Process control of PE-RT pipe extrusion production

Ningbo Fangli Technology Co., Ltd. is a mechanical equipment manufacturer with nearly 30 years’ experiences of plastic pipe extrusion equipment, new environmental protection and new materials equipment. Since its establishment Fangli has been developed based on user’s demands. Through continuous improvement, independent R&D on the core technology and digestion & absorption of advanced technology and other means, we have developed PVC pipe extrusion line, PP-R pipe extrusion line, PE water supply / gas pipe extrusion line, which was recommended by the Chinese Ministry of Construction to replace imported products. We have gained the title of “First-class Brand in Zhejiang Province”.

Process flow: granular raw material → drying → extruder heating → special die for PE-RT pipe → vacuum calibrating tank → cooling tank → printing → high-speed haul-off → chip free cutting machine → coiler → inspection of appearance and size → simple packaging → pressure test → packaging after passing the test → warehousing

The materials used for PE-RT pipes are Dow DOWLEX2344 / 2388E of the United States, YUCLAIR EX800 and DX900 of SK Co., Ltd. of Korea, SP980 of LG company, XP 9000 of Dalin company, QHM22F of Qilu Petrochemical, etc. During high-speed extrusion, there are obvious differences in processing parameters due to the differences of raw materials. Therefore, strictly controlling the quality of raw materials is also an important guarantee to ensure the quality and service life of PE-RT pipes produced at high speed.

The processing temperature of PE-RT raw material is between 180-210 ℃, and the output is the highest. During high-speed extrusion, if the temperature is low, the plasticization is not good, the appearance of the pipe is not smooth, there is no brightness or melt breakage; When the temperature is too high, the export blank is too soft and small marks are easy to appear on the pipe surface. Therefore, the fluctuation range of temperature is controlled at about 5 ℃. When the difference is too large, the thickness and performance of the pipe will change.

If you need more information, Ningbo Fangli Technology Co., Ltd. welcomes you to contact for a detailed inquiry, we will provide you with professional technical guidance or equipment procurement suggestions.