Isesaki Works


This integrated manufacturing plant handles products such as aluminum foil for packaging and batteries, household aluminum foil and highly pure aluminum foil for aluminum electrolytic capacitors, as well as processing of PTP and other foils.

To meet increasingly diverse and sophisticated customer needs, Isesaki Plant continually works to improve its technology and quality to create leading-edge, high-precision aluminum foil products.

Isesaki Plant has a unique system, maintaining a regular stock of uncut, low- and medium-thickness raw foil (12-20 μm) in order to fulfill customer requests for specified lengths and widths, in line with desired turnaround.

Picture of Isesaki Works

  • Aluminum foil (simple foil)
  • Processed foil (focusing on PTP)
  • Household aluminum foil
Began Operation May 1979


1670 Kasukawacho, Isesaki, Gunma, Japan 372-0023
TEL: +81-270-23-1189 FAX: +81-270-23-6249


By Train
  • 25 minutes by taxi from Honjo Station on the JR Takasaki Line.
  • 30 minutes by taxi from Honjo-Waseda Station on the JR Joetsu Shinkansen Line.
By Car
  • 30 minutes from Kan-Etsu Expressway, Honjo Kodama I.C.
  • 15 minutes from Kan-Etsu Expressway → Kita-Kanto Expressway, Isesaki I.C.

Main Facilities

Picture of Rolling Mill

Rolling Mill

This automatically controls width shape, incorporating UACJ’s expertise in process control technology to manufacture high-quality aluminum foil.

Picture of Separator


This separates two sheets of aluminum foil that have been rolled together while performing critical online quality inspections.

Picture of Cutter


The manufacturing environment is designed to prevent contamination by foreign substances. It provides for online quality-control inspections and cutting management.

Picture of Double-Sided Printing Equipment

Double-Sided Printing Equipment

Double-sided pitch printing using gravure coating equipment — and performed in clean environments that conform to GMP standards — ensures high quality pharmaceutical packaging materials.