US3709232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making tobacco webs and strings
Assignee: Arenco AB
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Filing: 1970-12-14
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Granted: 1973-01-09
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Expires: 1990-12-14
Abstract
Abstract Lengthy tobacco webs or strings are formed of a pasty mass which contains finely disintegrated tobacco by introducing said mass in a gap between at least two rolls or the like of a pair of rolls, those surfaces of which, which are in engagement with the tobacco mass, travel in closed trajectories. The tobacco webs or strings are made to follow a predetermined one of said surfaces and to come loose from the other surface by intentionally selecting as said predetermined surface a surface having a greater adhesiveness in respect of said tobacco mass than the other surface in the respective pair of rolls.
Inventors
- 👤 L Lilja
- 👤 E Wallberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:04
CPC Classifications
A; A24; A24B; A24B3/00; A24B3/14
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
209 words
A method of manufacturing tobacco foils comprising: feeding a pasty tobacco mass, which comprises finely disintegrated tobacco and a liquid and has a moisture content below 50 per cent by weight based on the weight of the moist pasty tobacco mass, into A gap formed by a first roll and a second roll which are rotatably journalled on adjacent, mutually parallel axes; rotating said first roll in a predetermined direction at a predetermined circumferential velocity; rotating said second roll in the opposite direction with respect to said first roll and at a circumferential velocity higher than that of said first roll to thereby roll said pasty tobacco mass into a foil which comes loose from said first roll and adheres to the circumferential surface of said second roll; conveying said tobacco foil by means of said second roll into a second gap which is formed by said second roll and an endless conveyor; and transferring said tobacco foil in said second gap to said conveyor by advancing the conveyor at a substantially higher velocity than and in the same direction as the circumferential surface of said second roll in said second gap, and conveying the resulting rolled tobacco foil to a collecting station by means of said endless conveyor.
Claim 2
Independent Claim
209 words
A method of manufacturing tobacco foils comprising: feeding a pasty tobacco mass, which comprises finely disintegrated tobacco and a liquid and has a moisture content below 50 per cent by weight based on the weight of the moist pasty tobacco mass, into A gap formed by a first roll and a second roll which are rotatably journalled on adjacent, mutually parallel axes; rotating said first roll in a predetermined direction at a predetermined circumferential velocity; rotating said second roll in the opposite direction with respect to said first roll and at a circumferential velocity higher than that of said first roll to thereby roll said pasty tobacco mass into a foil which comes loose from said first roll and adheres to the circumferential surface of said second roll; conveying said tobacco foil by means of said second roll into a second gap which is formed by said second roll and an endless conveyor; and transferring said tobacco foil in said second gap to said conveyor by advancing the conveyor at a substantially higher velocity than and in the same direction as the circumferential surface of said second roll in said second gap, and conveying the resulting rolled tobacco foil to a collecting station by means of said endless conveyor.
Claim 3
Dependent Claim
30 words
A method according to claim 1 wherein the ratio between the circumferential velocities of said first roll, said second roll and said transfer roll are 1:1.5 to 5:4 to 12.
Claim 4
Dependent Claim
15 words
A method according to claim 2 wherein the ratio between the circumferential velocities is 1:3:9.
Claim 5
Dependent Claim
19 words
A method according to claim 1 wherein the circumferential velocity of said first roll is 0.9 to 9 m/min.
Claim 6
Dependent Claim
44 words
A method according to claim 1 wherein said endless conveyor is a band of stainless steel, which runs over a transfer roll and in cooperation with said second roll defines said second gap which is formed between said transfer roll and said second roll.
Claim 7
Independent Claim
159 words
A method of manufacturing tobacco foils comprising: feeding a pasty tobacco mass, which comprises finely disintegrated tobacco and a liquid and has a moisture content below 50 per cent by weight based on the weight of the moist pasty tobacco mass, into a roll nip formed by a first roll and an endless conveyor formed by a plurality of wires having a greater adhesiveness than said first roll to said pasty tobacco mass, so that said mass adheres to said wires and comes loose from said first roll; conveying said wires in closed trajectories over a second roll adjacent to said first roll and a third roll, for rolling said pasty tobacco mass into filaments between said first roll on one hand and said wires and said second roll on the other hand; conveying said tobacco filaments from said roll nip toward said third roll; separating said tobacco filaments from said wires; and collecting the resulting separated tobacco filaments.
Claim 8
Independent Claim
159 words
A method of manufacturing tobacco foils comprising: feeding a pasty tobacco mass, which comprises finely disintegrated tobacco and a liquid and has a moisture content below 50 per cent by weight based on the weight of the moist pasty tobacco mass, into a roll nip formed by a first roll and an endless conveyor formed by a plurality of wires having a greater adhesiveness than said first roll to said pasty tobacco mass, so that said mass adheres to said wires and comes loose from said first roll; conveying said wires in closed trajectories over a second roll adjacent to said first roll and a third roll, for rolling said pasty tobacco mass into filaments between said first roll on one hand and said wires and said second roll on the other hand; conveying said tobacco filaments from said roll nip toward said third roll; separating said tobacco filaments from said wires; and collecting the resulting separated tobacco filaments.
Claim 9
Dependent Claim
22 words
A method according to claim 6 in which said second roll, over which the wires are conducted, has a circular-cylindrical circumferential surface.
Claim 10
Dependent Claim
36 words
A method according to claim 6 comprising the step of conducting said wires in circumferential grooves provided in the circumferential surface of said second roll and extending substantially perpendicularly to the rotational axis of the roll.
Claim 11
Dependent Claim
24 words
A method according to claim 8 in which said grooves have a profile which conforms to the shape of the cross-section of the wire.
Claim 12
Dependent Claim
45 words
A method according to claim 9 in which said grooves have a width, as measured in a direction which is parallel to the direction of the rotational axis of said second roll, which is substantially equal to the cross-dimension of said wire in said direction.
Claim 13
Dependent Claim
34 words
A method according to claim 9 in which said grooves have a depth which is substantially equal to the cross-dimension of the wire, as measured perpendicularly to the rotational axis of said second roll.
Claim 14
Dependent Claim
31 words
A method according to claim 9 in which said grooves have a depth which exceeds the cross-dimension of the wire, as measured perpendicularly to the rotational axis of said second roll.
Claim 15
Independent Claim
207 words
A method of manufacturing tobacco foils comprising: feeding a pasty tobacco mass, which comprises finely disintegrated tobacco and a liquid and has a moisture content below 50 per cent by weight based on the weighT of the moist pasty tobacco mass, into a first roll nip formed by a first roll and an endless conveyor having a greater adhesiveness to said pasty tobacco mass than said first roll; rotating said first roll in a predetermined direction at a predetermined circumferential velocity; advancing said endless conveyor in the opposite direction with respect to said first roll in said roll nip and at a velocity higher than the circumferential velocity of said first roll to thereby roll said pasty tobacco mass into a foil which comes loose from said first roll and adheres to the surface of said endless conveyor; conveying said tobacco foil by means of said endless conveyor into a plurality of further roll nips which are formed by said endless conveyor and an equal plurality of further rolls, said further rolls having less adhesiveness to said tobacco mass than said endless conveyor, for further rolling of said tobacco foil; and conveying the resulting rolled tobacco foil to a collecting station by means of said endless conveyor.
Claim 16
Independent Claim
207 words
A method of manufacturing tobacco foils comprising: feeding a pasty tobacco mass, which comprises finely disintegrated tobacco and a liquid and has a moisture content below 50 per cent by weight based on the weighT of the moist pasty tobacco mass, into a first roll nip formed by a first roll and an endless conveyor having a greater adhesiveness to said pasty tobacco mass than said first roll; rotating said first roll in a predetermined direction at a predetermined circumferential velocity; advancing said endless conveyor in the opposite direction with respect to said first roll in said roll nip and at a velocity higher than the circumferential velocity of said first roll to thereby roll said pasty tobacco mass into a foil which comes loose from said first roll and adheres to the surface of said endless conveyor; conveying said tobacco foil by means of said endless conveyor into a plurality of further roll nips which are formed by said endless conveyor and an equal plurality of further rolls, said further rolls having less adhesiveness to said tobacco mass than said endless conveyor, for further rolling of said tobacco foil; and conveying the resulting rolled tobacco foil to a collecting station by means of said endless conveyor.
Claim 17
Dependent Claim
50 words
Method according to claim 13 in which said endless conveyor is a roll having a much greater radius than said first roll and said further rolls, said endless conveyor forming said first roll nip together with said first roll and forming said further roll nips together with said further rolls.
Claim 18
Dependent Claim
113 words
Method according to claim 13 in which said endless conveyor is an endless steel belt, which is conveyed over a second roll adjacent to said first roll for forming together with said first roll said first roll nip, and over a third roll, one run of said endless conveyor being conducted between the rolls of a plurality of pairs of rolls equal in number to said further roll nips and each being compriseed of one of said further rolls and a counter roll located on the opposite side of said run with respect to its associated further roll, for pressing the steel belt against the tobacco foil in the roll nip thus formed.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |