In Consideration of Lamination Crazing in No-flow Prepreg

The article introduces the reason why lamination crazing are produced during the process of making rigid-flex print board with the use of no-flow prepreg. Through the lamination experiments on different conditions (different press pad material, different copper patterning, different lamination pressure, different amount of pieces of prepreg),it is found that the lamination of no-flow prepreg is very different from normal prepreg, such as lamination accessorial material, lamination pressure, and lamination model. Finally, from previous analysis of experiment data, a lamination model was brought forward.