Stitch Bonded High Silica Needle Mat

-Performance Parameters-

-Specification-

Notes

• Custom Widths: Standard production width is 920 mm (36.2"), but custom widths ranging 800–1800 mm (31.5–70.9") are available upon request.

• Weight Tolerance: ±10–12 g/m² depending on product grade.

• Roll Length: Subject to manufacturing tolerance; custom roll lengths available.

• Conversion: 1 mm = 0.03937 in.

- Stitch Bonded High Silica Needle Mat -

The Stitch Bonded High Silica Needle Mat is manufactured from high-purity amorphous SiO₂ fibers (95–99%) using a needle-punching process reinforced with aramid and silica sewing threads. This stitch-bonding construction ties the fiber web through thickness, preventing delamination and enhancing tensile and tear resistance. Compared with conventional non-stitched mats, it provides superior durability in vibration-prone systems, under high-velocity gas flows, and during repeated installation or handling.

Engineered for continuous service up to 1100 °C (2012 °F) with linear shrinkage limited to 7–8%, the mat maintains excellent dimensional stability under thermal cycling. Thermal conductivity remains low across a wide temperature range, measured at 0.04 W/m·K at 100 °C, 0.16 W/m·K at 600 °C, and 0.34 W/m·K at 1000 °C. Its inorganic, non-combustible structure contains no asbestos, halogens, or VOC emissions, ensuring both worker safety and compliance with environmental standards. The material also exhibits high electrical resistivity of 10¹⁷–10¹⁸ Ω·cm, supporting dual thermal and electrical insulation requirements, while its open fibrous structure contributes incidental acoustic absorption.

The mat is easily fabricated by cutting, die-cutting, mechanical pressing, or water-jet machining with suitable support, and stitch reinforcement helps retain edge integrity during processing. Standard protective equipment such as gloves, sleeves, and eye protection is recommended during handling. Off-cuts are inert and may be disposed of as non-hazardous mineral waste.

For regulated industries such as construction, HVAC, or industrial equipment manufacturing, the mat should be specified within listed assemblies to meet UL and NFPA requirements. Performance verification may follow ASTM E136 for non-combustibility, ASTM C177/C518 for thermal conductivity, ASTM C356 for linear shrinkage, and ASTM D257 for electrical resistivity. Test documentation can be provided on request to support project qualification, OEM supply chains, or contractor submittals.

By combining high-temperature endurance, mechanical stability from stitch bonding, clean composition, and compatibility with recognized U.S. test methods, the Stitch Bonded High Silica Needle Mat offers a reliable insulation solution for industrial furnaces, kilns, metallurgical plants, automotive heat shields, electrical housings, and fire-rated building systems.

- Features -

• Stitch-bonded reinforcement prevents delamination and edge fray.
• Stable performance at 1100 °C with low shrinkage.
• Low thermal conductivity for energy conservation.
• High electrical resistivity for insulation safety.
• Non-combustible, asbestos-free, halogen-free, and VOC-free.
• Easy to fabricate into custom forms with consistent integrity.
• Provides additional sound absorption benefits in assemblies.

-Application-

Construction & HVAC: Fire-rated ducts, fire doors, wall cavities, chimneys, and heating appliances.

Industrial Thermal Systems: Kilns, furnaces, metallurgy equipment, annealing and tempering lines, expansion joints, insulation blankets.

Automotive & Transportation: Engine bays, bulkheads, mufflers, and thermal/acoustic shielding.

Electrical & Lighting: Floodlight housings, enclosures requiring thermal and electrical isolation.

Protective Equipment: Fire blankets, heat shields, and high-temperature protective apparel.

General Fabrications: Thermal screens, baffles, and retrofitted insulation in high-heat environments.