HydroHoist Marine Group recently made a significant investment in a new foaming operation to further improve
quality of their products.
“We are one of only a few in our industry to utilize this process in-house; which means we control the quality
of our product start to finish,” said CEO Mick Webber.
The new HP Extreme Drive-On port is the first product to see the benefits of the EPS molding process.
The Manufacturing Process
EPS (expanded polystyrene) foam literally begins as a raw bead. The raw beads are expanded using steam, creating
pre-expanded beads, the expanded beads are released into a bed dryer and all condensed steam moisture
is dried from the surface.
After the expanded beads have been dried, they are blown into large open storage bags for the aging process.
After the aging is finished, the beads are ready for molding. The molding process involves taking the loose expanded beads and using a vacuum system to fill the cavity and evacuate the residual air. Once the port is filled it is placed into a steam fixture. Steam is applied using probes that reach into the port and apply the predetermined
set point. The heat from the steam and subsequent pressure increase cause the beads to further expand.
The beads are expanded to fill any voids between them causing the soft surfaces to fuse together into a solid structure. A computer releases the pressure after it reaches the cycle time. The loose beads are now fused into a solid block.
“What this all means is that we have a highly sophisticated process to help reduce leak elimination from our products. Our in-house process is something most of our competitors do not offer, and we believe what helps keep HydroHoist as the number one choice – our quality can’t be beat,” said HydroHoist Engineer Jonathan Lancaster.