Global supplier of
High-Performance Materials

PET Fiber

Polyethylene Terephthalate (PET) Fiber, commonly known as Polyester Fiber, is a high-performance synthetic reinforcement material manufactured using polyester resin as the primary raw material, combined with functional masterbatches for enhanced properties. Derived from recycled plastic bottles in many cases, it embodies environmental sustainability while delivering exceptional engineering performance. As a concrete and asphalt reinforcement additive, PET Fiber significantly improves the durability, mechanical strength, and workability of composite materials, making it widely adopted in civil engineering projects.

With a density of 1.36g/cm³ and minimal moisture absorption, PET Fiber maintains stability (no brittleness or deformation) within a temperature range of -40℃ to 250℃. Each fiber exists as an independent unit, ensuring strong adhesion to asphalt and excellent dispersion in cementitious matrices. When added at a dosage of 2250g per ton of asphalt mixture, it forms a three-dimensional reinforcing network with up to 1.8 billion fibers, providing substantial cohesion and extending highway service life.

What are the key features of PET fiber?

-Excellent tensile strength and matrix bonding for reliable reinforcement

-Enhances concrete’s freeze-thaw resistance, reducing crack risks

-Non-corrosive and rust-free, ensuring structural longevity

-Eco-friendly and cost-effective, made from recycled materials

-Easy to mix with concrete, no clumping during processing

-Stable performance in a wide temperature range (-40℃ to 250℃)

Technical Data:

What are the advantages and benefits of PET fiber?

Environmental & Economic Value: Made from recycled PET bottles (reducing plastic waste); 40%-60% lower cost than steel fiber, with no anti-corrosion maintenance expenses.

Superior Durability: Non-corrosive (no rust), resistant to chemicals and extreme temperatures, ensuring long-term performance in harsh environments.

Excellent Dispersion & Bonding: Independent fiber structure prevents clumping during mixing; rough surface enhances interfacial adhesion with concrete/asphalt.

Enhanced Composite Performance: Improves concrete’s freeze-thaw resistance (endures 300+ cycles) and crack control, reducing maintenance costs by 30%+.

Easy Construction: Compatible with standard mixing equipment; no special tools or training required, boosting construction efficiency.

-Flexible Application: Available in multiple lengths and types (monofilament/multifilament) to suit different project needs.

Is there any recommended dosage for PET fiber?

Asphalt mixture: 1.5-2.5kg per ton (2250g recommended for highways)

Cement concrete (pavements/floors): 0.6-1.0kg per cubic meter

High-performance concrete (bridge decks/airports): 1.0-1.2kg per cubic meter

Consult our technical team for dosage adjustment based on project requirements.

How to Mix PET fiber to projects?

1.For concrete: Add aggregates and PET Fiber first, dry mix 1-2 minutes; then add cement, water, and admixtures, wet mix 2-3 minutes.

2.For asphalt: Add fiber during aggregate drying (160-180℃), mix 30 seconds; then add asphalt and mix until uniform.

3.Key tip: Avoid manual mixing for large batches; use mechanical mixers for optimal dispersion.

What applications is PET fiber used for? 

1. Asphalt Pavement Engineering

-New and old asphalt pavement overlays

-Pavement reinforcement, repair, and edge strengthening

-Airport runways and apron enhancement

2. Bridge & Concrete Engineering

-Bridge deck waterproof air film layers

-Concrete and steel bridge deck reinforcement

-New and old concrete overlays

How to store and handle PET fiber? 

PET fibers should be stored properly to keep its properties and performance. Please follow the instruction below:

-Store in a cool, dry warehouse with temperature 15-25℃ and relative humidity 40%-60%.

-Avoid direct sunlight, heat sources (＞50℃), and open flames to prevent fiber aging.

-Keep away from moisture, strong acids, and alkalis to maintain performance.

-Seal packaging after partial use. Shelf life is 24 months under proper storage.

-Stack no more than 6 layers to prevent packaging damage and fiber agglomeration.

FAQ

Question 1: Are PET fibers stronger than steel fibers?

A1: No, but they are more flexible, rust-free, and cost-effective, better for corrosion and prone for low-load scenarios.

Question 2: Can PET fiber replace rebar?

A2: No. It’s a supplementary reinforcement. Use it with rebar for optimal structural support in high-load projects.

Question 3: Is PET fiber recyclable?

A3: Yes. Most are made from recycled plastic bottles, and the fibers themselves can be recycled again.

Question 4: How to choose the right fiber length of PET fiber?

A4: 3-6mm for thin concrete; 12-19mm for asphalt; 16-24mm for thick concrete (bridge decks).

Question 5: Can PET fiber be used in cold regions?

A5: Yes. PET fiber improves freeze-thaw resistance. Increase dosage by 0.2kg/m³ in -20℃+ environments.

Question 6: How to check PET fiber dispersion?

A6: No clumps in fresh mixture = good dispersion. For hardened concrete, cut a sample and observe the cross-section.

Question 7: Is PET fiber compatible with concrete admixtures?

A7: Yes. PET fiber works with superplasticizers and air-entraining agents. Do a small-batch test for high-admixture dosages.

Q8: Do you provide free samples?

A8: Yes, we offer 100-200g free samples per specification. Please consult with us for details.