Verfahren zur Herstellung von Einwegbehältern für Lebensmittel aus Aluminium unter Anwendung einer Antikorrosiven Behandlung auf der Basis von Dreiwertigem Chrom und So Erhaltenes Produkt

Details

Veröffentlichungs-Nr.

EP4786355

Anmeldetag

1. Dezember 2025

Veröffentlichung

5. August 2026

Rechtsraum

EP

IPC

B65D1/00

Abstract

Process of forming disposable food containers made of aluminum with application of an anticorrosive treatment, comprising the steps of: (A) chemical degreasing with solution of low alkaline surfactant soaps; (B) washing; (C) pickling with solution composed of HNO<3> and H<2>SO<4>; (D) satin finishing with solution composed of NaOH, adjusted with NaOH; (E) second washing; (F) an electroplating step is provided, divided into the following sub-steps: - (F.1) preparation of the electrolytic bath and immersion of the container in a conversion treatment for aluminum based on trivalent chromium; - (F.2) application of direct electric current through the electrolytic bath until a uniform metallic layer is formed; - (L) removal from the electrolytic bath and rinsing to remove possible electrolyte residues; - (M) a passivation treatment step.

Anmelder

Firma

MECHANOTOOLS S.R.L.

Land

🇮🇹 Italien

Fachgebiete