Forming a three dimensional fiber truss from a fiber slurry
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United States of America Patent
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Sep 17, 2002
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N/A
app pub date -
Apr 26, 2000
filing date -
Apr 26, 2000
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Abstract
A method is disclosed for forming from a fiber slurry a three-dimensional fiber truss. The forming method involves compressing a fiber slurry or a fiber pulp between a pair of rigid foraminous dies to rapidly drive out most of the carrier fluid. The fiber retained between the dies is compacted into a pre-form fiber truss. The pre-form fiber truss is subsequently dried and consolidated in a heated press to produce a finished fiber truss. In panel applications, the fiber truss can be used by itself, or combined with other fiber trusses, to form a light-weight structural core for sandwich panels. Sandwich panels have numerous uses in packaging, material handling, construction, and furniture industries. Specific products include bulk bins, heavy-duty boxes, shipping containers, wall panels, roof panels, cement forms, partitions, poster displays, reels, desks, caskets, shelves, tables, and doors. Other structures that can be formed using the disclosed method and apparatus include egg containers, produce trays, molded packaging inserts, and molded pallets.
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