Spray UP


Spray-up:  Spray-up uses continuous fiberglass roving fed into a "chopper gun" that chops the roving into shorter strands These chopped strands are sprayed into a resin stream and deposited onto the mold. The laminate is manually rolled to remove any air pockets and to produce a consistent part.  18 oz. woven roving glass reinforcement is also added by hand layup to the part for great strength.  Once the resin cures, the cured part is then removed from the mold.

Robotic Spray-Up

DL Robot Booth

DL Cabinet Base

Robotic spray-up:  This process is similar to the hand spray up, except it is done automatically by a robotic arm. An operator programs the robot to apply a uniform fiberglass laminate on a mold.  18 oz. woven roving glass reinforcement is also added by hand layup to the part for great strength.  After programming, the robotic arm then automatically sprays the resin stream and chopped strands of fiberglass on the mold.

Compression Molding (SMC)

PRMC Press


Compression molding:  Compression molding is a mass production method where molding compounds and other resin glass combinations are compressed in matched metal tools located between the platens in a press. High pressures and temperatures are used to mold and cure the product. Typical cycle times of 2 - 3 minutes are achieved. Molding compounds comprised of a thermoset resin, chopped roving, fillers and a catalyst are used in sheet form (SMC). SMC is placed in the tool to produce parts such as our PRMC pedestals, CGS ground sleeves and CBP Box Pads.

Injection Molding

Injection Molding


Injection molding:  Injection molding is a closed-molding process where polymer resins are injected into closed match metal molds. Polymers are thermoplastic, and processed by heating the material to its melting point and injecting it into the cooled mold. PSP pedestals are made by this process.

Cold Press Molding

Cold Press


Cold press molding:  Cold press molding also uses matched metal tools mounted into a press. Reinforcements, usually continuous filament mats (CFM), are placed into the tool and filled polyester resin is poured into them. The press is closed and the part is cured. The process requires lower pressures and temperatures when compared to compression molding.  Cycle times are longer as well.  The GSC-37-43 cover is made by this process.

Rotational Molding



Rotational molding:  Rotational molding process uses a molding machine that has a loading, heating, and cooling area. Several molds may be placed in the machine at the same time. Finely ground plastic resin is loaded into each mold.  The molds are moved into the oven where they are slowly rotated on both the vertical and horizontal axis. The melting resin sticks to the hot mold and coats every surface evenly. The mold continues to rotate during the cooling cycle so the parts retain an even wall thickness. Once the parts are cooled, they are removed from the mold.  The PSPF and PSPS pedestals are produced using this process.