Numerical simulation of the extrusion process for food materials in a single-screw extruder

1996 ◽  
Vol 30 (3-4) ◽  
pp. 449-467 ◽  
Author(s):  
Raman V. Chiruvella ◽  
Y. Jaluria ◽  
Mukund V. Karwe
Keyword(s):  
Numerical Simulation ◽  
Extrusion Process ◽  
Screw Extruder ◽  
Single Screw ◽  
Single Screw Extruder

scholarly journals Characteristics of nanoclay reinforced starch biocomposites through the extrusion process

2018 ◽  
Vol 204 ◽  
pp. 00008
Author(s):  
Heru Suryanto ◽  
Alfian Widi Rahmawan ◽  
Solichin ◽  
Sahana Rizki Tata ◽  
Uun Yanuhar
Keyword(s):  
Tensile Strength ◽  
Functional Group ◽  
Extrusion Process ◽  
Cassava Starch ◽  
Diffraction Peak ◽  
Screw Extruder ◽  
Materials Engineering ◽  
Single Screw ◽  
Single Screw Extruder ◽  
Composite Properties

The development of materials engineering has led to many significant discoveries one of which is biocomposite with its diverse applications. The addition of reinforcing materials in biopolymers improves the composite properties. This study aimed at investigating the effect of adding nanoclay on the tensile strength, morphology, functional group, and structure of extruded biocomposites with cassava starch matrix. This experimental research involved different concentrations of nanoclay i.e. 0%, 2.5%, 5%, 7.5%. The extrusion process was performed using a single screw extruder at 120°C. The samples were characterized by tensile testing, XRD, and SEM. The biocomposite reinforced with 5% nanoclay had the highest tensile strength of 10.8 MPa. The highest diffraction peak at 2θ of 19.4° appeared in the sample added with 5% nanoclay. The addition of excessive amounts of nanoclay can hinder the formation of exfoliated structures.

The Effect of Screw Speed on Extrusion Quality of the Single-Screw Extruder

2014 ◽  
Vol 941-944 ◽  
pp. 1715-1719
Author(s):  
Yuan Lou Gao ◽  
Xin Wang ◽  
Li Zhou
Keyword(s):  
Extrusion Process ◽  
Screw Extruder ◽  
Screw Speed ◽  
Element Analysis ◽  
Outlet Pressure ◽  
Single Screw ◽  
Single Screw Extruder ◽  
Multi Phase Flow ◽  
Multi Phase

This paper adopts the method of multi-phase flow to simulate the extrusion process of single-screw extruder based on different screw speed by using the finite element analysis software, and get the conclusion that the screw speed has a significant effect on the extrusion quality and outlet pressure of the single-screw extruder. With the increase of the screw speed, the extrusion quality of the single-screw extruder gets worse and the outlet pressure of the single-screw extruder increases.

Influence of Helical Grooved Structure on Mixing Process in a Single Screw Extruder

2013 ◽  
Vol 561 ◽  
pp. 212-217 ◽  
Author(s):  
Jian Wang
Keyword(s):  
Numerical Simulation ◽  
Groove Depth ◽  
Isothermal Flow ◽  
Mixing Process ◽  
Polymer Extrusion ◽  
Screw Extruder ◽  
Mixing Performance ◽  
Single Screw ◽  
Extrusion Processing ◽  
Single Screw Extruder

Mixing performance is an important consideration in polymer extrusion processing. Besides a variety of mixing elements used in the extrusion industry, barrel also plays an important role to improve the mixing performance of the extrusion. The influence of helical grooved structure in inner wall of traditional single-extruder barrel on mixing process was investigated by using numerical simulation. POLYFLOW was used to calculate the 3D isothermal flow fields and mixing process of PVC-R in a single screw extruder with and without helical grooved barrel. Mixing performance of PVC-R in these two different structures was studied comparably. It was found that it could improve the mixing performance by helical grooved structure in the barrel, but a suitable groove depth of the helically grooved barrel should be calculated in order to avoid the extrusion throughput.

scholarly journals Influence of the parameters of the extrusion process on the properties of PLA composites with the addition of graphite

2021 ◽  
Vol 1199 (1) ◽  
pp. 012057
Author(s):  
K Fiedurek ◽  
P Szroeder ◽  
M Macko ◽  
A Raszkowska-Kaczor ◽  
N Puszczykowska
Keyword(s):  
Power Consumption ◽  
Cone Calorimeter ◽  
Extrusion Process ◽  
Screw Extruder ◽  
Single Screw ◽  
Grain Sizes ◽  
Single Screw Extrusion ◽  
Single Screw Extruder ◽  
Screw Extrusion ◽  
Screw Diameter

Abstract The main purpose of the work is to determine the influence of the screw diameter on the parameters of the single screw extrusion process, such as power consumption, torque, throughput, the actual temperature of the melt on the extruder die, as well as phase s with the use of a laboratory single-screw extruder.. The research was carried out with the use of various plasticizing systems. Two types of graphite: pre-expanded and normal grade with different grain sizes were used in the research. Flammability tests of the obtained composites were carried out using cone calorimeter.

Analysis of Melting Process and Numerical Simulation of Pure UHMW-PE Pipe Based on Molding in Barrel Technology

2009 ◽  
Vol 87-88 ◽  
pp. 250-255
Author(s):  
Jian Hua Qin ◽  
Chun Hui Liu ◽  
Wen Feng Gao ◽  
Chuan Hao Yu
Keyword(s):  
Numerical Simulation ◽  
New Technology ◽  
Melting Process ◽  
Raw Material ◽  
Temperature Control System ◽  
Screw Extruder ◽  
Forming Process ◽  
Molding Method ◽  
Single Screw ◽  
Single Screw Extruder

Ultra High Molecular Weight Polyethylene(UHMW-PE) pipe is a kind of pipe of thermoplastic engineering plastic with excellent comprehensive performance, but the difficulty in molding is a technical bottleneck which has already affected the extensive application of pipe of pure UHMW-PE. Molding in barrel on the Single screw extruder is a new technology of extrusion molding method, which can continuously carry out pipe of pure UHMW-PE, the most significant advantages of the technology are as follows: under the circumstances of no need to feed any additives in the whole forming process, it can continuously carry out pipe of pure UHMW-PE, and the extrusion molding speed of it is up to 12 m/h above. During the process of it based on molding in barrel technology, one of the main factors influencing to whether UHMW-PE pipe can be successfully molded or not is whether the melting process of raw material is adequate and appropriate or not. This article will elaborate melting characteristics of raw material of UHMW-PE, establishment of mathematical model of melting process, and numerical simulation of melting process, which belong to the forming process of molding in barrel, and will provide a theoretical basis for correctly designing the structure of single screw extruder and temperature control system of single-screw extruder, based on Molding in Barrel Technology.

scholarly journals Technological properties of precooked flour containing coffee powder and rice by thermoplastic extrusion

2013 ◽  
Vol 33 (1) ◽  
pp. 7-13 ◽  
Author(s):  
Reginaldo Ferreira da Silva ◽  
Rosemary Gualberto Fonseca Alvarenga Pereira ◽  
José Luis Ramirez Ascheri ◽  
Diego Palmiro Ramirez Ascheri
Keyword(s):  
Water Solubility ◽  
Extrusion Process ◽  
Human Consumption ◽  
Technological Properties ◽  
Screw Extruder ◽  
The Third ◽  
Single Screw ◽  
Single Screw Extruder ◽  
Production And Consumption ◽  
Coffee Powder

Although Brazil is a country of tradition in both the production and consumption of coffee, the most of the coffee is consumed as a beverage, which reduces greatly the competitiveness on international market, for reducing the chances of supplying the product under other forms of consumption. Owing to that, the aim of this study was developing a precooked mixed flour containing coffee powder and rice for use in coffee flavored products. Mixtures of rice and coffee in the proportions of 900:100, 850:150 and 800:200 g, respectively, were processed in a single screw extruder (Brabender DS-20, Duisburg, German) and the effect of the extrusion process on the variables moisture content (16%, 18% and 20%) and temperature in the third extruding zone (140 °C, 160 °C and 180 °C) was studied. The results for expansion index ranged from 2.91 to 11.11 mm in diameter; the water absorption index from 4.59 to 6.33 g gel/g sample and the water solubility index varied from 4.05% to 8.57%. These results showed that, despite coffee powder influenced the variables studied, the expanded product after milling resulted in a extruded mixture with good absorption and water solubility indices, which favors the use of the precooked mixed flour for human consumption.

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