Due to the fusion defect of material flow, it is difficult to ensure the production of PE-RT pipe. At present, spiral dies are mostly used, and the tensile expansion ratio is between 1.3-1.6. The smoothness of the die and the mandrel directly affects the appearance of the pipe. For example, due to t......
Read MoreThe US plastics industry saw increased trading in the first six months of this year – but with imports far exceeding exports. Figures in the Plastics Industry Association’s Global Trends report reveal that trading volume exports plus imports – rose by nearly 28% for the first half of the year, ......
Read MoreAccording to the raw material characteristics of PE-RT pipe, the length diameter ratio of the screw is relatively large, which is usually designed as 33:1. The double-stage mixing screw is adopted in the screw structure, and there is a mixing element in the middle and head of the screw to avoid exce......
Read MoreProcess 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......
Read MoreBecause the floor heating pipe is a coil, a bundle of 200-300m, the deviation of the middle pipe is not easy to find, and there will be potential quality problems. PE-RT pipe production requires that the good properties of the raw materials be "duplicated" to the pipes, and it is hoped to realize co......
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