Method of and system for forming a fire door core
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United States of America Patent
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Aug 10, 2004
Grant Date -
Aug 1, 2002
app pub date -
Oct 10, 2001
filing date -
Oct 12, 2000
priority date (Note) -
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Abstract
A method and system of forming a fire door core. Hydraulic binder and resin are supplied from raw material bins and mixed to provide a submixture. Exfoliated vermiculite is then mixed with the submixture to provide a mixture that is deposited into a plurality of compression molds. Each of the filled molds are pressed in a press at a predetermined temperature at a predetermined pressure for a predetermined period of time sufficient to harden the mixture into a hardened slab. The hardened slabs are then removed from the molds, impregnated with water or steam in a water impregnation assembly and dried in a drying assembly.
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