Prepreg impregnation line is suitable for 7628, 2116, 1080 fiberglass, felt, kraft paper impregnation, drying, rewinding and length cut. Especially in impregnation of FR-4, CEM-1, CEM-3 and other prepregs. It Adopts infrared flection, thermal oil heating, multi-point temperature control, and PP GT tolerance ≤2.5S. PP surface smooth, without impurity and air bubble.
Production process of prepreg
1. The configured epoxy resin is sent to the gluing machine through the mixing cylinder
2. Electronic glass fiber cloth
3. Epoxy resin glue mixed with electronic glass fiber cloth
4. Heat treatment (drying)
5. Finished prepreg
6. Cutting & Testing
Due to the difference in the number of yarn strands per unit length of the fiberglass cloth in the warp and weft directions, pay attention to the warp and weft directions of the prepreg when cutting. Generally, the warp direction (the direction in which the fiberglass cloth is curled) is selected as the short side direction of the production board. To produce the long side of the board, to ensure the flatness of the board surface, to prevent the board from being distorted when heated.
☆ High precision doctor roller, motion accuracy ≤0.002mm, liner precision ≤0.001mm/m. Thickness tolerance of PP after impregnation matches ISO standard.
☆ Close loop servo control system, multi-point tension control, PP online tension tolerance ±3N, guarantee 1080 non-stop, non-breakdown operating.
☆ The cloth surface is flat, free of oil, smudges, foreign impurities or other defects, no cracks and excessive resin powder.
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