Table 5.
Final product specifications for a face mask.
| Functions | Requirements | Metric | Units | Limit values | Ideal values |
|---|---|---|---|---|---|
| F1 | Elasticity | Tensile strength at yield | MPa | >35.9 | 34 |
| Ease of usage | Ergonomic design | Yes/ No | Yes | Yes | |
| F2 | Respect DfAM principles | AM technologies | - | MEX, SLA, SLS | MEX |
| F3 | Comfortable | Wear period | hours | >6 | 8 |
| Maintains position | Ensures user protection | Yes/No | Yes | Yes | |
| Prevents condensation | Ensures ventilation features | Yes/No | Yes | Yes | |
| F4 | Single frame design | Number of components | No. | 3 | 2 |
| Allow reuse | Sterilization procedure | - | Autoclave, UV, disinfectant liquids, ozone | Disinfectant liquids, ozone | |
| F5 | Ease of maintenance | Maintenance manual | Yes/No | Yes | Yes |
| Ease of assembly | Assembly/disassembly time | minutes | 0.5 | 0.5 | |
| F6 | Biodegradable filaments | Thermoplastics | - | PLA | PLA |
| Environmental friendly | Recyclable | Yes/No | Yes | Yes | |
| F7 | Light weight | Total weight | g | <20 | 10 |
| F8 | AM produced | Total production time (3D printing+post processing+assembly) | minutes | <60 | 45 |
| F9 | AM produced | Production rate | products/day/machine | <10 | 8 |
| F10 | AM/plastic injection | Modular/parametric design | Yes/No | Yes/No | Yes |