EVA / ECB Sheet

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EVA / ECB Sheet

Ethylene Vinyl Acetate / Ethylene Copolymerized Bitumen

Processed and manufactured using synthetic polymers as the main raw material, Ethylene-Vinyl Acetate (EVA) copolymer offers excellent physical, chemical, and mechanical properties.

In particular, it has outstanding durability, chemical resistance, and tensile performance, making it highly suitable for NATM tunnels.

Through advanced production facilities and systematic development in accordance with standards such as KS and ISO, our products are recognized overseas for their excellence, contributing significantly to exports.
EVA Sheet Applications
Tunnels and underground structures: tunnels, utility tunnels, power conduits, communication ducts

EVA Sheet Types

Integrated Waterproof Sheet
EVA + Nonwoven Fabric
Integrated Waterproof Sheet
EVA + Nonwoven Fabric

EVA Sheet Properties

Test Item Separated Type Integrated Type
Thickness (mm) ≥ 2.0 ≥ 1.2
Tensile Strength (MPa) ≥ 16 ≥ 16
Tear Strength (N/mm) ≥ 60 ≥ 60
Heat Expansion/Contraction Elongation (mm) ≤ 2.0 ≤ 2.0
Shrinkage (mm) ≤ 6.0 ≤ 6.0
Elongation at Break (%) ≥ 600 ≥ 600
Ethylene copolymerized with asphalt provides excellent flexibility and easy application to the required structural shapes.

It contains additives such as antioxidants and carbon black to enhance resistance to chemicals and weathering.
ECB Sheet Application Fields
Tunnels and underground structures :
tunnels, utility conduits, power ducts, communication ducts

ECB Sheet

ECB Sheet is a waterproof sheet made from a synthetic polymer obtained by copolymerizing ethylene and vinyl acetate.

With thermoplastic properties, it offers excellent physical and chemical performance, ensuring perfect waterproofing in tunnels and is also applied in artificial lakes.

ECB Sheet

Test Items Unit Standard
Thickness (mm) mm 2.0
Tensile Properties Tensile Strength MPa 10 or more
Elongation % 450 or more
Tear Properties Tear Strength N/mm 40 or more
Temperature Dependence Tensile Strength (60℃) MPa 1.5 or less
Elongation (-20℃) % 200 or less