Abstract:
A method for an electrostatic abluminal coating of a stent crimped on a balloon catheter is disclosed. In one form of the method, a stent-balloon assembly is formed by crimping or otherwise mounting a stent on the balloon of a catheter. A conductive wire is thereafter threaded through the lumen of the stent-balloon assembly and a charge is applied thereto. The stent may be grounded or, alternatively, be potentiated with a charge opposite to that of the conductive wire. An electrostatic spray with the same charge as that of the conductive wire may then be applied to the stent-balloon assembly. In this manner, a stent-balloon assembly which is coated on the abluminal surface but substantially or completely free of coating on the luminal surface and the outside surface of the exposed portions of the balloon is realized.
Abstract:
A nozzle is provided for use in a dynamic electrostatic air filter, in which the nozzle includes an internal electrode (88) that charges a semiconductive liquid, and includes an external electrode (90) that assists in breaking the liquid droplets in a predetermined direction. Banks of multiple nozzles are also disclosed, which are separated by a charged "separation electrode" to prevent interference with spray patterns between adjacent banks. An electrostatic fountain is also disclosed which discharges a fragrance, or an inhalable medicine.
Abstract:
The invention concerns a method for coating an object with a film obtained by melting a thin powder layer which consists in: (a) providing an electrically charged powder, said powder having been charged by any particular means; (b) bringing the object close to the powder or contacting the object with the powder, the object being connected to a zero potential or sufficient to coat it with powder; (c) then placing the powder-coated object in an oven at an adequate temperature until the coating film is obtained by melting the powder, the oven comprising electrodes brought to a high electrical potential so as to produce a corona effect which compensates relaxation of the charge of the particles during heating. Thus, the charge of the particles is maintained and hence they remain on the object and can thereby form the film by melting. The invention also concerns the equipment for implementing the method.
Abstract:
Disclosed is an apparatus and method for electrostatically coating a human (11) with a coating composition. In one embodiment, the present invention includes an enclosure (3); a mount (6) positioned on the enclosure; an electrostatic nozzle (7) connected to the mount, the electrostatic nozzle for passing the coating composition; and a grounding connection (4) positioned inside the enclosure, the grounding connection capable of electrically grounding the human; wherein the coating composition passed through the electrostatic nozzle is depositable upon the human. Furthermore, in another embodiment, the enclosure includes a first wall wherein the mount is positioned on the first wall; and a second wall positioned substantially opposite the first wall, the second wall including a portion curved about an axis.
Abstract:
A powder coating device capable of improving a powder paint utilization efficiency, comprising a booth, a powder paint fluidized bed formed on the bottom of the booth and opened upwards, a paint spraying means for extracting powder paint from the fluidized bed and spraying it into the booth from above the booth, a holding means for holding an unpainted article inside the booth, an electrode disposed inside the booth facing the unpainted article held by the holding means, a power source for applying a high voltage between the electrode and the unpainted article and a circulating flow forming means for forming a circulating flow of powder paint inside the booth.
Abstract:
The invention provides apparatus for electrostatically coating a pharmaceutical tablet core with powdered coating material. The apparatus comprises a first rotary drum (12) on which a core is held in electrical isolation from its surroundings but at a potential difference to earth by an electrode which contacts the core. The core is carried past a coating station B at which particles of powder having an opposite potential difference to earth are held in a tray (18). The surface of the drum is held at the same potential difference to earth as the powder particles. The powder is attracted to the core, and not to the drum, coating the exposed surface of the core. The drum carries the coated core past a fusing station C at which a heater fuses the powder to form a continuous film coating. The core is then turned and transferred onto a second drum (12') where the other surface is coated in the same way.
Abstract:
본 발명은 기판에 폴리머 박막의 형성에 관한 것이다. 고형 폴리머 레지스트를 작은 입자의 에어로졸로 변형시키고, 상기 입자를 기판에 정전기적으로 충전하여 증착시키고, 상기 입자를 연속적인 층으로 흐르게 하기 위한 장치가 설명된다. 연무화와 양립가능한 것과 같은 저점도 액체를 이루도록 레지스트를 가열하여 고형 레지스트를 작은 입자의 에어로졸로 변형시키고 제트 기술이나 충격 연무화 및 에어로졸 입자 분립을 적용하여 상기 에어로졸을 형성하기 위한 장치가 더 설명된다. 이온화된 가스를 이용하여 상기 에어로졸 입자에 충전을 부여하고 충전 장치의 연속성을 이용하여 상기 기판으로 충전된 입자의 흐름을 배향하는 전기장을 형성하기 위한 방법이 더 설명된다. 충전 장치의 연속성 및 이와 관련된 장치는 상기 에어로졸 입자에 대한 높은 포집 효율을 발생시킨다.