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US 5,326,592 AGranted
On die solution coating of extruded profiles and apparatus therefor
AssigneeGenCorp Inc.
InventorsJames R. Goewey, Keith E. Wilson
Life of this patent
Estimating the term…
Abstract
A coating apparatus and process for coating selected surface areas of extruded substrates with decorative or functional coatings by passing the extruded substrates emerging from the extrusion die through a coating block. The coating block contains a coating cavity die conforming to the selected surfaces to be coated wherein liquid coating is supplied to the coating cavity die in a manner to selectively coat the selected surfaces on the extruded substrate.
Claims18
An apparatus for applying a coating solution to an extruded substrate, comprising:
- a coating block abuttingly secured to an extrusion die, said coating block containing at least one coating die cavity opening which conforms to one or more selected surfaces of a polymeric substrate emerging from said extrusion die and at least one coating solution opening, said coating block containing coating means for supplying a liquid solution polymer coating to said coating die cavity opening and to one or more of said selected surfaces of said substrate which surfaces are adjacent to said coating die cavity opening to coat said one or more selected surfaces, said coating means including at least one channel communicating with said coating cavity opening and said coating solution opening, said coating means being located on the back of the coating block adjacent the extrusion die whereby the surface of said extrusion die forms a wall of each said channel, said coating block cooperating with and being adapted to receive extruded substrate from said extrusion die.
A process for selectively applying a liquid coating to one or more selected surfaces on an extrudate, comprising the steps of:
- forming a polymeric extrudate;
- selectively coating the one or more selected surfaces of said extrudate as it emerges from an extrusion die by passing said extrudate through a coating block abuttingly secured to the extrusion die, said coating block having at least one coating die cavity opening which conforms to one or more selected surfaces of said polymeric extrudate emerging from said extrusion die and at least one coating solution opening, said coating block containing coating means including at least one channel communicating with said coating cavity opening and said coating solution opening, said coating means being located on the back of the coating block adjacent the extrusion die whereby the surface of said extrusion die forms a wall of each said channel, and
- supplying said coating die cavity with a liquid solution polymer coating which is applied to said one or more selected surfaces of said extrudate.
An apparatus for solution-coating an extrudate, comprising:
- a coating block for applying at least one liquid solution polymer coating to a polymeric extrudate;
- said coating block being adapted to be abuttingly secured to an extrusion die and having a coating die cavity opening which conforms to a selected surface of said polymeric extrudate emerging from said extrusion die and having a coating solution opening, said coating block containing coating means including a channel communicating with said coating cavity opening and said coating solution opening, said coating means being located on the back of the coating block adjacent the extrusion die whereby the surface of said extrusion die forms a wall of said channel, said coating block cooperating with and being adapted to receive said extrudate directly from an extrusion die.
A solution coating process, comprising the steps of;
- extruding a polymeric article through a die plate, providing a coating block abuttingly secured to the die plate and in alignment with said extruded article, said coating block having at least one coating die cavity opening which conforms to one or more selected surfaces of said extruded article emerging from said die plate and having at least one coating solution opening, said coating block containing coating means including at least one channel communicating with said coating cavity opening and said coating solution opening, said coating means being located on the back of the coating block adjacent said die plate whereby the surface of said die plate forms a wall of each said channel, said coating block cooperating with and being adapted to receive said extruded article from said die plate,
- feeding at least one liquid polymer coating solution to said coating block having said at least one channel therein communicating with a preselected surface of said extruded article to be coated, and
- applying said at least one liquid polymer coating solution to said preselected surface of said extruded article as it emerges from said die plate.
Dependencies are inferred from the claim text.