How important is FPC material to flexibility?


Posted September 29, 2019 by summer77

 Flexural performance is very important in FPC flexible circuit board design, and the factors affecting it can be said from two aspects.
 
 Flexural performance is very important in FPC flexible circuit board design, and the factors affecting it can be said from two aspects: FPC material itself has an important impact on flexural performance; FPC flexible circuit board manufacturing process for flexibility Impact.
    The main factors affecting the flexibility of FPC materials are the type of material and the thickness of the material. The molecular structure and direction of copper foil, the folding resistance of rolled copper is obviously better than that of electrolytic copper foil; the thinner the thickness of copper foil, the better the folding resistance performance of the same kind of copper foil; The softness of the acrylic adhesive is better, and the high-flexible material is mainly epoxy. The thinner the thickness of the adhesive, the better the flexibility of the material, and the flexibility of the FPC can be improved. The thinner the thickness of the insulating substrate PI is. The better the softness, the better the flexibility of the FPC, and the better the flexural performance of the FPC with the low tensile modulus.

    The influence of the FPC manufacturing process on the flexibility is mainly reflected in the symmetry of the FPC combination and the control of the pressing process. After the substrate is applied to the cover film, the better the symmetry of the material on both sides of the copper foil can improve the flexibility. Because it is subjected to the same stress during flexing. When the FPC is pressed, the glue is filled into the middle of the line, and there is no delimitation. If there is delimitation, the equivalent of bare copper in flexing will reduce the number of deflections.
https://www.lhd-pcb.com/flexible-pcb.html
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Issued By summer
Country China
Categories Blogging
Tags fpc
Last Updated September 29, 2019