The case is wrapped around the product, hot-melt glued and tamped and squared in the compression station to make a very tight case. All of this is necessary to preserve the shape of the cheese block during conveying, palletizing and shipping.
Case packing preserves shape of product
The Cheese Block Case Packer from Massman receives a standard 40# cheese block, wraps a sleeve around it (for stacking strength and to retain the shape of the cased block) and pushes the sleeved block into a wraparound case. See how it's done in this video.