This model is available in single-needle two-thread and double-needle four-thread versions.
The GK20-9 Bag Sewing Machine is a new and efficient bag-making sewing machine. It adopts a single straight needle, rod-type thread take-up mechanism, and looper to form a two-thread chain stitch. The stitches are strong, neat, and flexible. The machine features a closed semi-automatic lubrication system and an upper-and-lower synchronized feeding mechanism, ensuring stable feeding and uniform stitch length. It helps prevent quality problems such as bag damage, deviation, and uneven stitch spacing caused by feed-dog slippage during sewing. The machine offers durability, long service life, high operating speed, large stitch length, low energy consumption, low noise, and easy maintenance. It is suitable for sealing cloth bags, plastic woven bags, paper bags, and other packaging bags used in industries such as cement, grain, and sugar.
The double-needle four-thread model is designed for sealing plastic woven bags, burlap sacks, cloth bags, and other packaging bags filled with powdered or granular materials in industries such as grain, chemicals, feed, flour, seeds, sugar, ports, and terminals. Its strong and neat stitching provides reliable sealing with reduced leakage, making it suitable for long-distance transportation. The machine can be installed on different types of conveyors for use in automated packaging lines.
The machine adopts rolling bearings, copper-alloy bushings, and connecting rods. Its lubrication system uses an oil cup with felt oil storage and seepage lubrication. It also features semi-automatic mechanical thread cutting, high sewing speed, low noise, easy maintenance, and long service life.
Brand | QINGFENG |
Model | GK20-9 |
Motor Speed | 1500–1800 rpm |
Stitch Length | 8–15 mm |
Needle Model | GK27-230# |
Motor Power | 370 W |
Dimensions | 340 × 230 × 400 mm |
Weight | 24.5 kg |