Stopper of foamed thermoplastic synthetic material
Assignee“P1”Handels GmbH
InventorGerhard Piriwe
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Abstract
A stopper of foamed thermoplastic synthetic material for sealing bottles containing foodstuffs or beverages, with an inorganic pigment which is resistant to and suitable for foodstuffs and which changes color under the influence of heat being added to the synthetic material. A method of applying a cork stamp on the stopper which is exposed to the action of heat to color-activate the pigment in areas corresponding to a given pattern of a cork stamp.
Claims7
A stopper of foamed thermoplastic synthetic materials for sealing bottles containing liquid foodstuffs or beverages, comprising an inorganic pigment and a predetermined pattern of color visible on an outer surface of the stopper, wherein the predetermined pattern is made by heating the inorganic pigment.
Dependencies are inferred from the claim text.