Method of making a fibrous thermally insulating layer of coheren

Details Method of making a fibrous thermally insulating layer of coheren Method of making a fibrous thermally insulating layer of coheren

1983-09-21

1986-07-08

Bell, James J.

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

156 622, 264109, 264121, 428283, 428325, 428402, 428920, B27N 502

Patent

active

045992525

ABSTRACT:
In a method of making a fibrous thermally insulating layer of coherent structure, a quantity of fibers is treated with a binder, whereby prior to or during the treatment with the binder, fibers are formed into a quantity of particles each having a substantially rounded periphery and consisting of a number of short fibers and the particles treated with the binder are conveyed by means of a gas as conveying medium via an inlet piece 11, 13 to within a container 3, the particles being blocked by an outlet piece 8 for the container, the outlet piece 8 being formed with gas outlet apertures 10.
The particles are formed by vigorously agitating a number of flakes in a vessel, each flake consisting of arbitrarily arranged short fibers, and simultaneously applying pulsating forces to at least part of the volume of flakes, so that the flakes are converted into particles having a substantially rounded periphery and having a higher density than that of the flakes.

REFERENCES:
patent: 4104170 (1978-08-01), Nedza
patent: 4376675 (1983-03-01), Perrotta

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