Patent ID: 7717357

Claim:
A process for insulating a desired surface with spray foam insulation which comprises: (a) pressurizing at least two storage volumes containing chemical components of polyurethane spray insulation to a pressure less than or equal to about 200 psi; (b) attaching one end of a pair of heatable conduits to said storage volumes; (c) attaching opposed ends of said conduits to a mixing and dispensing nozzle, said nozzle comprising: (i) a body; (ii) a removable nozzle attached to said body, (iii) said nozzle having a static mixing means within said nozzle; (iv) said nozzle further having a pair of lips diverging at an angle of between about 8° and 15° inclusive; and (v) said nozzle further having a pair of opposed essentially triangular-shaped notches at each end of said lips; and (d) dispensing said insulation on said desired surface at an application rate greater than or equal to approximately 70 Ft 2 /min.