Method of applying a polyurethane adhesive to a substrate
View Patent ↗A system and method for applying a two-part adhesive to a substrate includes a prime mover for providing an output torque, a first pump connected to the prime mover for receiving the output torque, the first pump having an inlet and an outlet, a second pump connected to the prime mover for receiving the output torque, the second pump having an inlet and an outlet, a first compound in communication with the inlet of the first pump, a second compound in communication with the inlet of the second pump, a first accumulator in communication with the outlet of the first pump, a second accumulator in communication with the outlet of the second pump, a first manifold in communication with the outlet of the first pump, and a second manifold in communication with the outlet of the second pump.
1. A method for applying a two-part polyurethane adhesive to a substrate, the method comprising:
providing an isocyanate blend in a first package, wherein the isocyanate blend exhibits less than a 20% change in viscosity over 60 minutes when exposed to atmosphere between approximately 0 degrees F. and 120 degrees F., and wherein the first package has a first opening and a first cap secured to the first opening;
providing a polyol blend in a second package, wherein the second package has a second opening and a second cap secured to the second opening;
removing the first cap and the second cap thereby exposing the isocyanate blend and the polyol blend to air;
attaching a first connector to the first opening and attaching a second connector to the second opening;
connecting the first connector to an applicator device and connecting the second connector to the applicator device;
activating a prime mover for providing an output torque;
a pump receiving the output torque from the prime mover through a gear box;
pumping the isocyanate blend from the first package and the polyol blend from the second package using the pump;
mixing the isocyanate blend with the polyol blend; and
applying the mixed isocyanate blend and polyol blend onto the substrate.
2. The method of claim 1 wherein providing an isocyanate blend in a first package includes providing an isocyanate blend with less than about 33% isocyanate by weight in the first package.
3. The method of claim 1 further comprising placing the first package and the second package on the applicator device.
4. The method of claim 3 further comprising inserting the first connector through an aperture in the applicator device and inserting the second connector through the aperture in the applicator device.
5. The method of claim 4 wherein attaching a first connector to the first opening includes attaching a first connector having a first valve to the first opening.
6. The method of claim 5 wherein attaching a second connector to the second opening includes attaching a second connector having a second valve to the second opening.
7. The method of claim 6 wherein connecting the first connector to an applicator device includes opening the first valve and connecting the second connector to the applicator device includes opening the second valve.