Mixed fiber product for use in the manufacture of cigarette filter elements and related methods, systems, and apparatuses

Patent metadata

Field	Value
Publication number	US-10064429-B2
Application number	US-201113241399-A
Country	US
Kind code	B2
Filing date	Sep 23, 2011
Priority date	Sep 23, 2011
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

A system configured to produce smokable products including filter elements formed from multiple fibers is provided. The system includes a texturing apparatus configured to combine the fibers such that the fibers are at least partially entangled with each other and form a mixed fiber product. The entangled fibers may be sufficiently separated from one another such that plasticizer may be applied to the mixed fiber product without necessarily performing tow opening, crimp removal, or blooming operations. The fibers combined to form the mixed fiber product may define characteristics that differ or which are the same. Accordingly, filter elements may be produced that include different fibers that have respective desirable properties associated therewith. Related methods, apparatuses and mixed fiber products are also provided by the disclosure.

First claim

What is claimed is:

1. A method for forming a cigarette filter element, the method comprising:
providing a first fiber defining a first characteristic;
providing a second fiber defining a second characteristic,
wherein the first fiber and the second fiber respectively comprise a plurality of filaments, and
wherein the first characteristic of the first fiber differs from the second characteristic of the second fiber;

combining the first fiber and the second fiber in a texturing apparatus such that the first fiber is at least partially entangled with the second fiber to form a mixed fiber product without conducting a separate separation operation in which the filaments of the first fiber or the filaments of the second fiber are at least partially separated from one another prior to the first fiber and the second fiber being combined in the texturing apparatus;
applying the plasticizer to the mixed fiber product; and
at least partially enclosing the mixed fiber product in a plug wrap.

2. The method of claim 1 , wherein combining the first fiber and the second fiber in the texturing apparatus comprises directing at least one flow of fluid at the first fiber and the second fiber.

3. The method of claim 2 , wherein directing the flow of fluid at the first fiber and the second fiber comprises directing a flow of air at the first fiber and the second fiber.

4. The method of claim 1 , wherein the first fiber defines a cross-sectional area that differs from the second fiber.

5. The method of claim 1 , wherein the first fiber defines a finish that differs from the second fiber.

6. The method of claim 1 , wherein the first fiber defines a material composition that differs from the second fiber.

7. The method of claim 1 , wherein the first fiber comprises at least one of cellulose ester and polyolefin.

8. The method of claim 7 , wherein the second fiber is selected from the group consisting of:
cotton;
regenerated cellulose;
polylactic acid;
polyhydroxyalkanoate;
activated carbon fibers;
catalytic fibers;
cellulose ester;
polyolefin; and
ion-exchange fibers.

9. The method of claim 1 , wherein the first fiber defines a material composition that is the same as the second fiber.

10. The method of claim 1 , wherein the first fiber defines a denier that differs from the second fiber.

11. The method of claim 1 , wherein prior to combining the first fiber and the second fiber in the texturing apparatus, the first fiber defines a tow and the second fiber defines a second tow.

12. The method of claim 1 , wherein prior to combining the first fiber and the second fiber in the texturing apparatus the first fiber defines a tow and the second fiber defines a yarn.

13. The method of claim 1 , further comprising:
providing a first intermediate fiber;
providing a second intermediate fiber; and
combining the first intermediate fiber and the second intermediate fiber in an intermediate texturing apparatus such that the first intermediate fiber is at least partially entangled with the second intermediate fiber to form the first fiber.

14. The method of claim 1 , wherein combining the first fiber and the second fiber in the texturing apparatus comprises false twisting the first fiber and the second fiber.

15. The method of claim 1 , wherein a first portion of the mixed fiber product defines a first melting point that is less than a second melting point of a second portion of the mixed fiber product.

16. The method of claim 15 , further comprising heating the mixed fiber product to a temperature that is greater than or equal to the first melting point and less than the second melting point.

17. The method of claim 16 , wherein the first fiber defines the first portion and the second fiber defines the second portion.

18. The method of claim 16 , wherein the first fiber defines the first portion and at least part of the second portion.

19. The method of claim 1 , wherein the mixed fiber product is not subjected to tow opening, crimp removal, or blooming prior to applying the plasticizer.

20. The method of claim 1 , wherein applying the plasticizer to the mixed fiber product comprises applying a fluid plasticizer to the mixed fiber product.

21. A method for forming a cigarette filter element, the method comprising:
providing a first fiber defining a first characteristic;
providing a second fiber defining a second characteristic,
wherein the first characteristic of the first fiber differs from the second characteristic of the second fiber;

combining the first fiber and the second fiber in a texturing apparatus such that the first fiber is at least partially entangled with the second fiber to form a mixed fiber product, wherein combining the first fiber and the second fiber in the texturing apparatus comprises false twisting the first fiber and the second fiber; and
at least partially enclosing the mixed fiber product in a plug wrap.

Assignees

• Sebastian Andries D
• Gan Huamin
• Deloach Kenneth C
• Sizemore Richard L
• Vick Dean M
• Reynolds Tobacco Co R

Inventors

• Sebastian Andries D
• Gan Huamin
• Deloach Kenneth C
• Sizemore Richard L
• Vick Dean M

Classifications

• A24D3/063

  of the fibers · CPC title

• A24D3/10

  of cellulose or cellulose derivatives · CPC title

• A24D3/0204

  Preliminary operations before the filter rod forming process, e.g. crimping, blooming (A24D3/0275 takes precedence) · CPC title

• D02J1/08

  Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams · CPC title

• A24D3/08 Primary

  of organic materials as carrier or major constituent (of ion exchange materials A24D3/12) · CPC title