How are poly tanks for fire trucks made?

Poly tanks for fire trucks are made by using innovative technology and high-quality materials. The process starts with the selection of High-Density Polyethylene (HDPE), a material known for its strength, corrosion resistance, and longevity.

1. Design and mold preparation

At the initial stage, the tank is designed using advanced CAD software to ensure accuracy and compliance with safety standards. After the project is approved, a mold is made, often using CNC to obtain the exact dimensions and shapes needed for a fire truck.

2. Molding process

The core of poly tanks for fire truck manufacturing is the rotational molding process. First, HDPE resin, which is in powdered form on this stage, has to be loaded into the mold. After, this mold need to be heated in a large oven while rotating on two axes. This rotation distributes the plastic evenly along the inner surface of the mold, ensuring uniform thickness and strength. The heating process generally lasts a few hours at temperatures around 300 degrees Fahrenheit.

3. Cooling and removal

After the heating phase is done, the tank has to be cooled gradually while still rotating. This process will help to prevent deformities. Once cooled, the poly tank should be removed from the mold. 

4. Quality checks and finishing touches

Each tank undergoes strict quality control, including hydrostatic leakproofness tests and structural integrity assessments. Afterward, fittings and fixtures are added, and the tank itself is polished to eliminate any defects.

By the numbers:

  • Material Used: 100% virgin HDPE
  • Temperature for Molding: 300°F
  • Molding Time: 2-3 hours
  • Cooling Time: 1-2 hours
  • Testing Standards: Meets NFPA standards

Get in Touch With Legacy HDPE

These poly tanks for fire trucks are designed to perform under extreme conditions, ensuring that fire trucks are always ready for action. For more details on the specific technologies and machines used in the manufacturing process.

If you are looking for high-quality solutions tailored to the specific requirements of your HDPE tank production, contact Legacy HDPE. We prioritize quality and customer satisfaction, ensuring durability, efficiency, and cost-effectiveness. For more information about our products and services, please contact us directly at Tel: 307-299-3049.

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