Patent ID: 6993841

Claim:
A process for the production of a solenoid-shaped filled wire and filled plate strip to create bi-coloured ornamental items, which comprises: firmly applying a thin layer of soldering alloy to a plate strip of colour A; transforming the plate strip combined with the layer of soldering alloy into a compound tube having a soldering alloy portion placed on the inner surface of said compound tube; inserting a wire of colour B, having a diameter slightly smaller than the diameter of the internal part of the compound tube, into said compound tube of colour A to obtain a filled tube; thereafter drawing the filled tube; soldering the filled tube in order to obtain a single filled body; transforming the single filled body into a filled plate strip or into a filled wire by a lamination and/or drawing phase; wrapping the filled plate strip or the filled wire in a solenoid wrapping over a soft support; modeling the solenoid wrapping obtained with the single filled body into a desired shape by stamping; or modeling the solenoid-shaped filled wire or plate strip into a chain or into other ornamental items by feeding the solenoid-shaped filled wire or plate strip into a machine; and removing the colour A from one of the sides of the modeled product until a distinctive surface of the colour B internal core is brought to light.