INSTITUTO POLITÉCNICO NACIONAL - ipn-upiicsa, sepi - Instituto ...

Summary
Nowadays before the entrance of international competitors who offer goods and
services to the smaller price, with high reduced time and quality levels of delivery; the
Mexican companies require applying competitive strategies whose differentiating
element, of the rest of the competition, is the quality of their products and services and
are oriented to the satisfaction of the client. In order to obtain the previous thing, they
are an ample variety of techniques oriented to the optimization of the processes,
between which is Six Sigma (SS).
One of the advantages of SS with respect to other techniques is that it
emphasizes the use of statistical tools that allow measuring the present situation of the
process to improve it. In this way, it is possible to reduce defects, to diminish the time
cycle and like turn out to offer greater satisfaction to the client. Therefore, the
application of SS can be very useful for the Mexican companies that they look for to
reduce the defects, to increase his capacity to fulfill the specifications of the client and to
optimize his processes, reason for study of the present proposal.
The intention of the present investigation is the application of Six Sigma in a
lithographical company to solve a problem related to the quality of the process of Offset
impression and therefore, to diminish the number of defects in a product that generates
a high percentage in the sales for the company under study. The previous thing,
through an approach oriented in the statistical analysis of the processes.
From the previous thing, one demonstrates that the application of SS not only
can be applied in great international partnerships, but also can adapt to lithographical
means companies so large, small and big, because the application of SS non demand
of great investments, already that are only required of the analysis of the process and of
the factors that influence the variables quality critics to understand and to reduce the
variation. If it is certain well that in all proposal of improvement a cost related to the
experimentation stage exists, also is it that the investment recovers in short time and
that the gains generated by the reduction of reprocesos are translated in the diminution
of costs of producing defects.
Finally, throughout the present investigation emphasis in the combination is
made of the statistical thought with the experience of the people in charge of the
process, since without doubt any improvement or redefinition of the work methods is
impossible if they do not consider the people.