US4341228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for employing tobacco dust in a paper-making type preparation of reconstituted tobacco and the smoking material produced thereby
Assignee: Philip Morris USA Inc
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Filing: 1981-01-07
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Granted: 1982-07-27
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Expires: 2001-01-07
Abstract
Abstract A method for employing tobacco dust in a paper-making process for the preparation of reconstituted tobacco is disclosed. The method for employing the tobacco dust comprises admixing tobacco dust with a bonding material to form a mixture, treating the mixture to form agglomerated particles, admixing the agglomerated particles with a tobacco-parts slurry and then forming the slurry into a sheet by means of a paper-making process, drying and then shredding the resultant reconstituted tobacco sheet. The smoking material obtained by such method is also described.
Inventors
- 👤 Gus D. Keritsis
- 👤 David A. Lowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:03
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/10; A24B15/12; A24B15/14
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
68 words
A method for employing tobacco dust in the preparation of reconstituted tobacco which comprises: (a) admixing tobacco dust with a bonding material to form a mixture; (b) treating the mixture to form water resistant agglomerated particles; (c) admixing the agglomerated particles with a tobacco-parts slurry; and (d) forming the slurry into a sheet by means of a paper-making process, drying and then shredding the resultant reconstituted tobacco sheet.
Claim 2
Independent Claim
68 words
A method for employing tobacco dust in the preparation of reconstituted tobacco which comprises: (a) admixing tobacco dust with a bonding material to form a mixture; (b) treating the mixture to form water resistant agglomerated particles; (c) admixing the agglomerated particles with a tobacco-parts slurry; and (d) forming the slurry into a sheet by means of a paper-making process, drying and then shredding the resultant reconstituted tobacco sheet.
Claim 3
Dependent Claim
22 words
The method of claim 1, wherein the bonding material and the tobacco dust are dry mixed and then added to a solvent.
Claim 4
Dependent Claim
15 words
The method of claim 1, wherein the bonding material is present in an aqueous medium.
Claim 5
Dependent Claim
44 words
The method of claim 1, wherein the agglomerated particles are admixed with the tobacco-parts slurry such that about 10 to 40% by dry weight of the total amount of agglomerated particles and tobacco-parts present in the resulting admixed slurry consists of the agglomerated particles
Claim 6
Dependent Claim
10 words
The reconstituted tobacco produced by the method of claim 1.
Claim 7
Independent Claim
66 words
A method for employing tobacco dust in the preparation of reconstituted tobacco which comprises: (a) admixing tobacco dust with a film-forming material to form a mixture; (b) treating the mixture to form agglomerated particles; (c) admixing the agglomerated particles with a tobacco-parts slurry; and (d) forming the slurry into a sheet by means of a paper-making process, drying and then shredding the resultant reconstituted tobacco sheet.
Claim 8
Independent Claim
66 words
A method for employing tobacco dust in the preparation of reconstituted tobacco which comprises: (a) admixing tobacco dust with a film-forming material to form a mixture; (b) treating the mixture to form agglomerated particles; (c) admixing the agglomerated particles with a tobacco-parts slurry; and (d) forming the slurry into a sheet by means of a paper-making process, drying and then shredding the resultant reconstituted tobacco sheet.
Claim 9
Dependent Claim
25 words
The method of claim 6, wherein greater than about 1 part by weightof film-forming material is admixed with 100 parts by weight of tobacco dust.
Claim 10
Dependent Claim
26 words
The method of claim 7, wherein greater than about 5 parts by weight of film-forming material is admixed with 100 parts by weight of tobacco dust.
Claim 11
Dependent Claim
12 words
The method of claim 6, wherein the film-forming material has thermoplastic properties.
Claim 12
Dependent Claim
16 words
The method of claim 6, wherein the film-forming material is present in an organic solvent medium.
Claim 13
Dependent Claim
13 words
The method of claim 10, wherein the organic solvent medium is water soluble.
Claim 14
Dependent Claim
24 words
The method of claim 11, wherein the mixture of tobacco dust and film-forming material is agglomerated by spinning the mixture into a water bath.
Claim 15
Dependent Claim
19 words
The method of claim 10, wherein the mixture of tobacco dust and film-forming material is agglomerated by dry spinning.
Claim 16
Dependent Claim
30 words
The method of claim 6, wherein the mixture of tobacco dust and film-forming material is agglomerated by spinning the mixture into a medium in which the film-forming material is insoluble.
Claim 17
Dependent Claim
41 words
The method of claim 6, wherein the mixture of tobacco dust and film-forming material is agglomerated by casting the mixture into a sheet, drying the sheet and then either before or after shredding the sheet, treating it with an insolubilizing agent.
Claim 18
Dependent Claim
12 words
The method of claim 6, wherein the film-forming material is a polysaccharide.
Claim 19
Dependent Claim
27 words
The method of claim 16, wherein the polysaccharide is selected from the group consisting of natural gums, algins, pectins, chitosan, xanthomonas gum, salts thereof and combinations thereof.
Claim 20
Dependent Claim
13 words
The method of claim 2, wherein the film-forming material is a polysaccharide derivative.
Claim 21
Dependent Claim
39 words
The method of claim 18, wherein the polysaccharide derivative is selected from the group consisting of cellulose ethers and esters, carboxymethyl cellulose (CMC), carboxymethyl guar, methyl cellulose, ethyl cellulose, ethyl hydroxyethyl cellulose, hydroxypropyl cellulose, cellulose acetate and combinations thereof.
Claim 22
Dependent Claim
14 words
The method of claim 6, wherein the film-forming material is a synthetic thermoplastic material.
Claim 23
Dependent Claim
36 words
The method of claim 20, wherein the synthetic thermoplastic material is selected from the group consisting of polyvinyl alcohol, polyvinyl acetate, polyacrylic acid, copolymers of methyl vinyl ether and maleic anhydride, salts thereof and combinations thereof.
Claim 24
Dependent Claim
21 words
The method of claim 6, wherein the film-forming material and tobacco dust mixture is agglomerated by subjecting it to cross-linking agents.
Claim 25
Dependent Claim
42 words
The method of claim 22, wherein the cross-linking agents are selected from the group consisting of polyfunctional acids, acid chlorides of the polyfunctional carboxylic acids, acid anhydrides of polyfunctional carboxylic acids, carbonyl chloride, aldehydes and dialdehydes, ketenes, lactones, epoxides and combinations thereof.
Claim 26
Dependent Claim
21 words
A reconstituted tobacco produced by the method of claim 2, wherein said film-forming material is a polysaccharide or a polysaccharide derivative.
Claim 27
Dependent Claim
19 words
A reconstituted tobacco produced by the method of claim 6, wherein said film-forming material is a synthetic thermoplastic material.
Claim 28
Independent Claim
66 words
A method for employing tobacco dust in the preparation of reconstituted tobacco which comprises: (a) admixing tobacco dust with a cross-linking agent to form a mixture; (b) treating the mixture to form agglomerated particles; (c) admixing the agglomerated particles with a tobacco-parts slurry; and (d) forming the slurry into a sheet by means of a paper-making process, drying and then shredding the resultant reconstituted tobacco sheet.
Claim 29
Independent Claim
66 words
A method for employing tobacco dust in the preparation of reconstituted tobacco which comprises: (a) admixing tobacco dust with a cross-linking agent to form a mixture; (b) treating the mixture to form agglomerated particles; (c) admixing the agglomerated particles with a tobacco-parts slurry; and (d) forming the slurry into a sheet by means of a paper-making process, drying and then shredding the resultant reconstituted tobacco sheet.
Claim 30
Dependent Claim
30 words
The method of claim 26, wherein about 2 to 10% bydry weight of cross-linking agent is admixed with the tobacco dust, based on the dry weight of the tobacco dust.
Claim 31
Dependent Claim
42 words
The method of claim 26, wherein the cross-linking agent is selected from the group consisting of polyfunctional acids, acid chlorides of the polyfunctional carboxylic acids, acid anhydrides of polyfunctional carboxylic acids, carbonyl chloride, aldehydes and dialdehydes, ketenes, lactones, epoxides and combinations thereof.
Claim 32
Dependent Claim
47 words
A reconstituted tobacco produced by the method of claim 26, wherein said cross-linking agent is selected from the group consisting of polyfunctional acids, acid chlorides of the polyfunctional carboxylic acids, acid anhydrides of polyfunctional carboxylic acids, carbonyl chloride, aldehydes and dialdehydes, ketenes, lactones, epoxides and combinations thereof.
Claim 33
Independent Claim
67 words
A method for employing tobacco dust in the preparation of reconstituted tobacco which comprises: (a) admixing tobacco dust with a calcium sequestering agent to form a mixture; (b) treating the mixture to form agglomerated particles; (c) admixing the agglomerated particles with a tobacco-parts slurry; and (d) forming the slurry into a sheet by means of a paper-making process, drying and then shredding the resultant reconstituted tobacco sheet.
Claim 34
Independent Claim
67 words
A method for employing tobacco dust in the preparation of reconstituted tobacco which comprises: (a) admixing tobacco dust with a calcium sequestering agent to form a mixture; (b) treating the mixture to form agglomerated particles; (c) admixing the agglomerated particles with a tobacco-parts slurry; and (d) forming the slurry into a sheet by means of a paper-making process, drying and then shredding the resultant reconstituted tobacco sheet.
Claim 35
Dependent Claim
36 words
The method of claim 30, wherein the calcium sequestering agent is admixed with the tobacco dust in an amount up to 30% in excess of the chemical equivalents of polyvalent ions present in the tobacco dust.
Claim 36
Dependent Claim
30 words
The method of claim 30, wherein the calcium sequesteringagent is selected from the group consisting of diammonium phosphate, lower polyfunctional carboxylic acids, carbonate, bicarbonate and phosphate salts, and combinations thereof.
Claim 37
Dependent Claim
36 words
A reconstituted tobacco produced by the method of claim 30, wherein said calcium sequestering agent is selected from the group consisting of diammonium phosphate, lower polyfunctional carboxylic acids, carbonate, bicarbonate and phosphate salts, and combinations thereof.
Claim 38
Independent Claim
74 words
A method of producing a smoking material comprising: (a) admixing tobacco dust with an aqueous solution of a polysaccharide; (b) extruding the mixture into a medium which insolubilizes the polysaccharide forming insolubilized, water-resistant fibers of polysaccharide having tobacco dust substantially uniformly blended therethrough; (c) adding the fibers to a tobacco-parts slurry; and (d) forming the slurry into a sheet by means of a papermaking process, drying and then shredding the resultant reconstituted tobacco sheet.
Claim 39
Independent Claim
74 words
A method of producing a smoking material comprising: (a) admixing tobacco dust with an aqueous solution of a polysaccharide; (b) extruding the mixture into a medium which insolubilizes the polysaccharide forming insolubilized, water-resistant fibers of polysaccharide having tobacco dust substantially uniformly blended therethrough; (c) adding the fibers to a tobacco-parts slurry; and (d) forming the slurry into a sheet by means of a papermaking process, drying and then shredding the resultant reconstituted tobacco sheet.
Claim 40
Independent Claim
78 words
A method of producing a smoking material comprising: (a) admixing tobacco dust with a non-aqueous solution of cellulose ether or ester; (b) extruding the mixture into a water bath thereby insolubilizing the cellulose ether or ester forming insolubilized, water-resistant fibers having tobacco dust substantially uniformly blended therethrough; (c) adding the fibers to a tobacco-parts slurry; and (d) forming the slurry into a sheet by means of a paper-making process, drying and then shredding the resultant reconstituted tobacco sheet.
Claim 41
Independent Claim
78 words
A method of producing a smoking material comprising: (a) admixing tobacco dust with a non-aqueous solution of cellulose ether or ester; (b) extruding the mixture into a water bath thereby insolubilizing the cellulose ether or ester forming insolubilized, water-resistant fibers having tobacco dust substantially uniformly blended therethrough; (c) adding the fibers to a tobacco-parts slurry; and (d) forming the slurry into a sheet by means of a paper-making process, drying and then shredding the resultant reconstituted tobacco sheet.
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) | 1985-07-26 | 1986-01-25 | 1986-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-26 | 1990-01-25 | 1990-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-26 | 1994-01-25 | 1994-07-27 | $7700.00 | Window Closed / Lapsed |