Press mould half, more especially for producing records

US4245811A · kind A · utility

Assignee

• Messerschmitt Bolkow Blohm GmbH · DE

Inventors

• Winfried Brunner · Unterhaching, DE
• Helmut Dederra · Ottobrunn, DE

Key dates

• Filing date: May 31, 1979
• Grant date: Jan 20, 1981
• Expiry date: May 31, 1999

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29L2017/003
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

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.