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1. WO2000033971 - POWDER SPRAY APPARATUS FOR SPRAYING EXTERIOR CAN BOTTOMS

Publication Number WO/2000/033971
Publication Date 15.06.2000
International Application No. PCT/US1999/028042
International Filing Date 24.11.1999
Chapter 2 Demand Filed 01.06.2000
IPC
B05B 15/04 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
15Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
04Control of spray area, e.g. masking, side shields; Means for collection or re-use of excess material
B05B 15/12 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
15Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
12Spray booths
CPC
B05B 14/10
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
14Arrangements for collecting, re-using or eliminating excess spraying material
10the excess material being particulate
B05B 16/95
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
16Spray booths
90comprising conveying means for moving objects or other work to be sprayed in and out of the booth, e.g. through the booth
95the objects or other work to be sprayed lying on, or being held above the conveying means, i.e. not hanging from the conveying means
Y02P 70/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
70Climate change mitigation technologies in the production process for final industrial or consumer products
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
Applicants
  • NORDSON CORPORATION [US]/[US] (AllExceptUS)
  • MULDER, Douglas, C. [US]/[US] (UsOnly)
  • HOLLSTEIN, Thomas, E. [US]/[US] (UsOnly)
  • WILSON, Timothy, E. [US]/[US] (UsOnly)
Inventors
  • MULDER, Douglas, C.
  • HOLLSTEIN, Thomas, E.
  • WILSON, Timothy, E.
Agents
  • GUTT, Ronald, D.
Priority Data
09/208,67810.12.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) POWDER SPRAY APPARATUS FOR SPRAYING EXTERIOR CAN BOTTOMS
(FR) APPAREIL DE PULVERISATION DE POUDRE SUR L'EXTERIEUR DE FOND DE CANETTE
Abstract
(EN)
Apparatus for spraying powder onto an exterior surface of a can bottom (A) includes a supply of powder (14), a powder spray gun (12) that receives powder from the supply and produces a powder spray directed towards a can bottom, and a control device (40) that shapes the powder spray and collects overspray. A powder collection system (20) is used for recycling substantially all of the powder spray back to the powder supply, thereby increasing the production of fines. In a first embodiment, the control device is realized in the form of an airflow amplifier that draws a vacuum to produce a substantial air movement in the region of the can bottom. This air movement constrains the powder spray to flow within a relatively well-defined envelope. Powder overspray is collected by the amplifier and blown into a powder collection system. In a further embodiment, a deflector sleeve is provided about the gun nozzle to direct secondary powder fines into a well defined more homogenous spray pattern.
(FR)
L'invention concerne un appareil de pulvérisation de poudre sur l'extérieur d'un fond de canette (A), qui comprend une source de poudre (14) et un pistolet de pulvérisation (12) recevant la poudre de cette source, et qui pulvérise ladite poudre vers un fond de canette. L'appareil comprend en outre un dispositif de contrôle (40) qui met en forme la pulvérisation et recueille les excédents de pulvérisation. Un système de collecte de poudre (20) est utilisé pour recycler sensiblement toute la poudre pulvérisée vers la source, ce qui augmente la production de fines. Selon une variante, le dispositif de contrôle se présente sous la forme d'un amplificateur de flux d'air qui établit un vide pour produire un mouvement d'air substantiel dans la zone du fond de canette. Ce mouvement limite la pulvérisation dans un écoulement correspondant à une enveloppe bien définie. Les excédents de pulvérisation sont recueillis par l'amplificateur et soufflés vers un système de collecte de poudre. Selon une autre variante, un manchon déflecteur est prévu autour de la buse du pulvérisateur, pour orienter des fines de poudre secondaires selon un schéma de pulvérisation homogène bien défini.
Also published as
US09857824
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