Multi-layer co-extrusion device for biodegradable mulching film

The utility model belongs to the technical field of blow molding machines, and discloses a multi-layer co-extrusion device for a biodegradable mulching film, which adopts the technical scheme that the multi-layer co-extrusion device comprises a vertical plate, and a first connecting part, a second connecting part, a third connecting part, a fourth connecting part and a fifth connecting part are arranged on one side of the vertical plate; internal thread rings are rotationally mounted on one side of the vertical plate, one side of the second connecting part, one side of the third connecting part, one side of the fourth connecting part and one side of the fifth connecting part correspondingly, through the device, the multiple connecting parts can be disassembled and assembled, when the additive biodegradable mulching film needs to be produced, the number of the flow channels can be rapidly and conveniently adjusted according to the types of materials needing to be added, and the production efficiency is improve