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Hot Embossing by Matthias Worgull

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6.4. Process Analysis

The aim of this section is to analyze every process step of hot embossing and to present the characteristic correlations based on simulation results.

6.4.1. The Process Step of Heating

The process step of heating is characterized by heat transfer from the heating system to the polymer foil. Besides the heat transfer over different contact areas, the heat flow inside the material also determines the heating rate.

Regarding the basic correlations of heat transition and heat conduction, the main influence factors can be deduced.

The stationary heat flow determined by heat conduction is characterized by Fourier's law:(6.23)where jq is the heat flux density, λ is the coefficient of thermal conduction, n is the direction ...

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