WO1999062642A1 - Method and device for applying liquid media - Google Patents
Method and device for applying liquid media Download PDFInfo
- Publication number
- WO1999062642A1 WO1999062642A1 PCT/EP1999/003656 EP9903656W WO9962642A1 WO 1999062642 A1 WO1999062642 A1 WO 1999062642A1 EP 9903656 W EP9903656 W EP 9903656W WO 9962642 A1 WO9962642 A1 WO 9962642A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- roller
- application head
- medium
- head according
- compressed air
- Prior art date
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
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
- B05B7/0884—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being aligned
-
- 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
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/025—Nozzles having elongated outlets, e.g. slots, for 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
- B05B7/2483—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 the supplying means involving no pressure or aspiration, e.g. means involving gravity or capillarity
Definitions
- the invention relates to a method for the contactless application of liquid media such as liquefied thermoplastic plastics or melted hot-melt adhesives by means of an application head onto a material web that is relatively movable relative to the application head, the application head having at least one nozzle opening arranged at a distance from the material web for dispensing medium.
- liquid media such as liquefied thermoplastic plastics or melted hot-melt adhesives
- the invention further relates to an applicator head for the contactless application of liquid media - such as liquefied thermoplastic plastics or melted hot-melt adhesives - to a material web that is relatively movable relative to the applicator head, with a housing, with a cylindrical roller chamber in the housing, in particular, in which a roller valve is rotatably driven, with at least one feed opening for introducing medium into the roller chamber and with a nozzle slot running along the roller chamber, which can be controlled by the roller slide and extends transversely to the direction of movement of the material web, for discharging medium onto the material web.
- liquid media - such as liquefied thermoplastic plastics or melted hot-melt adhesives -
- a material web that is relatively movable relative to the applicator head
- a housing with a cylindrical roller chamber in the housing, in particular, in which a roller valve is rotatably driven, with at least one feed opening for introducing medium into the roller chamber and with a nozzle slot running along the
- Application heads of the type mentioned above are used in a variety of applications where material webs are to be laminated onto a substrate and for this purpose have to be provided beforehand with an evenly distributed application of a liquid medium. To keep the specific consumption of liquid medium low and at the same time
- an intermittent job is used to display a job image in a grid pattern.
- the application must be carried out at a high frequency in the direction of movement of the material web if the transport speed of the material web is to be high.
- Transverse points to the direction of movement of the material web should also be as close to one another as possible. In all of this, the medium volume of the individual order grid points should be as low as possible.
- Application heads are known from EP 0 474 155 A2 and from EP 0 367 985 A2, in which perforated nozzles are controlled by means of a pneumatically actuated nozzle needle.
- perforated nozzles are controlled by means of a pneumatically actuated nozzle needle.
- the realization of an economically measured application of medium fails due to the limited maximum cycle frequency of the nozzle units, which is limited due to the inertia of the nozzle needles and the control elements.
- a method and an application head of the type mentioned are known from the unpublished 197 14 029.7.
- a roller slide is used which has an indentation extending over the entire circumference in an axial region in which the feed opening is located. At least in this axial area, there can be no outlet nozzle opening controlled by the roller valve. This means that the outlet nozzle openings must maintain an undesirably large distance in this axial region.
- the roller valve is relatively short. In the case of a greater length, it would be necessary to provide a plurality of feed openings, so that the problem described above occurred repeatedly in a corresponding number along the nozzle slot. Only one application point - viewed along the material web - can be generated with each rotation of the roller slide. This only creates a very rough order grid. The number of adjacent order points is through a limited length of the roller valve due to a deflectable central portion of the roller valve that is not supported is also limited.
- applicators with a plurality of parallel surface grooves or at least one helical or helical surface groove on the roller slide are known, which have a simplified design.
- the application points or application lines of the medium may flow into one another with these application heads.
- the pressure required in the medium is between 20 and 80 bar.
- the object of the invention is to provide a method and an application head of the type described above, with which an extremely dense application pattern can be generated and which are suitable for high transport speeds and large widths of the material web.
- the method according to the invention is characterized in that the at least one nozzle opening is acted upon alternately at the rear with medium and compressed air.
- nozzle opening here means the cavity, which lies directly in front of an exit plane and has a substantially constant cross section, and which can hold a defined volume of medium.
- feed channels At the rear of the nozzle opening there may be feed channels, which may have a different cross-section.
- the method according to the invention is based on the fact that medium is upstream in the nozzle opening, which can be conveyed with a low admission pressure, and that a short application is carried out for the escape of a certain amount of medium from the nozzle opening is caused by compressed air.
- the at least one nozzle opening it is possible for the at least one nozzle opening to remain permanently filled with medium and for the medium to be alternately fed from the rear and compressed air to be applied.
- the exposure to compressed air causes only a pressure surge (impulse) in the medium and / or a slight displacement of a medium column, which leads to the escape of the stated amount of medium from the nozzle opening, without the compressed air itself reaching the outlet level and exiting from the nozzle .
- the at least one nozzle opening is alternately completely filled with medium and through which compressed air flows.
- a lot of medium can be completely displaced by the compressed air from the nozzle opening and accelerated by the emerging air jet.
- the at least one nozzle opening is held stationary and supply channels which are constantly acted upon with medium and compressed air are alternately guided past behind the at least one nozzle opening by means of a drivable control slide.
- the medium and compressed air can be discharged at a high frequency.
- the method according to the invention is characterized in that a defined amount of medium can be stored in the nozzle slot, which has a desired specific order per area, and that this amount of the medium is then "shot" by the compressed air with high energy at the material web.
- the delivery pressure in the medium is therefore no longer the cause of the transfer of the medium to the material web, it only has to be suitable for "loading" the nozzle opening in the desired time. This means that media of high viscosity can also be transferred to the material web without contact, both point-like and thread-like.
- the process according to the invention has the advantage that the medium only has to be forced into the nozzle openings with a low admission pressure in the order of magnitude of 0.2 to 0.5 bar, since the energy impulse for transmission to the material web occurs through the emerging compressed air. It is particularly favorable to monitor the admission pressure in the medium within the application head in order to be able to regulate it to a desired value even in the event of temperature changes depending on the viscosity, which ensures an equal amount of discharge.
- Such an application head according to the invention is characterized in that the control of the medium takes place directly at the nozzle slot, so that the accuracy of the metering cannot be adversely affected by the toughness of the medium or the elasticity of the medium downstream of the control point.
- the surface grooves comprise a plurality of axially parallel grooves which can be supplied with medium and with air alternately over the circumference of the roller slide.
- the display of raster points can be generated by using a corresponding nozzle screen with individual holes at a short distance into the nozzle slot.
- Perforated screens with up to 120 openings per cm 2 can be used, which thus create several rows of grid points per surface groove. If the use of such a nozzle screen is dispensed with, the use of axially parallel grooves results in a line application transverse to the direction of movement of the material web.
- the spacing of the grid points in the direction of movement of the material web can be influenced by changing the speed of rotation of the roller slide. If the surface grooves are distributed at a non-uniform distance over the circumference of the roller slide, a non-uniform dot matrix can be generated at a constant drive speed. On the other hand, with a uniform circumferential spacing of the axially parallel surface grooves, a non-uniform point pattern can be achieved by changing the drive speed of the roller slide.
- Known servomotors for control are capable of such an uneven driving speed.
- the surface grooves can comprise at least a pair of screw-shaped or helical grooves that are twisted into one another and which, viewed in the longitudinal direction of the roller slide, can be supplied alternately with medium and air.
- nozzle slots without nozzle orifices are preferably used, so that the diagonal applications mentioned are placed in the form of uninterrupted threads on the material web.
- the escaping compressed air accelerates the medium and at the same time prevents individual neighboring threads from flowing into one another. It can be advantageous here to use two application heads lying one behind the other with the opposite slope of the surface grooves with the same drive direction or with the opposite drive direction with the same slope, so that a pattern of symmetrically crossing diagonal threads of the medium are produced on the material web.
- the supply of the surface grooves with medium or with air can in each case directly via the roller slide, i.e. via a combination of hollow pins and radial bores or via a combination of radial housing bores and ring channels in the housing or in the roller valve.
- One of the media in the first-mentioned type and the second medium in the second-mentioned type can also be supplied.
- Favorable exemplary embodiments are mentioned in the subclaims, to which reference is hereby made.
- Another application head is characterized in that a standing cylinder is located in the cylindrical roller chamber is arranged coaxially fixed that the standing cylinder has an inner cavity and a longitudinal slot formed in its cylinder jacket, which has an angular position corresponding to the nozzle slot in the housing, that the roller slide is a hollow cylinder provided with radial through holes, which closely surrounds the standing cylinder, that the inner cavity of the standing cylinder is connected to a compressed air supply and that the supply opening for introducing medium into the roller chamber opens into the outlet chamber in an outlet chamber which extends over the length of the roller chamber.
- the roller slide which can be represented as a relatively thin-walled hollow cylinder, rotates here in an annular cylinder space which is formed by the inner upper compartment of the roller chamber and the outer surface of the standing cylinder.
- medium passes through the through-holes in the roller valve which, due to the close contact of the roller valve with the stationary cylinder, cannot initially exit on the inside.
- the roller valve wall enters the narrow gap between the roller chamber surface and the surface cylinder surface, so that essentially individual volumes of medium arise within the individual through holes, the volume of the holes simultaneously determining the later volume of the individual application points.
- roller slide valve preferably represents a thin-walled, seamless screen cylinder, in which the through holes are thus provided Only hold an extremely small volume of medium.
- the roller slide is slidably mounted on the standing cylinder.
- the screen cylinder is Teflon-coated in order to keep the friction low. In particular, this also ensures that the through holes on the inside are closed when the medium is pressed in from the outside.
- the wall thickness of the screen cylinder is preferably not more than 0.3 mm, which provides a first component for dimensioning the volume of an application point.
- the through holes which are generated galvanically have a density of up to 200 / cm 2 and that the through holes have in particular a diameter of 0.02 to 0.2 mm.
- the volume of the individual application points can be estimated from these technically representable dimensions, whereby media buildup in the through holes must be taken into account.
- Galvanic production here means electrochemical raster-like removal after previous phototechnical application of a cover layer which forms a dot raster.
- the roller valve is preferably designed to be rotatably drivable - in particular via two drive shafts diametrically opposite to the roller axis.
- These drive shafts or drive rollers can have frictional contact with the roller slide in some areas or over the entire length, so that it can be driven to rotate via friction rollers or friction rollers.
- the roller slide can be stiffened at its axial ends by covers and / or flanges to increase the strength.
- roller slide is positively engaged with drive means at these axial ends off-axis, that is to say, for example, by means of welded toothed rings by means of drive pinions.
- drive means at these axial ends off-axis, that is to say, for example, by means of welded toothed rings by means of drive pinions.
- These can also be arranged diametrically opposite to the roller axis in a double arrangement in order to avoid one-sided loads on the roller slide relative to the standing cylinder.
- the drive rollers mentioned can also act as wiping rollers for the medium.
- wiping rollers which run parallel to the outlet chamber and are viewed in the direction of rotation of the roller slide behind the roller slide, in the roller chamber.
- it can be provided to form a doctor device in the housing, which runs parallel to the outlet chamber and is viewed behind this in the direction of rotation of the roller slide.
- the compressed air supply to the inner cavity in the standing cylinder can take place via an inlet arranged coaxially in the housing.
- the housing should preferably be provided with heating devices.
- FIG. 1 shows a perspective view of an application head according to the invention of a first type in a first embodiment with a material web moving beneath it
- FIG. 2 shows an application head according to the invention of a first type in a second embodiment with a material web moving beneath it in a perspective view
- FIG. 3 shows a perspective view of an application head according to the invention of a second type in a first embodiment with a material web moving beneath it;
- FIG. 4 shows an applicator head according to FIG. 3 in cross section
- Figure 5 shows an application head according to the invention of Figure 3 in longitudinal section
- FIG. 6 shows enlarged details of the roller valve according to FIG. 3
- Figure 1 shows an application head 11 of elongated cubic shape.
- a pin 15 of a roller slide 13 protrudes from the housing 12 of the application head 11.
- the pin 15 has an axial bore 16, through which, as indicated by an arrow 17, medium is supplied.
- On the housing 12 there are 13 sockets 31, 32, approximately at the ends of the roller slide, via which, as indicated by further arrows 33, 34, compressed air is supplied.
- the roller slide 13 has on its cylindrical surface a plurality of first axial grooves 25, in which radial bores 27 end.
- the radial bores 27 are connected to an inner central cavity 29 into which the axial bore 16 flows into. In this way, the first axial grooves 25 are constantly supplied with medium.
- the roller slide 13 also has on its cylindrical surface a plurality of second axial grooves 26, which alternate with the first axial grooves 25 over the circumference.
- the ends of the second axial grooves 26 form openings 39, 40 in circumferential grooves 35, 36 on the roller valve.
- These circumferential grooves 35, 36 lie in the area of the connecting pieces 31, 32 and are separated from the first axial grooves 25.
- the circumferential grooves 35, 36 are connected to radial housing bores 37, 38 into which the sockets 31, 32 are screwed. In this way, the second axial grooves 26 are continuously pressurized with compressed air.
- the housing 12 tightly encloses the roller slide 13 with a cylindrical roller chamber 20, from which feed channels 21 lead to a nozzle slot 18 into which a perforated diaphragm, not shown in detail, is inserted.
- the roller valve 13 is driven in rotation.
- the nozzle slot 18 and the feed channels 21 are alternately connected to a first axial groove 25, which carries the medium, and to a second axial groove 26, which carries compressed air, so that the nozzle slot 18 is alternately filled with medium and this is displaced by compressed air .
- the entire quantity of medium contained in the feed channels 21 and the nozzle slot 18 is preferably completely blown out of compressed air.
- the channel lengths (21) or nozzle openings (18) are dimensioned much smaller than shown in the drawing.
- a spray curtain 19 emerging from the nozzle slot 18 can be seen, which meets a material web 22, the direction of movement of which is symbolized here by an arrow 23.
- the spray curtain 19 generates an application pattern 24 on the material web, which forms a rectangular dot pattern.
- the one mentioned Pinhole can be made in the form of a fine-meshed screen, so that a plurality of rows of dots are stored in the nozzle area each time a first axial groove 25 is passed, and are transferred from the pinhole to the material web by means of compressed air when a second axial groove 26 is passed.
- the roller slide 13 can be driven by a servo motor at the end of the housing opposite the pin 15.
- Figure 2 shows an application head 71 of elongated cubic shape.
- a pin protrudes from the housing 72 of the application head 71
- the pin 75 of the roller slide 73 has an axial bore 76, through which, as indicated by an arrow 77, medium is supplied.
- the roller slide 73 has on its cylindrical surface two mutually parallel screw grooves, a first screw groove 85 and a second screw groove 86. Radial bores 87 end in the first screw groove 85 and are connected to an inner cavity 89.
- the central inner cavity 89 faces the axial bore
- the second screw groove 86 is connected to individual radial bores 88 which are connected to three circumferentially distributed parallel bores 90 in the roller slide.
- the parallel bores 90 can emerge from the roller slide 73 at the end opposite the pin 75 and can be supplied with compressed air via an annular space in the housing 72, which air enters the housing 72 according to the arrow 94.
- the air duct is to be designed in such a way that the roller slide 72 can still be driven by a servo motor from the end opposite the pin 75.
- the housing 72 encloses the roller slide 73 with a cylindrical roller chamber 80, from which feed channels 81 form a nozzle slot 78 to lead. As indicated by a rotating arrow 74, the roller slide is driven in rotation.
- the nozzle slot is alternately connected in its longitudinal direction to sections of the medium-carrying first screw groove 85 and the compressed air-carrying second screw groove 86.
- these sections migrate along the nozzle slot 78.
- each individual section of the nozzle slot is alternately filled with medium and this is displaced by compressed air.
- the entire amount of medium lying behind the section under consideration is completely blown out of compressed air from the supply channels 81 and the nozzle slot 78.
- the channel lengths (81) and the nozzle opening (78) are dimensioned much smaller than shown in the drawing.
- a spray curtain 79 emerges from the nozzle slot 78, which is essentially completely open over its length, possibly using a few bridges which keep the nozzle gap constant. This strikes a material web 82, the direction of movement of which is symbolized by an arrow 83.
- the spray curtain 79 creates an application pattern 84 on the material web, which essentially consists of diagonal individual threads. Using two similar application heads one behind the other with the opposite drive direction of the roller pusher, a web of crossing thread sheets can be produced.
- FIG. 3 shows an application head 111 of elongated cubic shape, which is arranged above a material web 112, the direction of movement of which is indicated by an arrow 113.
- a drop veil 114 emerges from the application head 111 and generates an application point grid 115 on the moving material web 112.
- two drive rollers 116, 117 emerge from the housing, the direction of rotation of which is indicated by rotation arrows. With a circular The position of a roller slide 118 relative to the drive rollers 116, 117 is indicated on the front end of the application head, as is the direction of rotation of the rotary arrow.
- an air supply pipe 119 can be seen.
- a further supply connection 120 for medium is located on the circumference of the housing.
- an electrical cable connection 121 is shown on the housing for supplying heating devices. The emergence of a ventilation hole 122 can also be seen.
- FIG. 4 shows the housing 131 with the cylindrical roller chamber 132, which opens outwards in a nozzle slot 133 along the housing.
- a standing cylinder 134 is arranged in the roller chamber 132 at a radial distance. This forms a central cavity 135.
- a longitudinal slot 136 is embodied in the standing cylinder 134 at an angular position coinciding with the nozzle slot 133.
- the cavity 135 is connected to the aforementioned air supply 119.
- the circular cylindrical thin-walled roller valve 118 In the cylindrical annulus between the inner wall of the roller chamber 132 and the outer surface of the standing cylinder 134 is the circular cylindrical thin-walled roller valve 118. This has radial through openings, which will be shown later.
- the roller slide is driven clockwise by two friction rollers 116, 117 with which it is in surface contact.
- a feed chamber 124 which runs along the roller slide 118 and which is supplied with liquid medium via the feed nozzle 120 and a radial bore 123. This enters the through holes 125 of the roller slide 118, 117 individual volumes being generated when the drive roller passes by. When these individual volumes are swept between the compressed air-loaded longitudinal slot 136 and the nozzle slot 133, the drop curtain 114 is created. The air trapped in the roller valve 118 escapes through the vent hole 122 when medium is again pressed into the through holes 125 of the roller valve 118 in the feed chamber 124.
- heating elements 137, 138, 139 are arranged, which are supplied with current via the electrical cable connection 121.
- FIG. 5 it can be seen in the section indicated in FIG. 4 that the housing 131 is closed with two covers 141, 142, on the inside of which ring grooves 143, 144 are made, in which the standing cylinder 134 is held.
- the roller slide 118 which does not engage in the ring grooves, is slidably mounted on the standing cylinder 134.
- the through holes 125 of the roller valve are visible.
- the pin emerges from one of the drive rollers 116, which are in frictional contact with the surface of the roller slide.
- the air supply pipe 119 connects coaxially, in which an air supply duct 126 is formed, which is connected to the cavity 135 of the standing cylinder 134.
- the longitudinal section 136 in the standing cylinder 134 and the nozzle slot 133 in the housing 131 can be seen, which are separated from the roller valve.
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Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99926435A EP1082177B1 (en) | 1998-06-03 | 1999-05-27 | Method and device for applying liquid media |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19824538.6 | 1998-06-03 | ||
DE1998124538 DE19824538C2 (en) | 1998-06-03 | 1998-06-03 | Method and device for applying liquid media |
DE19854634.3 | 1998-11-26 | ||
DE1998154634 DE19854634C1 (en) | 1998-11-26 | 1998-11-26 | Contactless application of a fluid, especially a thermoplastic or molten hot melt adhesive, onto a moving strip and applying head with a housing containing a chamber and a rotating roll slide |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999062642A1 true WO1999062642A1 (en) | 1999-12-09 |
Family
ID=26046573
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1999/003656 WO1999062642A1 (en) | 1998-06-03 | 1999-05-27 | Method and device for applying liquid media |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1082177B1 (en) |
WO (1) | WO1999062642A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3006116B1 (en) * | 2014-10-10 | 2019-12-04 | Puffe Engineering GmbH | Application assembly and application assembly set |
CN117960422A (en) * | 2024-03-29 | 2024-05-03 | 宁波劳伦斯汽车内饰件有限公司 | Spray head structure for automobile paint spraying |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3459336A (en) * | 1967-02-27 | 1969-08-05 | Gunnar Ruud | Means for dispensing glue or adhesives in predetermined volumes,particularly for use in the manufacture of packages of cardboard |
EP0367985A2 (en) | 1988-11-07 | 1990-05-16 | Nordson Corporation | Nozzle attachment for an adhesive spray gun |
DE4001452A1 (en) * | 1990-01-19 | 1991-07-25 | Waco Walzen Konstruktion Syste | Method of coating strip of material with liquid - by means of rotating cylindrical sieve |
EP0474155A2 (en) | 1990-09-06 | 1992-03-11 | Nordson Corporation | Nozzle cap for an adhesive dispenser |
US5389148A (en) * | 1993-01-28 | 1995-02-14 | Nordson Corporation | Spray apparatus utilizing porous sheet |
US5615830A (en) * | 1993-12-17 | 1997-04-01 | Nordson Corporation | Apparatus and method for supply and transport of powder particles |
-
1999
- 1999-05-27 WO PCT/EP1999/003656 patent/WO1999062642A1/en active IP Right Grant
- 1999-05-27 EP EP99926435A patent/EP1082177B1/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3459336A (en) * | 1967-02-27 | 1969-08-05 | Gunnar Ruud | Means for dispensing glue or adhesives in predetermined volumes,particularly for use in the manufacture of packages of cardboard |
EP0367985A2 (en) | 1988-11-07 | 1990-05-16 | Nordson Corporation | Nozzle attachment for an adhesive spray gun |
DE4001452A1 (en) * | 1990-01-19 | 1991-07-25 | Waco Walzen Konstruktion Syste | Method of coating strip of material with liquid - by means of rotating cylindrical sieve |
EP0474155A2 (en) | 1990-09-06 | 1992-03-11 | Nordson Corporation | Nozzle cap for an adhesive dispenser |
US5389148A (en) * | 1993-01-28 | 1995-02-14 | Nordson Corporation | Spray apparatus utilizing porous sheet |
US5615830A (en) * | 1993-12-17 | 1997-04-01 | Nordson Corporation | Apparatus and method for supply and transport of powder particles |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3006116B1 (en) * | 2014-10-10 | 2019-12-04 | Puffe Engineering GmbH | Application assembly and application assembly set |
CN117960422A (en) * | 2024-03-29 | 2024-05-03 | 宁波劳伦斯汽车内饰件有限公司 | Spray head structure for automobile paint spraying |
Also Published As
Publication number | Publication date |
---|---|
EP1082177B1 (en) | 2007-02-21 |
EP1082177A1 (en) | 2001-03-14 |
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