Rotational molding involves a heated mold which is filled with a charge or shot weight of material.
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11 Facts About Rotational molding
2.
Rotational molding had developed further when R J Powell made mention of the commonly used ratio of 4:1 between major and minor axes of rotation at slow rotation speeds.
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3.
Rotational molding's patent covered this process for molding hollow objects from plaster of Paris in the 1920s.
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4.
In 1976, the Association of Rotational molding Moulders was started in Chicago as a worldwide trade association.
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5.
Normally all rotation Rotational molding systems include molds, oven, cooling chamber and mold spindles.
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6.
Vertical rotational molding machines are energy-efficient, owing to the compactness of their heating and cooling chambers.
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7.
Products that can be manufactured using rotational molding include storage tanks, furniture, road signs and bollards, planters, pet houses, toys, bins and refuse containers, doll parts, road cones, footballs, helmets, canoes, rowing boats, tornado shelters, kayak hulls, underground cellars for vine and vegetables storage and playground slides.
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8.
One benefit of rotational molding is the ability to experiment, particularly with wall thicknesses.
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9.
Rotational molding can be used as a feasible alternative to blow molding with products such as plastic bottles and cylindrical containers.
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10.
Rotational molding is the process of choice for short runs and rush deliveries.
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11.
The rig for rotational molding usually has a relatively small wall thickness and is manufactured from metals with a high thermal conductivity .
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