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The surge in demand for degradable plastics: the general trend of technological transformation of injection molding machines

Since the beginning of this year, my country has continuously strengthened the prevention and control of plastic pollution. Since the implementation of the new "Plastics Ban", degradable plastic products have become the "new favorite" in the market. In the near future, degradable plastic products will be completely replaced by degradable plastic products.

After the introduction of the new "plastic ban", there are only three areas of sales, express delivery, and agricultural films. It is expected that the demand for biodegradable plastics in the future will reach 1.5453 million tons, corresponding to a market value of 27 billion yuan. In addition, there is a huge market demand for biodegradable garbage bags and shopping bags in my country, with an annual output value of up to 12 billion yuan; the demand for biodegradable airbag products will increase rapidly, and the total market demand will reach 37.3 billion yuan; the market for biodegradable lunch boxes is huge, The annual demand is about 100 billion yuan in market scale.

Responding to the call of the national environmental protection policy, it is the responsibility of all enterprises to fundamentally solve the problem of plastic pollution. For plastic machinery manufacturers that produce plastic products, it is necessary to allow machinery to produce degradable plastic products that meet environmental protection requirements, or through technology Upgrade after adjustment

The company's waste plastic recycling and recycling granulation injection molding technology solutions, polylactic acid, degradable plastic materials (PLA) injection molding production intelligent solutions, etc., provide the society with more sustainable development solutions such as energy saving, consumption reduction, and low carbon. , Opened up a new market for the plastic machinery industry. The company’s research and development product project "High-efficiency treatment and high-value recycling of solid recycled polymer materials complete sets of technology and equipment" was awarded the third prize of Zhejiang Science and Technology Progress Award. The company will further increase the investment and application of new technologies and products of "circular economy" and "degradable materials" to help the sustainable development of the world economy.


A few days ago, investors asked whether the biodegradable plastic PBAT needs a new injection molding machine? Can the old injection molding machine be used? Yizumi said that the biodegradable plastic PBAT is a new material. Under existing conditions, there is no need to replace a new injection molding machine, but only need to adjust the original injection molding machine to a certain extent, such as improving the molding process and iterating software algorithms. Wait for it to be put into production.

Degradable plastics, especially fully degradable plastic products, have become necessary. These materials have the characteristics of low processing temperature, very close to The black plate or yellowing seriously affects the appearance and performance of the product. For fully degradable plastics, injection molding machinery should have new features such as low residence time plasticizing device, low temperature and low shear high-efficiency screw, servo oil pump energy-saving system, accurate temperature and pressure control feedback system and other new features. For injection molding machinery manufacturers, it is time to accelerate technological change and upgrade. The difference from ordinary injection molding in the injection molding process:

There is a big difference between the injection molding process of degradable plastics and ordinary plastics. This is because degradable plastics are generally non-Newtonian fluids with poor fluidity, which are insoluble at low temperatures and easily degraded at high temperatures, so the processing temperature range is relatively low. Although the processing technology of different decomposable raw materials is very different, taking PHA as an example, the inverse temperature control method in which the temperature at the lower part of the hopper is higher than the nozzle temperature can be used to well control the dissolution of raw materials and the loss of molecular weight.

Matters needing attention when buying injection molding machine:

Ordinary injection molding machines cannot produce degradable materials at all. Decomposable materials are sensitive to temperature and have very poor fluidity in a low-temperature molten state. The draw rod and injection piston rod of the injection molding machine are subject to relatively large pressure, which is likely to be the cause of abnormal molding; or after a period of normal use, the injection molding machine The performance is obviously attenuated and normal production is impossible. Generally recommend the "high-speed machine" series of servo injection molding machines. It has high mechanical education performance, while reducing energy consumption, which is conducive to the molding of degradable materials.

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