Tobacco – Smoke separator or treater – Having a polymer
Patent
1997-05-01
1999-06-15
Silverman, Stanley S.
Tobacco
Smoke separator or treater
Having a polymer
131331, 131341, 131342, 428357, 428364, 4281311, 4281315, 493 39, 493 42, 493 49, D02G 300, A24D 308
Patent
active
059112247
ABSTRACT:
A porous element particularly for use as a tobacco smoke filter plug in association with a cigarette or the like wherein the matrix comprises a multiplicity of biodegradable polyvinyl alcohol fibers bonded together at their points of contact to define a tortuous interstitial path for the passage of smoke. Because of the hygroscopic nature of polyvinyl alcohol, commercial production of such products require careful control of the moisture content of the polyvinyl alcohol fiber starting material, usually pre-drying the same to a residual moisture content of 7% by weight or less, and treatment of the low moisture fibrous mass by superheated steam to add about 2.5 to 5% moisture to a final moisture content of about 2.5 to 10%. The steam renders the fiber surface adhesive and, thus, bondable, and also lubricates the gathered fibers to improve processability.
REFERENCES:
patent: 3095343 (1963-06-01), Berger
patent: 3417758 (1968-12-01), Sloan et al.
patent: 3455766 (1969-07-01), Berger et al.
patent: 3595245 (1971-07-01), Buntin et al.
patent: 3615480 (1971-10-01), Lam
patent: 3615995 (1971-10-01), Buntin et al.
patent: 3616603 (1971-11-01), Warner
patent: 3637447 (1972-01-01), Berger et al.
patent: 3825379 (1974-07-01), Lohkamp et al.
patent: 4286005 (1981-08-01), Berger
patent: 4355995 (1982-10-01), Berger
patent: 4380570 (1983-04-01), Schwarz
patent: 4729808 (1988-03-01), Berger
patent: 4731215 (1988-03-01), Schwarz
patent: 5021288 (1991-06-01), Jezic
patent: 5207387 (1993-05-01), Honeycutt
patent: 5290626 (1994-03-01), Nishio et al.
patent: 5342335 (1994-08-01), Rhim
patent: 5362778 (1994-11-01), Famili et al.
patent: 5427852 (1995-06-01), Teufel et al.
patent: 5445785 (1995-08-01), Rhim
patent: 5453144 (1995-09-01), Kauffman et al.
patent: 5455114 (1995-10-01), Ohmory et al.
patent: 5462801 (1995-10-01), Willmund
patent: 5478386 (1995-12-01), Itoh et al.
patent: 5495860 (1996-03-01), Teufel et al.
patent: 5497793 (1996-03-01), Kubica
patent: 5509430 (1996-04-01), Berger
Richmond Times Dispatch article, July 25, 1994, entitled Father, son pack their hopes around product.".
Dever et al., "Development and Evaluation of Water Soluble Melt Blown Nonwovens", INDA JNR, vol. 5, No. 2, pp. 27-33.
Sell sheet entitled "Envirofill, Loose-fill Packaging Material" for EnPac.
Filtrona International Limited
Leavitt Steven B.
Silverman Stanley S.
LandOfFree
Biodegradable polyvinyl alcohol tobacco smoke filters, tobacco s does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Biodegradable polyvinyl alcohol tobacco smoke filters, tobacco s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Biodegradable polyvinyl alcohol tobacco smoke filters, tobacco s will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-396679