EP0222379A2 - Dispositif de pulvérisation d'un produit de revêtement - Google Patents

Dispositif de pulvérisation d'un produit de revêtement Download PDF

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Publication number
EP0222379A2
EP0222379A2 EP86115697A EP86115697A EP0222379A2 EP 0222379 A2 EP0222379 A2 EP 0222379A2 EP 86115697 A EP86115697 A EP 86115697A EP 86115697 A EP86115697 A EP 86115697A EP 0222379 A2 EP0222379 A2 EP 0222379A2
Authority
EP
European Patent Office
Prior art keywords
spray head
melt adhesive
gas
line
hot
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Withdrawn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
EP86115697A
Other languages
German (de)
English (en)
Other versions
EP0222379A3 (fr
Inventor
Henning J. Claassen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0222379A2 publication Critical patent/EP0222379A2/fr
Publication of EP0222379A3 publication Critical patent/EP0222379A3/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Withdrawn legal-status Critical Current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
    • 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
    • B05B7/1606—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 spraying of the material involving the use of an atomising fluid, e.g. air
    • B05B7/1613—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 spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed
    • 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
    • B05B7/24—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2489—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device

Definitions

  • the invention relates to a device for spraying application masses, in particular hot melt adhesives, of the type specified in the preamble of claim 1.
  • Such a device is known, for example, from DE-OS 2 836 545 or DE-OS 3 416 105 and is generally used to apply adhesives, in particular hot-melt adhesives, to a substrate.
  • Such a device has a source for the production of the flowable application masses, hereinafter also referred to as "liquefaction device”, which, for example, delivers a hot and thus also flowable hot-melt adhesive under high pressure, which via a first line, generally a hose, connects one Spray nozzle is fed.
  • a heating tape integrated in the hose at least one temperature sensor and a control device, it is ensured that the hot melt adhesive in the hose core is always at an optimal temperature.
  • the hot melt adhesive supplied is atomized by means of a gas, generally air, which is supplied under pressure, so that the hot melt adhesive is applied in the atomized form to a substrate.
  • the gas line for the spray head can either be designed as a separate line or integrated into the hot melt adhesive hose, as is known from DE-OS 3 416 105.
  • Both lines usually contain shut-off devices, generally controllable solenoid valves, which can interrupt the supply of the hot, flowable hot melt adhesive or the compressed air.
  • the invention is therefore based on the object of providing a device for spraying application compositions of the type specified, in which the disadvantages mentioned above do not occur.
  • a spray device is to be proposed in which the activation of the spray device and the start of the application process coincide.
  • a bypass is provided in the gas line, which bypasses the shut-off element, generally a solenoid valve, through which a relatively small gas flow constantly flows, ie the spray head is constantly acted upon by this small gas flow, and This is true even if the source for the production of the flowable application mass, in general a liquefaction device, is switched off, ie no application mass is supplied.
  • the shut-off element generally a solenoid valve
  • the spray head When the spray device is switched on, the spray head can be fed with the hot, liquid application mass immediately, so that the usual time delay between the switching-on process and the discharge of the application mass is eliminated.
  • a heated gas generally air
  • this can be done by integrating the gas line into the hose that connects the source, as the liquefaction device, to the spray head.
  • a throttle for adjusting the gas flow which is adjustable according to a preferred embodiment, is expediently provided in the gas line; If this throttle is located, for example, in the part of the gas line which is connected directly to the spray head, the throttle can be used to adjust the amount of air supplied to the spray head and also to ensure that the gas reaches the spray head at high speed. This can have a positive influence on the spraying process.
  • FIG. 1 shows a device, generally indicated by reference number 10, for spraying application compositions, namely hot melt adhesives, with a liquefaction device 12, which may have the structure known from DE-OS 2 836 545, for example.
  • the liquefaction device 12 has on its top a filler cap 14 for the hot melt adhesive to be refilled.
  • the device 10 also contains a hot melt adhesive hose 16, which is shown larger in the left part of FIG. 1 than in the right part.
  • This hot melt adhesive hose 16 opens into a spray head 18, on the underside of which a nozzle 19 is provided for spraying the hot melt adhesive onto a material web 20 which is moved in the direction of the arrow and is to be coated with the hot melt adhesive; the emerging sprayed hot melt adhesive is indicated in the figure with dashed lines.
  • the hot-melt adhesive hose 16 has a connecting piece 22 at its inlet end and a connecting piece 24 at its outlet end, which are attached to the liquefaction device 12 or the spray head 18 by corresponding counterparts.
  • a compressed air inlet hose 28 which opens into a shut-off element designed as a solenoid valve 30, which is acted upon by the compressed air flowing in the direction of the arrow, and two connected to the liquefaction device 12 via plugs Lines, namely a supply line 32 connected to a hot strip in the interior of the hot-melt adhesive hose 16 and a control line 34.
  • an outlet hose 36 for warm air penetrates the outer wall of the hot-melt adhesive hose 16 and opens into the underside of the spray head 18.
  • the hot melt adhesive hose 16 has, for example, the structure as is known from DE-OS 3 416 105, ie the air line is integrated in the hot melt adhesive hose 16, so that the compressed air supplied and the heated hot melt adhesive in the hot melt adhesive hose are kept at the specified temperature.
  • hot melt adhesive hose 16 and compressed air line can also be designed separately.
  • the compressed air line branches in front of the solenoid valve 30, that is to say a line leads to the solenoid valve 30, while a bypass 38 bypassing the solenoid valve 30 is connected to the compressed air hose 28 at a point which is downstream of the solenoid valve 30 when viewed in the flow direction is.
  • the spray device 10 shown in FIG. 1 has the following mode of operation: in the liquefaction device 12, the hot melt adhesive filled through the cover 14 is heated and thereby liquefied; since the shut-off device for supplying the liquefied hot melt adhesive is still closed (this shut-off device is generally located in the liquefaction device 12 and is not shown in FIG. 1), no hot melt adhesive can escape from the spray head 18.
  • a corresponding switching signal is given, whereby the valve 30 in the compressed air line 28 and the shut-off element of the liquefaction device 12 are opened at the same time.
  • the heated and thereby liquefied hot melt adhesive is introduced by a high pressure displacement pump (not shown) in the liquefaction device 12 via the connection 22 into the hot melt adhesive hose 16.
  • the solenoid valve 30 is opened so that the entire amount of compressed air available flows via the solenoid valve 30 and the air hose 28 through the hot melt adhesive hose 16 and the air hose 36 into the spray head 18.
  • the hot-melt adhesive leaves the hot-melt adhesive hose 16 via the nozzle 24 at approximately the same temperature that it has when it enters the hot-melt adhesive hose 16; the compressed air also leaves the hot melt adhesive hose 16 via the gas line part 36 at approximately the same temperature as the hot melt adhesive.
  • the compressed air heated in this way is introduced into the spray head 18 into the hot-melt adhesive stream in such a way that it is atomized, the temperature-controlled air stream having such a temperature that on the one hand it does not lead to premature solidification of the hot-melt adhesive applied, but on the other hand it does not lead to overheating of the hot-melt adhesive and thus to impair its properties when leaving the spray head 18.
  • FIG. 2 shows an embodiment which differs from the spray device according to FIG. 1 in the following features; the spray head is not designed as a stationary machine, but as a manual spray gun 48 with a trigger-like actuating lever 50, which can be pivoted by hand over the substrate 20 to be coated.
  • the throttle 42 is not in the air hose 36 but in the bypass 38, i.e. in this embodiment only the amount of compressed air flowing through the bypass can be adjusted.
  • the air line 44 is connected to a heat exchanger 46 so that the actual spraying device 10 is supplied with compressed air which has already been heated.
EP86115697A 1985-11-15 1986-11-12 Dispositif de pulvérisation d'un produit de revêtement Withdrawn EP0222379A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853540619 DE3540619C1 (de) 1985-11-15 1985-11-15 Vorrichtung zum Verspruehen von klebrigen Auftragmassen
DE3540619 1985-11-15

Publications (2)

Publication Number Publication Date
EP0222379A2 true EP0222379A2 (fr) 1987-05-20
EP0222379A3 EP0222379A3 (fr) 1987-11-11

Family

ID=6286119

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86115697A Withdrawn EP0222379A3 (fr) 1985-11-15 1986-11-12 Dispositif de pulvérisation d'un produit de revêtement

Country Status (3)

Country Link
EP (1) EP0222379A3 (fr)
JP (1) JPH0661504B2 (fr)
DE (1) DE3540619C1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0367985A2 (fr) * 1988-11-07 1990-05-16 Nordson Corporation Adaptateur d'une tuyère pour un pistolet à adhésif
US5065943A (en) * 1990-09-06 1991-11-19 Nordson Corporation Nozzle cap for an adhesive dispenser
US5169071A (en) * 1990-09-06 1992-12-08 Nordson Corporation Nozzle cap for an adhesive dispenser
FR2737980A1 (fr) * 1995-08-23 1997-02-28 Sames Sa Procede et dispositif de projection de produit de revetement

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3739983A1 (de) * 1987-11-25 1989-06-08 Siemens Ag Verfahren und vorrichtung zur herstellung eines fest-elektrolytkondensators
EP0576498B2 (fr) * 1991-03-27 2000-05-17 SCA SCHUCKER GmbH Procede et dispositif d'application d'une matiere pateuse
DE10135595C1 (de) * 2001-07-20 2003-02-13 Optimel Schmelzgustechnik Gmbh Verfahren zum kontinuierlichen Herstellen von dünnen, beidseitig mit Isoliermaterialien umhüllten Transpondern
CN102822012B (zh) 2010-04-07 2016-07-20 爱尔康研究有限公司 轮脚组件
AT515673B1 (de) 2014-05-07 2015-11-15 Haas Food Equipment Gmbh Wechselbarer Cremestreichkopf

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0160731A1 (fr) * 1984-04-30 1985-11-13 MELTEX Verbindungs-technik GmbH Tuyau flexible pour colles à fusion

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL82956C (fr) * 1950-03-31 1900-01-01
DE2836545C2 (de) * 1978-08-21 1984-11-08 Fa. Henning J. Claassen, 2120 Lüneburg Gerät zum Verflüssigen von Schmelzmassen, insbesondere Schmelzklebestoffen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0160731A1 (fr) * 1984-04-30 1985-11-13 MELTEX Verbindungs-technik GmbH Tuyau flexible pour colles à fusion

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0367985A2 (fr) * 1988-11-07 1990-05-16 Nordson Corporation Adaptateur d'une tuyère pour un pistolet à adhésif
EP0367985A3 (en) * 1988-11-07 1990-08-08 Nordson Corporation Nozzle attachment for an adhesive spray gun
US5065943A (en) * 1990-09-06 1991-11-19 Nordson Corporation Nozzle cap for an adhesive dispenser
US5169071A (en) * 1990-09-06 1992-12-08 Nordson Corporation Nozzle cap for an adhesive dispenser
FR2737980A1 (fr) * 1995-08-23 1997-02-28 Sames Sa Procede et dispositif de projection de produit de revetement

Also Published As

Publication number Publication date
JPH0661504B2 (ja) 1994-08-17
EP0222379A3 (fr) 1987-11-11
DE3540619C1 (de) 1987-05-14
JPS62176564A (ja) 1987-08-03

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