According to the technical repo₽•βrt released by the national development ✘σand Reform Commission, at present, the commonly ≠₽used plastic extrusion equipment i★∞n China mainly includes cone-shaped c≥≈&ounter rotating twin-screw extruder, α"★✘parallel co rotating t≥&≠win-screw extruder and single screw extrudπ&÷∞er. The actual specific pow♠∞εer of these three kinds of equip™•↕ment is basically above 0.14KW / (kg. H). In 20←©11, the output of plastic produc•&→ ts using these three extruders in China was about'≤≠♠ 70 million tons, and only♠δ∑ the main extruder consumed mor"♣'<e than 8 billion kwh.
The "efficient and energy-sβ₩♣☆aving conical twin-screw extrusi♦£ on technology" combines the functΩ$ πional and structural advantages of two kinds o≠f twin-screw extruders in the wor ♠£ ld, namely "conical counter rotat$€ing twin-screw extruder" and "pδ ÷arallel counter rotating twin-←©screw extruder". The combinatio♥αn of "conical coun≥↔σter rotating twin-screw ♦♣extruder" and "co rotating twin-s♥≠×∏crew extruder" not only keeps the c£↔<≥haracteristics of large extrusion force↓φ of conical counter rotating twin-screw extruder,δ₽ but also achieves parallel counter rotating twiπ≥n-screw extruder The screw extruder has goodα♣ ¶ plasticizing performan&♥ ≈ce and can meet the processing requirements≥☆ of low-temperature and low-temperat¶÷$✔ure screw, which has the characteristics of α÷∏δhigh yield and low energy consumption.
The year-on-year output ↓ε♥σhas more than doubled, a★φ↔nd the power saving rate is ¥ ∑about 50%. At present, the✘γ↓ technology has formed industrialization, and¥≠φ the products have been÷↔™ used in various plastic gr÷€anulation, profile extrusion and other aspecδ♣ts. According to the technical rep""ort released by the national >×≠↑development and Reform '✔Commission, it is esti$∏mated that by 2015, the total§α amount of plastics in China will be more t αhan 100 million tons. If the tec♥<hnology can be promoted to 30% ÷∞₽in the industry, the annual saving capacπ>≥ity will be about 900000.
In addition to its own continuous refor€₽"£m, the development an& ☆d expansion of extruder industry ε<σalso has a great bearing on the suppor☆≠÷t of national policies. Relλ≥÷₩evant experts suggest that if the c∞εΩountry can take plastic machinery as the b>βasic machinery of industry as well as machin"©↑e tools, as an impor₽♦tant part of national equipment industry, ±∑♦it will give special support and≤★ preferential policies to≥↑≤ advanced plastic machinery as CNC machine toolσ≈↔s, In order to promote t"α he plastic machinery industry♥€σφ to play a more obvious leverage ₹λrole and make greater contribution to the d♥♣≥§evelopment of China's equipment inφ✔∑dustry.
In the future, China×π9;s plastic machinery industry will₩↔ develop in the direction of specialization, se♦rialization, standardization, com↕"β₹pounding, miniaturizatioγ'↓Ωn, large-scale, individuation and intelligence. ≤ At the same time, it will meet the requireme™σφ•nts of energy saving, material ♠→saving, high efficiency®✘ε and environmental protection, so as to απ↓meet the needs of cost saving of plastic ra•<w materials and plastic produ"λ♠cts processing enterprises. This is δ§×®the main direction of the world pla•∏stic machinery industry development and<ε market demand.
