How to make certain areas of the product thicker in rotational?

2025-09-25

How to make certain areas of the product thicker in rotational?

Rotomolding, or rotational moulding, is a highly versatile and adaptable manufacturing technology used to produce hollow plastic products in a wide range of shapes and sizes. The wall thickness of rotational molding products is relatively uniform and does not show significant differences. However, sometimes we may want certain areas of the product to be molded thicker. So, how can we achieve this goal.

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1. Reduce the mold thickness
If you want some certain areas shape thickner , you can consider reducing the mold thickness on these areas when you make the mold. Through this way, these areas will get more heat in the oven, on the plastic side, it will shape more than other areas.

2. Add air amplifier
For some parts, some areas may not shape well because of the complex structure design. If so, we may consider adding air amplifier on the mold side. Through this way, it can blow more heat into these certains area in the oven

3. Prehearting
Before the mold enters the oven, preheat some areas of the mold with a baking gun, which can make the corresponding product area thicker than other areas.

4.Adjust rotomolding machine parameters
For some plastic parts, you can adjust the rotomolding machine parameters, then some material will flow more into the two sides.

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How to make certain areas of the product thicker in rotational?

How to make certain areas of the product thicker in rotational?