scholarly journals Optimasi Proses Pembuatan Mi Sorgum Dengan Menggunakan Ekstruder Ulir Ganda (Optimization of Sorghum Noodle Processing with Twin Screw Extruder)

1970 ◽  
Vol 3 (1) ◽  
pp. 1-7
Author(s):  
Tjahja Muhandri ◽  
Subarna Subarna ◽  
Ivan Mustakim
Keyword(s):  
Response Surface Methodology ◽  
Optimum Condition ◽  
Processing Condition ◽  
Cooking Loss ◽  
Optimum Process ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Screw Speed ◽  
Twin Screw ◽  
Optimum Processing Condition

The objective of this research was to optimize the sorghum noodle processing with two variables i.e. extruder temperature (80, 85, 90oC) and screw speed (10, 15, 20 Hz). The optimum process was chosen by using Response Surface Methodology (RSM), based on 2 parameters, i.e. cooking loss and elongation. The result of this research showed that the optimum processing condition with desirability of 0.736, was resulted from the combination of the extruder temperature of 85oC and screw speed of 20 Hz. The verification showed that the sorghum noodles from this optimum condition had cooking loss of 11.87 %, and elongation of 234.84.  Keywords: noodle, sorghum, optimization, twin screw extruder, RSM

scholarly journals OPTIMASI PROSES DAN FORMULA PADA PENGOLAHAN MI SAGU KERING (Metroxylon sagu) (Process and Formula Optimizations on Dried Sago Noodle Processing)

2016 ◽  
Vol 35 (04) ◽  
pp. 359 ◽  
Author(s):  
Adnan Engelen ◽  
Sugiyono Sugiyono ◽  
Slamet Budijanto
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Soybean Protein ◽  
Cooking Loss ◽  
Twin Screw Extruder ◽  
Process Variables ◽  
Glycerol Monostearate ◽  
Screw Extruder ◽  
Twin Screw ◽  
Metroxylon Sagu

The aim of this research was to optimize the processing of dried sago noodle. Sago noodle was made through a process using twin screw extruder with the addition of GMS (Glycerol Monostearate) and ISP (Isolated Soybean Protein).Process optimation was performed with RSM (response surface methodology) using three process variables, i.e. extruder temperature (65-80oC), GMS concentration (0-5%), and ISP concentration (0-10%). The optimum processcondition was temperature of 80oC, GMS of 4.5%, and ISP of 3.7%. The optimum condition produced dried noodlehaving a hardness of 2499.62 gf, stickiness of 235.12 gf, elongation of 168.96% and cooking loss of 6.23%.Keywords: Noodle, sago, starch, optimization ABSTRAKPenelitian ini bertujuan melakukan optimasi proses pada pembuatan mi sagu untuk menghasilkan mi sagu dengan karakteristik fisik yang baik. Mi sagu dihasilkan melalui optimasi proses menggunakan twin screw extruder dan penambahan glycerol monostearate (GMS), serta isolated soybean protein (ISP). Optimasi proses dilakukan menggunakan Response Surface Methodology (RSM) dengan tiga variabel proses yaitu: suhu ekstruder (65-80oC), konsentrasi GMS (0-5%), dan ISP (0-10%). Kondisi proses optimum diperoleh pada suhu 80oC, GMS (4,5%), danISP (3,7%). Kondisi optimum menghasilkan mi yang memiliki kekerasan 2499,62 gf, kelengketan 235,12gf, elongasi 168,96% dan cooking loss 6,23%,Kata kunci: Mi, sagu, pati, optimasi

Application of a New Twin-Screw Extruder to the Waste Tire Regeneration

2013 ◽  
Vol 561 ◽  
pp. 326-330
Author(s):  
Lei Guo ◽  
Qing Kun Liu ◽  
Chuan Sheng Wang
Keyword(s):  
Mechanical Properties ◽  
Reaction Temperature ◽  
Physical And Mechanical Properties ◽  
Crumb Rubber ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Screw Speed ◽  
Waste Tire ◽  
Twin Screw ◽  
Regeneration Effect

This paper uses a new twin-screw extruder for regeneration of waste tire crumb rubber, discusses the influence of screw speed and reaction temperature on the physical and mechanical properties of reclaimed rubber. Experimental results show that different screw speed and reaction temperature has a great impact on the physical and mechanical properties of the reclaimed rubber. When controls screw speed in the 60 ~ 90 r / min, reaction temperature at 170 to 210°C,the regeneration effect is the best. At this time, the physical and mechanical properties of reclaimed rubber, such as tensile strength, tear strength and elongation at break rate, is the best.

Study on the Melting Time of Solid Pellets in Melt in a Co-Rotating Twin Screw Extruder

2011 ◽  
Vol 314-316 ◽  
pp. 461-467
Author(s):  
Chang Liang ◽  
Kui Sheng Wang ◽  
Bo Jiang
Keyword(s):  
Theoretical Model ◽  
Melting Time ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Screw Speed ◽  
Processing Variables ◽  
Twin Screw ◽  
Set Up

In this paper, the process of solid pellets being molten in the liquid melt in a co-rotating twin screw extruder is studied. Melting sequence of multiple pellets in the melt is calculated to find out the location where pellet is molten finally, and then a theoretical model is set up in which a cylindrical pellet is placed here. Further research is carried out to study how orientation of pellet and processing variables influence the melting time. FEM software, FLUENT is adopted to simulate the cases. It could be concluded that melting mechanisms of solid pellets are mainly convection; Pellets in the pushing zones would be molten at first and pellets in the middle channel and trailing zones at last. The orientation of pellets, temperature of melt and screw speed affect the melting time of the solid significantly.

scholarly journals Degradation of Styrenic Plastics during Recycling: Accommodation of PP within ABS after WEEE Plastics Imperfect Sorting

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1439
Author(s):  
Charles Signoret ◽  
Pierre Girard ◽  
Agathe Le Guen ◽  
Anne-Sophie Caro-Bretelle ◽  
José-Marie Lopez-Cuesta ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Design Of Experiments ◽  
Tensile Properties ◽  
Response Surface ◽  
Impact Resistance ◽  
Average Diameter ◽  
Contamination Rate ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Twin Screw

With the development of dark polymers for industrial sorting technologies, economically profitable recycling of plastics from Waste Electrical and Electronical Equipment (WEEE) can be envisaged even in the presence of residual impurities. In ABS extracted from WEEE, PP is expected to be the more detrimental because of its important lack of compatibility. Hence, PP was incorporated to ABS at different rates (2 to 8 wt%) with a twin-screw extruder. PP was shown to exhibit a nodular morphology with an average diameter around 1–2 µm. Tensile properties were importantly diminished beyond 4 wt% but impact resistance was decreased even at 2 wt%. Both properties were strongly reduced as function of the contamination rate. Various potential compatibilizers for the ABS + 4 wt% PP system were evaluated: PPH-g-MA, PPC-g-MA, ABS-g-MA, TPE-g-MA, SEBS and PP-g-SAN. SEBS was found the most promising, leading to diminution of nodule sizes and also acting as an impact modifier. Finally, a Design Of Experiments using the Response Surface Methodology (DOE-RSM) was applied to visualize the impacts and interactions of extrusion temperature and screw speed on impact resistance of compatibilized and uncompatibilized ABS + 4 wt% PP systems. Resilience improvements were obtained for the uncompatibilized system and interactions between extrusion parameters and compatibilizers were noticed.

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