Patent · US Expired

Preheating particles in manufacture of pressed board

US5733396A · kind A · utility

6Cited by

2References

1Claims

0Family size

Assignee

G. Siempelkamp GmbH & Co. · DE

Inventors

Klaus Gerhardt · Rheurdt, DE
Armin Rapp · Gau-Algesheim, DE
Michael Schöler · Rheurdt, DE
Hans-Dietrich Sitzler · Nettetal, DE

Key dates

Filing date	Jan 17, 1997
Grant date	Mar 31, 1998
Priority date	—
Expiry date	Jan 17, 2017

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S264/65
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

In order to preheat a particle mat having upper and lower faces and edges to a predetermined desired temperature for pressing into a pressed board air is conditioned to a temperature below 100.degree. C. and a moisture content together imparting to the conditioned air a dew point generally equal to the desired temperature. This conditioned air is simultaneously introduced from above and below at the same rate into the respective faces of the mat to produce in the mat a pair of horizontal and vertically approaching fronts at which moisture condenses out of the conditioned air. Introduction of the conditioned air into the mat is ended when condensed moisture and the conditioned air are forced out of the edges of the mat.

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