Ultrasonic bonding

Details Ultrasonic bonding Ultrasonic bonding

1981-08-06

1983-07-19

Wityshyn, Michael G.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Presses or press platen structures, per se

156296, 156553, 156555, 1565802, 1565831, 4251742, B29C 2708, B32B 3120

Patent

active

043942083

ABSTRACT:
An apparatus and method are provided for producing a non-woven fabric ultrasonically without unacceptable streaking. A fibrous batt is continuously fed in a first direction toward and past a plurality of vibration sources and anvil. Energy is supplied to the vibration sources so that bonding of the fibrous batt in a non-woven fabric takes place at the vibration sources and anvil. Significant migration of fibers of the batt is positively prevented just prior to passage of the batt into contact with the vibration sources so that a streakless bonded non-woven fabric is produced. Migration may be positively prevented by disposing a heated roller of hard material just upstream of the vibration sources, and providing a second compression roller upstream of the heated roller.

REFERENCES:
patent: 3575752 (1971-04-01), Carpenter
patent: 3733238 (1973-05-01), Long et al.
patent: 3765997 (1973-10-01), Dunning
patent: 3855045 (1974-12-01), Brock
patent: 3879256 (1975-04-01), Rust, Jr.
patent: 3949128 (1976-04-01), Ostermeier
patent: 4090897 (1978-05-01), Minick
patent: 4109353 (1978-08-01), Mitchell et al.
patent: 4128451 (1978-12-01), Sorce et al.
patent: 4259399 (1981-03-01), Hill

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