Patent · US Expired

Platen for multistage panel press

US6668714B2 · kind B2 · utility

3Cited by

7References

7Claims

0Family size

Assignee

Siempelkamp Maschinen- und Anlagenbau GmbH · DE

Inventors

Klaus Wollny · Krefeld, DE
Otto Voss · Krefeld, DE
Klaus Nube · Moers, DE

Key dates

Filing date	Oct 26, 2001
Grant date	Dec 30, 2003
Priority date	—
Expiry date	Dec 6, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB30B15/064
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A press has at least two rigid and generally planar platens normally brought together to hot-press a panel workpiece. Each platen is formed with a plurality of parallel longitudinally throughgoing bores having ends open at edges of the platen, an array of orifices opening at at least one face of the platen and communicating with the bores between the ends thereof, at least one manifold passage extending transversely in the platen adjacent at least one of the edges and intersecting the bores, and a heat-exchange passage offset from the bores and manifold passage. A heat-exchange liquid is passed through the heat-exchange passages. The ends of the bores are closed, and a treatment vapor is injected under superatmospheric pressure into or withdrawn by subatmospheric pressure from the manifold passages so as to expel the vapor from the platens via the orifices or suck vapor from the platens in through the orifices.

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