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Hollow (Thermal) Yarn

-- Steady & Reliable Manufacturer --

Introduction

Hollow Yarn is a high-tech filament designed for superior thermal insulation and lightweight comfort. By using a specialized spinneret, GC FIBER creates a continuous air pocket inside each individual fiber. This "hollow core" acts as a natural insulator, trapping body heat and creating a thermal barrier against external cold—similar to the structure of polar bear fur. Because air is lighter than polymer, fabrics made from hollow yarn are 20%-30% lighter than standard fabrics of the same thickness.

Our hollow fibers are primarily produced from polyester (PET) for its moisture-wicking and quick-dry properties. The air core also provides enhanced "bulkiness" and a soft, wool-like hand-feel without the weight. This makes it the premier choice for winter base layers, thermal socks, and lightweight filling for high-end outdoor jackets.

Related products

Services

We insist on timely and fast service, the implementation of all-weather tracking service, adequate spare parts inventory, so that our customers have no worries.

  • Wide Variety

    Wide Variety

    Design & Manufacturing. In stock or customizable.

  • Sample and Catalog

    Sample & Catalog

    OEM/ODM available.

  • Production and Delivery

    Production & Delivery

    Flexible production and delivery policies

  • Business Experience

    Business

    Over 19 years of experience in eco-friendly textile products

Specification

Hollow Ratio15% to 35% internal volume
Thermal ConductivityLow (Excellent insulation)
Weight Reduction20% - 30% vs. solid filament
Moisture Regain0.4% (Hydrophobic/Quick-dry)
Fiber ShapeCircular or C-shape
Denier Range50D to 300D
LusterSemi-Dull or Full-Dull
Tenacity3.5 to 4.5 cN/dtex

Application

Thermal Base Layers

Used in "Heat-Tech" style underwear and shirts for extreme cold weather insulation.

Lightweight Performance Denim

Allows for the production of "winter jeans" that are warm yet significantly lighter and faster to dry than traditional heavy cotton denim.

Aviation & Automotive Carpeting

Used where weight reduction is critical for fuel efficiency without sacrificing thermal or acoustic insulation.

Advantage

  • Extreme Lightness: Provides high-volume appearance and warmth with minimal mass.

  • Rapid Drying: The increased surface area and air core allow moisture to evaporate much faster than solid fibers.

Payment and Shipping

Standard T/T or L/C. Shipped in moisture-proof vacuum packaging to maintain fiber loft.

Common Questions

  • Q: Does the hollow part collapse?
  • A: No, our fibers are engineered with a rigid molecular structure to maintain the air pocket even after high-pressure weaving.
About
GC FIBER
GC FIBER has been a special textile factory in China since 2006 years. We are devoted to researching, developing, producing, and selling special and functional eco-friendly textile products.
Our products include Biodegradable Yarn, Low Melting Yarn, ECDP Yarn, Anti Static Yarn, HDPE Yarn, Bio-component Yarn, and Polyester Filament Yarn.
We are always interested in cooperating with our guests to develop new material.

WHY WE ARE SO TRUSTED

We have got a high reputation in both domestic and overseas markets.

Professional

We will communicate with customers professionally, listen to their opinions and give useful suggestions, and spend time and energy to solve every problem, no matter all the problems you encounter.

Quality

We have strict quality control requirements and the advanced testing equipment in the industry. Every process has professionals to conduct inspections to ensure product quality.

Cost

We have a number of production lines, a number of production machines, comprehensively improve product quality and production efficiency.

Design and R&D

We devote to research, development, production and sales of special and functional eco-friendly textile product.

Diversity

Our product includes PBS biodegradable product, recycled easy dyeing cationic yarn, PLA yarn, Low melting yarn, Anti-Static yarn ,PBS fiber, PLA fiber, FR nylon fiber etc.

Capacity

The company has sufficient production capacity and high control over raw material prices, quality and stable supply, which can meet the needs of customers with different procurement volumes.

Service

We insist on timely and fast service, the implementation of all-weather tracking service, adequate spare parts inventory, so that our customers have no worries.

Shipment

We are near Ningbo Port and Shanghai Port, and are very convenient and quick to transport cargo to other national capitals.

Diversified Professional Team

GC FIBER has unique sales, research and development, design, production departments and expertise to provide customers and stakeholders in various industries with specialty, functional and environmentally friendly textiles.

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