Plastic closure device for tubular bags
AssigneeRobert Bosch GmbH
InventorDan Barron
Life of this patent
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Abstract
A plastic closure device (1) must be welded by means of ultrasound onto a tubular bag (2) consisting of a multilayer plastic film (20). For this purpose, an energy introduction arrangement (182) on the underside (180) of a flange (18) is proposed, in which at least one energy conduction rib (183) concentric with the outer edge (181) of the flange is present, as well as a plurality of outwardly-directed energy conduction ribs (184). These energy conduction ribs can intersect in the region of intersection (185) or they can be interrupted in the region of intersection.
Claims14
A tubular bag apparatus comprising a tubular bag (2) consisting of multilayer plastic film, a plastic closure device (1) comprising a bottom part (10) having a spout (14) and a flange (18), and an energy introduction arrangement (182), which is connected to a plastic layer of the tubular bag (2), being located on a flange underside (180) of said flange, wherein the energy introduction arrangement (182) has at least one energy-conducting rib (183) which extends concentrically with respect to a peripheral flange rim, characterized in that the at least one concentric energy-conducting rib (183) intersects a multiplicity of energy-conducting ribs (184) which extend and are oriented outwardly and which extend as far as the peripheral flange rim (181).
Dependencies are inferred from the claim text.