Selecting the correct needle plays a significant role in the stitching process. For leather, a needle with a triangular or chisel point is recommended. This design allows for easier penetration through tough leather fibers. Additionally, the size of the needle should correspond to the weight of the leather being used. A heavier needle (e.g., sizes 18-22) is suitable for thick leather, while a lighter needle (sizes 14-16) works better for thinner varieties.
Additionally, FIBC sewing machines often incorporate multi-directional stitching capabilities, which enhance the bag's structural integrity. The ability to sew both straight and curved lines is particularly beneficial when creating FIBC designs that require reinforced corners or custom shapes. This versatility not only increases production efficiency but also allows manufacturers to cater to specific client requirements.
fibc sewing machine head

2. Preparing the Leather