Cellulosic fiber insulation and process of preparation

Details Cellulosic fiber insulation and process of preparation Cellulosic fiber insulation and process of preparation

1980-12-04

1982-09-14

Chin, Peter

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Mechanical defibration in the presence of heated gas or gas...

162 26, 162 80, 162159, 162183, D21B 116

Patent

active

043494137

ABSTRACT:
Thermal insulating material of cellulosic fibers is prepared by treating wood chips or other fibrous cellulosic material with saturated steam at elevated temperatures and pressures and then fiberizing the treated material. A fire-retardant chemical is added to the material immediately prior to fiberization. The resulting fiberized cellulosic material when dried exhibits superior flame and fire resistance properties.

REFERENCES:
patent: 2325055 (1943-07-01), Heritage
patent: 2454532 (1948-11-01), Walter
patent: 3388037 (1968-06-01), Asplund et al.

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