Cigarette filter and filter cigarette
AssigneeSigarettenfabriek Ed. Laurens B.V.
InventorsHendrikus J. Koster, Johannes T. J. Bik, Johannes G. Clardey, Dirk Smorenberg
Life of this patent
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Abstract
A filter to be mounted to a cigarette and provided with one or more axial channels made by means of a laser beam, as well as a cigarette provided with such a filter.
Claims8
A method of making a filter to be mounted on a cigarette, in which filter there is provided at least one axial channel comprising providing a rod of fibrous material and burning therethrough one or more channels by means of a laser beam.
A cigarette filter comprising a body of fibrous material enclosed in a wrapping material, said fibrous material having one or more axial channels therethrough with a hardened inner channel wall resulting from the melting of the filter material by producing the filter by laser means.
A cigarette filter rod to be cut into cigarette filters comprising an elongated body of fibrous material enclosed in a wrapping material with one or more axial channels through the body of fibrous material having a hardened inner channel wall resulting from melting of the fibrous material by burning the channel through the fibrous material by laser means.
A cigarette double filter comprising a body of fibrous material enclosed in a wrapping material in which the portion of the filter to be attached to a cigarette has one or more axial channels with a hardened inner channel wall resulting from melting the filter material in producing the channel by laser means.
A cigarette filter according to claim 4, 5 or 8 wherein the fibrous material is cellulose acetate.
Dependencies are inferred from the claim text.