Product comprising blend of hollow polyester fiber and crimped polyester binder fiber

Claim 1

A fiberfill blend for making into a batt for heat bonding of said batt to make the fiberfill especially suitable for garments, said blend consisting essentially of from 55 to 97% by weight of crimped hollow polyester fiber having a void content of from 8 to 30% by volume and, complementally to total 100%, 3 to 45% by weight of crimped binder fibers of a lower melting polyester than said hollow polyester fiber, said blend possessing properties for providing batts having, as compared to batts provided from a blend which is the same except that the same weight of solid polyester fiber has been substituted for the hollow polyester fiber in the blend: (a) higher filling power but at least as low bulk under load when heat bonded by convection or radiation heating, and (b) higher filling power and a surface formable into a higher cover, less porous bonded skin by contact heating of said surface accompanied by compressing said batt during said heating no more than 50% of the original thickness of said batt.