Patent ID: 9021771
Filing Date: 2015-05-05
Classification: B29C,B29L,B65B

Abstract:
1. A method of controlling a sealing appliance, comprising: sensing with a first sensor a first temperature of at least one heat sealing element of the sealing appliance; dynamically determining with a programmable logic device first values for a variable sealing time and a variable dwell time based on a first sensed value for the first temperature, where the variable sealing time comprises a first amount of time needed to energize and heat the heat sealing element to a pre-determined temperature tier sealing a container and the variable dwell time comprises a second amount of time needed to cool the heat sealing element after sealing the container; providing an actuation control signal to the heat sealing element for a time duration specified by the first value previously determined for the variable sealing time; and extinguishing a seal indicator light subsequent to expiration of the variable sealing time and the variable dwell time; wherein a plurality of values for the first temperature of the heat sealing element and a plurality of values for the variable sealing time and the variable dwell time that correspond to the plurality of values for the first temperature are stored in a look-up table accessed by the programmable logic device.