A pour spout that is sufficiently rigid to be prevented from breaking due to ultrasonic vibrations during welding and that is readily separated from a packaging container being broken down, and a packaging container with the pour spout. The pour spout includes a cylindrical sidewall and a disk-like flange extending outwardly from one end of the sidewall. The flange has a to-be-cut portion that is a recess arranged annularly, and a rib disposed at an annular projection or at the to-be-cut portion.

A pour spout that is sufficiently rigid to be prevented from breaking due to ultrasonic vibrations during welding and that is readily separated from a packaging container being broken down, and a packaging container with the pour spout. The pour spout includes a cylindrical sidewall and a disk-like flange extending outwardly from one end of the sidewall. The flange has a to-be-cut portion that is a recess arranged annularly, and a rib disposed at an annular projection or at the to-be-cut portion.

A container and closure combination, for the containment of fluids and extraction therefrom by way of an extraction tube. The container comprises a closed volume with an opening configured to close the opening of the container; the closure is provided with an aperture such that the closure, upon fitment to the container opening, cannot be removed therefrom. The aperture of the closure comprises a unitary elastic unidirectional valve member that can operate in a first, closed condition, to prevent a flow of fluid from the container; and a second, operational condition, with an extraction tube sealingly engaged with respect to the valve, to permit an extraction of fluid from the container through the tube.

A container and closure combination, for the containment of fluids and extraction therefrom by way of an extraction tube. The container comprises a closed volume with an opening configured to close the opening of the container; the closure is provided with an aperture such that the closure, upon fitment to the container opening, cannot be removed therefrom. The aperture of the closure comprises a unitary elastic unidirectional valve member that can operate in a first, closed condition, to prevent a flow of fluid from the container; and a second, operational condition, with an extraction tube sealingly engaged with respect to the valve, to permit an extraction of fluid from the container through the tube.

A membrane for use with a container is provided herein. The membrane comprises a first layer comprising a peripheral area defined by a first perimeter of the first layer, and a first line of weakness formed inward of the first perimeter. The first line of weakness defines a flap. The membrane further comprises a second layer comprising a peripheral zone defined by a second perimeter of the second layer and a second line of weakness formed inward of the second perimeter. The second line of weakness defines a central portion. The membrane further comprises a first seal area comprising at least a portion of the peripheral zone of the second layer being adhered to at least a portion of the peripheral area of the first seal area.

A membrane for use with a container is provided herein. The membrane comprises a first layer comprising a peripheral area defined by a first perimeter of the first layer, and a first line of weakness formed inward of the first perimeter. The first line of weakness defines a flap. The membrane further comprises a second layer comprising a peripheral zone defined by a second perimeter of the second layer and a second line of weakness formed inward of the second perimeter. The second line of weakness defines a central portion. The membrane further comprises a first seal area comprising at least a portion of the peripheral zone of the second layer being adhered to at least a portion of the peripheral area of the first seal area.

A container and closure combination, for the containment of fluids and extraction therefrom by way of an extraction tube. The container comprises a closed volume with an opening configured to close the opening of the container; the closure is provided with an aperture such that the closure, upon fitment to the container opening, cannot be removed therefrom. The aperture of the closure comprises a unitary elastic unidirectional valve member that can operate in a first, closed condition, to prevent a flow of fluid from the container; and a second, operational condition, with an extraction tube sealingly engaged with respect to the valve, to permit an extraction of fluid from the container through the tube.

A container and closure combination, for the containment of fluids and extraction therefrom by way of an extraction tube. The container comprises a closed volume with an opening configured to close the opening of the container; the closure is provided with an aperture such that the closure, upon fitment to the container opening, cannot be removed therefrom. The aperture of the closure comprises a unitary elastic unidirectional valve member that can operate in a first, closed condition, to prevent a flow of fluid from the container; and a second, operational condition, with an extraction tube sealingly engaged with respect to the valve, to permit an extraction of fluid from the container through the tube.

A reusable pour spout system that may be attached to different container types to dispense different substances, including course and fine granular materials and liquids. A port component has a proximal tubular end and a flange that is larger than the tubular end. The flange further includes a hole-cutting structure adapted to pierce the wall of a container, with a cutting edge adapted to form a hole in the container when the port component is rotated by a user after piercing. This positions the flange within the container with the tubular end exposed to receive a nut that traps the wall of the container between the nut and the flange. A cap is provided to seal off the port. The tubular end of the port component, the nut, and the cap may all be threaded. Different structures to enhance cutting and sealing are disclosed along with preferred method steps.

A reusable pour spout system that may be attached to different container types to dispense different substances, including course and fine granular materials and liquids. A port component has a proximal tubular end and a flange that is larger than the tubular end. The flange further includes a hole-cutting structure adapted to pierce the wall of a container, with a cutting edge adapted to form a hole in the container when the port component is rotated by a user after piercing. This positions the flange within the container with the tubular end exposed to receive a nut that traps the wall of the container between the nut and the flange. A cap is provided to seal off the port. The tubular end of the port component, the nut, and the cap may all be threaded. Different structures to enhance cutting and sealing are disclosed along with preferred method steps.