In applied areas like engineering, a year or two of industrial experience will not hurt your CV -- but it certainly will not beisn't a key item therenecessary requirement.
In pure sciences (mathematics, physics, astronomy), this may be more like waste of time.
No rule is without exceptions, of course. If you spend a year or twosome time at a research unit of some highly advanced and renown company -- then this may look good in the eyes of the people from academia. But then, again, this is likely to happen in applied areas. The general rule, however, is simple (at least in the West): if you are building an academic career, then stay in academia and don't leave.