| abstract |
A synthetic closure for a container containing a product, constructed to be inserted and securely retained in a mouth-forming neck of said container, said closure comprising at least a) a core element comprising at least one thermoplastic polymer; wherein the thermoplastic polymer comprised in the core element is a low-density polymer having a non-foamed density in the range of 0.7 g / cm3 to 1.5 g / cm3, and b) at least one peripheral layer surrounding at least partially and which is intimately attached to at least one surface of the core element, said peripheral layer comprising at least one thermoplastic polymer, wherein the synthetic closure is formed by means of extrusion; and at least one of the core element and the peripheral layer comprises a foamed material, characterized in that the synthetic closure comprises cork powder, wherein said cork powder is comprised in the peripheral layer or in the core element and in the layer. peripheral. |