Abstract: The invention relates to a screw top comprising essentially two elements formed by a skirt and a sealing ring connected together in a number of places by means of small cross-elements which can be broken when unscrewing the top, characterised in that of said two elements, either the skirt (2) or the sealing ring (3) comprises prolongations (8-10) which extend sufficiently far towards and beyond the opposite element so as to prevent any deformation of the sealing ring (3) in the radial direction of the top.

Abstract: The invention relates to a pourer plug device for a receptacle having a neck which is equipped with a thermosealed lid, and comprising a plug element and a cap with a pourer aperture, characterized in that the plug element (4) comprises in its center a cylindrical core (10) which presents at its base a curing knife (14) which is able to punch said lid (2) when said cylindrical core (10) is axially displaced towards said lid (2) in response to the cap (7) being displaced towards the lid (2).

Abstract: A pouring-stopper device for a container, comprising a stopper and a cover or seal movable relative to said stopper, in which said cover and stopper are provided with complementary means preventing separating the one from the other, the first movement of said cover relative to the stopper, which follows tearing the guarantee strip away, causing piercing of a lid, said first movement simultaneously causing in said cover, an outlet to be formed for the product contained in said container.

Abstract: A cap adapted to cooperate with a container to seal and unseal the container. The cap comprises a circle-shaped knife carried by an inner surface of the cap and a lid adhesively secured to a portion of the inner surface of the cap. The container is sealed by positioning the cap over an opening of the container, which opening is defined by a container edge, and then securing the lid of the cap to the container edge by induction or conduction. The container is unsealed by exerting pressure on the cap whereby the knife cuts through the lid thereby cutting a circular portion out of the lid and unsealing the container. The circular portion cut out the lid remains adhesively secured to the cap.

Abstract: There is described a seal for container which is provided with a tear lip which is so arranged inside a space between cover and container that on the one hand any contact of the tear lip with the container be avoided, and on the other hand the tear lip lies outside the seal plane, that is outside the induction field.