WO2001085357A1 - Method and apparatus for the horizontal painting of wood products - Google Patents

Method and apparatus for the horizontal painting of wood products Download PDF

Info

Publication number
WO2001085357A1
WO2001085357A1 PCT/EP2000/008740 EP0008740W WO0185357A1 WO 2001085357 A1 WO2001085357 A1 WO 2001085357A1 EP 0008740 W EP0008740 W EP 0008740W WO 0185357 A1 WO0185357 A1 WO 0185357A1
Authority
WO
WIPO (PCT)
Prior art keywords
products
conveyor
paint
painting
painted
Prior art date
Application number
PCT/EP2000/008740
Other languages
French (fr)
Inventor
Bruno Baroncini
Silver Santandrea
Original Assignee
Cefla Soc. Coop. A R.L.
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 ITBO2000A000278 priority Critical
Priority to IT2000BO000278A priority patent/ITBO20000278A1/en
Application filed by Cefla Soc. Coop. A R.L. filed Critical Cefla Soc. Coop. A R.L.
Publication of WO2001085357A1 publication Critical patent/WO2001085357A1/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08Plant for applying liquids or other fluent materials to objects
    • B05B5/087Arrangements of electrodes, e.g. of charging, shielding, collecting electrodes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/10Arrangements for collecting, re-using or eliminating excess spraying material the excess material being particulate
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B16/00Spray booths
    • B05B16/90Spray booths comprising conveying means for moving objects or other work to be sprayed in and out of the booth, e.g. through the booth
    • B05B16/95Spray booths comprising conveying means for moving objects or other work to be sprayed in and out of the booth, e.g. through the booth the objects or other work to be sprayed lying on, or being held above the conveying means, i.e. not hanging from the conveying means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08Plant for applying liquids or other fluent materials to objects
    • B05B5/082Plant for applying liquids or other fluent materials to objects characterised by means for supporting, holding or conveying the objects
    • B05B5/084Plant for applying liquids or other fluent materials to objects characterised by means for supporting, holding or conveying the objects the objects lying on, or being supported above conveying means, e.g. conveyor belts
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse 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

Abstract

The wood products (P) to be painted are deposited on a horizontal and electrically conducting conveyor (1) which is connected to earth and which introduces the said products into a chamber (5) where spraying means (11, 11') operate, spraying a powdered paint which is electrostatically charged to a potential such as to be uniformly attracted by the visible surface of the said products. Means (14, 14') are provided for cleaning the lower section of the said conveyor, in order to collect and recycle the powdered paint which remains attached to the said conveyor. Finally, the painted products are transferred into an IR and/or UV-ray treatment oven (15, 16) for plasticization and hardening of the paint. Optional means (17) perform removal of any traces of powdered paint from the bottom side of the products, before the latter are introduced into the said oven (15, 16).

Description

TITLE: "Method and apparatus for the horizontal painting of wood products"
DESCRIPTION
Painting, on an industrial level, of wood products or wood by-products is currently performed mostly using liquid and solvent paints which, by means of guns, are sprayed onto the said products introduced into chambers kept under a slight vacuum with respect to the external environment so as to prevent the escape of the gaseous compounds contained in the paint products. According to the currently most widespread technique for industrial painting using liquid paints, the products are placed on a horizontal conveyor which introduces them into the painting chamber where only the visible surfaces of the said products are painted. If the products must be painted over their whole surface, the said products are passed through the painting chamber twice. According to a further painting technique, the products are hung vertically from conveying means so that they may be painted completely with a single pass through the painting chamber. Each of the said aforementioned techniques has advantages and defects. However, a common feature of both techniques is the difficulty and complexity of recovering the surplus paint material sprayed inside the chambers and not retained by the products as well as the problems associated with the use of a solvent and disposal of its gaseous compounds which are sucked in by the painting chamber and which are generally treated by disposal devices, including post-combustion systems.
The invention aims to overcome these and other drawbacks of the known art using the following proposed solution. For the industrial painting of mainly metal products it is currently known to use paints in the form of powders which are electrostatically charged and are sprayed in atomized form onto the products to be painted, usually hung from a conveying means, by means of which the said products are kept at an electric potential such as to attract the powdered paint which is thus able to cover uniformly the said products. After the said aforementioned painting step, the products pass into an oven which performs plasticization and hardening of the paint by the application of heat and/or, where necessary, ultraviolet radiation which is particularly suitable when the products cannot fully withstand the first type of physical catalysis where relatively high temperatures are reached. This painting technique has the advantage that it does not use solvents and allows easy recovery by means of suction and easy recycling of the surplus powdered paint dispersed inside the painting chamber.
Powder painting was recently attempted with success on flat products of MDF (medium density fibreboard) which are vertically hung from a conveying system and are made superficially conductive beforehand by means of a cryogenic treatment or initial spraying of conductive liquids or introduction of conductive components into the conglomerate mass, prior to the pressing step, or by means of wetting of the support. After the step involving application of the powdered paint, the MDF products are passed into an oven for plasticization and hardening of the said paint by means of a heat treatment at 140°C and subsequent cooling. Similar experiments have also been attempted on flat wood products. This technique is not applicable industrially within the sector of mainly flat wood products with small dimensions since:
- it would be necessary to provide holes on the products to be painted or parts which are fixed to the said products and would then have to be removed;
- the products would have to be loaded and unloaded manually onto and from overhead conveying means, resulting in a considerable increase in the production costs of small-size products;
- in the zone where connection to the overhead conveying means is performed, painting of the product would sometimes be imprecise and require touching-up or could result in production rejects. The invention aims to overcome the drawbacks of the known art using a method and an apparatus which allow the advantages of traditional painting of wood products placed on a horizontal conveyor to be combined with the advantages of electrostatic painting. Wood products which have undergone a medium degree of seasoning have a tendency to charge electrostatically without the prior treatment required for MDF products. It is understood, however, that the wood products may, if necessary, be subject to one of the said aforementioned prior treatments so that they can be made superficially electro-conductive. The products to be painted are deposited on the upper section of a conveyor which is made, for example, using a suitable electrically conductive elastomer resting on a metal surface kept at a suitable electric potential, for example connected to earth, so that the said products are at this same potential. The conveyor transports the products inside a painting chamber which is kept under a slight vacuum with respect to the external environment and inside which special means spray, onto the visible surface of the said products, a powdered paint charged electrostatically to a potential such that it may be attracted uniformly by the visible surface of the product and by the upper section of the conveyor. The paint used is preferably of the UV (ultraviolet) ray catalysis type. The painted products emerge from the painting chamber on the conveyor and are transferred from the said conveyor to a following conveying means which introduces them into the oven for plasticization and catalysis of the paint using preferably a combination of IR (infrared) radiation and UV radiation. The bottom surface of the product which leaves the painting unit conveyor is not soiled with paint since it is protected from physical contact or from coming into the immediate vicinity of the upper section of the said conveyor. If required, however, prior to transfer to the paint-plasticization and catalysis oven, a step involving cleaning of the bottom side of the products in order to remove any traces of powdered paint may be envisaged. Special suction means are provided in order to clean the lower section of the painting unit conveyor so that it returns in a clean condition to the upper level in order to receive the new products to be painted. Finally, special means are provided in order to clean and maintain the cleanliness of the painting chamber. It is obvious how, as a result of the simple but ingenious combination of the principles described above, it is possible to obtain a method and an apparatus for the industrial painting of wood products or its by-products which are able to achieve the following advantages:
- the products do not require preparative operations; - the products may be loaded and unloaded automatically into and from the painting plant;
- the products may be painted only on the visible surfaces, as is required for certain applications, for example the construction of furniture, skirting boards and profiled parts; - the paint of the products has an excellent finish;
- there is no wastage of painting material;
- the surplus paint which remains in the painting chamber and which remains on the conveyor belt may be easily recovered and immediately recycled in its entirety. Further characteristic features of the invention and the advantages arising therefrom will emerge more clearly from the following description of an embodiment illustrated by way of a non-limiting example in the figures of the attached sheet of drawings, in which:
- Fig. 1 illustrates schematically a perspective view of a painting unit according to the invention;
- Fig. 2 illustrates a partially sectioned side view of the painting unit according to Figure 1 , operationally connected to the means for supplying the products to be painted and to the paint-hardening oven.
In the figures, 1 denotes a horizontal belt or band conveyor driven at its ends on horizontal and parallel rollers 2, 102, at least one of which is connected to driving means, not shown, which drive the upper section of this device for example in the direction indicated by the arrow F, for example with a continuous movement. The conveyor belt 1 is made with an electrically conductive material, for example an electrically conductive elastomer. The upper section of the conveyor 1 rests with its bottom side on a metal surface 3 or on equivalent means, such as metal rollers for example, which secure the said section in a flat and horizontal position and which keep it at a predefined electrical potential, for example at zero potential owing to the connection to earth, as indicated by 4.
At least the upper section 101 of the conveyor 1 passes, under optimum sealing conditions, through a chamber 5 provided at the opposite entry and exit ends of the said conveyor with openings 6, 6' which are wide enough to allow the products to be painted to pass through freely. The chamber 5 is made, for example, using electrically insulating material so as not to attract the powdered paint and has a form suitable for easy periodic cleaning of the internal surface using automatic or manual means, not shown. According to another embodiment, the chamber 5 may be designed so as to assume, at least with its internal surface, an electric potential able to repel the powdered paints. Finally, the chamber 5 is connected to suction means which are schematically indicated by 7,7' and which keep said chamber internally under a slight vacuum with respect to the external environment so that traces of powdered paint are unable to escape from the entry and exit openings 6, 6'. The suction means 7, 7' are connected to means, not shown, for recovery of the sucked- up powdered paints.
8, 8' indicate profiled parts which preferably cover, over a portion of suitable width, the edges of the upper section 101 of the conveyor 1 so that the latter are not affected by the powdered paints and so that the said conveyor may then be more easily cleaned, as usually is envisaged in horizontal painting machines using liquid paints.
The products P to be painted are fed automatically onto the upper section of the conveyor 1 by a feed conveyor 9. Before entering the painting chamber 5, it is preferably envisaged that the shape and size of the said products are detected by an opto-electronic unit 10 of the known type, which controls operation of the painting means located inside the chamber 5. Inside this chamber, bars 11 , 11 ,' for spraying the powdered paints are in fact located after the entry opening 6 and before the exit opening 6', with the possibility of adjustment of the distance from the conveyor 1 and transversely with respect to the said conveyor, said bars being directed so as to be able to spray uniformly also the vertical or inclined walls of the products P, whether they be directed transversely or parallel to the direction of travel of the said products. The bars 11 , 11' may be made to perform an alternating movement transverse to the direction of travel of the products P, as indicated by the arrows F11. It is understood that, depending on the shape of the products to be painted, the paint-spraying means may be more than two in number and may be located with a suitable inclination also along the side of the travel path of the said products, all of which in a way which is obvious to and may be easily realized by persons skilled in the art. The paint-spraying means will be controlled by the opto-electronic unit 10 which will activate them when the product P passes by and may also control modification of the direction and/or position thereof, in relation to the shape of the said product.
The paint-spraying bars 11 , 11' are connected to distribution devices 12, 12' located outside the chamber 5 and in turn connected to the unit 13 supplying and electrostatically charging the powdered paint to a potential such that the said powder may be attracted by the upper section of the conveyor 1 and by the products P which rest on the latter and which pass through the chamber 5.
As they pass through the chamber 5, the products P are uniformly lined with powdered paint on their visible surfaces, while their bottom surfaces remain clean. It is for this reason that, immediately after the product lined with powdered paint has left the conveyor 1 , the lower section 201 of the said conveyor is cleaned by first cleaning means 14, for example operating by means of scraping and suction. Further optional cleaning means 14' may also be provided at the other end of the lower section 201 of the conveyor 1 , so as to ensure that the said conveyor is completely clean when the upper level receives the products to be painted from the feed conveyor 9.
The products P lined with the layer of paint then pass onto a conveyor 15 which conveys them into the oven 16 containing preferably first operating means (not shown), emitting IR radiation at a temperature and for a duration such as to cause plasticization of the powdered paint and at the same time such as not to deform the painted product, as well as second operating means (not shown) for emitting UV (ultraviolet) radiation for ensuring catalysis and hardening of the paint. The final stage of the oven 16 also comprises special means, also not shown, for cooling the painted products. Before entering the oven 16, for example during transfer from the conveyor 1 to the conveyor 15, special means 17, for example of the rotating roller type, may be provided in order to clean the bottom side of the products P and remove any traces of powdered paint.

Claims

1 ) Method for the horizontal painting of mainly flat wood products or wood by-products, characterized by the succession of following working steps:
- optional surface treatment of the products in order to make them electrically conductive;
- placing the products on a horizontal conveying surface by means of which the said products are brought to a predefined electric potential, for example zero potential, with connection to earth; the products are then placed on the horizontal conveying surface so as to be protected against painting on the side directed towards the said conveying surface;
- spraying the visible surface of the products with a powdered paint supplied with spraying systems which electrostatically charge it to a potential such that the said paint is deposited uniformly and remains attracted over the whole visible surface of the product; - plasticization and catalysis of the powdered paint by means of IR and/or UV radiation treatment and final cooling.
2) Method according to Claim 1 , characterized in that it comprises an optional step involving cleaning of the bottom surface of the products after the step involving paint-spraying, in order to remove any traces of powdered paint before the said products undergo the final step involving hardening by means of IR and/or UV- ray treatment.
3) Method according to the preceding claims, in which the final IR-ray treatment is performed at a temperature and for a duration such as to avoid physical deformation of the painted products. 4) Apparatus for the horizontal painting of mainly flat wood products or wood by-products, in particular for implementing the method according to the preceding claims, characterized in that it comprises:
- a horizontal conveyor (1) which is made of electrically conductive material and which, with its upper section (101 ), travels continuously in one direction (F) and on the front end of which the products (P) to be painted are deposited; - means for bringing the said conveyor (1), or at least the upper section thereof, to a predefined electric potential, for example zero potential with connection to earth;
- a chamber (5) closed at the bottom by an intermediate portion of the upper section (101 ) of the said conveyor (1 ) and provided at its opposite ends with entry and exit openings (6, 6') for the products yet to be painted and products already painted;
- means (7,7') for sucking air from the said painting chamber (5) in order to prevent the escape of particles of powdered paint from the openings (6, 6') thereof and from the conveyor connection zones;
- spraying means (11 , 11') located inside the said chamber and connected to complementary external means (12, 12', 13), for spraying onto the visible surface of the products passing inside the said chamber a powdered paint electrostatically charged to a potential such that it may be uniformly attracted by the visible surface of the said products (P);
- means (14, 14') for removing from the lower section (201 ) of the said conveyor (1 ) the powdered paint which is supplied by the said spraying means (11 , 11') and which has not struck the products to be painted;
- a conveyor (15) which collects the products leaving the conveyor (1 ) of the painting unit and introduces them into an oven (16) for plasticization and hardening of the paint with IR and/or UV radiation.
5) Apparatus according to Claim 4, in which the spraying means (11 , 11') which spray the powdered paint onto the products (P) which pass inside the painting chamber (5) are made to perform a movement (F11) such as to ensure uniform dispersion of the paint supplied onto the said products.
6) Apparatus according to the preceding claims, in which opto-electronic means (10) are provided upstream of the painting chamber (5) in order to detect the dimensions and shape of the products to be painted and control activation, deactivation and if necessary also the movement of the means (11 , 11') for spraying the powdered paint. 7) Apparatus according to the preceding claims, characterized in that the conveyor (1) on which the products to be painted rest is made with an electrically conductive elastomer and its upper section (101) rests on a fixed electrically conductive surface (3) connected to earth (4). 8) Apparatus according to the preceding claims, in which special protective elements (8, 8') are provided in order to cover the longitudinal edges of the upper section (101 ) of the conveyor (1 ) which passes inside the painting chamber (5), in order to prevent the. powdered paint being deposited on said edges and facilitate the following step involving cleaning of the lower section of the said conveyor.
9) Apparatus according to the preceding claims, in which the painting chamber (5) is made with a material and/or using techniques such as to prevent the deposition of powdered paint thereon.
10) Apparatus according to the preceding claims, characterized in that it comprises means for periodic cleaning of the internal surfaces of the painting chamber (5).
11) Apparatus according to the preceding claims, characterized in that it comprises means (17) for cleaning the bottom surface of the products leaving the conveyor (1) of the painting unit, so as to remove any traces of powdered paint before transfer of the said products into the paint-hardening oven (16).
PCT/EP2000/008740 2000-05-12 2000-09-07 Method and apparatus for the horizontal painting of wood products WO2001085357A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITBO2000A000278 2000-05-12
IT2000BO000278A ITBO20000278A1 (en) 2000-05-12 2000-05-12 METHOD AND APPARATUS FOR THE HORIZONTAL PAINTING OF WOODEN OR WOOD DERIVATED ITEMS AND OF PREVALENT FLAT EXTENSION.

Publications (1)

Publication Number Publication Date
WO2001085357A1 true WO2001085357A1 (en) 2001-11-15

Family

ID=11438472

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/008740 WO2001085357A1 (en) 2000-05-12 2000-09-07 Method and apparatus for the horizontal painting of wood products

Country Status (2)

Country Link
IT (1) ITBO20000278A1 (en)
WO (1) WO2001085357A1 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003070384A1 (en) * 2002-02-25 2003-08-28 Delle Vedove Levigatrici Spa Vacuum painting head and relative painting method
EP1388373A2 (en) 2002-08-07 2004-02-11 CEFLA Soc. Coop. a r.l. Equipment for preparing for electrostatic painting three-dimensional articles with a predominantly flat extension
EP1712294A1 (en) * 2005-04-13 2006-10-18 ABB Service S.r.l Method for painting an object, and corresponding paint plant
EP1995552A1 (en) * 2007-04-18 2008-11-26 Cefla Societa' Cooperativa Device for detecting the transit or characteristics of dimensions of panels or other basically flat parts placed on a conveyor line, and for controlling subsequent processing means
EP1994990A1 (en) 2007-04-18 2008-11-26 Gerhard Koch Maschinenfabrik GmbH & Co. KG Method and device for applying a sealing coat
CN102218381A (en) * 2010-04-16 2011-10-19 深圳市佳士科技股份有限公司 Full-automatic paint spraying machine and paint spraying technology thereof
EP2756889A1 (en) * 2013-01-18 2014-07-23 Venjakob Maschinenbau GmbH & Co. KG Optimisation of a device for painting work pieces
ITBO20130182A1 (en) * 2013-04-22 2014-10-23 Cefla Coop METHOD AND EQUIPMENT FOR THE APPLICATION OF PAINTS ON MANUFACTURED PAINTED EXTENSIONS
CN104759368A (en) * 2015-03-18 2015-07-08 宁波双翼能源科技有限公司 Electrostatic spray coating system
CN105880120A (en) * 2014-12-24 2016-08-24 天津江水建筑工程有限公司 Sand distributing and recycling device for building composite boards
CN107350117A (en) * 2017-07-24 2017-11-17 佛山市正略信息科技有限公司 A kind of safe and efficient spray equipment of cooking-fume exhausting hood housing
CN108296486A (en) * 2017-12-13 2018-07-20 浙江灿根智能科技有限公司 Steel-based copper alloy increases material technique
CN108355874A (en) * 2018-05-02 2018-08-03 东莞市迪沙机电有限公司 Wooden workpiece powder coating device, Powder Coating System and powder coating process
CN111957492A (en) * 2020-09-08 2020-11-20 湖南连心科技有限公司 Powder coating spraying production equipment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20010168A1 (en) 2001-03-22 2002-09-23 Cefla Coop THREE-DIMENSIONAL AND PR

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4144837A (en) * 1976-10-05 1979-03-20 Carrier Drysys Limited Coating apparatus
DE3516826A1 (en) * 1985-05-10 1986-11-13 Heinzel Eberhard Dipl Ing Fh Longitudinally movable cleaning device in the interior of a coating booth
US4836137A (en) * 1986-09-13 1989-06-06 Kopperschmidt-Mueller Gmbh & Co. Kg Apparatus for electrostatically spray coating workpieces with air ionizing neutralizing device
US4901666A (en) * 1987-06-24 1990-02-20 Onoda Cement Company, Ltd. Electrostatic powder coating device
US5240504A (en) * 1991-07-03 1993-08-31 Russell Mazakas Spray booth liner
DE4318273A1 (en) * 1993-06-03 1994-12-08 Dietrich Gunter Apparatus for paint coating
EP0858841A2 (en) * 1996-12-23 1998-08-19 Daniel Seiler Powder coating unit, conveyor for such a unit and powder coating installation with the same
US5800615A (en) * 1993-05-07 1998-09-01 Nordson Corporation Flat line powder coating system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4144837A (en) * 1976-10-05 1979-03-20 Carrier Drysys Limited Coating apparatus
DE3516826A1 (en) * 1985-05-10 1986-11-13 Heinzel Eberhard Dipl Ing Fh Longitudinally movable cleaning device in the interior of a coating booth
US4836137A (en) * 1986-09-13 1989-06-06 Kopperschmidt-Mueller Gmbh & Co. Kg Apparatus for electrostatically spray coating workpieces with air ionizing neutralizing device
US4901666A (en) * 1987-06-24 1990-02-20 Onoda Cement Company, Ltd. Electrostatic powder coating device
US5240504A (en) * 1991-07-03 1993-08-31 Russell Mazakas Spray booth liner
US5800615A (en) * 1993-05-07 1998-09-01 Nordson Corporation Flat line powder coating system
DE4318273A1 (en) * 1993-06-03 1994-12-08 Dietrich Gunter Apparatus for paint coating
EP0858841A2 (en) * 1996-12-23 1998-08-19 Daniel Seiler Powder coating unit, conveyor for such a unit and powder coating installation with the same

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7022189B2 (en) 2002-02-25 2006-04-04 Delle Vedove Levigatrici Spa Vacuum painting head and relative painting method
WO2003070384A1 (en) * 2002-02-25 2003-08-28 Delle Vedove Levigatrici Spa Vacuum painting head and relative painting method
EP1388373A2 (en) 2002-08-07 2004-02-11 CEFLA Soc. Coop. a r.l. Equipment for preparing for electrostatic painting three-dimensional articles with a predominantly flat extension
US7051670B2 (en) 2002-08-07 2006-05-30 Cefla Soc. Coop. A.R.L. Equipment for preparing for electrostatic painting three-dimensional articles with a predominantly flat extension
EP1712294A1 (en) * 2005-04-13 2006-10-18 ABB Service S.r.l Method for painting an object, and corresponding paint plant
EP1994990A1 (en) 2007-04-18 2008-11-26 Gerhard Koch Maschinenfabrik GmbH & Co. KG Method and device for applying a sealing coat
EP1995552A1 (en) * 2007-04-18 2008-11-26 Cefla Societa' Cooperativa Device for detecting the transit or characteristics of dimensions of panels or other basically flat parts placed on a conveyor line, and for controlling subsequent processing means
CN102218381A (en) * 2010-04-16 2011-10-19 深圳市佳士科技股份有限公司 Full-automatic paint spraying machine and paint spraying technology thereof
US9272298B2 (en) 2013-01-18 2016-03-01 Venjakob Maschinenbrau GmbH & KG Optimization of a device for coating workpieces
EP2756889A1 (en) * 2013-01-18 2014-07-23 Venjakob Maschinenbau GmbH & Co. KG Optimisation of a device for painting work pieces
ITBO20130182A1 (en) * 2013-04-22 2014-10-23 Cefla Coop METHOD AND EQUIPMENT FOR THE APPLICATION OF PAINTS ON MANUFACTURED PAINTED EXTENSIONS
US10583456B2 (en) 2013-04-22 2020-03-10 Cefla Societa' Cooperativa Method and apparatus for applying paint on basically flat parts
EP2808091A1 (en) 2013-04-22 2014-12-03 Cefla Societa' Cooperativa Method and apparatus for applying paint on basically flat parts
CN105880120A (en) * 2014-12-24 2016-08-24 天津江水建筑工程有限公司 Sand distributing and recycling device for building composite boards
CN104759368A (en) * 2015-03-18 2015-07-08 宁波双翼能源科技有限公司 Electrostatic spray coating system
CN107350117A (en) * 2017-07-24 2017-11-17 佛山市正略信息科技有限公司 A kind of safe and efficient spray equipment of cooking-fume exhausting hood housing
CN108296486A (en) * 2017-12-13 2018-07-20 浙江灿根智能科技有限公司 Steel-based copper alloy increases material technique
CN108355874A (en) * 2018-05-02 2018-08-03 东莞市迪沙机电有限公司 Wooden workpiece powder coating device, Powder Coating System and powder coating process
CN108355874B (en) * 2018-05-02 2019-07-16 东莞市迪沙机电有限公司 Wooden workpiece powder coating device, Powder Coating System and powder coating process
CN111957492A (en) * 2020-09-08 2020-11-20 湖南连心科技有限公司 Powder coating spraying production equipment

Also Published As

Publication number Publication date
ITBO20000278A1 (en) 2001-11-12

Similar Documents

Publication Publication Date Title
WO2001085357A1 (en) Method and apparatus for the horizontal painting of wood products
US4901666A (en) Electrostatic powder coating device
US3439649A (en) Electrostatic coating apparatus
EP0244066A2 (en) Portable powder spray apparatus
EP0445556B1 (en) Process for coating a metal strip with plastic powder
US4715314A (en) Electrostatic powder coating installation
US5221347A (en) Apparatus for coating both sides of plate-like substrates
US4888200A (en) Process and machine for electrostatic coating
JP2013514160A (en) Method and apparatus for electrostatic separation of overspray with absorbent
US3926103A (en) Recovery system for spraying apparatus
BRPI0808624B1 (en) Method for application of melting adhesive dust on a non metallic surface, system for application of melting adhesive dust on a non metallic surface
US5620518A (en) Powder coating system
CA2188669C (en) System for cleaning fixtures utilized in spray painting
US20070039632A1 (en) Apparatus and methods for in-line cleaning of contaminant-coated hangers
US5000985A (en) Method of powder coating
US4563977A (en) Electrostatic coating plant
US20180065135A1 (en) Spray applicating line and assembly for producing a coated part and including multiple overspray and recapture/recycle configurations
EP1243340B1 (en) Machine for the horizontal painting of products
CZ286956B6 (en) Device for applying paint layer to objects
EP0405164B1 (en) Installation and method for making coated flat pieces, in particular flat metal sheets
JP4021024B2 (en) Electrostatic powder coating apparatus and method
US11051521B2 (en) Method and device for applying a consumable treating liquid to an individual meat product, such as a sausage
US4204497A (en) Electrostatic coating apparatus having conveyor belt, fluidizing and electrostatic means for recirculation of coating particles
GB2286515A (en) Method and apparatus for flavouring a food product
US5036792A (en) Apparatus for controlling emission, and recovery, of solvents

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase