Semi-automatic double-thread chain stitch bag sewing heads are used for closing filled sacks with stable and continuous stitching. Semi-automatic thread trimming improves operation efficiency, making them suitable for grain, chemical and port-related packaging operations.

Designed for sewing tasks that demand stronger seams, double-needle, four-thread chain stitch bag sewing heads provide reinforced closure for filled sacks used in grain, chemical and port-related operations. Semi-automatic thread trimming reduces manual effort for operators, making daily operation easier and more efficient.

Automatic bag sewing heads with single-needle, double-thread chain stitch are designed to reduce manual work during bag closing. They start and stop automatically and include an automatic trimming system that cuts both the thread chain and the paper tape with a clean 50 mm cut. This helps operators work faster and maintain a consistent finish.

Automatic bag sewing heads with a two-needle, four-thread chain stitch create two parallel stitch lines, giving the bag a tighter and more secure seal. This version is developed from the GK35-6A sewing head, but adds a reinforced stitching pattern that helps reduce material leakage and keeps the seam more even during long production runs.

Bag sewing heads equipped with a top-and-bottom feed mechanism and a single-needle, double-thread chain stitch offers better control when working with thicker or smoother bag materials. The design is based on the structure of the GK35-6A sewing head, but the added top-and-bottom feed helps pull heavy or slippery bags through the stitching area more steadily.

Continuous bag sewing heads with crepe tape cutters are built for packaging lines that run without stopping. As the bag moves forward, the conveyor chain holds the bag's mouth firmly in place so the stitching and crepe tape can be applied in one smooth motion. As the bag moves forward, the conveyor holds it steady enough for the stitches and crepe tape to be applied evenly, even when the line is running fast.

The high-speed bag sewing head works well with fast bagging lines that run at around 25 meters per minute and can handle different types of open-mouth bags. The built-in sealed oil chamber keeps the moving parts running smoothly, and the dust protection helps them wear more slowly.

Ideal for continuous bag closing on automated packaging lines, this high-speed bag sewing head offers a stable feeding method that keeps the bag firmly guided between the wheels until the stitching is completed. The seam stays secure throughout the process, and the bag does not slip away while the machine is running.