Method of making thermoplastic hardboard from acetylated mat

Details Method of making thermoplastic hardboard from acetylated mat Method of making thermoplastic hardboard from acetylated mat

1982-12-27

1983-11-29

Ives, P.

Coating processes

With post-treatment of coating or coating material

Heating or drying

427397, 427254, 428537, 428541, 162125, 162221, 162150, 162182, 1621577, B32B 2304, D21F 1100

Patent

active

044181019

ABSTRACT:
A wet-felted mat of wood fibers is acetylated by coating the mat with a quantity of acetic anhydride ranging from 5 to 70% by volume of the mat and heating the mat at a temperature of from 150.degree. to 300.degree. F. while confining substantially all of the acetic anhydride within the mat for about 20 to 120 minutes. The acetylated mat is pressed into hardboard which may be bent into a variety of loops, spirals, helices, and other curvilinear shapes to make articles of furniture, protective packaging products and the like.

REFERENCES:
patent: 2215244 (1940-09-01), Linzell
patent: 2417995 (1947-03-01), Stamm et al.
patent: 3094431 (1963-06-01), Goldstein et al.

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