A method and an apparatus form aluminium screw capsules with a safety ring made of synthetic plastics for tamperproof closing of containers. An aluminium capsule body is inserted into a moulding cavity Of a mould conformed and arranged for the overmoulding of a safety ring on an edge of an annular wall of the capsule body. An annular sealing zone is defined for the synthetic plastic material between a first surface of the capsule body and a mould first portion inserted into the central cavity of the capsule body to form a safety ring anchored to the capsule body.

Disclosed herein is a resin composition for injection-molding in which an ethylene-based resin is melt-mixed to be excellent in ductile property and impact property, excellent in environmental stress crack resistance, and low in an overall migration, and thus may be widely used as a food and drug container or a stopper. The present invention provides a resin composition for injection-molding formed by melt-mixing 80-90 wt % of a linear low density polyethylene having a melt flow index of 15-30 dg/min (190 C., 2.16 kg) and 10-20 wt % of an ethylene-alpha-olefin copolymer resin having a melt flow index of 10-20 wt %.

A method of forming a molded device, such as a stopper, requiring minimal post-molding processing includes providing a four-plate mold assembly (52) having top plate (54), a sprue/vent plate (56) including a core portion (62), a main plate (58) including a recess (66) defining a mold cavity (68) having a contoured surface (70), and a bottom plate (60), closing the mold assembly (52) such that the core portion (62) enters into the recess (66) in the main plate (58) to define a space (72) corresponding to the shape of the stopper (10, 110) to be molded. A polymeric material is introduced into the mold cavity (68) to form the stopper (10, 110). A barrier layer (14, 114) can be inserted between the main plate (58) and bottom plate and adhered to the molded device (10, 110). The plates are opened and the molded device is removed.

A cap for a container comprises: a body, configured to be coupled and uncoupled relative to the neck of the container and including a side wall, which extends around a longitudinal axis, and a transverse wall; a tamper evident ring, configured to remain anchored to the neck of the container even when the body is uncoupled from the neck and including a joining portion where the tamper evident ring is joined to the body, the joining portion being configured to be torn along a full perimeter surrounding the longitudinal axis, wherein the cap comprises a connecting band having a first end connected to the side wall of the body and a second end connected to the retaining portion of the tamper evident ring.

A method of forming a nipple for a baby bottle, comprises: forming a lower conical wall section; forming a higher conical wall section molded above the lower conical wall section; preventing deformation of the higher conical wall section; and cutting an opening through the higher conical wall section into an interior section of the nipple.

A plug including a hub which extends along a central axis and is defined radially by a side wall wherein an annular groove is formed, which receives a sealing member, the groove provided between a bottom wall and first annular edge wall, and a second annular edge wall, which axially define the groove, the hub being formed by the combination of a first hub section on which the first edge wall is formed, and a second hub section on which the second edge wall is formed, the first hub section and the second hub section being assembled so that they meet at a gasket face which is secant to the central axis and the bottom wall of the groove, so the line of the intersection of the gasket face with the bottom wall is contained axially between the first and second edge wall over the entire perimeter of the groove.

The concepts herein relate to a closing element (1) for containers for liquids, in particular bottles. The closing element (1) comprises at least a cork sheet (2) having two opposite main faces (2a, 2b) and at least a layer of insulating material (7), impermeable to liquids and to air and/or gases, coupled to the cork sheet (2). The layer of insulating material (7), at least partly covers at least one of said two main faces (2a, 2b). The cork sheet (2) and the layer of insulating material (7) are rolled so as to define the closing element (1) by an alternated winding of the cork sheet (2) and the layer of insulating material (7), and the layer of insulating material (7) and the alternated winding are configured and predisposed to make the closing element (1) impermeable or to liquids and air and/or gases. The mechanical winding is guaranteed by a partial and spotted gluing of the surfaces, usually only at the external end thereof.

A biodegradable and/or compostable device is formed of a plant-based biopolymer in a range of 50 to 80% by volume and a polylactic acid (PLA) in a range of 10 to 30% by volume.

An injection molded closure article comprising a composition blend of: (a) at least one substantially linear polyolefin elastomer component which has a melt index of, for example, from 0.5 dg/min to 40 dg/min and a density of, for example, from 0.850 g/cc to 0.910 g/cc; and (b) at least one neutralized ethylene acid copolymer resin component which has a melt index of, for example, from 0.5 dg/min to 25 dg/min, and is at least partially neutralized at a range of from 20% to 70% neutralization; a molded closure article produced from the above composition blend, wherein the molded closure article has a high gloss, low haze, high impact resistance, and high chemical resistance; and a process of manufacturing the above molded closure article.

A cap for a container comprises: a body, configured to be coupled and uncoupled relative to the neck of the container and including a side wall, which extends around a longitudinal axis, and a transverse wall; a tamper evident ring, configured to remain anchored to the neck of the container even when the body is uncoupled from the neck and including a joining portion where the tamper evident ring is joined to the body, the joining portion being configured to be torn along a full perimeter surrounding the longitudinal axis, wherein the cap comprises a connecting band having a first end connected to the side wall of the body and a second end connected to the retaining portion of the tamper evident ring.