The invention discloses a
dimple-shaped
honeycomb hollow plate and a manufacturing method thereof, belonging to a manufacturing method of a multiplayer co-extruded molding hollow plate. The
dimple-shaped
honeycomb hollow plate is characterized in that an internal structure of the
dimple-shaped
honeycomb hollow plate comprises the following components in percentage by weight: 60-80 percent of
polypropylene, 5-15 percent of talcum
powder, 1-10 percent of
polyethylene, 0.5-2.5 percent of aliphatic ester, 0.5-2.5 percent of
calcium carbonate, 1-10 percent of
titanium dioxide, 1-10 percent of aluminum
oxide and 10-20 percent of
glass fiber. The dimple-shaped honeycomb hollow plate is of a sandwich structure and structurally comprises an
extrusion molding surface panel at the upper layer, a dimple-shaped
honeycomb structure layer as a middle core layer and an
extrusion molding surface panel at the lower layer. The manufacturing method of the dimple-shaped honeycomb hollow plate comprises the following steps: proportioning and mixing raw materials; plastifying and pelleting; extruding the
extrusion molding surface panels at the upper layer and the lower layer by an extruder, and extruding a dimple-shaped
honeycomb structure layer (formed by means of a vacuum plastic suction roller) by the extruder, performing
corona treatment, performing hot-press and hot-melting splicing, annealing by a stress removing box, shaping and
sizing by five rollers, cooling by an
air cooling frame, forming and
cutting to manufacture the dimple-shaped honeycomb hollow plate.