The knitting technique used during the manufacturing process significantly impacts the elasticity of sewing button hole knit elastic bands. The choice of knit structure and the number of stitches per inch play a vital role in determining the band's stretchability.

Warp Knit: Warp knitting produces fabrics with excellent stretch and recovery. Sewing button hole knit elastic bands created using this technique offer high elasticity and durability.

Weft Knit: Weft knitting is another common technique used to create elastic bands. While it may not offer the same degree of elasticity as warp knitting, it can still provide adequate stretch for many applications.

The width and thickness of sewing button hole knit elastic bands also influence their elasticity. Wider bands generally offer more stretch and support, making them suitable for applications like waistbands. Thinner bands are often used in applications where a lighter touch of elasticity is needed, such as in cuffs or lingerie.

The tension applied during the knitting process affects the elasticity of the bands. Higher tension can result in a firmer and more elastic band, while lower tension can produce a softer and less stretchy band.

Post-processing treatments can impact the elasticity of sewing button hole knit elastic bands. Treatments like heat setting can enhance the band's elasticity and help it retain its shape and stretchability over time.