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US 5,167,738 AGranted
Recycling of fibrous products in a production line for manufacturing mats from fibers
AssigneeIsover Saint-Gobain
InventorsBernard Bichot, Gerardus P. M. Van Oers, Cornelis G. A. Bakx
Life of this patent
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Abstract
For producing mineral fiber mats, the flock emanating from the waste to be recycled is stored and classified according to density. Furthermore, the reintroduced quantities are precisely measured and the flock is caused to burst open. Thus it is possible to reintroduce substantially larger quantities without altering either the appearance or the characteristics of the product obtained.
Claims6
A method of producing a mineral fiber mat, comprising the steps of:
- forming a mat of mineral fibers from a fiber bearing gas stream;
- producing a product from the mat;
- separating waste portions of the mineral fiber mat from the product;
- storing the mineral fibers from the waste portions according to the densities thereof;
- metering the stored mineral fibers as a function of the weights thereof;
- and
- adding the metered mineral fibers to the gas stream forming the mat.
4 more elements
Dependencies are inferred from the claim text.