The invention discloses a
copper foil pressing process for a rigid-flex board with a
gasket, and relates to the technical field of
copper foil pressing, and the process comprises the following steps: S1, carrying out windowing
processing on PP2 close to one side of a flexible region, and keeping PP1 close to one side of a
copper foil in a non-windowing state; s2, a PTFE glue blocking
gasket matched with the PP2 windowing area is prepared; s3, carrying out lamination riveting and lamination according to a preset sequence; s4, adopting a double
mask protection mode; s5,
processing an annular presplitting groove in the position, corresponding to the flexible area cover, of the exposed PP1 surface after
etching; s6, monitoring the size of the
micro gap in real time through a
laser displacement sensor, and feeding back and adjusting
temperature control parameters; and S7, the PTFE glue blocking gaskets are guided and collected from the micro gaps through the guide channels. According to the method, the pre-splitting groove is matched with a directional force
coupling uncovering mode, and an existing uncovering scheme of blind groove
laser milling and manual prying is replaced. And the pre-splitting groove provides an accurate path for fracture, so that the problems of irregular fracture and burr generation of the PP protective layer can be effectively avoided.