The extruder needs to measure and pre-mix the LLDPE resin and some additives (flame retardant, etc.) according to the process recipe; then measure the various raw materials and additives into the high-speed mixer (temperature control at 90 ° C) The material is added to the extruder for granulation production, and then the extruder is used again for extrusion molding work.
In the pre-mixing of raw materials, in order to improve the mixing quality and flame retardant performance of the flame retardant and the resin, the plastic extruder manufacturer adds some coupling agent and dispersing agent to the flame retardant, and the amount added is about 1.5% of the flame retardant. .
The extruder used in the production line is used for granulation production. We recommend an extruder with a gradient depth of progressive screw. The working temperature is controlled in the range of 150~180 °C. Extruder for extruded tubing We recommend a single-screw universal extruder with an equal-distance unequal gradient with a 20:1 aspect ratio and a compression ratio of 2.5. The molding die structure is the same as that of the polyethylene universal pipe forming die.
Suggested reference data for molding process temperature are: extruder barrel feeding section 110~130°C, plasticizing section 140~160°C, homogenization section 160~180°C, forming die 160~170°C.
