The invention relates to a method for preparing a plastic tray from a three-layer
composite film recycled material serving as a basic
raw material. The method comprises the following steps of: taking 87 to 92 weight parts of three-layer
composite film recycled material, 6 to 10 weight parts of
butyl acrylate grafted linear low-density
polyethylene (LLDPE-g-BA), 0.6 to 1.0 weight part of
tris-(2,4-di-tert-butyl-pheny)phosphite, 0.4 to 0.7 weight part of
tris(1,2,2,6,6-pentamethyl-4-
piperidine)phosphite, 0.5 to 0.8 weight part of
rutile type
titanium dioxide and 0.3 to 0.5 weight part of
phthalocyanine green, and performing crushing,
drying, mixing,
extrusion and injection molding. Compared with a wooden tray, the plastic tray prepared by the method has the characteristics of high compression strength, high stretchability, acid and alkali resistance, capacity of being easily washed and disinfected, no
mildew and the like, and is suitable for the industries of machines,
electronics, foods, clothing and the like.