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Overview of Technological Development of Black Plating

  • Developed nodule plating technology and corrosion resistant plating technology using rolled copper foil
  • Nodule is formed on the matte side, maximizing the surface area for higher adhesion strength whereas the shiny side is plated for heat resistance and corrosion resistance

Characteristics of plated foil

  • Maximized adhesion strength through hundreds of
    nano sized micro nodules
  • Superior heat resistance property through increasing surface area
  • Corrosion resistance and heat resistance of product through post-process plating

Surface color

Jeonyoung Company A Company B
S-side Yellow Pale yellow Redish
Color
M-side
Color Dark-black Red-black Dark-black

Microscopic Images

Jeonyoung Company A Company B
S-side
(x30)
M-side
(x200)

SEM Image of M-Side

Jeonyoung Company A Company B

Our nodules are more densely formed for increased adhesion strength. (Number of nodules/ μ㎡: Jeonyoung > Company A > Company B)

Roughness

  • Ra
  • Rz

Jeonyoung Company A사 Company B사
Rz 1.01 0.84 0.73
Material thickness 35㎛(25㎛) 35㎛ 35㎛
S-side Ra 0.14 0.11 0.11
Rz 0.95 0.62 0.68
M-side Ra 0.15 0.14 0.11

We have maximized Rz to increase adhesion strength.

Thermo chromic Test Result (30 minutes at 200℃)

Jeonyoung Company A Company B
Before
After
Result OK OK OK

Application

Application

Absorber(EMI shielding) · Thermal Spread Sheet · Conductive Tape · EMI Gasket · FCCL

FCCL FPCB(FCCL+Cover lay)

이용약관

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