Coating processes – Solid particles or fibers applied – Interior or hollow article coating
Patent
1996-11-13
1998-03-31
Beck, Shrive
Coating processes
Solid particles or fibers applied
Interior or hollow article coating
427181, 427230, 427231, 427 21, 427 211, B05D 722
Patent
active
057336008
ABSTRACT:
Particles coated with biological substances are deposited onto the concave inner surface of a length of tubing by a process which includes preparing a uniform suspension of coated particles and introducing the particles into the tubing while rotating horizontally. Then the speed of rotation is increased to drive the particles out of suspension and against the inner surface. After particle separation, the rotational speed is decreased and a gas is passed through the tubing to blow out the separated liquid. Next both the speed of rotation and the gas flow rate are increased to dry the particles that have been deposited against the inner surface of the tubing. An apparatus for performing the method also is disclosed.
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Barr Michael
Beck Shrive
PowderJect Vaccines, Inc.
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