Impregnation device for fiber prepreg and method thereof

An impregnation method for a fiber prepreg, comprising:

• providing an impregnation device including a film layer separation assembly, a hot pressing element disposed beneath the film layer separation assembly in a vertical direction, and a thermal barrier element disposed between the film layer separation assembly and the hot pressing element in the vertical direction;
• providing a resin film, wherein the resin film comprises a release film, a resin layer located on the release film, and a film layer located on the resin layer;
• separating the film layer and the resin layer of the resin film using the film layer separation assembly of the impregnation device to obtain a resin composite structure including the release film and the resin layer;
• providing a fiber layer;
• and
• hot pressing the resin composite structure, the fiber layer and the resin composite structure from top to bottom using the hot pressing element of the impregnation device at a temperature higher than 90° C. to obtain the fiber prepreg, wherein the resin layer of the fiber prepreg is in direct contact with the fiber layer.