Heat preservation plastic bucket and manufacturing method thereof

The invention discloses a heat preservation plastic bucket and a manufacturing method thereof, and belongs to the technical field of plastic products. The heat preservation plastic bucket comprises anouter bucket base, a composite polypropylene PPR inner cylinder body, a PE foaming heat preservation layer and a PE outer shell protection shell, wherein the foaming heat preservation layer and the PE outer shell protection shell wrap the outside of the composite polypropylene PPR inner cylinder body, the outer bucket base is fixedly connected to the outside of the composite polypropylene PPR inner cylinder body, the outer bucket base comprises an upper layer plate and a lower layer plate, an arc baffle is integrally formed on the edge of the position between the upper layer plate and the lower layer plate, and a cavity is formed among the upper layer plate, the lower layer plate and the arc baffle. The manufacturing method of the bucket comprises the following steps of preparing and mixing, melting and extruding