Ultra/High - Barrier Films
Blister Foils / Lidding Foils
Cold Form Blister Foils
Extrusion Laminates
- +91 93197 23685
- info@wahren.in
- Plot No. 57, Sector-155, Noida, Uttar Pradesh – 201301
Wahren PVC/PVDC
High-Barrier Solutions for Advanced Pharmaceutical Packaging.
Wahren PVDC-coated films deliver enhanced barrier performance for moisture and oxygen sensitive solid dosage forms.
These films are produced by coating Polyvinylidene Chloride (PVDC) onto PVC forming a multi-layer structure where PVC provides excellent thermoformability and PVDC delivers high-barrier protection.
Material Science & Barrier Technology
PVDC is widely recognized for its dense molecular structure and extremely low permeability, making it one of the most effective barrier polymers used in pharmaceutical packaging and significantly reduce:
- Moisture Vapour Transmission Rate (MVTR)
- Oxygen Transmission Rate (OTR)
Compared to standard PVC films, PVDC-coated structures offer substantially improved protection against moisture and oxygen ingress, enabling enhanced product stability and shelf life.
Performance Advantages
Wahren PVDC films are designed to balance protection, processability, and cost-efficiency, making them ideal for high-speed pharmaceutical packaging environments:
- Superior Barrier Protection
Effectively minimizes moisture, oxygen, and gas ingress—critical for hygroscopic and sensitive formulations - Extended Shelf-Life Stability
Maintains drug efficacy by preventing oxidation, hydrolysis, and photodegradation - Excellent Thermoformability
PVC base ensures consistent cavity formation, while PVDC maintains barrier integrity during forming - High Clarity & Aesthetic Quality
Enables visual inspection of dosage forms without compromising barrier performance - Reliable Sealing Performance
Compatible with standard lidding foils, ensuring hermetic sealing - Chemical Resistance & Compatibility
Inert behavior minimizes interaction between packaging material and drug formulation
Customizable Barrier Structures
- Duplex Structures (PVC/PVDC)
Optimized for medium barrier applications - Triplex Structures (PVC/PE/PVDC)
Designed for deeper draw cavity forming and enhanced barrier performance
Barrier levels can be precisely tailored by adjusting PVDC coating weight (gsm), allowing flexibility across a wide range of pharmaceutical applications.
Applications
- Blister Packaging for Tablets & Capsules, Soft gels.
- Moisture-sensitive and oxygen-sensitive formulations.
- Nutraceutical and Healthcare product packaging.
Salient Features
- Wahren Duplex™ offers excellent thermoforming performance on both rotary and flat-bed blister packaging machines.
- Provides the required barrier protection against moisture and gases.
- Ensures superior strength and dimensional stability.
- Non-toxic and safe for pharmaceutical use.
- Fully complies with international standards for global migration and RVCM content.
Technical Specification
| Sr. No. | Test Parameters | Unit | Standard Specification |
|---|---|---|---|
| 1 | PVC Base Film Thickness | Micron | 0.25 – 0.35 |
| 2 | PVDC Coating Weight | g/m² | 30 – 120 |
| 3 | Total Film Thickness | Micron | As per structure |
| 4 | Water Vapour Transmission Rate (WVTR) | g/m²/day | Low |
| 5 | Oxygen Transmission Rate (OTR) | cc/m²/day | Low |
| 6 | Tensile Strength | kg/cm² | ≥ 450 |
| 7 | Elongation at Break | % | ≥ 30 |
| 8 | Dimensional Stability (Longitudinal) | % | -5 Maximum |
| 9 | Dimensional Stability (Transverse) | % | +2 Maximum |
| 10 | Adhesion Test (Scotch Tape Test) | — | Should Pass |
| 11 | Heat Seal Strength | kg/cm | ≥ 0.3 |
| 12 | Reel Width | mm | As per customer requirement |
| 13 | Core ID | mm | 76 ± 1 mm |
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