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  • Polyester Low Melting Yarn For Shoes Upper
  • Polyester Low Melting Yarn For Shoes Upper
PRODUCT

Polyester Low Melting Yarn For Shoes Upper

Feature: 
1. High tenacity and easy rewind
2. 110-degree melting point 
3. Low melting 
4. Special use for shoes upper

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All counts for choice
150D 
Applications: 
Shoes upper 
Other:
Shanghai seaport
Special produce by order

Features Section
Feature 1 — High Tenacity
This yarn maintains structural integrity under the tension conditions common to shoes upper production lines. Its high tenacity rating means it resists breakage during high-speed feeding, stitching, and bonding processes, reducing production interruptions and improving yield consistency across long runs.

Feature 2 — Easy Rewind
Wound to precise tension tolerances, this yarn unwinds smoothly and evenly on automated equipment. The easy rewind characteristic minimizes tangling, uneven feeding, and bobbin change frequency — supporting continuous, high-throughput production environments where downtime directly affects output costs.

Feature 3 — 110-Degree Melting Point
The activation temperature of 110 degrees Celsius is deliberately engineered for shoes upper applications. At this threshold, the yarn bonds reliably to adjacent layers — including synthetic mesh, knit fabric, and nonwoven linings — without the thermal degradation that would occur at standard polyester melt temperatures (approximately 260 degrees Celsius). This controlled melt profile gives manufacturers precise bonding windows and process repeatability.

Feature 4 — Purpose-Built for Shoes Upper
Unlike general-purpose low melt yarns adapted from other industries, this product is formulated specifically for the structural and bonding requirements of shoes upper construction. It is compatible with the material compositions, process temperatures, and dimensional tolerances standard in modern athletic and casual footwear manufacturing.

Applications Section
Primary Application: Shoes Upper
This yarn is engineered as a bonding element within shoes upper constructions. It is used to laminate fabric layers, reinforce structural zones, and secure linings to outer materials during heat-pressing or thermal bonding stages of footwear assembly.

Related Applications:
Where the thermal bonding profile is compatible, this yarn is also used in fabric lamination for sportswear, structured textile components, and other footwear parts requiring controlled low-temperature melt bonding.

Why 110 Degrees Celsius Matters？
Standard polyester melts at approximately 260 degrees Celsius. Most shoes upper materials — including synthetic mesh, TPU-coated fabrics, and stretch knits — cannot withstand direct exposure to that temperature range without distortion or damage.
At 110 degrees Celsius, this yarn activates within the safe processing window of these materials. It bonds without scorching, discoloring, or weakening the surrounding fabric structure. For manufacturers running thermal bonding or heat-pressing operations, this means more consistent output, lower material rejection rates, and greater flexibility in working with heat-sensitive upper components.

About
GC FIBER
GC FIBER has been a professional custom Polyester Low Melting Yarn For Shoes Upper Manufacturers and Polyester Low Melting Yarn For Shoes Upper Company 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.
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Low Melting Yarn Industry knowledge

Polyester Low Melting Yarn for shoes upper is engineered for manufacturers who need a bonding yarn that performs consistently on high speed knitting and weaving lines. At NanTong Global Chemical Fiber Co Ltd, known in the industry as GC FIBER, we have produced low melting yarn and other functional polyester yarns since 2006. This section explains how the yarn works, where it fits in a shoes upper production line, and the technical data buyers usually request before placing a trial order.

How Low Melting Yarn Works in Shoes Upper Production

A low melting yarn contains a polyester component with a reduced melting point, allowing it to fuse with surrounding fibers under heat pressing instead of relying on glue or extra stitching. This is why sportswear and sneaker factories use it for knitted shoes upper, three dimensional flyknit panels, and heel counters. Because the softening point is lower than standard polyester, the bonding step can run at moderate temperature, which protects the color and hand feel of the outer fabric. Our production team at GC FIBER monitors melting point stability batch by batch so that customers see the same bonding result on every shipment.

Core Product Features

High Tenacity and Easy Rewind

The yarn keeps a stable tensile strength through winding, knitting, and heat pressing, and it rewinds smoothly without frequent breakage on automated equipment.

110 Degree Melting Point

A controlled melting point close to 110 degrees Celsius allows precise heat setting so the bonding process does not damage adjacent yarns or printed patterns.

Low Melting Bonding Performance

Once heated, the yarn softens and forms a fixed bond point that holds the shoes upper structure together without adding extra weight or stiffness to the fabric.

Special Use for Shoes Upper

The specification is optimized for knitted and woven shoes upper applications, including flyknit, jacquard mesh, and heel reinforcement areas.

Technical Parameters

Reference specification for Polyester Low Melting Yarn for shoes upper
Item Value
Material Polyester Low Melting Fiber
Melting Point About 110 degrees Celsius
Tenacity High tenacity grade
Winding Performance Easy rewind, low breakage rate
Recommended Use Shoes upper, knitted flyknit panel, heel counter bonding
Packing Cone or as customer request

Where This Yarn Fits Your Production Line

For sourcing teams and factory engineers, the main question is how a new yarn integrates with existing machinery and heat pressing steps. This low melting yarn is compatible with standard circular knitting and flat knitting machines used for shoes upper, and the bonding step can be done with common heat press or oven setting equipment already installed in most sportswear factories. Our technical team at GC FIBER can share trial data and suggested heat press parameters based on your fabric structure and equipment model, so your engineers can validate the yarn before scaling up an order.

Frequently Asked Questions

What melting point does this yarn have

The yarn is designed with a melting point close to 110 degrees Celsius, which allows a moderate and controllable heat pressing process for shoes upper bonding.

Is this yarn only used for shoes upper

This grade is specially formulated for shoes upper applications, though the low melting fiber family can also serve other bonding and nonwoven applications on request.

Can the yarn be used on existing knitting machines without adjustment

In most cases yes, since the yarn is built for easy rewind and stable tension, but we recommend a small trial run first to confirm settings for your specific machine model.

Does GC FIBER support custom specifications

Since 2006 we have worked with footwear and textile customers on customized yarn projects, and we welcome inquiries for adjusted melting point, tenacity, or packing format based on your production needs.

NanTong Global Chemical Fiber Co Ltd, GC FIBER, has focused on special and functional eco friendly textile yarns since 2006, including Low Melting Yarn, Biodegradable Yarn, ECDP Yarn, Anti Static Yarn, HDPE Yarn, Bio component Yarn, and Polyester Filament Yarn. If your team is evaluating a bonding yarn for a new shoes upper program, we are ready to provide samples and technical support at gcfyarn.com.