Coronavirus Disease 2019 can be transmitted from droplets or aerosol transmission that causes the vital of applying personal protective equipment (PPE) such as medical masks for medical or paramedic personnel. There are two technologies to make a medical mask, such as an ultrasonic sewing machine and a folding mask device. Through D-DART, The Disaster Management Center of Diponegoro University creates medical masks innovations with raw materials on the market, affordable. The research aims to design and build an ultrasonic sewing machine and a mask-folding device prototype. The invention is an experimental design that applies appropriate technology using inexpensive materials by locals and is easy to apply. The experiment results include the engine body and base, rollers, roller frames, and pneumatic knobs. The mask folding machine, currently, component designs have been carried out, including the frame, Roller for materials, Roller tensioner, Roller roller, Folding Jig, Sealer, Bearing housing, Bracket roller folding, Bracket roller tensioner, Bracket jig folding, and Measuring pads. All design processes can be executed and produce ultrasonic sewing machines and folding mask devices. There has been no research related to the quality of the mask created. A mask-making machine’s price is high and hard to come by at the beginning of the pandemic. Appropriate technology in the form of a surgical mask making machine is a solution to meet the needs of masks even though they do not yet have a surgical mask standard.

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