Process for making producer-colored fibers, yarns, films and related products
AssigneeEastman Kodak Company
InventorsBobby M. Phillips, Dale R. Gregory
Life of this patent
Estimating the term…
Abstract
Process for making producer-colored fibers, yarns, films and related products by extruding from a source, such as from an extruder, a flow of polymer to a spinneret placing in the path of flow between the polymer flow and the spinneret a dye solid or pigment solid having a predetermined shaped surface area, and flowing the polymer into contact against the exposed surface of the dye solid or pigment solid and by such contact dissolving at a predetermined rate a predetermined portion of the dye solid or pigment solid into the polymer flow and coloring the polymer flow for subsequent extrusion from the spinneret as colored filaments.
Claims8
Process for producing one or more colored filaments from a spinneret, the process comprising:
- extruding from a source a flow of polymer to the spinneret,
- placing in the path of flow between the polymer flow and the spinneret a dye solid or pigment solid having a predetermined shaped surface area for continuous exposure to the polymer flow, and
- flowing the polymer into contact against the exposed surface of the dye solid or pigment solid and by such contact dissolving at a predetermined rate a predetermined portion of the dye solid or pigment solid into the polymer flow and with such predetermined portion providing a desired concentration of dye or pigment in the polymer flow.
Dependencies are inferred from the claim text.