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“Proceedings of PPS-29 : The 29th International Conference of the Polymer Processing Society - Conference Papers. ISBN 978-0-7354-1227-9”To Assemble a complete subsystem as a rear lamp, is necessary to have different machines and to perform several tasks. Thisnecessity obliges the companies to have large structures to support all the assembling process. These huge structures are very costlyand have as a consequence the reduction of the competitiveness of the companies. The process presented in this document has theintention of reducing the number of tasks needed to produce the final subsystem/product. To achieve this goal were combinedseveral technologies, as in-mould assembling, laser welding and LEDs (light-emitting diode). One of the advantages of this processwas the utilization of only one injection molding machine with three injection units to do all the assembling process.To achieve the main objective, firstly, the rear lamp was designed according to with the legislation of UNECE Vehicle Regulations- 1958 Agreements; Regulation No. 50 -Rev.2 - Position lamps, stop lamps, direction indicators for motorcycles. Posterior severalpolymeric materials were studied at different levels. Initial were studied several concentrations of carbon nanotubes mixed with PC(polycarbonate). This had the objective of determine, if these materials are suitable to conduct the necessary electric current to turnon the different LEDs. One of the main advantages of this process is the use of the laser transmission welded process. Since, withthis welding technology is possible reduce the complexity of the final part. To understand the potentialities of this technology acombination of two materials was studied. The studied showed that all materials presented a high transparency to the laser beam. Interms of weld process, the study showed that the best welding conditions are the lowest velocity, diameter and power. With thesestudies was possible conclude that this new process is suitable to be implemented at the industrial level

In mold laser welding for high precision polymer based optical components