Smoking rod wrapper

Claim 3

A method according to claim 1, wherein the additive comprises a stable nicotine salt.

Claim 4

A method according to claim 2, in which the stable nicotine salt is nicotine tartrate or nicotine hydrogen tartrate.

Claim 5

A method according to claim 1, in which the ink contains a component the presence of which promotes the transfer of the additive into the main stream smoke.

Claim 6

A method according to claim 4, wherein the component is a different one of the additives.

Claim 7

A method according to claim 4, in which the additive is a stable nicotine salt and the component has an affinity for free base nicotine.

Claim 8

A method according to claim 6, in which the component is docosene.

Claim 9

A method according to claim 1, wherein two different additives are incorporated in the same ink.

Claim 10

A method according to claim 1, wherein two additives are separately incorporated in different inks which are printed on the wrapper in two different series of dots.

Claim 11

A method according to claim 1, wherein the ink contains a hydrophilic vehicle.

Claim 12

A method according to claim 10, in which the hydrophilic vehicle is one, or a mixture, of water, ethyl alcohol, and isopropyl alcohol.

Claim 13

A method according to claim 1, in which the ink contains a filler.

Claim 14

A method according to claim 12, in which the filler is calcium carbonate, titanium dioxide, silicon dioxide or a silicate such as Bentonite.

Claim 15

A method according to claim 1, wherein the ink contains a thickening agent.

Claim 16

A method according to claim 14, in which the thickening agent is carboxymethyl cellulose, polymethyl hydroxy cellulose, polyethyl hydroxy cellulose, or hydroxy propyl cellulose.

Claim 17

A method according to claim 1, wherein the additive is concentrated at that end of the wrapper which is to be at the lit end of the smoking rod.

Claim 18

A method according to claim 16, wherein the additive concentration is determined by varying the dot size or dot height.

Claim 19

A method according to claim 16, wherein the additive concentration is determined by controlling the dot density.

Claim 20

A method according to claim 16, wherein the additive concentration is determined by controlling the area of the wrapper surface which is printed.

Claim 21

The product produced by the process of claim 1.

Claim 24

A smoking rod of the kind comprising a filler of smoking material surrounded by a combustible tubular wrapper, the improvement wherein the filler is upgraded by the provision on the inner surface of the wrapper of a screen printed deposition of a series of discrete dots of an ink containing at least one additive selected from the group consisting of a smoke producing agent, a smoke nucleation agent, a flavouring agent, and a physiologically active agent, which will in use, upon approach of the hot burning tip of the smoking rod, be transferred and contribute to the main stream smoke drawn through the rod to enhance the satisfaction to the smoker, wherein the dots are printed over a selected area of the wrapper to provide a greater concentration of the additive at that end of the rod to be the lit end of the rod.

Claim 25

A smoking rod of the kind comprising a filler of smoking material surrounded by a combustible tubular wrapper, the improvement wherein the filler is upgraded by the provision on the inner surface of the wrapper of a screen printed deposition of a series of discrete dots of an ink containing at least one additive selected from the group consisting of a smoke producing agent, a smoke nucleation agent, a flavouring agent, and a physiologically active agent, which will in use, upon approach of the hot burning tip of the smoking rod, be transferred and contribute to the main stream smoke drawn through the rod to enhance the satisfaction to the smoker, wherein the dots are printed over a selected area of the wrapper to provide a greater concentration of the additive at that end of the rod to be the lit end of the rod.