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Barrier Layer Component – Rubber and Plastic Product Manufacturing

Component Specifications

Definition

The barrier layer is a critical functional component in multi-layer co-extruded barrier films, engineered to provide selective permeability resistance against oxygen, water vapor, carbon dioxide, and volatile organic compounds. It maintains product shelf life, freshness, and integrity by creating a molecular barrier through specific polymer structures and additives.

Working Principle

Operates through molecular diffusion control, where the polymer matrix's crystalline structure, chain orientation, and additive chemistry create tortuous pathways that impede gas and vapor molecule movement. The barrier effectiveness is determined by factors like polymer density, polarity, and the presence of nanofillers or metallization.

Materials

Common materials include EVOH (ethylene vinyl alcohol), PVDC (polyvinylidene chloride), PA (polyamide/nylon), metallized PET or PP, aluminum foil laminates, and nanocomposite polymers. Thickness typically ranges from 2-20 microns depending on application requirements.

Technical Parameters

Density 0.9-1.4 g/cm³
Thickness Range 2-20 microns
Tensile Strength 20-100 MPa
Elongation at Break 50-500%
Oxygen Transmission Rate 0.1-5 cc/m²/day at 23°C, 0% RH
Water Vapor Transmission Rate 0.1-2 g/m²/day at 38°C, 90% RH

Standards

ISO 15105, ISO 2556, DIN 53380, ASTM D3985, ASTM F1249

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Barrier Layer.

Parent Products

This component is used in the following industrial products

Multi-Layer Co-Extruded Barrier Film

Plastic film with multiple layers for superior barrier properties.

View Product Details

Engineering Analysis

Risks & Mitigation

Delamination between layers
Barrier property degradation over time
Moisture sensitivity (especially for EVOH)
Thermal degradation during processing
Incompatibility with adjacent layers

FMEA Triads

Trigger: Poor layer adhesion during co-extrusion
Failure: Delamination and loss of barrier integrity
Mitigation: Optimize tie-layer composition and processing parameters; implement inline adhesion testing

Trigger: Moisture absorption in hygroscopic materials
Failure: Reduced barrier performance and physical property degradation
Mitigation: Proper material drying before processing; use desiccant packaging; consider moisture-resistant alternatives

Trigger: Thermal degradation during processing
Failure: Formation of pinholes and reduced mechanical properties
Mitigation: Optimize temperature profiles; use thermal stabilizers; implement real-time thermal monitoring

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

Thickness tolerance: ±5%; Barrier property tolerance: ±10% of specified values

Test Method

ISO 15105 for gas transmission rates; ISO 2556 for water vapor transmission; ASTM D882 for mechanical properties

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the most common material for high-barrier applications?

EVOH (ethylene vinyl alcohol) is most common for high oxygen barrier applications due to its excellent gas barrier properties, especially at low humidity conditions.

How does thickness affect barrier performance?

Barrier performance generally improves with thickness, but follows a logarithmic relationship. Beyond optimal thickness (typically 5-15 microns), additional thickness provides diminishing returns while increasing material costs.

Can barrier layers be recycled?

Recyclability depends on material composition. Monolayer barriers like EVOH are more recyclable than mixed-material barriers. Recent developments include recyclable barrier solutions using compatible polymer systems.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Barrier Layer