Precision. Automation. Intelligence.
In the chemical, feed, and food packaging industries, the 25kg heavy-duty bag remains the most widely used packaging format. The automation and precision of its production process directly determine manufacturing efficiency, product quality, and overall cost. Among all steps, welding the one-way degassing valve onto the bag is critical to ensure airtightness, proper venting, and stack stability.
Traditional manual or semi-automatic methods often suffer from low efficiency, positioning errors, inconsistent pressure, and time-consuming changeovers — making them unsuitable for modern, high-volume production.
To solve these industry-wide challenges, our company — backed by strong R&D capabilities and patented technology — proudly introduces the Fully Automatic Valve Applicator Machine for 25kg Heavy-Duty Bags.
This intelligent 25kg heavy-duty bag valve applicator machine is specifically engineered for welding one-way degassing valves onto heavy-duty bags. It integrates seven core advantages: full automation, micron-level precision, strong stability, and easy management. It delivers a turnkey, high-efficiency valve applicator solution that upgrades your entire heavy-duty bag packaging line.

1. Fully Automated Workflow – Maximize Efficiency, Minimize Labor
This 25kg bag valve applicator enables unattended operation from valve feeding to bag handling, eliminating the inefficiencies of manual processes.
- Automatic Valve Feeding System: Intelligently conveys and accurately positions valves without manual intervention. This solves problems such as low manual efficiency, operator fatigue, and placement errors, significantly reducing labor costs while supporting high-volume continuous production.
- Servo Robotic Bag Gripping: A high-precision servo-driven robotic arm automatically picks, positions, and transfers bags with smooth, accurate motion. It eliminates positional errors associated with manual bag loading, ensuring perfect alignment between the bag and valve — laying the foundation for subsequent high-precision application.
2. Micron-Level Precision Valve Application – Zero-Defect Quality
Designed for thick, tough heavy-duty bag materials, this heavy-duty bag valve applicator machine incorporates premium servo and sensing technologies for extreme accuracy.
- High-Precision Servo Motor Drive: The core valve application action is controlled by a high-performance servo motor, with stroke accuracy controlled within 0.02mm. Every degassing valve is welded at the preset micron-level position, eliminating poor-quality welds.
- Real-Time Closed-Loop Pressure Feedback: A high-precision pressure sensor continuously monitors and dynamically adjusts application force. The system automatically compensates based on feedback data, ensuring a strong, leak-proof, non-detaching weld between the valve seat and the bag. It simultaneously prevents damage from excessive pressure or weak welds from insufficient pressure — perfectly balancing strength and integrity.

3. Intelligent Digital Control – Fast Changeovers, Flexible Production
To meet the growing trend of high-mix, low-volume flexible production, this 25kg heavy-duty bag fully automatic valve applicator features intelligent design for efficient management and rapid changeovers.
- Touchscreen Digital Parameter Setting: An industrial-grade high-definition touchscreen allows intuitive digital input of all application parameters (position, depth, force, etc.). Easy to learn and operate — even for new users — with all settings clearly displayed.
- Recipe Storage & Management: A powerful built-in recipe memory function enables pre-storing of application parameters for different bag sizes and materials. When switching production lines, simply recall the corresponding recipe with one touch to complete parameter setup instantly, drastically reducing changeover time and increasing line flexibility.
4. Industrial Connectivity – Data-Driven Smart Management
Aligned with Industry 4.0 trends, this valve applicator for 25kg heavy-duty bags offers comprehensive information integration capabilities to help you build a smart factory.
- MES System Interface Ready: Standard production data interfaces are pre-configured for seamless connection to your MES (Manufacturing Execution System). Real-time upload and remote monitoring of machine status, production output, pass rate, and process parameters are readily available.
- Full Traceability: Supports production data recording and traceability, facilitating quality control, efficiency analysis, and capacity optimization — providing powerful data support for digital management and lean manufacturing.
Application Value – The Ideal Choice for Heavy-Duty Bag Valve Application
This patented 25kg heavy-duty bag valve applicator machine is more than just equipment — it is a complete, high-efficiency, precision, and intelligent valve application solution. It is widely applicable to chemical raw material bags, plastic pellet bags, feed bags, food additive bags, and various other 25kg heavy-duty bag products.
By adopting this machine, your company can achieve:
- Significantly Reduced Labor Costs: Fully automated process minimizes manual dependence; one operator can manage multiple machines.
- Substantially Improved Product Quality: Micron-level precision and closed-loop control ensure near-100% qualification, eliminating air leaks and valve detachment.
- Greatly Increased Production Efficiency: Continuous, stable operation with fast changeovers effectively raises output per unit of time.
- Comprehensive Management Upgrades: Data and information integration enables transparent, traceable production processes.
For optimal welding results, we recommend pairing this machine with our H6 and H8 series one-way degassing valves — both engineered for consistent performance with automatic valve applicator systems.

Looking Ahead
As industrial packaging demands ever-higher levels of automation and intelligence, the Fully Automatic Valve Applicator Machine for 25kg Heavy-Duty Bags — with its patented technology and outstanding performance — will become the preferred choice for enterprises in chemical, feed, food, and related industries looking to upgrade production lines and enhance core competitiveness. It empowers your business to gain an edge in fierce markets and move toward a new era of efficient, precise, and intelligent modern manufacturing.
Contact us (info@sunbown.com) today to learn how our 25kg heavy-duty bag valve applicator machine can transform your packaging line.