Background
At Baytech, we pride ourselves on solving complex molding challenges that others won’t touch. One standout example is our work on a unique underground stormwater storage module designed to sit beneath roads and pavements.
The catch? This part had to be mostly hollow—allowing for up to 95% volume storage—yet still strong enough to support the weight of large vehicles. No comparable product existed on the market. Making it work meant balancing efficiency, strength, and manufacturability, without compromise.
The Challenge
This underground water management component needed to be:
- Structurally robust to handle heavy vehicular loads
- Highly efficient in water storage capacity
- Cost-effective to produce at scale
This required a large plastic part with thin walls, minimal material use, and exceptional load-bearing capacity—pushed to the limits of traditional injection molding.
Our Approach
Baytech’s engineering team approached the problem systematically:
- Mold flow analysis was used to simulate plastic flow, identifying potential defects early.
- DFM (Design for Manufacturability) reviews guided refinements to improve moldability and reduce complexity.
- A custom mold was designed and built to meet the exacting requirements of the project.
- During early trials, we encountered a cooling challenge in the thicker sections of the part.
- We revised both the part and tool design to incorporate more effective cooling, then ran further trials to validate the improvements.
The Result
The result was a breakthrough:
A large, hollow, injection-molded part that met all performance requirements and could be produced efficiently at an economic cycle time. This enabled our client to move forward with a truly one-of-a-kind solution—without compromising on cost, strength, or durability.
Have a unique molding challenge?
Baytech brings experience, precision, and innovative problem-solving to every project. Contact us to learn how we can help.

