Flame Retardant Single Component Short Cut Fiber for Insulation Paper & Composite

Product Description

Flame retardant single component short cut fiber
1.5D*6MM
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Specifications can be customized

Detailed Product Description
The 1.5D*6MM monocomponent intrinsic flame retardant short cut polyester fiber addresses long-standing pain points in the special paper and wet nonwoven industry: conventional surface-coated flame retardant short fibers easily lose their fire resistance during wet processing and washing due to coating leaching; uneven cutting length leads to poor dispersion, fiber clumps and frequent paper defects; and inconsistent batch quality causes unstable production yield.

 

This product solves these issues through material and process optimization. The intrinsic copolymerization flame retardant technology integrates fire-resistant functional groups into the polyester molecular chain during polymerization, achieving permanent flame retardant effect that is unaffected by wet processing, solvent immersion or long-term use. It maintains reliable self-extinguishing performance with a high limiting oxygen index, and produces low smoke and low toxicity during combustion.

The precision 6mm short cut process ensures extremely narrow length tolerance, and the monocomponent homogeneous structure gives the fiber excellent hydrophilic dispersibility. It disperses rapidly and uniformly in aqueous pulp without tangling or agglomerating, resulting in smooth, defect-free paper sheets and nonwoven webs with uniform strength distribution. The 1.5D fine denier further improves fiber bonding force and surface smoothness of finished products, delivering better mechanical properties and finer appearance than coarser fiber specifications.

It can be used 100% pure to produce high-grade flame retardant paper and filter media, or blended with wood pulp, glass fiber, viscose and other raw materials in different proportions to flexibly balance product performance and production cost. Every production batch undergoes strict quality inspection for fineness, length, flame retardant index and dispersion performance to ensure consistent quality.

Widely trusted by paper mills, nonwoven factories and composite material manufacturers, this monocomponent FR short cut fiber is an ideal raw material for producing high-performance fire-safe functional materials. We provide factory-direct wholesale supply, customizable specifications and pre-production sample testing for quality verification.

Application Scenarios

Flame Retardant & Special Paper Manufacturing Fireproof decorative paper, electrical insulation paper, battery separator paper, industrial filter paper and functional specialty paper. Delivers uniform formation, stable flame retardancy and enhanced mechanical strength.

Wet Laid Nonwoven Fabrics Wet laid flame retardant nonwovens, liquid filter media, air filter substrates, medical protective nonwovens and thermal insulation materials. Achieves even web structure and consistent fire performance across the full material surface.

Composite Material Reinforcement Reinforcing filler for engineering plastics, resin-based composites, friction materials and sealing gaskets. Improves impact resistance, dimensional stability and flame retardant properties of finished composite parts.

Industrial Filtration & Insulation Industrial liquid filter elements, high-temperature filter media, electrical insulating gaskets and fire barrier materials. Combines reliable flame resistance with excellent dimensional stability in harsh working environments.




Picture details

Core Features & Benefits

Monocomponent Homogeneous Structure, Excellent Wet Dispersion Single-material monocomponent design with precision 6mm cutting length and narrow length tolerance. Disperses evenly and rapidly in water-based pulp without clumping, tangling or fiber agglomeration, producing smooth, uniform paper sheets and nonwoven webs with minimal defects.

Intrinsic Copolymerization FR, Permanent & Stable Flame retardant functional groups are copolymerized directly into the PET polymer main chain, not surface-applied coating. Will not leach out during wet processing, washing or solvent contact, maintaining reliable self-extinguishing performance throughout the entire product lifecycle.

1.5D Fine Denier, High Strength & Smooth Finish 1.5D fine denier delivers larger specific surface area and stronger interfiber bonding force. Finished paper and nonwoven products feature higher tear strength, bursting resistance and smoother surface texture compared with coarse denier short cut fibers.

Low Smoke & Low Toxicity, Safety Compliant Releases low smoke density and minimal toxic fumes during combustion. Reduces secondary fire hazards, complies with industrial flame retardant safety standards for public spaces, electrical equipment and building materials.

Wide Compatibility & Process Adaptability Compatible with all mainstream wet laid papermaking, inclined wire forming and wet needling processes. Can be used pure or blended with wood pulp, glass fiber, viscose and other fibers to adjust product strength, permeability and cost.

Precision Quality Control, Batch Consistency Strict in-line control over denier deviation, length tolerance and flame retardant index. Uniform fiber specification batch after batch ensures stable production efficiency and consistent finished product performance, reducing defect rates for high-volume manufacturing.


Specification Table

Item	Parameter
Product Name	Monocomponent Intrinsic Flame Retardant Short Cut Polyester Fiber
Denier	1.5D
Cut Length	6mm (precision cut)
Fiber Structure	Monocomponent homogeneous (single component, not bicomponent)
Flame Retardant Method	Intrinsic copolymerization (non-surface coating)
Raw Material	100% Virgin flame-retardant PET polyester
Color	Raw White
Core Advantage	Permanent flame resistance, excellent wet dispersion, high strength, low smoke, uniform length
Main Application	Flame retardant paper, wet laid nonwoven, filtration media, electrical insulation, composite reinforcement, special paper
Compatible Process	Wet laid papermaking, inclined wire forming, wet needling, pulp blending, composite molding
MOQ	Bulk order negotiable, sample available

FAQ

Q1: What is the difference between monocomponent and bicomponent short cut fiber? A: Monocomponent fiber is made of a single uniform polyester material throughout the cross-section, with consistent physical and chemical properties. Bicomponent (sheath-core) fiber has two different polymers, typically used for thermal bonding. This monocomponent FR fiber is designed for wet laid processes and permanent flame retardant performance, not for thermal bonding.

Q2: Is the flame retardant performance permanent? Will it wash off during papermaking? A: Yes, it adopts intrinsic copolymerization flame retardant technology, not surface coating. The flame retardant components are part of the polymer molecular chain, so they will not leach out or wash off during wet processing, washing or solvent contact, maintaining permanent fire resistance.

Q3: Can this fiber be blended with wood pulp or other fibers for papermaking? A: Absolutely. It has excellent compatibility with wood pulp, viscose, glass fiber and other common papermaking fibers. It can be blended in different proportions to adjust the strength, flame retardant grade and cost of finished paper products.

Q4: Is the 6mm cut length accurate? Will there be long or short fiber deviation? A: We adopt precision cutting process with strict length tolerance control. The fiber length is highly uniform, which ensures excellent dispersion in pulp and avoids paper defects caused by uneven fiber length.

Q5: Can we get samples for dispersion and flame retardant testing? A: Yes, samples are available for laboratory testing, papermaking trials and flame retardant performance verification. Please contact us to request sample details.

Q6: What is the lead time for bulk orders? A: Depends on order quantity and specification requirements. Standard specifications generally ship within 7-15 working days after deposit confirmation.