Method of injection-moulding plastics for electrical shielding casings
AssigneeTelefonaktiebolaget LM Ericsson
InventorsKarl-Erik Leeb, Lars Persson
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Abstract
The present invention relates to a method of injection-molding electrically shielding electronic casings, where a laminate that comprises at least one metal foil and at least one plastic layer is held stretched in an injection-molding tool. According to the invention, a plastic structure is molded in the tool on that side of the laminate which comprises the plastic layer, wherewith the laminate is deep-drawn in the tool and formed therein as the plastic material is injected thereinto and the plastic layer adheres to the plastic structure, therewith forming a molded plastic element which includes an integrated and uniformly distributed and therewith shielding metal layer.
Claims13
A method of manufacturing a plastic electric shielding casing for at least partially enclosing electrical equipment, said method comprising the steps of:
- enclosing in an injection-moulding tool a foil laminate, the foil laminate including two plastic layers and an intermediate metal foil;
- injecting a plastic material into the tool onto one of the plastic layers of the foil laminate, so that the foil laminate is deep-drawn into the tool, the plastic material forming a plastic structure with at least one of said plastic layers adhering to said plastic structure so as to form a plastic element which includes the foil laminate and the plastic structure, wherein a certain part of the plastic element includes only the foil laminate;
- and
- attaching the certain part of the plastic element to one of a circuit board containing the electrical equipment and another foil laminate in another part of the shielding casing.
Dependencies are inferred from the claim text.