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Raven adds smooth-edge technology to extruded geomembranes

February 8th, 2021 / By: / Company News, Geomembranes

Raven now offers HydraLine in 23-foot (7-m) wide seamless, smooth-edge, textured mill rolls.

Raven Industries Inc. announced that its Engineered Films division has incorporated new smooth-edge technology onto its seven-layer barrier extrusion line for the production of 23-foot (7-m) wide textured sheet geomembranes.

The new smooth-edge extrusion process creates a high-quality smooth surface edge on the top side, bottom side or on both sides of double-sided textured products. This new technology increases the thermal fusion welding surface and weld integrity of the company’s single- and double-sided textured HydraLine products in thicknesses of 30–80 mil (0.75–2 mm), including:

  • HDT-Series high-density polyethylene (HDPE) geomembranes
  • LLT-Series linear-low-density polyethylene (LLDPE) geomembranes

The Raven HydraLine HDT- and LLT-Series are designed with a textured surface for more challenging applications that require increased friction angles to provide higher stability on steep slopes, stabilization for earthen and secondary geosynthetics, and increased worksite safety.

“We are excited about this new addition to our textured HydraLine seamless products; this enhancement will provide our customers with major upsides in quality welds and reduced labor while installing our products in the field,” said Tim Hart, director of sales for Raven Engineered Films. “This product line was designed with our customers top of mind, offering a competitive price point advantage to significantly drive their sales and market share in the geosynthetics space.”

This complex line enhancement was accomplished in just over 12 months–including design, build and installation time to complete–and its massive 66-inch (168-cm) extrusion die body weighs in at more than 10,000 pounds (4,536 kg). With an annual output capacity of 16 million pounds (7,257,478 kg), this multilayer line is capable of producing smooth, seamless geomembranes along with complex multilayer barrier structures for the effective containment of hazardous volatile organic compounds (VOCs) in liquid, solid, odor and gas form.

Raven HydraLine textured geomembranes are manufactured in a quality environment under a stringent ISO 9001 certified management system and tested in an accredited GAI-LAP laboratory to meet and exceed the GRI-GM13 and GM17 industry performance standards, respectively. Raven textured HydraLine is formulated for high tear and puncture resistance, and includes a 20-year manufacturer warranty for long-term protection from thermal oxidation and ultraviolet light degradation.