La presente investigación tiene por objetivo presentar una propuesta de mejora para optimizar el proceso de producción en una empresa Panificadora aplicando la herramienta del Lean Manufacturing, lo cual permite mejorar el desempeño del proceso productivo y de los procesos. Para ello se realizará un análisis de la problemática y las posibles causas para tomar como base de la mejora continua que se propondrá incrementando productividad y rentabilidad. Luego del proceso de análisis se han identificado los siguientes problemas: ausencia de una adecuada asignación del personal, ausencia de un adecuado programa de mantenimiento, ausencia de una adecuada distribución de planta, ausencia de personal calificado y ausencia de un adecuado control e insumos, lo cual impide el cumplimiento del programa de producción. La presente tesis está conformada por tres capítulos los que en su conjunto permiten definir claramente la problemática, la propuesta de solución, la evaluación económica de la propuesta de solución y las conclusiones y recomendaciones. Finalmente, la presente tesis puede utilizarse como base para futuras investigaciones en la mejora del proceso de gestión de la producción, sin embargo, se debe evaluar las variables independientes en cada caso, en particular, ya que la presente tesis se limita al análisis del proceso productivo de la empresa Panificadora. / The objective of this research is to present an improvement proposal to optimize the production process in a bakery company by applying the Lean Manufacturing tool, which allows improving the performance of the production process and processes. For this, an analysis of the problem and possible causes will be carried out to take as a basis for continuous improvement that will be proposed by increasing productivity and profitability. After the analysis process, the following problems have been identified: absence of an adequate personnel assignment, absence of an adequate maintenance program, absence of an adequate plant distribution, absence of qualified personnel, and absence of adequate control and supplies, which which prevents the fulfillment of the production program. This thesis is made up of three chapters, which together allow a clear definition of the problem, the solution proposal, the economic evaluation of the solution proposal and the conclusions and recommendations. Finally, this thesis can be used as a basis for future research in the improvement of the production management process, however, the independent variables must be evaluated in each case, in particular, since this thesis is limited to the analysis of the process production of the bakery company. / Trabajo de Suficiencia Profesional

This project was implemented during spring 2021 as a bachelor thesis for the Bachelor Engineering Program in Mechanical Engineering at Karlstads University. The project wascarried out in collaboration with Stora Enso Skoghall Mill, which produces different types of cardboard material. In 2020, the overall production capacity was 875 000 tons of cardboard material. In November 2020 Skoghall Mill was authorized to precede an investigation regarding a possible production increase, which would result in a self-sufficient pulp production and an increase of 120 000 tons cardboard material per year.  The cardboard is winded into rolls before they are being transported to the customers. Before the transportation, the reels are given a protecting wrapping. This procedure occurs in a production segment called the Wrapping Line, which is a part of the Finishing Department. The Wrapping Line is one of the production areas that would be affected by a potential increase of production. Therefore, the responsible of the unit wanted to examine if the Wrapping Linehad enough capacity for a potential increase of this size.  The purpose of this paper was to carry out a capacity analysis for the line, identify bottlenecks in the flow and to present arrangements to make the production line more effective. Furthermore, an additional purpose was to identify how long the maintenance stops could beif the potential production increase is approved.  The capacity analysis was carried out using a simulation software called JaamSim. A model of the existing system was built in JaamSim, which afterwards was analyzed. The capacity analysis showed that Emballeringen has the needed capacity if the production increase isapproved. The capacity analysis also displayed the possible length of maintenance stops. Arrangements in flow was presented and prioritized so that the capacity in the Wrapping Linewould increase further.

Manufacturing companies throughout the world are interested in reducing the time between a customer placing an order and them receiving the payment for that order. This premise is something that is a central characteristic for the Lean philosophy, and is one of the reasons to apply it. Today manufacturers around the world are embracing Lean techniques in order to reduce waste and increase productivity, and also increase the inventory turns, which reflects in an improvement of cash flow for the company. Nowadays, with all the financial turmoil, every company is looking forward to reduce the inventories, to work with Just in Time supply chains, to develop production systems that reduce the scrap and produce only what is needed, saving space, and freeing up time to work on new design and be at the edge of innovation in order to gain market share and keep improving. This master thesis is focused on implementing the Lean principles in a pillow production line, in order to achieve it, a series of techniques to assess the facility where implemented, which allowed to understand how the facility was working, where is the bottleneck, and to understand the function of it as a system, avoiding to focus on a single point but viewing it as a whole, where each part contributes in a specific and unique way, but where all of them are necessary. Applying Lean principles is a daunting task that takes a long time, a never ending trial and error process, because of this the goal of this study is to develop the bases for a Lean transformation, a schedule for the implementation will be developed and proposed to the company, after analyzing the facility. The study reveals that it is possible to reduce the lead-time of the facility in 60%, and avoid the backorders situation that is present in the company, improving also the service level.

The diploma thesis is focused on proposal of workplace modification according to the lean manufacturing methodology (DMAIC). The target is to minimize the wasting and to increase the production efficiency based on LEAN tools implementation. The theoretical part of the thesis defines the basic terms, such as primarily lean production, DMAIC, wasting. In the practical part there is at problem analysis using the DMAIC method, then the proposal for improvement is solved, that contains reduction of wasting, process of the project, timetable, costs and implantation of the solution, finally there is evaluated the benefit.

La presente investigación realizada tiene como objetivo principal optimizar los tiempos de entrega de las reparaciones de vehículos ligeros en una empresa de alquiler de vehículos. Para ello, se aplicó la metodología del Lean Service, cuyas herramientas y métodos permitirán desplegar una propuesta de solución sólida, científica y aplicada a la problemática actual antes mencionada. En primer lugar, se realizó la revisión bibliográfica, citando fuentes y artículos científicos que sustenten y avalen la investigación. Luego, se realizó el análisis de la problemática actual y determinación de causas, para ello se aplicaron métodos y herramientas de la ingeniería industrial para la determinación de las causas raíz del problema, las cuales estaban ligadas a los métodos de la empresa. Como consecuencia de este análisis, se formula la hipótesis que la aplicación del Lean Service, a través de las herramientas 5S, Estandarización, TPM y Redistribución de planta, permitirá mitigar el impacto operativo y económico del problema principal, el cual es la demora en las entregas de las reparaciones de vehículos en el taller mecánico de la empresa. Dicha hipótesis es materia de estudio del siguiente capítulo, donde, en primer lugar, se sustenta que el Lean Service es la propuesta de mejora que mejor se ajusta a la descripción y la naturaleza de la presente investigación; para luego desplegar propiamente la metodología en sí. Dicho despliegue se realizó a través de la aplicación de las herramientas del Lean Service antes mencionadas, estructuradas bajo un diseño de propuesta basado en el ciclo de mejora continua PHVA (Planear, Hacer, Verificar y Actuar). Finalmente, para la comprobación y verificación del problema, se realizó una simulación de la propuesta a través de un software, donde se comprobó que efectivamente, luego de la aplicación de la propuesta, se lograría reducir los tiempos de entrega. Además, se realizó una evaluación económica de la propuesta para comprobar la viabilidad del proyecto, respaldando así la presente investigación. / The main objective of this research carried out is to optimize the delivery times of light vehicle repairs in a car rental company. For this, the Lean Service methodology was applied, whose tools and methods will allow to deploy a proposal for a solid, scientific solution applied to the current problems mentioned above. First, the bibliographic review was performed, citing scientific sources and articles that support and endorse the research. Then, the analysis of the current problems and determination of causes was carried out, for this, industrial engineering methods and tools were applied to determine the root causes of the problem, which were linked to the company's methods. As a consequence of this analysis, the hypothesis is formulated that the application of the Lean Service, through the 5S, Standardization, TPM and Layout Redistribution tools, will mitigate the operational and economic impact of the main problem, which is the delay in deliveries of vehicle repairs at the company's mechanical workshop. Said hypothesis is the subject of study in the next chapter, where, in the first place, it is maintained that the Lean Service is the proposal for improvement that best fits the description and nature of the present investigation; and then properly deploy the methodology itself. This deployment was carried out through the application of the Lean Service tools mentioned above, structured under a proposal design based on the PDCA cycle (Plan, Do, Check, Act). Finally, for the verification and verification of the problem, a simulation of the proposal was carried out through software, where it was verified that, effectively, after the application of the proposal, it would be possible to reduce delivery times. In addition, an economic evaluation of the proposal was carried out to verify the viability of the project, thus supporting the present investigation. / Trabajo de Suficiencia Profesional