US3918401A - Apparatus for powder coating metal articles - Google Patents
Apparatus for powder coating metal articles Download PDFInfo
- Publication number
- US3918401A US3918401A US461696A US46169674A US3918401A US 3918401 A US3918401 A US 3918401A US 461696 A US461696 A US 461696A US 46169674 A US46169674 A US 46169674A US 3918401 A US3918401 A US 3918401A
- Authority
- US
- United States
- Prior art keywords
- chamber
- spray
- air
- powder
- powdered material
- 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.)
- Expired - Lifetime
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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
- B05B7/14—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 designed for spraying particulate materials
- B05B7/1481—Spray pistols or apparatus for discharging particulate material
- B05B7/1486—Spray pistols or apparatus for discharging particulate material for spraying particulate material in dry state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
- B05B14/10—Arrangements for collecting, re-using or eliminating excess spraying material the excess material being particulate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
- B05B14/30—Arrangements for collecting, re-using or eliminating excess spraying material comprising enclosures close to, or in contact with, the object to be sprayed and surrounding or confining the discharged spray or jet but not the object 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
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/08—Plant for applying liquids or other fluent materials to objects
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Definitions
- ABSTRACT A method and apparatus for powdercoating surfaces of articles selectively whereby coating is obtained only on the desired surfaces while leaving other surfaces uneoated are provided.
- the invention is particularly adapted for the coating of container ends with powdered materials by applying the material selectively thereto and permitting recovery of the excessive material which is recovered and recycled to the system.
- powder spraying Another commonly used method is that of powder spraying.
- powdered material is sprayed and thermoadhesively applied to articles preheated to the fusion temperature of the powdered material or, alternatively the particlesare sprayed through an electrostatic field whereby the powdered material adheres to the article by electrostatic charge.
- Most of such procedures involve moving articles in and out of spray chambers and are accompanied by dust problems, often with waste of large amounts of the powdered material.
- it is often difficult to obtain desirable film thickness on coated parts by these types of spraying With many of such techniques to obtain adequate thickness it will be required that large amounts of the powdered material be held in position adjacent the article for a substantial period of time. This requirement often precludes obtaining speeds suitable for commercial production.
- powder coating has certain advantages over other coating techniques, the problems arising in obtaining coatings of adequate thickness and uniformity, of operating at commercial speeds, of controlling dust and waste of material and of obtaining adequate masking where selective coatings are desired present substantial problems in the spraying method.
- This invention provides a method and apparatus whereby all of the disadvantages of prior powder coating techniques enumerated above are obviated.
- the in- METAL vention permits rapid and selective coating of articles, obtaining films of desired thickness whereby coating is obtained only on the desired surfaces, dust problems and waste of materials are eliminated and recovery and reuse of excessive material is realized.
- the invention provides a method of selectively coating areas of an article with powdered material which comprises the steps of:
- the method also preferably includes admixing the withdrawn material with new powdered materials;
- a spray device comprising a spray chamber and having 1. means for injecting air and conveying powder particles to a spray chamber;
- a mask chamber comprising an air stream disposed about the orifice of said spray chamber for shielding predetermined areas of said article from contact with said particles.
- the apparatus also additionally comprises:
- a vacuum manifold connected to said spray chamber and to said mask chamber through a first low pressure air passage and a second higher pressure passage, respectively, for withdrawing an air stream containing excess powered material;
- a powder supply'chamber connected to said spray device through apowder feed passage and through said vacuum manifold having 1. means for supplying new powdered material for admixture with withdrawn powdered material; 2. means for reconditioning said powdered material; and 3. means for feeding powdered material to said spray device; and
- E a blower creatingan air current which exhausts air from each of said spray chamber, mask chamber, vacuum manifold and power supply chamber.
- a container 1 supported on acontainer indexing unit (not shown), comprising, for example, a turret 2 to which a timer is connected through a proximity sensor 4.
- the container is positioned at one end of a spray device 8 which rests on a suitable supporting base (not shown) comprising a spray chamber 12 and air passages 14, 16 and 18.
- a mask chamber 20 comprising an air passage 22 is disposed peripherally around the orifice of the spray chamber.
- Air passages 18 and 22 are connected to a vacuum manifold 24 which is connected through a suitable connecing line or overspray tube 26 to a powder supply chamber 28.
- Asupply of fresh powder is contained in a suitable bin 30 and is connected to the supply chamber through line 32.
- the chamber comprises filters 34, preferably at its upper end, a rotary valve 36 at its lower end, a reconditioner 38 and is connected to the spray device through powder feed passage 40.
- a blower 42 is also connected at a point opposite or above the filters of the powder supply chamber.
- Air pressure regulators l and 17 and solenoid valves 19 and 21 which function to introduce and permit control of air injected to fluidize and aspirate the powder, respectively, are arranged in close proximity to the spray chamber 12 to minimize powder transport times and to maximize timing accuracy of the powder flow in high speed operation.
- High pressure air from a suitable source, is directed to two paths through the regulators and solenoid valves with and 19 furnishing air to fluidize the powder feed and 17 and 21 introducing the injection air to the aspirator 9 which blows the powder onto the container.
- the solenoid valves are preferably pulsed simultaneously for the appropriate length of time to coat the container end while it is in-station.
- the fluidizing air is preferably also pulsed rather than continously fed.
- the injection air pressure may vary from about 5 to 90 psi while the fluidizing air pressure may vary from about 0 to 50 psi. Varying either of these pressures will change the film thickness.
- These regulators therefore offer ready control of the film thicknesses obtained. It has been found that increasing the injection air pressure increases the film thickness while increasing the fluidizing air pressure tends to reduce the film thickness. In practice, it is con- .venient to operate at a constant fluidizing pressure and vary only the injection air pressure thereby producing films varying from above five mils to less than one mil, as desired. Optimumresults have been obtained with electrostatically charged particles employing injection air pressure at about 30 psi and fluidizing air pressure at about 6 psi.
- the injection air carries the' stream of particles into the aspirator 9 where it preferably travels past means for electrically charging the same. Any charging means, such as corona discharge, arcs, sparks orradiationmay be used.
- high voltage electrodes 10 are employed which serve to electrically charge the particles which flow through the spray chamber 12 and mask chamber 20 to the container end.
- the spray chamber of the spray device contains vent openings 11 to permit expansion of the pressurized air stream.
- a diffusion cone 13 Disposed within the chamber is a diffusion cone 13 which may be of suitable configuration, for example, a disk or cone of suitable material, preferably plastic, to direct and aid incontrol of the flow of the particles to the container end.
- the cone may be mounted on a rod coaxial with the aspirator or independently mounted on supports attached to the side walls of the spray chamber.
- the diffusion cone an optional feature of the present apparatus, is preferred, since it has been found that the powder stream emanating from the aspirator and applied to the article has a tendency to be more concentrated in the center portion of the can end than the outer portion where it is most desired. Placement of the cone tends to even the powder distribution.
- the spray chamber 12 and mask chamber 20 are connected to air passages 18 and 22, respectively, which are jointly converged in the vacuum manifold 24.
- air at atmospheric pressure enters the mask chamber around the periphery of the container end to mask and prevent powder from contacting the sidewall of the container.
- the vacuum in the respective chambers may be controlled through any means desirable, for example employing butterfly valves or by decreasing the diameter of one passage relative to the other.
- the vacuum is greater in the mask chamber than in the spray chamber.
- the lesser vacuum in the spray chamber precludes disturbance of the powder spray pattern, allowing an optimum amount of particles to reach the article and yet is sufficient to withdraw excess material that falls into the passage.
- the greater vacuum in the mask chamber is sufficient to withdraw atmospheric air entering around the periphery of the container end and the spray chamber orifice and to withdraw excess powder thereby preventing powder particles from contacting the sidewalls of the container.
- Specific pressures are not critical as long as the difference in the air pressures in the respective chambers is sufficient to enable the apparatus to function as described above. In operation, for examples, vacuums as low as 1 inch of water in the mask chamber and onefourth inch of water in the spray chamber have been found to be suitable.
- Excess powder withdrawn through the spray and mask chambers is converged in the vacuum manifold and is fed through the overspray line 26 to the powder supply chamber 28 by vacuum powdered on the total system by the blower 42.
- Overspray powder is filtered through suitable means such as bag filters 34, from which particles are separated from the air current created by the blower and which are periodically cleaned by air pulsed to their inner surfaces.
- the powder falls to the lower portion of the unit, which is preferably cone shaped, into the rotary valve 36.
- the system is replenished with fresh powder as needed through a tube 32 connected through valve 31 to the bin of fresh powder 30.
- the rotary valve has a plurality of compartments into which powder falls and is driven by suitable means such as an electric motor so that with each revolution a predetermined amount of powder from the container will fall into the reconditioner 38 which may be simply a rotary brush revolving against a screen.
- suitable means such as an electric motor so that with each revolution a predetermined amount of powder from the container will fall into the reconditioner 38 which may be simply a rotary brush revolving against a screen.
- treated material is then fed to the spraydevice bygravity in readiness forthe' next coating procedure.
- the powders employed maybe any material capable of being electrostatically charged and/ortherm'ally adhered and sprayed.
- afe thermoplastic or therrnosetting resins including polyester, vinyl, polyamide, polyethylene and epoxy resins and mixtures thereof.
- expoxy resins such as the glycidyl ethers of bisphenol Ax'I-he pow- I dered materials may include suitable hardeners, pigments and fillers as. desired. 1
- the powders are prepared by grinding the bulk materials.
- the powder particles are preferably'ground to have particles within the range of about 5 to 150 microns with an average particle size of about 30 to 75 microns.
- Most preferably the powder will have an average particle size of microns or less although the ready adjustment of fluidizing and injection pressures in the spray device makes the process operable with generally any particle size range.
- the apparatus of the invention is effective for electrostatic powder coating or thermo-adhesive powder coating procedures.
- the container may be preheated, if desired, although satisfactory results are obtained in the absense of such preheating step.
- the containers be preheated to an elevated temperature that is sufficient to cure'the resin particles to the article but insufficient to cure the resin upon contacting the article since flow out of the coating during subsequent curing is desired to obtain satisfactory coatings in terms of rheological and physical properties.
- Adequate coatings have been prepared herein utilizing temperatures of about 275F to about 350F, with higher or lower temperatures being operable depending upon the particular resin employed.
- the mode of operation of the apparatus according to the invention which may be employed for electrostatically powder coating a container end with an epoxy resin is as follows.
- a powdered formulation comprising an epoxy resin (for example, a glycidyl ether of bisphenol A available commercially as DER-642, Dow Chemical Comapany), a suitable catalyst (for example dicyandiamide) and pigment (for example TiO is charged to the powder supply chamber from the fresh powder bin where it is fed through the rotary valve, reconditioner and powder feed passage to the spray device.
- a container is indexed to the orifice of the spray chamber and positioned so that the bottom end may be coated.
- a proximity sensor and timer trigger the solenoid valves and air regulators injecting air to fluidize the powder feed at about 6 psi and to the aspirator at about 30 psi.
- the fluidized particles in the air stream are sprayed past the electrodes where the particles are charged and directed against the container end.
- the particles adhere electrostatically and uniformly to the surface of the container end.
- the side walls of the container are shielded from contact with the particles by the mask chamber, excess particles are withdrawn through the vacuum manifold and returned -to the powder supply through the overspray where they are filtered from the airstream, mixed with new powder, reconditioned and fed to the spray device.
- An apparatus for selectively powder coating areas of an article which comprises, in combination:
- A. a spray device comprising a spray chamber and having 1. means for injecting air and conveying powder particles in an air stream to a spray chamber;
- a mask chamber comprising an air current disposed between the orifice of the spray chamber and the article for shielding predetermined areas of said article from contact with said particles.
- An apparatus as claimed in claim 1 additionally comprising:
- a vacuum manifold connected to said spray chamber and to said mask chamber through a first low pressure air passage and a second higher pressure air passage, respectively, for withdrawing air and excess powdered material;
- a supply chamber connected to said spray device and said vacuum manifold comprising means for feeding powdered material to said spray device;
- blower creating an air current which exhausts air from said spray device, mask chamber, vacuum manifold and powder supply chamber.
- sai spray device also comprises means for electrically charging said particles.
- An apparatus for electrostatically and selectively coating ends of a metal container which comprises, in combination:
- A. a spray device comprising a spray chamber and having means for electrically charging and spraying particles of powder upon the end of a container positioned at the orifice of said chamber;
Abstract
Description
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US461696A US3918401A (en) | 1974-04-17 | 1974-04-17 | Apparatus for powder coating metal articles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US461696A US3918401A (en) | 1974-04-17 | 1974-04-17 | Apparatus for powder coating metal articles |
Publications (1)
Publication Number | Publication Date |
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US3918401A true US3918401A (en) | 1975-11-11 |
Family
ID=23833583
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US461696A Expired - Lifetime US3918401A (en) | 1974-04-17 | 1974-04-17 | Apparatus for powder coating metal articles |
Country Status (1)
Country | Link |
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US (1) | US3918401A (en) |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4170194A (en) * | 1976-11-15 | 1979-10-09 | Etlin Vladimir N | Apparatus for electrostatic deposition |
US4205621A (en) * | 1979-01-08 | 1980-06-03 | The Continental Group, Inc. | System for inside powder striping of welded food cans |
WO1980002236A1 (en) * | 1979-04-19 | 1980-10-30 | V Etlin | Means and method for electrostatically applying powder coating to an article |
US4233335A (en) * | 1979-03-06 | 1980-11-11 | Etlin Vladimir N | Electrostatic coating method |
US4472451A (en) * | 1983-01-21 | 1984-09-18 | Nordson Corporation | Mold masking apparatus and method |
US4749593A (en) * | 1985-02-21 | 1988-06-07 | Prazisions-Werkzeuge Ag | Coating arrangement and process for preventing deposits of a coating material |
US4770344A (en) * | 1986-12-08 | 1988-09-13 | Nordson Corporation | Powder spraying system |
EP0388419A1 (en) * | 1987-11-25 | 1990-09-26 | Ransburg Corporation | Twin velocity localized collection head |
USRE33394E (en) * | 1979-01-08 | 1990-10-23 | Continental Can Company, Inc. | System for inside powder striping of welded food cans |
US4987001A (en) * | 1989-02-09 | 1991-01-22 | Nordson Corporation | Method and apparatus for coating the interior surface of hollow, tubular articles |
US5454872A (en) * | 1993-07-28 | 1995-10-03 | Nordson Corporation | System for controlling and utilizing finer powder particles in a powder coating operation |
US5474609A (en) * | 1992-06-30 | 1995-12-12 | Nordson Corporation | Methods and apparatus for applying powder to workpieces |
US5520735A (en) * | 1992-06-30 | 1996-05-28 | Nordson Corporation | Nozzle assembly and system for applying powder to a workpiece |
US5520736A (en) * | 1995-01-18 | 1996-05-28 | Plastic Flamecoat Systems, Inc. | Vent block for flame spray coating system |
AT401389B (en) * | 1992-11-25 | 1996-08-26 | Gema Volstatic Ag | POWDER SPRAY COATING DEVICE |
WO2000033971A1 (en) * | 1998-12-10 | 2000-06-15 | Nordson Corporation | Powder spray apparatus for spraying exterior can bottoms |
US6444035B1 (en) * | 2000-01-28 | 2002-09-03 | Speedline Technologies, Inc. | Conveyorized vacuum injection system |
US6648970B1 (en) * | 2002-06-24 | 2003-11-18 | Nylok Corporation | Method and apparatus for applying a powdered resin to fasteners |
US20050048201A1 (en) * | 2003-08-29 | 2005-03-03 | Atofina Chemicals, Inc. | Gas supply system for a powder-fluidizing apparatus |
DE102004013153A1 (en) * | 2004-03-17 | 2005-10-06 | Itw Gema Ag | Conveying powder for spray coating objects comprises producing a metered powder stream from a metered flow amount of powder per time unit and conveying the whole flow amount of powder across the flow direction |
US11311898B2 (en) * | 2017-12-18 | 2022-04-26 | quickcoating GmbH | Device and installation for the electrostatic powder coating of objects |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2602418A (en) * | 1949-05-21 | 1952-07-08 | Jens A Paasche | Coating machine for applying dry particulate material |
US2770212A (en) * | 1952-03-26 | 1956-11-13 | Columbia Cable & Electric Corp | Continuous flow spraying system |
US3000752A (en) * | 1957-12-30 | 1961-09-19 | Armco Steel Corp | Coating metallic sheet or strip material with powdered annealing separator substances |
US3278451A (en) * | 1963-11-14 | 1966-10-11 | Westinghouse Electric Corp | Flexible smoke expansion chamber |
US3623854A (en) * | 1968-08-28 | 1971-11-30 | Owens Illinois Inc | Vapor treatment of containers with finish air barrier |
US3694242A (en) * | 1966-07-29 | 1972-09-26 | Sfb Spezial Filterbau M Ofner | Method for electrostatically coating the surfaces of articles with pulverulent materials |
US3714926A (en) * | 1970-12-09 | 1973-02-06 | Sfb Spezial Fillerbau Ofner M | Apparatus for electrostatically coating the surfaces of articles with pulverulent materials |
US3866567A (en) * | 1969-11-25 | 1975-02-18 | Gen Electric | Masking apparatus for use in coating an article of manufacture |
-
1974
- 1974-04-17 US US461696A patent/US3918401A/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2602418A (en) * | 1949-05-21 | 1952-07-08 | Jens A Paasche | Coating machine for applying dry particulate material |
US2770212A (en) * | 1952-03-26 | 1956-11-13 | Columbia Cable & Electric Corp | Continuous flow spraying system |
US3000752A (en) * | 1957-12-30 | 1961-09-19 | Armco Steel Corp | Coating metallic sheet or strip material with powdered annealing separator substances |
US3278451A (en) * | 1963-11-14 | 1966-10-11 | Westinghouse Electric Corp | Flexible smoke expansion chamber |
US3694242A (en) * | 1966-07-29 | 1972-09-26 | Sfb Spezial Filterbau M Ofner | Method for electrostatically coating the surfaces of articles with pulverulent materials |
US3623854A (en) * | 1968-08-28 | 1971-11-30 | Owens Illinois Inc | Vapor treatment of containers with finish air barrier |
US3866567A (en) * | 1969-11-25 | 1975-02-18 | Gen Electric | Masking apparatus for use in coating an article of manufacture |
US3714926A (en) * | 1970-12-09 | 1973-02-06 | Sfb Spezial Fillerbau Ofner M | Apparatus for electrostatically coating the surfaces of articles with pulverulent materials |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4170194A (en) * | 1976-11-15 | 1979-10-09 | Etlin Vladimir N | Apparatus for electrostatic deposition |
US4205621A (en) * | 1979-01-08 | 1980-06-03 | The Continental Group, Inc. | System for inside powder striping of welded food cans |
USRE33394E (en) * | 1979-01-08 | 1990-10-23 | Continental Can Company, Inc. | System for inside powder striping of welded food cans |
US4233335A (en) * | 1979-03-06 | 1980-11-11 | Etlin Vladimir N | Electrostatic coating method |
WO1980002236A1 (en) * | 1979-04-19 | 1980-10-30 | V Etlin | Means and method for electrostatically applying powder coating to an article |
US4472451A (en) * | 1983-01-21 | 1984-09-18 | Nordson Corporation | Mold masking apparatus and method |
US4749593A (en) * | 1985-02-21 | 1988-06-07 | Prazisions-Werkzeuge Ag | Coating arrangement and process for preventing deposits of a coating material |
US4770344A (en) * | 1986-12-08 | 1988-09-13 | Nordson Corporation | Powder spraying system |
EP0388419A1 (en) * | 1987-11-25 | 1990-09-26 | Ransburg Corporation | Twin velocity localized collection head |
EP0388419A4 (en) * | 1987-11-25 | 1991-07-17 | Ransburg Corporation | Twin velocity localized collection head |
US4987001A (en) * | 1989-02-09 | 1991-01-22 | Nordson Corporation | Method and apparatus for coating the interior surface of hollow, tubular articles |
US5173325A (en) * | 1989-02-09 | 1992-12-22 | Nordson Corporation | Method and apparatus for coating articles |
US5520735A (en) * | 1992-06-30 | 1996-05-28 | Nordson Corporation | Nozzle assembly and system for applying powder to a workpiece |
US5474609A (en) * | 1992-06-30 | 1995-12-12 | Nordson Corporation | Methods and apparatus for applying powder to workpieces |
US5612096A (en) * | 1992-06-30 | 1997-03-18 | Nordson Corporation | Methods and apparatus for applying powder to workpieces |
AT401389B (en) * | 1992-11-25 | 1996-08-26 | Gema Volstatic Ag | POWDER SPRAY COATING DEVICE |
US5454872A (en) * | 1993-07-28 | 1995-10-03 | Nordson Corporation | System for controlling and utilizing finer powder particles in a powder coating operation |
US5520736A (en) * | 1995-01-18 | 1996-05-28 | Plastic Flamecoat Systems, Inc. | Vent block for flame spray coating system |
WO2000033971A1 (en) * | 1998-12-10 | 2000-06-15 | Nordson Corporation | Powder spray apparatus for spraying exterior can bottoms |
US6444035B1 (en) * | 2000-01-28 | 2002-09-03 | Speedline Technologies, Inc. | Conveyorized vacuum injection system |
US20030010286A1 (en) * | 2000-01-28 | 2003-01-16 | Thomas Nowak | Conveyorized vacuum injection system |
US6648970B1 (en) * | 2002-06-24 | 2003-11-18 | Nylok Corporation | Method and apparatus for applying a powdered resin to fasteners |
US20040047987A1 (en) * | 2002-06-24 | 2004-03-11 | Dimaio Anthony | Method and apparatus for applying a powdered resin to fasteners |
US6759086B2 (en) * | 2002-06-24 | 2004-07-06 | Nylok Corporation | Method and apparatus for applying a powdered resin to fasteners |
US20050048201A1 (en) * | 2003-08-29 | 2005-03-03 | Atofina Chemicals, Inc. | Gas supply system for a powder-fluidizing apparatus |
US7361227B2 (en) * | 2003-08-29 | 2008-04-22 | Arkema, Inc. | Gas supply system for a powder-fluidizing apparatus |
DE102004013153A1 (en) * | 2004-03-17 | 2005-10-06 | Itw Gema Ag | Conveying powder for spray coating objects comprises producing a metered powder stream from a metered flow amount of powder per time unit and conveying the whole flow amount of powder across the flow direction |
US11311898B2 (en) * | 2017-12-18 | 2022-04-26 | quickcoating GmbH | Device and installation for the electrostatic powder coating of objects |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: AMERICAN CAN PACKAGING INC., AMERICAN LANE, GREENW Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERICAN CAN COMPANY, A NJ CORP.;REEL/FRAME:004835/0338 Effective date: 19861107 Owner name: AMERICAN NATIONAL CAN COMPANY Free format text: MERGER;ASSIGNORS:AMERICAN CAN PACKAGING INC.;TRAFALGAR INDUSTRIES, INC. (MERGED INTO);NATIONAL CAN CORPORATION (CHANGED TO);REEL/FRAME:004835/0354 Effective date: 19870430 Owner name: AMERICAN CAN PACKAGING INC., CONNECTICUT Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AMERICAN CAN COMPANY, A NJ CORP.;REEL/FRAME:004835/0338 Effective date: 19861107 Owner name: AMERICAN NATIONAL CAN COMPANY, STATELESS Free format text: MERGER;ASSIGNORS:AMERICAN CAN PACKAGING INC.;TRAFALGAR INDUSTRIES, INC. (MERGED INTO);NATIONAL CAN CORPORATION (CHANGED TO);REEL/FRAME:004835/0354 Effective date: 19870430 |