Implementation of hybrid parallel kanban-CONWIP system: A case study

Figures & data

Figure 1. Flow of the methodology.

Figure 2. Current state VSM of p.

Figure 3. Parallel kanban-CONWIP system of p.

Figure 4. (a) Kanban card design; (b) Kanban card with card compartment in place; and (c) Paint shop kanban board.

Figure 5. Subassembly SOP.

Table 1. Reduction/increment of kanban cards

Week	Subassembly	Paint shop	Final assembly	Total
1	10	6	6	22
2	9	7	5	21
3	8	8	4	20
4	7	9	4	19
5	6	8	4	16

Table 2. Lead time improvement of p

Period	Location
	Between inbound and in-jig	Between in-jig and out-jig	Between touch up and preparation 1	Between primer and preparation 2	Between touch up and final assembly	Between quality inspection and outbound
Before implementation	10 days	3.9 days	2.2 days	2.8 days	2.2 days	8.9 days
After implementation	5.6 days	1.1 days	2.2 days	2.2 days	2.2 days	9.4 days

Figure 6. Future state VSM of p.