Process for the continuous production of beverage filter bags

US6725628B2 · kind B2 · utility

Assignee

• Teepack Spezialmaschinen GmbH & Co. KG · DE

Inventors

• Wilhelm Lohrey · Meerbusch, DE
• Stefan Lambertz · Hürth, DE
• Wolfgang Groth · Wegberg, DE
• Rolf Maier · Sindelfingen, DE

Key dates

• Filing date: May 4, 2001
• Grant date: Apr 27, 2004
• Expiry date: Jun 26, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T225/325
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

This invention relates to a process for the continuous production of beverage filter bags, especially tea bags with a hanging strip made from a carrier sheet material and with at least one pocket which consists of a filter material and is closed on all sides, contains at least one portion of a beverage substance, and is connected to the hanging strip; whereby individual beverage-substance portions are deposited in a row on a continuous web of filter paper, a sleeve is formed, at least one string of consecutive, contiguous pockets, each containing one portion of the substance, is produced by individually sealing them off with a transverse seam, said transverse seam including both the trailing seam of one pocket and the leading seam of the following pocket, with perforations between the two seams along which neighboring pockets can be separated in the course of the process; the individual pocket is separated from the string of pockets; the pocket separated from the string of pockets is connected to a hanging-strip supply string; and the hanging strip is separated from the hanging-strip supply string. For the separation of a pocket from the pocket string the continuously advancing poc…