A conical co-rotating twin-screw extruder means that the screw shape in the extruder is conical, and the rotation direction of the two screws is the same. The extruder using conical co-rotating twin-screw technology is called a conical co-rotating twin-screw extruder.

Basic Introduction

As we all know, the granulators on the market mainly include single-screw granulators, conical counter-rotating twin-screw extruders, and parallel co-rotating twin-screw granulators. The only advantage of a single-screw granulator is its low cost, but it has defects in extrusion force, plasticizing performance, and energy consumption, and cannot meet the demand; the advantage of a conical counter-rotating twin-screw extruder is its large extrusion force, but poor plasticizing performance, low output, and high energy consumption; and although the parallel co-rotating twin-screw granulator has good plasticizing performance, it has a small extrusion force, low output, and high energy consumption, so it is not satisfactory in actual use. We know that poor plasticizing performance will directly affect the quality of the plasticized product, and the extrusion force affects the output. At the same time, in the period of increasingly tight energy, high-energy-consuming equipment has also added great pressure to enterprises and society. For this reason, whether it is possible to design a granulator that can simultaneously meet the requirements of large extrusion force, good plasticizing performance, high output and low consumption is of great economic value and promotion and application value.

In order to overcome the above shortcomings, the conical co-rotating twin-screw extruder has both good plasticizing performance and good extrusion force.

The conical co-rotating twin-screw extruder, whose conical screws rotate in the same direction, makes the processed plastics extrude around the conical twin screws in the barrel in an 8-shaped shape after entering the barrel, which increases the plasticizing time and reduces the friction between the plastic and the barrel screw, thereby ensuring the plasticizing quality and reducing energy consumption; because the screw used is conical, the good extrusion force performance of the conical twin-screw granulator is maintained.

The conical co-rotating twin-screw extruder fully realizes the characteristics of large extrusion force, good plasticizing performance, high output and low energy consumption through the above technology. Tests have proved that this conical co-rotating twin-screw extruder can save energy by more than 30%-50%, and is a novel equipment suitable for various plastic or rubber extrusion granulation molding.

The conical co-rotating twin-screw extruder is a technological revolution in the development history of plastic extruders. From a development perspective, in the next few years, it has become an inevitable trend to replace traditional plastic extruders and become the main thermoforming machinery in the plastic processing industry.

In 2008, this product was jointly recognized as a national key new product by the Ministry of Science and Technology, the Ministry of Commerce, the General Administration of Quality Supervision, Inspection and Quarantine, and the Ministry of Environmental Protection.