The foil back in honeycomb design is made by lamination machines. There only glue the honeycomb when combine the foil and paper. Thus the between the foil and paper will have many spacing. So why use the honeycomb on foil back?
The interspace of honeycomb pattern could locked the heat for wrapped food, which will maintain hot longer. At the same time, aluminum foil have a good insulation effect. Thus the honeycomb foil wrapper is a perfect package for sandwiches and other takeaway food.
Normal the foil backing paper structure is aluminum foil and paper. If combine the foil and paper with full glue. The foil paper will can’t same soft like the honeycomb foil. The foil wrapper with honeycomb is easier wrap for food.
Foil wrapper with honeycomb is cheaper than the foil paper will full glue.