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Two-color PP high barrier sheet

2025-10-15 14:47
PP/EVOH/PP Composite Sheet | Food-Grade High Barrier Thermoforming Material
Product Overview
Our PP/EVOH/PP Composite Sheet is a triple-layer structured solution engineered to redefine food packaging performance—combining the durability of polypropylene (PP) with the ultra-high oxygen/water vapor barrier of ethylene vinyl alcohol (EVOH). This sandwich-style composite (PP outer layers + EVOH core layer) creates a protective barrier that blocks oxygen, moisture, and odors, significantly extending the shelf life of perishable foods while maintaining food-grade safety and excellent thermoforming compatibility.
Ideal for high-demand food packaging scenarios (e.g., fresh meat, cooked meals, baked goods), the sheet balances rigidity, flexibility, and processability. It works seamlessly with vacuum forming, pressure forming, and high-speed thermoforming machines, producing consistent, high-quality packaging with minimal waste. Whether you need to prevent oxidation of red meat, retain moisture in bread, or block odor transfer in ready-to-eat meals, our PP/EVOH/PP sheet delivers reliable, compliant performance.
Key Features
1. Ultra-High Barrier Performance (EVOH Core Advantage)

  • Oxygen Barrier: Oxygen Transmission Rate (OTR) ≤ 0.1 cc/m²·day (at 23°C, 50% RH)—100x lower than single-layer PP sheets, preventing food oxidation, discoloration, and spoilage.

  • Moisture Barrier: Water Vapor Transmission Rate (WVTR) ≤ 3 g/m²·day (at 38°C, 90% RH), keeping foods like baked goods crisp and frozen items free from freezer burn.

  • Odor Resistance: EVOH core blocks odor permeation, ensuring no cross-contamination between flavored foods (e.g., spicy meals, cheese) and packaging.

2. Global Food Safety Compliance

  • Meets strict food-contact standards: FDA 21 CFR 177.1520 (PP) & 177.1330 (EVOH) (US), EU 10/2011 (EU), and GB 4806.7-2023 (PP) & 4806.11-2024 (EVOH) (China).

  • 100% BPA-free, phthalate-free, and non-toxic—no harmful substances migrate into food, even under refrigerated or frozen conditions.

  • Provides complete compliance documentation: Certificates of Analysis (CoA), Declaration of Conformity (DoC), and third-party test reports (SGS/TUV).

3. Excellent Thermoforming & Processing Efficiency

  • Layer Adhesion: Advanced co-extrusion technology ensures strong bonding between PP and EVOH layers—no delamination during thermoforming, trimming, or transportation.

  • Consistent Thickness: Total thickness tolerance ±0.03mm (layer ratio customizable: e.g., 30% PP / 40% EVOH / 30% PP), reducing production waste and ensuring uniform packaging.

  • Machine Compatibility: Works with automatic/manual thermoforming machines (cycle speed up to 30 cycles/min) and supports deep-draw forming for complex packaging shapes.

4. Broad Temperature Adaptability

  • Withstands extreme temperatures: -40°C (freezer-safe) to 120°C (hot-fill compatible)—suitable for frozen foods, microwaveable meals, and hot-fill beverages (e.g., soup, sauce).

  • No brittleness at low temps or warping at high temps, maintaining packaging integrity throughout the supply chain.

5. Customizable & Sustainable

  • Custom Options: Total thickness (0.3mm–2.0mm), width (300mm–1400mm), surface finishes (glossy/matte/anti-fog), and colors (transparent, white, custom RGB).

  • Recyclability: PP outer layers are fully recyclable (recycling code #5); EVOH can be separated via industrial recycling processes, aligning with eco-friendly packaging trends.

Two-color PP sheet

PP sheet


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