Functional film for improving impregnation properties of composite material and method for manufacturing composite material using same

A film comprising:

• a continuous fiber layer having a first surface and a second surface opposite to the first surface;
• a first resin layer attached on the first surface of the continuous fiber layer, the first resin layer comprising a first prepolymer;
• a first carrier film on the first resin layer, the first carrier film comprising a first thermoplastic polymer compatible with the first prepolymer;
• a second resin layer attached on the second surface of the continuous fiber layer, the second resin layer comprising a second prepolymer;
• and
• a second carrier film on the second resin layer, the second carrier film comprising a second thermoplastic polymer compatible with the second prepolymer,
• wherein the first prepolymer and the second prepolymer are different prepolymers, each of the first and the second prepolymer comprises a prepolymer of at least one selected from among, polypropylene, polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyetheretherketone (PEEK), polylactic acid (PLA), and the continuous fiber layer comprises a fiber bundle of 600 tex to 2400 tex.