The only adaptation that demonstrates explicitly the advantage
of facilitating the introduction of new products (L) is the
e-kanban. In addition, it is theoretically possible to implement
an e-kanban interacting with any other adaptation using the
advantages of both proposals. No paper has so far dealt specifically
with the adaptation of the kanban system for production systems
with high setup times, a characteristic that also presents itself as
an obstacle to the use of the original system. However, in some
Japanese companies, originally there is the so-called signal
kanban, which is specifically used for the batch production with
high setup time. Also, several tools have been developed to reduce
these times as Single-Minute Exchange of Die (SMED) by Shingo
(1985), so this condition is not totally immutable; on the other
hand, this difficulty remains as an open field for future research.
Of the 23 theoretically developed variations studied, all of
them were developed focusing on offering, among other advantages,
a better performance than the original system in environments
characterized by unstable demands and processing times.
On the other hand, for the variations that had practical
development, unstable demands, and processing times correspond
to less than half of the total. Hence, it can be concluded that