Coating apparatus – Solid member or material acting on coating after application – Rotary member
Reexamination Certificate
2005-08-09
2005-08-09
Fiorilla, Chris (Department: 1734)
Coating apparatus
Solid member or material acting on coating after application
Rotary member
C118S123000, C118S234000, C118S235000, C118S325000, C427S011000, C427S359000
Reexamination Certificate
active
06926772
ABSTRACT:
Continuous void-free uniform coatings are formed on filamentous articles by applying a voided or otherwise substantially uneven coating to at least some of the exposed portion of a filamentous article or to a rotating substrate. The filamentous article or substrate is passed through an improvement station containing a plurality of coating-wetted rolls that contact and re-contact the wet coating at different positions along the length of the filamentous article or rotating substrate, wherein the periods of the rolls improve the uniformity of the coating. For coatings applied to a rotating substrate, the uniform wet coating is transferred to the filamentous article. The final coating can be very thin, very uniform and completely or substantially void-free. The coating improvement can be quickly and easily obtained using low cost equipment.
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3M Innovative Properties Company
Burtis John A.
Fiorilla Chris
Lazor Michelle Acevedo
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