Patent ID: 9044889
Filing Date: 2015-06-02
Classification: B29C,B29K,B29L

Abstract:
1. A method for producing a vessel ( 2 ) by blowing in a mould ( 11 ) from a preform ( 3 ) made of plastic material, wherein the method comprises: introducing the preform ( at a predetermined moment, called pre-blowing cue (tp), controlling the opening of an electrovalve ( measuring a pressure (P) inside the preform ( detecting a real moment (tA) at the beginning of the pre-blowing, at which the pressure (P) in the preform ( comparing the real moment (tA) with a theoretical pre-blowing beginning moment from a theoretical reference curve; if the real moment (tA) at the beginning of the pre-blowing follows the theoretical pre-blowing beginning moment, advance the pre-blowing cue (tp); and if the real moment (tA) at the beginning of the pre-blowing precedes the theoretical pre-blowing beginning moment, delay the pre-blowing cue (tp).