Defina o phpoffice PhPexcel de borda
Border::BORDER_DASHDOT
Border::BORDER_DASHDOTDOT
Border::BORDER_DASHED
Border::BORDER_DOTTED
Border::BORDER_DOUBLE
Border::BORDER_HAIR
Border::BORDER_MEDIUM
Border::BORDER_MEDIUMDASHDOT
Border::BORDER_MEDIUMDASHDOTDOT
Border::BORDER_MEDIUMDASHED
Border::BORDER_NONE
Border::BORDER_SLANTDASHDOT
Border::BORDER_THICK
Border::BORDER_THIN
anonimus_desu