How the plastic extrusion is heated and cooled

A plastic extrusion is one of the main equipment in the cable production process. Its function is to strand the cable's outer layer coated with a plastic shell. A plastic extrusion combines the cable production process and the crystallization of automation equipment. The plastic extrusion process is not complex in overall understanding, but combined with mechanical equipment to achieve it is still very technical. One of the heating and cooling link is an important part. In this article, plastic extrusion manufacturer Taizheng will share the process of plastic extrusion heating and cooling links with you.

Heating and cooling are necessary to successfully complete the plastic extrusion process. To better keep the plastic extrusion within the temperature range required for the production process, the temperature of the raw material inside the barrel of the plastic extrusion is adjusted continuously according to the heating or cooling method.

The plastic extrusion barrel is heated to give heat to the raw material melting in the barrel, and the barrel is cooled to avoid too much heat caused by the raw material melting by pressure and friction to make the temperature rise. The alternate application of heating and cooling, so that the barrel of the plastic extrusion heat regulation in the raw material melt must be within the processing temperature range to ensure that the plastic extrusion can be all normal scale. Barrel heating methods: resistor heating, electric induction heating, heat carrier heating. The cooling method has two kinds water-cooled and air-cooled.

The heating method of the plastic extrusion adopts the resistor heating method. Its heater selects an aluminum casting heater. The heating tube is installed into the metal hose and filled with light magnesium oxide and other insulating layer materials made of an electric heating rod, bent according to the required appearance, and then cast into the aluminum alloy profile. It is smaller in size, lighter in net weight, easy to install and dismantle, has higher heating temperature, has a long service life, is waterproof, shockproof and explosion-proof type, etc.

Using the air-cooled method, an electric fan exhaust is a key to cooling through the gas. The wind blowing to the barrel must reduce the location's temperature and take away the barrel heat so that the barrel can achieve temperature reduction, but the cooling speed is relatively slow.

The plastic extrusion has the characteristics of a simple structure, small thermal shock, zero pollution, centralized wind speed, high efficiency of cooling, easy installation, and maintenance, etc. It has excellent quality and is commonly used.

You can check the detailed information about plastic extrusion through our plastic extrusion product section and the operation video, which should help you better understand plastic extrusions and order high-quality plastic extrusions. Welcome to contact Taizheng Machinery.