Method of and apparatus in a filter tipping machine for manipulating in a web

US6229115A · kind A · utility

Assignee

• HAUNI MASCHINENBAU GMBH · DE

Inventors

• Helmut Voss · Hamburg, DE
• Manfred Dombek · Dassendorf, DE

Key dates

• Filing date: Mar 23, 2000
• Grant date: May 8, 2001
• Expiry date: Mar 23, 2020

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23K26/066
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

A running web of tipping paper (one side of which is coated with a film of adhesive) in a filter cigarette making machine is subdivided into discrete uniting bands and/or is perforated by resorting to a single source or to two discrete sources of coherent radiation. Each source is associated with a control unit which initiates the emission of short-lasting flashes of coherent radiation. Such radiation is caused to impinge upon a diffractive focusing lens which focuses coherent radiation upon one or more masks having openings for coherent radiation which is to sever the web along transversely extending linear zones and/or to provide the web with desired arrays of perforations. The perforations permit atmospheric air to enter the column of tobacco smoke in a filter cigarette wherein the tobacco-containing portion and the filter mouthpiece are united by a perforated adhesive-coated uniting band.