The invention discloses a treating process and a treating device of a
hydrofluoric acid corrosion resistant aluminum-plastic
composite film. The treating process comprises the following steps: (1) removing oil from the bright surface of
aluminum foil; (2) leaching the bright surface of the
aluminum foil to remove alkali; (3) performing
hydrofluoric acid treatment on the bright surface of the
aluminum foil: leaching the bright surface of the aluminum foil with hot
hydrofluoric acid water solution, and thus forming an
aluminum fluoride salt conversion film under certain
etching action generated by the strongly acid solution on the surface of the aluminum foil; (4) dipping with cold water; and (5) bonding the
composite film: bonding a
polypropylene film and the treated bright surface of the aluminum foil with an
adhesive, so as to form a hydrofluoric acid resistant aluminum-plastic
composite film. The treating fluid of the treating process of the hydrofluoric
acid corrosion resistant aluminum-plastic composite film does not contain
hexavalent chromium and has the advantages of environmental friendliness, high film-forming speed, simple process, uniformity of the film, strong
corrosion resistance, little environmental
pollution and low use cost, and additionally, the hydrofluoric acid resistant performance of aluminum-plastic composite materials can meet the requirements.