# US 2014/0190505 A1 · Filter material comprising polylactide fibres

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- Number: US 2014/0190505 A1
- Document ID: US20140190505A1
- Status: Published application
- Kind: A1
- Application number: 14/128,914
- Filed: 2012-06-22
- Published: 2014-07-10
- Earliest claimed: 2011-06-23
- Assignees: British American Tobacco (Investments) Limited
- Inventors: Yahia Lemmouchi
- Web page: https://patentgrep.com/patent/US20140190505A1

## CPC

- A24D 3/08: of organic materials as carrier or major constituent (of ion exchange materials A24D3/12)
- A24D 3/068: {Biodegradable or disintegrable}
- A24D: CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES

## Abstract

The invention relates to filter material for inclusion in the filter or filter element of a 5 smoking article, said filter material comprising polylactide fibres and a plasticizer. The invention also relates to filters or filter elements comprising the filter material, and smoking articles comprising the same.

## Claims

### Claim 1

A filter material for inclusion in a filter or filter element of a smoking article, said filter material comprising polylactide fibres and a plasticizer.

### Claim 2 (depends on 1)

A filter material as claimed in claim 1, wherein the fibres of the filter material consist essentially of polylactide fibres.

### Claim 3

A filter material as claimed in either of the preceding claims, wherein the polylactide fibres consist essentially of polylactide.

### Claim 4

A filter material as claimed in either of the preceding claims, wherein the plasticizer is selected from the group consisting of polyethylene glycol, triacetin and TEC.

### Claim 5

A filter material as claimed in any one of the preceding claims, wherein the plasticizer is included in an amount of 4 to 15% by weight of the filter material.

### Claim 6

A filter or filter element comprising a filter material as claimed in any one of the preceding claims.

### Claim 7 (depends on 6)

A smoking article comprising a filter or filter element as claimed in claim 6.