PLASTIC POLYETHYLENE CISTERN HAVING TWO OR MORE COATINGS (INNER AND OUTER COATINGS), VIRGIN POLYETHYLENE FINAL COATING AND ANALOGOUS COLOURS DEFINED BY THE PRODUCT AND THE STORAGE SPACE PREVENTING THEMIGRATION OF NOXIOUS SUBSTANCES

摘要

Novelty: plastic polyethylene cistern manufactured by the rotary casting method and used for the storage of foodstuff and water (fig.3). Problem to be resolved: to hinder the migration of noxious substances to foodstuff preserved into said cistern for a long time interval. Constitution: the final layer of the invention is made of a precise material coming in safe contact with the foodstuff and liquids stored up into the invented cistern the inner walls of which are coated with virgin polyethylene. Embodiment: the present invention comes into variable-dimension moulds and serves for the storage of wine, oil, water, pickles, chemicals etc.