Resin-Coated Aluminum Alloy Plate for Capacitor Applications Demonstrates Enhanced Processability and Durability

The World Intellectual Property Organization (WIPO) has published a patent entitled "RESIN-COATED ALUMINUM ALLOY PLATE FOR BOTTOMED CYLINDRICAL CASE FOR CAPACITOR" under publication number WO/2011/118027. The invention, filed by Sumitomo Light Metal Industries, Ltd. on March 26, 2010 (under PCT/JP2010/055395), aims to provide a resin-coated aluminum alloy plate with improved drawing and ironing processability, while preventing cracking of the resin coating film and separation between the aluminum alloy plate and the resin coating film during processing.

Key Takeaways:

• The resin-coated aluminum alloy plate is composed of a substrate (aluminum alloy plate), a chemical conversion coating film, and a resin coating film.
• The resin coating film is a cured product of a resin mixture containing epoxy resin, polyester resin, amino resin, and isocyanate resin at a specific mixing ratio.
• The plate exhibits good drawing processability and ironing processability.
• It is resistant to cracking of the resin coating film and separation between the aluminum alloy plate and the resin coating film during processing.
• The plate is also free from deterioration of the coating film and corrosion of the base aluminum in harsh environments after processing.

Statistics:

• The patent was published on September 29 by the World Intellectual Property Organization (WIPO).
• The patent was filed on March 26, 2010, under Application No. PCT/JP2010/055395.
• The resin-coating film is a cured product of a resin mixture with a specific mixing ratio.

Sources:

• World Intellectual Property Organization (WIPO). (Publication No. WO/2011/118027). Resin-Coated Aluminum Alloy Plate for Bottomed Cylindrical Case for Capacitor. Published September 29.