MLI takes vacuum insulation performance to the next level

High temperature multilayer insulation designed for applications up to 1000°C

High temperature multilayer insulation installed inside the vacuum annulus of an Insulon vacuum insulated tube (illustration)
High temperature multilayer insulation can be installed inside the vacuum annulus of Insulon® tubes, pipes, cans, and more

Thermal radiation can easily penetrate the vast majority of insulation materials, even those designed for high temperatures. Standard Insulon® vacuum insulation drastically reduces convective and conductive heat transfer, but radiation can still get through. For super insulation performance, reducing radiation heat transfer is key. That’s why our engineers have developed multilayer insulation that can reduce high temperature radiation heat transfer. We install our proprietary high temperature MLI inside the vacuum annulus of our tubes, pipes, cans, and containers to create ultra high performance insulation packages that reduce convection and radiation heat transfer. Our high density, high temperature MLI packages include up to 18 layers/inch (7 layers/cm) and are effective in environments up to 1000°C.

What is Multilayer Insulation?

You have probably seen images of spacecraft and satellites soaring through outer space while wrapped in silver or gold foil. This super shiny, highly reflective foil is called multilayer insulation (MLI).

Highly reflective multilayer insulation provides radiant barrier insulation for spacecraft in outer space
Spacecraft and satellites use reflective multi layer insulation to reflect radiation in outer space

Multi layer insulation is composed of multiple layers of thin, reflective material, and is used to reflect radiation heat transfer. While very effective at insulating against radiation, these layers often include materials with high thermal conductivity. Due to the presence of conductive materials, it is most effective in high vacuum environments. It is an ideal insulator in outer space, where radiation is abundant and convection and conduction are virtually nonexistent.

How does MLI reduce radiation heat transfer?
Multilayer insulation reduces radiation heat transfer by reflecting radiation back towards the source

What makes our MLI different?

High temperature capabilities

MLI performs better in high vacuum environments. Because many vacuum systems encounter problems with contamination when taken to higher temperatures, high vacuum multilayer insulation has traditionally been limited to cryogenic applications. Our MLI packages are different because they are contained within the vacuum annulus of Insulon® components. Insulon® vacuum spaces are able to perform in high temperature environments without contamination issues, and have a maximum operating temperature of 1000°C.

Ultra thin profile

Insulon® components can be as thin as 0.25mm. We increase the width of the vacuum space to accommodate your desired amount of MLI, optimizing layer density to suit the needs of your application. Each additional layer reflects more radiant heat, resulting in increased thermal performance.

High layer density

Our high density MLI can pack up to 18 layers/inch (7 layers/cm).