INDUSTRY COMPONENT

Tie Layer

Tie layer is a bonding component in multi-layer co-extruded barrier films that ensures adhesion between incompatible polymer layers.

View Specifications

Component Specifications

Definition
A tie layer is a specialized adhesive polymer layer used in multi-layer co-extruded barrier film manufacturing to create strong interfacial bonding between dissimilar polymer layers that would otherwise exhibit poor adhesion. This component enables the combination of materials with different properties (such as barrier, mechanical, or thermal characteristics) into a single functional film structure.
Working Principle
The tie layer functions through molecular compatibility and chemical bonding mechanisms. It contains functional groups (such as maleic anhydride, glycidyl methacrylate, or other reactive moieties) that chemically interact with both adjacent polymer layers. During co-extrusion, the tie layer melts and flows between the primary layers, forming covalent bonds, hydrogen bonds, or strong van der Waals forces at both interfaces to create permanent adhesion.
Materials
Typically composed of modified polyolefins (maleic anhydride grafted polyethylene or polypropylene), ethylene vinyl acetate (EVA) copolymers, ionomers, or specialty adhesive polymers. Material selection depends on the specific polymers being bonded and required bond strength.
Technical Parameters
  • Density 0.89-0.96 g/cm³
  • Bond Strength >200 N/25mm
  • Melt Flow Index 1-10 g/10min
  • Thickness Range 2-20 microns
  • Processing Temperature 180-250°C
Standards
ISO 11357, ISO 527, ASTM D882, ASTM F88

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Tie Layer.

tie layer adhesive layer bonding layer multi-layer film co-extrusion barrier film polymer adhesion packaging film film lamination Tie Layer in Rubber and Plastic Product Manufacturing

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

Multi-Layer Barrier Vacuum Pouch Seal Strip

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

View Product Details

Engineering Analysis

Risks & Mitigation
  • Insufficient bond strength leading to delamination
  • Chemical migration in food contact applications
  • Thermal degradation during processing
  • Incompatibility with recycling streams
FMEA Triads
Trigger: Incorrect tie layer material selection
Failure: Poor interlayer adhesion and delamination
Mitigation: Conduct compatibility testing and select tie layers with appropriate functional groups for specific polymer combinations
Trigger: Inadequate processing temperature control
Failure: Incomplete melting or thermal degradation of tie layer
Mitigation: Implement precise temperature profiling and real-time monitoring during co-extrusion
Trigger: Contamination at layer interfaces
Failure: Reduced bond strength and film defects
Mitigation: Maintain clean processing environment and implement quality control checks for raw materials

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±5% thickness variation, bond strength >200 N/25mm minimum
Test Method
ASTM F88 for seal strength, ISO 11357 for thermal analysis, FDA 21 CFR for food contact compliance

Buyer Feedback

★★★★☆ 4.8 / 5.0 (15 reviews)

"The Tie Layer we sourced perfectly fits our Rubber and Plastic Product Manufacturing production line requirements."

"Found 59+ suppliers for Tie Layer on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this Tie Layer is very thorough, especially regarding technical reliability."

Related Components

Base Deck
Structural foundation component of modular plastic pallets providing load-bearing support and stability.
Interlocking Mechanism
Interlocking mechanism for modular plastic pallets enabling secure stacking and alignment.
Forklift Entry Rails
Structural rails designed to guide forklift entry into modular plastic pallets for safe and precise handling.
Anti-Slip Surface
Anti-slip surface for modular injection molded plastic pallets enhances load stability and workplace safety.

Frequently Asked Questions

What is the primary function of a tie layer in multi-layer films?

The tie layer provides adhesion between incompatible polymer layers that would otherwise separate, enabling the creation of multi-functional barrier films with combined properties.

How do you select the appropriate tie layer material?

Selection depends on the chemical compatibility with adjacent layers, required bond strength, processing conditions, and end-use requirements such as food contact compliance or environmental resistance.

Can tie layers affect the recyclability of multi-layer films?

Yes, some tie layers can complicate recycling by creating incompatible polymer mixtures. Recent developments focus on compatibilizing tie layers that improve recyclability while maintaining performance.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Get Quote for Tie Layer

Thermal Equalization Channels Tip