Manufacturing container or tube from paper; or other manufacturi – Cigarette filter making – With shaping or compacting of filter material
Patent
1984-01-16
1986-03-25
Gilden, Leon
Manufacturing container or tube from paper; or other manufacturi
Cigarette filter making
With shaping or compacting of filter material
493 43, A24C 550
Patent
active
045780536
ABSTRACT:
For the manufacture of filter rod, filtration material and plugwrap being a thermally mouldable paperlike material, are fed, continuously to a rod maker, said plugwrap and rod being brought into contact with a heated moulding means to produce an impression in the peripheral surface of said plugwrap whilst preserving the continuity of the said wrap. The plugwrap includes not less than 25%, suitably 45 to 95%, by weight of synthetic thermoplastic material. At least a substantial proportion of the said thermoplastic material may be in the form of fibrillated fibre. The thermoplastic material may comprise polyethylene and/or cellulose acetate. The thickness of the plugwrap advantageously does not exceed 140 microns and its permeability prior to contact with said heated moulding means does not exceed 100 Coresta Units. By the said impression, the plugwrap is transformed from a paperlike material to a filmlike material of reduced permeability. The rod may be cut into discrete lengths thereof before it is brought into contact with said heated moulding means.
REFERENCES:
patent: 4024001 (1977-05-01), Lyon
patent: 4075936 (1978-02-01), Berger
patent: 4164438 (1979-08-01), Lebet
patent: 4436517 (1984-03-01), Lebet
British-American Tobacco Company Limited
Gilden Leon
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