The present invention provides a biodegradable grating sheet, an article thereof and a preparation method thereof. The preparation method comprises the following steps: 1) drying the biodegradable polymer or modified substance thereof at 50–120°C; 2) extruding the dried biodegradable polymer or modified substance thereof into a sheet by an extruder at 120–250°C, wherein the front surface of the sheet is provided with a uniform lens array with the same surface curvature, and the sheet becomes a biodegradable grating sheet after cooling and shaping. The method for preparing a biodegradable article with stereoscopic images comprises the following steps: 1) making a grating sheet with stereoscopic vision images from the biodegradable grating sheet; 2) manufacturing an article with stereoscopic images. The biodegradable grating sheet and the article thereof according to the present invention can be completely decomposed into water and carbon dioxide in the natural environment, which are harmless to the environment.
Country Code: CN
Application Number: WO2006CN01646
