The hopper mechanism is completely mechanical, so the stability is very high compared to the electronics hopper. The hopper is a pyramids structure where a slot is provided in the bottom center, for the flow of the food powder. Beneath the hole in hopper a sliding plate is placed for opening and closing of the hole so whenever the sliding plate moves food power drops from the hole to the packet. After the weight reaches a particular level the plate closes automatically. This is done by a spring mechanism according to the stiffness of the spring. The spring is attached to a plate where the food powder falls in. When the weight of the food powder exceeds the stiffness of the spring then the plate connected with spring moves up. So the sliding plate covers the hole so that the flow of food powder has been stopped. Then the powder food product flows in a packing bag so that each packet can be sealed using a sealing machine.