2022/11/03
Heating mode of circuit board press
Circuit board press there are mainly three heating methods: steam, superheated water and hot oil. A. The steam is directly sent to the laminator by the steam boiler for steam heating. The steam temperature is proportional to the steam pressure. As long as the steam pressure is well controlled, the purpose of temperature control can be achieved. With steam as the heat source, the temperature difference of the laminator fluctuates greatly. The hot pressing plate can be cooled directly with cold water. The steam heating equipment is simple in composition and less in investment, so it is still used by many CCL plants.
2022/11/03
CCL press introduction to the principle of pressing copper clad laminate. The adhesive sheet first softens and melts under heat and pressure in the laminator, and the polymer becomes viscous fluid. With the temperature and time gradually increasing, the resin begins to cure, and the viscosity gradually increases. When it reaches the gel point, the viscosity rapidly increases. Dicyandiamide is a latent curing agent. In the presence of accelerator, it starts to slowly react with epoxy resin at 70 ℃, and after reaching 120 ℃, the reaction speed is accelerated. The reaction reached the peak at 150-155 ℃.
2022/11/03
he hot pressing is the core of the laminator, which is also called the hot plate. Its processing accuracy and temperature accuracy have a great impact on product performance. The machining accuracy refers to the parallelism and flatness of the hot pressing plate, which is related to the thickness deviation of the product. The pipe structure in the hot pressed plate is related to the heat transfer effect and temperature accuracy.
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