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MANUFACTURING PROCESS

Manufacturing
Process

Discover how Aquavolt manufactures durable polyethylene products using rotational moulding.

Explore Our Products
Precision ProcessControlled rotational moulding technology.
Consistent QualityChecks at every production stage.
Durable ProductsSeamless polyethylene construction.
Made for South AfricaDesigned for demanding conditions.
Rotational moulding equipment and finished Aquavolt tanks in a factory
THE PROCESS

How Rotationally Moulded Products Are Manufactured

Aquavolt uses rotational moulding to produce durable polyethylene tanks. This manufacturing process creates strong, seamless products with consistent material distribution.

The mould rotates slowly around two axes while the resin heats and spreads across its internal surface. Controlled cooling, finishing and inspection help the finished tank meet its intended specifications.

FROM RESIN TO FINISHED TANK

Tank Manufacturing Process

An illustrated overview of the six stages used in rotational moulding.

Rotational moulding production process: preparing resin, loading the mould, heating and forming, cooling, finishing and quality checks.
Visual overview · View full-size diagram

Step-by-step explanation

  1. 01

    Raw Material Preparation

    Select and measure polyethylene resin suitable for the intended product and specifications.

  2. 02

    Rotational Mould Loading

    Prepare the mould and load the measured material before securely closing it.

  3. 03

    Heating & Forming

    Heat and rotate the mould on two axes to form the tank walls.

  4. 04

    Cooling & Demoulding

    Control cooling; once sufficiently set, carefully remove the moulded tank.

  5. 05

    Finishing & Fittings

    Trim, finish and fit suitable openings, lids or connections as specified.

  6. 06

    Inspection & Dispatch

    Check the finished tank against product requirements before release.

Individual product specifications, quality tests and process parameters can vary. The diagram is an overview rather than an operating instruction.

OUR PROCESS

The Four Stages of Rotational Moulding

From raw resin to a finished and inspected product, every stage matters.

1

Loading the Resin

Measured polyethylene resin is placed inside a clean mould, which is then securely sealed.

Loading the Resin
2

Heating & Rotation

The mould rotates on two axes in a heated oven as the resin melts and coats its inner surface.

Heating & Rotation
3

Cooling the Mould

The mould cools while continuing to rotate, helping retain its intended shape and wall thickness.

Cooling the Mould
4

Finishing & Inspection

The cooled product is removed, trimmed, finished and inspected before fittings are added.

Finishing & Inspection
KEY BENEFITS

Why This Process Matters

Rotational moulding produces dependable tanks intended for long-term service.

Seamless Construction

One-piece moulding without welded joins or seams in the body.

Consistent Wall Distribution

Controlled rotation supports even material distribution within the product.

Long-Term Durability

Strong polyethylene construction designed for demanding use.

Consistent Product Quality

Managed processing and inspection help maintain manufacturing quality.

Quality inspection of a completed Aquavolt water tank
QUALITY ASSURANCE

Inspection, Finishing & Product Confidence

After moulding, the finished tank is trimmed and inspected for its intended characteristics, shape and finish. The process helps identify issues before the product is supplied.

From resin measurement through to final inspection, the focus is on creating polyethylene products that deliver reliable performance in their intended South African applications.

Read Technical Guidance
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