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Recently, the newly developed 20-meter five-layer plastic co-extrusion blown composite film unit developed by Dalian Rubber & Plastic Machinery Co.
, Ltd.
was successfully tested in the company
.
The head structure of the unit is compact, reasonable and reliable, the flow rate of each layer is uniform, and it can still maintain high stability under severe working conditions
.
Wu Dan, director of the Blown Film Equipment Research Institute of Dalian Rubber and Plastic Machinery Co.
, Ltd.
, said: "Compared with the past, the new unit adopts a new type of screw developed by the company in the design, and the barrel structure, unit appearance and layout are comprehensively carried out.
The upgrade makes the new unit more regular and compact, and the overall performance of the unit is improved, which saves production energy consumption and floor space for users, and maximizes the efficiency of the unit
.
During the development of the new unit, the large rubber and plastics project team fully absorbed the mature technologies accumulated by foreign subsidiaries in recent years in technological innovation, and combined with the previous unit development experience to realize the organic integration of domestic and foreign technologies
.
During the processing of the machine head, the R&D personnel broke through the difficult barrier of grinding and processing the cone surface, so that the contact rate of the cone surface reached more than 99%; the sealing ring of special material was used to assist the sealing, which effectively avoided the high temperature and high pressure of the material in the machine head.
The phenomenon of material channeling in each inner layer is helpful for the development of a real five-layer structure multi-functional greenhouse film
.
