WO2017115496A1 - Procédé de fabrication de feuille composite - Google Patents

Procédé de fabrication de feuille composite Download PDF

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Publication number
WO2017115496A1
WO2017115496A1 PCT/JP2016/076551 JP2016076551W WO2017115496A1 WO 2017115496 A1 WO2017115496 A1 WO 2017115496A1 JP 2016076551 W JP2016076551 W JP 2016076551W WO 2017115496 A1 WO2017115496 A1 WO 2017115496A1
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WO
WIPO (PCT)
Prior art keywords
sheet
elastic body
continuous elastic
cut
composite sheet
Prior art date
Application number
PCT/JP2016/076551
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English (en)
Japanese (ja)
Inventor
邦彦 桂川
瀧野　俊介
麻穂 植田
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 CN201680076698.2A priority Critical patent/CN108430775B/zh
Publication of WO2017115496A1 publication Critical patent/WO2017115496A1/fr

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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
    • A61F13/45—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/10—Removing layers, or parts of layers, mechanically or chemically

Definitions

  • the present disclosure relates to a method of manufacturing a composite sheet.
  • Patent Document 1 discloses a method of manufacturing a composite sheet having a stretching force having a large number of convex portions arranged neatly.
  • An object of the present invention is to provide a method for producing a composite sheet capable of easily producing a composite sheet having a portion having a large stretching force and a portion having a small stretching force in the machine direction.
  • the present invention comprises the steps of: (a) fixing a continuous elastic body extending in the machine direction to the first sheet conveyed in the machine direction; (b) one continuous elastic body fixed to the first sheet And (c) cutting the first sheet and the second sheet while interposing the continuous elastic body between the first sheet and the second sheet. And b. Bonding the second sheet to one another.
  • step b the dimension in the cross direction intersecting the machine direction of the remaining portion of the continuous elastic body in the cut portion is smaller than the dimension in the cross direction of the continuous elastic body having no cut portion. Therefore, since the dimension of the cross direction in a cutting part becomes small, a continuous elastic body can have a part with large elastic power, and a part with small elastic power in one continuous elastic body. For this reason, in the machine direction, it is possible to easily manufacture a composite sheet having a portion with a large stretch force and a portion with a small stretch force.
  • the cutting tool having a length dimension in the cross direction smaller than the dimension in the cross direction of the continuous elastic body overlaps a portion of the continuous elastic body in the thickness direction with the continuous elastic body Cutting at least one of the first and second sheets. For this reason, it is possible to provide a composite sheet in which the area of the cut portion in the first and second sheets is narrow.
  • a portion of the continuous elastic body overlaps the continuous elastic body in the thickness direction with a cutting tool having a length dimension in the cross direction larger than a size in the cross direction of the continuous elastic body At least one of the first and second sheets and at least one of the first and second sheets not overlapping the continuous elastic body in the thickness direction are cut. For this reason, the composite sheet in which the area of the cutting part in the 1st and 2nd sheet is large can be provided.
  • the continuous elastic body After applying an adhesive to the circumferential surface of the continuous elastic body, the continuous elastic body is fixed to the first and second sheets by the adhesive in the step c, and the step b after the step c is performed. And a part of the continuous elastic body is cut by the cutting tool. Therefore, since the continuous elastic body fixed to the 1st sheet and the 2nd sheet is cut, the precision of the cutting part of a continuous elastic body can be improved.
  • step b a part of the continuous elastic body is cut by the cutting tool inside the both side edges in the cross direction of the continuous elastic body. For this reason, since a cut end of the continuous elastic body is not generated in the step of cutting the continuous elastic body, the cut end does not enter the composite sheet, and the appearance of the composite sheet can be improved.
  • the cutting tool is fixed to the base so as to be inclined with respect to the machine direction. Therefore, when cutting the continuous elastic body, the force applied to the base can be dispersed in the machine direction.
  • the first and second sheets have a cut portion and are breathable, while the third sheet does not have a cut portion, so that waterproofness can be maintained, and a multifunctional composite sheet can be obtained. Can be provided.
  • the stretch force is reduced at the cut portion, while the stretch force is greater at the non-cut portion than at the cut portion.
  • the elastic body can have a portion having a large elastic force and a portion having a small elastic force. Therefore, according to the present invention, it is possible to easily manufacture a composite sheet having a large elastic force and a small elastic force in the machine direction.
  • FIG. 10 is an enlarged cross-sectional view of a continuous elastic body and a first sheet in a cross direction at a cutting portion.
  • deployment figure which expand
  • FIG. 10 is a plan view of a composite sheet obtained by a manufacturing apparatus having the cutting roller shown in FIG. 9.
  • positioning of the cutter The top view which shows the composite sheet obtained by the manufacturing apparatus which has a cutting roller of the modification 5 which changed arrangement
  • the front view which shows the front and back waist area which used the composite sheet. Partially enlarged view of front and rear waist area.
  • the perspective view which looked at the disposable wearing article (diaper) which used the composite sheet concerning the present invention from the front.
  • the following embodiments relate to the method of manufacturing the composite sheet 106 shown in FIGS. 1 to 19 according to the present invention, and include not only the essential configuration of the invention but also selective and preferable configurations.
  • the manufacturing apparatus 100 of the composite sheet 106 that implements the method of manufacturing the composite sheet 106 according to this embodiment has a machine direction (conveying direction) in which the first sheet 101 that is a continuous sheet is conveyed. It has an MD, a cross direction CD orthogonal to the machine direction MD, and a thickness direction Z orthogonal to the machine direction MD and the cross direction CD.
  • the manufacturing apparatus 100 will be described from the upstream side to the downstream side in the machine direction MD.
  • a second sheet 102 which is a continuous sheet, is formed on a cutting portion (step b) 130 which forms a cut portion (through hole) 104a by cutting a part at intervals in the machine direction MD and forming an upper surface of the first sheet 101.
  • a junction (c process) 14 for feeding the first sheet 101 and the second sheet 102 in a state in which the continuous elastic body 103 is interposed between the first sheet 101 and the second sheet 102. Including the door.
  • the continuous sheet which is the first and second sheets 101 and 102 is, for example, continuous in the machine direction MD having a thickness of 0.3 to 1.0 mm and a weight of 15 to 30 g / m 2 .
  • SMS spunbond, meltblown, spunbond
  • fiber non-woven fabric spunbond fiber non-woven fabric or air-through fiber non-woven fabric
  • plastic sheet apertured plastic sheet, and laminate sheet thereof can be used.
  • the continuous elastic body 103 may be in the form of a string, a strand, or a ribbon.
  • the continuous elastic body 103 has a fineness of 450 to 1240 dtex and is fixed to at least the first sheet 101 in a state of being stretched 1.5 to 3.5 times from a contracted or relaxed state.
  • the transport unit 110 has a transport roller 111 for transporting the first sheet 101 in the machine direction MD.
  • a plurality of transport units 110 may be provided, and may be disposed after the bonding unit 140.
  • the conveyance section 110 is configured by a pair of conveyance rollers, and the first sheet 101 is passed between the pair of conveyance rollers, and the first sheet 101 is rotated in the machine direction MD by rotation driving of one of the pair of conveyance rollers.
  • One sheet 101 may be conveyed.
  • the continuous elastic body fixing portion 120 is configured by a pair of rollers 121 and 122 of a first roller 121 positioned above in the thickness direction Z and a second roller 122 positioned below. , 122, the continuous elastic body 103 coated with an adhesive such as a hot melt adhesive and the first sheet 101 are supplied to the entire circumferential surface, and the continuous elastic body 103 is pressed against the first sheet 101; The continuous elastic body 103 extending in the machine direction MD is fixed to the first sheet 101
  • FIG. 3 is a plan view of the first sheet 101 after passing the continuous elastic body fixing portion 120.
  • the dimension of the cross direction CD of the first sheet 101 is L1
  • ten continuous elastic bodies 103 are fixed to the upper surface of the first sheet 101, respectively.
  • the plurality of continuous elastic bodies 103 are spaced apart from one another in the cross direction CD, and are arranged, for example, at equal intervals.
  • the cutting unit 130 includes a cutting roller 132 having a plurality of cutters (cutting tools) 131 on its circumferential surface, as shown in FIG.
  • the cutter 131 is disposed ten on the circumferential surface of the roller in the cross direction CD, and a plurality of cutters 131 are disposed in the circumferential direction at equal intervals, for example.
  • the arrangement interval of the cutters 131 in the cross direction CD of the cutting roller 132 is the same as the interval of the cross direction CD of the continuous elastic body 103.
  • the cutting unit 130 and the bonding unit 140 are a pair of rollers 133 of the third roller 133 located on the left in FIG. 2 and the fourth roller 134 located on the right in FIG. 2 in the machine direction MD. 134 and an endless belt 135 passed over the rollers 133 and 134, and has a pressing portion 136 for pressing the first sheet 101 and the continuous elastic body 103.
  • the third roller 133 is disposed below the cutting roller 132, and the fourth roller 134 is disposed below the roller 141 of the joint portion 140.
  • FIG. 4 is an enlarged cross-sectional view of the continuous elastic body 103 in the cross direction CD and the first sheet 101 in the cutting portion 130
  • FIG. 5 shows the arrangement of the cutters 131 of the cutting roller 132. It is the expanded view which expand
  • the cutters 131 are arranged at equal intervals, for example, in the circumferential direction R (the machine direction MD in FIG. 5) of the cutting roller 132 and the cross direction CD.
  • the dimension L 11 in the cross direction CD of each cutter 131 is the size of the fineness in the cross direction CD of the continuous elastic body 103 (the size of the fineness in the cross direction CD of the continuous elastic body 103 is the continuous elastic body 103).
  • the cut portion 104a is formed by cutting with the cutter 131 at the central part of the cross direction CD in the continuous elastic body 103 (continuous elasticity
  • the dimension of the cross direction CD of the body 103 is L12
  • the portion where the cut portion 104a exists loses the stretchability, while the remaining portion 105 in the continuous elastic body 103 maintains the stretchability.
  • the dimension of the cross direction CD of the continuous elastic body 103 in the portion having the cut portion 104a is a cut portion by the formation of the cut portion (the portion having the cut portion) 104a. Since it becomes smaller than the dimension of the cross direction CD of the continuous elastic body 103 before forming 104 a, the stretching force (elastic force) is reduced as compared with the portion where the cut portion 104 a is not formed.
  • the dimension of the cross direction CD of the remaining portion 105 in the continuous elastic body 103 having the cut portion 104a is such that the right dimension of the cut portion 104a is L13 in FIG.
  • the left dimension is L14
  • the total dimension of the cross direction CD of the remaining portion 105 of the continuous elastic body 103 in the cut portion 104a is the sum of the dimension L13 and the dimension L14, and the dimension of the cross direction CD of the cut portion 104a
  • the dimension L12 is smaller than the dimension of the cross direction CD of the continuous elastic body 103 not having the cut portion 104a.
  • a part of the first sheet 101 overlapping the continuous elastic body 103 is also cut in the thickness direction Z, and the cut portion 104 b is formed in the first sheet 101.
  • FIG. 6 is a plan view of the first sheet 101 after passing through the cutting unit 130. Since the cutters 131 of the cutting roller 132 are arranged at equal intervals in the circumferential direction, the cut portion 104 a of the continuous elastic body 103 and the cut portion 104 b of the first sheet 101 are arranged at intervals in the machine direction MD. The Rukoto. Further, a part of the continuous elastic body 103 is cut by the cutter 131 inside the both side edges 103 a in the cross direction CD of the continuous elastic body 103.
  • the joint portion 140 is constituted by the roller 141 and the pressing portion 136, and the continuous elasticity between the roller 141 and the endless belt 135 above the fourth roller 134 is achieved.
  • the first sheet 101 to which the body 103 is fixed and the second sheet 102 are supplied, the second sheet 102 is pressed against the upper surface of the first sheet 101, and the adhesive applied to the circumferential surface of the continuous elastic body 103 The second sheet 102 is fixed above the first sheet 101 and the continuous elastic body 103.
  • FIG. 7 is a plan view of the composite sheet 106 after passing through the joint portion 140
  • FIG. 8 is a cross-sectional view of FIG. 7 along arrows VIII-VIII.
  • the composite sheet 106 includes the first sheet 101 and the second sheet 102 with an adhesive applied to the circumferential surface of the continuous elastic body 103 with the continuous elastic body 103 interposed between the first sheet 101 and the second sheet 102.
  • the sheet 102 is bonded to one another.
  • the stretching force of the continuous elastic body 103 is weakened, while in the portion having the non-cut portion not having the cut portions 104a and 104b, the cut portion 104a, Since the stretching force is stronger than that of the portion having 104 b, one continuous elastic body 103 can have a portion with a strong stretching force and a portion with a weak stretching force.
  • the continuous elastic body 103 extends continuously in the lateral direction X, there is no need to rock the continuous elastic body 103 in the cross direction CD, and the first sheet 101 can be machined in the machine direction. There is no need to slow down to MD. Therefore, the first and second sheets 101 and 102 and the continuous elastic body 103 can be transported at high speed in the machine direction MD.
  • FIG. 9 is a developed view similar to FIG. 5, showing a modified example of the cutting roller 132.
  • the cutters 131 are disposed to be inclined with respect to the machine direction MD and the cross direction CD, respectively. Therefore, when cutting the continuous elastic body 103, the force applied to the cutter 131 can be dispersed in the machine direction MD, and the force applied to the base portion 132a of the cutting roller 132 to which the cutter 131 is fixed is dispersed. Damage to the base portion 132a can be suppressed.
  • FIG. 10 is a plan view of a composite sheet 106 obtained using the manufacturing apparatus 100 having the cutting roller 132 having the cutter 131 shown in FIG. Since each cutter 131 is disposed to be inclined with respect to the machine direction MD and the cross direction CD, the first sheet 101 formed by the cutter 131 and the cut portions 104 a and 104 b of the continuous elastic body 103 are machine direction It inclines with respect to MD and cross direction CD, respectively. In addition, if the contact area of the continuous elastic body 103 in contact with the cutter 131 is increased, the force applied to the cutter 131 can be dispersed. For example, if the size of the machine direction MD of the cutter 131 is increased and the size of the cross direction CD is increased, the contact area of the continuous elastic body 103 in contact with the cutter 131 can be increased.
  • FIG. 11 is a perspective view of Modification 2 of the cutting roller 132.
  • the cutting roller 132 has a cutter existing area 131a in which five cutters 131 exist on the front side in FIG. 11, while the back side in FIG.
  • the cutter nonexistence region 131b in which the cutter 131 is not disposed is disposed in the above.
  • the first stretchable area in which the continuous elastic body 103 having the cut portion 104a is disposed. It is possible to form the composite sheet 106 having the 151 and the continuous elastic body 103 which does not have the cut portion 104 a, and the second elastic region 152 having a larger elastic force than the first elastic region 151.
  • the cutting roller of Modification 3 has a cutter existing area in which the cutter 131 exists and a cutter nonexistent area in which the cutter 131 is not arranged alternately arranged.
  • the cutter existing area may be disposed in a half circumferential part, while the cutter nonexistent area may be disposed in the remaining semi circumferential part.
  • a composite sheet as shown in FIG. 106 can be formed.
  • the lower five continuous elastic bodies 103 in FIG. 14 have the cut portions 104a only on the right side in FIG. 14, but do not have the cut portions 104a on the left side.
  • the upper five continuous elastic bodies 103 do not have at least one cut portion.
  • the cut portion 104a is disposed at the lower right corner of the four corners in FIG.
  • a second stretchable region 152 having a greater stretchability than the first stretchable region 151 is disposed.
  • the composite sheet 106 as shown in FIG. 15 can be formed.
  • the continuous elastic bodies 103 adjacent to each other in the cross direction CD have the positions of the cut portions 104a shifted from each other, and the distance between the cut portions 104a in the cross direction CD and the machine direction MD increases. It is possible to prevent the local stretching force of the
  • an adhesive is applied to the entire circumferential surface of the continuous elastic body 103, and the continuous elastic body 103 is fixed to the first and second sheets 101 and 102 continuously in the machine direction MD.
  • the continuous elastic body 103 alternately arranges the application portion to which the adhesive is applied and the non-application portion to which the adhesive is not applied, and as shown in FIG. In the portion having the cut portion 104a, the fixed region 153 (both the left and right side portions in FIG.
  • the manufacturing apparatus 100 can be made compact if the cutter 131 performs cutting of the continuous elastic body 103 and cutting for forming the cut portion 104 a in the continuous elastic body 103 to form the inelastic region. it can.
  • FIG. 17 is a cross-sectional view similar to FIG. 4 in the method of manufacturing the composite sheet 106 using the cutting roller 132 of the first embodiment.
  • the cutter 131 of the cutting roller 132 has a dimension L15 of the cross direction CD of the cutter 131 longer than a dimension of the continuous elastic body 103 in the cross direction CD.
  • the cut portion 104b of the first sheet 101 has a portion 104c overlapping the cut portion 104a of the continuous elastic body 103 in the thickness direction Z, and a portion 104d not overlapping the continuous elastic body 103 in the thickness direction Z Have.
  • the manufacturing apparatus 100 including the cutting roller 132, the composite sheet 106 in which the area of the cut portion 104b in the first sheet 101 is large can be provided.
  • FIG. 18 is a schematic configuration view similar to FIG. 1 in the manufacturing apparatus 100 of the third embodiment.
  • the manufacturing apparatus 100 supplies the continuous elastic body 103 having an adhesive applied to the circumferential surface to the upper surface of the first sheet 101 and supplies the second sheet 102, and the first sheet 101 and the second sheet 102 The first sheet 101 and the second sheet 102 are joined to each other with the continuous elastic body 103 interposed therebetween.
  • the continuous elastic body fixing portion 120 and the bonding portion 140 of the second sheet 102 are in common, and the a process and the c process are performed simultaneously.
  • the cutter 131 of the cutting roller 132 cuts a part of the first and second sheets 101 and 102 and a part of the continuous elastic body 103.
  • the manufacturing apparatus 100 since the continuous elastic body 103 fixed to the first sheet 101 and the second sheet 102 is cut by the cutter 131 of the cutting roller 132, the accuracy of the cut portion of the continuous elastic body 103 is improved. Can.
  • the endless belt 135 is stretched around the second roller 122 and the third roller 133 to form the pressing portion 136. Further, in a state in which the continuous elastic body 103 is interposed between the first sheet 101 and the second sheet 102, the cutting portion 132 a cuts the first and second sheets 101 and 102 and the continuous elastic body 103 by the cutting roller 132. , 104b and 104c.
  • FIG. 19 is a schematic configuration diagram of Modification 1 of the manufacturing apparatus 100 of the third embodiment.
  • this manufacturing apparatus 100 after forming cut portions in the first and second sheets 101 and 102 and the continuous elastic body 103, an adhesive is applied to the lower surface of the second sheet 102, and the cut portions are included.
  • the third sheet 109 is fixed to the upper surface of the second sheet 102 by supplying the third sheet 109 which is not waterproof.
  • the first and second sheets 101 and 102 have air permeability, and the third sheet 109 does not have a cut portion, waterproofness can be maintained, and multifunctionality can be achieved.
  • the composite sheet 106 can be supplied.
  • the number of continuous elastic bodies 103 is not limited to ten, and can be arbitrarily changed.
  • the fineness and the stretching ratio of each continuous elastic body 103 may be the same or may be different from each other.
  • the continuous elastic body 103 of the composite sheet 106 of the first to third embodiments is continuous in the machine direction MD except for the composite sheet 106 of the sixth modification of the first embodiment, and the composite of the sixth modification of the first embodiment
  • the continuous elastic body 103 of the sheet 106 is continuous in the machine direction MD except for the cut non-fixed area 154.
  • FIG. 20 A composite sheet 106 manufactured using the above manufacturing apparatus 100 and cut into a predetermined length in the machine direction MD is shown in FIG. As shown in FIG. 20, this composite sheet 106 has a longitudinal direction Y and a transverse direction X intersecting (orthogonal to) the first sheet 101 having the cut portion 104 b, and a second sheet 101 having no cut portion. It has a sheet 102 and a plurality of elastic bodies (cut continuous elastic body 103) 27A, 27B fixed to the first and second sheets 101, 102.
  • this composite sheet 106 is used for a disposable wearing article (diaper 10), the first sheet 101 is positioned on the skin facing surface side to form the inner sheet 21, and the second sheet 102 is positioned on the non-skin facing surface side.
  • the front and rear waist areas 13 and 14 are formed by the first and second sheets 101 and 102 (the rear waist area 14 is shown as an example in FIGS. 20 and 21). Since the inner surface sheet 21 has the cut portion 104b, air permeability can be improved, and since the outer surface sheet 23 does not have the cut portion, leakage of excrement can be prevented.
  • the diaper 10 has a longitudinal direction Y and a transverse direction X intersecting (orthogonal to) the diaper 10.
  • the diaper 10 has a skin-facing surface and a non-skin-facing surface facing it, an annular elastic waist panel 11 extending around the waist, and an elastic waist panel 11 includes an absorbent chassis (liquid absorbing structure) 12 mounted on the side facing the skin, a front waist area 13, a rear waist area 14, and a crotch area 15 located between the front and rear waist areas 13 and 14 .
  • an absorbent chassis liquid absorbing structure
  • the elastic waist panel 11 has an elastic belt function and includes a front waist panel 16 forming a front waist region 13 and a rear waist panel 17 forming a rear waist region 14.
  • the front and rear waist panels 16 and 17 have a rectangular shape defined by the inner edges 16a and 17a, the outer edges 16b and 17b, and the opposite edges 16c and 17c.
  • the opposite edges 16c of the front waist panel 16 and the opposite edges 17c of the rear waist panel 17 are superimposed on one another and are known in the case of side seams 18 spaced apart in the longitudinal direction Y, for example heat embossing / debossing
  • the waist opening 19 and the pair of leg openings 20 are formed by being connected by various heat welding means by processing, sonic or the like.
  • the front and rear waist panels 16 and 17 each include an inner sheet 21 positioned on the skin facing surface side and an outer sheet 23 positioned on the non-skin facing surface side.
  • the absorbent chassis 12 includes front and rear end portions 12A and 12B attached to the skin facing surfaces of the front and rear waist panels 16 and 17, a liquid absorbent core 43 extending in the longitudinal direction Y at least in the crotch region 15, and a liquid absorbent core 43
  • the top sheet 44 is formed of a hydrophilic fiber non-woven fabric located on the skin-facing side of the skin, and the hydrophobic or liquid-impervious fiber non-woven fabric located on the non-skin-facing side of the absorbent core 43
  • various known fiber non-woven fabrics such as SMS fiber non-woven fabric and spun-bonded non-woven fabric can be used.
  • the absorbent core 43 is a mixture of a required amount of superabsorbent polymer particles and fluff pulp, and has high rigidity and semi-rigidity as compared with the sheet member constituting the diaper 10.
  • the liquid-absorbent core 43 is in the form of a panel having a narrow central portion in the longitudinal direction Y, and the whole is covered with a liquid diffusive sheet 47 such as a tissue.
  • the top sheet 44 and the back sheet 45 extend outward from the peripheral edge portion of the liquid-absorbent core 43, and the extended portions are overlapped with each other and joined via a hot melt adhesive (not shown).
  • the side flaps 48 extend outward in the lateral direction X from the side edges 43C of the absorbent core 43
  • the end flaps 49 extend outward in the longitudinal direction Y from both end edges of the absorbent core. Be done.
  • the fineness of the upper waist elastic body 27A disposed above is larger than the fineness of the lower waist elastic body 27B disposed below, for example, the upper waist Since the expansion ratio of the elastic body 27A and the expansion ratio of the lower waist elastic body 27B are the same, the expansion and contraction force (retraction force) of the upper elastic region 28A in which the upper waist elastic body 27A is disposed is the lower waist elastic body.
  • the expansion force of the lower expansion zone 28B where the 27B is disposed is larger.
  • the lower waist elastic body 27B has a non-coated area to which the adhesive is not applied at the center in the lateral direction X, and is cut and shrunk at the lateral center in the non-applied area.
  • a non-contractile area 36 is formed which is not present.
  • FIG. 21 is a partially enlarged view of FIG. While the cut portion 104 a is not formed on the inner side in the lateral direction X of the ten lower waist elastic bodies 27 B, the cut portion 104 a is formed on the outer side of the lateral direction X.
  • a first stretchable area 29B is formed in a portion where the cut portion 104a of the lower waist elastic body 27B is formed, and in a portion where the cut portion 104a is not formed, an elastic force is larger than the first stretchable area 29B. 2
  • a stretchable area 29C is formed.
  • the magnitude of the stretching force of each elastic region becomes upper stretchable region 28A> second stretchable region 29C> first stretchable region 29B.

Abstract

L'invention fournit un procédé de fabrication de feuille composite qui permet de fabriquer facilement une feuille composite qui possède une portion grande force d'extension et une portion faible force d'extension, dans un sens machine. Le procédé de fabrication de la feuille composite (106) inclut : (a) une étape au cours de laquelle des corps élastiques continus (103) se prolongeant dans le sens machine (MD), sont fixés sur une première feuille (101) transportée dans le sens machine (MD) ; (b) une étape au cours de laquelle une partie d'un corps élastique continu (103) fixée sur une première feuille (101), est coupée à intervalles dans le sens machine (MD) ; et (c) une étape au cours de laquelle la première feuille (101) et une seconde feuille (102) sont liées l'une à l'autre dans un état dans lequel les corps élastiques continus (103) sont intercalés entre celles-ci.
PCT/JP2016/076551 2015-12-28 2016-09-09 Procédé de fabrication de feuille composite WO2017115496A1 (fr)

Priority Applications (1)

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CN201680076698.2A CN108430775B (zh) 2015-12-28 2016-09-09 复合片的制造方法

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JP2015257241A JP6719208B2 (ja) 2015-12-28 2015-12-28 複合シートの製造方法
JP2015-257241 2015-12-28

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JP (1) JP6719208B2 (fr)
CN (1) CN108430775B (fr)
BR (1) BR112018011718B1 (fr)
TW (1) TWI701143B (fr)
WO (1) WO2017115496A1 (fr)

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Publication number Priority date Publication date Assignee Title
EP3941738A4 (fr) * 2019-03-22 2023-06-14 Dukane IAS, LLC Appareil de fabrication d'un matériau non tissé élastique

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