DIODE PUMPED YTTERBIUM FIBER LASER MARKING PROCESS PARAMETER IMPACT ON MARK QUALITY OF POLIVINILCHLORIDE (PVC) MATERIAL

Abstract

Laser technology is undergoing unbelievably rapid expansion. A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. Nowadays laser cuts many different materials, including wide range of plastics and plastic material products. PVC plastic materials, is relatively light, cheap and durable material. Plastics it’s self is also recyclable and recoverable materials. Polyvinylchloride plastics is widely used in manufacturing of wide range of plastic details, pipes, toys, credit cards, window frames, interior and exterior facades and decorations. Laser marking of PVC plastics can be used to provide application of various symbols, such as part numbers, barcodes, instructions and graphic picture on the surface of PVC plastic objects. To reach the necessary quality of marked symbols and smooth surface of PVC detail, is necessary to choose the appropriate power and speed of laser marking process.The aim of this work is to relate the mark quality parameters and the operating process parameters. The research was conducted in the period of time from March 2016 till April 2016, in the Rēzekne Academy of Technology, Laser Technology center.