WO1991015367A1 - Installation de thermocollage de tampons absorbants sur des articles hygieniques ayant pour fonction l'absorption des fluides corporels - Google Patents

Installation de thermocollage de tampons absorbants sur des articles hygieniques ayant pour fonction l'absorption des fluides corporels Download PDF

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Publication number
WO1991015367A1
WO1991015367A1 PCT/EP1991/000549 EP9100549W WO9115367A1 WO 1991015367 A1 WO1991015367 A1 WO 1991015367A1 EP 9100549 W EP9100549 W EP 9100549W WO 9115367 A1 WO9115367 A1 WO 9115367A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
heating cylinder
appliance
absorbent pads
deflecting
Prior art date
Application number
PCT/EP1991/000549
Other languages
English (en)
Inventor
Guido Rossi
Original Assignee
Royce Ag
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 Royce Ag filed Critical Royce Ag
Publication of WO1991015367A1 publication Critical patent/WO1991015367A1/fr

Links

Classifications

    • 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
    • B32B37/144—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers using layers with different mechanical or chemical conditions or properties, e.g. layers with different thermal shrinkage, layers under tension during bonding
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
    • A61F13/15731—Treating webs, e.g. for giving them a fibrelike appearance, e.g. by embossing
    • 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
    • B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
    • 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
    • B32B2555/00—Personal care
    • B32B2555/02—Diapers or napkins

Definitions

  • the invention relates to an appliance for the thermal bonding of absorbent pads according to the precharacterising clause of Patent Claim 1.
  • thermobonding appliance of this type a so-called thermobonding apparatus, which can be inserted into an already existing production system working continuously and which is intended for absorbent pads treated with an absorbent agent and employs a hot-air throughflow principle is known.
  • the alternating air throughflow heats, on two perforated drums, both sides of the absorbent pads joined in sheet form and, if appropriate, covered on both sides with covering sheets.
  • the cellulose/synthetic pulp mixture is thermally bonded, a superabsorber being fixed at predetermined points of the absorbent pads.
  • An appliance of this type is not suitable for the thermal bonding of individual freely lying absorbent pads conveyed at a distance behind and/or next to one another or of those which are covered with a covering sheet on one side only.
  • DE-B-1,296,363 for example, relates to a process for the adhesive bonding of a paper sheet to a flexible, tough, transparent plastic film.
  • one or more paper sheets are coated with a film of this type either on one side or on both sides, specifically with the use of a special adhesive layer under the effect of heat.
  • the sheets to be coated run through between a guide roller with a relatively larger diameter, so that the thermoplastic adhesive covering of the plastic film covered with radiation-absorbing separating sheets is subjected to less bending stress. and a conveyor band.
  • An intensive radiation energy for example from infrared radiation, is brought to bear from the side of the radiation-absorbing sheet for the purpose of activating the adhesive.
  • No heating and/or calendering rollers are used, and there is also no filamentary laying-down device for achieving an improved absorbency and further transport of the absorbent pads.
  • the object on which the present invention is based is, therefore, to provide a thermal bonding appliance, in which not only shaped absorbent pads joined in sheet form and covered on both sides, but also especially individual freely lying absorbent pads equipped with a covering sheet on one side can be thermally bonded, even at very high run-through speeds, and a fault-free introduction and smooth run-through are guaranteed, even where multilayer absorbent pads are concerned, whilst at the same time a possibly necessary calendering, smoothing and/or embossing roller pressing appliance will be substantially simplified.
  • the individual absorbent pads laid down freely between the pressure band and heating cylinder or additionally equipped on one side or both sides with covering sheets, preferably nonwoven sheets, can be bonded in a similar way to the bonding appliances according to WO/13278, in that the laying-down device is put out of operation, the press roller is lifted off from the heating cylinder and the absorbent pads are transported to the next production station via the defecting roller preceding the press roller.
  • a laying-down device formed from endlessly rotating filamentary material, preferably a wire rope guarantees a perfect introduction and fault-free run-through of the absorbent pads to be bonded, even at very high working speeds.
  • the absorbent pads to be bonded are taken up between the endless wire-rope laying-down device guided on the heating cylinder and the pressure band, the groove-shaped impression of the laying-down device on the side of the absorbent pads facing the heating cylinder affording an improved absorbency and also making the further transport of the absorbent pads easier, especially where absorbent pads of multilayer construction are concerned.
  • the groove-shaped impression of the laying-down device extends in the longitudinal direction of the absorbent pads, for example as regards a napkin it becomes appreciably more difficult for body fluid to escape laterally.
  • the superabsorber already introduced into the absorbent pads is retained between two respective depressions (grooves) of the laying-down device which are impressed at a distance from one another, so that an accumulation of the superabsorber which blocks gel formation, so-called “block gelling”, is largely prevented.
  • the heatable press roller is adjustable under pressure relative to the heating cylinder in the region free of the pressure band and together with the heating cylinder forms a pair of calendering, smoothing or embossing rollers. Because there is no need for an additional pressing appliance, in addition to a saving of space the heat losses are reduced substantially.
  • the press roller is equipped over the sheet width with spacer grooves for the filamentary material, so that, for example, the wire-rope laying-down device is aligned with the surface of the press roller.
  • An exemplary embodiment of the arrangement according to the invention of the thermal bonding appliance combined with a pressing appliance is illustrated in the drawing.
  • Figure 1 shows a side view from the right of a bonding and pressing appliance.
  • Figure 2 shows a side view from the left of the appliance according to Figure 1 with the corresponding drives
  • Figure 3 shows a diagrammatic perspective representation according to Figure 1 with the laying-down device.
  • the thermal bonding appliance 10 consists of a double-walled heating cylinder 11, in which, for example, hot oil circulates as a heating medium. Looped partially round the lower half of the heating cylinder 11 is a pressure band A which is guided via deflecting rollers 17,16, a tensionable deflecting roller 15, further deflecting rollers 14,13 and a deflecting heating roller 12 back to the heating cylinder 11.
  • the deflecting roller 14 and the tensionable deflecting roller 15 are mounted on a tensioning frame 31 of a pressure-band control 30.
  • the tensioning frame 31 is supported movably on a bearing point 36 arranged in the longitudinal direction.
  • a band control 34 By means of a band control 34, the tension and parallel run of the pressure band A are monitored and deviations are compensated via a pulse transmitter 35 and parallel regulating devices 32(32') and band-tension regulating devices 33(33') of the tensioning frame 31.
  • the thermal bonding appliance 10 is combined with a calendering, smoothing and/or embossing roller pressing appliance
  • a heatable press roller 21 being adjustable relative to the heating cylinder 11 by means of a nip setting 27.
  • the press roller 21 is fastened to one end of a two-armed lever 23 by means of a mounting 22, and a piston/cylinder unit 25,26 arranged on the frame 59 by means of a bracket 28 acts on the end of the two-armed lever 23 opposite the press roller 21.
  • the press roller 21 is lifted off from the heating cylinder 11 as a result of the actuation of the piston/ cylinder unit 25,26, so that the press roller 21 merely performs the function of a deflecting roller for a filamentary laying-down material, preferably a wire-rope laying-down device, as described further below.
  • a laying-down device 40 which pays out an endless filamentary material and which lays the endlessly connected material, such as filament yarn, endless rope, continuous ribbon and the like, preferably wire rope 44, into spacer grooves 45.
  • the laying-down device 40 consists of a guide roller 41 and of a guide/tension roller 42 which are both grooved and the latter of which is connected to a piston rod 47 of a pneumatic piston/cylinder unit (46,47) in order to tension said laying-down device 40.
  • the endless wire rope 44 is guided via the spacer grooves 45 of the guide/tension roller 42, the likewise grooved guide roller 41 and the deflecting/heating roller 12 directly via the heating cylinder 11 and the press roller 21 back to the guide/tension roller 42, so that the non-bonded absorbent pads F are taken up between the pressure band A and the wire-rope laying-down device 44 guided via the heating cylinder 11, whilst the absorbent pads F' thermally bonded or additionally also calendered, smoothed or embossed by the press roller 21 are transported to the following production station via the press roller 21.
  • the pattern 44 of the wire laying-down device (longitudinally groove-shaped depressions) impressed in the surface of the bonded absorbent pad F' achieves an improved absorbency and, especially where multilayer absorbent pads are concerned, a cohesion, advantageous for further processing, of the thermally bonded absorbent pads F', if appropriate also pressed by the press roller 21.
  • a comb-shaped separating strip (not shown) is arranged immediately after the press roller 21 in the direction of run.
  • the heating cylinder 11 is cleaned continuously by means of a cleaning brush 51 arranged in a box 52 and belonging to a brush device 50, and the brush 51 can be raised and lowered vertically relative to the heating cylinder 11 in guides 53 via a lifting device 54.
  • a suction fan 58 with a filter (not shown) known per se is arranged above the thermal bonding appliance 10 combined with the pressing appliance 20.
  • the filter consists of unrolling and rolling-up devices arranged on both sides of the appliance 10 for a textile filter web, the filter web being unrolled from one side and rolled up on the other side and air cleaned in this way being fed back into the air circuit of the appliance.
  • the entire thermal bonding appliance 10 combined with the pressing appliance 20 is encased in a thermal insulation 57 partially indicated, in order to keep heat losses low.
  • the drive 60 of the thermal bonding appliance 10 and of the pressing appliance 20 takes place by means of a flat belt, preferably made of plastic, via a driving roller 61 coupled to a drive unit, preferably an electrical drive unit, a tensioning/deflecting roller 62, a deflecting roller 63, a belt pulley 64 and a belt pulley 66 of the heating cylinder 11, a belt pulley 65 driving the press roller 21 synchronously from the belt pulley 64 by means of a toothed belt D.
  • the brush 51 of the cleaning device 50 is likewise driven by an electric motor 55 via a multiple round belt E.
  • V-belts and/or toothed belts could also be used instead of the round belts E and the flat belt C.
  • the combined thermal bonding and pressing appliance 10,20 is not restricted to absorbent pads for articles of hygiene; thus, absorbent pads containing superabsorber material covered on both sides could also be produced as a protective device against the effects of water.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Epidemiology (AREA)
  • Biomedical Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

L'installation de thermocollage décrite (10), qui est combinée à une installation de rouleaux presseurs de calandrage, de lissage et/ou de gauffrage (20) et qui est destinée à assurer le traitement de tampons absorbants sur des articles hygiéniques, se compose d'une bande de pression (A) qui effectue un mouvement de rotation sans fin en passant par un cylindre chauffant (11) et des rouleaux (17, 16, 15, 14, 13, 12) avec retour au cylindre chauffant (11) et qui entoure partiellement de façon réglable le pourtour du cylindre chauffant. Les tampons absorbants, qui sont disposés librement séparés les uns des autres ou joints pour former une feuille et qui sont chacun couverts sur une face et/ou sur les deux faces d'une feuille de revêtement, sont guidés entre la surface circonférentielle du cylindre chauffant (11) et la bande de pression (A). Pour assurer une introduction parfaite et une avance non défectueuse des tampons absorbants à coller, même à des vitesses de travail très élevées, on prévoit un dispositif d'étendage (40) pour un matériau filamenteux (44) effectuant un mouvement de ro tation sans fin, tel que de préférence un fil de toile, étendu à une distance réciproque sur la largeur de la feuille, les tampons absorbants (F, F') étant principalement guidés entre le dispositif (40) d'étendage du fil de toile et la bande de pression (A). Un rouleau presseur (21) faisant partie de l'installation de rouleaux presseurs de calandrage, de lissage et de gaufrage (20), coopèrent avec le cylindre chauffant (11) à l'extérieur de la région circonférentielle circulaire de la bande de pression, de façon à ce que le cylindre chauffant (11) serve en plus de rouleau de calandrage.
PCT/EP1991/000549 1990-04-01 1991-03-21 Installation de thermocollage de tampons absorbants sur des articles hygieniques ayant pour fonction l'absorption des fluides corporels WO1991015367A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH105990 1990-04-01
CH1059/90-1 1990-04-01

Publications (1)

Publication Number Publication Date
WO1991015367A1 true WO1991015367A1 (fr) 1991-10-17

Family

ID=4201488

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1991/000549 WO1991015367A1 (fr) 1990-04-01 1991-03-21 Installation de thermocollage de tampons absorbants sur des articles hygieniques ayant pour fonction l'absorption des fluides corporels

Country Status (5)

Country Link
EP (1) EP0474818A1 (fr)
JP (1) JPH04506492A (fr)
AU (1) AU7540691A (fr)
CA (1) CA2055597A1 (fr)
WO (1) WO1991015367A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005065919A1 (fr) * 2003-12-30 2005-07-21 Kimberly-Clark Worldwide, Inc. Appareil et procede de deformation de materiau en feuille
KR100679697B1 (ko) 2006-01-11 2007-02-06 전우진 차량용 내장재 원단 가공용 엠보싱캘린더

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09132847A (ja) * 1995-11-07 1997-05-20 Unitika Ltd 複合不織布およびその製造方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB643078A (en) * 1947-07-29 1950-09-15 Int Cellucotton Products Improvements in a method of cutting pads and rotary apparatus therefor
FR1390495A (fr) * 1963-02-23 1965-02-26 Anne Co Ltd Matière absorbante pour serviettes périodiques et son procédé de fabrication
DE1296363B (de) * 1960-07-28 1969-05-29 Minnesota Mining & Mfg Verfahren zum Verkleben eines Papierbogens mit einem biegsamen, zaehen und durchsichtigen Kunststoffilm
DE2046184A1 (fr) * 1970-04-14 1972-03-23

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB643078A (en) * 1947-07-29 1950-09-15 Int Cellucotton Products Improvements in a method of cutting pads and rotary apparatus therefor
DE1296363B (de) * 1960-07-28 1969-05-29 Minnesota Mining & Mfg Verfahren zum Verkleben eines Papierbogens mit einem biegsamen, zaehen und durchsichtigen Kunststoffilm
FR1390495A (fr) * 1963-02-23 1965-02-26 Anne Co Ltd Matière absorbante pour serviettes périodiques et son procédé de fabrication
DE2046184A1 (fr) * 1970-04-14 1972-03-23

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005065919A1 (fr) * 2003-12-30 2005-07-21 Kimberly-Clark Worldwide, Inc. Appareil et procede de deformation de materiau en feuille
US7198742B2 (en) 2003-12-30 2007-04-03 Kimberly-Clark Worldwide, Inc. Apparatus and method for deforming sheet material
KR100679697B1 (ko) 2006-01-11 2007-02-06 전우진 차량용 내장재 원단 가공용 엠보싱캘린더

Also Published As

Publication number Publication date
EP0474818A1 (fr) 1992-03-18
AU7540691A (en) 1991-10-30
JPH04506492A (ja) 1992-11-12
CA2055597A1 (fr) 1991-10-02

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