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ZSK Mv (MEGAvolume)

ZSK Mv (MEGAvolume). Plants and Extrusion Systems. Coperion: Together - for Our Customers' Success. America. Europe. Asia . 2,000 employees. 20 subsidiaries worldwide. EUR400m sales . GEORG FISCHER +GF+ (50,1%). West Private Equity / WestLB (49,9%) .

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ZSK Mv (MEGAvolume)

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  1. ZSK Mv (MEGAvolume)

  2. Plants and Extrusion Systems

  3. Coperion: Together - for Our Customers' Success America Europe Asia 2,000 employees 20 subsidiaries worldwide EUR400m sales GEORG FISCHER +GF+ (50,1%) West Private Equity / WestLB (49,9%)

  4. ZSK MEGAvolume Compounding with large screw channel volume • MEGAcompounder with high torque • Introduced at K‘ 1995 • MEGAvolumewith large screw volume • Introduced at K‘ 2001 • represents a second ZSK series

  5. ZSK MEGAvolume Compounding with large screw channel volume • MEGAvolumewith large volume • for products with low bulk density • for processes with low specific energy input (< 0.1 kWh/kg)

  6. Characteristic dimensions ofco-rotating twin-screws 2-flighted profile Diameter ratio:OD / ID Specific torque:Md / a3 OD OD = Outer screw diameter ID= Inner screw diameter a = Center distance ID a Weller, 8.1.2002

  7. OD to ID Ratio

  8. Development of the ZSK Balanced ratio of free volume and torque ZSK Standard OD/ ID= 1.25 ZSK-Variable OD/ ID= 1.44 Torque Free volume ZSK Super Compounder ZSK MEGA Compounder OD/ ID= 1.55 OD/ID Free volume and permissible torque as a function OD/ID CONTINUA OD/ ID= 1.71 Weller, 8.1.2002

  9. Balanced ratio of free volume and torque Torque Free Volume Increasing Torque and Volume ZSK-variabel Da / Di = 1,44 Flight Dep[th ZSKSuper Compounder Increasing Volume Free Volume and Allowable Torque shown as a function of Flight Depth ZSK MEGAvolume Da / Di = 1,55 Da / Di = 1,80 ZSK MEGAcompounder Da / Di = 1,55 Increasing Torque ZSK Mv (MEGAvolume) ZSK Standard Da / Di = 1,25 Same Center Distance Same Center Distance

  10. Da/Di = 1,8 v u h max ZSK Mv Sheer speed gamma = vu /h Da/Di = 1,55 v u h' max ZSK Mv (MEGAvolume) • Better Feed • Lower Sheer • Lower Material Temperature • Lower work on the product - depending upon the process can produce better quality • Reliable Devolitilization Result: Deeper Flights Allow Higher Screw Speed

  11. Effect of OD/ID & RPM on average shear rate 500 450 400 350 300 250 Ave Shear Rate (sec^-1) 200 150 100 50 0 0 100 200 300 400 500 600 RPM 1.22 OD/ID 1.44 OD/ID 1.55 OD/ID 1.71 OD/ID

  12. ZSK Mv (MEGAvolume) • Higher Volumes through Expansion of the Barrel Bores • and Deeper Cut Screw Flights MEGAcompounderDa / Di = 1,55 MEGAvolumeDa / Di = 1,8 Di Da

  13. ZSK Mv (MEGAvolume) • Progression of Free Volume

  14. ZSK Mv (MEGAvolume) • Application Examples • Experiences with Process Technology and Production • Processing of Highly Filled Compounds- Increase of throughput up to 50% with the same RPM- Increase of filler (SiO2) from 15% to 20% • Production of Powder Coatings- 60% higher discharge efficiency- Possibility of feeding higher rates of fines • Food Extrusion- 60% more throughput in the production of pet foods

  15. ZSK Mv (MEGAvolume)

  16. ZSK Mv (MEGAvolume)

  17. ZSK Mv (MEGAvolume) End Barrel ZSK 62 Mv

  18. ZSK Mv (MEGAvolume) Tie Rod Arrangement for the ZSK 62 Mv

  19. ZSK Mv (MEGAvolume) Arrangement fo ZSK 32/34 Mv

  20. If you need even high rates

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