Apparatus for the heat treatment of insulating materials using microwave energy and hot gas
AssigneeIsover Saint-Gobain
InventorsBernard Bichot, Bernard Louis
Life of this patent
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Abstract
For heat treating products having a substantially circular cross section and being composed of mineral fibers containing a binder in solution in water, a metal container impervious to microwaves and equipped with a conveyor device includes a source of hot gas which is directed to the surface of the product. The conveyor in the form of a movable belt and a ceiling of fixed plates cooperate to roll the products during transport through the container so that their displacement is half of the speed of the belt.
Claims8
Apparatus for the heat treatment of products based on mineral fibres containing a binder in solution in water, capable of being hardened by reactions of polymerisation and/or polycondensation, comprising:
- a metal container impervious to microwaves and equipped with a conveyor device for conveying the products through said container, said products comprising discrete objects having a substantially circular cross section;
- at least one source of ultra-high frequency microwave radiation directed in a direction towards the objects;
- a source of hot gas which gas is directed to the surface of the objects, the conveyor device comprising, means for rolling said objects substantially without sliding about an axis forming an angle other than zero with the direction of the microwaves,
- wherein the conveyor device and means for rolling comprise, in combination, a movable belt and a ceiling of fixed plates, between which, and in contact with which, may be situated the objects, the displacement of the belt causing the displacement of the objects at half the speed of the belt and causing the rolling thereof.
Dependencies are inferred from the claim text.