EP0380781A2 - Dispositif pour l'application de colle sur des fils élastique - Google Patents

Dispositif pour l'application de colle sur des fils élastique Download PDF

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Publication number
EP0380781A2
EP0380781A2 EP89122393A EP89122393A EP0380781A2 EP 0380781 A2 EP0380781 A2 EP 0380781A2 EP 89122393 A EP89122393 A EP 89122393A EP 89122393 A EP89122393 A EP 89122393A EP 0380781 A2 EP0380781 A2 EP 0380781A2
Authority
EP
European Patent Office
Prior art keywords
dye
threads
adhesive
application
application head
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP89122393A
Other languages
German (de)
English (en)
Other versions
EP0380781A3 (fr
Inventor
Henning J. Claasen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nordson Corp
Original Assignee
Nordson Corp
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 Nordson Corp filed Critical Nordson Corp
Publication of EP0380781A2 publication Critical patent/EP0380781A2/fr
Publication of EP0380781A3 publication Critical patent/EP0380781A3/fr
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
    • B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
    • B05C3/12—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length
    • B05C3/132—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length supported on conveying means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0241—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to elongated work, e.g. wires, cables, tubes

Definitions

  • the invention relates to a device for applying an adhesive to elastic threads of the type specified in the preamble of claim 1.
  • Rippled, sheet-like structures when heated are used in particular as elastic bundles for disposable clothing, for example for nuclear facilities, but also for elastic bandages, bandages and hygiene articles, such as diapers, in order to achieve tight, but elastically deformable closures.
  • films or foils are made from an inelastic, thermoplastic polymer, in particular on the basis of ethylene vinyl acetate (EVA) copolymers, which are laminated onto the pre-stretched elastomer threads from both sides.
  • EVA ethylene vinyl acetate
  • DE-GM 88 06 965 discloses a device for producing such a flat structure, in which a melt adhesive layer is at least partially applied to the unwound substrate or to the elastic threads by means of a melting device.
  • the associated application head can be provided with a melt nozzle or a spray nozzle for applying the hot melt adhesive.
  • DE-PS 37 07 349 describes a method for permanently connecting stretchable thread-like or ribbon-like elements on a flat substrate, in which the thread-like or ribbon-like element arranged or fixed on the flat substrate is covered with a sprayed hot-melt adhesive or is sprayed; the hot-melt adhesive also detects the neighboring areas of the thread-like or ribbon-like element, that is to say the adjacent substrate areas, so that the hot-melt adhesive consumption becomes relatively high, since hot-melt adhesive is also located on the areas between the threads, which are not in themselves required for the bonding .
  • the applicator head has guide grooves for the individual threads. At least one outlet opening for the adhesive opens into each guide groove.
  • the elastic threads can be guided and positioned very precisely at the time the adhesive is applied, so that the adhesive is applied specifically to the threads and not to the surface areas between the individual threads.
  • the threads are provided with the adhesive evenly over their entire surface, as is necessary for the required, highly stressable connection between the threads and the corresponding substrates for the production of hygiene articles, for example diapers.
  • the invention is therefore based on the object of providing a device for applying a hot melt adhesive to elastic threads of the type specified, in which the disadvantages mentioned above do not occur.
  • an application device is to be proposed which, in comparison with the previously customary embodiments, enables relevant adhesive savings.
  • the advantages achieved by the invention are based on the fact that the elastic threads are first provided with a suitable paint application continuously or intermittently and then the hot melt adhesive is applied.
  • the coloring that is to say a specific dye, can be changed or changed as desired, without the hot melt adhesive application device being touched thereby.
  • thermoplastic material without adhesive properties, for example based on so-called "microwaxes", which contains no expensive resins, can be used as the paint. This material becomes liquid when heated and can therefore be applied to the threads in the desired, relatively small amounts.
  • the order quantity for the relatively expensive colored material can be reduced by about 50%.
  • the overall costs are comparatively low, in particular when the hot melt adhesive is applied by a spraying method, since only extremely small amounts of the undyed adhesive are required for the spraying.
  • Another advantage of this applicator is that existing elastic thread gluing devices, for example in diaper machines, do not have to be laboriously replaced, but the previous diaper machines have to be used further and only have to be supplemented by the coloring device for the threads.
  • Both the coloring of the elastic threads with a suitable dye and the application of the adhesive and the subsequent gluing to the substrate can be carried out continuously.
  • great importance is attached to the fact that the coloring is carried out only in the area of the bond, since the cut off, non-bonded ends of the elastic threads are virtually invisible without coloring.
  • This advantage arises in particular in comparison with the previously used, pre-dyed elastic threads, which are generally dyed over their entire length, so that their cut off, non-glued ends remain clearly visible.
  • the manufacturer can buy and process the same white elastic thread for all diaper types, so that essentials also with regard to purchasing, warehousing and production Advantages.
  • the elastic threads which are dyed intermittently and then provided with the hot melt adhesive, act as real threads and not as dyed broad blue traces due to the economical application on the finished product, for example a diaper, so that this also results in an aesthetic improvement.
  • the application device for the dye can essentially have the structure as found in utility model application G 88 15 242.1 emerges, namely with guide grooves for the individual threads and with at least one outlet opening for the dye in each guide groove.
  • the hot melt adhesive can be applied practically by any method, e.g. B. spray, roller application, slot nozzle application, but also with an application head with guide grooves for the individual threads and with an outlet opening for the hot melt adhesive in each guide groove.
  • the device shown in FIG. 1, generally indicated by the reference numeral 10, for producing a device that heats up curling fabric, as is used for example for hygiene articles, has a rotatable roller 12 which, via a deflection roller 13, has a polyethylene web 14 in the direction of a first arrow 15, a nonwoven web 16 in the direction of a second arrow 17 and pre-stretched elastic threads 18 fed in the direction of a third arrow 19 and thereby connected to each other.
  • an application head 20 Seen in the direction of transport of the polyethylene web 14 in front of the roller 12 is an application head 20, from which a liquefied and thus flowable dye from a dye source (not shown), namely a suitable thermoplastic material without adhesive properties, e.g. B. is supplied on the basis of so-called "microwaxes".
  • a dye source not shown
  • a suitable thermoplastic material without adhesive properties e.g. B.
  • the application head 20 is provided on its underside with guide grooves for the threads 18.
  • These guide grooves are somewhat larger in cross section than the threads 18, so that the threads 18 are largely received in the guide grooves and only protrude slightly beyond the underside of the application head 20.
  • the guide grooves in the underside of the application head can have 20 different shapes; two guide grooves 22a with a semicircular cross section are shown in FIG. 2, two guide grooves 22b with a rectangular cross section are shown in FIG. 3, and two guide grooves 22c with a triangular cross section are shown in FIG.
  • FIGS. 2 to 4 also show the outlet slots 24a (FIG. 2), 24b (FIG. 3) and 24c (FIG. 4) and several Feed openings 26a (FIG. 2), 26b (FIG. 3) and 26c (FIG. 4) for the dye are indicated in each guide groove 22a, 22b and 22c.
  • the threads 18 run individually through the corresponding guide grooves 22a (FIG. 2), 22b (FIG. 3) or 22c (FIG. 4), so that the threads 18 are enveloped uniformly from all sides by the dye 28 indicated by the hatched area the slots 24a, 24b and 24c and the openings 26a, 26b and 26c emerges. Each thread 18 is therefore embedded in a dye tube, which forms between the guide groove and the polyethylene web 14.
  • the dye supply is clocked, so that only short pieces of thread are provided with the dye, as can be seen in FIG. 1, where the individual dye regions on the threads 18 are indicated by the reference symbols 30.
  • the threads coated with the dye 28 are brought into contact with the polyethylene web 14 on the deflecting roller 13 and are provided with the hot melt adhesive in this area approximately by means of an application device 31.
  • this application device is shown as a spray device; However, other application techniques are also possible, namely roller application, slot nozzle application and the like.
  • the hot-melt adhesive is also applied intermittently, synchronized with the dye application, i.e. that is, the regions 30 of the elastic threads which are provided with the dye are also coated with the hot-melt adhesive, as indicated in FIG. 1 by the thread regions 32.
  • the threads 18 coated with the dye 28 and the hot-melt adhesive on the polyethylene web 14 are fed together to the roller 12, where the nonwoven web 16 is laminated onto the top of the polyethylene web 14; this means that they are with the Dye 28 and the elastic threads 18 provided with the adhesive between the nonwoven web 16 and the polyethylene web 14.
  • FIG. 5 shows the two elastic threads 18, the polyethylene web 14, the nonwoven web 16 and the dye / adhesive layer 29, which the threads 18 with the two webs 14, 16 connects.
  • the threads 18 in semicircular or rectangular guide grooves have a relatively large amount of play, so that they can be shifted by the hydraulic effect of the dye in the guide grooves and thus coated unevenly.
  • FIG. 4 A preferred embodiment is therefore shown in FIG. 4, namely guide grooves 22 c, which in cross section have the shape of an isosceles, in particular equilateral triangle.
  • the feed openings 26 c for the dye are located at the three corners of the triangle in order to ensure a uniform coating of the elastic threads on their entire surface.
  • an application device 20 can also be used to coat the threads with the hot melt adhesive.
  • the distance between the application head 20 for the dye and the application head 31 for the hot melt adhesive should be a maximum of 500 mm, in particular a maximum of 300 mm. Particularly good results were achieved when this distance was approximately 100 mm. Because on the corresponding conveyor line the dye applied by the application device 20 has reached such a consistency that there is now a particularly good connection with the adhesive. At the same time, the installation or integration of the application device 20 into a stationary machine presents no problems if a distance in this area is selected.

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  • Absorbent Articles And Supports Therefor (AREA)
  • Coating Apparatus (AREA)
EP19890122393 1989-02-02 1989-12-05 Dispositif pour l'application de colle sur des fils élastique Withdrawn EP0380781A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8901172U 1989-02-02
DE8901172U DE8901172U1 (de) 1989-02-02 1989-02-02 Vorrichtung zum Auftragen eines Klebestoffes auf elastische Fäden

Publications (2)

Publication Number Publication Date
EP0380781A2 true EP0380781A2 (fr) 1990-08-08
EP0380781A3 EP0380781A3 (fr) 1991-04-24

Family

ID=6835631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890122393 Withdrawn EP0380781A3 (fr) 1989-02-02 1989-12-05 Dispositif pour l'application de colle sur des fils élastique

Country Status (2)

Country Link
EP (1) EP0380781A3 (fr)
DE (1) DE8901172U1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5683752A (en) * 1992-12-16 1997-11-04 Kimberly-Clark Worldwide, Inc. Apparatus and methods for selectively controlling a spray of liquid to form a distinct pattern
EP1440736A2 (fr) * 2003-01-22 2004-07-28 Nordson Corporation Module, buse et procédé de distribution de matériaux liquides suivant un motif commandé
EP1497043A1 (fr) * 2002-04-12 2005-01-19 Nordson Corporation Module, gicleur et procede pour la distribution commandee de modeles de substance liquide
US7923505B2 (en) 2002-07-02 2011-04-12 Kimberly-Clark Worldwide, Inc. High-viscosity elastomeric adhesive composition
WO2014085064A1 (fr) * 2012-11-27 2014-06-05 The Procter & Gamble Company Procédés et appareil de fabrication de stratifiés élastiques
US9034425B2 (en) 2012-04-11 2015-05-19 Nordson Corporation Method and apparatus for applying adhesive on an elastic strand in a personal disposable hygiene product
US9265672B2 (en) 2012-11-27 2016-02-23 The Procter & Gamble Company Methods and apparatus for applying adhesives in patterns to an advancing substrate
US9295590B2 (en) 2012-11-27 2016-03-29 The Procter & Gamble Company Method and apparatus for applying an elastic material to a moving substrate in a curved path
US9682392B2 (en) 2012-04-11 2017-06-20 Nordson Corporation Method for applying varying amounts or types of adhesive on an elastic strand

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6037009A (en) 1995-04-14 2000-03-14 Kimberly-Clark Worldwide, Inc. Method for spraying adhesive
US5618347A (en) 1995-04-14 1997-04-08 Kimberly-Clark Corporation Apparatus for spraying adhesive
US7601657B2 (en) 2003-12-31 2009-10-13 Kimberly-Clark Worldwide, Inc. Single sided stretch bonded laminates, and methods of making same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0115286A1 (fr) * 1983-01-19 1984-08-08 BOUSSAC SAINT FRERES B.S.F. Société anonyme dite: Procédé de fabrication de couches-culottes à jeter et couches-culottes obtenues

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0115286A1 (fr) * 1983-01-19 1984-08-08 BOUSSAC SAINT FRERES B.S.F. Société anonyme dite: Procédé de fabrication de couches-culottes à jeter et couches-culottes obtenues

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5683752A (en) * 1992-12-16 1997-11-04 Kimberly-Clark Worldwide, Inc. Apparatus and methods for selectively controlling a spray of liquid to form a distinct pattern
EP2253386A1 (fr) * 2002-04-12 2010-11-24 Nordson Corporation Module, gicleur et procède pour la distribution commandée d'échantillons de substance liquide
EP1497043A4 (fr) * 2002-04-12 2007-03-21 Nordson Corp Module, gicleur et procede pour la distribution commandee de modeles de substance liquide
EP2255887A1 (fr) * 2002-04-12 2010-12-01 Nordson Corporation Module, gicleur et procédé pour la distribution commandée d'échantillons de substance liquide
EP2255888A1 (fr) * 2002-04-12 2010-12-01 Nordson Corporation Module, gicleur et procédé pour la distribution commandée d'échantillons de substance liquide
US8800477B2 (en) 2002-04-12 2014-08-12 Nordson Corporation Module, nozzle and method for dispensing controlled patterns of liquid material
EP2110183A1 (fr) * 2002-04-12 2009-10-21 Nordson Corporation Module, gicleur et procédé pour la distribution commandée d'échantillons de substance liquide
US7647885B2 (en) 2002-04-12 2010-01-19 Nordson Corporation Module, nozzle and method for dispensing controlled patterns of liquid material
EP1497043A1 (fr) * 2002-04-12 2005-01-19 Nordson Corporation Module, gicleur et procede pour la distribution commandee de modeles de substance liquide
US9855583B2 (en) 2002-04-12 2018-01-02 Nordson Corporation Method for dispensing controlled patterns of liquid material
US7923505B2 (en) 2002-07-02 2011-04-12 Kimberly-Clark Worldwide, Inc. High-viscosity elastomeric adhesive composition
EP1440736A3 (fr) * 2003-01-22 2007-03-28 Nordson Corporation Module, buse et procédé de distribution de matériaux liquides suivant un motif commandé
EP1440736A2 (fr) * 2003-01-22 2004-07-28 Nordson Corporation Module, buse et procédé de distribution de matériaux liquides suivant un motif commandé
US7578882B2 (en) 2003-01-22 2009-08-25 Nordson Corporation Module, nozzle and method for dispensing controlled patterns of liquid material
US9682392B2 (en) 2012-04-11 2017-06-20 Nordson Corporation Method for applying varying amounts or types of adhesive on an elastic strand
US9034425B2 (en) 2012-04-11 2015-05-19 Nordson Corporation Method and apparatus for applying adhesive on an elastic strand in a personal disposable hygiene product
US9067394B2 (en) 2012-04-11 2015-06-30 Nordson Corporation Method for applying adhesive on an elastic strand in assembly of a personal disposable hygiene product
US9962298B2 (en) 2012-04-11 2018-05-08 Nordson Corporation Dispensing apparatus for applying adhesive on an elastic strand in a personal disposable hygiene product
US9907705B2 (en) 2012-04-11 2018-03-06 Nordson Corporation Dispensing apparatus for applying adhesive on an elastic strand in assembly of a personal disposable hygiene product
WO2014085064A1 (fr) * 2012-11-27 2014-06-05 The Procter & Gamble Company Procédés et appareil de fabrication de stratifiés élastiques
US9730839B2 (en) 2012-11-27 2017-08-15 The Procter & Gamble Company Method and apparatus for applying an elastic material to a moving substrate in a curved path
US9808827B2 (en) 2012-11-27 2017-11-07 The Procter & Gamble Company Methods and apparatus for applying adhesives in patterns to an advancing substrate
US9295590B2 (en) 2012-11-27 2016-03-29 The Procter & Gamble Company Method and apparatus for applying an elastic material to a moving substrate in a curved path
US9265672B2 (en) 2012-11-27 2016-02-23 The Procter & Gamble Company Methods and apparatus for applying adhesives in patterns to an advancing substrate
US9248054B2 (en) 2012-11-27 2016-02-02 The Procter & Gamble Company Methods and apparatus for making elastic laminates
US10729593B2 (en) 2012-11-27 2020-08-04 The Procter & Gamble Company Methods and apparatus for making elastic laminates

Also Published As

Publication number Publication date
DE8901172U1 (de) 1990-06-07
EP0380781A3 (fr) 1991-04-24

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