Loading...
Publication
Extrusão de poliolefinas: melhoria contínua do processo
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 4.73 MB | Adobe PDF |
Authors
Advisor(s)
Abstract(s)
Dada a importância económica e social da indústria de cabelagem para automóveis, a
busca contínua por melhorias nas diversas técnicas de processamento de polímeros, é
de primordial importância prática. Este trabalho, resultante da realização do estágio na
empresa Automotive Compounding Industry, evidencia um estudo realizado às
frequentes paragens ocorridas numa linha de extrusão de poliolefinas, designada por
linha B. Neste estágio procuram-se métodos e alternativas para promover um menor
tempo de set up e uma redução de desperdício frequente nessa linha. Ao longo deste
trabalho, são evidenciadas diferentes metodologias utilizadas pela empresa, sendo que,
a partir delas foi possível realizar um estudo sobre a linha B, de modo a avaliar, se a
linha funcionava nas melhores condições. Para além disso, estudaram-se diferentes
mudanças de materiais poliméricos, de formar a verificar os tempos entre o
aparecimento e desaparecimento da purga (causa de desperdício) e as suas
quantidades, assim como, o seu impacto no número de paragens. A partir deste estudo,
foi implementado na empresa, uma melhoria na linha do processo de extrusão, de
modo a promover uma relação de qualidade/custo no produto final otimizada.
Given the economic and social importance of the automotive hairdressing industry, the continuous search for improvements in the various polymer processing techniques is of paramount practical importance. This work, which is the result of an internship at the Automotive Compounding Industry company, shows a study carried out into the frequent stoppages that occur on a polyolefin extrusion line, known as line B. In this internship, methods and alternatives are sought to promote a shorter set-up time and a reduction in frequent waste on this line. Throughout this work, different methodologies used by the company are highlighted, and from them it was possible to carry out a study on line B, in order to assess whether the line was working under the best conditions. In addition, different changes of polymeric materials were studied in order to check the times between the appearance and disappearance of the purge (cause of waste) and their quantities, as well as their impact on the number of stops. Based on this study, the company implemented an improvement to the extrusion process line in order to promote an optimised quality/cost ratio in the final product.
Given the economic and social importance of the automotive hairdressing industry, the continuous search for improvements in the various polymer processing techniques is of paramount practical importance. This work, which is the result of an internship at the Automotive Compounding Industry company, shows a study carried out into the frequent stoppages that occur on a polyolefin extrusion line, known as line B. In this internship, methods and alternatives are sought to promote a shorter set-up time and a reduction in frequent waste on this line. Throughout this work, different methodologies used by the company are highlighted, and from them it was possible to carry out a study on line B, in order to assess whether the line was working under the best conditions. In addition, different changes of polymeric materials were studied in order to check the times between the appearance and disappearance of the purge (cause of waste) and their quantities, as well as their impact on the number of stops. Based on this study, the company implemented an improvement to the extrusion process line in order to promote an optimised quality/cost ratio in the final product.
Description
Keywords
Extrusão Melhoria Contínua Otimização Poliolefinas Processamento de Polímeros