METHOD AND PELLET FOR ENCAPSULATING LEAD FRAMES AND DEVICE FOR MANUFACTURING PELLETS

摘要

THE INVENTION RELATES TO A METHOD AND PELLET (6, 17, 21, 25, 28, 30) FOR ENCAPSULATING LEAD FRAMES (5). PRIOR TO APPLYING PRESSURE TO A PELLET, A PLASTIC FOIL IS PLACED BETWEEN THE PELLET AND A PLUNGER (10, 34). THE PELLET IS CHARACTERIZED IN THAT IT CONSISTS OF A BODY OF ENCAPSULATING MATERIAL (18, 24) (E.G. EPOXY) AND A PLASTIC LAYER (11, 19, 23, 26, 29, 31) CONNECTED THERETO. THE INVENTION FURTHER RELATES TO A DEVICE FOR MANUFACTURING SUCH A PELLET. FIGURE 5