Abstract:
A method for producing semiconductor or metal particles comprises the steps of: storing a semiconductor or metal melt in a crucible having a nozzle; supplying a gas comprising at least one selected from the group consisting of He, Ne, Ar, Kr and Xe into the crucible such that the pressure of the supplied gas in a space over the melt in the crucible is higher than the pressure of a gaseous phase into which the melt is dropped; dropping the melt from the nozzle into the gaseous phase by the pressure of the gas to form liquid particles; and solidifying the liquid particles in the gaseous phase to obtain semiconductor or metal particles. The crucible comprises at least one selected from the group consisting of hexagonal BN, cubic BN, Si3N4, TiB2, ZrB2, zirconia and stabilized zirconia at least near the nozzle. Alternatively, the crucible comprises quartz glass at least near the nozzle and has a heat-resistant support member for suppressing deformation caused by a decrease in viscosity of the quartz glass at high temperatures.
Abstract:
A booth for coating objects with powder, in particular for powder painting, comprises in a manner known per se a housing, in which there is situated at least one application device, with which powder can be applied to the objects. Situated in the upper region of the housing is an air plenum, which is fed with supply air via an inlet opening. The air plenum is closed off downwardly by a filter ceiling. In contrast to known filter ceilings, the one according to the invention is air-permeable in its marginal region only, while in its central region it consists of air-impermeable material. The supply air is thus introduced into the interior of the booth as a kind of nullair curtainnull which flows mainly along the side walls of the housing of the booth, entrains in the process stray excess powder which has not adhered to the objects to be coated, and supplies it to at least one extraction opening situated in the bottom of the booth. This extraction opening leads to a filter unit which, for its part, is connected to an extraction fan and in which the powder present in the air/powder mixture can be separated off and passed on for reuse. The effects achieved by the special design of the filter ceiling are that less turbulence forms in the coating region, no particles falling off from the filter ceiling can lead to coating defects and, on changing the filters contained in the filter ceiling, there is less fouling of the booth.
Abstract:
The object of the present invention is to efficiently drizzle decorative toppings onto baked goods in order to finish them in a decorative manner, while improving their taste. The baking of all types of edible pastries has variously required different modes of sugar coating, glazing, and frosting among which is a common technique called drizzling. In this process amounts of a usually warm, somewhat liquid, or molten topping is essentially dropped by fingers onto the pastries, forming thusly many random looking ridges of flavorful icing. The present invention is a device which seeks to improve upon the tradition of hand drizzling which has many drawbacks but remains as a prevalent practice in the bakery trades. To this end a simple but effective implement has been invented which, while having only four unsophisticated looking parts, a handle and three spatula-like blades, combines several attributes of a good invention such as filling a practical need, improving upon an existing procedure, saving time, and making a task more productive, cleaner, or pleasant to perform.
Abstract:
An epoxy application system and method for applying an epoxy having particulate constituents to an optical component including an epoxy reservoir, an applicator, and an actuator mechanically connected to the epoxy reservoir, the actuator operable to periodically invert the epoxy reservoir. A timing circuit is provided in one embodiment to periodically invert the epoxy reservoir. A vacuum device of one embodiment vacuums excess epoxy. Another embodiment of the epoxy application system includes an energy source for providing UV energy through a light guide. One embodiment further includes a UV light energy detector to measure UV light energy emitted through the light guide and a controller to determine a cure time based on the measured UV light energy. In another embodiment, a monitoring system such as a camera is provided to ensure provision of the UV light energy for the determined cure time.
Abstract:
An improved seasoning system 10, 11, 13 uniformly coats a food product with the desired amount of seasoning, with the seasoning rate preferably being controlled as a function of the product volume signals from the sensors 26, 34, 108 and 110. The seasoning system preferably utilizes linear motion conveyors and either a rotating drum 36 or a deflector 98 and a second seasoning unit 112, 114 between linear conveyors 94, 96. Oil may be sprayed onto food products and tumbled in a drum 16 which both rotates and moves in a reciprocating manner with the conveyor tray 14. An improved seasoning tray 123, 144, 148 has a planar floor 122, 138, 162 with an angled discharge edge 124, 137, 182 for uniformly distributing seasoning on the product. The seasoning system minimizes damage to the food product and uniformly coats the product with a desired amount of seasoning.
Abstract:
Proposed is an apparatus for the spray treatment of printed circuit boards. It has conveyor means for conveying the printed circuit boards (2) with a horizontally oriented PCB surface plane. Provided above the plane of conveyance (7) is a nozzle device (16) for spraying the top surface (13) of the printed circuit boards (2) with a liquid treatment medium. The apparatus is equipped with a suction device (26) that permits the sprayed-on treatment medium to be suctioned off from the top surface (13) of the printed circuit boards (2) during the spray process. In this manner the treatment medium is prevented from backing up, and a high-quality treatment process is ensured.
Abstract:
A powder coating apparatus for forming a resin coating on the inner periphery of a container (2) having a barrel (21), a shoulder (22) and a mouth (23) does have a holder (3) for temporarily holding the container in place, a spray gun (4) for blowing into the container a powder through an open skirt (21a) of the container. The apparatus further has a first passage (51) for guiding to the spray gun a first air stream together with the powder, a second passage (61) for feeding a second air stream for stirring the powder into the spray gun. The apparatus still further has a third passage (81) for collecting a first surplus of the powder from the container mouth (23), a fourth passage (71) for collecting a second surplus of the powder from the open skirt of the container, and control unit respectively connected to the first to fourth passages. Each control unit does effect a feedback control such that flow rate through and/or internal pressure in each passage are maintained at respective target levels, so that the resin powder is applied uniformly to the tube inner periphery ranging from the shoulder to barrel, with the proximity of the skirt being surely masked not to be covered with the powder.
Abstract:
The invention relates to a device for the coating of granulates and seeds, pellets and dragees with one or several coatings, whereby the seeds for coating are placed in a driven rotating drum, into which baffles fixed to the housing, in particular, spray and cleaning arms extend. Air supplies are connected to the drum, by means of which the interior of the drum is subjected to an air stream. The air distribution in the drum is achieved by means of an air splitter-plate fixed to the front side of the drum, arranged opposite a non-rotating air splitter plate fixed to the housing, which is formed such that it may move in an axial direction towards and away from the drum and which may be connected to the drum by means of air. An improved cleaning of the housing and drumward air feed is thus guaranteed.
Abstract:
A catch pan apparatus for starting and stopping coating is disclosed for coating a downwardly moving receiving surface by curtain coating. The catch pan device includes an intercepting pan that intercepts the curtain when coating is stopped and a substantially horizontal intercepting surface that intercepts the curtain only when the catch pan moves to start or stop coating. The intercepting pan and horizontal intercepting surface intersect to create a volume that retains in the catch pan excess liquids that would otherwise spill onto the coating receiving surface as the catch pan is retracted to a non-intercepting position. The catch pan is controllably retracted at high speed through the curtain using linear servomotors such that the releasing edge of the horizontal intercepting surface passes close to the coating receiving surface at the point of curtain release. Flushed edge guides maintaining curtain width are positioned outside the lateral edges of the catch pan. The lateral edges of the intercepting pan have side walls that intercept edge portions of the curtain. The side walls project outward and upward and terminate with horizontal severing edges spaced closely to the edge guides. Edge portions of the curtain are thereby directed partly onto the intercepting pan and partly onto the edge guides for evacuation by the edge guide suction removal means.
Abstract:
A method and apparatus of manufacturing a web which is striped with add-on material, comprising: a first slurry supply which forms a sheet of base web and moves the sheet along a first path; a second slurry supply; and a moving orifice applicator operative so as to repetitively discharge the second slurry upon the moving sheet of base web. The moving orifice applicator includes a chamber box arranged to establish a reservoir of the second slurry across the first path, an endless belt having slotted orifices, the endless belt received through the chamber box, and a drive arrangement operative upon the endless belt to continuously move the orifices along an endless path and repetitively through the chamber box. The orifices communicate with the reservoir to discharge the second slurry as bands of add-on material to the base web. The slotted orifices can be spaced apart along the belt and oriented so as to be angled with respect to the travel direction of the belt and parallel to each other.