Research Article
Fabrication of a Flexible RFID Antenna by Using the Novel Environmentally Friendly Additive Process
Table 2
Comparison table of the process technique, subtraction process (traditional) and additive process, used in this work.
| | Process steps | This work | Other process | This work’ advantage |
| | Process characteristics | Additive process | Subtraction process using FCCL | (i) High material utilization |
| | Material | Flexible substrate | Flexible copper foil substrate | (i) Reduced chemical usage | | (ii) Low material cost |
| | Photoresist process | None | Have | (i) Reduce CO2 emission |
| | Wet process | Steps: | Three steps: | (i) Reduce >80% of consumed water and waste liquid | | (1) Screen printing | (1) Development | | (2) Copper displacement using additives | (2) Etching | | (3) Photoresist removal |
| | Chemical used in the wet process | CuSO4 and H2SO4 | Development, NaOH
Etching, CuCl2, HCI, NH4Cl
Photoresist removal, NaOH, inhibitor | (i) 80% less chemical used and effort for production, transportation, storage, waste treatment, and less pollutant |
| | Resistance value | 6∼12 × 10−8 Ωm | 1.7 × 10−8 Ωm | Sufficient conductivity for most applications |
|
|
