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Home / Products / Polyester Staple Fiber / High strength and low stretch fiber Used for yarn making, various industrial filtration, engineering mixing, etc.
Quality High strength and low stretch fiber Used for yarn making, various industrial filtration, engineering mixing, etc. factory
Quality High strength and low stretch fiber Used for yarn making, various industrial filtration, engineering mixing, etc. factory
Quality High strength and low stretch fiber Used for yarn making, various industrial filtration, engineering mixing, etc. factory
Quality High strength and low stretch fiber Used for yarn making, various industrial filtration, engineering mixing, etc. factory
Quality High strength and low stretch fiber Used for yarn making, various industrial filtration, engineering mixing, etc. factory
Quality High strength and low stretch fiber Used for yarn making, various industrial filtration, engineering mixing, etc. factory
Quality High strength and low stretch fiber Used for yarn making, various industrial filtration, engineering mixing, etc. factory
Quality High strength and low stretch fiber Used for yarn making, various industrial filtration, engineering mixing, etc. factory

High strength and low stretch fiber Used for yarn making, various industrial filtration, engineering mixing, etc.

Product Summary
2.5D×51MM High Tenacity Low Elongation Polyester Staple Fiber High strength and low stretch fiber used for yarn making, various industrial filtration, engineering mixing, and more. Product Overview Our 2.5D×51MM high tenacity low elongation polyester staple fiber is a high-performance industrial...
Basic Properties
Place of Origin: China
Brand Name: Octopus fiber
Certification: 935522
Model Number: 2.5*51MM
Trading Properties
Minimum Order Quantity: Starting from 1 ton
Price: Free samples sent
Payment Terms: D/A,D/P,T/T
Supply Ability: Customized according to the quantity required by your company
Tags:

Polyester Staple Fibers

Staple Polyester Fibre

Polyester Short Cut Fiber
Product Description
2.5D×51MM High Tenacity Low Elongation Polyester Staple Fiber

High strength and low stretch fiber used for yarn making, various industrial filtration, engineering mixing, and more.

Product Overview

Our 2.5D×51MM high tenacity low elongation polyester staple fiber is a high-performance industrial-grade fiber specially developed for scenarios with high requirements for mechanical strength, dimensional stability and durability.

Adopting high-viscosity virgin PET as raw material, through precision spinning, multi-stage drafting and heat setting process, it achieves the excellent combination of high strength, low elongation, low shrinkage and wear resistance. Widely used in industrial sewing thread, geotextile, filter material, webbing and other fields.

Technical Performance

Different from ordinary polyester staple fiber which has medium strength and high elongation, this HTLE fiber greatly improves molecular orientation and crystallinity. The breaking tenacity reaches above 4.8 cN/dtex, which is 30-40% higher than ordinary products, while elongation at break is only about 18%.

In terms of dimensional stability, the fiber undergoes sufficient heat setting treatment, with extremely low dry heat shrinkage. It maintains stable structural performance under long-term stress and high-temperature processing conditions.

Wide Application Scenarios
  • Industrial Sewing Thread: High-strength sewing thread for leather, luggage, shoes, industrial sewing, automotive interior sewing
  • Geotechnical Engineering: Reinforced geotextile, geomembrane, roadbed reinforcement fabric, embankment protection cloth, foundation isolation layer
  • Industrial Filtration: High-temperature filter felt, dust removal filter bag, liquid filter material, chemical filter medium, industrial filter cloth
  • Webbing & Rope: Safety belt, hoisting belt, conveyor belt core, industrial webbing, high-strength rope, binding tape
  • Rubber Reinforcement: Tire cord fabric, rubber hose skeleton layer, conveyor belt skeleton material, rubber product reinforcement fiber
  • Industrial Fabric: Canvas, tarpaulin, architectural membrane material, papermaking felt, industrial base cloth, protective clothing fabric
Product Images
High tenacity low elongation polyester staple fiber sample Polyester fiber manufacturing process Fiber quality inspection Industrial applications of polyester fiber
Product Specifications
Item Detailed Parameter
Product Name 2.5D×51MM High Tenacity Low Elongation (HTLE) Polyester Staple Fiber
Standard Spec 2.5D Fine Denier, 51mm Standard Fixed Cut Length
Raw Material 100% High-viscosity Virgin PET Chips, No Recycled Impurities
Breaking Tenacity ≥4.8 cN/dtex, 30-40% higher than ordinary polyester staple fiber
Elongation at Break 18% ± 3%, ultra-low elongation for excellent dimensional stability
Dry Heat Shrinkage ≤2.0% at 180°C for 15min, low shrinkage under high temperature
Initial Modulus High modulus, good stiffness and shape retention under stress
Crimp Number 10-12 crimps / 25mm, moderate crimp for good spinnability & cohesion
Oil Content 0.10%-0.18%, uniform antistatic oiling for smooth spinning processing
Wear Resistance Excellent abrasion resistance, 2× longer service life than ordinary PSF
Chemical Resistance Good resistance to acid, alkali and most chemical solvents
Heat Aging Resistance Stable performance under long-term high temperature environment
Compatible Process Ring spinning, rotor spinning, needle punching, woven & knitted fabric
Main Application Industrial sewing thread, geotextile, filter fabric, webbing, conveyor belt, tire cord, safety belt
Package 25kg Moisture-Proof Woven Bag, Pallet Packed for Global Bulk Export Shipment
Core Selling Advantages
High Tenacity + Low Elongation, Superior Mechanical Performance

Produced via high-viscosity PET spinning and multi-stage drafting process, this fiber achieves breaking tenacity of ≥4.8 cN/dtex, 30-40% higher than ordinary polyester staple fiber, while elongation at break is controlled at only 18%±3%.

Ultra-Low Heat Shrinkage, Excellent Dimensional Stability

With optimized heat setting process, the fiber has extremely low dry heat shrinkage rate (≤2.0% at 180°C), maintaining stable size under high temperature processing and long-term heating environment.

Outstanding Wear & Aging Resistance, Prolong Service Life

The high-modulus fiber structure brings excellent abrasion resistance and fatigue resistance. Wear resistance is more than twice that of ordinary polyester staple fiber, greatly extending finished product service life.

2.5D Fine Denier + 51mm Standard Length, Excellent Spinnability

The 2.5D fine denier specification balances high strength and good spinnability. 51mm standard cut length is universally compatible with mainstream ring spinning, rotor spinning, and needle punching equipment.

Excellent Chemical Resistance, Adaptable to Harsh Industrial Environment

Made of high-purity virgin PET polymer, the fiber has good resistance to acid, alkali, salt and most organic solvents, maintaining stable performance in chemical corrosion environments.

Frequently Asked Questions
What is the actual breaking tenacity and elongation of this HTLE fiber?
The breaking tenacity is ≥4.8 cN/dtex, which is 30-40% higher than ordinary polyester staple fiber. The elongation at break is 18% ± 3%, featuring typical high strength and low elongation characteristics.
How about the heat shrinkage rate? Will it deform during high temperature processing?
The dry heat shrinkage rate is ≤2.0% at 180°C for 15 minutes. It has excellent dimensional stability and will not shrink or deform obviously during high temperature processing such as dyeing, finishing and hot pressing.
What are the main advantages of this fiber compared with ordinary polyester staple?
It has higher strength, lower elongation, better dimensional stability, more excellent wear resistance and aging resistance. Finished products have stronger load-bearing capacity, are not easy to deform, and have a much longer service life.
Is 2.5D ×51mm suitable for ring spinning to make high-strength sewing thread?
Yes, 2.5D fine denier + 51mm length is the classic specification for spinning high-strength sewing thread. It has good spinnability, few yarn defects and high yarn strength, and is fully compatible with mainstream ring spinning and rotor spinning equipment.
Does it have chemical resistance? Can it be used for industrial filtration?
Yes, it has good resistance to acid, alkali and most chemical solvents. It maintains stable performance in harsh environments and is very suitable for industrial filter felt, dust removal filter bags and chemical filter media.
Can I customize other denier, length or strength grades?
Absolutely. We support customized denier, cut length, strength grade and shrinkage index according to your specific product requirements and application scenarios.
Can I get free samples for strength and spinning test?
Small test samples are provided free of charge for strength test, elongation verification, shrinkage test and production line trial production.
Product Details
Name: High Strength And Low Stretch Fiber
Specification: 2.5*51MM
Native/Regenerative: Native
Color: White
More Sizes: Customizable
Siliconized/Non-Silicified: Non-silicified

Ms. Heidi

Overseas Sales Manager

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