Drying and gas or vapor contact with solids – Process – Gas or vapor contact with treated material
Reexamination Certificate
2005-09-20
2005-09-20
Esquivel, Denise L. (Department: 3749)
Drying and gas or vapor contact with solids
Process
Gas or vapor contact with treated material
C034S446000, C427S394000
Reexamination Certificate
active
06944968
ABSTRACT:
A process for drying/heat-treating nonwoven webs in which the web is partially dried under tension in a first drying zone and further heat treated under low tension or in a substantially tensionless state a second drying zone. The process significantly reduces the occurrence of stretch-type defects in the nonwoven webs.
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Robert J. Poterala, “The Importance of Air Levitation in Drying High Quality Coated Fabrics”, Journal of Coated Fabrics, Jan. 1996, pp 190-204, vol. 25, Technomic Publishing Co., Inc.
“Sit Back and Relax”, The International Dyer, 2000, pp. 27-, 185/3.
Cleary John C.
Davis Michael C.
McCoy Todd A.
Rudisill Edgar N.
E.I. du Pont de Nemours and Company
Esquivel Denise L.
O'Malley Kathryn S.
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