Full-biodegradable card-based material and preparation process thereof

The invention discloses a full-biodegradable card-based material and a preparation process thereof, and relates to the technical field of card-based material preparation, the full-biodegradable card-based material comprises a base, a first flattening assembly and a second flattening assembly, and the first flattening assembly is arranged at the front end of the top of the base. When a card base material is stacked between the two first grinding rollers, thrust in the direction of the first grinding rollers can be generated, when the first grinding rollers are subjected to the thrust, a little displacement can be generated, a reset spring between the first grinding rollers and the butt-joint pile is deformed, after the reset spring is deformed, the concentric state of the butt-joint pile and the first grinding rollers is changed into an eccentric state, and the butt-joint pile is prevented from falling off. According to the technical scheme of the utility model, the tension sensor is arranged on the machine bo