Claims
- 1. A method of manufacturing a wood based panel comprising the steps of:
- mixing wood fibers, an inorganic cellular material, and a flame retardant, wherein the mixture proportions per 100 parts by weight of said wood fibers being at least 50 parts by weight of said inorganic cellular material, and 15 parts to 60 parts by weight of said flame retardant;
- applying a binder to the mixture; and
- subsequently hot press forming the mixture to form the wood based panel,
- wherein the wood fibers are a major component and the steps are carried out so that the wood based panel possesses a density of 0.27 g.multidot.cm.sup.-3 or less.
- 2. The method of manufacturing a wood based panel of claim 1, wherein the flame retardant is added at the step of mixing the wood fibers and the inorganic cellular material.
Priority Claims (4)
Number |
Date |
Country |
Kind |
4-77869 |
Mar 1992 |
JPX |
|
4-116438 |
May 1992 |
JPX |
|
4-192531 |
Jul 1992 |
JPX |
|
4-262421 |
Sep 1992 |
JPX |
|
Parent Case Info
This application is a continuation of Ser. No. 08/389,173 Feb. 15, 1995 now abandoned, which is a division of application Ser. No. 08/040,647, filed Mar. 31, 1993 patent granted Jun. 6, 1995 and U.S. Pat. No. 5,422,170.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4242398 |
Segawa et al. |
Dec 1980 |
|
4661398 |
Ellis |
Apr 1987 |
|
Foreign Referenced Citations (3)
Number |
Date |
Country |
2059163 |
Jun 1972 |
NLX |
710077 |
Oct 1970 |
ZAX |
2167060 |
May 1986 |
GBX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
40647 |
Mar 1993 |
|
Continuations (1)
|
Number |
Date |
Country |
Parent |
389173 |
Feb 1995 |
|