Method of forming and inserting filter elements in cup-shaped containers

• Main Authors: Gordon, Steven J, Sweeney, Richard P, Christopher, Anthony J, Anderson, Brett, Boccuti, A. David, Walsh, Kevin, Sallum, Hani, Ramler, David, Wolf, Jim, Helmbrecht, Mike
• Format: Patent
• Language: English
• Published: 27.08.2002

This invention relates generally to beverage filter cartridges of the type disclosed in U.S. Pat. No. 5,840,189 (Sylvan et al.), the disclosure of which is herein incorporated by reference in its entirety, and is concerned in particular with an improved method of forming and inserting the filter elements into the cup-shaped containers of such cartridges. A method of forming and inserting filter elements into cup-shaped containers comprises the steps of:a) folding a continuous web of filter material into two adjacent plies which have separable upper edges and are joined one to the other along a bottom fold line;b) blanking the adjacent plies to form their upper edges into a scalloped pattern;c) inserting carrier mandrels between the adjacent plies;d) joining the adjacent plies along seams extending transversely with respect to the bottom fold line to form a series of collapsed frustoconical filter elements interconnected by scrap segments and supported internally by the carrier mandrels;e) separating the filter elements one from the other by blanking and removing the scrap segments;f) transferring the filter elements from the carrier mandrels into cup-shaped containers arranged therebeneath; andg) securing the thus inserted filter elements to interior surfaces of the cup-shaped containers.