overlock & chain stitch sewing machine

Lock stitch is one of the most fundamental and widely used types of stitches in sewing, providing both strength and durability in various textiles. This article delves into the workings of lock stitch on sewing machines, its applications, and its significance in the world of sewing.

The single needle top stitch is characterized by the use of a single needle and a straight stitch, typically sewn on the top layer of fabric. This method differs from other sewing techniques that might use a double needle or decorative stitches. The singularity and precision of the single needle allow for clean lines and crisp finishes. It is commonly employed in a variety of sewing projects, ranging from apparel to home décor.

When it comes to sewing with a double needle, there are a few essential tips to keep in mind. First, it's crucial to use the right needle size and type. Typically, a 75/11 or 90/14 ballpoint double needle is recommended for sewing knits, as it helps prevent fabric damage. Additionally, you’ll need to select a thread that is suitable for the type of fabric you’re working with, which often means using a polyester or nylon thread for its strength and stretchability.

Another remarkable benefit is consistency. When sealing bags by hand, variability is common; some bags may be tightly sealed while others are not, leading to potential product spoilage or leakage. Handheld bag closers ensure uniformity in sealing, which is crucial for maintaining product quality and extending shelf life, especially in the food industry.