Single-side PVDC coated biaxially oriented polyester (BOPET) film is produced by applying a polyvinylidene chloride (PVDC) coating onto the corona-treated surface of a standard BOPET base film.
| Property | PVDC Coated BOPET | AlOx Coated BOPET | Metallized BOPET |
|---|---|---|---|
| Transparency | Transparent | Transparent | Opaque |
| Gas barrier (O₂) | Excellent | Excellent | Excellent |
| Moisture barrier | Excellent | Very good | Excellent |
| Aroma / oil barrier | Excellent | Good | Good |
| Microwave safe | No (PVDC may char) | Yes | No |
| Metal detectable | No | Yes | Yes |
| Printability | Good (coated side) | Good (with protective layer) | Requires surface treatment |
| Typical cost | Moderate | Higher | Lower |
| Parameter | Value |
|---|---|
| Base film thickness | 12–23 µm |
| PVDC coating weight | 2–5 g/m² (single side) |
| OTR (23°C, 0% RH) | ≤10–20 cc/m²·24h (varies by coating weight) |
| WVTR (38°C, 90% RH) | ≤5–10 g/m²·24h |
| Surface tension (coated side) | ≥38–42 mN/m (printable) |
| Transparency | >88% |
| Coefficient of friction | 0.3–0.6 (adjustable) |
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