01
The seam must be continuous and its airtightness controllable
The machine must produce a consistent seam along the film’s direction of travel. For products required to retain air, welded samples must be tested under actual operating conditions.
Designed and manufactured around real production requirements
Continuous-seam ultrasonic welding machine manufactured by VietSonic
A solution for businesses that need continuous welding on plastic film, controlled seam airtightness, and stable integration of the welding process into their production lines.
Businesses need a weld seam matched to the material they actually process
When plastic film runs continuously, weld quality depends on more than machine power. Material type, number of layers, seam width, pressing force, feed speed, and airtightness requirements must be considered together. That is why VietSonic starts with actual samples and the customer’s production objectives before finalizing the machine configuration.
02
Speed must be supported by stability
Higher speed is only effective when the material is guided steadily, the welding assembly maintains proper contact, and the seam remains uninterrupted throughout operation.
03
The machine must fit the existing production line
Machine dimensions, film feed direction, synchronization speed, operating position, and signal interface must be configured for the customer’s production layout and process.
The video shows direct welding on plastic film and post-weld sample testing
The machine combines ultrasonic vibration with pressing force at the contact area to form a weld seam while the material moves continuously. The VietSonic video records both the welding process and an underwater load test used to observe the sample’s ability to retain air.
- The machine operates on an actual plastic film sample.
- A continuous seam is formed along the material’s direction of travel.
- The welded sample is load-tested to evaluate airtightness.
- Parameters can be adjusted for the material and required output.
VietSonic develops each machine from sample testing to factory operation
Our manufacturing capability is demonstrated by turning each customer’s requirements into a machine configuration that can be operated, tested, and fine-tuned.
Receive samples and define output requirements
The customer provides the film type, thickness, number of layers, weld width, target speed, and sample acceptance criteria.
Conduct weld trials and determine the process window
VietSonic tests the sample to assess weldability, then adjusts energy, pressing force, and speed to suit the application.
Design the mechanical and ultrasonic assemblies
The welding assembly, guiding mechanism, machine table, and controls are arranged according to the product, material direction, and integration point.
Trial run, commissioning, and technical support
The machine is trial-run with the customer’s sample, supplied with operating instructions, and further adjusted when required by actual production conditions.
20 kHz
Ultrasonic system frequency shown in the video
Ultrasonic system frequency shown in the video
2,000 W
Power rating stated in the video
Power rating stated in the video
Up to 30 m/min
Potential speed stated in the video description
Potential speed stated in the video description
Technical note: 30 m/min is a potential speed for the configuration shown in the video, not a guaranteed speed for every material. Production speed must be confirmed through sample testing and specific quality criteria.
Watch the continuous-seam ultrasonic welding machine in operation
The video allows businesses to directly observe how the machine welds plastic film and how samples are tested after welding before discussing a machine configuration for their products.
Actual operation video: continuous welding on plastic film and an underwater load test.
Production requirements suitable for sample testing
Application feasibility must be determined for each specific material. Businesses should submit samples when facing one of the following requirements.
Continuous longitudinal welding on plastic film
Suitable for evaluation when the product requires a long weld seam, consistent seam width, and a continuous film-feeding process.
Products requiring airtightness control
Samples required to retain air or limit leakage should be tested using the load, duration, and test environment applied by the customer.
Integration into an operating production line
VietSonic can assess the feed direction, control signals, synchronization speed, and installation space before beginning the design.
For an accurate application assessment, businesses only need to provide a material sample, weld dimensions, target speed, and test criteria. VietSonic will discuss the test plan before finalizing the machine configuration.
Questions businesses commonly need answered before investing
Which types of plastic film can be ultrasonically welded?
Weldability depends on material composition, film structure, thickness, and number of layers. The most reliable way to confirm suitability is to test the actual sample used by the customer.
Can every product run at 30 m/min?
No. This is a potential speed for the machine shown in the video. Actual speed must be confirmed according to the material, weld width, pressing force, and the required airtightness or bond strength.
Can the machine be integrated into an existing production line?
An integration solution can be assessed. The customer should provide the film direction, line speed, control signals, installation layout, and operating requirements so that a suitable interface can be designed.
What information is needed for accurate consultation and quotation?
Please provide a material sample, thickness, number of layers, weld dimensions, target speed, photos of the existing production line, and the customer’s current method for inspecting welded products.
Send your sample to VietSonic for a continuous-welding assessment
Discuss the material, speed, airtightness, and machine integration directly with our technical team. The more specific the information, the more closely the test plan and proposed configuration can match your production line.