The invention provides an
ultraviolet resistant
polyvinyl alcohol fruit bag film preparation formula and technology thereof, and the invention uses partial alcoholysis type
polyvinyl alcohol, complete alcoholysis type
polyvinyl alcohol and an inorganic
ultraviolet ray screener as main raw materials, and a
plasticizer, a surfactant, an emulsifier, etc. are added for mixing and preparing rubber, and a solution
tape casting method is used for preparing a film. The ventilating amount of the
composite film is regulated by adjusting the proportion of the partial alcoholysis type polyvinyl
alcohol in a
film forming agent; the
ultraviolet resistance performance is realized by the inorganic ultraviolet
ray screener nanometer
titanium dioxide or nanometer
zinc oxide or a combination thereof. The intensity of
ultraviolet resistance can be set freely according to the requirement of users. The ultraviolet resistant polyvinyl
alcohol fruit bag film of the invention is made of the polyvinyl
alcohol-containing film which has the advantages of biological degradability,
ultraviolet resistance, high permeability, anti-
softening with water, etc., and is especially suitable for preparing fruit
plastic film bags and automobile glass, etc.