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Publicação
Influência de defeitos de fabrico na resistência ao impacto mecânico de uma embalagem de vidro
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A indústria vidreira opera num mercado global onde empresas de diferentes partes do mundo
competem pela mesma base de cliente, principalmente na indústria alimentar. Para se
manterem competitivas, as empresas precisam de otimizar os processos produtivos, e
garantir, acima de tudo elevados padrões de qualidade.
A presente dissertação surge após reclamações reincidentes de quebras na linha de
enchimento, de um frasco cujo cliente é um dos maiores da unidade da Marinha Grande da
empresa BA Glass e tem como finalidade identificar os principais fatores que influenciam a
diminuição da resistência ao impacto mecânico desse frasco. Para tal, foram estudadas ao
pormenor três etapas do processo produtivo passando pela fusão da matéria-prima, aplicação
de tratamentos de superfície e moldação.
No final da dissertação conclui-se que a espessura do revestimento dos punções e a
rugosidade da superfície do mesmo podem influenciar de forma negativa a resistência ao
impacto da embalagem de vidro em estudo.
The glass industry operates in a global market where companies from all around the world compete for the same type of clients, especially the ones on the food industry. To maintain their competitiveness, each company needs to continuously optimize their production processes and assure high levels of quality standards. The present project emerges after recurrent complaints due to breakages in the client’s filling lines, of one jar which is produced for one of Marinha Grande BA Glass plant’s biggest customers. The main goal of this thesis is to identify the main factors that may contribute to a decrease in the impact of resistance to that specific jar. For that, three stages of the production process were studied: raw materials fusion, coatings applications, and jar molding. At the end of the dissertation, it is concluded that the coating thickness of the plungers and their surface roughness may negatively influence the impact resistance of the glass packaging under study.
The glass industry operates in a global market where companies from all around the world compete for the same type of clients, especially the ones on the food industry. To maintain their competitiveness, each company needs to continuously optimize their production processes and assure high levels of quality standards. The present project emerges after recurrent complaints due to breakages in the client’s filling lines, of one jar which is produced for one of Marinha Grande BA Glass plant’s biggest customers. The main goal of this thesis is to identify the main factors that may contribute to a decrease in the impact of resistance to that specific jar. For that, three stages of the production process were studied: raw materials fusion, coatings applications, and jar molding. At the end of the dissertation, it is concluded that the coating thickness of the plungers and their surface roughness may negatively influence the impact resistance of the glass packaging under study.
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Palavras-chave
Indústria vidreira Resistência ao impacto Competitividade empresarial Controlo de qualidade