Patent ID: 9421642
Filing Date: 2016-08-23
CPC Classification: A61J,B23K,B26D,B29C

Claim Text:
1. Process for cutting plastic products for use in the medical sector provided in a continuous band comprising the following steps: a) providing interconnected plastic products embedded in a continuous band of plastic, consisting of segments to be laser cut, the continuous band of plastic including a plurality of markings, b) determining positional data for the interconnected plastic products embedded in the continuous band of plastic and for the plurality of markings from the continuous band of plastic through an optical acquisition unit and comparing the determined positional data to stored positional reference data within a data processing unit to ascertain differences between the determined positional data and the stored positional reference data, and calculating a cutting pattern based on the determined plurality of markings, the determined positional data, and the ascertained differences between the determined positional data and the stored positional reference data with the data processing unit, c) controlling at least one laser with a laser control system comprising a controllable focusing optic, a controllable deflection means and a beam-forming means, wherein in dependence on the calculated cutting pattern, a position and intensity of a focal point of the at least one laser is controlled, and d) cutting, with the at least one laser the interconnected plastic products provided in the continuous band of plastic, as the interconnected plastic products cool down, according to the calculated cutting pattern, by detecting, with the optical acquisition unit, differences in size of the plastic products due to a shrinking process of the segments to be laser cut, wherein the shrinking process is caused by cooling down and adjusting the at least one laser to cut the plastic products during the shrinking process caused by the cooling down.