Smoking articles

There is disclosed a method of operating on a cigarette, which comprises a tobacco rod and a filter element interattached by a thermoplastic tipping wrapper, to allow for the ingress of ventilation air. The filter element also comprises ventilation duct(s) extending therewithin. A heated former is b...

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Bibliographische Detailangaben
Hauptverfasser:	LUKE, JOHN A
Format:	Patent
Sprache:	eng
Schlagworte:	CIGARETTES CIGARS HUMAN NECESSITIES MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES MOUTHPIECES FOR CIGARS OR CIGARETTES SMOKERS' REQUISITES TOBACCO TOBACCO SMOKE FILTERS
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Beschreibung
Zusammenfassung:	There is disclosed a method of operating on a cigarette, which comprises a tobacco rod and a filter element interattached by a thermoplastic tipping wrapper, to allow for the ingress of ventilation air. The filter element also comprises ventilation duct(s) extending therewithin. A heated former is brought into contact with the tipping wrapper in such a way as to form indentations which intersect with a ventilation duct(s) of the filter element and to seal upstream end portions thereof.