AddShield™ High-Barrier Compounds
Product Description
AddShield™ is a specially modified barrier compound engineered to block moisture and oxygen in flexible packaging. Incorporated during the melt phase of the extrusion process, it is designed for use in blown film, cast film, MDO PE, and lamination applications. When added at 10% in the core layer of a mono-material PE structure, it delivers up to 90% improvement in moisture vapor transmission rate (MVTR) and up to 50% improvement in oxygen barrier performance — extending shelf life and preserving freshness across food, pharmaceutical, and industrial packaging segments.
Technical Specifications
| Parameter | Details |
|---|---|
| Appearance | Solid Granules |
| Carrier | Polyethylene (CAS: 9002-88-4) |
| Additive | Proprietary |
| Melt Flow Index (190°C / 2.16 kg) | 6 g/10 min — ASTM D 1238 |
| Melting Point | 120°C |
| Specific Gravity / Density | 0.93 g/cm³ — ASTM D 792 |
| Moisture Content | <0.2% — ASTM D 6990 |
| OTR (cc/m².day) @ 23°C, 0% RH | 1000–1500 — ASTM D 3895 |
| WVTR (g/m².day) @ 38°C, 90% RH | 2–3 — ASTM F 1249 |
| Recommended Layer Thickness | 5–20 µm (application-dependent) |
| Recommended Dosage in Core Layer | 10% |
| Regulatory — Heavy Metals | Compliant with RoHS Directive 2011/65/EU |
| Regulatory — EU Food Contact | Commission Regulation (EU) No 10/2011 |
| Regulatory — FDA | FDA 21 CFR §175.105 (indirect food contact); select grades for direct contact |
Key Benefits
- ~90% improvement in moisture vapor transmission rate (MVTR) versus standard PE film
- ~50% improvement in oxygen transmission rate (OTR) versus standard PE film
- Improved film transparency and reduced haze when added in the core layer
- Increased heat resistance of the finished film
- Dead fold stable — suitable for wrapping and packaging applications
- High thermal stability with low migration during processing
- Excellent dispersion — processable on standard blown and cast extrusion lines without equipment modification
- Enables recyclable mono-material PE structures, supporting sustainability goals
- Customizable barrier levels to match specific application requirements
Applications
- Food and beverage packaging — shelf-life extension for high-value products
- Recyclable mono-material flexible packaging structures
- Pharmaceutical and medical packaging — moisture-sensitive products
- Personal care and cosmetics packaging
- Industrial and chemical packaging requiring barrier protection
