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The rotomolding technique is probably the most cost effective way of producing large and hollow plastic parts. The process yields smooth and seamless molded products with uniform wall thickness and superb shock absorbing properties. The molds are also relatively very strong and flexible as no stress is subjected during the production process.
Rotomolding is Dramatically Cost efficient:
In comparison to other plastic molding techniques like injection and blow molding, the rotomoulding technique is exceptionally cost efficient. Even the tools employed are comparatively cheaper as it employs welded aluminum or stainless sheets unlike other processes. This is because the molds are not subjected to any form of pressure or stress throughout the process. Moreover , very little material is wasted during the process and whatever excess material remains, can always be re-used.
Inherent Design Advantages of Rotomolding:
Rotomolding is known to yield smooth and seamless molded parts with precisely uniform wall thickness and fantastic shock absorbing capabilities. Complex outline with excellent surface definition is possible. The molds are also relatively very strong and flexible as no stress is subjected during the production process. Moreover reinforced ribs can be designed into any part, if extra strength is desired. Rotomolding also offers the option of multi-wall molding, which can either be left hollow or can be foam filled to provide immense strength. Another big advantage of the process of rotational molding lies in the flexibility to make highly complicated design, right from stiffening ribs, indentations to different textures.
Other Advantages of Rotomolding:
- Short lead-time
- Fantastic load-bearing properties
- Most materials can be easily recycled.
- Economical for low, medium and high volume production runs.
- Resins can be tailored to suit the application – e.g., to satisfy FDA requirements
- Possibility of minor under-cuts without the need for draft angles