Extrusion system with slide dies

Details Extrusion system with slide dies Extrusion system with slide dies

1995-01-06

1997-03-25

Bareford, Katherine A.

Coating processes

Nonuniform coating

Deforming the base or coating or removing a portion of the...

427286, 427289, 427356, 118 38, 118411, B05D 312, B05C 318

Patent

active

056142609

ABSTRACT:
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.

REFERENCES:
patent: 2761791 (1956-09-01), Russell
patent: 3920862 (1975-11-01), Damschroder et al.
patent: 4521457 (1985-06-01), Russell et al.
patent: 5075139 (1991-12-01), Crumbach et al.

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