METHOD FOR STRETCH-BLOW MOULDING A CONTAINER, INCLUDING MEASURING THE MOVEMENT OF THE STRETCH ROD DURING A BOXING OPERATION

摘要

The invention relates to a method for manufacturing a container (2) from a blank (3) made of plastic material, in a stretch-blow moulding unit (7) including: a mould (11) provided with a wall (13) and a mould base (14) which is axially movable relative to the wall (13) between a low position and a raised position; a stretch rod (22) which is axially movable relative to the mould (11) between a high position and a low position; said method including: a phase of inserting the blank (3) in the mould (11); a phase of stretch-blow moulding; a phase of boxing; a phase of determining the start and end of the boxing phase, respectively, by detecting the movement of the rod (22) from the low position thereof and the stopping of the rod (22) at the raised position thereof.