There have 12 microns, 14 microns, 22 microns, and 38 microns. The other thickness also accepts custom.
12 micron and 14 microns normally used to make the chocolate foil for bonbons, truffles.
22 micron is used to make the corrugated foil wrapper, and someone also likes this thickness to make the chocolate bar wrapper.
38 microns aluminum foil used to make the coin chocolates.
2.What the thickness of the foil backing paper?
Aluminum foil thickness could make in 6.5 microns, 9 microns and 12 microns.
Paper thickness common has 28gsm, 32gsm,35gsm and 40gsm. Of course, the paper thickness could use thicker instead depends on the different users. Most used is aluminum foil(6.5 micron) + glue +paper(32gsm).
Contact us if you want to custom the different thickness foil wrappers.