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Hot Embossing by Matthias Worgull

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3.4. Molecular Orientation and Relaxation

Based on flow, the macromolecules of polymers undergo shear and orientation in the flow direction. The orientation of the molecules can remain by cooling in a short time—the orientation can be frozen. Orientations are responsible for the material behavior in the solid state, so the knowledge of their generation and their reduction via relaxation and retardation is essential.

3.4.1. Orientation

During flow or during embossing, the macromolecules of the polymers are oriented. This orientation can be defined as an imposed formation. This formation is based on the energy generated by the molding process. In this formation, the oriented molecules are characterized by a lower entropy and would like to go ...

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