Needle Material

Denim is a heavy - duty fabric known for its thickness and abrasion resistance, so the needle material matters significantly. Tungsten carbide - coated needles are excellent for sewing denim. The tungsten carbide coating makes the needle extremely hard - wearing, enabling it to cut through the tough denim fibers without dulling quickly. This ensures clean and consistent stitches throughout the sewing process. Additionally, stainless - steel needles are also a popular option. Stainless - steel offers good corrosion resistance, which is beneficial when dealing with denim that may be washed frequently. It can withstand the rigors of sewing through multiple layers of denim, maintaining its shape and sharpness.

Needle Type

Stretch Needles

Many modern denim fabrics have some degree of stretch, either due to the addition of elastane or other stretchy fibers. Stretch needles are specifically designed for such materials. They have a slightly rounded tip that allows them to pass through the stretchy fibers of denim without causing damage or snags. This helps preserve the elasticity of the fabric, ensuring that the denim garment, like a pair of stretch jeans, retains its shape and comfort even after repeated wear and washing.

Denim Needles

For traditional, non - stretch denim, denim needles are the best choice. These needles are extra - sharp and have a reinforced blade. The sharp tip can easily penetrate the tightly - woven and thick structure of denim, while the reinforced blade provides the strength needed to handle the heavy - duty nature of the fabric. Denim needles create strong, secure stitches that can withstand the stress and strain that denim garments typically endure.

Needle Size

The size of the industrial overlock needle for denim depends on the weight of the fabric. For lightweight denim, which is often used for summer jackets or shirts, a needle size of 80/12 or 90/14 is suitable. These sizes can handle the relatively thinner denim without causing excessive damage to the fabric. When working with medium - to heavy - weight denim, commonly used for jeans, a larger needle size such as 100/16 or 110/18 is more appropriate. Larger needles can easily pass through multiple layers of thick denim, including when sewing seams like the waistband, fly, or hems, ensuring that the stitches are tight and secure.

In conclusion, when it comes to sewing denim with an industrial overlock machine, carefully considering the needle material, type, and size is essential. Making the right choice will lead to professional - looking seams and denim garments that are both stylish and durable.