Fiberboard manufacture

Details Fiberboard manufacture Fiberboard manufacture

1976-04-14

1977-11-01

Spicer, Jr., Robert L.

Plastic article or earthenware shaping or treating: apparatus

Air felting type shaping means

4253241, 425223, 425404, 425DIG201, B29J 500

Patent

active

040563421

ABSTRACT:
This invention relates to an improved process and apparatus system for the continuous production of thin fiberboard products wherein a binder-impregnated wood fiber mat is continuously formed and then continuously and successively passed through a conditioning zone where the mat temperature is adjusted to about the glass transition temperature of the ligneous hemicellulosic matrix material of the wood fiber at a moisture content from about 6% to 12% by weight, prepressed to reduce the bulk thereof and substantially eliminate entrained air therefrom, hot pressed at a temperature and for a time sufficient to reduce the mat to the final thickness desired and to initiate but not to complete cure of the binder, and thereafter subjected to a temperature sufficient, but not above about 350.degree. F., and for a time sufficient to complete binder cure and mat consolidation.

REFERENCES:
patent: 1862318 (1932-06-01), Ruby
patent: 2356826 (1944-08-01), Coss et al.
patent: 2457784 (1948-12-01), Slayter
patent: 2546266 (1951-03-01), Kropp
patent: 2997096 (1961-08-01), Morrison et al.
patent: 3230287 (1966-01-01), Caron et al.

Affiliated with

Also associated with

Rating

Fiberboard manufacture does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fiberboard manufacture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fiberboard manufacture will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-5512