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    • 2. 发明授权
    • Flooring material
    • US11821219B2
    • 2023-11-21
    • US16840691
    • 2020-04-06
    • ALTRO LIMITED
    • Martin David CallisRichard John PeaceLaura YatesOliver FassauerBernhard JungWilfried Spitz
    • E04F15/22B32B3/06B32B3/30B32B27/06E04F15/02E04F15/10
    • E04F15/22B32B3/06B32B3/30B32B27/065E04F15/02172E04F15/107B32B2307/40B32B2307/724B32B2419/04
    • The invention provides a ventilating synthetic floor-covering comprising a ventilating support layer and one or more synthetic layers wherein the ventilating support layer comprises a plurality of studs between which narrow ventilation channels are formed even when the floor-covering is compressed in normal use wherein the narrow ventilation channels have a width which is less than a principal dimension of the studs; a ventilating support layer; a production line for use in the preparation of a ventilating support layer wherein the ventilating support layer comprises a support layer and a plurality of studs wherein the production line comprises an embossing roller for embossing the plurality of studs on the support layer or a printing roller for printing the plurality of studs on the support layer wherein narrow ventilation channels are formed between the plurality of studs and wherein the narrow ventilation channels have a width which is less than a principal dimension of the studs; and a method of preparing a synthetic floor-covering according to the invention which method comprises a step of providing a synthetic floor-covering comprising an upper layer and a support layer; and one of the following steps:



      (a) embossing the support layer to form a plurality of studs between which one or more narrow ventilation channels are formed;
      (b) embossing the upper layer before embossing the support layer to form a plurality of studs between which one or more narrow ventilation channels are formed;
      (c) embossing the support layer to form a plurality of studs between which one or more narrow ventilation channels are formed before embossing the upper layer;
      (d) embossing the support layer and the upper layer at the same time wherein the support layer is embossed to form a plurality of studs between which one or more narrow ventilation channels are formed; or
      (e) applying one or more studs by printing to form a plurality of studs between which one or more narrow ventilation channels are formed;

      wherein the narrow ventilation channels have a width which is less than a principal dimension of the studs.