Messerschmitt-Bolkow-Blohm Gesellschaft MIT Beschrankter Haftung

Helmut Dederra

Winfried Brunner

A press mold half for producing records comprises a mould half having a psing surface thereon, and a channel system beneath the surface for conducting heating and cooling fluids in indirect heat transfer relationship with the surface. The channel system includes spaced apart inflow and outflow fluid collecting chambers, and a number of channels extending over given paths between the chambers, the overall cross section of the channels in regions adjacent the outflow collecting chamber is less than the smallest overall cross section of the channels over the remainder of their paths, thereby resulting in uniform heating and cooling of the material being pressed.

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Ottobrunn, Germany

Helmut Dederra