#flex circuit pcb

[coffin-spider]

Miraculously…

[fpcway-daisy]

The protective film and adhesive should be excluded from the plated holes of the flexible board, and window openings and adhesive sheets can be used instead.

[fpcway-daisy]

Traditional acrylic resins and modified epoxy resin systems are relatively inexpensive materials that can meet the needs of low-layer, thin copper foil product manufacturing processes.

[fpcway-daisy]

Many rigid-flex panel layers are laminated together using flexible sheets, which include acrylic resin and coated adhesives.

[fpcway-daisy]

Lamination does not require substrate treatment; it only requires ensuring good adhesion of the pre-treated metal surfaces.

[fpcway-daisy]

Surface treatment: Oxygen-plasma treatment is a good method because it dries the surface, avoids exposure to foreign matter, and improves adhesion.

[fpcway-daisy]

Acetone cleaning carries some risks, but it is quick and effective. It should be done a few minutes before lamination. Be careful to avoid using solvents containing water, as acetone is hygroscopic; the boards should be kept sealed.

[fpcway-daisy]

Sandblasting roughens and passivates smooth surfaces to improve mechanical bonding. It should ideally not be used on exposed areas of finished flexible boards, as this may cause quality problems.