Process for manufacturing recycled pulp from used sanitary goods
US-2016237617-A1 · Aug 18, 2016 · US
Recycled pulp, absorbent, non-woven fabric, and sanitary article
US11554520B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11554520-B2 |
| Application number | US-202016999844-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 21, 2020 |
| Priority date | Oct 15, 2014 |
| Publication date | Jan 17, 2023 |
| Grant date | Jan 17, 2023 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
Recycled pulp that derives from a used sanitary article includes an antibacterial activity value of 2.0 or more and an acid. Recycled pulp that derives from a used sanitary article includes an antibacterial activity value of 2.0 or more and an ash content of 0.65% by weight or less, and further includes an acid. The acid is a citric acid. The recycled pulp further includes a cationic antibacterial agent. The cationic antibacterial agent is a quaternary ammonium salt. The cationic antibacterial agent is a benzalkonium chloride or a cetylpyridinium chloride. At least a portion of the cationic antibacterial agent is adsorbed on the recycled pulp.
First claim
Opening claim text (preview).
What is claimed is: 1. Recycled pulp that derives from a used sanitary article, the recycled pulp comprising: an antibacterial activity value of 2.0 or more; and an ash content of 0.65% by weight or less, wherein the used sanitary article comprises pulp fiber and superabsorbent polymer, and the ash content comprises a remainder of decomposed superabsorbent polymer. 2. The recycled pulp according to claim 1 , further comprising an acid. 3. The recycled pulp according to claim 2 , wherein the acid is a citric acid. 4. The recycled pulp according to claim 1 , further comprising a cationic antibacterial agent. 5. The recycled pulp according to claim 4 , wherein the cationic antibacterial agent is a quaternary ammonium salt. 6. The recycled pulp according to claim 4 , wherein the cationic antibacterial agent is a benzalkonium chloride or a cetylpyridinium chloride. 7. The recycled pulp according to claim 4 , wherein at least a portion of the cationic antibacterial agent is adsorbed on the recycled pulp. 8. The recycled pulp according to claim 1 , wherein the recycled pulp is in a damp state. 9. An absorbent comprising the recycled pulp according to claim 1 . 10. Tissue comprising the recycled pulp according to claim 1 . 11. Non-woven fabric comprising the recycled pulp according to claim 1 . 12. A sanitary article comprising an absorbent that comprises the recycled pulp according to claim 1 . 13. A sanitary article comprising at least one of tissue or non-woven fabric as a configurational material, wherein the at least one of the tissue or the non-woven fabric comprises the recycled pulp according to claim 1 . 14. The recycled pulp according to claim 1 , wherein the antibacterial activity value is 5.5 or more.
Assignees
Inventors
Classifications
Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators · CPC title
Working-up waste paper (mechanical part D21B1/08, D21B1/32) · CPC title
- B29B17/02Primary
Separating plastics from other materials · CPC title
using chemical substances · CPC title
with ozone · CPC title
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- What does patent US11554520B2 cover?
- Recycled pulp that derives from a used sanitary article includes an antibacterial activity value of 2.0 or more and an acid. Recycled pulp that derives from a used sanitary article includes an antibacterial activity value of 2.0 or more and an ash content of 0.65% by weight or less, and further includes an acid. The acid is a citric acid. The recycled pulp further includes a cationic antibacter…
- Who is the assignee on this patent?
- Unicharm Corp
- What technology area does this patent fall under?
- Primary CPC classification B29B17/02. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jan 17 2023 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).