Automotive Sewing Threads

Ultra-High Strength & Wear Resistance

Car seats, safety belts, door panel fabrics endure constant stretching and friction (e.g., passenger entry/exit, seat adjustment). The sewing thread must have much higher breaking strength than regular garment threads, with no easy fuzzing or breaking after long-term friction.
It is usually made of high-strength fibers (nylon, polyester, aramid, etc.); high-strength industrial yarns are even used for critical parts like safety belt sewing.

Environmental Stability

• Temperature resistance: Withstands extreme in-car temps (over 70℃ in summer sun, below -30℃ in winter) without brittleness, deformation or significant strength loss.
• Light resistance: No fading or aging from long-term sunlight (especially UV), preventing interior seam splits due to thread breakage.
• Chemical resistance: Resists in-car contaminants (sweat, beverages, cleaners) without mildew or degradation.

Eco-Friendliness & Safety

Complies with automotive environmental standards (EU REACH/RoHS, China GB), containing no formaldehyde or heavy metals to avoid odors or health risks.
Flame retardancy is required for parts near the engine compartment to reduce fire risks.

Appearance Consistency

Thread color must match interior fabrics accurately, with high wash/light fastness to avoid fading/color bleeding.
Uniform thread evenness (no joints, minimal fuzz) prevents uneven stitches or exposed ends after sewing.