WO2013139810A1 - Dispositif et procédé pour munir un objet d'un adhésif thermocollant par pulvérisation - Google Patents

Dispositif et procédé pour munir un objet d'un adhésif thermocollant par pulvérisation Download PDF

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Publication number
WO2013139810A1
WO2013139810A1 PCT/EP2013/055731 EP2013055731W WO2013139810A1 WO 2013139810 A1 WO2013139810 A1 WO 2013139810A1 EP 2013055731 W EP2013055731 W EP 2013055731W WO 2013139810 A1 WO2013139810 A1 WO 2013139810A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
nozzles
melt
temperature
hot
Prior art date
Application number
PCT/EP2013/055731
Other languages
German (de)
English (en)
Inventor
Yu Han
Fabian Kempe
Wilhelm Istemaas
Thomas Walther
Original Assignee
Fmp Technology Gmbh Fluid Measurements & Projects
Baumer Hhs Gmbh
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
Priority to DE102012204426A priority Critical patent/DE102012204426A1/de
Application filed by Fmp Technology Gmbh Fluid Measurements & Projects, Baumer Hhs Gmbh filed Critical Fmp Technology Gmbh Fluid Measurements & Projects
Priority to EP13710423.8A priority patent/EP2827999B1/fr
Priority to PCT/EP2013/055731 priority patent/WO2013139810A1/fr
Publication of WO2013139810A1 publication Critical patent/WO2013139810A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/166—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the material to be sprayed being heated in a container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/3073—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a deflector acting as a valve in co-operation with the outlet orifice
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/12—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
    • B05B12/126—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus responsive to target velocity, e.g. to relative velocity between spray apparatus and target
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/1693—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed with means for heating the material to be sprayed or an atomizing fluid in a supply hose or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/24—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means incorporating means for heating the liquid or other fluent material, e.g. electrically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/02—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery
    • B05B12/06—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery for effecting pulsating flow

Definitions

  • the invention relates to an apparatus and a method for spray coating an article with a hot melt adhesive.
  • a device for spray coating an article with a hot melt adhesive comprises a nozzle through which a melt jet is ejected under pressure.
  • the nozzle is surrounded by an annular nozzle in the region of its nozzle opening, through which compressed air is ejected.
  • the effect of the compressed air creates a ring or spiral spray.
  • a ring or spiral spray is unsuitable.
  • the object of the invention is to eliminate the disadvantages of the prior art. It should in particular a forward direction and a method are provided which allow precise application of a hot melt adhesive to an object having ⁇ means of spraying. According to another object of the invention The intention is to improve the strength of an adhesive bond.
  • a device for spray-coating an article with a hot-melt adhesive with a first nozzle and a second nozzle, wherein the first and second nozzles are arranged such that a first melt jet emerging from the first nozzle and one out of the first nozzle second nozzle emerging second melt jet at an acute angle meet in a meeting point, so that forms a spray fan downstream of the meeting point, and wherein a temperature holding device for holding the first and the second nozzle at a predetermined target temperature in the range of 80 ° C to 250 ° C. is provided.
  • a hot melt adhesive are arranged in the form of a flat spray fan at a point downstream of the fail ⁇ object.
  • the acute angle is 10 ° to 80 °, preferably 20 ° to 60 °.
  • the first and second melt jet are still advantageous way ⁇ enough, with respect to a meeting point of the two-melting, zestrahlen arranged symmetrically, ie the first and the second melt jet have up to the meeting point in Wesentli ⁇ chen the same length. They meet as a result, with et ⁇ wa same temperature each other, resulting in a particularly homogeneous spray pattern is formed.
  • the temperature maintaining means comprises a nozzle surrounding the thermal Iso ⁇ -regulation. It has been found that even a thermal insulation of the nozzles can be sufficient for holding the nozzles at the predetermined setpoint temperature.
  • conventional temperature-resistant Isoliermateria ⁇ lien can be used, whose thermal diffusivity is less than the thermal conductivity of a material used for producing the first and / or second nozzle.
  • the insulating material may be, for example, mineral wool, ceramic fiber mats or the like. act.
  • the temperature retaining device may further comprise a heating device, e.g. As heating bands or the like., Which surround the nozzles at least in sections. Thus, the nozzles are maintained at a temperature necessary for applying the hot melt adhesive.
  • the first and the second nozzle are each connected at their upstream end with a valve. The valve makes it possible, for example, to generate the spray fan intermittently. Thus, a variety of objects can be successively coated with hot melt at high speed.
  • a further heating device for heating the valve is provided tils.
  • the valve provided on the further Schuvor ⁇ direction can z. B. for heating, preferably provided with a thermal insulation, nozzles are used.
  • the heater for heating the nozzles may also be omitted. This simplifies the structure of the device.
  • a pressure generating device may be provided for generating a predetermined pressure on the melt. It may be a suitable for promoting thermoplastic melts conventional Act pump.
  • the pressure generating device is expediently connected between the valve and the melting device. By means of the pressure generating device, a pressure of 2 to 10 bar, preferably 3 to 6 bar, is applied to the melt.
  • a method for spray coating an article with a hot melt adhesive comprising the steps of:
  • the nozzles are maintained at a predetermined set temperature in the range of 80 ° C to 250 ° C.
  • a predetermined set temperature in the range of 80 ° C to 250 ° C.
  • at the "hot-melt adhesive starting material" is a set physically ⁇ the adhesive.
  • Such an adhesive is usually at room temperature in solid, one-component form. It usually contains no or only small proportions of solvent.
  • the hot melt starting material is a thermoplastic, for example polyamide, saturated polyester or ethylene-vinyl acetate copolymers.
  • the hot glue versions ⁇ starting material may contain additives such as tackifying resins, Plasticizers, stabilizers, antioxidants, fillers, extenders or waxes included.
  • the term "hot melt starting material" also includes reactive
  • Melt adhesives understood that bind physically and chemically. These are Einkomponentensys ⁇ systems in which the hot melt z. B. cures under the action of UV light, moisture or water vapor, which is present in the article to be coated or in the environment.
  • a reactive hot melt adhesive for example, polyurethane (PUR) hot melt adhesive can be used, which cures chemically under the action of moisture.
  • Fig. 1 is a schematic representation of an inventive device ⁇ SEN,
  • Fig. 2 shows an embodiment of the device according to FIGS. 1 and
  • a container 1 is provided with a feeding device 2 for supplying hot melt starting material.
  • the hot glue starting material may ⁇ example be present as granules.
  • Reference numeral 3 denotes a ne first heater for heating the container 1 is called.
  • the container 1 contains a melt S formed from the hot-melt starting material.
  • the melt S can be formed, for example, from a thermoplastic polymer.
  • a leading away from the container 1 first line 4 is connected to a, preferably heatable, pump 5. It may be, for example, a gear, diaphragm or piston pump. By means of the pump 5, the melt S is brought to a pressure in the range of 2 to 10 bar in a second line 6 provided downstream of the pump 5.
  • Reference numeral 7 denotes a valve which is provided with a second heating device 8. From the valve 7 branch off two third lines 9, which open into a first nozzle 10 and a second nozzle 11. The first 10 and second nozzles 11 are each provided with a third heater 12. Although not shown in the figures, it may also be that the first 10 and second nozzles 11 are each provided with a valve. In this case, the first 10 and the second nozzle 11 may each form a structural unit with the respective valve.
  • the Bauein ⁇ unit may in this case also include the second 8 and / or third heater and / or thermal insulation.
  • the first 10 and the second nozzles 11 are arranged so that ejected melt jets Stl, St2 meet at an angle of about 60 °.
  • the nozzles 10, 11 expediently have straight cylindrical nozzle channels whose axes intersect or almost intersect.
  • a meeting point of the melt jets Stl, St2 is designated by the reference symbol T.
  • T By the meeting of the melt jets Stl, St2 forms downstream of the meeting point T a Spray fan SF, which impinges on an object to be coated 13.
  • Fig. 2 shows a further embodiment of the invention.
  • the components used therein correspond to the components mentioned in Fig. 1, like reference numerals have been chosen.
  • the reference numeral 14 designates a thermal insulation, which substantially surrounds both the valve 7 and the first 10 and the second nozzle 11.
  • the second heater 8 for heating the valve 7 is also used for heating the first 10 and second nozzles 11.
  • the thermal insulation 14 can also advantageously be used to keep the third Lei ⁇ lines 9 at a predetermined temperature.
  • the Tempe ⁇ temperature of the melt S is 120 ° to 250 ° C depending on the hot-melt adhesive starting materials ⁇ rial. Conveniently, the temperature of the melt S is kept constant by means of a (not shown here) control. By means of the downstream downstream pump 5, the supplied melt S is brought to a pressure of, for example, 3 to 6 bar. With the valve 7, it is possible to interrupt a connection to the third lines 9. The valve 7 is also maintained at a suitable temperature in the range of 120 to 250 ° C by means of the second heater 8. With the second heating device 8, a temperature can be set, which expediently 10 ° C to 20 ° C higher than the tempera ⁇ temperature of the melt S in the container. 1
  • the melt S passes downstream of the valve 7, preferably heated, third lines 9 to the first 10 and the second nozzle 11. From the first nozzle 10 exits under the pressure generated by the pump 5, a first melt jet Stl; from the second nozzle 11, a second melt jet St2 exits under pressure.
  • the melt jets St1, St2 have expediently at the outlet opening of the nozzles
  • the sharply defined melt jets St1, St2 meet at the meeting point T at the angle to each other.
  • the angle is chosen so that a spray fan SF is formed.
  • the Sprühfowner SF hits with a predetermined Auf Economics Museum B on the downstream of the Treff ⁇ point T arranged object 13.
  • a distance between the meeting point T and a surface of the object to be coated is z. B. 1 cm to 20 cm.
  • the spray fan SF generated with the device according to the invention is "flat", d. H. a thickness extending perpendicular to the impact width B is advantageously 1 to 10 times, preferably 2 to 6 times the diameter of the melt jets St1, St2 at the exit of the nozzles 10,
  • the thickness of the Sprühfumbleers SF ver ⁇ not shown here runs perpendicular to the paper plane.
  • the reference character Z denotes a plane of symmetry.
  • the nozzles 10, 11 are arranged symmetrically to each other.
  • a first length LI of the first melt stream Stl and a second length L2 of the second melt melt stream St2 are the same.
  • a symmetrical spray fan SF is formed.
  • first 10 and the second nozzle 11 are not arranged symmetrically to each other. Further, it may be that the first length LI is different from the second length L2. This makes it possible to produce asymmetric Sprühf kauer SF.
  • the method proposed or "airless spraying” is particularly suitable for applying a hot-melt adhesive to non-woven or woven items 13.
  • ⁇ hot melt adhesive compounds can be achieved excellently gender strength.

Landscapes

  • Nozzles (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

L'invention concerne un dispositif servant à munir un objet (13) d'un adhésif thermocollant (S) par pulvérisation, ledit dispositif comportant une première buse (10) et une seconde buse (11), la première (buse 10) et la seconde buse (11) étant disposées de manière qu'un premier jet de matière fondue (St1) sortant de la première buse (10) et qu'un second jet de matière fondue (St2) sortant de la seconde buse (11) se rencontrent en un angle aigu (α) de sorte à former un jet de pulvérisation en éventail (SF). L'invention concerne également un dispositif de maintien de la température (8, 12, 14) pour maintenir la première et la seconde buse (10, 11) à une température de consigne comprise entre 120 et 250°C.
PCT/EP2013/055731 2012-03-20 2013-03-19 Dispositif et procédé pour munir un objet d'un adhésif thermocollant par pulvérisation WO2013139810A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE102012204426A DE102012204426A1 (de) 2012-03-20 2012-03-20 Vorrichtung und Verfahren zum Sprühbeschichten eines Gegenstands mit einem Heißkleber
EP13710423.8A EP2827999B1 (fr) 2012-03-20 2013-03-19 Appareil et méthode de revetement par pulvérisation d'un objet par colle de type hot melt
PCT/EP2013/055731 WO2013139810A1 (fr) 2012-03-20 2013-03-19 Dispositif et procédé pour munir un objet d'un adhésif thermocollant par pulvérisation

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102012204426.4 2012-03-20
DE102012204426A DE102012204426A1 (de) 2012-03-20 2012-03-20 Vorrichtung und Verfahren zum Sprühbeschichten eines Gegenstands mit einem Heißkleber
PCT/EP2013/055731 WO2013139810A1 (fr) 2012-03-20 2013-03-19 Dispositif et procédé pour munir un objet d'un adhésif thermocollant par pulvérisation

Publications (1)

Publication Number Publication Date
WO2013139810A1 true WO2013139810A1 (fr) 2013-09-26

Family

ID=50070243

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/055731 WO2013139810A1 (fr) 2012-03-20 2013-03-19 Dispositif et procédé pour munir un objet d'un adhésif thermocollant par pulvérisation

Country Status (3)

Country Link
EP (1) EP2827999B1 (fr)
DE (1) DE102012204426A1 (fr)
WO (1) WO2013139810A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014104341A1 (de) 2014-03-27 2015-10-01 Dieffenbacher GmbH Maschinen- und Anlagenbau Verfahren und Vorrichtung zur Erzeugung von Flüssigkeitsnebel
DE102021115091A1 (de) 2021-06-11 2022-12-15 Baumer Hhs Gmbh Heißleimauftragssystem

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5020723A (en) 1989-08-10 1991-06-04 Crist Lawrence E Hot melt glue spraying device
DE102010001454A1 (de) * 2010-02-01 2011-08-04 BSH Bosch und Siemens Hausgeräte GmbH, 81739 Vorrichtung zum Erzeugen eines Gespinsts und deren Verwendung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1125960A (fr) * 1978-02-06 1982-06-22 David C. Mcdaniel Methode et dispositif de deposition de la colle en reliure de livres
ES2115700T3 (es) * 1992-07-08 1998-07-01 Nordson Corp Aparato y procedimientos para la aplicacion de coberturas discretas.
DE19809170B4 (de) * 1998-02-26 2004-10-14 Metacap GmbH Fabrikation farbspritztechnischer Geräte Heißwachs-Sprühvorrichtung
US6719846B2 (en) * 2000-03-14 2004-04-13 Nordson Corporation Device and method for applying adhesive filaments to materials such as strands or flat substrates

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5020723A (en) 1989-08-10 1991-06-04 Crist Lawrence E Hot melt glue spraying device
DE102010001454A1 (de) * 2010-02-01 2011-08-04 BSH Bosch und Siemens Hausgeräte GmbH, 81739 Vorrichtung zum Erzeugen eines Gespinsts und deren Verwendung

Also Published As

Publication number Publication date
DE102012204426A1 (de) 2013-09-26
EP2827999B1 (fr) 2016-06-29
EP2827999A1 (fr) 2015-01-28

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