SoliBlanket™ ULS®-Grade

The low bio persistence grade of the SoliBlanket product range is labelled our ‘ULS’ grade. The SoliBlanket ULS-grade is the first Generation III manufactured, Ultra Low Shot, low bio persistence (LBP) high temperature insulating fiber blanket worldwide. The SoliBlanket ULS-grade has a classification temperature of 1200°C and is engineered to perform continuously in a wide range of applications up till 1050°C continuously.

ULS stands for Ultra Low Shot and Soliblanket ULS is a true Generation III product that enhances great benefits over Generation I and Generation II  low bio persistence fiber blankets, with improved thermal conductivity and mechanical strength as result of the high fiber index

SoliBlanket ULS-grade, as the name implies, is the original product developed to utilized the Ultra Low Shot fiber technology. As we believe that reducing energy consumption and minimizing CO2 emissions in the production process will become part of sustainable environmental drivers, thermal insulating properties will become more important. SoliBlanket ULS-grade, benchmarked against several other standard LBP blankets, resulted in thermal conductivities up to 44 % better than some Generation I products @ 1000°C. Another great benefit of the Ultra Low Shot technology used for manufacturing our SoliBlanket ULS-grade.

The key technical aspect of our Generation III, ULS technology, is to make products with less shot and a higher fiberindex. This results in a better blanket product. The Soliblanket ULS-grade is stronger, feels more comfortable to handle and provides better thermal insulation. During installation our ULS technology fiber products offers a higher resiliency after compression, which is particularly important when making fiber modules or in case the blanket (strip) is installed perpendicular to the main fiber orientation, or in easier words; stack(bonded).

All products in the SoliWool ULS fibers product range, like the SoliBlanket ULS, have been tested at the Fraunhofer institute and meet the requirements specified under NOTE Q of European Regulation 1272/2008. All SoliBlanket ULS fiber products are therefore exonerated from labelling requirements in Europe. Vulcor is REACH compliant and has completed Fraunhofer certification for the SoliBlanket ULS product range.

SoliBlanket ULS-grade is part of the SoliBlanket product range. With a variety of five Refractory Ceramic Fiber (RCF) grades and the famous ‘ULS’ Low Bio Persistence Fiber grade we are offering one of the most extensive ranges of high temperature fiber blankets in the market today. With our different chemical compositions we are able to provide a solution to nearly every atmosphere or temperature.


  • High fibre index
  • Low shot technology
  • Excellent insulation performance
  • High handling strength
  • Low heat storage
  • Excellent thermal stability
  • Exonerated of carcinogenic classification under Note Q

Typical applications

  • Thermal insulation for furnace lining
  • Thermal insulation for lining stacks and chimneys
  • Thermal protection cover in aluminum industry
  • HRSG thermal liner for boilers and ducting
  • Exhaust heat shields for automotive application
  • General technical insulation of furnaces and
    technical installations.
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