Claims
- 1. A method for controlling the delivery of by-products found in cigarette smoke, comprising passing cigarette smoke through a filter element of compacted substrate containing an effective amount of at least one active modifier component selected from the group consisting of zinc thiocyanate, sarcosine hydrochloride, zinc chloride, ferrous bromide, lithium bromide, manganese sulfate, manganese acetate, magnesium chloride, magnesium sulfate and magnesium acetate.
- 2. A method of claim 1, wherein the filter element is obtained from polyolefin-containing substrate in the form of at least one of a (a) opened fiber tow, (b) ribbon of nonwoven material, (c) sliver and (d) fibrillated film.
- 3. A method for controlling the delivery of tar, nicotine, formaldehyde and total particulate matter found in cigarette smoke, comprising passing the cigarette smoke through a polyolefin-containing filter element containing an effective amount of active modifier components comprising
- (A) at least one member selected from the group consisting of zinc thiocyanate, sarcosine hydrochloride, ferrous bromide, calcium bromide, lithium bromide, manganese sulfate, manganese acetate, magnesium chloride, magnesium sulfate and magnesium acetate; and
- (B) glyceryl triacetate.
- 4. A method of claim 2, wherein the active modifier component comprises zinc thiocyanate.
- 5. A method of claim 2, wherein the active modifier component comprises sarcosine hydrochloride.
- 6. A method of claim 2, wherein the active modifier component comprises zinc chloride.
- 7. A method of claim 2, wherein the active modifier component comprises ferrous bromide.
- 8. A method of claim 3, wherein the active modifier component comprises calcium bromide.
- 9. A method of claim 2, wherein the active modifier component comprises lithium bromide.
- 10. A method of claim 2, wherein the active modifier component comprises manganese sulfate.
- 11. A method of claim 2 wherein the active modifier component comprises manganese acetate.
- 12. A method of claim 2, wherein the active modifier component comprises magnesium chloride.
- 13. A method of claim 2, wherein the active modifier component comprises magnesium sulfate.
- 14. A method of claim 2, wherein the active modifier component comprises magnesium acetate.
- 15. A method of claim 2, wherein active modifier components are applied to separate substrate surfaces and the substrate introduced as garniture feed into a filter rod-making apparatus.
- 16. The method of claim 2, wherein the filter element contains a polyoxyalkylene derivative of a sorbitan fatty acid ester.
- 17. The method of claim 2, wherein the filter element contains a fatty acid monoester of a polyhydroxy alcohol.
- 18. The method of claim 2, wherein the filter element contains a fatty acid diester of a polyhydroxy alcohol.
- 19. The method of claim 2, wherein the polyolefin-containing substrate is pretreated by corona or plasma discharge before application of active modifier component thereto.
- 20. A tobacco smoke filter element comprising a filter plug of compacted substrate from at least one of (a) opened fiber tow (b) ribbon of nonwoven material, (c) sliver, or (d) fibrillated film, and comprising an effective amount of at least one active modifier of at least one of zinc thiocyanate, sarcosine hydrochloride, zinc chloride, ferrous bromide, lithium bromide, manganese sulfate, manganese acetate, magnesium chloride, magnesium sulfate, and magnesium acetate.
- 21. The filter element of claim 20, wherein the active modifier component comprises zinc thiocyanate.
- 22. The filter element of claim 20, wherein the active modifier component comprises sarcosine hydrochloride.
- 23. The filter element of claim 20, wherein the active modifier component comprises zinc chloride.
- 24. The filter element of claim 20, wherein the active modifier component comprises ferrous bromide.
- 25. The filter element of claim 20, wherein the active modifier component comprises lithium bromide.
- 26. The filter element of claim 20, wherein the active modifier component comprises manganese sulfate.
- 27. The filter element of claim 20, wherein the active modifier component comprises manganese acetate.
- 28. The filter element of claim 20, wherein the active modifier component comprises magnesium chloride.
- 29. The filter element of claim 20, wherein the active modifier component comprises magnesium sulfate.
- 30. The filter element of claim 20, wherein the active modifier component comprises magnesium acetate.
- 31. A cigarette comprising a tobacco rod in serial combination with a filter element as defined in claim 20.
- 32. A filter element from a filter plug comprising polyolefin substrate and an active modifier component of (A) about 0.05%-10% by weight of a member selected from the group consisting of zinc thiocyanate, sarcosine hydrochloride, zinc chloride, ferrous bromide, lithium bromide, manganese sulfate manganese acetate, magnesium chloride, and magnesium acetate; and (B) up to about 5% by weight of glyceryl triacetate.
- 33. A cigarette comprising a tobacco rod in serial combination with a filter element as defined in claim 32.
Parent Case Info
The present invention is a continuation-in-part of copending U.S. Ser. No. 152,213 filed Feb. 4, 1988 entitled METHOD AND DEVICE FOR CONTROL OF BY-PRODUCTS FROM CIGARETTE SMOKE, which relates to an improved method for selectively controlling delivered concentrations of particulate matter and certain other undesired by-products in cigarette smoke by using a cigarette filter element treated with at least one active modifier component.
US Referenced Citations (8)
Foreign Referenced Citations (2)
Number |
Date |
Country |
3200068 |
Jan 1982 |
DEX |
1103823 |
Feb 1968 |
GBX |
Continuation in Parts (1)
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Number |
Date |
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Parent |
152213 |
Feb 1988 |
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