The invention discloses a preparation method of a bio-based
composite material sheet and a plastic suction tray manufactured by the sheet, and belongs to the technical field of preparation of the bio-based
composite material sheet and the plastic suction tray prepared by the sheet. The sheet disclosed by invention consists of three
layers of resin with different components from inside to outside;sheet
extrusion equipment consists of three extruding machines,
control equipment, a sheet
extrusion machine head and a temperature controlling
system; and the phenomenon that the sheet product has strict thickness and is high in glossiness according to practical demands; the overall thickness of the sheet product can be adjusted in the range of 0.3mm to 2mm, wherein the thickness of an outer layer is 0.05mm to 0.5mm, occupying 5 percent to 15 percent of the total
mass; the thickness of an inner layer is 0.05mm to 0.2mm, occupying 3 percent to 10 percent of the total
mass; and the thickness ofa middle layer is 0.2mm to 2mm, occupying 70 percent to 90 percent of the total
mass. The degradable sheet applied to the plastic suction tray provided by the invention has the advantages of being high in
water resistance, high in
moisture resistance, high in
bacteria resistance and
insect prevention property, reliable in strength, exquisite in appearance, and high in cleanness and environment protection properties, and has the ability to control degradation, and meanwhile, the sheet is low in cost, is convenient to process, and is suitable for mass industrial production.