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O sector da indústria alimentar está em constante evolução e adaptação ao mundo, havendo
uma crescente necessidade de resposta à competitividade existente. O sucesso destas
indústrias passa pelo total conhecimento do sistema de produção utilizado, possibilitando
ajustes e melhorias que conduzem à diminuição de desperdícios, à otimização de processos e
ao aumento de qualidade dos produtos.
Foi na empresa Riberalves, S.A. que se desenvolveu o presente estudo. Procurou-se diminuir
a percentagem de rejeição de uma linha de embalamento de bacalhau em posta tradicional.
A percentagem de rejeição deve-se ao desajuste dimensional das postas relativamente
ao tamanho fixo das embalagens. Para minimização destes efeitos procedeu-se ao estudo das
alterações dimensionais do produto final nas diversas fases de processamento e de transformação,
nomeadamente no corte, demolha, vidragem e embalamento. Analisaram-se estatisticamente
os valores relativos aos pesos e dimensões das postas após cada fase do processo,
para encontrar padrões parametrizáveis suscetíveis de previsões futuras. As dimensões otimizadas
permitiram ajustar o corte aos parâmetros ajustados aos quais se submeteram as postas
de corte tradicional. Estas foram acompanhadas até ao embalamento, onde se procedeu a um
rigoroso controlo de qualidade. Em resultado foi possível reduzir a percentagem de rejeição
em 24,7%, o que foi considerado pela Empresa, como um valor muito satisfatório.
No decorrer deste estudo encontraram-se diferentes perspetivas, soluções, oportunidades
de melhoria e novas temáticas de investigação.
The food industry sector is constantly changing and adapting to the world, with a growing need to respond to existing competitiveness. The success of these industries depends on the full knowledge of the production system, enabling improvements, waste reduction, process optimization and better product quality. The present study was developed at Riberalves, S.A., a cod processing factory, that was trying to reduce rejections on a traditional post packaging line. The rejections result from the dimensional misfit of the fish pieces to the final package. To solve the problem, the product dimensions were monitored in during the transformation process: cutting, soaking, glazing and packaging. Weight and dimensions values were collected after each phase of the process for analysis and statistical treatment, finding parameter patterns that could help in future predictions. Subsequently, cut dimensions were tuned to the parameters found and the traditional slices from the new cuts were subjected to the usual process, thoroughly evaluating the packaging phase, where a 24.7% decrease in the original rejection rate was obtained. Trough the course of this study different perspectives, solutions, opportunities for improvement and new research topics were found.
The food industry sector is constantly changing and adapting to the world, with a growing need to respond to existing competitiveness. The success of these industries depends on the full knowledge of the production system, enabling improvements, waste reduction, process optimization and better product quality. The present study was developed at Riberalves, S.A., a cod processing factory, that was trying to reduce rejections on a traditional post packaging line. The rejections result from the dimensional misfit of the fish pieces to the final package. To solve the problem, the product dimensions were monitored in during the transformation process: cutting, soaking, glazing and packaging. Weight and dimensions values were collected after each phase of the process for analysis and statistical treatment, finding parameter patterns that could help in future predictions. Subsequently, cut dimensions were tuned to the parameters found and the traditional slices from the new cuts were subjected to the usual process, thoroughly evaluating the packaging phase, where a 24.7% decrease in the original rejection rate was obtained. Trough the course of this study different perspectives, solutions, opportunities for improvement and new research topics were found.
Descrição
Palavras-chave
Bacalhau Melhoria contínua Processamento industrial Controlo de Qualidade Desenvolvimento de Novo Produto
