INDUSTRY COMPONENT

Barrier Core Layer

Multi-layer barrier vacuum pouch seal strip core layer providing oxygen and moisture protection

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Component Specifications

Definition
The Barrier Core Layer is a critical component within multi-layer barrier vacuum pouch seal strips, engineered to create an impermeable barrier against oxygen, moisture, and other environmental contaminants. This layer is typically composed of specialized polymers or metalized films that prevent gas transmission, thereby extending the shelf life of packaged products by maintaining vacuum integrity and preventing spoilage.
Working Principle
Operates on the principle of molecular barrier technology, where the dense polymer matrix or metalized coating creates a physical obstruction to gas molecules (primarily O2 and H2O). During the sealing process, this layer fuses with adjacent layers under heat and pressure, forming a continuous barrier that maintains vacuum conditions by preventing atmospheric gas ingress through diffusion.
Materials
EVOH (Ethylene Vinyl Alcohol) copolymer, PA (Polyamide/Nylon), metallized PET (Polyethylene Terephthalate), aluminum foil composites, or high-barrier PVdC (Polyvinylidene Chloride) coatings. Thickness typically ranges from 15-50 microns depending on barrier requirements.
Technical Parameters
  • Tensile Strength ≥40 MPa
  • Thickness Tolerance ±2 microns
  • Width Compatibility 10-100 mm standard
  • Oxygen Transmission Rate <0.5 cc/m²/day at 23°C, 0% RH
  • Heat Seal Temperature Range 140-180°C
  • Water Vapor Transmission Rate <0.5 g/m²/day at 38°C, 90% RH
Standards
ISO 15105-2, ISO 2556, DIN 53380, ASTM F1249

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Barrier Core Layer.

barrier core layer vacuum pouch seal strip oxygen barrier moisture protection packaging component EVOH layer metallized film FMEA analysis industrial packaging Barrier Core Layer in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Multi-Layer Barrier Vacuum Pouch Seal Strip

Heat-sealable strip for creating hermetic seals on vacuum pouches for meat packaging.

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Engineering Analysis

Risks & Mitigation
  • Delamination from adjacent layers
  • Pinhole defects compromising barrier integrity
  • Thermal degradation during sealing
  • Inconsistent thickness causing seal failures
FMEA Triads
Trigger: Inadequate heat control during sealing
Failure: Thermal degradation of barrier polymers
Mitigation: Implement precise temperature monitoring and closed-loop control systems
Trigger: Contamination during manufacturing
Failure: Pinhole formation in barrier layer
Mitigation: Install cleanroom conditions and automated inspection systems
Trigger: Material incompatibility with adjacent layers
Failure: Delamination under vacuum stress
Mitigation: Conduct compatibility testing and use appropriate adhesive/tie layers

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Thickness: ±2%, Width: ±0.5 mm, Barrier properties: Must meet specified OTR/WVTR values within 10%
Test Method
ISO 15105-2 for gas transmission, ISO 2556 for water vapor transmission, ASTM F88 for seal strength testing

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 primary function of the Barrier Core Layer?

To prevent oxygen and moisture transmission through vacuum pouch seals, maintaining product freshness and extending shelf life.

Which materials offer the best barrier properties?

EVOH provides excellent oxygen barrier, while metallized PET or aluminum foil composites offer superior moisture and gas barrier performance.

How does thickness affect barrier performance?

Thicker layers generally provide better barrier properties but increase material cost and may affect sealing characteristics; optimal thickness balances performance with processing requirements.

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.

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