Bio-Based Ptt Fiber Replacement of Spandex & Nylon Sustainable Textile Material

Product Description

Bio-based PTT fiber
1.4D*38MM
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Specifications can be customized

 

Product Description

Our 1.4D×38MM bio-based PTT staple fiber is a high-performance sustainable polyester raw material, representing the third-generation upgraded polyester technology. It perfectly balances environmental protection, comfort and functional performance, and is widely recognized as an ideal upgraded replacement for ordinary polyester, partial spandex and nylon in the textile industry.
 

Different from traditional petroleum-based synthetic fibers, this PTT fiber uses plant-fermented bio-based PDO as core raw material, replacing part of petroleum resources with renewable biomass. The production process greatly reduces carbon emission and energy consumption, which is in line with the global textile industry's low-carbon transformation trend and helps downstream brands build sustainable product competitiveness. Its unique Z-shaped helical molecular structure gives the fiber natural spring-like elasticity, with excellent stretch recovery far exceeding ordinary polyester. Fabrics made from it maintain a fitted shape after long-term wearing and washing, without sagging, wrinkling or deformation, providing comfortable and lasting stretch without adding spandex.
 

The 1.4D ultra-fine denier brings silky delicate touch, combining the softness of nylon, the fluffiness of acrylic and the easy-care property of polyester. The 38mm standard cotton-type fixed length adapts to all mainstream spinning and nonwoven equipment, with stable processing performance and low production loss. In addition, its low-temperature atmospheric pressure dyeing feature significantly reduces dyeing energy consumption and processing cost, while achieving more vivid and uniform coloring effect than ordinary polyester.
 

With excellent stain resistance and anti-aging performance, the fiber is easy to wash and care, and has a longer service life. It supports diversified blending schemes, and can be matched with a variety of natural and synthetic fibers to develop products of different grades and functions. It is widely used in high-end apparel, home textile, carpet, automotive interior and other fields.
 

All products are produced with strict batch quality control to ensure consistent fineness, length, elasticity and dyeing performance of each batch. Factory direct supply with sufficient stock and competitive wholesale price. Free test samples are provided for elasticity testing, dyeing trial and spinning line pilot production. Customized denier, length and functional modification services are available for large-volume orders, supporting long-term stable OEM cooperation for textile mills, garment factories and home textile brands worldwide.

Wide Application Scope

• Premium Active & Sports Apparel: Yoga leggings, fitness sportswear, running T-shirts, golf apparel, swimwear, shapewear
• Close-Fitting Intimate Apparel: High-end underwear, bras, thermal underwear, base layers, sensitive skin clothing
• Luxury Fashion Knitwear: Fine knitted sweaters, dresses, casual T-shirts, wrinkle-resistant travel apparel
• High-End Home Textiles: Premium bedding, sofa fabrics, decorative cushions, soft blankets, anti-wrinkle curtains
• Commercial & Residential Carpets: Stain resistant residential carpet, commercial office carpet, automotive interior carpet
• Automotive & Industrial Textiles: Car interior fabrics, seat covers, decorative nonwovens, elastic industrial fabrics

Picture details

Product Specification

Item	Detailed Parameter
Product Name	1.4D×38MM Bio-Based Polytrimethylene Terephthalate (PTT) Staple Fiber
Standard Spec	1.4D Ultra Fine Denier, 38mm Standard Cotton-Type Fixed Cut Length
Raw Material	Bio-based 1,3-PDO from renewable biomass + PTA, 37% bio-based carbon content
Molecular Structure	Unique Z-shaped helical spring-like molecular chain for superior elastic recovery
Core Advantages	Sustainable bio-based, high elasticity, low temp dyeable, ultra soft, stain resistant, anti-wrinkle
Elastic Recovery	~82% immediate recovery at 20% elongation, nearly 100% total recovery
Breaking Tenacity	3.8-4.2 cN/dtex, over 92% wet strength retention
Melting Point	225-228°C, lower than PET for energy-saving processing
Dyeing Feature	Atmospheric pressure dyeable at 100°C, 20-30°C lower than ordinary polyester
Moisture Property	Good moisture permeability, breathable, low static buildup
Stain Resistance	Excellent soil & stain release, easy to wash and care
Spinning Compatibility	Smooth carding, low fly waste, compatible with all mainstream spinning lines
Applicable Process	Ring spinning, open-end spinning, knitting, woven fabric, blended yarn, nonwoven
Main Application	Activewear, underwear, luxury apparel, home textile, carpet, automotive interior
Environmental Benefit	40% less energy consumption, 20% lower greenhouse gas emission vs. petroleum-based fiber
Package	25kg Moisture-proof Woven Bag, Pallet Packed for Global Bulk Export Shipment

Core Product Advantages

1. Plant-Derived Bio-Based Material, Low Carbon Sustainable & Eco Certified

This PTT staple fiber is synthesized with bio-based 1,3-propanediol (PDO) fermented from renewable plant biomass, with up to 37% bio-based carbon content in the polymer chain. Compared with traditional petroleum-based polyester and nylon, its production process reduces energy consumption by about 40% and greenhouse gas emission by about 20%. It is fully compatible with PET recycling systems, conforms to global low-carbon and circular economy trends, and helps brands meet sustainable ESG goals and green textile certification requirements.

2. Z-Shaped Helical Molecular Structure, Outstanding Elastic Recovery & Shape Retention

Benefiting from the unique "Z"-shaped spring-like molecular chain structure, PTT fiber delivers exceptional elastic resilience far superior to ordinary PET polyester. It achieves approximately 82% immediate elastic recovery at 20% elongation and nearly 100% total recovery, maintaining stable stretch performance even after repeated stretching and washing. Fabrics made from this fiber stay shape-retentive, resist sagging and wrinkling, and offer comfortable stretch without adding spandex, greatly simplifying production process and lowering cost.

3. Low Temperature Atmospheric Pressure Dyeing, Energy Saving & Brilliant Color

With lower glass transition temperature than ordinary polyester, PTT fiber can be dyed evenly under atmospheric pressure at 100°C, 20-30°C lower than conventional PET dyeing temperature. Dye molecules penetrate easily into the fiber interior, achieving full, vivid and uniform color with high color fastness. This feature significantly reduces dyeing energy consumption, shortens processing cycle, and lowers production cost for dyeing mills, while avoiding high-temperature damage to fiber elasticity.

4. 1.4D Ultra Fine Denier, Silky Soft & Fluffy Premium Hand Feel

The 1.4D fine denier design endows the fiber with ultra-soft, smooth and skin-friendly texture, combining the softness of nylon, the fluffiness of acrylic and the stain resistance of polyester in one material. Finished fabrics are delicate, drapable and non-irritating to skin, bringing premium wearing comfort. It effectively solves the stiff and rough hand feel problem of ordinary polyester, making it ideal for high-end close-fitting apparel and luxury home textiles.

5. 38mm Standard Cotton-Type Length, Excellent Spinnability & Low Production Loss

Precision cut to 38mm standard cotton length with neat smooth incision and uniform fiber length distribution, this staple matches all mainstream ring spinning, open-end spinning and nonwoven production lines perfectly. It features smooth carding, low yarn breakage and low flying waste, runs stably at high production speed without machine adjustment, effectively improving production efficiency and reducing raw material loss for spinning mills.

FAQ

Q1: What makes PTT fiber bio-based and sustainable?

 

A1: It is synthesized with bio-based 1,3-PDO fermented from renewable plant biomass, with 37% bio-based carbon content. Production reduces energy use by ~40% and carbon emission by ~20% compared with petroleum-based fiber.

Q2: How is the elasticity compared with ordinary polyester and spandex?

 

A2: Its Z-shaped helical structure delivers far better elastic recovery than ordinary PET polyester. It provides comfortable long-lasting stretch without spandex, avoiding the aging and durability issues of spandex, with longer service life.

Q3: Can it be dyed with ordinary polyester dyeing process?

 

A3: It can be dyed evenly at 100°C atmospheric pressure, 20-30°C lower than ordinary polyester, saving dyeing energy and cost, with more brilliant and uniform color result.

Q4: Is 38mm length compatible with common spinning machines?

 

A4: Standard cotton-type 38mm fixed length fits all ring spinning, open-end spinning and nonwoven equipment, with smooth carding, low yarn breakage and low flying waste.

Q5: What is the hand feel of fabrics made from this fiber?

 

A5: 1.4D fine denier brings silky soft, fluffy and drapable hand feel, combining the softness of nylon and the stain resistance of polyester, much more comfortable than ordinary polyester.

Q6: Can it blend with cotton, viscose and other fibers?

 

A6: Excellent blending compatibility, can be mixed with cotton, viscose, modal, wool and polyester in any ratio to adjust fabric softness, elasticity and cost freely.

Q7: Can I get free samples for performance test and spinning trial?

 

A7: Small test samples are provided free of charge for elasticity test, dyeing trial and spinning line production verification.