PET Composite Copper Foil (CU+PET+CU)

Testing items

Unit

Norm value

Testing standards and methods

Areal density

g/c㎡

24±0.5

Sampler, balance

Thickness

μm

6.5(+1/-0)

Thickness gauge

Width

mm

280

Steel ruler

Square resistance

MΩ

20±3

Four Probe Square Resistance Meter

Resistivity

Ω/m

≤4*10-8

Four Probe Square Resistance Meter

Plating purity

%

99.9

Metal Detector

Tensile Strength

MD

MPa

≥240

Tensile tester

TD

≥240

Break elongation

MD

%

≥5%

TD

≥5%

Wettability

Dyne value

≥32

Dyne pen

Antioxidant

150℃10min

/

No color change

Oven

150℃10min

Not melt

Adhesion

/

Tape No. 681 does not fall off

3M tape

Pinholes

Number

No >500μm pinholes

Metallographic microscope

Appearance and storage conditions

The foil surface is smooth and flat; no interlayer folds; no indentation, bruises, scratches, uniform color, no corrosion, no oil stains, no black spots, smooth cut edges, and no obvious burrs.

Storage temperature≤25°C, temperature≤65°C, avoid direct sunlight and chemical corrosion.