B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
154/29.02
B65D 5/40 (2006.01) B65B 51/22 (2006.01)
Patent
CA 1140035
P-324 ULTRASONIC PACKAGING MACHINE ABSTRACT Apparatus is disclosed for forming a seal between layers of a carton of thermoplastic coated paperboard material and the like in a sealant activating station wherein the sealant is activated and a clamp- ing and sealing station wherein the sealant is allowed to cool and set under pressure to form a seal between the layers. The carton first moves to the activating station wherein the layers to be sealed are engaged on opposite surfaces by a vibrating horn and a movable first backup member in the form of an anvil for a time sufficient to activate the thermoplastic material which serves as sealant. A first adjustable overtravel spring assembly biases a first backup means. The carton then moves to the clamping and sealing station where a movable pressure pad and a second backup member engage the layers having the activated thermoplastic thereon for a predetermined period of time to permit the activated thermoplastic to cool, set and form a seal. A second adjustable overtravel spring assembly biases a pressure pad. The carton is carried by a con- veyor assembly, which is synchronized with the movement of the first back member and the pressure pad.
326096
Ex-Cell-O Corporation
Macrae & Co.
LandOfFree
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