Polyester fiberfill and process
AssigneeE. I. Du Pont de Nemours and Company
InventorIlan Marcus
Life of this patent
Estimating the term…
Abstract
Polyester fiberfill having spiral-crimp that is randomly-arranged and entangled in the form of fiberballs with a minimum of hairs extending from their surface, and having a refluffable characteristic similar to that of down on account of the low cohesion between the balls. A process for making such fiberballs by repeatedly air-tumbling small tufts of such fiberfill against the wall of a vessel.
Claims18
Refluffable fiberballs of average dimension 1 15 mm, consisting essentially of randomly-arranged, entangled, spirally-crimped polyester fiberfill having a cut length of about 10 to about 60 mm, and having a cohesion measurement as defined of less than 6 Newtons (N).
Process for making polyester fiberfill having refluffable characteristics, wherein small tufts of polyester fiberfill having spiral-crimp are repeatedly tumbled by air against the wall of a vessel to provide an assembly of fiberballs having a cohesion value as defined of less than 6N.
Dependencies are inferred from the claim text.