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1. (WO1998049359) RESIN-COATED ALUMINUM ALLOY SHEET FOR DRAWN AND IRONED CAN

Pub. No.:    WO/1998/049359    International Application No.:    PCT/JP1998/001874
Publication Date: Fri Nov 06 00:59:59 CET 1998 International Filing Date: Fri Apr 24 01:59:59 CEST 1998
IPC: B05D 7/00
C22C 21/06
C23C 22/68
Applicants: TOYO KOHAN CO., LTD.

SHIMIZU, Keiichi

KUNISHIGE, Fumio

SHIRAI, Shinji

Inventors: SHIMIZU, Keiichi

KUNISHIGE, Fumio

SHIRAI, Shinji

Title: RESIN-COATED ALUMINUM ALLOY SHEET FOR DRAWN AND IRONED CAN
Abstract:
A resin-coated aluminum alloy sheet which makes it possible to form drawn and ironed cans having strengths necessary for suppressing the breakage of the walls when complicated machining inclusive of bending and unbending at a die shoulder radius portion having a small shoulder radius and subsequent ironing are carried out as a dry process, and which can provide an aluminum alloy film having a sufficient adhesive strength after the machining. The sheet is characterized by being manufactured by applying a silane treatment using a silane coupling agent alone or a composite treatment using both chromium phosphate and a silane coupling agent to an aluminum alloy sheet whose contents of Mn, Mg, Si, Cu, Fe and (Si+Fe), thickness and yield strength are controlled to be in predetermined ranges, and then coating the sheet with a thermoplastic resin.