Heat seal testing

Heat seal testing Heat seal testing is carried out to verify and optimise sealing processes under production-relevant and controlled conditions. Materials are evaluated using controlled and repeatable test setups, enabling precise analysis of how they respond to temperature, pressure, time and cooling. Testing goes beyond theoretical calculations. By working directly with the material in practice, […]

The Best Way to Define Correct Sealing Parameters

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, […]

Sealing Principle with Different Bands

Selecting the correct heat sealing band is essential for achieving stable, efficient and repeatable impulse sealing.The sealing band defines how heat is stored, transferred and released into the material and therefore directly influences seal quality, cycle time and production rate. Correct band selection ensures: Reliable seal strength Short and controllable heating cycles Efficient cooling Stable […]

Constant Heat-Sealing

Constant Heat Sealing  Constant heat sealing is a sealing method where the sealing bars are kept hot all the time. When the machine is running, the bars stay at a fixed temperature.Sealing is made when the bars close and apply heat, pressure, and time to the packaging material. Because the bars are always hot, heating […]

Impulse Heat Sealing

Impulse Heat Sealing Impulse heat sealing is a process in which the heating cycle is synchronised with the machine rhythm. Each sealing cycle consists of a controlled heating phase followed by a cooling phase while the sealing bars remain closed. Cooling with the bars closed ensures that the seal has already set and achieved sufficient […]

Parameters for Heat-Sealing

Mutual dependence between parameters and material Heat sealing is not defined by a single setting, but by the mutual dependence between temperature,sealing force, time, cooling and material properties. The five factors are inseparably linked. Changing one parameter will affect the entire sealing process: A change in material often requires adjustment of all process parameters Increasing temperature may allow […]