Monday - December 1, 2014

Trending: Further improvement in the energy efficiency of metal-faced sandwich panels

Optimally insulate industrial buildings with rigid polyurethane foam

Bayer MaterialScience operates modern technical center

Leverkusen, December 1, 2014 – Building energy efficiency can be increased significantly by using the right insulation. Rigid polyurethane foam is a very effective insulating material and therefore used to fabricate sandwich panels and insulation boards, among other things. Sandwich panels comprising two metal facings and a rigid polyurethane foam core have been used for the efficient thermal insulation of large industrial and administration buildings for quite some time now.

The finished sandwich panels display both high strength and low weight. With a suitable profile and coating, they can be designed to meet customer requirements for overall appearance. Another advantage is their simple fabrication, and they are largely maintenance-free.

Insulation boards have flexible facings, such as aluminum foil, multi-ply paper or minerally-coated glass fiber fleece, and they are used to insulate pitched and flat roofs, floors, as well as interior and exterior walls in both private residential construction and building renovation projects.

Metal-faced sandwich panels and insulation boards are fabricated in a continuous process on twin belt machines. The reaction mixture is first applied to one of the two facings. It foams and immediately bonds with the second facing, which is applied from above. In this way, the two facings are firmly bonded together via the rigid foam core. Afterwards, the element or panel is so strong that it can be trimmed to the desired dimensions and packaged.

Finished metal-faced sandwich panels weigh between 10 and 20 kg/m2 depending on thickness. Thanks to their high inherent strength, the composites can bear considerable forces, such as those acting on buildings due to wind or snow, meaning they are ideally suited to use in both facade and roofing applications.

Modern facility for improving energy efficiency
At Bayer MaterialScience’s new Polyurethanes Technical Center, metal-faced sandwich panels and insulation boards can be developed on a continuous-mode unit. This modern unit can be used to fabricate sample components on an industrial scale. The goal is to further improve the insulating effect and fire resistance of composite sandwich panels and insulation boards in line with customer needs and market trends.

The equipment is designed primarily for rapid, precision development with fast parameter changes. Eleven additive metering units allow a formulation to be adapted online. The new unit was designed for the use of flexible or rigid facings. It also facilitates allows for the targeted adjustment of the mechanical properties or flame resistance, for example using mat inserts made of glass fiber.

About Bayer MaterialScience:
With 2013 sales of EUR 11.2 billion, Bayer MaterialScience is among the world’s largest polymer companies. Business activities are focused on the manufacture of high-tech polymer materials and the development of innovative solutions for products used in many areas of daily life. The main segments served are the automotive, electrical and electronics, construction and the sports and leisure industries. At the end of 2013, Bayer MaterialScience had 30 production sites and employed approximately 14,300 people around the globe. Bayer MaterialScience is a Bayer Group company.

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