“There are three different options on how to time the production lines.[…] The “easiest” one is an unstructured approach. The processes are still arranged in sequence; however, there is no fixed signal when to start processing a part. The pulse line is also a flow line, but now all parts move at the same time. […] When all processes are done, all parts move to the next process simultaneously. […] Another common way to structure the timing of flow lines is the continuously moving line.”
Sourced through All About Lean
Michel Baudin‘s comments: Christoph’s two posts are great for their rifle-shot focus on the single issue of flow line pacing and for their effective use of animation to illustrate principles. It makes the differences clear in a way you couldn’t on paper.