FFP3 face mask material, SEM

Bildnummer 13296185
FFP3 face mask material, SEM
Coloured scanning electron micrograph (SEM) of a cross-section through an FFP3 (filtering facepiece 3) face mask. FFP is a European standard. FFP3 masks filter at least 99 percent of airborne particles. The outer layers (blue) of this mask are made from two different spunbond fabrics. The seven internal layers (white) are made from very fine meltblown fabric. The layers may be electrostatically charged so that particles adhere to them better. Spunbond and meltblown materials are both nonwoven fabrics formed from fibres of thermoplastic resin, typically polypropylene, bonded by heat and or pressure. Magnification: x30 when printed at 15cm wide.
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / EYE OF SCIENCE
Bildgröße: 6400 px × 6944 px
Modell-Rechte: nicht erforderlich
Eigentums-Rechte: nicht erforderlich
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  • All moral rights asserted. Recolouring or alterationof the image is prohibited without permission.
  • not available outside AT,CH,DE

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