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ESD Foam also called Anti Static Foam, which is widely used as different ESD Protection packaging material requests, it including pink and black foams in colors, Antistatic foam, conductive foam, static dissipative foam in ESD foam resistance types, foam roll, foam sheets , foam blocks , foam inserts , foam padding, plank foam in foam shapes so on.
The Differences of 4 types ESD foams
ESD foam types     Ordinal Foam Size     Foam Shape     ESD Foam type     Odor
ESD PE Foam     Single Thickness:0.**7mm

Laminated :**0mm
    Roll/Sheet     Permanently     No Odor
ESD EVA Foam     Single Thickness:*0mm

Laminated :**0mm
    Sheet/Block/Board     Permanently     ****-
ESD EPE Foam     Single Thickness:*0mm

Laminated :**0mm
    Roll/Sheet     Around 6 Months     No Odor
ESD PU foam     Single Thickness:*0mm

Laminated :**0mm
    Sheet/Block/Board     Around 6 Months     *******-
Below are the four types ESD foam (PE Foam, EVA Foam , EPE foam, PU foam )features and strong points,  more comparision about the black foam pink foam,red foam, please refer to my posts  Foam Sheet Packing Material | Pink and black Foam for Packaging

ESD PE Foam
    Color:Black
    Material: PE material
    Size:Customized.
    surface resistance:*0^**9
    Cell structure: closed cell.
    Anti static time: Long time.
Strong Points: No smell, Eco-friendly.


ESD EVA Foam
    Main material: EVA foam
    Size: customized
    Surface resistance:*0^**9
    Color:Black
    Cell structure: closed cell.
    Anti static time: long time.
Strong Points: Single layer thick up to *0mm, easy to process molding.


ESD EPE Foam
    Main material: EPE foam
    Size:customized
    Surface resistance:*0^***1
    Color:Pink
    Cell structure: closed cell.
    Anti static time: short time around 6 month.
Strong Points: Softer than PE and EVA foam, Eco friendly.


ESD PU Foam
    Main material: PU foam
    Size:customized
    Surface resistance:*0^**9
    Color:Black
    Cell structure: open cell.
    Anti static time: short time.

Strong Points: Soft and Sound absorption with open cell structure..