Sealing of container closure

Details Sealing of container closure Sealing of container closure

1988-08-11

1989-08-29

Elkins, Gary

Special receptacle or package

With pallet feature

Knockdown or collapsible type

53373, 53477, 53DIG2, 22912542, 493133, 493184, B65D 574

Patent

active

048609021

ABSTRACT:
A spouted, gable-topped carton has its top closure fin sealed by welding employing an ultrasonic horn and an anvil giving a suitable profile of contour sealing of the fin. There is a straight continuous lengthwise seal where the fin is two-ply and a meandering continuous lengthwise seal where it is four-ply, while the sealed portions of the four-ply spout part of the fin are of lesser total extent in proportion to the area of that spout part than are the sealed portions of the other four-ply part of the fin in proportion to its area.

REFERENCES:
patent: 3116002 (1963-12-01), Crawford et al.
patent: 3322324 (1967-05-01), Persson
patent: 3555975 (1971-01-01), Barnes
patent: 3956975 (1976-05-01), Egleston et al.
patent: 4206867 (1980-06-01), Skjelby
patent: 4251303 (1981-02-01), Deimel et al.
patent: 4403465 (1983-09-01), Bachner

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