Adhesive transfer hose having a barrier layer and method of use

A multi-layered hot melt adhesive transfer hose, comprising:

• a flexible metal inner tube for transporting heated liquid hot melt adhesive and forming an impermeable barrier layer configured to prevent an ingress of oxygen from passing through the flexible metal inner tube and into the hot melt adhesive;
• at least one structural layer configured to withstand a fluid pressure;
• an outer covering overlaying and in contact with an exterior surface of the at least one structural layer;
• and
• a heater for maintaining the hot melt adhesive at a set point, wherein the heater is adapted to be electrically coupled to a power source controlled to maintain the set point to about 230° C. (450° F.) or less for an extended period of time.