IP Library Granted Patent US 8,967,155
Granted Patent B2
US 8,967,155 · App. 13/288,261 · Granted Mar 3, 2015

Products of high denier per filament and low total denier tow bands

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Quick Facts
Patent No.
US 8,967,155
App. No.
13/288,261
Granted
Mar 3, 2015
Kind
B2
Abstract

A method for forming a filter rod may include providing a bale of crimped tow band having about 10 denier per filament or greater and about 20,000 total denier or less, the crimped tow band comprising a plurality of cellulose acetate filaments; and placing the crimped tow band in an apparatus so as to form a filter rod.

Claims (28)

1. A filter comprising:

a tow having about 10 denier per filament or greater and about 15,000 total denier or less, the tow comprising a plurality of cellulose acetate filaments, the filter having an encapsulated pressure drop of about 3.5 mm water/mm length of filter or less, and the filter having a circumference of about 17 mm or less.

2. The filter of claim 1 , wherein the encapsulated pressure drop of the filter has coefficient of variability less than about 7% .

3. The filter of claim 1 , wherein the filter is capable of allowing about 5 mg or greater of tar in a smoke stream to pass therethrough over a length of the filter rod of about 1 cm or greater.

4. The filter of claim 1 , wherein the filter has an encapsulated pressure drop of about 2 mm water/mm length of filter or less.

5. The filter of claim 1 further comprising:

a section that comprises at least one selected from the group consisting of: a cavity, a porous mass, a polypropylene, a polyethylene, a polyolefin tow, a polypropylene tow, a polyethylene terephthalate, a polybutylene terephthalate, a random oriented acetate, a paper, a corrugated paper, a concentric filter, a carbon-on-tow, silica, magnesium silicate, a zeolite, a molecular sieve, a salt, a catalyst, sodium chloride, nylon, a flavorant, tobacco, a capsule, cellulose, a cellulosic derivative, cellulose acetate, a catalytic converter, iodine pentoxide, a coarse powder, a carbon particle, a carbon fiber, a fiber, a glass bead, a nanoparticle, a void chamber, a baffled void chamber, a cellulose acetate tow with less than about 10 denier per filament, and any combination thereof.

6. The filter of claim 1 further comprising:

an active particle that comprises at least one selected from the group consisting of: a nano-scaled carbon particle, a carbon nanotube having at least one wall, a carbon nanohorn, a bamboo-like carbon nanostructure, a fullerene, a fullerene aggregate, graphene, a few layer graphene, oxidized graphene, an iron oxide nanoparticle, a nanoparticle, a metal nanoparticle, a gold nanoparticle, a silver nanoparticle, a metal oxide nanoparticle, an alumina nanoparticle, a magnetic nanoparticle, a paramagnetic nanoparticle, a superparamagnetic nanoparticle, a gadolinium oxide nanoparticle, a hematite nanoparticle, a magnetite nanoparticle, a gado-nanotube, an endofullerene, Gd@C60, a core-shell nanoparticle, an onionated nanoparticle, a nanoshell, an onionated iron oxide nanoparticle, and any combination thereof.

7. A smoking device comprising:

a smokeable substance; and

a filter comprising a tow having about 10 denier per filament or greater and about 15,000 total denier or less, the tow comprising a plurality of cellulose acetate filaments, and the filter having an encapsulated pressure drop of about 3.5 mm water/mm length of filter or less, the filter having a circumference of about 17 mm or less.

8. The smoking device of claim 7 , wherein the smokeable substance comprises at least one selected from the group consisting of:

a tobacco, a tea, an herb, a carbonized component, pyrolyzed component, an inorganic filler component, and any combination thereof.

9. The smoking device of claim 7 , wherein the smokeable substance is in the form of a tobacco column.

10. The smoking device of claim 7 , wherein the filter comprises a plurality of sections.

11. The smoking device of claim 10 , wherein at least one of the sections comprises at least one selected from the group consisting of: a cavity, a porous mass, a polypropylene, a polyethylene, a polyolefin tow, a polypropylene tow, a polyethylene terephthalate, a polybutylene terephthalate, a random oriented acetate, a paper, a corrugated paper, a concentric filter, a carbon-on-tow, silica, magnesium silicate, a zeolite, a molecular sieve, a salt, a catalyst, sodium chloride, nylon, a flavorant, tobacco, a capsule, cellulose, a cellulosic derivative, cellulose acetate, a catalytic converter, iodine pentoxide, a coarse powder, a carbon particle, a carbon fiber, a fiber, a glass bead, a nanoparticle, a void chamber, a baffled void chamber, a cellulose acetate tow with less than about 10 denier per filament, and any combination thereof.

12. The smoking device of claim 7 , wherein the filter is capable of allowing about 5 mg or greater of tar in a smoke stream to pass therethrough over a length of the filter of about 1 cm or greater.

13. A pack of filters comprising:

a pack comprising at least a plurality of filters having a circumference of about 17 mm or less, the filters comprising a tow having about 10 denier per filament or greater and about 15,000 total denier or less, the tow comprising a plurality of cellulose acetate filaments, and the filter having an encapsulated pressure drop of about 3.5 mm water/mm length of filter or less.

14. A pack of smoking devices comprising:

a pack comprising at least one smoking device that comprises a filter that comprises a tow having about 10 denier per filament or greater and about 15,000 total denier or less, the tow comprising a plurality of cellulose acetate filaments, and the filter having a circumference of about 17 mm or less and an encapsulated pressure drop of about 3.5 mm water/mm length of filter or less.

15. A carton of smoking device packs comprising:

a carton comprising at least one pack, the pack comprising at least one smoking device that comprises a filter that comprises a tow having about 10 denier per filament or greater and about 15,000 total denier or less, the tow comprising a plurality of cellulose acetate filaments, and the filter having a circumference of about 17 mm or less and an encapsulated pressure drop of about 3.5 mm water/mm length of filter or less.

16. The filter of claim 1 , wherein the circumference of the filter is about 5 mm to about 15 mm.

17. The filter of claim 1 , wherein the circumference of the filter is about 5 mm to about 13 mm.

18. The filter of claim 1 , wherein the tow has about 12 denier per filament or greater.

19. The filter of claim 1 , wherein the tow has about 10,000 to about 13,000 total denier.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 14, 2017
From: CELANESE ACETATE LLC
To: ACETATE INTERNATIONAL LLC
Reel/Frame 044391/0796 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 3, 2011
From: BUNDREN, CHRISTOPHER M.; SANDERSON, WILLIAM S.; BUSBY, PAUL; CLARK, EDWARD J.
To: CELANESE ACETATE LLC
Reel/Frame 027168/0720 →