Semiautomatic One-side Sewing Line For Cement Bag Machine+Heat Sealer
A high-efficiency semiautomatic line combining one-side sewing with a dedicated Heat Sealer for robust, bottom-sewn open-mouth bags. Features advanced vacuum feeding and comprehensive detection systems for superior quality control.

Fixed Bag Length, High Efficiency and Labor Saving
This semi-automatic production line is specifically designed for producing bottom-sewn open bags, ideal for packaging flour, sugar, fertilizer, and chemical materials. It integrates multiple systems to maximize automation and minimize defects.
The system features an advanced vacuum feeder to automatically pick up tubing without manual intervention. Equipped with a high-precision double-tubing detector, it alerts operators if materials are stuck, preventing feeding errors. Bag sizes can be quickly adjusted using a simple handwheel operation.
Precision Valve Forming and Sewing
- Defect Minimization: Special components ensure accuracy of each valve to minimize the defective rate.
- Quality Assurance: A dedicated detector senses and sorts out defective tubes for proactive quality control.
- Simultaneous Sewing: Installed two sewing heads on both sides to sew bag ends simultaneously for maximum efficiency.
- Material Alarm: Automated detectors warn operators when thread or paper tape runs out, ensuring continuous operation.
- Counting & Stacking: The counting conveyor allows for neat stacking and quantity setting for easy bundle packing.
Technical Specifications – One-Side Sewing + Heat Sealer
| Specification Item | Value |
|---|---|
| Specifications Model | ONE-SIDE SEWING MACHINE + HEAT SEALER |
| Capacity* (bags/min.) | Max. 55 bags/min. |
| Tube Length (TL) | 597 ~ 1,050 mm |
| Tube Width (TW) | 317 ~ 533 mm |
| Gusset Width (GW) | Max. 200 mm |
| Stitch Range | 7 ~ 12 mm |
| Number of Ply | Up to 6 Plies |
| Machine Dimension (L*W*H) | Approx. L4.8 X W1.7 X H2.0 m |
| Net Weight (ton) | Approx. 3.75 tons |
| Gross Weight (ton) | Approx. 4.2 tons |
| Measurement (cft) | Approx. 200 cft |
Upgrade Your Bag Production with Heat Sealing
Enhance the integrity and efficiency of your bottom-sewn bags. Contact Juang Ju Machinery today for a consultation on the Semiautomatic Sewing Line + Heat Sealer!

