Warp yarn reinforced ultrasonic web bonding

Details Warp yarn reinforced ultrasonic web bonding Warp yarn reinforced ultrasonic web bonding

1983-04-15

1985-03-12

Wityshyn, Michael

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

156 732, 156296, 1565802, 428293, 428294, 428296, 428373, B29C 2708, B32B 3120

Patent

active

045045399

ABSTRACT:
A non-woven fabric is produced ultrasonically from a batt of ultrasonically fusible fibers and reinforcing yarns formed of bi-component fibers. The non-woven fabric produced has a layer of strong filament yarns integrated into the body of the non-woven fabric to increase the strength of the non-woven fabric without delamination of the components, and without degradation of the component yarns. The batt is continuously fed in a first direction toward and past a plurality of ultrasonic vibration sources and anvil means, which produce bonding sites in the fabric formed. A plurality of reinforcing yarns are taken-off a warp beam and laid atop the web prior to its passage into operative association with the vibration sources and anvil means. Energy is supplied to the vibration sources so that bonding of the fibrous batt into a non-woven fabric, and melting of the low-melt component of the reinforcing yarn fibers, takes place.

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