Abstract:
A straightening plate provided in its central part with a gas exhaust opening is disposed under a face plate serving as a heating plate. A temperature-reducing purge ring is disposed between the face plate and the straightening plate. The temperature-reducing purge ring has an outside diameter substantially equal to that of the straightening plate and is provided in its inner circumference with plural gas jetting holes. The temperature-reducing purge ring is disposed close to the face plate such that a thin gap is formed between the temperature-reducing purge ring and the face plate. When a cooling gas is jetted radially inward through the gas jetting holes of the temperature-reducing purge ring, a vacuum is created between the lower surface of the face plate and the upper surface of the temperature-reducing purge ring. Consequently, a large amount of air is sucked into the space between the face plate and the straightening plate and flows together with the cooling gas, so that the face plate can be rapidly cooled.
Abstract:
Optical elements are made using micro-jet printing methods to precisely control the type, position and amount of polymer deposited onto a substrate. In preferred embodiments, the proportions of two or more different polymer compositions are varied over the course of the deposition process to deposit adjoining polymer pixels in the form of a film on the substrate surface. The optical properties of each adjoining polymer pixel can be selected to provide a predetermined optical property, including a specific value of index of refraction. Preferably, the film has a radially non-monotonic refractive index profile and/or an angularly non-monotonic refractive index profile.
Abstract:
A method of fabricating a liquid crystal display device, includes the steps of (a) coating a material of which an alignment film is composed, on first and second substrates, (b) blowing gas to a surface of the material to dry the material, (c) rubbing the material for forming the alignment film, (d) arranging the first and second substrates such that the alignment films formed on the first and second substrates face each other, and filling a gap formed between the first and second substrates with liquid crystal.
Abstract:
When a running web (3) is coated with a liquid coating mixture, at least one side of the web is provided with a coating (40, 40′) of coating mixture. Existing excess (33) of coating mixture in or adjacent to the regions of the edge portions of the web is removed by being blown off downstreams of where the coating operation is performed.
Abstract:
Devices and methods for applying a polymeric coating to a medical device. The steps of the coating process including applying a liquid polymeric material to the surface of the medical device, then directing a stream of gas to impinge on the surface of the medical device. Excess liquid polymeric material is removed from the surface of the medical device. The devices used in the coating process and the coated medical device are also part of this invention.
Abstract:
A fluid knife for use with a workpiece treatment/cleaning apparatus, the fluid knife including a front blade and a bottom blade cooperating to form a nozzle. The front blade is pivotally mounted whereby pivoting the blade increases the size of the nozzle to purge the nozzle of any particulate matter caught or trapped in the nozzle.
Abstract:
A method of application of a liquid or pasty medium onto a moving material web consisting, in particular, of paper or cardboard, in which a direct application (2) of a liquid or pasty medium (4) onto one side of a moving material web (1) and a contactless deflection (3) of the moving material web along a curved path of motion ensues, the side of the moving material web to be provided with the liquid or pasty medium passing through a concave curvature and the direct application (2) of the liquid or pasty medium ensuing directly ahead of the deflection (3) or during the deflection as a free jet along a contactlessly guided section of the moving material web. Additionally, an apparatus for implementing the method is described.
Abstract:
A device is disclosed for applying adhesive to platens of a textile screen printing machine as the platens move from the unload stage to the load stage. The device comprises a frame mountable to the screen printing machine so that it extends over the moving platens, at least one interconnectable housing carried by the frame. Each housing has an array of adhesive-depositing nozzles and adhesive-spreading air nozzles plus a drying nozzle. As a platen passes under the housings, a sensor initiates the array of adhesive nozzles to deposit columns of adhesive onto the platens. Then the air nozzles spread the columns of adhesive by blowing air onto the columns. Finally, the spread adhesive is dried by gas from the drying nozzle, preferably directing a single curtain of air under pressure onto the adhesive. The housings are modular so that the device can be used with larger platens by simply adding one or more housings.
Abstract:
The invention relates to an apparatus for blowing off surplus coating material in the continuous coating of a metal band, in particular in the zinc coating of steel bands, with a pair of blow-off nozzles, between whose nozzle bodies 2, which are chargeable with a blow-off medium, in particular compressed air, the metal band 1 is guided at a distance from the nozzle orifices 3 extending transversally to the running direction of the band. To improve the axial arrangement of the metal band between the nozzle bodies 2 it is provided that at least one of the two nozzle bodies 2 which are adjustable relative to the metal band carries an optical measuring device 4a, 4b which is movable parallel to the nozzle orifice 3 covering at least the zone of an edge K of the metal band 1 and that the opposing nozzle body is provided with a reflector 11 towards which the optical axis of the measuring device 4a, 4b is directed in its position outside of the metal band edge.
Abstract:
An air knife device for regulating the thickness of a layer deposited on a strip at the output of a bath, comprising at least one nozzle defined by two lips spaced a small distance apart, the nozzle being supplied with pressurized fluid in order to blow at least one flat jet of fluid onto the strip. The device is associated with at least one fluid cushion stabilizer arranged on at least one side of the nozzle along one of its lips and comprising a substantially flat wall extending from this lip in a direction substantially parallel to the strip so as to define a thin, flat space between the wall and the strip. A fluid is introduced into this space for the formation of a fluid cushion which is able to stabilize the vibrations of the strip.