Abstract: A package for batteries which comprises a header board and a heat-shrunk thermoplastic film holding the batteries relative to the header board. The header board has a vertical wall and a skirt integrally extending downwardly from the lower end of the vertical wall and covering a portion of the battery. The thermoplastic film covers the skirt and the batteries.

Abstract: In an alkaline battery hermetically sealed by fusion of an insulator containing silicon oxide such as glass interposed between an annular metal cover electrically connected to one electrode of the battery and a metal member connected to the other electrode of the battery, an annular packing is disposed inside the annular metal cover in abutment therewith, and a metal collector plate is connected to the metal member and disposed below the insulator. The peripheral edge of the metal collector plate is tightly held against the inner periphery of the packing to define a closed space between the insulator and the collector plate.

Abstract: A method is provided which comprises preparing pulverized ferrite having a magnetoplumbite type crystal structure of hexagonal system, mixing and kneading the ferrite with a viscous binding agent, subjecting the mixture to rolling to form a sheet-like mass with the easy axis being orientated in the direction perpendicular to the plane of the ferrite sheet by making use of anisotropic configuration of the crystal grains of the pulverized ferrite, rolling the sheet-like mass into a desired shape, and sintering and magnetizing the shaped ferrite.