Recycling of plastic waste in the 3D printing process with the potential for stem production, mobile part of the facial protector: Literature review

When the health system goes into crisis and the lack of personal protective equipment becomes a reality, it is recommended to cancel all procedures that are not urgent, to carry out the contingency in the use of personal protective equipment. Besides for this scenario, the use of masks beyond the expiration date designated by the manufacturer and their reuse are actions indicated by the National Health Surveillance Agency (ANVISA) in a Technical Note released on March 31, 2020. To minimize the contamination of the mask, the health professional should use a face shield: The rapid technical evolution of additive manufacturing (AM) allows a new path to a circular economy using recycling and distributed production. This article aims to examine the current advances in thermoplastic recycling processes using additive manufacturing Technologies. After proposing the production of the stem using recycled material for DRAM, a comprehensive and in-depth review of the literature on the feasibility and state of the art of reusing plastic waste in materials using the Scopus, web of Science, and Springer databases. The results suggest that few works have been carried out for the recovery and preparation stages, while a major advance has already been made for the other stages to validate the technical feasibility, environmental impact, and economic feasibility. The development of each proposed stage using the open-source approach is a relevant way to dimension the DRAM to reach the technical potential for producing the stem.