Rigid fiberboard

Details Rigid fiberboard Rigid fiberboard

1993-04-19

1994-09-13

Morgan, Kriellion S.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 14, 524 15, 524315, 524451, C09D 1300, C08K 1100

Patent

active

053469305

ABSTRACT:
A rigid fiberboard suitable as a replacement for the natural woods presently used for the manufacture of pencils is provided. The fiberboard essentially comprises a fiber network, together with a filler and binder. A lubricant is added to improve the sharpening characteristics of the fiberboard, and dimensional stability is preserved by incorporating a waterproofing agent to minimize the absorption of water by the fiber network.

REFERENCES:
patent: 2705197 (1955-03-01), Seybold
patent: 2988784 (1961-06-01), Lorenian
patent: 3843756 (1974-10-01), Talbott et al.
patent: 3993408 (1976-11-01), Arons et al.
patent: 4176978 (1979-12-01), Ruzicka et al.
patent: 4371632 (1983-02-01), Grossman et al.
patent: 4479912 (1984-10-01), Bullock

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