The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 2001
Filed:
Jun. 04, 1999
Manfred Dombek, Dassendorf, DE;
Helmut Voss, Lokstedt, DE;
Hauni Maschinenbau AG, Hamburg, DE;
Abstract
An elongated strip of tipping paper is advanced in a tipping machine for the making of filter cigarettes. The strip advances past a perforating unit and thereupon past a cutting unit which subdivides the perforated strip into a series of uniting bands ready to be convoluted around abutting ends of plain cigarettes and filter rod sections. One side of the strip is coated with a film of an adhesive which can be inactivated by exposing it to coherent radiation. The perforating and cutting steps are carried out by one or two beams of coherent radiation which can further serve to inactivate the adhesive around each perforation and along the edges which extend across the strip to thus reduce the likelihood of penetration of active adhesive into the perforations and/or a contamination of the products by active adhesive being expelled beyond the marginal portions of the uniting bands. A single source can suffice to furnish coherent radiation for the carrying out of the perforating, cutting and inactivating operations.