| 摘要 |
A process is disclosed for applying to a surface of a support member at least one ribbon-like stream of a first coating composition side-by-side with at least one ribbon-like stream of a second coating composition comprising providing an extrusion die source for the ribbon-like stream of the first coating composition, providing a slide die source for the ribbon-like stream of the second coating composition, establishing relative motion between the surface of the support member and the source of the ribbon-like streams, simultaneously and continuously applying the ribbon-like streams to the surface of the support member whereby the ribbon-like streams extend in the direction of relative movement of the surface of the support member and the sources of the ribbon-like streams to form a continuous unitary layer having a boundary between the side-by-side ribbon-like streams on the surface of the support member and drying the continuous unitary layer to form a dried coating of the first coating composition side-by-side with a dried coating of the second coating composition. This process may be carried out with apparatus comprising an extrusion die attached to and supporting a slide die, the extrusion die being adapted to applying to a surface of a support member at least one ribbon-like stream of a first coating composition and the slide die being adapted to apply to the surface a ribbon-like stream of a second coating composition side-by-side to and in edge contact with with the ribbon-like stream of the first coating composition.
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