Integrated stretch-wrap packaging system

Abstract From the Canadian patent

The disclosure concerns an integral weigh wrapper for wrapping products in stretch film by, weighing each product as it is placed on an infeed support surface, and feeding successive weight signals to a data processor. Successive signals are compared, and when a stabilized weight signal is received, as determined by the successive comparisons, the data processor produces a start signal which activates a drive motor to rotate one revolution. This initiates one cycle of operation of the weigh wrapper, in which the product is advanced from the infeed station to the wrapping station, a wrapping cycle is initiated for any product then in the wrapping station, and a previously wrapped product is …