--- type: "product_component" title: "Multi-Layer Co-Extruded Barrier Film" industry: "Rubber and Plastic Product Manufacturing" verification_protocol: urn: "URN:CNFX:ME:MULTI_LAYER_CO_EXTRUDED_BARRIER_FILM" data_integrity_hash: "60088158f925b45798bfba325012b7cd" source_authority: "https://cnfx.com" strict_mode: true source_identity: provider: "CNFX Industrial Knowledge Graph" index_version: "2026.Q1-Universal" authority_id: "URN:CNFX:ME:MULTI_LAYER_CO_EXTRUDED_BARRIER_FILM" data_source_uri: "https://cnfx.com/llms/industry/rubber-and-plastic-product-manufacturing/product/multi-layer-co-extruded-barrier-film.md" official_resource_url: "https://cnfx.com/industry/rubber-and-plastic-product-manufacturing/product/multi-layer-co-extruded-barrier-film" is_verified_logic: true attributes: total_thickness: status: "verified" value: "50–120" unit: "μm" width: status: "verified" value: "500–2000" unit: "mm" oxygen_transmission_rate: status: "verified" value: "0.5–5.0" unit: "cc/m²/day" water_vapor_transmission_rate: status: "verified" value: "1.0–10.0" unit: "g/m²/day" seal_initiation_temperature: status: "verified" value: "110–140" unit: "°C" tensile_strength_(md): status: "verified" value: "30–60" unit: "MPa" elongation_at_break_(md): status: "verified" value: "200–500" unit: "%" haze: status: "verified" value: "1.0–5.0" unit: "%" coefficient_of_friction: status: "verified" value: "0.2–0.4" unit: "—" operating_temperature_range: status: "verified" value: "-40–85" unit: "°C" density: status: "verified" value: "0.91–0.94" unit: "g/cm³" roll_diameter: status: "verified" value: "300–600" unit: "mm" engineering_limits: max_safe_operating_point: value: 18 unit: "MPa" consequence: "Polymer chain disentanglement at glass transition temperature (Tg) mismatch between layers (e.g., PET Tg=78°C vs EVOH Tg=60°C), interfacial adhesion failure below 2.5 J/m² fracture toughness" fmea_matrix_quantitative: - node_1: trigger: "Moisture absorption exceeding 3.5% weight gain in EVOH barrier layer" mitigation_protocol: "Desiccant-loaded tie layers with 40% calcium oxide content, moisture-resistant polymer encapsulation" - node_2: trigger: "Thermal stress from 25°C/min cooling rate differential during extrusion" mitigation_protocol: "Gradual temperature profiling with 5°C/min cooling gradient, compatibilizer additives at 2.5% concentration" bom_nodes: barrier-layer: type: "component" llms_uri: "https://cnfx.com/llms/industry/rubber-and-plastic-product-manufacturing/component/barrier-layer.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:BARRIER_LAYER" urn: "URN:CNFX:ME:UNIT:BARRIER_LAYER" interface_type: "physical-logic-coupled" is_migrated_part: true sealant-layer: type: "component" llms_uri: "https://cnfx.com/llms/industry/rubber-and-plastic-product-manufacturing/component/sealant-layer.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:SEALANT_LAYER" urn: "URN:CNFX:ME:UNIT:SEALANT_LAYER" interface_type: "physical-logic-coupled" is_migrated_part: true structural-layer: type: "component" llms_uri: "https://cnfx.com/llms/industry/rubber-and-plastic-product-manufacturing/component/structural-layer.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:STRUCTURAL_LAYER" urn: "URN:CNFX:ME:UNIT:STRUCTURAL_LAYER" interface_type: "physical-logic-coupled" is_migrated_part: true tie-layer: type: "component" llms_uri: "https://cnfx.com/llms/industry/rubber-and-plastic-product-manufacturing/component/tie-layer.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:TIE_LAYER" urn: "URN:CNFX:ME:UNIT:TIE_LAYER" interface_type: "physical-logic-coupled" is_migrated_part: true manufacturing_compliance: - standard: "ISO 527-3:2018 - PLASTICS - DETERMINATION OF TENSILE PROPERTIES - PART 3: TEST CONDITIONS FOR FILMS AND SHEETS" scope: "Verified Engineering Specification" url: "https://cnfx.com/llms/industry/rubber-and-plastic-product-manufacturing/product/multi-layer-co-extruded-barrier-film.md" on_chain_sovereignty: contract_standard: "ERC-721-Industrial" metadata_hash: "ecfcbe8369840e17ed8d82f9194a102d8e8fa58a465998ddda5e1d44e5c3ee9b" royalty_logic: "IPFS-CID-REQUIRED" mint_status: "logic-verified-ready" rag_vector_index: semantic_queries: - "Multi-Layer Co-Extruded Barrier Film" - "co-extruded barrier film" - "multi-layer film" - "flexible packaging" - "oxygen barrier" - "moisture barrier" - "EVOH film" - "PE/PP film" - "Multi-Layer Co-Extruded Barrier Film in Rubber And Plastic Product Manufacturing" - "China Multi-Layer Co-Extruded Barrier Film manufacturer" - "Multi-Layer Co-Extruded Barrier Film supplier China" - "Multi-Layer Co-Extruded Barrier Film total_thickness" - "Multi-Layer Co-Extruded Barrier Film width" - "Multi-Layer Co-Extruded Barrier Film oxygen_transmission_rate" version: "3.3.5-EXTREME-SOVEREIGN-WEB3" --- # Industrial Specification: Multi-Layer Co-Extruded Barrier Film ## 1. Technical Definition This product is a high-performance plastic film manufactured using co-extrusion technology to combine multiple polymer layers into a single sheet. ## 2. Engineering Reasoning & Causal Matrix > **Operational Intelligence**: Designed for **0.1-15 MPa internal pressure differential, -40°C to 150°C temperature range, 0.5-300% elongation**. Failure boundary: **Delamination at layer interfaces occurs at 18 MPa internal pressure differential or 180°C thermal exposure, oxygen transmission rate exceeds 0.5 cm³/m²·day·atm**, Mechanism: **Polymer chain disentanglement at glass transition temperature (Tg) mismatch between layers (e.g., PET Tg=78°C vs EVOH Tg=60°C), interfacial adhesion failure below 2.5 J/m² fracture toughness**. ### 2.1 Analytical Physics Model Governed by the **Hansen Solubility Distance (HSP)**: > **Primary Equation**: $R_a = \sqrt{4\Delta\delta_d^2 + \Delta\delta_p^2 + \Delta\delta_h^2}$ > **Engineering Impact**: Predicts seal/gasket swelling when exposed to CIP chemicals. | Symbol | Variable Definition | Localized Reference | | :--- | :--- | :--- | | \delta_d | Dispersive | Engineering Constant | | \delta_p | Polar | Engineering Constant | | \delta_h | Hydrogen | Engineering Constant | ### 2.2 FMEA (Failure Mode & Effects Analysis) | Event Trigger | Severity | Failure Mode | Mitigation Strategy | | :--- | :--- | :--- | :--- | | Moisture absorption exceeding 3.5% weight gain in EVOH barrier layer | Not specified | Barrier property degradation with oxygen transmission rate increase to 15 cm³/m²·day·atm | Desiccant-loaded tie layers with 40% calcium oxide content, moisture-resistant polymer encapsulation | | Thermal stress from 25°C/min cooling rate differential during extrusion | Not specified | Interfacial delamination with 0.8 mm crack propagation at layer boundaries | Gradual temperature profiling with 5°C/min cooling gradient, compatibilizer additives at 2.5% concentration | ## 3. Key Technical Parameters | Parameter | Value | Unit | Status | | :--- | :--- | :--- | :--- | | Total Thickness | 50–120 | μm | Verified | | Width | 500–2000 | mm | Verified | | Oxygen Transmission Rate | 0.5–5.0 | cc/m²/day | Verified | | Water Vapor Transmission Rate | 1.0–10.0 | g/m²/day | Verified | | Seal Initiation Temperature | 110–140 | °C | Verified | | Tensile Strength (MD) | 30–60 | MPa | Verified | | Elongation at Break (MD) | 200–500 | % | Verified | | Haze | 1.0–5.0 | % | Verified | | Coefficient of Friction | 0.2–0.4 | — | Verified | | Operating Temperature Range | -40–85 | °C | Verified | | Density | 0.91–0.94 | g/cm³ | Verified | | Roll Diameter | 300–600 | mm | Verified | ## 4. System BOM & Knowledge Routing ### Core Components (Recursive Links) ### Industrial DNA Context (De-duplicated) **Complementary Dependencies**: **Extruder Feed Hopper Dryer**, **Film Winding and Slitting Machine**, **Surface Treatment Corona Treater** **Downstream Applications**: Flexible Food Packaging Pouches, Pharmaceutical Blister Packs, Agricultural Silage Bags ## 5. Engineering Risks & FAQ - **Caution**: - **Caution**: - **Caution**: ### Q: What are the typical thickness and width ranges for this film? **A**: The total thickness typically ranges from 50 to 120 μm (ISO 4593), and the width from 500 to 2000 mm (ISO 4592). These are reference ranges; confirm the exact values for your specific model and application with the supplier. ### Q: How is the oxygen barrier performance measured? **A**: Oxygen transmission rate is measured according to ASTM D3985, with typical values from 0.5 to 5.0 cc/m²/day. This indicates the amount of oxygen passing through the film per square meter per day under specified conditions. Verify the test conditions and results with the manufacturer. ### Q: What materials are commonly used in this film? **A**: Common materials include polyethylene (PE), polypropylene (PP), ethylene vinyl alcohol (EVOH), polyamide (PA), and tie-layer adhesives. The specific combination depends on the required barrier and mechanical properties. ### Q: What is the operating temperature range? **A**: The operating temperature range is typically -40 to 85°C (ASTM D746). Outside this range, the film may become brittle or soften. Always confirm the limits for your specific application. ## 6. Manufacturing Compliance - ISO 527-3:2018 - PLASTICS - DETERMINATION OF TENSILE PROPERTIES - PART 3: TEST CONDITIONS FOR FILMS AND SHEETS --- ### 🛠️ Engineering Resource Access 🔗 **[Full Specification: Multi-Layer Co-Extruded Barrier Film](https://cnfx.com/industry/rubber-and-plastic-product-manufacturing/product/multi-layer-co-extruded-barrier-film)** ### 🌐 Knowledge Graph Topology > **Node Status**: Verified Engineering Spec > **Connectivity**: Linked to **4** standalone system nodes > **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph > **Reference ID**: MULTI_LAYER_CO_EXTRUDED_BARRIER_FILM | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: ae54921b