British American Tobacco (investments) Limited

Rothmans International Services Limited

Rothmans International Tobacco (uk) Limited

British American Tobacco Limited

Michael Patrick Parker

John Roger Sampson

Adrian Roy Stewart-Cox

Andrew Jonathan Bray

Martin Graham Duke

David John Bates

Theodore Roland Thomas

Jonathan Charles Laughton

Andrew Bray

A rigid of smoking articles is made to have improved shelf life and to be resealable. A barrier material is sealed around the rigid pack. The rigid pack has a potential or actual access aperture extending from a top face into a major face. The barrier material has a line of severance or weakening defining a flap, which is in register with the potential or actual access aperture. Over the flap is a layer which overlaps it on each severable side with a portion having permanently-tacky adhesive. A non-adhered pull tab is preferably provided on the layer. To open the pack the user lifts the flap and if necessary the access aperture. After removal of a smoking article the gap in the barrier layer is reclosed and released by the repositioning of the adhesive layer, carrying with it the flap of barrier material. A machine for assembling the pack is also disclosed.

Packaging of smoking articles

A label ( ) for resealing an enclosure of a cigarette pack is provided with a pull tab ( ) defined by a cut ( ) through one layer ( ) of a two-layer structure ( ), the tab surface ( ) being non-adhesive but at least part of the corresponding surface of the major portion of the label being permanently tacky ( ).

Label for resealing a pack of smoking articles

A rigid pack of smoking articles is made to have improved shelf life and to be resealable. A barrier material is sealed around the rigid pack. The rigid pack has a potential or actual access aperture extending from a top face into a major face. The barrier material has a line of severance or weakening defining a flap, which is in register with the potential or actual access aperture. Over the flap is a layer which overlaps it on each severable side with a portion having permanently-tacky adhesive. A non-adhered pull tab is preferably provided on the layer. To open the pack the user lifts the flap and if necessary the access aperture. After removal of a smoking article the gap in the barrier layer is reclosed and resealed by the repositioning of the adhesive layer, carrying with it the flap of barrier material. A machine for assembling the pack is also disclosed.

A pack for cigarettes and like smoking articles has a frame (,) outside the charge of cigarettes but inside a flexible wrap, which is preferably a sealed enclosure of a barrier material such as a metal/plastic laminate, or metallized foil. The inner frame which is not rigid since its side (,) and end (,) flaps are free except where attached to a major panel (,) acts to collate and protect the charge of cigarettes and to allow heat-sealing or other sealing pressure to be exerted more efficiently than would otherwise be possible.

Packaging for smoking articles with sealed enclosure

Cigarette pack

A machine and method for packaging smoking articles provides an essentially hermetic enclosure of a barrier material around a charge of such articles in an open (incomplete) frame, by driving on the articles themselves to push them through a temporary wall of the barrier material with the previous imposition on them of the open frame at a framing station. Preferably the driving is by means of an indexing conveyor which is stationary immediately before the collection of the charge from a hopper, during the imposition of the frame and immediately before pushing the frame and charge through the temporary wall.

Machine and process for packing smoking articles

A lightweight cigarette filter including a filter element containing filter material having a total Denier of less than 35,000 or a bulk density of less than 0.12 gcm.sup.-3 in which part of the volume of the filter is occupied by a space filler impervious to smoke flow therethrough and the bulk density of which is less than the bulk density of the equivalent amount of filter material which it replaces.

Lightweight cigarette filter and cigarettes incorporating such filters

Apparatus for the separation of heavy and light particles from material which includes means for fluidising and agitating the material to cause heavy particles to sink from the acceptable material and comprising a deck adapted to receive material at a reception end and means for vibrating said deck to cause the material to move longitudinally along it to a discharge end, said deck having a number of longitudinally extending troughs separated by peaks and means for providing an upwardly directed air flow in the troughs characterised by means for causing two or more stratified material separation zones in each trough to classify the material two or more times.

Method and apparatus for separation of heavy and light particles from

A method of separating objectionable particles from host tobacco material which includes fluidizing the tobacco material with a fluidizing air stream to allow heavy unwanted particles to fall, to cause light unwanted particles to rise and be air transported away and to leave a carpet of acceptable material.

Growing community of inventors

Leighton Buzzard, United Kingdom

Michael Patrick Parker