Two station sonic sealing apparatus and method

Details Two station sonic sealing apparatus and method Two station sonic sealing apparatus and method

1976-05-26

1978-02-07

Lake, Roy

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

93 441R, 93DIG1, 156 731, 1565801, B31B 166

Patent

active

040720896

ABSTRACT:
Apparatus for forming a seal between layers of a carton of thermoplastic coated paperboard material and the like wherein the thermoplastic material in the area to be sealed serves as the sealant and is activated to flow by frictional heat generated by a vibration welding horn and is then allowed to cool and set under pressure to form the seal between the layers. The carton first moves to an activating station wherein the layers to be sealed are engaged on opposite surfaces by a vibrating horn and a back-up means for a time sufficient to activate the thermoplastic material to flow. The carton is then carried to one or more clamping and sealing stations at a different location from the activating station with the thermoplastic material in the activated state. The layers to be sealed with the activated thermoplastic is then engaged on opposite surfaces by a pressure pad and a back-up means for a predetermined period of time to permit the activated thermoplastic to cool and set and form a seal.

REFERENCES:
patent: 3166994 (1965-01-01), Egleston
patent: 3183801 (1965-05-01), Egleston
patent: 3239995 (1966-03-01), Monroe et al.
patent: 3905280 (1975-09-01), Egleston et al.
patent: 3956046 (1976-05-01), Tsuchiya et al.
patent: 3958501 (1976-05-01), Richards

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