a method of and apparatus for spraying a molten thermoplastic polymer composition onto a substrate . the thermal spray apparatus of the present invention includes a source of pressurized molten polymer material , a source of pressurized hot gas , and a spray head which is in fluid communication with the source of pressurized molten polymer material and a source of pressurized hot gas . the pressurized hot gas forms a flowstream as it exits the spray head and acts to atomize and transport the molten polymer material , in a molten state , to the substrate so that the substrate is coated . the molten polymer is atomized into relatively uniform particulates of molten plastic which aids in applying a uniform coating to the subject substrate . it is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure . it is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims . 37 c . f . r . § 1 . 72 .