TY  - CONF
AU  - Pjević, Miloš
AU  - Popović, Mihajlo
AU  - Milutinović, Mladomir
AU  - Movrin, Dejan
AU  - Stefanović, Ljiljana
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7315
AB  - In the last decade, owing to its accessibility, additive technologies have been occupying an increasingly significant percentage share in the production of new components. Whether it pertains to the creation of prototypes, test or final tools, and even direct manufacturing, additive technologies can be found in all spheres of product development. One of the key advantages of additive technologies is reducing the final cost due to the relatively low cost of implementing said technology. For this reason, it's not surprising that recent research in the field of additive technologies frequently focuses on rapid tooling, specifically on injection molding parts. By reducing the cost of tools, a substantial impact can be made on the final product's cost and, consequently, on market competitiveness. However, the application of additive technologies in the realm of polymer injection molding is not straightforward and presents numerous challenges. Given that this involves creating polymer parts within a tool that is also made of polymer, the task can be exceptionally complex. Physical properties such as material density or the interaction between two polymers can adversely influence the polymer injection molding process within a polymeric insert. This paper will present the influence of two types of polymers (PP and HDPE) on manufacturing (injection molding) parameters and the potential of their application in the rapid tooling.
PB  - Society of Production Engineering
PB  - University of Novi Sad, faculty of Technical Sciences
C3  - 39th International Conference on Production Engineering of Serbia
T1  - Impact of polymer types on applicability in rapid tooling
EP  - 306
SP  - 301
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7315
ER  - 

@conference{
author = "Pjević, Miloš and Popović, Mihajlo and Milutinović, Mladomir and Movrin, Dejan and Stefanović, Ljiljana",
year = "2023",
abstract = "In the last decade, owing to its accessibility, additive technologies have been occupying an increasingly significant percentage share in the production of new components. Whether it pertains to the creation of prototypes, test or final tools, and even direct manufacturing, additive technologies can be found in all spheres of product development. One of the key advantages of additive technologies is reducing the final cost due to the relatively low cost of implementing said technology. For this reason, it's not surprising that recent research in the field of additive technologies frequently focuses on rapid tooling, specifically on injection molding parts. By reducing the cost of tools, a substantial impact can be made on the final product's cost and, consequently, on market competitiveness. However, the application of additive technologies in the realm of polymer injection molding is not straightforward and presents numerous challenges. Given that this involves creating polymer parts within a tool that is also made of polymer, the task can be exceptionally complex. Physical properties such as material density or the interaction between two polymers can adversely influence the polymer injection molding process within a polymeric insert. This paper will present the influence of two types of polymers (PP and HDPE) on manufacturing (injection molding) parameters and the potential of their application in the rapid tooling.",
publisher = "Society of Production Engineering, University of Novi Sad, faculty of Technical Sciences",
journal = "39th International Conference on Production Engineering of Serbia",
title = "Impact of polymer types on applicability in rapid tooling",
pages = "306-301",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7315"
}

Pjević, M., Popović, M., Milutinović, M., Movrin, D.,& Stefanović, L.. (2023). Impact of polymer types on applicability in rapid tooling. in 39th International Conference on Production Engineering of Serbia
Society of Production Engineering., 301-306.
https://hdl.handle.net/21.15107/rcub_machinery_7315

Pjević M, Popović M, Milutinović M, Movrin D, Stefanović L. Impact of polymer types on applicability in rapid tooling. in 39th International Conference on Production Engineering of Serbia. 2023;:301-306.
https://hdl.handle.net/21.15107/rcub_machinery_7315 .

Pjević, Miloš, Popović, Mihajlo, Milutinović, Mladomir, Movrin, Dejan, Stefanović, Ljiljana, "Impact of polymer types on applicability in rapid tooling" in 39th International Conference on Production Engineering of Serbia (2023):301-306,
https://hdl.handle.net/21.15107/rcub_machinery_7315 .

TY  - CONF
AU  - Stefanović, Ljiljana
AU  - Movrin, Dejan
AU  - Milutinović, Mladomir
AU  - Popović, Mihajlo
AU  - Pjević, Miloš
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7313
AB  - Polypropylene (PP) and high-density polyethylene (HDPE) are the most common polymers in modern industrial plastic part production. Both materials can be easily shaped through injection molding, which is one of the most widespread processing methods for polymer materials. When manufacturing parts from PP and HDPE, it is necessary to achieve the required mechanical characteristics that depend on processing parameters (melt temperature, tool temperature, cooling time, etc.). This paper presents research on the impact of tool temperature on the tensile strength of injection-molded test specimens made from PP and HDPE. Since both materials contain amorphous and crystalline phases, changes in the ratio of phases are possible depending on the tool temperature, which leads to mechanical properties (tensile strength) changes. In the experimental assessment of tensile strength for polypropylene (PP) and high-density polyethylene (HDPE) specimens, conducted at varying tool temperatures (20°C, 50°C, and 80°C), notable disparities in tensile strength values were observed. These variations were attributed to alterations in the crystalline phase content within the materials, instigated by disparate cooling rates resulting from utilizing distinct tool temperatures.
PB  - Society of Production Engineering
PB  - University of Novi Sad, faculty of Technical Sciences
C3  - 39th International Conference on Production Engineering of Serbia
T1  - Influence of injection molding process parameters on the mechanical properties of polypropylene and polyethylene parts
EP  - 300
SP  - 295
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7313
ER  - 

@conference{
author = "Stefanović, Ljiljana and Movrin, Dejan and Milutinović, Mladomir and Popović, Mihajlo and Pjević, Miloš",
year = "2023",
abstract = "Polypropylene (PP) and high-density polyethylene (HDPE) are the most common polymers in modern industrial plastic part production. Both materials can be easily shaped through injection molding, which is one of the most widespread processing methods for polymer materials. When manufacturing parts from PP and HDPE, it is necessary to achieve the required mechanical characteristics that depend on processing parameters (melt temperature, tool temperature, cooling time, etc.). This paper presents research on the impact of tool temperature on the tensile strength of injection-molded test specimens made from PP and HDPE. Since both materials contain amorphous and crystalline phases, changes in the ratio of phases are possible depending on the tool temperature, which leads to mechanical properties (tensile strength) changes. In the experimental assessment of tensile strength for polypropylene (PP) and high-density polyethylene (HDPE) specimens, conducted at varying tool temperatures (20°C, 50°C, and 80°C), notable disparities in tensile strength values were observed. These variations were attributed to alterations in the crystalline phase content within the materials, instigated by disparate cooling rates resulting from utilizing distinct tool temperatures.",
publisher = "Society of Production Engineering, University of Novi Sad, faculty of Technical Sciences",
journal = "39th International Conference on Production Engineering of Serbia",
title = "Influence of injection molding process parameters on the mechanical properties of polypropylene and polyethylene parts",
pages = "300-295",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7313"
}

Stefanović, L., Movrin, D., Milutinović, M., Popović, M.,& Pjević, M.. (2023). Influence of injection molding process parameters on the mechanical properties of polypropylene and polyethylene parts. in 39th International Conference on Production Engineering of Serbia
Society of Production Engineering., 295-300.
https://hdl.handle.net/21.15107/rcub_machinery_7313

Stefanović L, Movrin D, Milutinović M, Popović M, Pjević M. Influence of injection molding process parameters on the mechanical properties of polypropylene and polyethylene parts. in 39th International Conference on Production Engineering of Serbia. 2023;:295-300.
https://hdl.handle.net/21.15107/rcub_machinery_7313 .

Stefanović, Ljiljana, Movrin, Dejan, Milutinović, Mladomir, Popović, Mihajlo, Pjević, Miloš, "Influence of injection molding process parameters on the mechanical properties of polypropylene and polyethylene parts" in 39th International Conference on Production Engineering of Serbia (2023):295-300,
https://hdl.handle.net/21.15107/rcub_machinery_7313 .

TY  - CONF
AU  - Pjević, Miloš
AU  - Popović, Mihajlo
AU  - Milutinović, Mladomir
AU  - Movrin, Dejan
AU  - Stefanović, Ljiljana
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5285
AB  - In this paper, an experimental examination/analyzing applicability and machinability of the polymer material’s core and cavity formed using additive technology (rapid tooling) was conducted. Achieving the price reduction of the final product, as well as the price of the mold for plastic injection through the introduction of rapid tooling injection molding can be applied, not only to mass production, but also to small series production. This research is limited to obtaining plane parts of simpler geometry from polypropylene polymer material. Obtained results showed that, at this point, it is not directly possible to completely produce a core and cavity only through additive technologies. In order to achieve some tolerances at specific places, it is still necessary that the core and cavities are machined with conventional methods. On the other hand, it turned out that by using a polymer core and cavity, it is possible to produce a smaller series of the parts.
PB  - University of East Sarajevo, Faculty of Mechanical Engineering East Sarajevo
C3  - Proceedings of 6th International Scientific Conference - COMETa2022
T1  - Experimental examination of the applicability of additive technologies in the field of rapid tooling - injection molding
EP  - 247
SP  - 241
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5285
ER  - 

@conference{
author = "Pjević, Miloš and Popović, Mihajlo and Milutinović, Mladomir and Movrin, Dejan and Stefanović, Ljiljana",
year = "2022",
abstract = "In this paper, an experimental examination/analyzing applicability and machinability of the polymer material’s core and cavity formed using additive technology (rapid tooling) was conducted. Achieving the price reduction of the final product, as well as the price of the mold for plastic injection through the introduction of rapid tooling injection molding can be applied, not only to mass production, but also to small series production. This research is limited to obtaining plane parts of simpler geometry from polypropylene polymer material. Obtained results showed that, at this point, it is not directly possible to completely produce a core and cavity only through additive technologies. In order to achieve some tolerances at specific places, it is still necessary that the core and cavities are machined with conventional methods. On the other hand, it turned out that by using a polymer core and cavity, it is possible to produce a smaller series of the parts.",
publisher = "University of East Sarajevo, Faculty of Mechanical Engineering East Sarajevo",
journal = "Proceedings of 6th International Scientific Conference - COMETa2022",
title = "Experimental examination of the applicability of additive technologies in the field of rapid tooling - injection molding",
pages = "247-241",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5285"
}

Pjević, M., Popović, M., Milutinović, M., Movrin, D.,& Stefanović, L.. (2022). Experimental examination of the applicability of additive technologies in the field of rapid tooling - injection molding. in Proceedings of 6th International Scientific Conference - COMETa2022
University of East Sarajevo, Faculty of Mechanical Engineering East Sarajevo., 241-247.
https://hdl.handle.net/21.15107/rcub_machinery_5285

Pjević M, Popović M, Milutinović M, Movrin D, Stefanović L. Experimental examination of the applicability of additive technologies in the field of rapid tooling - injection molding. in Proceedings of 6th International Scientific Conference - COMETa2022. 2022;:241-247.
https://hdl.handle.net/21.15107/rcub_machinery_5285 .

Pjević, Miloš, Popović, Mihajlo, Milutinović, Mladomir, Movrin, Dejan, Stefanović, Ljiljana, "Experimental examination of the applicability of additive technologies in the field of rapid tooling - injection molding" in Proceedings of 6th International Scientific Conference - COMETa2022 (2022):241-247,
https://hdl.handle.net/21.15107/rcub_machinery_5285 .