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US 8,286,366 B2Granted
Apparatus and process for drying plastic material for a machine used to produce plastic containers
AssigneeS.I.P.A. Societa' Industrializzazione Progettazione E Automazione S.P.A.
InventorsGiampietro Pittari, Matteo Zoppas
Life of this patent
Estimating the term…
Abstract
PET drying apparatus for a machine used to produce PET bottles, comprising a unit in which the raw plastic is dried, before the plastic melting process, in which the PET is heated by using microwave energy and the PET is dehumidified by the outflow of the vented air that is recovered after the blowing process.
Claims12
An apparatus for processing plastic material used to produce a plastic container, said apparatus comprising
- a drying unit that is configured to heat the plastic material and moisture contained therein and to dehumidify said plastic material;
- an injection mold unit that is configured to perform a molding process;
- a blowing unit that is configured to blow the plastic material, to form a plastic container, and to perform a de-gassing process;
- means a first channel that is configured to recover compressed vented air obtained from the de-gassing process performed after the blowing and forming the plastic material into the plastic container;
- means a heating unit that is configured to heat the recovered compressed vented air;
- and
- means
- means a second channel that is configured to feed said heated recovered compressed vented air to the plastic material for evacuating the moisture extracted from said plastic material.
5 more elements
A process for processing plastic material used to produce plastic containers, comprising the following steps:
- providing the plastic material;
- drying the plastic material;
- forming the plastic container with the plastic material by a blowing process;
- degassing the container after the blowing process;
- recovering compressed vented air from the de-gassing process;
- heating said recovered air;
- and
- recycling said heated recovered air to dry the plastic material;
- wherein the drying the plastic material with the heated recovered air comprises:
- heating the plastic material and moisture contained therein;
- and
- dehumidificating said plastic material using said heated recovered air.
9 more elements
Dependencies are inferred from the claim text.