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Replacement of mineral oil based grease by fiberglass textile with Teflon™ as demolding agent in the bonding process: an environmental evaluation

Carline Fabiane Stalter, Sciprofile linkCarlos Alberto Mendes Moraes, Sciprofile linkRegina Célia Espinosa Modolo
LALCA - Revista Latino-Americana em Avaliação do Ciclo de Vida , Volume 2, pp 62-84; doi:10.18225/lalca.v2i2.3019

Abstract: Cleaner Production (CP) includes actions to prevent, minimize and recycle waste. The present study deals with the use of CP concepts in the dubbing process in a company located in the region of Porto Alegre, RS, Brazil. The process was performed in a cubic chamber, and the material used was a polyurethane adhesive. Once the adhesive has been applied onto the substrate using a spray gun, mists are formed in this chamber, causing adhesive to generate deposits on the walls of the housing. This residual adhesive deposited on the walls was removed at regular intervals of time. In order to prevent the formation of deposits on the walls and facilitate their removal, in the conventional process the walls of the chamber were coated with mineral grease, thus generating a class I (hazardous) waste. The CP actions were implemented to rule out the need to use grease. This study aimed to find the best solution for this purpose. In this sense, a product that played the same role as the grease, which is a release agent, was investigated. For this purpose, a glass fiber was tested along with Teflon ™ fabric as a non-stick coating. As a result, it was found that the time to clean the chamber was reduced and the adhesive residue generated was free from grease contamination. However, in addition to the possibility of increased reuse of the waste, the application of CP in this process has made the environment safer for workers, since they are no longer exposed to grease. In addition, Class I (hazardous) waste previously generated has changed to classified as Class II (non-hazardous) waste. In addition to reducing the costs involved, the amortization of the investment took place at around 16 days. Keywords: Cleaner production. Bonding process. Grease. Fiberglass textile with Teflon™. Materials substitution. Raw material substitution.ResumoProdução Mais Limpa (P+L) inclui ações para prevenir, minimizar e reciclar resíduos. O presente estudo aborda o uso de conceitos P+L no processo de dublagem em uma empresa localizada na região de Porto Alegre, RS, Brasil. O processo foi realizado numa câmara cúbica, e o material usado foi um adesivo de poliuretano. Uma vez que o adesivo foi aplicado sobre o substrato usando uma pistola de pulverização, névoas são formadas nesta câmara, levando parte adesivo gerar depósitos nas paredes do compartimento. Este adesivo residual depositado nas paredes era removido em intervalos regulares de tempo. A fim de evitar a formação de depósitos nas paredes e facilitar a sua remoção, no processo convencional, as paredes da câmara eram revestidas com massa lubrificante de óleo mineral (graxa), gerando assim um resíduo classificado como classe I (perigoso). As ações de P+L foram implementadas para descartar a necessidade de uso de graxa. Este estudo teve como objetivo encontrar a melhor solução para esse fim. Neste sentido, foi investigado um produto que desempenhou o mesmo papel da graxa, ou seja, um agente de...
Keywords: Porto Alegre / Regulares / Classe Ii / Para Prevenir / como objetivo / objetivo encontrar / fiberglass textile

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