Suppose a tractor is harvesting a field of grain, but the field contains, lets say, 1 plastic bottle. What will happen to the plastic bottle? Will it get shredded and contaminate the grain?
In: Technology
Food plants have machines where they launch products across an air gap and cameras look for anomalies and use perpendicular air jets to blow foreign material to a reject bin. Plastic would be the wrong color so it would be rejected. If it flies differently it would be rejected as well.
They have metal detectors too
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