D - Textiles – Paper – 04 – H
Patent
D - Textiles, Paper
04
H
117/123
D04H 1/06 (2006.01) D04H 1/54 (2006.01)
Patent
CA 1071943
ABSTRACT OF DISCLOSURE A resilient, thermally bonded, non-woven fibrous batt having a uniform compression modulus in one plane which is more than the compression modulus measured in a direction perpendicular to that plane, and a substantially uniform density across its thick- ness is obtained by preparing a batt comprising at least 20% by weight of crimped and/or crimpable conjugate fibres having or capable of developing a crimp frequency of less than 10 crimps per extended cm. and a decitex in the range of 5 to 30. The batt is termally bonded by subjecting it to an upward flow of a fluid heated to a temperature sufficient to heat the batt to a temperature in excess of the softening temperature of the lower softening component but below the softening temperature(s) of the other component(s) of the conjugate fibre to effect inter- fibre bonding. The thermally bonded batt is then cooled by an upward flow of cool air.
250118
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