REUTILIZAÇÃO DOS GALHOS DESCARTADOS NO PROCESSO DE INJEÇÃO DE PEÇAS PLÁSTICAS DE POLIPROPILENO

Abstract

This study is a project that aims to prove the economic viability of the reuse of Polypropylene (PP) injection branches, generated in the injection process of plastic parts. The injection branch or injection channel is a plastic waste that is currently discarded. Its origin is due to the need to conduct the raw material in its pasty state of the injector until the internal cavities of the injection tool to be completed. However, after the extraction of the pieces, the material that gets in this way is virgin raw material. After realizing that the weight of the branch in relation to the injected part can represent up to 20% of its total, we saw the possibility of reusing this material reducing the purchase of virgin raw material. Due to this situation we propose through the study, the implementation of the reuse process of the injection branches in order to define a reuse system, increasing the profitability of the company without affecting the quality of the final product. As a proof, we work defining a new process flow, defining how to properly treat the branches, the proportion of work in the maximum required condition of 20% of mix, the correct preparation of the raw material to be used and the certification of the changes according to the dimensional proof of the product tested and its aesthetic condition against the standards. Importantly, for the implementation of the project there will be no need for investment with new equipment, but only a change in the work system. Therefore, the study demonstrates the feasibility of reusing injection branches with significant cost reduction without investment and without affecting the final quality of the products.