Heat control for ultrasonic pattern rolls

Details Heat control for ultrasonic pattern rolls Heat control for ultrasonic pattern rolls

1977-05-12

1978-05-09

Whitby, Edward G.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156498, 1565802, 228 1R, 165 2, 165 90, 264 23, 432236, B32B 520

Patent

active

040885194

ABSTRACT:
Means and method for preventing distortion in ultrasonic pattern rolls used for quilting layers of thermoplastic material by ultrasonic energy, whereby uniformity of seal quality is maintained. The method contemplates the distribution of heat generated in the roll during warmup over the entire mass of the roll to eliminate distortion from true cylindrical shape, whereby the tendency of the roll to bow out of round resulting in high and low areas with each revolution and the formation of correspondingly uneven welds is eliminated.

REFERENCES:
patent: 2354714 (1944-08-01), Strickland
patent: 2582581 (1952-01-01), Bona
patent: 2587211 (1952-02-01), Piazze
patent: 3022814 (1962-02-01), Bodine
patent: 3292838 (1966-12-01), Farley
patent: 3529660 (1970-09-01), Obeda
patent: 3831341 (1974-08-01), Gauntlett
patent: 3939033 (1976-02-01), Grgach et al.

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