Abstract: The subject of the invention relates to a drinking straw (10) that contains—a tubular delimiting wall (16), which has an elongate container portion (10c) and open ends (14a, 14b) at opposing sides, —a particulate product (20) disposed within the container portion (10c), which particulate product (20) contains at least one type of active ingredient for the purpose of continuous dispensing into the liquid passing through the drinking straw (10), —a liquid-permeable closing element defining the container portion (10c) and retaining the particulate product (20) in the container portion (10c), the essence of which is that the particulate product (20) contains extruded particles (20a, 20b, 20c, 20d) with a homogenous structure. The subject of the invention also relates to a method for the production of such a drinking straw (10).

Abstract: The invention relates to a drinking straw comprising: a thermoplastic wall having an elongate container portion; liquid permeable closures closing off the container portion; at least one effervescent tablet disposed within the container portion such that a clearance is left between the inner side of the wall and the at least one tablet; a hygroscopic filler disposed at both sides of the at least one tablet within the container portion.

Abstract: A drinking straw comprises a thermoplastic tube and an active ingredient in the tube, releasable in a liquid drawn through the tube. The active ingredient is held in place between branched portions of the straw defined by neighbouring recesses formed in the tube and an inner seam connecting the neighbouring recesses. The branched portions are spaced from the ends of the straw. A device and method for making the drinking straw are disclosed as well.

Abstract: A drinking straw comprises a thermoplastic tube and an active ingredient in the tube, releasable in a liquid drawn through the tube. The active ingredient is held in place between branched portions of the straw defined by neighbouring recesses formed in the tube and an inner seam connecting the neighbouring recesses. The branched portions are spaced from the ends of the straw. A device and method for making the drinking straw are disclosed as well.

Abstract: The invention relates to a drinking straw comprising: a thermoplastic wall having an elongate container portion; liquid permeable closures closing off the container portion; at least one effervescent tablet disposed within the container portion such that a clearance is left between the inner side of the wall and the at least one tablet; a hygroscopic filler disposed at both sides of the at least one tablet within the container portion.