Functional plastic film as well as preparation method and application thereof

The invention provides a functional plastic film as well as a preparation method and application thereof. The functional plastic film comprises a functional layer, a first outer layer, a middle layer, a second outer layer and a bonding layer which are sequentially arranged from top to bottom, wherein the functional layer comprises adhesive resin, the first outer layer and the second outer layer independently comprise polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol ester, and the middle layer comprises non-crystallized polyethylene glycol terephthalate. The functional plastic film prepared by the invention is high in hardness, adjustable in transmittance, simple in preparation process and simple in film forming process, and has important significance for developing research on decorative materials and further expanding processing processes of high polymer materials. 本发明提供了一种功能塑料膜及其制备方法和应用。本发明的功能塑料膜，包括从上至下依次设置的功能层、第一外层、中间层、第二外层和粘结层；其中，所述功能层包含胶粘树脂，所述第一外层和第二外层独立地包含聚对苯二甲酸乙二醇酯-1,4-环己烷二甲醇酯，所述中间层包含非结晶化聚对