PP Strap Vs PET Strap: A Comparison in Packaging And Transportation

The Material Selection Decision

Packaging professionals frequently face a fundamental question: should I choose PP strap or PET strap? Both materials are widely used in industrial packaging, but they serve different applications. Selecting the wrong material can lead to load failure, product damage, or unnecessary costs. According to industry analysis, PET strap offers tensile strength up to 600 N/mm² compared to PP strap’s 100–150 MPa range, making PET the choice for heavy loads while PP excels in light to medium-duty applications where flexibility and cost matter most.

At Jushuo Packaging, our production data and customer applications show that material selection is one of the most common specification decisions buyers face. Understanding the differences between PP and PET strap helps procurement professionals make informed decisions that balance performance, cost, and application requirements.

1. Material Properties Comparison

1.1 Tensile Strength

Tensile strength is the most fundamental difference between PP and PET strap:

According to Signode, PET strap offers high tensile strength comparable to steel strap for heavier duty applications . PAC Strapping Products notes that PET strap combines the strength of steel strapping with the safety and economy of plastic, resulting in more secure loads at lower cost.

1.2 Elongation and Tension Retention

According to YS Strapping, PP strap is more elastic and can absorb shock, but it can lose tension over time, making it less suitable for long-term storage or long-distance shipping . PET strap offers superior tension retention and minimal elongation, making it excellent for export shipments or goods stored for extended periods.

1.3 Environmental Resistance

According to Signode, PET resists UV, moisture, and large temperature fluctuations, making it ideal for loads stored outside or in harsh conditions . PP strap may degrade under UV exposure and high temperature, making it best for indoor or short-term use.

2. Cost Comparison

2.1 Material Cost

According to packaging economics analysis, PP strapping is budget-friendly, perfect for companies packaging lightweight goods in large quantities. PET strapping has a higher upfront cost, but requires less re-strapping and fewer replacements, offering better long-term value for heavy or industrial loads. PET strap can cut transportation costs by 30–40% compared to steel alternatives.

2.2 Total Cost of Ownership Analysis

According to industry analysis, even though the unit price of PET strapping is higher, the total cost is often lower because less handling labor is needed, safety equipment is not required, and equipment maintenance costs are reduced.

3. Application Suitability

3.1 When to Choose PP Strap

Choose PP strap when:

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

• Packaging is for indoor, temperature-controlled environments

• Cost is the primary driver

• Products are unitized and do not expand or shift during transit

• Flexibility and shock absorption are important

Typical PP strap applications:

• Carton closure and reinforcement

• E-commerce fulfillment packaging

• Light to medium pallet loads

• Bundling printed materials and light products

• Agricultural packaging (hay bales, crop bundles)

3.2 When to Choose PET Strap

Choose PET strap when:

• Loads are heavy or rigid (over 300kg)

• Products will be stored outside or in harsh conditions

• Shipments travel long distances requiring tension retention

• You need to replace steel strapping

• Rust-free performance is critical

Typical PET strap applications:

• Steel coil bundling

• Cotton bale packaging (JCIBPC compliant)

• Brick and masonry bundling

• Lumber and timber securing

• Heavy-duty export shipments

3.3 Industry-Specific Guidance

4. Key Differences Summary

5. Making the Right Choice

5.1 Decision Factors

When choosing between PP and PET strap, consider:

• Load weight: Under 300kg → PP; Over 300kg → PET

• Storage conditions: Indoor/short-term → PP; Outdoor/long-term → PET

• Shipping distance: Short/domestic → PP; Long/export → PET

• Budget priorities: Cost-sensitive → PP; Performance-critical → PET

• Equipment compatibility: Both work with standard equipment

5.2 Sample Testing

According to quality standards, sample testing is recommended before full-scale production. Test:

• Feed performance in your equipment

• Tension and seal reliability

• Load security under expected conditions

Jushuo Packaging provides samples for in-house testing to verify compatibility and performance before full-scale production.

Summary

Choosing between PP strap and PET strap depends on application requirements, load weight, and operating conditions. PP strap offers flexibility, cost-effectiveness, and ease of handling for light to medium loads in indoor, short-term applications. PET strap delivers steel-like strength, superior tension retention, and UV resistance for heavy loads, outdoor storage, and long-distance shipping .

The key decision factors are load weight (under 300kg for PP, over 300kg for PET), storage conditions (indoor/short-term for PP, outdoor/long-term for PET), and shipping requirements (domestic for PP, export for PET). For most light to medium applications, PP strap provides the most cost-effective solution. For heavy, demanding applications, PET strap offers superior performance and total value.

Jushuo Packaging offers both PP and PET strapping solutions with customizable specifications, documented quality assurance, and supply chain reliability. Our manufacturing capabilities—5 PP production lines and 4 PET production lines with 20,000 tons annual capacity—ensure consistent performance across all specified dimensions. We support clients through material selection, sample testing, and application optimization.

If you need assistance choosing between PP and PET strap for your application, please send an email to sales@jushuopackaging.com, and our professional team will provide one-on-one support.

References

1. Signode Industrial Group. “PET vs PP: Which Strap to Use?” Signode.com, 2025.

2. YS Strapping. “PP vs PET Strapping: What’s the Difference?” ysstrapping.com, 2024.

3. PAC Strapping Products. “High-Performance Polyester Strapping.” Plant Engineering, 2024.

4. ASTM International. “ASTM D3950 – Standard Specification for Strapping, Flat Steel and Seals.” ASTM.org, 2021.

5. European Committee for Standardization. “EN 13394:2001 – Packaging – Strapping – Specifications for Polyester Strapping.” CEN.eu, 2001.