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US 11,999,092 B2Granted
Method and system for blowing a parison
AssigneeSiapi S.R.L.
InventorsStefano Tonti, Michele Varaschin
Life of this patent
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Abstract
A production method for blowing a container starting from a parison comprising the steps of: i) positioning a parison inside a forming mould (2) for forming the container; ii) deforming the parison (10) placed in the mould (2); the step of deforming the parison (10) comprising the sub-steps of: introducing a pressurised fluid into the parison (10) placed in the mould (2); sucking gas which is located inside the mould (2) and outside the parison (10) present in the mould (2).
Claims3
A system for blowing a parison for making a container comprising:
- a mould (2) which delimits a space (20) for forming the container starting from the parison;
- a means (4) for introducing a pressurised fluid into the parison placed in the mould (2);
- a gas suction means (3) comprising:
- i) at least a first opening (21) placed along a wall of the mould (2);
- ii) a second opening (22) which leads into said forming space (20);
- and
- iii) an aspirator (30) operatively connectable with both the first and with the second opening (21, 22);
- a first valve means (51) which enables/prevents fluid communication between the aspirator (30) and the first opening (21);
- and
- a second valve means (52), which can be operated separately from the first valve means (51), which enables/prevents fluid communication between the aspirator (30) and the second opening (22);
- wherein the first and second valve means (51, 52) are two distinct valves placed on two distinct conduit sections;
- and
- wherein the first opening (21) leads into the forming space (20) indirectly by means of a groove located on a part of the mould (2) and opens towards an inside of the forming space (20).
10 more elements
Dependencies are inferred from the claim text.