Insulating material with transverse welds comprises two layers of bubble wrap with external protective coating, peripheral welds fixing layers together and spaced transverse welding lines forming series of closed compartments

摘要

The insulating material comprises two layers of bubble wrap (2,3) each defining an external and internal (4) face. There is a protective coating (5) extending over one of the external faces. Two peripheral welding lines (6) fix the two layers together. There are a series of transverse welding lines (7) which are spaced to form a series of closed compartments (8).