Nylon sewing thread or bonded thread, made from high tenacity filament Nylon 66, is characterized by high stretch (elongation, elasticity, extensibility). This characteristic makes Nylon 66 sewing thread an important variety of industrial sewing thread.

‌Key Advantages and Practical Significance of High Stretch

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‌1. Coping with Stretching and Deformation of Sewn Products (Core Advantage)‌
This is the most important value of nylon sewing thread. It allows the stitches to move with the fabric, rather than restricting or working against the fabric's movement.

‌Practical Significance:‌

● ‌Sewing Elastic Fabrics:‌ When sewing highly elastic fabrics like swimwear, sportswear, Lycra underwear, and tights, nylon thread can stretch and recover along with the fabric. If inelastic thread (like cotton) is used, the stitches will break immediately when the fabric is stretched, as the thread cannot extend.

‌● Adapting to 3D Contours:‌ When sewing three-dimensional objects like sofas, car seats, footwear, and luggage, the fabric is subjected to multi-directional stress during the forming process. The extensibility of nylon thread can absorb these stresses, preventing thread breakage due to stress concentration either during sewing or in the finished product's use.

‌● Withstanding Impact Tension:‌ For load-bearing equipment like backpacks, tents, and safety belts, sudden, immense pulling forces may occur during use. Nylon thread can cushion such impacts through its own extension, providing a safety buffer for the entire structure instead of snapping suddenly.

‌2. Reducing Thread Breakage During Sewing

‌Practical Significance:‌

● ‌‌High-Speed Sewing:‌ Under industrial high-speed sewing machines, where the needle and fabric move rapidly, the instantaneous tension on the thread is significant. The extensibility of nylon thread can tolerate these instantaneous tension peaks and minor improper tensions, thereby reducing production stoppages due to thread breakage and improving efficiency.

‌● ‌Compatibility with Thick-to-Thin Fabric Transitions:‌ When the sewing machine needle moves suddenly from multi-layer thick fabric areas to single-layer thin fabric areas, the thread tension changes. The elasticity of nylon thread allows it to adapt better to this tension variation, preventing breakage.

‌3. Forming Full and Three-Dimensional Stitches‌

‌Practical Significance:‌ Due to its elasticity, nylon thread can form fuller loops, particularly in lockstitches and chain stitches, making the stitches appear more rounded and three-dimensional, which can sometimes enhance the decorative effect.

 In the field of sewing, the high stretch of nylon sewing thread is central to its functionality. It is not intended for "cushioning handfeel" but for "dynamic matching" – enabling the seam to move, deform, and withstand pressure together with the product. Choosing nylon sewing thread essentially means selecting an engineering solution capable of adapting to dynamic and elastic requirements. Therefore, nylon sewing thread or bonded thread is highly suitable for sewing the following items:

‌‌● Elastic Apparel:‌ Swimwear, sportswear, underwear, dancewear.
● Home Furnishings & Furniture:‌ Sofas, car seats, upholstery.
● Footwear & Leather Goods:‌ Sports shoes, leather shoes, gloves.
● Outdoor Equipment:‌ Tents, backpacks, sleeping bags.
● ‌Industrial Applications:‌ Filter bags, safety belts.

 Bonded Nylon 66 Thread     High Stretch High Strength   Nylon 6.6 Bonded Thread    PA66 Bonded Thread   PA6.6   Nylon 6,6 Sewing Thread