David G Pyles

US Patent:

20090188642, Jul 30, 2009

Filed:

Jan 24, 2008

Appl. No.:

12/019389

Inventors:

Paul H. Pittman - Muldane KS, US
David G. Pyles - Vernon TX, US

Assignee:

AGRIBOARD INDUSTRIES - Wichita KS

International Classification:

D04H 1/58

US Classification:

162201

Abstract:

An improved method for making compressed structural fiberboard by extruding agricultural fibrous matter into said compressed structural fiberboard. The improved method of the present invention includes providing a preselected volume of agricultural fibrous matter and preconditioning the agricultural fibrous matter to have a predetermined moisture level therein. The agricultural fibrous matter is separated and cleaned, and steam is added to the agricultural fibrous matter until a predetermined level of moisture is reached within the agricultural fibrous matter. A predetermined level of borax is also added to the agricultural fibrous matter to prevent the formation of bacteria within the agricultural fibrous matter. The agricultural fibrous matter is conveyed throughout the process on conveyors having variable drives, wherein the level of the agricultural fibrous matter on the conveyors is sensed such that a signal is provided to the variable drives to adjust the speed of the conveyors in order to provide a predetermined level of agricultural fibrous matter. The agricultural fibrous matter is then extruded to form a compressed structural fiberboard.