Multi-function heat exchanger

A method of dispensing a hot melt adhesive material that can be heated from a lower temperature flowable non-molten liquid state to a higher temperature molten liquid state, the method comprising:

• pumping the hot melt adhesive material in the lower temperature flowable non-molten liquid state through a supply conduit to a heat exchanger assembly comprising a heating element, wherein the hot melt adhesive material flows from the supply conduit through a heat dissipating assembly to the heat exchanger assembly, and wherein the heat dissipating assembly prevents heat from the heating element in the heat exchanger assembly from heating the hot melt adhesive material in the supply conduit above the lower temperature flowable non-molten liquid state;
• heating the hot melt adhesive material in the heat exchanger assembly to the higher temperature molten liquid state using the heating element;
• and
• dispensing the hot melt adhesive material in the higher temperature molten liquid state from a dispensing gun in fluid communication with the heat exchanger assembly.

A method for producing packaging, the method comprising:

• providing a hot melt adhesive material that can be heated from a lower temperature flowable non-molten liquid state to a higher temperature molten liquid state;
• pumping the hot melt adhesive material in the lower temperature flowable non-molten liquid state through a supply conduit to a heat exchanger assembly comprising a heating element, wherein the hot melt adhesive material flows from the supply conduit through a heat dissipating assembly to the heat exchanger assembly, and wherein the heat dissipating assembly prevents heat from the heating element in the heat exchanger assembly from heating the hot melt adhesive material in the supply conduit above the lower temperature flowable non-molten liquid state;
• heating the hot melt adhesive material in the heat exchanger assembly to the higher temperature molten liquid state using the heating element;
• dispensing the hot melt adhesive material in the higher temperature molten liquid state from a dispensing gun in fluid communication with the heat exchanger assembly;
• disposing the hot melt adhesive dispensed from the dispensing gun in the higher temperature molten liquid state between a first cellulosic substrate and a second cellulosic substrate;
• and
• compressing the first cellulosic substrate and the second cellulosic substrate together with the hot melt adhesive material disposed therebetween until the hot melt adhesive material cools and thereby bonds the first cellulosic substrate and the second cellulosic substrate together.