专利名称：Process and apparatus for applying rigidity
strips to a foil web
发明人：Oskar Karolyi申请号：US10808596申请日：20040325
公开号：US20040244900A1公开日：20041209
专利附图：
摘要：A process and apparatus are provided for applying double-layered rigiditystrips to a sealable foil web which is transported in sequences. V-shaped loops areformed at predetermined foil sections set at a distance from one another in the web
transport direction. The sides of the loops are subsequently sealed together in such away that the thus formed rigidity strips, extending transversely to the direction oftransport, project collar-like from the foil web. Each foil section at which a loop is formed,a controlled auxiliary loop is arranged which serves for adaptation to changes in formatregarding the distances between the foil sections. A drum, having a relatively largediameter serves as a transport roller, which drum has devices arranged around itscircumference for the purpose of forming a plurality of loops and auxiliary loops.
申请人：KAROLYI OSKAR
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