A thermally insulating sheet formed by a down core structure which is comprised solely of down feather material mixed with binding material which is heat fused together to form a homogeneous sheet core. The method of fabricating the homogeneous thermally insulating sheet to form the down core structure is described. This novel method restrains the down clusters and binding material during the process of mixing, depositing, conveying and heat fusing to form a homogeneous down core sheet. The down core structure is subjected to two separate heat treatments which produces a down core sheet having at least some of its outer surfaces being of higher bond density than the inside of the core.
Thermally insulating sheet formed from a down core structure and method of fabrication
16.03.2021
Patent
Elektronische Ressource
Englisch
IPC: | B05D PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL , Verfahren zum Aufbringen von Flüssigkeiten oder von anderen fließfähigen Stoffen auf Oberflächen allgemein / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B68G Verfahren, Ausrüstung oder Maschinen zum Verwenden in der Polsterei , METHODS, EQUIPMENT, OR MACHINES FOR USE IN UPHOLSTERING / D04H Herstellen von flächigem Textilgut, z.B. aus Fasern oder fadenförmigem Material , MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL |
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