conveys the concavo-convex sheet 1 while being contractably supported between the speed adjustment conveyor 21 and the first embossing roller 18a, the concavo-convex sheet 1 is provided on the speed adjustment conveyor 21. It is possible to secure a time for the concavo-convex sheet 1 to contract before supplying, and to prevent the concavo-convex sheet 1 from being loosened by its own weight during the contraction of the concavo-convex sheet 1.
  • the peripheral speed Vc of the support conveyor 20 is made equal to the peripheral speed Vc of the speed adjustment conveyor 21 so that the uneven sheet 1 is easily contracted on the support conveyor 20.
  • the peripheral speed of the support conveyor 20 is set to be equal to or higher than the peripheral speed Vc of the speed adjusting conveyor 21 and less than the peripheral speed Vb of the first embossing roller 18a.
  • seat 1 which does not have the support conveyor 20 may be sufficient.
  • the support conveyor 20 and the speed adjustment conveyor 21 support the flat surface of the uneven sheet 1.
  • the convex part 4 of the concavo-convex sheet 1 can be made more difficult to be crushed.
  • the present invention is not limited thereto, and the uneven surface of the uneven sheet 1 may be opposed to the belt 202 of the support conveyor 20 and the belt 212 of the speed adjustment conveyor 21.
  • the uneven sheet 1 is not limited to being cooled by the speed adjusting conveyor 21 which is a suction conveyor, but the uneven sheet 1 may be cooled before being supplied to the speed adjusting conveyor 21.
  • seat 1 can be hardened earlier, the convex part 4 can be made hard to be crushed, and shrinkage
  • seat 1 can be accelerated
  • a cooling roller that conveys the concavo-convex sheet 1 while being in contact with the concavo-convex sheet 1 is provided between the first embossing roller 18 a and the speed adjustment conveyor 21, separately from the support conveyor 20. Good.
  • the first embossing roller 18a while the first sheet 2 passes through the first embossing roller 18a, and after forming an uneven shape on the first sheet 2, the first embossing roller 18a and the joining roller 19 (others A concavo-convex sheet is formed by sandwiching and joining the first sheet 2 and the second sheet 3 (other sheets) with a rotating body.
  • the uneven sheet 1 is stretched as compared with an uneven sheet having a single layer structure (that is, an uneven sheet formed only by the first sheet 2 having an uneven shape). It becomes difficult to be crushed and the convex part 4 can be made harder to crush.
  • the first sheet 2 and the second sheet 3 are not limited to be bonded by thermal fusion, but may be bonded by an adhesive or ultrasonic bonding, for example.
  • the pair of first speed adjusting rollers 16 supplies the first sheet 2 supplied to the first embossing roller 18a to be faster than the peripheral speed Vb of the first embossing roller 18a (the tip of the convex portion 181). It is conveyed at a high speed (circumferential speed) Va (Vb ⁇ Va).
  • the length of the first sheet 2 supplied per unit time to the first embossing roller 18a is the length of the first sheet 2 (unevenness) that the first embossing roller 18a (tip of the convex portion 181) sends out per unit time.
  • the length of the first sheet 2 in the shaped state) is longer.
  • the convex part 4 can be made difficult to be crushed.
  • FIG. 4 is an explanatory diagram of the manufacturing apparatus 10 for the uneven sheet 1 according to the second embodiment.
  • the peripheral speed Vb of the pair of second speed adjusting rollers 17 is equal to the peripheral speed Vb of the first embossing roller 18a.
  • the pair of second speed adjusting rollers 17 supplies the second sheet 3 (other sheet) supplied to the joining roller 19 (other rotating body) to the first embossing roller 18a ( It is conveyed at a speed (peripheral speed) Vd that is slower than the peripheral speed Vb of the convex portion 181 (Vb> Vd).
  • the 2nd sheet 3 supplied per unit time to the joining roller 19 rather than the length of the uneven
  • the length of is shorter. Therefore, in 2nd Embodiment, compared with 1st Embodiment, tension
  • the convex portions 4 of the concavo-convex sheet 1 are contracted. Height increases. Specifically, a portion of the second sheet 3 that is not joined to the first sheet 2, that is, a portion that becomes the bottom of the convex portion 4 contracts and the height of the convex portion 4 increases, so that the convex portion 4 is crushed. Can be difficult.
  • FIG. 5 is an explanatory diagram of the manufacturing apparatus 10 for the uneven sheet 1 according to the third embodiment.
  • corrugated sheet 1 which passed the 1st embossing roller 18a by the pair of speed adjustment roller (nip roller) 22 which pinches
  • the roller 18a is transported at a speed (peripheral speed) Vc that is slower than the peripheral speed Vb. Also in this case, the convex part 4 of the uneven
  • the convex portion 4 may be crushed. Then, the uneven
  • the concavo-convex sheet 1 having a two-layer structure is taken as an example.
  • the concavo-convex sheet 1 having a one-layer structure is not limited thereto.
  • the inside of the convex portion 4 is a cavity 4a, and the concave and convex sheet 1 may be exposed on the surface opposite to the side where the convex portion 4 is formed.
  • the uneven sheet 1 in which the surface on one side in the thickness direction is an uneven surface, the surface on the other side is a flat surface, and the inside of the convex portion 4 is not hollow.
  • FIG. 7 is an explanatory diagram of the manufacturing apparatus 10 for the uneven sheet 1 shown in FIG. 6A.
  • the first sheet 2 sent out from the pair of first speed adjustment rollers 16 is heated between the pair of embossing rollers 18 (that is, while passing through the first embossing roller 18 a), and uneven The concavo-convex sheet 1 is formed in a shape.
  • corrugated sheet 1 is sent out from a pair of embossing roller 18, and is conveyed by the conveyance direction downstream by the support conveyor 20 and the speed adjustment conveyor 21.
  • seat 1 can be made hard to be crushed by making the peripheral speed Vc of the speed adjustment conveyor 21 slower than the peripheral speed Vb of the 1st embossing roller 18a.
  • seat 1 shown to FIG. 6B can be formed by making the outer peripheral surface of the 2nd embossing roller 18b into a flat surface, for example.
  • seat 1 is formed by a pair of embossing rollers 18 (rotary body) is mentioned as an example so far, it is not restricted to this.
  • a sheet such as a fiber web passes through a rotator whose outer peripheral surface has a concavo-convex shape, hot air is blown onto the sheet, and the sheet is shaped along the concavo-convex shape of the rotator, thereby forming the concavo-convex sheet 1. It may be formed.
  • FIG. 8 is an explanatory diagram of the uneven sheet 1 according to the fifth embodiment.
  • the concavo-convex shape is formed in the entire region in the width direction, but not limited to this, as shown in FIG. 8, the conveyance direction (continuous direction) of the concavo-convex sheet 1
  • seat 1 provided with an uneven
  • the uneven portion and the flat portion have different thicknesses and differ in the manner in which the tension is applied during transportation. It will be transported. However, if the softened concavo-convex sheet 1 after passing through the first embossing roller 18a is pulled strongly, the concavo-convex sheet 1 is stretched in the transport direction, and the height of the convex part 4 decreases. Therefore, in the case of the concavo-convex sheet 1 in which the concavo-convex shape and the flat shape are arranged in the width direction, in particular, the concavo-convex sheet 1 that has passed through the first embossing roller 18a is the peripheral speed of the first embossing roller 18a.
  • the sheet is transported at a slower speed and the concavo-convex sheet 1 is cooled during that time to solidify the concavo-convex shape. And by suppressing that the uneven
  • the uneven sheet 1 in which the uneven shape and the flat shape are arranged in the width direction, the uneven sheet 1 is further cooled by a suction conveyor or the like, as in the above-described embodiment, so that the uneven shape can be quickly solidified, It is preferable to release the tension of the uneven sheet 1 with the support conveyor 20 during cooling of the uneven sheet 1, that is, while conveying the sheet with reduced tension, so that the sheet can be conveyed while suppressing generation of wrinkles.
  • the above embodiment is for facilitating understanding of the present invention, and is not intended to limit the present invention. Further, the present invention can be changed or improved without departing from the gist thereof, and needless to say, the present invention includes equivalents thereof.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

Cette invention concerne un procédé de fabrication de feuilles texturées caractérisé en ce qu'il comprend : la formation de la feuille texturée par chauffage d'une feuille pendant que ladite feuille passe entre des corps en rotation, dont les surfaces circonférentielles présentent une forme texturée, destinées à conférer la forme texturée ; et le transport de la feuille texturée qui est passée entre lesdits corps en rotation à une vitesse plus lente que la vitesse circonférentielle des corps en rotation.
PCT/JP2014/079101 2014-10-31 2014-10-31 Procédé de fabrication de feuilles texturées et appareil de fabrication desdites feuilles texturées WO2016067462A1 (fr)

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CN201480083075.9A CN107073805B (zh) 2014-10-31 2014-10-31 凹凸片的制造方法以及凹凸片的制造装置
JP2015510528A JP5771765B1 (ja) 2014-10-31 2014-10-31 凹凸シートの製造方法、及び、凹凸シートの製造装置
PCT/JP2014/079101 WO2016067462A1 (fr) 2014-10-31 2014-10-31 Procédé de fabrication de feuilles texturées et appareil de fabrication desdites feuilles texturées

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JP2017196277A (ja) * 2016-04-28 2017-11-02 王子ホールディングス株式会社 吸収性物品の製造方法および製造装置
JP2017196278A (ja) * 2016-04-28 2017-11-02 王子ホールディングス株式会社 吸収性物品の製造方法および製造装置
JP2017196276A (ja) * 2016-04-28 2017-11-02 王子ホールディングス株式会社 吸収性物品の製造方法および製造装置

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CN108348360B (zh) * 2015-11-04 2019-11-19 花王株式会社 吸收性物品的制造方法和吸收性物品的制造装置
JP6583154B2 (ja) * 2016-06-14 2019-10-02 王子ホールディングス株式会社 吸収性物品の加工装置及び加工方法並びに吸収性物品

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