Upon completion of the investigation, it was noted that a light brown 'spot' (approx.25" in diameter) was on the top pattie in the pack, directly around/below the area of the green string.The spot was produced when the string was welded to the cottonoid material.The cottonoid is formed from a rayon material.During processing this rayon material is broken down into small, loose fibers.If the fibers do not break down enough, a small cluster of fibers can result.This in turn creates a thick spot in the pattie.When the string is ultrasonically welded on this spot it absorbs more energy than the rest of the pattie and results in a burn.Root cause is likely due to operator error.Per the requirements of the specification the operator is required to inspect the front and back of the patties for any imperfections such as burn marks and also count the amount of surgical patties.A tr and course were opened to retrain all the operators that produce product on hybrid machines since a lot number was not returned with the complaint.Based on the results of this investigation, no further action is required.Trends will be monitored for this and similar complaints.At the present time this complaint is closed.
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