A Computer Model of Starve Fed Single Screw Extrusion of Wood Plastic Composites

Wilczyński, Krzysztof; Buziak, Kamila

doi:10.3390/polym13081252

Cited by 11 publications

(5 citation statements)

References 43 publications

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“…Wilczyński et al, based on the polymer melting modeling [ 58 , 59 ], developed the first, and up to now the only available computer model of this process, i.e., the SSEM-Starve program [ 60 , 61 ]. This model was later extended to non-conventional screw configurations [ 62 , 63 ], and to extrusion of polymer blends [ 64 , 65 ] and wood plastic composites [ 66 , 67 ]. Recently, the global GSEM model was developed which enables the modeling of single screw extrusion both in the flood fed and starve fed mode [ 68 , 69 ].…”

Section: Modeling Of Extrusionmentioning

confidence: 99%

Optimization and Scale-Up for Polymer Extrusion

Nastaj

Wilczyński

2021

Polymers

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A review paper is presented on optimization and scale-up for polymer extrusion, both single screw and twin screw extrusion. Optimization consists in obtaining a multidimensional space of process output variables (response surface) on the basis of an appropriate set of input data and searching for extreme values in this space. Scaling consists in changing the scale of the process according to specific criteria, that is, changing the process while maintaining the scaling parameters at a level that is as close to the reference process parameters as possible. It consists in minimizing the differences between the parameters characterizing the reference process and the resulting process. This may be obtained by using optimization techniques leading to the minimization of discrepancies between the parameters of scaled processes. In the paper, it was stated that optimization and scale-up based on process simulation are more effective than those based on experimentation which is time consuming and expensive. The state-of-the-art on extrusion process modeling which is the basis of optimization and scale-up has been presented. Various optimization techniques have been discussed, and the Genetic Algorithms have been identified as powerful and very efficient. Optimization and scale-up based on the process simulation using Genetic Algorithms have been broadly reviewed and discussed. It was concluded that, up to date, there is a lack of optimization studies on the counter-rotating twin screw extrusion, although the global models of this process are known. There is also a lack of process simulation-based scaling-up studies, both on the counter-rotating twin screw extrusion and on the starve fed single screw extrusion. Finally, development perspectives in this field have been discussed.

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Section: Modeling Of Extrusionmentioning

confidence: 99%

Optimization and Scale-Up for Polymer Extrusion

Nastaj

Wilczyński

2021

Polymers

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“…In the fully filled section, the unmolten solid particles were suspended in the earlier molten polymer, and melting progressed by heat dissipation ( Figure 3 ). This model was later extended to the non-conventional screw configurations [ 46 , 47 ] and to the extrusion of polyblends and composites [ 48 , 49 , 50 ].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Experimental Studies on Polymer Melting and Flow in Injection Molding

Wilczyński

Buziak

2022

Polymers

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Injection molding, in addition to extrusion, is the most important technology in the polymer processing industry. When modeling injection molding, the global approach is necessary to take into account the solid polymer transport, polymer melting and the polymer melt flow. The model of polymer melting is fundamental for the development of such a global injection molding model. In the paper, the state-of-the-art of modeling and experimentation of the flow and melting in injection molding machines has been presented and discussed. It has been concluded that the existing mathematical models have no strong experimental basis. Therefore, experimentation of the polymer flow and melting in the injection molding machine has been performed, and the effect of processing conditions: the screw speed, the plasticating stroke and the back pressure on the process course has been investigated. Starving in the beginning sections of the screw has been observed, which was not presented in the literature so far. The novel concepts of injection molding modeling have been discussed.

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“…Pipes, plastic wires, 3D printer filaments, plastic film, and wire coating are applications of single screw extrusion. [34][35][36] This type of extruders is far more inexpensive and possess less shear as compared with other screw extruders. They have high throughput and wide range of materials can be processed due to ease in operation.…”

Section: Single Screw Extruder Systemmentioning

confidence: 99%

Recent advances in fused deposition modeling based additive manufacturing of thermoplastic composite structures: A review

Mishra

Negi

Kar

et al. 2022

Journal of Thermoplastic Composite Materials

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Fused deposition modeling (FDM) is one of the leading emerging technologies of Industry 4.0, which has been employed to develop sustainable engineering products, customized implants and sophisticated biomedical devices. However, the mechanical strength and durability of 3D printed parts is still lower than its conventional counterparts, which restrict its widespread use. In this regard, the use of short fibres (i.e. natural or artificial) and advanced nanomaterials to reinforce the existing polymer matrix has been drastically increased to improve the load bearing capacity of FDM printed parts. Hence, this article aims to provide a systematic review on thermoplastic composite structure prepared through FDM technology and summarizes the current knowledge about the use of various additives to improve the overall quality FDM parts. Moreover, the common defects associated with FDM printed composite structures and the methods required to improve the quality of FDM composite parts are discussed in this article.

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A Computer Model of Starve Fed Single Screw Extrusion of Wood Plastic Composites

Cited by 11 publications

References 43 publications

Optimization and Scale-Up for Polymer Extrusion

Optimization and Scale-Up for Polymer Extrusion

Modeling and Experimental Studies on Polymer Melting and Flow in Injection Molding

Recent advances in fused deposition modeling based additive manufacturing of thermoplastic composite structures: A review

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