| 摘要 |
A high density fiber product is made from natural lignin containing plant fibers. Plant fibers ranging in size below about 3000 microns in diameter are used. Binding agents and other additives may be mixed with the fibers to enhance product or process performance. The plant fibers or mixture of fibers and additives are heated to between about 50 degrees C. to about 140 degrees C. The heated fibers are compressed in a mold to an average density of about 50 pounds per cubic foot to about 100 pounds per cubic foot. Compression pressures of about 500 psi to about 2500 psi are used to achieve product densities within this range. The compressed fibers are cured under these temperature and pressure conditions. After the curing time has elapsed, the compressed fiber product is released from the mold and the mold may be reused. A high density product made from small plant fibers is provided.
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