Plastic bracelet and a method of making
AssigneeThe Swatch Group Research and Development Ltd
InventorsClaire Rannoux, Blaise Poinsot, Nicolas Francois
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Abstract
A method for manufacturing a bracelet made of synthetic material for watches or jewellery including at least one strand, the method including a step of making, by moulding or extrusion, a band of synthetic material intended to form at least one strand, the method being wherein it then includes a step of chemical mechanical polishing the band. A bracelet made of synthetic material for watches or jewellery includes at least one strand formed of an extruded or injection moulded band, wherein at least one strand has a roughness Rp less than or equal to 3 μm and preferably less than or equal to 2 μm.
Claims12
A method for manufacturing a bracelet made of synthetic material for watches or jewellery comprising at least one strand, the method comprising:
- making, by extrusion, a band of synthetic material intended to form said at least one strand, the synthetic material containing at least one polymer elastomer with a hardness between 55 and 90 Shore A;
- cutting said band to form said at least one strand with straight edges;
- and
- polishing said at least one strand by immersing said at least one strand in an abrasive mixture in movement in a tank of a polishing machine to reduce a surface roughness of said at least one strand to have a mean roughness Rp less than or equal to 3 μm such that a surface of said at least one strand is matt and the straight edges are rounded.
Dependencies are inferred from the claim text.