## 4 Application of TX Plant Simulation to Improve the Performance of the Production Process  
Ensuring an organization's manufacturing process depends on the effective design of the manufacturing base, i.e., the manufacturing layout. Improper layout design results in cluttered and redundant material flows, unnecessary worker movements, wastage of production areas, etc. Ultimately, these imperfections lead to increased logistics costs and, therefore, increased overall production costs.  
Primarily, it is necessary to present what the production hall of the chosen organization looks like and to closely describe the wings in which the individual processes are performed. In order to introduce the production hall, its technical drawing developed in CAD system will be used (Figure 3). In Figure 3, it is possible to see the floor plan of the production hall and its division into individual sectors. This figure shows the direction of the material flow  
Figure 2: Virtual reality technology implemented in product design optimization.  
in the hall, and it also features marked locations, which demonstrate the placement of the machines for the production, treatment, inspection and packaging of the fibers [28].  
Figure 3 shows a hall divided into four sectors, which are separated by colors. The production takes place from right to left. It starts in sector A, which is marked in purple. This sector is located one floor above the other three sectors. In sector A, a synthetic fiber is produced from granulate, which is melted under high pressure and at high temperature and extruded through the so-called nozzles (metal circular plates with a number of small holes in a circular shape) in cooling shafts that go from sector A to a floor below to another sector. In these shafts, the produced fiber is cooled, and it slowly descends to the fiber treatment machines located in sector B.  
Sector B is marked with yellow color and is located on the ground floor. Fiber treatment machines are located in this section. The fiber is adjusted according to customer requirements. The oiling, siliconizing, braiding, stretching and dyeing of the fiber are conducted here. This sector has the highest density of machines and lines. The treated fiber continues through conveyor belts to sector C.  
Through sector C, which is marked in blue, the fiber passes on conveyor belts further to sector D. This part of the hall serves only to move the fibers from one process to another. In sector D, marked in red, the inspection of fibers is performed together with the subsequent packaging of individual spools and the packaging of entire pallets. Sector D also includes the organization's storage facilities and the dispatch of goods. In Figure 3, it is possible to see the direction of material flow, which is shown by the black arrows.  
The problem of the chosen organization and the place where the improvement needs to be implemented is sector C. It is a part of the hall with large dimensions, but it is not used to its full potential. There are only four conveyor belts that pass through the sector. There are empty trolleys for the transport of material and manufactured products present, but there is no production process performed here. Conveyor belts on such a long route (approx. 95 m) considerably slow down the whole process of fiber production. Workers inspecting the fiber must wait an unnecessarily long time to be able to inspect it. This will also be shown in the simulations or the resulting graphs from the simulations, which will be presented in other parts of the work. The equipment in the entire production hall is not optimally and efficiently distributed. In order to shorten the time of the production process and fully utilize sector C, it is necessary to modify the production process that is currently in operation.  
Figure 3: Drawing of the hall and its individual parts [35].