Four-film prepreg production line and four-film prepreg production process

The invention relates to a four-film prepreg production line which comprises a yarn spreading device, a double-film prepreg forming device, a four-film prepreg forming device and a finished product winding device which are sequentially arranged in the conveying direction of a reinforcing material. The four-film prepreg production process comprises the following steps of selecting the reinforcing material, conducting double-film prepreg forming, conducting four-film prepreg forming, and conducting four-film prepreg cooling and rolling. Prepreg produced by using the production line and the production process disclosed by the invention is higher in rigidity, does not stick to a cutter during slitting, and can meet the requirements of a subsequent slitting process. 本申请的四膜预浸料生产线包括：沿增强材料输送方向依次设置的展纱装置、双膜预浸料成型装置、四膜预浸料成型装置和成品收卷装置。本申请的四膜预浸料生产工艺包括如下步骤：选取增强材料、双膜预浸料成型、四膜预浸料成型、冷却收卷四膜预浸料。用本申请的生产线和生产工艺生产的预浸料，刚性更大，分切不粘刀，能够满足后续分切工艺的需求。