A kind of medical protective gear and its manufacturing method

Abstract

A medical protective gear, which uses polylactic acid powder obtained by a mechanical crushing method as the main raw material, and is prepared by a 3D printing process. For the prepared polylactic acid powder, it is preferable to add nano-silver antibacterial additive, which accounts for 0.01-5% of the polylactic acid powder by mass fraction, to the polylactic acid powder obtained by the mechanical crushing method. After slicing the 3D model of the medical protective gear designed by 3D software, import it into the main body of the laser selective sintering (SLS) molding equipment, lay the first layer of powder under preheating conditions, and use a laser power of 10-200W as planned. Path scanning sintering, followed by powder coating and sintering alternately, until the printing is completed. The solution of the present invention can be used for the manufacture of medical masks, goggles, protective clothing accessories, etc., and improves material safety and customizability as a whole, so as to rapidly develop safer and more efficient medical protective gear under the background of new coronavirus epidemic prevention and control Basis and conditions are provided.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a 3D printed medical protective gear based on powder raw materials and a laser selective sintering (SLS) process and a manufacturing method thereof. Background technique [0002] Medical protective gear mainly includes medical masks, goggles, protective clothing and its accessories, which provide good protection for front-line medical staff in terms of function. The existing medical masks and goggles are mostly standardized products, which are flexible in use but lack of individual matching. , after the user wears medical masks, goggles and other protective gear, there is a large area of ​​nudity and gaps on the face, which greatly increases the user's risk of being infected by bacteria, viruses, especially highly contagious viruses like the new coronavirus. However, simply pressing the protective gear against the face will cause indentations on the wearer's face, which will ...

AI Technical Summary

Problems solved by technology

[0002] Medical protective gear mainly includes medical masks, goggles, protective clothing and their accessories, which provide good protection for front-line medical staff in terms of function. Most of the existing medical masks and goggles are standardized products, which are flexible in use but lack of individual matching. After the user wears medical masks, goggles and other protective gear, there are large areas of exposure and gaps on the face, which greatly increases the risk of the user being infected by bacteria and viruses, especially highly contagious viruses like the new coronavirus. Simply relying on pressing the protective gear to the face will cause indentations on the wearer's face, and it will cause facial injuries after a long time