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US 2020/0101642 A1Published application
Apparatus for purification of plastic material intended for food contact
AssigneeCostruzioni Meccaniche Luigi Bandera S.p.A.
InventorRoberto CAL
Life of this patent
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Abstract
A polyethylene terephthalate purification apparatus comprises at least a reactor (4) which houses the plastic material to be purified, an opening connected to a vacuum pump, stirrers (16) to ensure the stirring of the plastic material inside of the reactor (4) and a heating mechanism comprising a microwave heating device to promote the excitation of the polar molecules.
Claims15
1-15. (canceled)
An apparatus for purification of plastic material intended for food contact from contaminants comprising at least one reactor for receiving the plastic material to be purified, the at least one reactor comprising:
- a closed housing having an opening for the plastic material to be loaded into the housing and an opening for the plastic material to be unloaded therefrom;
- a vent relief;
- respective valve means associated with the openings for loading and unloading the plastic material and closing and opening of the openings;
- a vacuum pump connected in fluid communication with the vent relief with an interposition of further valve means;
- stirring means located in the housing for ensuring that the plastic material is stirred in the reactor during the process, and
- heating means associated with the reactor,
- wherein the heating means comprise radiant heating means for supplying energy to the plastic material contained in the reactor.
4 more elements
Dependencies are inferred from the claim text.