Aerosol former for biodegradable heat-not-burn and e-cigarettes with related system and method
US-2024122234-A1 · Apr 18, 2024 · US
Cigarette filter
US9289013B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9289013-B2 |
| Application number | US-201214407487-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 26, 2012 |
| Priority date | Jun 14, 2012 |
| Publication date | Mar 22, 2016 |
| Grant date | Mar 22, 2016 |
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Abstract
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To provide a cigarette filter that can achieve both strength in a dry state and disintegration in a wet state, this cigarette filter has a filter plug containing a cellulose ester staple fiber, a pulp, and an alkali metal salt of a water-soluble anionic polymer. The filter plug has an alkali metal content of 2 to 100 μmol per gram of the filter plug. The water-soluble anionic polymer may include at least one member selected from the group consisting of a polyacrylic acid and a polysaccharide having a carboxyl group.
First claim
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The invention claimed is: 1. A cigarette filter comprising a filter plug containing a cellulose ester staple fiber, a pulp, and an alkali metal salt of a water-soluble anionic polymer, wherein the filter plug has an alkali metal content of 2 to 100 μmol per gram of the filter plug. 2. A cigarette filter according to claim 1 , wherein the water-soluble anionic polymer comprises at least one member selected from the group consisting of a polyacrylic acid and a polysaccharide having a carboxyl group. 3. A cigarette filter according to claim 1 , wherein the water-soluble anionic polymer comprises a carboxymethyl cellulose or an alginic acid. 4. A cigarette filter according to claim 1 , wherein the alkali metal content is 2 to 90 μmol per gram of the filter plug. 5. A paper sheet comprising a cellulose ester staple fiber, a pulp, and an alkali metal salt of a water-soluble anionic polymer, wherein the paper sheet has an alkali metal content of 2 to 100 μmol per gram of the paper sheet. 6. A cigarette filter according to claim 1 , wherein the cellulose ester staple fiber has an average fiber length of 1 to 6 mm. 7. A cigarette filter according to claim 1 , wherein the filter plug has an alkali metal content of 3 to 75 μmol per gram of the filter plug.
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- What does patent US9289013B2 cover?
- To provide a cigarette filter that can achieve both strength in a dry state and disintegration in a wet state, this cigarette filter has a filter plug containing a cellulose ester staple fiber, a pulp, and an alkali metal salt of a water-soluble anionic polymer. The filter plug has an alkali metal content of 2 to 100 μmol per gram of the filter plug. The water-soluble anionic polymer may includ…
- Who is the assignee on this patent?
- Taniguchi Hiroki, Karakane Hiroki, Daicel Corp
- What technology area does this patent fall under?
- Primary CPC classification A24D3/068. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Mar 22 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).