In the IML process, cut-to-size printed plastic films, the labels, are precisely inserted into the injection mould by a handling device. By applying a vacuum or static charge, the labels are fixed and then back-injected with plastic. Using heat and pressure, the carrier films, which are precisely matched to the plastic, are welded to the melt in the filling and holding pressure phase to form a final product. Nowadays, this technique is often combined with stack moulds in order to increase output while maintaining reproducibility and quality.
- Printing and trimming of labels to final size by label supplier (external)
- Pick up and insertion into the mould area via handling device
- Transfer and fixation (vacuum, static) in the cavity area
- Back injection of the inserted label in the mould
- Removal of the finished part with simultaneous insertion of a new label