A primary carpet backing including a structure of at least three layers, wherein a first layer and a third layer including a nonwoven layer of fibers, and wherein a second layer which includes a reinforcement layer of fibers and is located between the first and the third layer, wherein the nonwoven layer of fibers of the first layer has an air permeability of at most 8000 L/m2·s and the nonwoven layer of fibers of the third layer has an air permeability of at least 1000 L/m2·s measured according to ISO 9237:1995, wherein the nonwoven layer of fibers of the first layer has a lower air permeability as the nonwoven layer of fibers of the third layer.
PRIMARY CARPET BACKING
PRIMÄRER TEPPICHGRUND
DOSSIER DE TAPIS PRIMAIRE
2022-03-30
Patent
Electronic Resource
English
IPC: | D06N WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL , Wand-, Fußboden- oder ähnliche Belagstoffe, z.B. Linoleum, Wachstuch, Kunstleder, Dachpappe, bestehend aus einem mit einer Schicht aus makromolekularem Material überzogenen Fasergewebe / A47G Haushalt- oder Tafelausstattung , HOUSEHOLD OR TABLE EQUIPMENT / 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 / B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet / D04H Herstellen von flächigem Textilgut, z.B. aus Fasern oder fadenförmigem Material , MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL |