HDPE Waterproof Membrane

HDPE waterproof board/membrane is a kind of flexible sheet material manufactured through a series of processes including shaping, cooling, testing, bundling and packaging, with ethylene vinyl acetate copolymer as the main raw material, mixed with an appropriate amount of modifiers, antioxidants, ultraviolet absorbers, colorants, fillers, plasticizers, etc. HDPE waterproof membrane is featured by excellent resistance to environmental stress cracking, flexibility, high strength, small specific gravity, high elongation, convenient laying, no displacement, etc. it applies to a variety of underground caves, tunnels, subways, municipal construction and other waterproofing and seepage-proofing works.

ESE 304 HDPE Waterproof Membrane

Maximum tension (KN/m), ≥60

Tensile Strength/MPa, ≥16

Elongation at break/%, ≥550

Foldability at Low Temperature: -35 °C

Thickness: 0.6~2.0mm, Width, 2.0 and 3.0 meters

Features

1)High tensile strength, large elongation and small size change after heat treatment.

2)Good low-temperature flexibility, excellent adaptability to ambient temperature change and strong resistance to chemical corrosion, providing good applicability to special occasions.

3)Good resistance to root and puncture, providing applicability to planted roofing

4)Good plasticity, allowing easy handling of edges and corners

5)Convenient construction, weldable, solid, reliable and pollution-free, easy maintenance and low cost.

Application Scope

It applies to a variety of underground caves, tunnels, subways, municipal construction and other waterproofing and seepage-proofing works.

Construction Technology

With the use of pre-laid method, the construction process for horizontal plane, vertical plane and tunnel vault are as follows:

1).Horizontal Plan: substrate cleaning → setting out on substrate → laying of pre-laid membrane → overlap treatment → joint treatment → isolation film removal → steel bar binding → concrete pouring

2)Vertical plane: Installation of façade support (spacer) → setting out → laying of pre-laid membrane → mechanical fixing of membrane (welding or nailing) → overlap treatment → joint treatment → isolation film removal → special adhesive application at nail heads → steel bar binding → concrete pouring

3)Tunnel vault: Tunnel vault→setting out →installation of support (spacer or hanging nail) → laying of pre-laid membrane → mechanical fixing of membrane (welding or binding) → overlap treatment → joint treatment → isolation film removal → steel bar binding → concrete pouring

Notices

1)Lay the plastic waterproof board loosely, leaving sufficient margin according to the flatness of substrate

2)The material surfaces at welding points shall be cleaned and free of water, oil and dirt

3)Strictly check the welding quality to prevent welding missing and skipping

4)During construction, protect the site and keep the persons wearing spiked shoes away from the construction site laid with membrane

5)Do not conduct construction in rainy, snowy and dewy days or in the days with wind larger than force 5

ESE 306 HDPE Waterproof Membrane

Maximum tension (N/50mm), ≥500~800

Tensile Strength/N, ≥400~500

Elongation at break/%, ≥400~450

Foldability at Low Temperature: -25 °C

Thickness: 0.6~2.0mm, Width, 2.0 and 3.0 meters

HDPE (high-density polyethylene) self-adhesive film waterproof membrane has special structure and function which can form combined system of plastic buffer layer with concrete. On basement of keeping membrane’s original nature, it has enhanced function by setting without nailing to fully paste membrane and second lining, which called ‘skinned’ waterproof that no water appears even if it is broken.

Features

1)enhanced waterproof mechanism: sticky to base layer, strong bonding and good supereminence. Changing from simple layer resistance to 360° whole sealing waterproof, it can prevent water appearing.

2)enhanced construction method: It has low requirement to base sheet (directly construction on wet sheet). And it can be simple installed which is independent of the weather.

3)Enhanced lapping: the 2-meter width reduces loss and promotes speed. By using self-adhesive seal, the reliability gets enhanced.

4)Thermoplastic rubber bonding layer: under the concrete hydration heat temperature, the low tem thermoplastic rubber bonding layer of membrane starts plastic response. Special active substances from the self-adhesive layer can form strong adhesion. The creep of the self-adhesive layer could not be pollute by surface construction dust. By bonding wet concrete, solve the problem of non-adhesion of thoroughly thermoplastic membrane and two lining structure.

Application

1)the product is suitable for various roofing, basement, tunnel, building waterproof engineering, industrial and civil building roofs and underground engineering, water tank, municipal, bridges, subway, tunnel.

2)The product is suitable for waterproof dam engineering, especially for durability, corrosion resistance, high and easy to deformation of the key project.

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