Ultrasonic Cross-Sealing Machine for Desiccant Bags – Consistent Seals for Industrial Production
This solution is designed by VietSonic based on the material properties, bag dimensions, seal pattern, and actual operating requirements. The system shown in the video uses a 20 kHz, 1,500 W ultrasonic generator, a pneumatic cylinder mechanism, and tooling that creates a three-rib seal.
Practical Challenges in Cross-Sealing Desiccant Bags
During desiccant bag production, manufacturers must simultaneously control seal integrity, consistency, and appearance. Even one unsuitable setting can lead to unstable seals, distorted bag edges, or products that require rework.
A suitable sealing station should meet the following requirements:
- Consistent, repeatable seals across multiple production cycles.
- Controlled pressure appropriate for the bag structure.
- Accurate tooling alignment to minimize product shifting.
- Easy adjustment when materials, dimensions, or seal requirements change.
- A structure designed for convenient operation, cleaning, and maintenance in the factory.
VietSonic’s Solution Design and Manufacturing Capabilities
Every bag type has different material structures, dimensions, and seal standards. VietSonic develops each machine through a technical process tailored to the product sample and the manufacturer’s actual operating conditions.
Sample Evaluation
Examine the material, seal width, thickness, and finished-product requirements.
Configuration Selection
Determine the frequency, power, pressing mechanism, and sealing-station layout.
Tooling Design
Design the sonotrode and anvil surfaces to create the required seal pattern.
Manufacturing and Sample Testing
Assemble the equipment, conduct test runs, and adjust parameters using actual samples.
Technical Handover
Provide operating instructions, parameter setup guidance, and after-sales technical support.
System Specifications Shown in the Video
| Application | Cross-sealing desiccant bags |
|---|---|
| Ultrasonic frequency | 20 kHz |
| Generator power | 1,500 W |
| Equipment configuration | Multipurpose vertical welding machine |
| Force mechanism | Pneumatic cylinder |
| Seal design | Three parallel ribs |
The specifications above describe the configuration demonstrated in the video. Equipment supplied to each manufacturer will be reviewed according to the material, bag dimensions, production output, and actual inspection standards.
The Purpose of the Three-Rib Seal
The system tooling is designed to create three parallel sealing bands along the bag edge. This structure increases the bonding area and supports more consistent seal formation.
- Distributes the contact area across the seal width.
- Creates multiple parallel bonding bands along the bag edge.
- Produces a clearly defined seal that is easier to inspect visually.
- Allows the rib design to be customized to the product sample.
Final seal integrity and strength should be evaluated through sample testing because the results also depend on the material layers, thickness, pressure, and ultrasonic parameters.
Desiccant Bag Ultrasonic Welding Machine in Operation
The video shows the equipment, operating mechanism, and seal pattern implemented by VietSonic on an actual product.
Business Benefits of the Equipment
The solution is designed to support stable operation, quality control, and convenient integration into the production process.
Consistent Process Control
Tooling designed around the product sample helps maintain the position and shape of the seal across production cycles.
Fewer Auxiliary Steps
Ultrasonic bonding does not require additional adhesive at the seal, helping streamline the production process.
Product-Specific Adjustability
Operating parameters and tooling designs can be refined to suit the material, dimensions, and seal standards.
Responsive Technical Support
Designed and manufactured locally, the equipment is convenient to adjust, maintain, and retool.
Businesses Suited to This Solution
- Desiccant bag manufacturers and packaging companies.
- Technical packaging converters.
- Factories seeking to standardize their bag-edge sealing process.
- OEM manufacturers requiring equipment designed for their own samples.
- Businesses developing semi-automatic sealing stations or integrated production lines.
Information Required for Consultation
- Bag samples and material-structure information.
- Seal dimensions, width, and pattern.
- Required production output or target cycle time.
- Seal-integrity and visual-inspection criteria.
- Requirements for standalone operation or production-line integration.
Our Project Implementation Process
Receive requirements and bag samples
Analyze the material and seal
Propose the equipment configuration
Manufacture, test, and fine-tune
Handover and operating support
Frequently Asked Questions
Can the machine weld every type of desiccant bag?
Weldability depends on the material structure and thermoplastic properties. VietSonic must evaluate an actual sample before determining the appropriate configuration and parameters.
Can the seal width or pattern be changed?
The tooling can be designed according to the required width, number of ribs, and seal pattern after the product sample has been evaluated.
Can the equipment be integrated into an automated production line?
VietSonic can evaluate an option for integrating the ultrasonic station into a production line. The manufacturer should provide the required speed, control signals, installation space, and product infeed and outfeed process.
Send Us Your Bag Samples for Consultation and Testing
Manufacturers experiencing seal-integrity or consistency issues, or requiring a sealing station designed for their current process, can send samples to the VietSonic team for evaluation and a proposed solution.
Vietnam Ultrasonic Equipment Co., Ltd.
Email: info.vietsonic@gmail.com · Website: vietsonic.vn