Material of floating tank: environmental protection PE material, which should have good anti-collision performance, so LLDPE and HDPE materials can be used, depending on the needs of customers.Floating box filler: EPS foam plastic, foam density 18kg/m3, see the size of the product.
Jacketed roll molding machines are mainly used to form large and extra large plastic parts. This kind of equipment uses jacketed roll molding molds. Its feeding, demoulding, heating and cooling are carried out in the same station, and its floor area is small. The heating and cooling of the mold of the jacket roll molding machine depends on pumping hot oil and cold oil into the jacket. It has high thermal efficiency and accurate temperature control. It is especially suitable for forming thick wall parts. Its disadvantage is that the equipment and mold are complex, difficult to process and expensive. The jacket type rotational molding machine is cooled by pumping cold liquid heat transfer medium (cold oil) and circulating through the jacket type.
Mold of rotary molding products the mold used for rotary molding is a single wall closed mold, which gives the outline of the product, but the internal outline of the product cannot be accurate to the details. Ordinary carbon steel plate is generally selected as the molding material of rotary mold. The cost of welding die is relatively low, especially suitable for large rotary plastic products. The rotary molding process has the following basic requirements for its mold:
In fact, plastic products with sudden change of wall thickness are not easy to be processed in the process of rotational molding. The average wall thickness of products mainly depends on the amount of feeding, and its uniformity is greatly related to the structure of the mold itself and the rotational molding process. If the uneven wall thickness occurs in the process of rotational molding, it is very likely that there are problems in structure, temperature and speed.
China's plastic industry (rotational molding products) is a "sunrise industry" integrating plastic synthetic resin, additives and additives, plastic processing machinery and molds with plastic processing as the core. The industrial scale is expanding, the product output is increasing year by year, the main economic and technical indicators are increasing significantly, and the whole industry is growing. It is moving forward along the road of realizing the sustainable development of plastic and mold industry from a big country to a powerful country.