Dobór liczby i położenia rowków uplastyczniających cylindra wytłaczarki jako możliwość sterowania procesem wytłaczania

J. W. Sikora

Published : 2022-08-30

Vol. 51 No. 4 (2006)

Choice of the number and placement of the extruder barrel plasticating grooves as the possibility of extrusion process controlling

J. W. Sikora

Abstract

The results of the studies of the influence of the number and placement of the extruder barrel plasticating grooves, in relation to the hopper and the direction of the screw rotation as well as in relation each to other, on the values characterizing the process of autothermal extrusion of low density polyethylene (PE-LD) were presented. A single-screw extruder of the screw diameter 25 mm and L/D = 18, operating autothermally, was used and screw rotation frequency was fixed. A grooved sleeve with four longitudinal plasticating grooves, placed symmetrically on the circumference, was fixed in the barrel. Their depths could be changed continuously and independently making possible to reach the required configuration of the number (from 0 to 4) and placement of the activated grooves (Table 1). The appropriate direct and indirect resulting factors, variable, constant or disturbing were accepted. The dependence of the following factors: polymer flow rate (Fig. 2), energy efficiency of the extruder (Fig. 3) and plasticating system (Fig. 4), unit energy consumption taken by the extruder (Fig. 5) and plasticating system (Fig. 6) on the number and placement of the activated grooves was found. It was found that these factors, in agreement with the assumptions done, significantly influenced the course of the process investigated. The placement of the activated grooves (not their number) in relation to the hopper and each to other appeared to be of crucial importance.

Keywords

wytłaczanie autotermiczne ; strefa rowkowana ; rowki wzdłużne ; liczba i położenie rowków ; polietylen małej gęstości autothermal extrusion ; grooved section ; longitudinal grooves ; number and placement of the grooves ; low-density polyethylene

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Sikora, J. W. (2022). Choice of the number and placement of the extruder barrel plasticating grooves as the possibility of extrusion process controlling. Polimery, 51(4), 285–292. Retrieved from https://ichp.vot.pl/index.php/p/article/view/1525

References

Decker H.: ,,Die Spritzmaschine", Paul Troester Machinenfabrik, Hanower 1941.

2. Darnell W. H., Mol E. A. J.: Soc. Plast. Eng. J. 1956, 4, 20.

3. Fusch G.: Plastverarbeiter 1968,19, 765 oraz 1969, 20, 23711970,21,235.

4. Menges G., Hegele R.: Plastverarbeiter 1972, 23,332.

5. Burmann G., Fisher P., Michels R.: ,,Hightech Extrusion with Barrier-mixing Screw and Spiral Mandrel, Co-extrusion Dies", Fifth International Conference APT'03, Katowice 2003, materiały, str. 1.

6. Helmy H.: Plast. Eng. 1983, 8,43.

7. Rautenbach R., Peiffer H.: Kunststoffe 1982,72,262.

8. Sikora J. W.: Polimery 1998,43,548.

9. Schiedrum H.-O.: Kunststoffe 1983, 73,2.

10. Grunschloss E.: Int. Polym. Proc. 2003,18,226.

11. Langecker E., Langecker G., Fillman W.: Plastverarbeiter 1977,2S, 531

12. Grunschloss E.: ,,Solid Conveying in Single Screw Extruders with Helical Grooves in the Barrel", Society of Plastics Engineers — Annual Technical Conference (SPE ANTEC), New Orleans 1979, materiały, str. 160.

13. Potente H.: Kunststoffe 1985, 75,439.

14. Diakun J.: Plastverarbeiter 1990, 41, 70.

15. Sikora J. W.: „,Studium procesu wytłaczania autotermicznego i strefy rowkowanej wytłaczarki", Wy-dawnictwa Uczelniane Politechniki Lubelskiej, Lublin 2000.

16. Morita Y, Takai T., Yamaguchi S.: ,,Ultra-high Speed Extrusion of Highly Expanded Polyethylene Insulation for Communication Cables", International Wire and Cable Symposium, Fort Monmouth 1984, materiały, str. 287.

17. Imping W.: ,,Optimized Processing of Polypropylen on Adiabatic Extruders", The Polymer Processing Society, Twelfth Annual Meeting, Sorrento (Włochy) 1996, materiały, str. 351.

18. Sikora J. W., Broel-Plater B.: Polimery 2004,49,195.

19. Broel-Plater B., Sikora J. W.: Polimery 2004,49,114.

20. www.basellorlen.pl

21. Żuchowska D.: ,,Polimery konstrukcyjne — przetwórstwo i właściwości", WNT, Warszawa 1995, str. 158—161.

22. Czaja K.: ,,Poliolefiny", WNT, Warszawa 2005, str. 84—98.

23. Pogański Z.:,,Metodyka badań doświadczalnych", Zakład Graficzny Politechniki Krakowskiej, Kraków 1981, str. 41.

24. Sikora J. W., Kapuśniak T.: Polimery 2005, 50, 748.

25. Stasiek J.: Polimery 1981,26,27.

26. Sikora R.:,,Przetwórstwo tworzyw wielkocząsteczkowych". Wydawnictwo Edukacyjne, Warszawa 1993, str. 30.

27. Rauwendaal Ch., Sikora J. W.: Int. Polym. Proc. 2000, 15,133.

28. Sikora R.: Polimery 1987, 32, 247.

29. Diakun J.: Polimery 1990, 35,275.

30. White J. L., Potente H.: ,,Screw Extrusion", Hanser Publishers, Monachium 2003, str. 198.

31. Stasiek J.: Polimery 2005, 50, 881.

32. Garbacz T.: Polimery 2004, 49,23.

33. KlepkaT.:Polimery 2004,49,123.

34. Samujło B.: Polimery 2003, 48,540.

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