Pressing of fiberglass board

The pressing process of epoxy resin copper clad laminate is roughly divided into three stages: heating, heat preservation and cooling. The pressing process can be operated manually or controlled by a computer. The heating stage is mainly to gradually transfer heat from the heating plate to each product between the layers to melt and flow the resin. At the same time, pressurize according to the melting and flow of the resin. According to my years of work experience, this stage is the key to the pressing process. If the pressurization is not timely, it will cause "underpressure" and defects such as "microbubbles" and "dry flowers"; on the contrary, if the pressurization is too early, it will cause the glue to flow. More or more problems such as skateboarding.