Jim Walter Corporation

The Georgia Marble Company

Edward L Moon

Alan R Koenig

David L Skinner

An apparatus and dry method for de-shotting shot-containing mineral wool fibers wherein the fibers are treated in a granulator to compact them into entangled nodules, and the nodules are passed through an air classifier to open up and de-shot them. In a preferred embodiment, a felted layer of mineral wool is subjected to a first granulation step to divide the layer into a multiplicity of lightly compacted nodules which are then partially de-shotted, and the partially de-shotted nodules are subjected to a second granulation step to more tightly compact the nodules before they are introduced into the air classifier.

Apparatus and method for producing shot-free mineral wool

An improved calcium carbonate filler in the form of a powder having a particle size distribution range and other identifiable physical characteristics produces unexpected results as a filler in resin molding compounds.

Growing community of inventors

St. Petersburg, FL, United States of America

Edward L Moon