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Document Type and Number:
Japanese Patent JP4834912
Kind Code:
PROBLEM TO BE SOLVED: To provide a grating body, having high corrosion resistance, and a storage battery superior a service life characteristic by restraining the occurrence of cracks of the node part of the grating body for the storage battery, using rotary expanding method. SOLUTION: In the rotary expansion method, by making a pair of rollers facedly mesh by alternately arranging a projecting blade and a flat part on the circumference and superposing a plurality of disk-like cutters in the flat part a plurality of strips of intermittent slits are formed on a lead alloy sheet for passing between the pair of rollers; filament parts 21 between the adjacent slits are overhung, in a mutually inversely turning curved shape in almost the vertical direction to a lead alloy sheet surface; intermittent parts of the intermittent slits are alternately cut by meshing of the flat part; and the intermittent slits are formed in a zigzag shape, and a meshing quantity d in the flat part is set to 0.05 mm to 0.90 mm.

Yoshihiro Murata
Application Number:
Publication Date:
December 14, 2011
Filing Date:
March 01, 2001
Export Citation:
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Panasonic Corporation
International Classes:
B21D28/10; H01M4/74; B21D31/04; H01M4/20
Domestic Patent References:
Attorney, Agent or Firm:
Hiroki Naito
Daisuke Nagano
Kentaro Fujii

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