Method and equipment for simultaneously forming multiple high polymer thin bars by single screw machine barrel

Abstract

The invention relates to a method and equipment for simultaneously forming multiple high polymer thin bars by a single screw machine barrel. The method sequentially comprises the following steps: the high polymer material is fed via a feeding base, then moves forwards along the independent screw channel direction, and is gradually compacted; in a screw edge line tapering section, a screw edge line of the screw transits from a spiral shape to be parallel to the screw direction; the compacted high polymer material moves forwards along with the screw channel in a moving mode that is gradually changed from spiral movement into linear movement along the screw channel; in a thin bar forming section, each independent blank is formed between each independent screw channel and a homogenization barrel, a thin bar blank is formed in an independent cavity, and the high polymer thin bars are plasticized under the combined action of heating of a heater and friction heat; and the thin bar blank is shaped by cooling, and continuous formation of the high polymer thin bar is realized finally. The method and equipment have the beneficial effects that: the high polymer material with poor fluidity or even without fluidity can be used for continuously forming the bars by the single screw; and the high polymer bars can maintain the physical properties of the high polymer material.

Description

technical field [0001] The invention relates to a single-screw barrel molding method and its equipment for simultaneous molding of multi-bundle thin rods of polymer materials with poor fluidity or even no fluidity. Background technique [0002] At present, polymer materials with certain fluidity are solidified or condensed through the small holes of the spinneret through the extrusion and plasticization functions of single and twin-screw extruders and the quantitative feeding of gear pumps (melt pumps). Thin rods or fibers of polymer materials, this technology has high efficiency and mature methods, and has been widely used. However, for some new polymer materials with excellent performance, such as ultra-high molecular weight polyethylene (UHMWPE), etc., due to poor fluidity or even no fluidity, single- and twin-screw extruders cannot be used for extrusion plasticization and gear pumps (melt pump) to form thin rods or fibers of polymer materials, which limits the applicati...

AI Technical Summary

Problems solved by technology

However, for some new polymer materials with excellent performance, such as ultra-high molecular weight polyethylene (UHMWPE), etc., due to poor fluidity or even no fluidity, single- and twin-screw extruders cannot be used for extrusion plasticization and gear pumps (melt pump) quantitative feeding to form thin rods or fibers of polymer materials, which limits the application of this type of high-performance new polymer materials

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