Process for heat sealing a cover to a container

Details Process for heat sealing a cover to a container Process for heat sealing a cover to a container

1991-09-03

1993-01-26

Skapars, Anthony

Metal working

Method of mechanical manufacture

Electrical device making

1563099, H01M 200, B32B 3120

Patent

active

051819368

ABSTRACT:
Process for heat sealing a thermoplastic cover to a thermoplastic container wherein the cover has a channel formed thereon for receiving a sealing lip on the container walls. The lip and floor of the channel are melted and then cooled to form a solidified skin of thermoplastic over a molten core, the lip is mated with the channel and the melted portions thereof coalesced with the melt from the floor. Some of the coalesced melt exudes between the lip and the sides of the channel and solidifies to provide additional bonding. The produce produced by the process is also claimed.

REFERENCES:
patent: 3441448 (1969-04-01), Hayward et al.
patent: 3778314 (1973-12-01), Kano et al.
patent: 4460663 (1984-07-01), Stutzbach et al.

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