single thread sewing bag closer machines in Kampala Uganda Single-Thread Chain Stitch: These machines create a single-thread chain stitch, which involves interlocking loops formed by a single thread. The chain stitch provides a strong and secure closure for bags, minimizing the risk of traveling or opening during transportation or storage. Portable Design: Single thread sewing bag closer machines are often designed to be portable and lightweight. They may have a compact size, handles, or straps, allowing for easy transportation and flexibility in various work environments.