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Silica Sewing Thread

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Silica Sewing Thread Specification

Shape
Thread yarn (round cross-section)

Glass Type
Quartz (Silica) glass fiber

Density
2.2 Gram per cubic centimeter(g/cm3)

Temperature
Continuous use up to 1000C, short-term up to 1200C Celsius (oC)

Coating Type
Uncoated; coating options available

Usage & Applications
Sewing high temp fabrics, fireproof barriers, aerospace insulation, thermal shields

Thermal Conductivity
Low (approx. 0.034 W/mK at room temp) Watt/Meter/K (w/(m.k)

GSM
Not applicable (thread); may vary if supplied as tape/yarn

Thickness
Typically 0.4 mm to 1.0 mm Millimeter (mm)

Material
Pure amorphous silica fiber

Application
High temperature sewing and stitching, insulation of heat resistant textiles, protective covers, welding blankets, furnace curtains

Technique
Twisted and braided sewing thread processing

Surface Treatment
Uncoated / option for PTFE or silicone coating

Electrical Insulation
Excellent dielectric properties

Combustibility
Non-combustible, does not degrade in flame

Flexibility
Highly flexible for tight seams

Elongation at Break
<5%

Tensile Strength
High tensile strength for industrial sewing

Melting Point
Approx. 1700C

Moisture Absorption
Negligible

Filament Diameter
Typical: 912 m

Packaging Type
Spools / bobbins

Storage
Store in dry, cool conditions

Yarn Count
Available in various tex counts (22100 tex)

Silica Sewing Thread Trade Information

Main Export Market(s)
Asia, Australia, Central America, North America, South America, Eastern Europe, Western Europe, Middle East, Africa

Main Domestic Market
All India

About Silica Sewing Thread

Silica Sewing Thread

Common applications for this sewing thread are used to sew filter bags by hand sewing, also used to sew weak alkali-resistant weave. It fulfill the need of sewing filter bags used in carbon black/ metallurgy/ cement industries .

Property:
Produced from an extremely pure silica base yarn
Silica based materials provide burn-through protection from molten metal and weld splatter
Used at 1100 degree C continuously , molts above 1700 degree C
Highly flexible and virtually no shrinkage
High abrasion resistance and tensile strength
Different coating available, and normally coating materials is PTFE, PU, etc.

Continuous working temp.: 1100 degree C
Short time working temp.: 1400 degree C
Instant working temp.:1650 degree C

Roll weight around 500g/spool, 24rolls/ctn

Note:
1. Coatings (-A is uncoated thread, and the others are coated.)
2. As this silica sewing thread is leached silica(leached silica have less tensile strength), when it's used in industrial high speed sewing machine require a transmission to limit the velocity less than 30 punches per minute to avoid to break the thread.

Engineered for Extreme Environments

Our Silica Sewing Thread is designed to perform where other threads fail. With high tensile strength, negligible moisture absorption, and excellent flexibility, it excels in high-temperature insulation, fire barriers, and aerospace applications. The thread's non-combustible nature and resistance to acids, salts, and most solvents make it a trustworthy choice for reliable and safe stitching.

Versatile Thread Processing

Manufactured through twisted and braided techniques, this sewing thread is available in various tex counts for customization. Uncoated as standard, it can also be supplied with PTFE or silicone coatings to further improve chemical resistance and ease of use during sewing operations. Custom spool sizes and lengths are available to suit specific project requirements.

Superior Insulation and Safety

With low thermal conductivity and excellent dielectric properties, silica sewing thread is especially suited for electrical insulation, furnace curtains, welding blankets, and protective textile barriers in hazardous environments. The pure quartz glass fiber composition ensures unparalleled longevity, even under continuous heat stress.

FAQ's of Silica Sewing Thread:

Q: How is silica sewing thread used in industrial and high-temperature applications?

A: Silica sewing thread is primarily used for sewing and stitching high-temperature resistant fabrics, insulation blankets, furnace curtains, welding pads, protective covers, and fire barriers. Its extreme heat tolerance and flexibility make it ideal for aerospace, metallurgy, and industrial safety textiles.

Q: What are the benefits of choosing pure amorphous silica fiber thread over standard threads?

A: Pure amorphous silica fiber threads offer non-combustibility, higher continuous use temperatures (up to 1000C), excellent chemical resistance (except strong alkali), low thermal conductivity, and remarkable dielectric properties, providing superior safety and durability in harsh environments compared to standard threads.

Q: When should optional coatings like PTFE or silicone be considered for this thread?

A: PTFE or silicone coatings are recommended when extra chemical resistance, reduced friction, or smoother sewing performance is needed. These coatings facilitate easier processing on sewing machines and improve longevity in chemically aggressive or high-moisture environments.

Q: What storage conditions are necessary to maintain thread quality?

A: Silica sewing thread should be stored in cool, dry conditions, out of direct sunlight and away from strong alkalis, to prevent contamination or degradation and to maintain optimal tensile strength and performance.

Q: Where can Silica Sewing Thread be effectively applied?

A: Applications include sewing heat-resistant garments, fireproof barriers, welding blankets, aerospace insulation, furnace and kiln curtains, and other areas requiring high thermal or chemical resistance. Its versatile properties make it suitable for multiple industries.

Q: What is the manufacturing process for Silica Sewing Thread?

A: The thread is produced by twisting and braiding pure amorphous silica fibers, which results in a flexible yet strong yarn. The standard product is uncoated, but additional surface treatments such as PTFE or silicone can be applied for specialized purposes.

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