Effects of Salt, Sugar and Screw Speed on Processing and Product Variables of Corn Meal Extruded with a Twin-Screw Extruder

1990 ◽  
Vol 55 (1) ◽  
pp. 224-227 ◽  
Author(s):  
F. HSIEH ◽  
I.C. PENG ◽  
H.E. HUFF
Keyword(s):  
Twin Screw Extruder ◽  
Corn Meal ◽  
Screw Extruder ◽  
Screw Speed ◽  
Twin Screw

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.

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

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.

Study on Parameters Affecting the Morphology Development of Dynamically Vulcanized Thermoplastic Elastomers Based on EPDM/PP in a Co-Rotating Twin Screw Extruder

2004 ◽  
Vol 77 (5) ◽  
pp. 847-855 ◽  
Author(s):  
S. Shafiei Sararoudi ◽  
H. Nazockdast ◽  
A. A. Katbab
Keyword(s):  
Flow Behavior ◽  
Thermoplastic Elastomers ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Dynamic Vulcanization ◽  
Screw Speed ◽  
Blend Composition ◽  
Morphological Studies ◽  
Twin Screw ◽  
Morphology Development

Abstract The morphology development of dynamically vulcanized thermoplastic elastomers (TPVs) based on EPDM/PP in a modular intermeshing co-rotating twin screw extruder was studied. Effects of the blend composition and screw speed were considered. The morphological studies were carried out on the cryogenically fractured surface of the samples using Scanning Electron Microscopy (SEM) technique. The flow behavior and melt viscoelastic properties of the samples were also investigated by using Rheometric Mechanical Spectrometer (RMS). The SEM results from TPV samples produced in the twin screw extruder showed a matrix-disperse type morphology similar to those reported for the TPV samples prepared in an internal mixer. The dynamic vulcanization process imposed on the molten blends resulted in a remarkable increase in the steady state torque of the extruder whose extent was found to be dependent upon the EPDM content and screw speed. These results were explained in terms of an agglomerate structure formed between the cured rubber particles. The TPV samples, in particular the samples containing 60% of EPDM, showed a pronounced viscosity upturn and strong elastic modulus (G′) at low frequency range. It was demonstrated that these results in conjunction with the results of relaxation time distribution H(λ) of the samples can provide a great insight into understanding the role of the blend composition and the processing variables on morphology development in the TPV samples in the co-rotating twin screw extruder.

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