Rotomolding Case Study – Water Treatment Application

2025-08-18

Since 2008, Rising Sun Rotomolding has been providing completerotomolding machine solutions to clients across various industries worldwide!

With years of expertise, we’ve successfully delivered projects in 60+ countries, and this year, we’re set to exceed 70+ countries! Our rotomolding machines serve countless applications—today,

we’re sharing a rotomolding machine for water treatment line case!

Project Overview

The client customized a 3A-4500 Rotomolding Machine, featuring 3 rotating arms, each capable of holding a large water tank mold.

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Why Rotomolding?

Originally, the client used injection molding and extrusion, but faced challenges:

- Injection-molded tanks suffered from high stress, warping, and dimensional inaccuracies, leading to high scrap rates.

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- Fiberglass tanks had long production cycles, difficult repairs, high recycling costs, and environmental concerns.

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After evaluating different processes, they found rotomolding to be the perfect solution!

✅ Stress-free, seamless molding

✅ Low-cost custom molds for high-quality tank designs

✅ Color flexibility, durable & corrosion-resistant

✅ Eco-friendly & recyclable material

Custom Mold Development

The molds were engineered by Rising Sun, optimized for:

✔ Arm positioning & load analysis

✔ Ease of assembly/disassembly

✔ Maximized production efficiency

Result: High-quality, weld-free water tanks with smoother, safer production.

Client Visit – A Thriving Success!

When we visited the client’s factory, we were amazed—like a seed growing into a towering tree! This reflects the rising demand for rotomolding in water treatment and the growing emphasis on environmental sustainability in China.

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