Our plant runs 24/7 with 12 hour shifts. We have a master lot number that is applied to the product as long as it is being continuously produced. We also have a production run number that is shift and day specific. If the product is changed, even as much as changing the size of the bags or the configuration of the pallets, it gets a new master lot number.
So we know that all of a particular master lot were manufactured in the same manner, but the bags produced in a specific production run used specifically identified raw materials by specific personnel. It makes an entire production run identifiable, yet allows for daily traceability.
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