SEWING THREADS
Innovative & high-performance threads for every application
When precision, durability, and innovation matter, Alterfil sewing threads deliver outstanding performance across industries. With patented Alterfil S coating, seam puckering becomes a thing of the past—ensuring smooth, durable, and perfectly set seams with just steam or ironing.
Thread that elevates your design
From fashion and workwear to home textiles, sails, tents, and technical applications, our sewing threads provide reliable strength, flexibility, and adaptability to your specific needs.
Need a customized thread solution? We offer a wide range of colors, materials, thicknesses, and functionalities tailored to your exact requirements.
Corespun – Superior strength & seam performance
Why choose corespun threads?
Corespun threads combine a high-strength filament core with a soft, durable outer fiber, offering the perfect balance between strength, flexibility, and smooth stitch formation.
Key benefits:
- Exceptional seam strength and durability
- Enhanced elasticity and flexibility for dynamic fabrics
- Ideal for fashion, workwear, and heavy-duty textiles
Alterfil S – The patented coating advantage
Say goodbye to puckered and unstable seams. Alterfil S’s patented finish is activated by steam or heat, stabilizing the thread and creating seams that retain their shape and structure, even under demanding use.
Key benefits:
- Self-fixing seams – activated with steam or ironing
- Superior stitch quality for all fabric types
- Reduced thread breakage and fraying
Texturated – Soft, elastic, & highly versatile
Alterfil B – The stretchable & soft solution
For applications requiring maximum elasticity and softness, Alterfil B is ideal for knitwear, lingerie, and sportswear.
Key benefits:
- Exceptional elasticity for stretch fabrics
- Smooth, soft touch—perfect for next-to-skin applications
- Highly durable and resistant to seam stress
Alterfil C – Strong & resilient for high-performance sewing
When strength and reliability matter, Alterfil C offers enhanced durability for applications such as automotive, upholstery, and technical textiles.
Key benefits:
- High resistance to abrasion and wear
- Ideal for industrial and technical sewing
- Excellent seam coverage with soft texture
The blend– That makes the seam invisible to feel
Seam softness you can feel—Or rather, can't!
The use of different threads for needle, hook, and bobbin can affect the properties of the seam. When Alterfil S is combined with Alterfil C, it creates a seam that balances strength and comfort. This combination makes it feel as if there is almost no seam at all – perfect for garments that require both durability and a seamless feel
- Soft Seams: Combining Alterfil S as the needle thread with Alterfil C as both the looper and bobbin threads can result in a seam that balances strength and softness.
- Alterfil S’s high-tech coating ensures seam stability, while Alterfil C’s softer texture provides a gentle feel, making this combination suitable for garments requiring both durability and comfort.
The right thread for every stitch
From delicate fashion fabrics to heavy-duty technical textiles, Alterfil sewing threads deliver unmatched strength, precision, and durability. And this is just the beginning—our range includes countless thread types, colors, and coatings tailored to your exact needs.
