Active Layer - TPC - DuPont

Kunststoffe international, 2005-11-21, Laser Labelling: Emission-free Labelling of Colour Films
...oup GmbH & Co. KG, can be labelled emission-free. The process takes place within the material compound. The laser beam penetrates the transparent laminate particularly developed for this purpose, without damaging it. Energy is absorbed in the laser-active layer, where it excites a physical-chemical reaction, so that a subjacent layer is revealed (Fig. 1). With this method, the finest contours and characters can be rendered precisely and sharply at high speed and with only minor energy consumptio...

Kunststoffe international, 2008-02-29, Writing under the Surface
...ing it from opaque to clear wherever the laser hits the film. To make this possible, the CLF has a modular structure (Fig. 1). The laser beam first penetrates a transparent laminate layer without causing any damage to it reaching the laser-active layer below. The laser-active layer absorbs the energy. This induces a reaction converting the opaque laser-active layer to transparent wherever the laser hits the film thus making the underlying colored layer visible. Schreiner produces CLF with a cust...

Kunststoffe international, 2020-02-12, A Varied Menu
..., which heats the airflow to up to 650 °C, and thereby heats the layer by convection. The air heater is installed in a hybrid manufacturing cell, consisting of a screw extruder and a six-axis robot, and is combined with active layer cooling, which has a beneficial influence on the dimensional stability (Fig. 1). In blown film extrusion, the melt throughput, and thus the productivity, are highly dependent on the degree of heat extraction from the tubular film. Another highly promising topic on th...