LUFTFILTER, LYSKILDEANORDNING OG FREMGANGSMÅDE TIL LUFTFILTERFREMSTILLING

An air filter includes a first urethane portion made of polyurethane foam and having air permeability and a second urethane portion made of polyurethane foam and disposed so as to overlap with a part of the first urethane portion. The second urethane portion is higher in density than the first ureth...

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Bibliographische Detailangaben
Hauptverfasser: MAEJIMA, Koji, MATUI, Ryotaro, HAKAMATA, Yasumasa, MURAYAMA, Kyoichi
Format: Patent
Sprache:dan
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