Higher tooling cost in addition of 'pick and place' robotic mechanism and label magazine.
Longer set-up time compared to blow modling machines and increase in scrap and labour time.
Frequent changes in tooling decrease economical advantages. It requires longer runs.
Unexpected order run reduction through the retailer can leave unusable container in stock and increase of order run causes to use PS label, because IML production for short run is very expensive and lead time is longer than PS labels.