China Supplier High Quality PET Strapping Band for Export Packaging

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PET Strapping Band: Specification and Advantages

1. Product Specification (Technical Data Sheet)

The specifications can vary by manufacturer and grade (e.g., standard, high-tenacity), but the following table provides a standard range:

Property / Specification Standard Value / Description Notes
Material Polyethylene Terephthalate (PET) A high-performance polyester polymer.
Tensile Strength 350 – 600 MPa (MegaPascals) Very high, can be 3-4x stronger than PP strapping.
Break Strength 300 – 600 kg (approx. 650 – 13,200 lbs) Depends on width and thickness (e.g., 12mm width can have ~900 kg break strength).
Elongation at Break 10% – 16% High elongation allows it to absorb shock and remain tight.
Tension Recovery (Elastic Memory) Very High Shrinks slightly when heat is applied, tightening the seal further.
Standard Widths 5mm, 6mm, 9mm, 12mm, 15mm, 19mm, 25mm 12mm and 15mm are among the most common for palletizing.
Standard Thickness 0.5mm – 1.2mm Thickness correlates directly with break strength.
Standard Coil Length 500m to 10,000+ meters Long coils reduce splices and downtime on automatic machines.
Density 1.33 – 1.38 g/cm³ Heavier than PP but stronger per unit volume.
Temperature Resistance -40°C to 190°C (-40°F to 374°F) Does not become brittle in cold weather like PP. Melts at high temperatures.
Moisture Absorption Very Low (<0.5%) Will not rot or weaken in humid environments.
UV Resistance Good to Excellent (often UV-stabilized) Suitable for medium-term outdoor storage.
Flammability Slow Burning, Self-Extinguishing Melts and retracts from flame.

Jointing Methods: PET strapping requires heat-based sealing for maximum strength.

  • Friction Weld: The most common method for non-metal seals. The tool uses friction to melt the strap ends and press them together.
  • Metal Seals (Clips): Can be used but is less common than with steel strapping. The grip is mechanical.

2. Key Advantages of PET Strapping

PET strapping is renowned for its combination of high performance and cost-effectiveness, positioning it as the premier choice between lightweight PP and heavy-duty steel strapping.

1. Exceptional Strength & Durability:

  • High Tensile Strength: PET has one of the highest tensile strengths among plastic strapping materials, making it ideal for securing heavy, rigid loads like metals, building materials, and palletized goods.
  • High Break Strength: It can withstand significant force without snapping, preventing product damage and load failure during transit.

2. Superior Elastic Memory & Recovery:

  • This is PET’s standout feature. Unlike PP or steel, PET has a unique ability to stretch under tension and then recover a portion of that stretch. This means:
    • It absorbs shocks and vibrations during shipping, keeping the load tight.
    • It resists loosening due to load shifting or temperature changes.
    • When sealed with heat (friction weld), the weld spot cools and contracts, further tightening the strap around the load.

3. Excellent Resistance Properties:

  • Weather & Moisture Resistance: It does not absorb water and is immune to rot, mildew, or rust, making it perfect for humid environments, cold storage, and international shipping.
  • Chemical Resistance: Resistant to most oils, greases, and solvents, protecting the strap’s integrity.
  • Temperature Resistance: Performs reliably in both extreme cold (won’t become brittle) and high heat (up to its melting point).

4. Safety and Handling:

  • Safer than Steel: No sharp edges, reducing the risk of injury to handlers (cuts, scratches). It is also lighter, reducing worker fatigue.
  • Non-Contaminating: It will not rust or stain products, which is critical for food-grade, pharmaceutical, and white goods (appliances) packaging.
  • Protects Product Surfaces: Softer than steel, it is less likely to damage fragile or sensitive product surfaces.

5. Economic and Operational Efficiency:

  • Cost-Effective Alternative: Offers up to 80% of the strength of steel strapping at a fraction of the weight and cost.
  • Lightweight: Reduces shipping weight compared to steel, saving on freight costs.
  • Tool Compatibility: Can be applied with a wide range of tools, from manual tensioners and sealers to high-speed automatic machines, improving packaging line efficiency.

6. Environmental Benefits (A Major Selling Point):

  • Recyclable: PET strapping is 100% recyclable along with PET bottles and other polyester products. This is a powerful marketing point for companies focusing on sustainable supply chains.
  • Reusable: In many applications, straps can be cut and reused multiple times.
  • Generates Less Waste: No metal seals are required for most applications, simplifying disposal and recycling.

Summary Table: PET vs. PP vs. Steel

Feature PET Strapping PP Strapping Steel Strapping
Strength High Low to Medium Very High
Elongation Recovery Excellent Poor (None) Poor (None)
Cost Medium Low High
Weight Medium Light Heavy
Safety Safe (No sharp edges) Safe Risky (Sharp edges)
Moisture Resistance Excellent Good Poor (Rusts)
Application Heavy-duty, rigid loads Light-duty, shifting loads Very heavy, sharp-edged loads

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