HERMETIC CELL AND METHOD OF MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain a hermetic cell having a high reliability by suppressing cracks generated at a boundary portion between side surfaces and a bottom of an electrolytic cell in a longitudinal shape of hermetic cell. SOLUTION: In the hermetic cell provided with the electrolytic cell made from synthetic resins mainly composed of ethylene-propylene block copolymer, at a boundary portion between side surfaces and a bottom of the electrolytic cell, micro-voids are made to exist in larger numbers than other sites.