Fluff-type organic insulating pulp and method of fabrication

Details Fluff-type organic insulating pulp and method of fabrication Fluff-type organic insulating pulp and method of fabrication

1991-03-01

1992-10-20

Scherbel, David A.

Static structures (e.g., buildings)

Machine or implement

523091, 52404, 239 8, 162159, E04B 200, B05B 700

Patent

active

051559641

ABSTRACT:
An insulating pulp for insulating buildings and other type structures and wherein the pulp is formed of organic fibers having a fiber length of from about 1.0 mm to 3 mm. Such pulp is obtained by a chemi-thermomechanical pulping process and the pulp may be supplied in fluff form or compressed sheet form which is later defibrillized. A fire retardant additive and a corrosive buffing agent is added to the pulp. A major characteristic of such insulating pulp is that it has a density in the range of from about 0.7 to 2.0 lbs/ft.sup.3 and has an excellent thermal insulation value of about R3 to R4 per inch. The chemi-thermomechanical wood pulp is produced from debarked trees which are primarily black spruce which have these long and strong fibers. The pulp is applied by injecting it through a compressed air conduit and at the same time an adhesive is injected in the pulp to form a binding agent. Because of the property of the fibers and the fiber distribution in the fluff, the pulp is also an excellent acoustical insulator.

REFERENCES:
patent: 4134242 (1979-01-01), Musz et al.
patent: 4712347 (1987-12-01), Sperber
patent: 4768710 (1988-09-01), Sperber
patent: 4829738 (1989-05-01), Moss

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