Packaging machine
Assignee501 Multivac Sepp Haggnemuller KG
InventorsEmmerich Medwed, Engelbert Wiest
Life of this patent
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Abstract
A packaging machine comprises a deep drawing station for deep drawing containers in a film sheet and a sealing station for sealing filled containers by means of a cover sheet. For obtaining a reclosable package means are provided for forming protuberances in the edge of the packages, wherein the protuberances cooperate for reclosing the container.
Claims14
Packaging machine comprising a sealing station for sealing a filled container having an edge surrounding said container and defining an edge plane, said sealing station having means for supplying a cover sheet to said container and sealing said cover sheet to said edge, means for forming reclosable closures in said cover sheet and container edge, said means comprising means forming at least one protuberance in said cover sheet and edge, said protuberance projecting from said edge plane, and means for backforming a central region of said protuberance towards said edge plane such that an edge region of said backformed protuberance substantially converages from said edge towards said central region.
A method for producing a reclosable package comprising the steps of
- forming in a bottom sheet a container having a surrounding edge defining an edge plane,
- closing said container by means of a cover sheet sealed to said edge,
- deforming at least one portion of said edge to form a protuberance projecting from said edge plane in both sheets, and
- backforming a central region of said protuberance towards said edge plane such that an edge region of said backformed protuberance substantially converges from said edge towards said central region to thereby form reclosable closures in said cover sheet and container edge.
Dependencies are inferred from the claim text.