The characteristics of a single -screw extruder and Application Analysis

Single screw extruder extruder as a common device , a single -screw extruder for the plastics processing industry, primarily , a single screw extruder is generally divided into three sections on the effective length , single-screw extruder press screw diameter size , pitch single screw extruder , single screw extruder screw wire drawing machine depth to determine a single screw extruder three sections the effective length of a single screw extruder generally divided by one-third each .
Efficient single screw extruder with double cascade overall design, reinforcing plasticization , single-screw extruder to ensure the stability of high-speed high-performance extrusion , special barrier integrated mixing design, single -screw extruder to ensure mixing of the material effects, high shear and low melting plasticizing temperature , high-performance materials to ensure low temperature and pressure measurement extrusion .
Single screw extruder design concepts and features: on the basis of high speed straight , high extrusion .
Single screw extruder design cheap, and thus a single screw extruder is widely used. However, single-screw extruder has its limitations in the use of a single -screw extruding machine extruder is mainly manifested in the following aspects:
( 1 ) single screw extruder material handling mainly by friction, so that a single -screw extruder feeding performance limitations , powder , paste material, inorganic fillers such as glass fiber and more difficult to join.
( 2 ) When a single -screw extruder head pressure is high , the counter increases, the single screw extruder in reduced productivity .
( 3 ) single screw extruder vented extruder the material on the surface of the exhaust area update action is small, so the exhaust single-screw extruder is less effective .
( 4 ) single-screw extruder suitable for some processes , such as polymer colored thermosetting powder processing.
Single Screw Extruder Application: All thermoplastic extrusion molding, extrusion granulation .
August 6, 2013 , China Machinery Industry Federation held the ” first half of 2013 economic complete copper and aluminum continuous operation situation Machinery Industry ” press conference . China Machinery Industry Federation executive vice president CaiWeiCi , in the Qing Ji , China Machinery Industry Federation, the statistics department director Zhao Xinmin , China Automobile Industry Association Vice President and Secretary General Dong Yang attended the conference. CaiWeiCi executive vice president of the first half of 2013 introduced the machinery industry economic operation situation , and the 2013 full-year trend of economic operation of the machinery industry to analyze and predict .
This year is the implementation of the ” Twelfth Five-Year Plan” nexus year, but also deepen the reform, continued to promote the adjustment of industrial structure to tackle tough critical period. Economic operation of the internal and external environment is complex and continuous development pressures. In this context , the machinery industry conscientiously implement the State Council’s decisions and plans , and actively promote industrial restructuring. Basic continuation of the first half of the fourth quarter of last year bottomed stabilization to the good momentum of economic operation showed a slow recovery , moderate growth and steady development trend. Forced mechanism while the role of the market , the industry continuous extrusion machine extension and expansion cooling, warming research and innovation , continue to show highlights of structural adjustment .

Drawing mechanic added value growth rate slow recovery

Looking year , industry-wide this year , although the economy is expected to run faster than last year’s , but overall will remain at a low level , year on year sales growth is expected to be die wire drawing machine about 12% , profit growth of about 8% , foreign trade exports last year roughly the same. In the current situation , the whole industry to make good use Forced mechanism , and actively promote the machinery industry restructuring and development pattern , to achieve improved quality of industry growth .
( A ) the slow growth rate of industrial added value rose , close to the national industry average
National Bureau of Statistics January- June machinery industrial added value increased by 9.2% over the previous year to speed up 0.2 percentage points. Monthly , 1- February mechanical industrial added value growth of 9 % over the same period the national industrial added value growth rate 0.9 percentage points lower , but then the overall growth rate of industrial added value of machinery showed upward trend month by month , in April , May month growth rate reached 9.9% and 9.7 % month growth rate hydraulic automatic drawing machine has been higher than the national industry . 1-6 month cumulative growth rate of machinery industry just behind the country’s industrial growth rate of 0.1 percent.
( Two ) efficiency of the sector rose faster than sales
Opening machinery industry profit growth continued last year up weak trend, a quarterly profit year on year growth of only 6.38% . Entering the second quarter, the industry profit growth has accelerated rebound , 1- June total profit of 600.1 billion yuan , the low base in the previous year growth of 12.58 percent , based on an acceleration of 10.64 percent. January to June the main business income margin was 6.35% , remained aluminum continuous extrusion machine stable. Steady growth, revenue from principal operations in the first half , 1- June totaled main business income of 9.45 trillion yuan , an increase of 12.92% . January-June machinery industry loss-making enterprises increased by 646 , the loss was 15.99% , up 0.83 percentage points, but look at the monthly losses appear before narrowing trend .
( Three ) sectors increased differentiation , a typical investment products manufacturing enterprises greater difficulties
The National Bureau of Statistics released 64 kinds of main products, machinery automatic drawing machine industry , the first half of production to achieve an increase of 36 species , accounting for 56.25% , production fell 28 kinds of products , accounting for 43.75% . Specific look , different industries increased product yield large differences , the overall showing a close relationship with the consumer products are generally better in the investment category of products , agricultural products, the passenger car , instrumentation and other products output growth is good ; car sales continued to grow rapidly in the first half total sales volume exceeded 10 million mark, respectively, 10,751,700 and 10,782,200 , an increase of 12.8% and copper and aluminum wire drawing machine 12.3 %, of which passenger car production and sales were up 14.02 percent and 13.81 % . Machine tools, construction machinery, heavy machinery, power generation equipment and other typical investment products production dropped significantly, related industry companies are subject to the difficulties greater than last year . Excavators, metal cutting machine tools, metal rolling equipment, boiler wire drawing machine production decreased by 13.89% , 12.55% , 12.04% and 12%

2013 China’s exports to Vietnam extruder data analysis

This year, China ‘s exports extruder overall there was a substantial decline, from January to July data, the decline was 7.8 percent. We also note that presses extruder outlet is only half the overall decline in exports , and export price continued to decline extruder development of a major problem, although in July exports grew plastic extruding compound substantially , However, the export amount is still not improved.
Russia has long been the extruder consumer, since the first half of this year, Russia’s domestic economic environment is poor, investment and consumer apathy , extruders , there have been about 15% of the decline, but still had to July increased by 6.1% in .
It is noteworthy that the Vietnamese market , Vietnamese imports from China until this year extruder Overall not great, but this year the amount of its imports has been rising continuously , in plates, sheets and other architectural areas of investment is growing, July extruder its imports from China increased by the amount of nearly seven -fold. Despite the instability of this year, Vietnam ,wire drawing machine and the high interest rates make credit growth is slow, difficult to achieve total social investment objectives .
Vietnam General Statistics Office data show that in January industrial production index rose sharply in Vietnam , an increase of 21.1% , the recovery of industrial property release positive signals . In fact, the current from the domestic investment in Vietnam is relatively much smaller proportion of its investments mostly from abroad. January , foreign direct investment amounted to approximately $ 281 million , an increase of 74% , processing industry and manufacturing industry on foreign direct investment registered capital of 2.03 billion U.S. dollars, accounting for 72.1% of the total registered . While a number of countries including Japan, expressed the hope that companies continue to invest in Vietnam .
As strong investment from abroad , boosting the strong domestic demand , at least in this extruding machine state will continue for some time, so in the next period of time, Vietnam ‘s demand for plastics processing equipment will continue to grow .