PP Strapping vs. PET Strapping: A Side-by-Side Performance Comparison

The Material Selection Dilemma

In packaging operations, the choice between PP strapping (polypropylene strapping) and PET strapping often comes down to a simple question: what is the load, and where is it going? Both materials are widely used in industrial packaging, but they are engineered for different performance profiles. Selecting the wrong one can lead to load failure, product damage, or unnecessary material costs.

PP strapping is the standard choice for light to medium-duty packaging, offering flexibility, shock absorption, and cost efficiency. PET strapping is the preferred material for heavy loads, long-distance transit, and outdoor storage, delivering tensile strength approaching steel.

At Jushuo Packaging, our production data shows that material selection is one of the most consequential decisions buyers make. This side-by-side comparison examines both materials across key performance criteria to help you select the right strapping for your application.

1. Tensile Strength and Load Capacity

1.1 PP Strapping

PP strapping achieves tensile strength of 100–150 MPa, with break forces ranging from 45kg to 230kg depending on width and thickness. It is designed for light to medium-duty applications where loads are stable and do not exceed 300kg.

1.2 PET Strapping

PET strapping achieves tensile strength of 450–600 N/mm², with break forces ranging from 160kg to 1,360kg. It approaches steel's performance and is suitable for heavy-duty applications including steel coils, cotton bales, and brick pallets.

1.3 Comparison

2. Elongation and Tension Retention

2.1 PP Strapping

PP strapping has higher elongation (typically 12–20%) and excellent elastic recovery. It absorbs shock well and conforms to compressible loads. However, it may relax under sustained load, losing tension over time.

2.2 PET Strapping

PET strapping has lower elongation (10–18%) and superior tension retention. It maintains constant compression as loads settle, making it ideal for long-distance shipments and compressible goods.

2.3 Comparison

3. Environmental Resistance

3.1 PP Strapping

PP strapping has limited UV resistance and can degrade after 3–6 months of outdoor exposure. It is best suited for indoor, temperature-controlled environments. Its moisture absorption is minimal (<0.01%), so humidity is not a major concern.

3.2 PET Strapping

PET strapping offers excellent UV resistance and maintains performance across a wide temperature range (-40°C to +80°C). It is suitable for outdoor storage and ocean transit.

3.3 Comparison

4. Cost and Total Ownership

4.1 PP Strapping

PP strapping has a lower unit material cost, making it the most economical choice for high-volume, light-duty operations. However, replacement frequency may be higher for demanding applications.

4.2 PET Strapping

PET strapping has a higher unit cost than PP but lower than steel. It offers better long-term value for heavy loads due to reduced replacement and damage claims.

4.3 Comparison

5. Application Suitability

5.1 When to Choose PP Strapping

Choose PP strapping when:

• Loads are light to medium weight (under 300kg)

• Packaging is for indoor, controlled environments

• Cost is the primary driver

• Shock absorption is important

• Products are stable and do not settle

Typical PP strapping applications:

• Carton closure and reinforcement

• E-commerce fulfillment

• Light pallet loads

• Agricultural packaging (hay bales, crop bundles)

5.2 When to Choose PET Strapping

Choose PET strapping when:

• Loads are heavy or rigid (over 300kg)

• Products require outdoor storage

• Shipments travel long distances

• Tension retention is critical

• Steel replacement is needed

Typical PET strapping applications:

• Steel coil bundling

• Cotton bale packaging

• Brick and masonry bundling

• Lumber and timber securing

• Heavy-duty export shipments

Summary

The choice between PP strapping and PET strapping depends on load requirements, environmental conditions, and cost priorities. PP strapping offers flexibility, shock absorption, and cost-effectiveness for light to medium loads in indoor environments. PET strapping delivers high tensile strength, superior tension retention, and weather resistance for heavy-duty and outdoor applications.

For light loads, PP strapping is the most economical and practical solution. For heavy loads, long-distance shipments, and outdoor storage, PET strapping provides better performance and long-term value.

Jushuo Packaging stands as your trusted polypropylene PP strapping manufacturer, delivering superior quality plastic strapping solutions backed by over a decade of specialized expertise. Our state-of-the-art 15,000㎡ manufacturing facility utilizes advanced Italian screen changers and precision cold-drawing technology to produce high-performance PP strapping with 99% pass rates. With annual production capacity exceeding 20,000 tons, we ensure reliable supply chains and competitive pricing for bulk orders. If you need assistance selecting between PP and PET strapping for your application, please send an email to sales@jushuopackaging.com, and our professional team will provide one-on-one support.

References

1. ASTM International. "ASTM D3950-23 – Standard Specification for Strapping, Nonmetallic (and Joining Methods)." ASTM.org, 2023.

2. European Committee for Standardization. "EN 13394:2001 – Packaging – Strapping – Specifications for Polypropylene Strapping." CEN.eu, 2001.

3. Signode Industrial Group. "PET vs PP: Which Strap to Use?" Signode.com, 2025.

4. PAC Strapping Products. "High-Performance Polyester Strapping." Plant Engineering, 2024.