CO-EXTRUDED STONE PLASTIC COMPOSITE FOAM FLOORING AND METHOD OF ITS MANUFACTURING Russian patent published in 2023 - IPC B32B27/06 C08L27/06 C08K3/26 E04F15/10 

FIELD: foam flooring.

SUBSTANCE: invention relates to a stone plastic composite (SPC) foam flooring, and to a method for producing the same. The SPC foam floor covering, containing the structure of the stone plastic base material, sequentially contains from top to bottom: the first stable layer, the foam layer and the second stable layer; where the first stable layer and the second stable layer are sheets with PVC resin and powder filler as the main components, 25-40 weight fractions of PVC resins and 55-75 weight fractions filler powder; wherein said foam layer is located between said first and said second stable layers to reduce the overall density of the flooring of the rock-plastic composite foam to 1.4-1.6 g/cm³.

EFFECT: invention provides a floor covering approximately 20-30% lighter than conventional SPC flooring and also exhibits improved dimensional stability.

10 cl, 3 dwg, 1 tbl