Process for the production of needle felt from rock wool

Details Process for the production of needle felt from rock wool Process for the production of needle felt from rock wool

1989-09-26

1991-10-15

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156 622, 156296, 28112, 28107, 428289, 428235, B32B 1700

Patent

active

050571737

ABSTRACT:
By combining two measures, namely by using rock wool fibers with a particularly low fiber thickness, and by adding an avivage agent with an unusually high viscosity, it is possible to needle a rock wool felt, without adding any other fibers, to produce a needle felt with high strength and good bendability. If the needle felt is subsequently relaxed with heat treatment, and the avivage agent is also expelled during this treatment, the needle felt is then available as a pure rock wool needle felt, free of any organic additives.

REFERENCES:
patent: 1899056 (1933-02-01), Powell
patent: 1916011 (1933-06-01), Mottweiler
patent: 2707690 (1955-05-01), Pearson
patent: 3331669 (1967-07-01), Sinclair

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