Process for the production of plates made of transparent plastic material with non-transparent overinjected parts
AssigneeINCOS S. p.A.
InventorsAfro Rossanese, Maurizio Bazzo
Life of this patent
Estimating the term…
Abstract
Described herein is a process for the production of plates made of transparent plastic material with non-transparent overmoulded parts by means of a first direct injection and subsequent compression for the formation of the transparent plate, and a second injection for overmoulding said parts on the transparent plate, covering the indicators or witness marks of the first injection. Each injection can be in spots controlled in sequence, and the second injection can be followed by a respective step of post-compression.
Claims9
A process for the production of plates made of transparent plastic material with overinjected non-transparent parts, the process comprising the following steps:
- providing a mould, a first moulding station with at least one first injector, a second moulding station with at least one second injector, said injectors being located in a position directly corresponding to at least one area of the plate to be produced;
- moulding said transparent plastic material in said first moulding station by means of injecto-compression to limit the stresses on the point of injection, thus generating said transparent plate with an indicator or a witness mark of injection;
- and
- injecting the non-transparent plastic material within said mould in the second moulding station via said at least one second injector so as to overmould said parts on said transparent plate, so covering said indicator of injection.
Dependencies are inferred from the claim text.