 How is the rotational molding proceeding? |
In rotational molding, a pre-measured amount of plastic material in liquid or powder
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| form is placed in a cavity and the mold is closed. |
| The molding machine then indexes the mold into an oven (Figure IB) where the mold
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| and, subsequently, the plastic is brought up to the |
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| molding temperature. As the mold is heated, it is |
| rotated continuously about it's vertical and horizo- |
| ntal axes.The biaxial rotation brings all surfaces |
| of the mold into contact with the puddle of plastic |
| material. The mold continues to rotate within the |
| oven until all the plastic material has been picked |
| up by the hot inside surfaces of the cavity. The |
| mold continues to rotate until the plastic material densifies into a uniform layer of |
| melt. |
| While continuing to rotate, the machine moves the mold out of the oven and into |
| a cooling chamber (Figure IC). Air or a mixture of air and water cools the mold and |
| the layer of molten plastic material. This cooling process continues until the part has |
| cooled sufficiently to retain it's shape. The machine then indexes the mold to the |
| loading and unloading station (Figure IA). The mold is then opened and the part |
| removed. A new batch of material is then placed in the cavity, the mold is closed and |
| the process is repeated. |
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| Do you want to know more about rotational molding? |
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BC-RM01 |
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BC-RM02 |
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