WO2018154803A1 - Procédé et dispositif de production d'un élément étirable composite ayant des espaces de tunnel, et élément étirable composite ayant des espaces de tunnel - Google Patents

Procédé et dispositif de production d'un élément étirable composite ayant des espaces de tunnel, et élément étirable composite ayant des espaces de tunnel Download PDF

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Publication number
WO2018154803A1
WO2018154803A1 PCT/JP2017/022762 JP2017022762W WO2018154803A1 WO 2018154803 A1 WO2018154803 A1 WO 2018154803A1 JP 2017022762 W JP2017022762 W JP 2017022762W WO 2018154803 A1 WO2018154803 A1 WO 2018154803A1
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WO
WIPO (PCT)
Prior art keywords
base material
sheet
stretchable
bonding
substrate
Prior art date
Application number
PCT/JP2017/022762
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English (en)
Japanese (ja)
Inventor
昇二 日高
Original Assignee
株式会社サンツール
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Filing date
Publication date
Application filed by 株式会社サンツール filed Critical 株式会社サンツール
Priority to JP2017550642A priority Critical patent/JP6467522B2/ja
Publication of WO2018154803A1 publication Critical patent/WO2018154803A1/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
    • 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

Definitions

  • the present invention is a composite stretchable member comprising a non-stretchable sheet of a first base and a stretchable sheet of a second base, for forming a tunnel space formed between the two sheets.
  • the present invention relates to a method of manufacturing a compound stretchable member, a manufacturing apparatus, and a compound stretchable member.
  • a nonwoven fabric, paper, etc. are applied as a 1st base material and a 2nd base material.
  • an elastic member is joined to a sheet material in a stretched state, and the elastic member is It is widely practiced to shrink to form gathers (stretchable parts having a large number of folds) on the sheet material.
  • gathers stretchable parts having a large number of folds
  • a composite stretchable member of this type an elastic member whose longitudinal direction is the stretch direction is interposed between a plurality of sheet layers, and a linear joint portion located in a direction perpendicular to the stretch direction of the elastic member.
  • a disposable diaper provided with an elastic stretchable portion is known.
  • Patent Document 1 (title of the invention: a gatherer for disposable articles) is a composite stretchable member having two sheet members and a plurality of elastic members disposed between the two sheet members, The sheet material is partially bonded to form a plurality of bonding portions, and a plurality of bonding lines extending in a direction intersecting the expansion and contraction direction of the elastic member are formed by the plurality of bonding portions, Each elastic member R is fixed between the two sheet materials at at least a part of the joint portion, and each of the two sheet materials forms a gather (a weir) T 'between the adjacent joint lines.
  • a composite telescopic member is disclosed (see FIG. 10).
  • Patent document 2 roll transfer application method and application apparatus for hot melt adhesive
  • the patentee is the applicant of the present application, and referring to FIG.
  • the roll transfer application method of a hot melt adhesive including the step of transferring the hot melt adhesive applied to the portion from the convex surface 12 of the pattern roll to the surface of the coated substrate
  • the slot groove is the axial center of the pattern roll
  • a hot melt adhesive characterized in that a thin film hot melt adhesive is supplied only to the convex surface 12 of the pattern roll. It discloses Le transfer coating method.
  • the present invention applies the above-described invention to the bonding of two sheets (the non-stretchable sheet of the first base and the stretchable sheet of the second base), and a thin film hot melt is applied to a predetermined location of the base sheet.
  • a thin film hot melt is applied to a predetermined location of the base sheet.
  • the thin film hot melt adhesive is applied to the back surface of the non-stretchable sheet of the first base material in a pattern distribution by the convex surface of the pattern roll.
  • a transfer process Bonding the first base material coated with the thin film hot melt adhesive on the back side to the stretchable sheet of the second base material fed at a traveling speed of 1/2 or less to the first base , Including the bonding process, A method of manufacturing a composite stretchable member characterized in that the distribution of bonding positions and the cross-sectional shape of the tunnel space are set by making the stretchable non-woven fabric sheet natural length so that the distribution of bonding positions and the cross-sectional shape of tunnel space provide.
  • the thin film hot melt adhesive is applied to the back surface of the non-stretchable sheet of the first base material in a pattern distribution due to the convex surface of the pattern roll.
  • a transfer step a first base material coated with a thin film hot melt adhesive on the back side in the above step, and an elastic sheet of the second base material fed at a traveling speed of 1/2 or less with respect to the first base material; Including the pasting process of pasting place,
  • the pattern distribution by the convex portion surface of the pattern roll is a narrow straight line in the direction orthogonal to the traveling direction of the first base material, and the bonding / fixing part between the first base material and the second base material is the coated base material Intermittently present in a narrow straight line in the direction orthogonal to the longitudinal direction,
  • a method of manufacturing a composite stretchable member having a tunnel space wherein the tunnel space formed by making the stretchable non-woven sheet natural length is intermittently present in the direction orthogonal to the
  • the thin film hot melt adhesive is applied to the back surface of the non-stretchable sheet of the first base material in a pattern distribution due to the convex surface of the pattern roll.
  • a transfer process Bonding the first base material coated with the thin film hot melt adhesive on the back side to the stretchable sheet of the second base material fed at a traveling speed of 1/2 or less to the first base , Including the bonding process,
  • the pattern distribution by the convex portion surface of the pattern roll is a narrow straight line in the direction orthogonal to the traveling direction of the first base material
  • the bonding portion between the first base material and the second base material is the coated base material longitudinal Intermittently with narrow straight lines in the direction orthogonal to the direction, and divided into multiple sections with different narrow straight line intervals
  • the tunnel space formed by making the stretchable nonwoven sheet natural length is intermittently present in the direction orthogonal to the traveling direction of the coated substrate, and is divided into a plurality of application sections in which the cross-section
  • the present invention provides a method of manufacturing a composite stretchable member having a tunnel space.
  • the invention of claim 4 of the present application is a supply device of a non-stretchable sheet of a first substrate, a transfer device for transferring and applying a thin film hot melt adhesive to the first substrate, and a supply of an elastic sheet of a second substrate.
  • the number of rotations of the drive roller of the second base material supply device is equal to or less than half the number of rotations of the drive roller of the first base material supply device, and the pattern distribution by the convex surface of the pattern roll of the transfer device is the roll A manufacturing apparatus of a stretchable member characterized in that it is a narrow straight line in a direction orthogonal to the rotation direction.
  • the invention of claim 5 of the present application provides a supply device of a non-stretchable sheet of a first substrate, a transfer device for transferring and applying a thin film hot melt adhesive to the first substrate, and a supply of an elastic sheet of a second substrate.
  • the number of rotations of the drive roller of the second base material supply device is equal to or less than half the number of rotations of the drive roller of the first base material supply device
  • the pattern distribution by the convex surface of the pattern roll of the transfer device is the roll Production of a composite stretchable member having a tunnel space, characterized in that it is a narrow straight line in a direction orthogonal to the rotation direction, and is divided into a plurality of sections in which the narrow straight lines have different intervals in the roll rotation direction.
  • the pattern distribution by the surface of the convex portion of the pattern roll of the transfer device is a narrow straight line in the direction orthogonal to the roll rotation direction, and the spacing between narrow straight lines (pitch of the narrow straight line)
  • the invention of claim 7 of the present application is configured by laminating the non-stretchable sheet of the first base material and the stretchability of the second base material via the bonding and fixing portion with a thin film hot melt adhesive, and the first base material
  • the present invention provides a composite stretchable member having a tunnel space, characterized in that a tunnel space is formed between the fixed area between the non-stretchable sheet of and the stretchable sheet of the second base material.
  • the invention according to claim 7 of the present application is configured by laminating a non-stretchable nonwoven sheet and a stretchable nonwoven sheet via a fixed area with a thin film hot melt adhesive, and the non-stretchable nonwoven sheet and the stretchable nonwoven sheet A tunnel space is formed between the fixed areas, and the fixed area is a narrow straight line in a direction orthogonal to the longitudinal direction of the composite stretchable member, and is intermittently present in the longitudinal direction of the composite stretchable member.
  • the present invention is an elastic member by fixing the non-stretchable sheet of the first base and the stretchable sheet of the second base by the thin film hot melt adhesive with the pattern distribution by the convex surface of the pattern roll. It has the effect of being able to provide a composite stretchable member in which a tunnel space [bleats (brows)] which is soft and has a good feel and a good touch can be provided without using (thread rubber) and reducing the manufacturing cost. Furthermore, it has the effect of being able to provide a composite stretchable member having a tunnel space with good bondability between the composite stretchable member and the sheet-like member to be stacked.
  • Explanatory drawing explanatory drawing of a tunnel space a figure is sectional drawing, b figure is a perspective view.
  • the expanded view which shows another Example about pattern distribution of the convex part surface of a pattern roll The top view schematic of the manufacturing apparatus of the compound expansion-contraction member which has a tunnel space which shows this invention 2nd Example.
  • Explanatory drawing of the distribution and shape of the tunnel space in the embodiment of pattern distribution shown in FIG. 8 a is a plan view
  • b is a longitudinal sectional view at the center of the plan
  • c is a longitudinal cross section at the side of the plan Figure.
  • a thin film hot melt adhesive is applied to the back surface of the non-stretchable sheet (non-woven fabric) of the first base material in a pattern distribution by the convex surface of the pattern roll.
  • a non-stretchable sheet (non-woven fabric) of a first base material coated with a thin film hot melt adhesive on the back surface in the above step The elastic sheet (nonwoven fabric) of the second base material is passed between the speed reduction drive rolls, and the traveling speed between the pressure-rolling rolls is less than half the traveling speed of the non-elastic sheet (nonwoven fabric) of the first base material.
  • the non-stretchable sheet (non-woven fabric), which is the first base material, and the stretchable sheet (non-woven fabric) of the second base material are pasted together.
  • the elastic sheet (nonwoven fabric) of the second base material has a natural length by progressing through the bonding step and the elastic sheet of the second base material and the lower surface of the non-elastic sheet (nonwoven fabric) of the first base material Between the upper surface of the non-woven fabric and the upper surface of the non-woven fabric, a fixed area is formed by the hot melt adhesive of the pattern distribution of the convex surface of the pattern roll. IV Furthermore, a tunnel space is formed between the fixed areas.
  • the pattern distribution on the surface of the convex portion of the pattern roll in the transfer step I is shaped so as to be intermittent with a narrow straight line in the direction orthogonal to the longitudinal direction of the member.
  • FIGS. 1 to 5 An apparatus for producing a multilayer stretchable member having a tunnel space according to the present invention shown in FIGS. 1 to 5 will be described.
  • a supply device 1 for a non-stretchable sheet of a first base material a transfer device 2 for transferring and applying a thin film hot melt adhesive to a first base material A, and expansion and contraction of a second base material Of the first sheet A and the second sheet B of the first substrate A.
  • seat of a 1st base material is comprised by a pair of upper and lower drive rolls 5 and 5.
  • the transfer device 2 comprises a pattern roll 10 and a rolling roll 6.
  • the decelerating supply device 3 for the elastic sheet B of the second base material includes decelerating drive rolls 7 and 7 and a tension roll 8.
  • the bonding apparatus 4 for bonding the first base and the second base includes rolling rolls 9 and 9.
  • the pair of upper and lower drive rolls 5, 5 of the feeding apparatus 1 of the first base material non-stretchable sheet, and the rolling rolls 9, 9 of the bonding apparatus 4 are synchronously operated via the servo mechanism and substantially the same rotation Drive by number.
  • the pattern roll 10 and the rolling roll 6 of the transfer device 2 are free rolls and correspond to the transfer speed of the first base material A, so that they have the same speed as the rolling rolls 9 and 9 of the bonding device 4.
  • the driving rotational speed of the reduction driving rolls 7 of the reduction supply device 3 is set to 1/2 or less of the rotational speed of the rolling rolls 9 of the bonding device 4. That is, the transfer speed of the second base material B is set to 1/2 or less of the transfer speed of the first base material A.
  • a convex surface 12 and a concave surface 13 are formed on the surface of the pattern roll 10 of the transfer device 2.
  • the thin film hot melt adhesive HM supplied from the application head 11 of the hot melt adhesive supply device is applied to the convex surface 12 of the pattern surface.
  • the pattern distribution by the convex surface 12 of the pattern roll of the transfer device is a narrow straight line in the direction orthogonal to the roll rotation direction.
  • FIG. 2 is a developed view of a roll surface showing an example of a pattern distribution, where a shows the width d of the convex surface 12 0.3 mm, the pitch p 4 mm, and b shows the convex surface 12.
  • the width d is 0.3 mm
  • the pitch p is 7 mm
  • the width c of the convex portion surface 12 is 0.3 mm to 0.5 mm
  • the pitch p is 10 mm.
  • FIG. 3 shows the coated state of the thin film hot melt adhesive HM between the transfer step E1 and the bonding step E2.
  • a thin film hot melt adhesive HM is applied to the lower surface of the first base material A in the range of the area Q in the application pattern of the developed view shown in FIG.
  • FIG. 4 shows the coated state of the thin film hot melt adhesive HM immediately after the bonding step E2.
  • a tunnel space T is formed between the fixed areas QQ.
  • the tunnel space T intermittently exists in a direction orthogonal to the traveling direction of the coated substrate.
  • FIG. 6 shows an embodiment in which the pattern distribution of the pattern roll 1 is divided into a plurality of divisions in which the narrow straight line intervals of the convex surface 12 are different in the direction perpendicular to the roll rotation direction (longitudinal direction in the pattern development view). An example is shown.
  • 10A, 10B and 10C are coating heads
  • 13A, 13B and 13C are hot melt supply devices
  • 14 is a hot melt tank.
  • FIG. 7 shows an embodiment in which a plurality of (6A, 6B, 6C) hot melt adhesive supply devices 10 and pattern rolls 6 are provided side by side, and the intervals of narrow straight lines are made different for each pattern roll 10.
  • FIG. 8 shows a large number of narrow straight lines 12B formed in the inclination direction in addition to the large number of narrow straight lines 12A formed in the direction orthogonal to the roll rotation direction (longitudinal direction in the pattern development view). , 12B ′ are shown.
  • FIG. 9 shows that the base material A on which the coated area Q composed of the thin film hot melt adhesive HM coated with the pattern distribution cloth of FIG. Based on the approach of the fixed area QQ, the distribution of the tunnel space T is shown.
  • the tunnel space includes T1, T2, T3, and T3 '.
  • a change component in the direction orthogonal to the inclination direction acts on the change to the natural length of the base material B.
  • a sheet-like member for example, a body fluid absorption mat, a therapeutic drug solution, and the like laminated on an intermediate product of a composite stretchable member that forms a tunnel space [bleaches] by changing the distribution and shape of the tunnel space T depending on the position of the base material It has the effect of improving the bonding with the coated sheet)).
  • the present invention can reduce the manufacturing cost of the composite stretchable member forming the tunnel space [bleets], and can provide a composite stretchable member that is soft and has a good touch and a good touch, thereby making the composite stretchable member an intermediate product. It contributes to the development of manufacturing industries such as body fluid absorption products such as disposable diapers.

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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)
  • Absorbent Articles And Supports Therefor (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention aborde les problèmes de réduction de la quantité utilisée d'un adhésif thermofusible pour l'assemblage, d'obtention une diminution des coûts de produit par distribution avec un élément élastique (caoutchouc de type fil), et d'amélioration de la fonction en tant qu'espaces de tunnel (plis (replis)) lors de l'assemblage de deux feuilles (une feuille non étirable d'un premier substrat et une feuille étirable d'un deuxième substrat). Un procédé de production d'un élément étirable composite comprend : une étape de transfert (I) pour appliquer un adhésif thermofusible à couche mince (HM) sur la surface arrière de la feuille non étirable du premier substrat (A) au moyen d'une distribution de motif depuis les surfaces de saillies (12) d'un rouleau à motif (1) ; et une étape de liaison (II) pour revêtir le premier substrat et la feuille étirable du deuxième substrat (B), l'adhésif thermofusible à film mince ayant été appliqué sur ledit premier substrat sur la surface arrière de celui-ci par le procédé mentionné ci-dessus, et ledit deuxième substrat étant alimenté à une vitesse de déplacement qui est 1/2 ou moins de celle du premier substrat, la distribution de positions d'adhérence et la forme de section transversale des espaces de tunnel étant définies par la distribution de motif à partir des surfaces des saillies du rouleau de motif par la configuration d'une feuille de tissu non-tissé étirable sur la longueur naturelle de celle-ci.
PCT/JP2017/022762 2017-02-24 2017-06-07 Procédé et dispositif de production d'un élément étirable composite ayant des espaces de tunnel, et élément étirable composite ayant des espaces de tunnel WO2018154803A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2017550642A JP6467522B2 (ja) 2017-02-24 2017-06-07 トンネル空間を有する複合伸縮部材の製造方法、製造装置およびトンネル空間を有する複合伸縮部材

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017049196 2017-02-24
JP2017-49196 2017-02-24

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WO2018154803A1 true WO2018154803A1 (fr) 2018-08-30

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05228177A (ja) * 1992-02-24 1993-09-07 Nippon Kiyuushiyuutai Gijutsu Kenkyusho:Kk 新規な弾性複合体を伸縮部に備えたパンツ状生理用品
JP2003025471A (ja) * 2001-07-17 2003-01-29 Uni Charm Corp 透湿性を有する複合シートおよび前記複合シートを用いた吸収性物品
JP2005253731A (ja) * 2004-03-12 2005-09-22 Uni Charm Corp 使い捨ての着用物品
JP5828469B1 (ja) * 2014-05-17 2015-12-09 株式会社サンツール ホットメルト接着剤のロール転写塗布方法および塗布装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3579905B2 (ja) * 1992-12-11 2004-10-20 株式会社日本吸収体技術研究所 オムツ
JP4934835B2 (ja) * 2007-04-10 2012-05-23 株式会社瑞光 積層伸縮シートの製造方法
JP6709550B2 (ja) * 2015-03-30 2020-06-17 大王製紙株式会社 吸収性物品及びその製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05228177A (ja) * 1992-02-24 1993-09-07 Nippon Kiyuushiyuutai Gijutsu Kenkyusho:Kk 新規な弾性複合体を伸縮部に備えたパンツ状生理用品
JP2003025471A (ja) * 2001-07-17 2003-01-29 Uni Charm Corp 透湿性を有する複合シートおよび前記複合シートを用いた吸収性物品
JP2005253731A (ja) * 2004-03-12 2005-09-22 Uni Charm Corp 使い捨ての着用物品
JP5828469B1 (ja) * 2014-05-17 2015-12-09 株式会社サンツール ホットメルト接着剤のロール転写塗布方法および塗布装置

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JP6467522B2 (ja) 2019-02-13

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