Abstract: The disclosure relates to a cylindrical closure for a product-retaining container constructed for being inserted and securely retained in a portal-forming neck of said container, said closure comprising at least one thermoplastic polymer and at least one natural organic filler wherein the lateral surface of said closure has a hardness of 40 to 90 Shore A. Such closures are particularly suitable for sealingly closing wine bottles.

Abstract: The disclosure relates to a synthetic closure for a product-retaining container constructed for being inserted and securely retained in a portal-forming neck of said container, said closure comprising at least a core member comprising at least one cycloolefin-based copolymer.

Abstract: The disclosure relates to a closure for a container, such as, for example, a wine bottle. In one embodiment, the closure includes an oxidant releasing agent that is adapted to release oxygen into an interior portion of the container according to a predefined desired profile. In another embodiment, the closure comprises a gas containing reservoir, a membrane and a barrier layer, said membrane allowing an at least partial exchange of gas between the inside of said reservoir and the inside of said container, and said barrier layer at least partially preventing exchange of gas between the outside of said closure and the inside of said reservoir.

Abstract: The disclosure relates to a synthetic closure for a product-retaining container constructed for being inserted and securely retained in a portal-forming neck of said container, said closure comprising at least a core member comprising at least one thermoplastic polymer, and at least one peripheral layer at least partially surrounding and intimately bonded to at least one surface of the core member, said peripheral layer comprising at least one thermoplastic polymer, wherein the synthetic closure is formed by extrusion, and at least one of the core member and the peripheral layer comprises a plurality of cells, and wherein the synthetic closure comprises cork powder.

Abstract: The disclosure relates to a closure for a container, such as, for example, a wine bottle. In one embodiment, the closure includes an oxidant releasing agent that is adapted to release oxygen into an interior portion of the container according to a predefined desired profile. In another embodiment, the closure comprises a gas containing reservoir, a membrane and a barrier layer, said membrane allowing an at least partial exchange of gas between the inside of said reservoir and the inside of said container, and said barrier layer at least partially preventing exchange of gas between the outside of said closure and the inside of said reservoir.

Abstract: By securely affixing or bonding a multi-layer film to the terminating end of a closure/stopper, with the multi-layer film being constructed for promoting the transfer of all of the desirable gases, chemicals, and/or compounds while preventing the transfer of undesirable gases, chemicals, and/or compounds, a unique, closure or stopper having a sealed and/or barrier bearing terminating end is achieved. In this way, wine sealed in the wine bottle by the closure/stopper of the present invention is assured of possessing a long storage life, while also having the flavor, bouquet, taste, and quality desired for the wine fully maintained.

Abstract: By providing a synthetic closure which comprises at least one thermoplastic polymer and, as an additive, at least one fatty acid derivative, in particular a fatty acid ester or a fatty acid amide such as a stearamide, a synthetic closure is attained which achieved substantially enhanced properties. In particular, it has been found that the oxygen transfer rate of the closure is reduced substantially, thus reducing unwanted oxidation of wine. Furthermore, the use of a fatty acid derivative additive improves the performance characteristics of synthetic corks, such as extraction force, ovality control, diameter control and length control.