Method for steam pressing composite board having at least one finished surface

Method for steam pressing composite board having at least one finished surface

A method for making a composite wood product, comprising the steps of forming a mat comprising wood particles treated with uncured binder, the mat having opposite first and second sides, consolidating the mat to a final thickness in a sealed press cavity, supplying a first quantity of steam through...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BONOMO, BRIAN, WALSH, PETE, VERGARA, ALEX, MOEHR, KELLY, MERRELL, MICHELLE
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS
MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUTORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTINGOF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
NAILING OR STAPLING MACHINES IN GENERAL
PERFORMING OPERATIONS
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL
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Beschreibung
Zusammenfassung:A method for making a composite wood product, comprising the steps of forming a mat comprising wood particles treated with uncured binder, the mat having opposite first and second sides, consolidating the mat to a final thickness in a sealed press cavity, supplying a first quantity of steam through said first side of the mat to at least that portion of the thickness of the mat that is not occupied by a quantity of excess air, said first quantity of steam supplied to said portion of the thickness in a pressure and for a period of time sufficient to raise the temperature of said portion of the mat to at least 100°C; venting the mat through said first side such that the quantity of excess air is purged from the mat; and supplying a second quantity of steam through said first side at a temperature and pressure sufficient to cure the binder throughout the thickness of the mat.