Abstract:
An atomization apparatus includes a manifold (156) including an air tube ( 158 ) disposed about a liquid tube (160). The apparatus also includes multiple nozzles (108) coupled to the manifold (156), where each nozzle (108) is coupled to the air tube (158) and the liquid tube (160).
Abstract:
A protective member (14) and a nozzle assembly (11) incorporating the protective member (14) are provided. The protective member (14) is for use with a nozzle (12) having a strand guide passageway (18) for receiving a strand (16) of material. Protective member (14) comprises a body (60) configured to be received in the strand guide passageway (18) of the nozzle (12). The body (60) of the protective member (14) has a passageway (63) for the strand (16) and is disposed between the strand guide passageway (18) and the moving strand (16). The body (60) of the protective member (14) is composed, at least in part, of a material having a wear resistance sufficient to resist wear caused by the strand (16) being guided thereby. Alternatively, a portion of the body (60) may be coated with a material having a wear resistance sufficient to resist wear caused by the strand (16).
Abstract:
The invention relates to methods and apparatus for coating a medical device having a cylindrical shape like a stent. The invention includes an apparatus including a bi-directional rotation member with a bi-directional indexing movement. The rotation member comprises two rollers with a gap therebetween on which the stent is placed.
Abstract:
There is disclosed a method for atomising a liquid stream (11) comprising passing through a nozzle (12), directing a gas stream (13) to break up the liquid stream (11) into droplets, characterised in that the nozzle (12) is vibrated.
Abstract:
An application method and apparatus making able to apply a paper web or like in whatever stage of the process from the first dewatering step until the final drying step. The process comprises forming a fog from the coating slurry and directing the fog into a nozzle (24), which is not in physical contact with the web (11). The coating layer is smoothened after the application, using e.g. a doctor blade (32), or in surface sizing the web is led between two rollers.
Abstract:
A method of bonding in which water-based adhesives, i.e., aqueous polymeric dispersions or emulsions, are extruded from the discharge outlet (26) of a dispensing device (10) as a bead (12) which is impinged by air jets (14) directed at an angle and tangent to the periphery of the bead. The viscosity of the water-based adhesive, hydraulic pressure at which the adhesive is extruded from the dispensing device, diameter of the discharge outlet and pressure of the air jets are controlled such that the extruded bead is attenuated by the air jets to form an elongated, thin adhesive strand or fiber (16) which is deposited in a spiral pattern (31) on a first substrate (32) for subsequent bonding to a second substrate.
Abstract:
A device for gas atomizing a liquid stream (41), such as a stream of molten metal or metal alloy, has an atomizing device (43) including, for example, an annular opening for receiving the stream. The atomizing device is arranged for applying atomizing gas to the stream so as to form a spray (50) of atomized particles. The atomizing device includes at least one atomizing rotor (45) which produces an atomizing gas flow field which is asymmetric with respect to the axis of the stream whereby, by varying the positional relationship of the symmetric gas flow field with respect to the stream, movement is imparted to the spray. The atomizer itself may also be tilted to and fro, the movements in combination enabling more flexibility with improved uniformity and control of deposition.
Abstract:
A spray nozzle assembly having a nozzle body and a downstream air cap. The air cap has a central opening through which liquid is directed and a plurality of circumferentially spaced air passages oriented at a compound angle to the central flow axis of the air cap opening for directing pressurized air flow streams that interact with discharging liquid for atomizing the liquid while imparting a tangential direction to the atomized liquid for enhanced atomization and a swirling movement into a full cone spray pattern. The air cap may have an integrally formed spray tip or a separate spray tip may be associated with the nozzle body. The air cap may be formed with a downstream conical recess into which liquid and air streams are directed, or alternatively, be designed for atomizing liquid internally within the air cap.