The gapless side guard (25) has a continuous strip (50) of flexible material for retaining materials being transported on the modular belt (20).

The effect of profiled aluminum quality on different design methods have been studied according to the design of profiled aluminum die diffluence hole, lead flow strip working belt and wayout belt.

The strip (50) is flexible such that when the modular belt (20) is driven over a sprocket it is capable of elongating as the distance between the brackets (70) increases.