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English
Views: 0 Author: Site Editor Publish Time: 2025-11-22 Origin: Site
PET (polyester) strapping and PP (polypropylene) strapping are the two most widely used plastic strapping materials in the packaging industry. They differ significantly in material properties, performance, and application scenarios. The following multi-dimensional comparison provides accurate selection references for users with different needs.
I. Core Characteristics and Material Differences
PET Strapping
Made from polyester resin as the core material through processes such as extrusion, stretching, and heat setting, it features a dense molecular structure and high crystallinity. It generally appears transparent or translucent, with an embossed surface option to enhance anti-slip performance. It has a rigid yet flexible texture and no obvious odor.
PP Strapping
Produced from polypropylene resin via extrusion and stretching, it has flexible molecular chains but lower crystallinity than PET. Available in a variety of colors (white, blue, green, etc.), it mostly has a smooth surface and a soft texture. Some low-quality products may have a slight plastic odor.
II. Comparison of Key Performance Parameters
| Performance Indicator | PET Strapping | PP Strapping | Core Difference |
|---|---|---|---|
| Tensile Strength | 1200-2400N (Grade M and above can reach 1800N+) | 600-1200N | PET has strength close to steel strapping, 1.5-2 times that of PP, suitable for heavy goods |
| Elongation at Break | 10%-15%, good elongation recovery | 15%-25%, prone to permanent deformation | PET remains tight after strapping, while PP tends to loosen during long-term use |
| Temperature Resistance | -50℃ to 80℃, stable performance at high and low temperatures | -20℃ to 60℃, easy to soften at high temperatures and become brittle at low temperatures | PET is suitable for outdoor and extreme environments, while PP is only for normal temperature scenarios |
| Corrosion Resistance | Excellent, resistant to acids, alkalis and rust, no contamination to goods | Good, resistant to common acids and alkalis, but prone to aging when in long-term contact with strong corrosives | PET is more suitable for corrosive environments such as chemical and metal industries |
| Impact Resistance | Strong, shock absorption capacity is 5 times that of steel strapping | Moderate, easy to break when impacted | PET is suitable for long-distance transportation and vibrating environments, while PP is only for short-distance light loads |
| Cost | Higher unit price, but lower cost per unit strength | Lower unit price, obvious overall cost advantage | PP is suitable for low-cost needs, while PET's cost-effectiveness is reflected in heavy-duty packaging |
III. Application Scenarios and Industry Adaptability
1. Application Scenarios for PET Strapping
Heavy Goods Packaging: Steel, aluminum ingots, stone, pipes and other goods over 50kg, achieving stable strapping with high strength.
Long-distance and Cross-border Transportation: Logistics and export goods that go through multiple handling links, ensuring safety with impact resistance and weather resistance.
Special Environment Operations: Chemical, outdoor construction materials and other scenarios with acid-alkali or extreme temperature-humidity conditions, adapting to needs with corrosion resistance and high-low temperature resistance.
High-demand Industries: Food and beverage (meeting food-grade standards), electronic appliances (no surface scratches), ceramics (breakage prevention), etc.
2. Application Scenarios for PP Strapping
Light Goods Packaging: Cartons, express parcels, clothing, home textiles and other goods under 30kg.
Short-distance Turnover: E-commerce warehousing, local logistics and other scenarios with few handling links, reducing immediate packaging costs.
Low-cost Demand Fields: Agricultural products (grain, cotton), light industrial products (toys, daily necessities) and other low-value-added goods.
Manual Strapping Scenarios: Small businesses and individual operators relying on manual tools for strapping, with flexibility facilitating operation.
IV. Key Factors for Selection Decision
Cargo Weight: Prioritize PP for ≤30kg, must choose PET for ≥50kg, and decide based on transportation distance for 30-50kg;
Transportation Environment: Choose PET for long-distance, outdoor and cross-border transportation, and PP for short-distance and normal temperature scenarios;
Cost Budget: Choose PP for low-budget light loads, and PET for heavy loads pursuing long-term cost-effectiveness;
Industry Requirements: Prioritize PET for special industries such as food, electronics and chemicals.
summary
PET strapping is known for its high strength and weather resistance, making it ideal for medium-to-heavy-duty and high-demand packaging scenarios. PP strapping, on the other hand, focuses on low cost and easy handling, suiting light-duty and short-distance basic packaging needs.
There is no absolute superiority between the two; the choice depends entirely on your specific requirements. If you need to secure heavy, high-value cargo, PET strapping is the safer and more reliable option. For general light packaging, PP strapping offers better cost-effectiveness
Suzhou Qingxing Packaging - The Source Factory of Strapping Bands. With 20 years of industry expertise, we are a high-quality supplier and service provider of PET and PP strapping bands. Welcome to inquire!
