Method for producing pressed products using wood or vegetable ma

Details Method for producing pressed products using wood or vegetable ma Method for producing pressed products using wood or vegetable ma

1993-05-28

1994-11-22

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Stratified or layered articles

264115, 264120, 264123, 264126, B29C 4300

Patent

active

053666771

ABSTRACT:
Ecologically safe constructional materials, and particularly large-sized constructional structures such as wall plates can be economically produced. Wood or another vegetable material ground to the particle size of not more than 2.times.10.sup.-3 m, dried to 9-11% moisture content, heated by heating the press-mold to the 200.degree. to 220.degree. C. temperature and adding ground material heated at least 120.degree. C., and loaded it into the press-mold for 1 to 1.5 min. per 1.times.10.sup.-3 m of produced pressed material. After that, pressing is done in a hermeticly sealed press-mold at this temperature at a pressure of not less than 30.0 MPa with exposure to this pressure for 1 to 1.5 min. per each 1.times.10.sup.-3 m of produced pressed material followed by cooling of press-mold without depressurization at full pressure.

REFERENCES:
patent: 4111744 (1978-09-01), Reiniger
patent: 4627951 (1986-12-01), Shen
patent: 5093051 (1992-03-01), Reiniger

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