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Roof cooling film aims to cut rolling stock air-conditioning costs

Summary by Railway Gazette
INNOTRANS: Adhesives and coatings specialist 3M has launched a new coating film aimed at reducing the effect of passive radiation on rolling stock roofs. The 3M Cooling Film offers a high solar reflectance, deflecting or reflecting more than 85% of incoming solar radiation, and has a thermal emittance of around 91% to radiate absorbed heat
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Railway Gazette broke the news on Thursday, October 1, 2026.
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