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Manufacturing & Environmental Testing
Zhejiang Geruite Packaging Materials Co., Ltd. produces multi-layer barrier films and moisture-resistant sealing tapes on high-speed co-extrusion machinery. Material formulations incorporate hydrophobic resin additives that deliver low moisture permeability metrics.
Product batches are verified using specialized WVTR testing instruments under high-humidity climatic chamber conditions (38°C, 90% RH) to meet export packaging specifications.
Target Application Fields
- Ocean Freight & Container Shipping: Shields palleted cargo from moisture buildup inside long-haul freight containers.
- Outdoor Yard Storage: Covers raw materials and finished goods stored in open-air staging areas.
- Export Machinery Packaging: Forms sealed primary wraps over metal machinery to prevent rust formation during transit.
- Hygroscopic Chemical & Bulk Powder Bags: Seals multi-wall paper valve bags against ambient air moisture absorption.
Product Specifications
| Parameter | Test Standard | Technical Data Value |
|---|---|---|
| Water Vapor Transmission Rate (WVTR) | ASTM F1249 / GB/T 1037 | ≤ 2.5 g/(m²·24h) (Depending on film thickness) |
| Water Resistance Evaluation | Hydrostatic Head Test | Pass / Water Impermeable |
| Film Thickness Range | ASTM D3652 | 50 μm - 200 μm (0.05mm - 0.20mm) |
| Puncture Resistance | ASTM D5748 | ≥ 12 N - 35 N |
| Temperature Stability | N/A | -20°C to +75°C |
