High Quality 4 Lane Biscuits Sandwiching Machine. Biscuit are fed by belr conveyor or bibratory chutes and magaine feeder. PLC and touch screen control. There are sensors to detect the feeding of bottom biscuit, if the bottom biscuit are not be detected, the pneumatic valve will block the cream, the machine will keep on running, once the bottom biscuits is detected, the pneumatic valve will release the cream again.