To achieve a stable, repeatable, and high-quality impulse sealing process, both technical calculation and practical validation are required.
This is why the combination of a technical questionnaire and sealing tests provides the most reliable results.
What the Questionnaire Provides
The questionnaire collects all relevant technical data about the application, such as:
- Sealing band type, geometry, and active length
- Electrical installation and transformer configuration
- Cycle time, heating time, and duty cycle
- Number of sealing jaws and wiring layout
- Material type and thickness
Based on this information, the system can be calculated and dimensioned correctly:
- Correct transformer size, VA rating, and secondary voltage taps
- Proper controller selection and configuration
- Required power, current levels, and protection components
- Grounding and safety compliance
The questionnaire ensures that the system is technically correct, safe, and electrically suitable for the application.
What Sealing Tests Add
Sealing tests are carried out using the actual sealing tool and packaging material under realistic production conditions.
They are used to:
- Identify the optimal sealing temperature window
- Determine the correct sealing time and pressure
- Evaluate cooling behavior and release temperature
- Assess seal strength, appearance, and consistency
Sealing tests reveal how the material behaves in practice – something that cannot be fully predicted by calculations alone.
Why the Combination Is the Best Approach
- The questionnaire defines what is technically possible
- Sealing tests define what is optimal for the material
- Calculations ensure correct system design
- Tests ensure correct process parameters
Used together, they eliminate guesswork and reduce trial-and-error during commissioning.
The Result: Correct Parameters from the Start
By combining questionnaire data with sealing tests, you achieve:
- Stable and repeatable sealing results
- Optimized process parameters matched to the material
- Faster commissioning and fewer adjustments
- Reduced risk of weak seals, material damage, or overheating
- Documented and reproducible settings for production
The Vinther & Strand Approach
Reliable heat sealing starts with a clear understanding of how material behaviour and process parameters interact in real production conditions. That is why testing is an integral part of our application work.
We focus on defining the right sealing technology, system configuration, and process parameters to match each customer’s performance requirements—ensuring consistent seal quality, reduced scrap, and a stable, production-ready sealing process from day one.