International Journal of Advanced Engineering Research and Science (IJAERS) ISSN: 2349-6495(P) | 2456-1908(O) Vol-8, Issue-2; Feb, 2021 Journal Home Page Available: https://ijaers.com/ Journal DOI: 10.22161/ijaers Article DOI: https://dx.doi.org/10.22161/ijaers.82.39 www.ijaers.com Page | 305 Application of Lean Manufacturing to Reduce Unproductive Times in a Valve Spring Inspection and Packaging Cell Cleginaldo Pereira de Carvalho, Luiz Edvaldo Leite Departmentof Industrial Engineering, UniversityoftheStateof São Paulo, Faculty of Engineering of Guaratinguetá, Avenida Dr. Ariberto Pereira da Cunha 333, Pedregulho, Guaratinguetá, São Paulo, Brazil, Zip Code:12.516-410, São Paulo, Brazil. Corresponding Author Email: cleginaldopcarvalho@hotmail.com Received: 27 Oct 2020; Received in revised form: 22 Jan 2021; Accepted: 19 Feb 2021; Available online: 27 Feb 2021 ©2021 The Author(s). Published by AI Publication. This is an open access article under the CC BY license (https://creativecommons.org/licenses/by/4.0/). Keywords—Continuous improvement, Lean manufacturing, Packing, Productivity increase, Quality. Abstract—Lean Manufacturing (LM) is a philosophy that allows companies to be elevated using their tools and contribute to the improvement of sectors. Therefore, it is necessary to adopt this system in order to continuously improve it, therefore, the general objective of this research was to analyze the feasibility of implementing the lean manufacturing tool in a valve spring inspection and packaging cell. To do this, specify the following specific objective, determine a method capable of increasing production capacity through LM, in order to increase competitiveness and profitability and evaluate the time results provided by LM. An action research was carried out to understand the benefits of applying this study in an inspection and packaging cell through the use of practical activities in company X. The results show that using tools such as the Ishikawa Diagram it is possible to use the cause root of the problems, thus allowing to develop actions to solve the problems. Thus, it was possible to verify that, when discovering the problems, it can increase by about 15% in area 1 and 9% in area 2. I. INTRODUCTION Globalization is a phenomenon that has occurred frequently in recent decades, with this, there has been a great expansion of the market, as well as the increase in the competitiveness of companies, which required the development of new tools and methodologies to improve production processes. In this scenario, it is worth highlighting the productive models, which have changed, that is, the high standardization and mass production gave rise to the production of smaller volumes and has its characteristics constantly adapted to follow the market oscillations and also the demands of consumers [1]. This was necessary because the number of companies that started to offer similar products increased, increasing the competition among them, culminating in the reduction of the prices of these materials. In this way, organizations began to modify their production flow, thus contributing to minimize waste while increasing productivity and reducing production costs [2].In this scenario, the LM emerges, which is a concept aimed at reducing waste and allowing the organization of the production management process. In addition, this philosophy aims to respond to market changes in a more flexible, fast and quality way. This increases organizational competitiveness and reduces existing waste in production activities [3]. It is worth mentioning that the increase in competitiveness among companies has made it necessary to employ systems in order to optimize production chains and an efficient way to do this is with the LM, which has been a methodology widely used in large companies due to the benefits it can bring. Therefore, this work is justified