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Four Trends and Prospects of Plastic Extruder Development
Jun 11, 2018

Four Trends and Prospects of Plastic Extruder Development

Plastic extruder after 100 years of development, has been derived from the original single screw twin screw, multi-screw, and even no screw and other models. Plastic extruder (host) can be with the pipe, film, holding materials, monofilament, flat wire, packing belt, squeeze network, plate (film) material, profile, granulation, cable coating and other plastic molding auxiliary Matching, forming a variety of plastic extrusion molding production lines, the production of various plastic products. Therefore, the plastic extrusion molding machinery, whether present or future, are the plastics processing industry is widely used in one of the models.

The development trend of plastic extruder is as follows:

(1) Extruder towards large-scale, high-speed, high-speed direction of the development of foreign screw diameter of 200-250mm extruder has been very common screw screw diameter greater than 400mm special extruder is not uncommon. Increasing the screw diameter increases the productivity of the extruder. When the screw diameter is doubled, the extruder's production capacity can be increased several times. Another effective way to improve production capacity is to improve the speed of the screw, the speed of 300r / min above the high-speed and ultra-high-speed extruder, so that the production capacity of the extruder is greatly improved. But after the increase in speed will bring about plasticization and other issues, which prompted the extrusion theory and the structure of the screw to study and test, resulting in a number of new screw, such as separation, mixing, barrier, , Combination type and so on. The aspect ratio of the screw is also increased from 20: 1 to 36: 1, and up to 43: 1. This is very effective in improving the quality and efficiency of plastics.

Four Trends and Prospects of Plastic Extruder Development

(2) Extruder auxiliary equipment has also been improved, the standard standardized to meet the requirements of different plastic products.

(3) Extrusion automation, the use of microcomputer on the extruder process parameters for detection and control, temperature difference can be controlled within ± 1 ℃. Extrusion equipment using microelectronics technology, plastic extrusion molding processing to accurate, sophisticated, energy saving and automation direction.

(4) In order to meet the requirements of new materials and new processes, new or special extruders are emerging. Such as three-screw extruder and planetary multi-screw, screw-free extruder, reaction extruder, two-color extruder, foam extruder and so on.

Today, the modern plastic extruder has been widely used modern electronic and computer control technology, the entire extrusion process on-line detection, and the use of computer closed-loop control. In order to meet the diversification of production development needs, plastic molding technology has been towards modern high efficiency and intelligent control of the rapid development of control.

What is the industry outlook for plastic extruders?

As China's extruder products and strategic new industries are closely linked, with high efficiency, energy-saving advantages and high cost, the developed countries in the low-end exports, this part of the consumer demand is rigid, so the extruder Industry development still has a larger market space.

From the domestic perspective, China is still in the industrialization, information, urbanization, marketization, internationalization in-depth development stage, is still in the development of an important strategic opportunity period, which will give the extruder industry to provide an inexhaustible development momentum. Finally, the international market to pick up, for the extruder business has brought confidence. Now the developed countries of the extruder industry has been widely used modern electronic and computer control technology, the entire extrusion process parameters such as melt pressure and temperature, the body temperature, the main screw and feed screw speed, feed Quantity, the ratio of various raw materials, the motor current and voltage parameters such as on-line detection, and the use of computer closed-loop control. Some companies have adopted online remote monitoring, diagnosis and control, the extrusion molding production line for network control. This is to ensure the stability of the process conditions, improve product accuracy are extremely favorable.

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