Patent · US Expired

Apparatus for distributing melt in a multi-level stack mold

US6575731B1 · kind B1 · utility

21Cited by
7References
11Claims
0Family size

Inventors

Key dates

Filing dateMay 10, 2000
Grant dateJun 10, 2003
Priority date
Expiry dateMay 10, 2020

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB29C45/322
  • WIPO fieldOther special machines
  • WIPO sectorMechanical engineering

Abstract

An improved melt distribution system and method is provided for a multi-level stack mold having three or more moving platens. The injection machine communicates with a bifurcated sprue bar for providing pressurized melt through the first moving platen to a central distribution manifold in the second moving platen. From the central distribution manifold, the flow of pressurized melt is distributed to the first and third platens for transfer to a plurality of mold cavities.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.