Mat having long and short inorganic fibers
Assignee3M Innovative Properties Company
InventorsClaus Middendorf, Juergen Strasser, Knut Schumacher
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Abstract
The present invention provides a mat comprising a layer having a mixture of long and short fibers wherein said short fibers have a length of not more than about 13 mm and wherein said long fibers have a length of at least about 20 mm and wherein the amount of said short fibers is at least about 3% by weight based on the total weight of said mixture of long and short fibers.
Claims20
A mat comprising a layer having a plurality of inorganic fibers comprising a mixture of long and short inorganic fibers constituting at least 50% by weight of said plurality of fibers in said layer, said short fibers having a length of not more than about 13 mm, said long fibers having a length of at least about 20 mm, the amount of said short fibers being at least about 3% by weight based on the total weight of said mixture of long and short fibers.
Dependencies are inferred from the claim text.