| 摘要 |
PROBLEM TO BE SOLVED: To provide a good metal porous body with almost no difference in directional property by specifying the ratio of length and breadth of a pore of resin by applying permanent strain to foamed resin before plating when the metal porous body is manufactured by plating the foamed resin. SOLUTION: Before plating of foamed resin (foamed urethane or the like), conical rollers 3, 4 are pushed at the specified angle against an elastic foamed resin sheet 2 coiled around a roll 1, rotated in accordance with the running direction of the sheet 2 to spread the sheet 2 in the width direction by the difference in diameters of the rollers 3, 4. The angle, diameter ratio, pushing force against the sheet 2 of the rollers 3, 4 are adjusted based on the material, breadth of the sheet 2, and the ratio of length and breadth of the pore diameter of the sheet 2 is controlled to 1.2 or less by the remaining permanent strain. The directional property of a metal porous body is decreased so as to have almost the same tensile strength in any direction, and a storage battery with stable quality can be obtained. |
