<p>Some studies have reported the tertiary (3°) recycling of polyvinylidene fluoride (PVDF) with material extrusion (MEX) based 3D printing. As a melt flow index (MFI) based process, MEX has limitations concerning the amount of reinforcement in a polymer matrix. This study reports a novel 3D dispenser printing technique for 3° recycling of PVDF that may allow higher composition/ proportion of reinforcement for sensing applications. The dispenser printing-based PVDF functional prototypes were prepared by dissolving PVDF granules in dimethyl sulfoxide (DMSO), and the gel was 3D printed as a substrate of 48 × 50 × 2 (mm) for a microstrip patch antenna (MPA). The 3° recycling of PVDF involves a substantial difference between dispenser printing and MEX. The sensing capability of the PVDF substrate was explored using a ring resonator (RR) test, and its resonance frequency (R_f) was observed by using a Vector network analyzer (VNA). Further, its sensing capability in the industrial scientific and medical (ISM) band was explored using reverse transmission (S₂₁), reflection coefficient (S₁₁), and specific absorption ratio (SAR) values. The calculated values of S_21, S_11, and SAR for PVDF were -93.90493&#xa0;dB, -10.17671&#xa0;dB, and 1.175 W/kg, respectively. The results are supported by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), and differential scanning calorimeter (DSC).</p>