Process and device for co-injection molding multilayer products
AssigneeJohnson Control S.p.A.
InventorDante Siano
Life of this patent
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Abstract
Multilayer products, such as vehicle trim panels, provided with an external skin layer and an internal core layer are co-injection molded by injecting external material (P) through a first plurality of points of injection (3a-3c) and injecting the core material (C) through a second plurality of points of injection (4a-4g), the points and nozzles of injection of one material being physically distinct from those of the other material.
Claims11
A process of co-injection molding a multi-layer product having an external skin layer and an internal core layer, comprising injecting two or more materials from a plurality of distinct injection points for each of said two or more materials into a single mold cavity in a manner such that the product has a skin layer which substantially completely covers an internal core layer.
A process of co-injection molding a trim panel for a motor-vehicle integral with retainers, studs, and/or other means of assembly, comprising injecting two or more materials one after another or substantially one after another from a plurality of distinct injection points for each of said two or more materials into a into a single mold cavity in a manner such that the product has a skin layer which substantially completely covers the internal core layer wherein the mold cavity comprises one or more pre-selected areas corresponding to where retainers, studs, and/or other means of assembly will be located on the trim panel, wherein the skin layer is prevented from flowing into said pre-selected areas.
Dependencies are inferred from the claim text.