rotational molding

Plastinvent has one of the most efficient heaters for rotational molding of demanding industrial products. The polyethylene gets no weld lines, and the product is almost free of tension.
The method is highly efficient and has low production costs. The customer gets opportunities for special design and special adaptation to his needs.

Rotational molding is a technique adapted to polyethylene products.  Rotational molding is basically a method of producing hollow products, but the end products must not necessarily be hollow. A hollow form is filled with an appropriate volume of polyethylene powder. The mold is closed and rotated slowly while heated from the outside. A shell of polyethylene is thereby formed on the inside of the mold. After cooling, the mold is opened and the product removed.

Some final operations can eventually transform the product, and this method therefore competes effectively with injection molding or blow molding in certain markets.

Rotational molding stand out from all the other processing methods in that the warming, melting, forming and cooling stage occurs after the polyethylene is located in the mold.

The advantage of this is:

Rotational molded products substantially free of tension.
No weld lines.
Major products can be manufactured at low cost.
One can achieve excellent measurement accuracy.
Designers have great freedom in terms of design.
One can cast highly complex products.
Products of different kinds of polyethylene as raw materials are environmentally friendly, heat and cold resistant, have long lifetime, are chemically resistant and have huge impact resistance.

The most high-efficient hot oven for rotational molding

Plastinvent has one of the most efficient heaters for rotational molding of demanding industrial products.
The polyethylene gets no weld lines, and the products are almost free of tension.
The method is efficient and has low production costs. The customer gets opportunities for special design and special adaptation to his needs.