Next Article in Journal
Effects of Al Sputtering Film on the Oxidation Behavior of NiCrAlY Bondcoat
Next Article in Special Issue
Borate and Silicate Bioactive Glass Coatings Prepared by Nanosecond Pulsed Laser Deposition
Previous Article in Journal
Micrographic Properties of Composite Coatings Prepared on TA2 Substrate by Hot-Dipping in Al–Si Alloy and Using Micro-Arc Oxidation Technologies (MAO)
Previous Article in Special Issue
Layer-by-Layer Deposition of Hyaluronan and Quercetin-Loaded Chitosan Nanoparticles onto Titanium for Improving Blood Compatibility

Rescue Blankets-Transmission and Reflectivity of Electromagnetic Radiation

Hall County Hospital, Milserstr. 10, 6060 Hall, Austria
Medical Division, Austrian Mountain Rescue Service—Tyrol, Florianistr. 2, 6410 Telfs, Austria
Department of Anesthesiology and Critical Care Medicine, Medical University of Innsbruck, Anichstr. 35, 6020 Innsbruck, Austria
Author to whom correspondence should be addressed.
Coatings 2020, 10(4), 375;
Received: 19 March 2020 / Revised: 2 April 2020 / Accepted: 8 April 2020 / Published: 10 April 2020
(This article belongs to the Special Issue Multifunctional Coatings on Medical Devices)
Rescue blankets are medical devices made of a polyethylene terephthalate sheet coated with a thin aluminum layer. Blankets are used for protection against hypothermia in prehospital emergency medicine and outdoor sports, but totally different qualities are typical for these multi-functional tools. On the one hand, rescue sheets prevent hypothermia by reducing thermo-convection and diminishing heat loss from evaporation and thermal radiation. On the other hand, the sheets promote cooling by acting as a radiant barrier, by providing shade and even by increasing heat conduction when the sheet is in direct contact with the skin. As foils are watertight and windproof, they can function as vapor barriers and even as stopgap bivouac sacks. We evaluated three experimental studies, one on heat loss by rescue blankets according to surface color, one on transparency with ultraviolet radiation, high-energy visible light and visible light, and one on infrared radiation from rescue blankets. When evaluating the effects of different bands of the electromagnetic spectrum on rescue sheets, we focused on ultraviolet radiation (200–380 nm), high-energy visible light in the violet/blue band (380–450 nm), visible light (380–760 nm) and infrared radiation (7500–13,500 nm). Rescue sheets transmit between 1% and 8% of visible light and about 1% of ultraviolet B radiation (280–315 nm), providing sufficient transparency and adequate protection from snow blindness. Reflection of visible light increases detectability in search and rescue missions performed in good visibility conditions, while reflection of infrared radiation increases detectability in poor visibility conditions and provides protection against hypothermia. View Full-Text
Keywords: emergency medicine; far infrared; hypothermia; insulation; rescue work; rescue blanket; space blanket; survival blanket emergency medicine; far infrared; hypothermia; insulation; rescue work; rescue blanket; space blanket; survival blanket
Show Figures

Figure 1

MDPI and ACS Style

Kranebitter, H.; Wallner, B.; Klinger, A.; Isser, M.; Wiedermann, F.J.; Lederer, W. Rescue Blankets-Transmission and Reflectivity of Electromagnetic Radiation. Coatings 2020, 10, 375.

AMA Style

Kranebitter H, Wallner B, Klinger A, Isser M, Wiedermann FJ, Lederer W. Rescue Blankets-Transmission and Reflectivity of Electromagnetic Radiation. Coatings. 2020; 10(4):375.

Chicago/Turabian Style

Kranebitter, Hannah, Bernd Wallner, Andreas Klinger, Markus Isser, Franz J. Wiedermann, and Wolfgang Lederer. 2020. "Rescue Blankets-Transmission and Reflectivity of Electromagnetic Radiation" Coatings 10, no. 4: 375.

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop