Patent ID: 8096096

Claim:
A machine for packaging products in wrappers sheet material, comprising: a wrapping unit by which each product is enveloped in a wrapper and having at least two opposite faces disposed substantially parallel one with another; a unit by which the wrappers are subjected to a heat treatment, comprising a transport channel along which the products advance enveloped in respective wrappers, created between two conveyors with respective transport branches disposed facing one another and set in motion in such a way as to convey the wrappers by engaging in contact with a respective face of the wrapper, and at least one heating head associated with each transport branch, furnished with a leaf of dry lubricant offered in direct contact to the branch of the respective conveyor; wherein the heating head comprises a backing element, an electrically conductive heating foil positioned over the backing element, a first electrically insulating overlay positioned over the heating foil, and a second overlay provided by the leaf of dry lubricant, positioned over the first overlay.