Sinotech Signal Layer Geomembranes

Sinotech's new "SHDS"geomembranes solves the problems caused by on site blasting, sharp objects, and scratches that can be damaging to the geomembrane.

Sinotech Geomembranes

Because all of our geomembranes do not degrade from ultraviolet or other environmental factors, they do not need to be buried for protection.

Geomembrane Loading

A maximum of sixteen rolls of Sinotech smooth geomembranes can be loaded into one 40' standard container, while a maximum of eighteen rolls can be loaded into one 40' high cube container.

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Sinotech believes the fluid containment issue, with all of its ramifications, requires unquestioned excellence.
Material Specifications
  • Sinotech SHDS Smooth*
  • Sinotech SHLH Smooth*
    • * These documents are in PDF format and require you to have a PDF reader installed on your computer. Sinotech offers a couple of software suggestions for you here.

    Nowadays geomembranes are widely used in landfills, mining industries, hydro-power projects, and bio-gas projects as an impermeable material. However, often in the process of installation and usage, it is hard to avoid on site blasting, sharp objects, and scratches that can be damaging to the geomembrane.

    How to assist on-site installation crews and inspectors to locate and repair these possible leakage problems effectively and lower overall project risks? Sinotech's new "SHDS" innovation resolves the problem stated above with a simple and economical solution as presented below.

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    Cross section of of Sinotech SHDS geomembrane*

    Sinotech SHDS has a signal yellow core layer which can be easily identified when scratches or damages occur to the surface of the membrane.

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    Left side SHDS and right side regular geomembrane
    SHLH Geomembranes
    Sinotech SHLH geomembranes combine the chemical resistance and impermeability of HDPE with the flexibility, elongation, and stress crack resistance characteristics of LLDPE.

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    Cross section of Sinotech SHLH geomembrane*

    Chemical Resistance

    With the HDPE outside layers, Sinotech SHLH possesses the barrier properties of a HDPE liner. In accordance with the science of transport phenomena, the layers function like electrical sistors in series. HDPE is the "controlling assistance" to chemical penetration. The outer surface therefore becomes the "bottleneck" to chemical movement throughout the liner.

    Stress Crack Resistance

    Long term stress crack testing has shown that induced stress cracks will not penetrate the LLDPE layer. This has been expirementally demonstrated by purposely notching one of the outside HDPE surfaces and noting the progress of crack propogation in constant load stress crack testing with stress-crack-accelerating solution. This ductile LLDPE inside layer stops crack propogation as soon as it encounters the HD/LLDPE interface.

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    Cross section of Sinotech SHLH geomembrane*

    Flexibility and Elongation

    Sinotech SHLH also offers the flexibility and elongation of LLDPE. This is because the bulk of the liner is the inner core. Sinotech SHLH therefore behaves like LLDPE in standard performance testing. In particular, multi-axial elongation and truncated cone puncture performance are superb.

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    Multi-axial Elongation testing of Sinotech SHLH geomembrane
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    Multi-axial Elongation testing of HDPE geomembranes

    *cross sections are not to scale