Method for making paper product and paper product
US-2015218756-A1 · Aug 6, 2015 · US
Method for preparing furnish and paper product
US9828727B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9828727-B2 |
| Application number | US-201414916272-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 22, 2014 |
| Priority date | Sep 27, 2013 |
| Publication date | Nov 28, 2017 |
| Grant date | Nov 28, 2017 |
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- Title
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Abstract
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The invention relates to a method for preparing aqueous furnish to be used in paper product manufacturing. In the method aqueous furnish is prepared by making a fiber suspension, and cationic natural polymer (S), alum (A) and anionic nanofibrillar cellulose (F) are added to the aqueous furnish in a short circulation of a paper or board machine.
First claim
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The invention claimed is: 1. A method for preparing aqueous furnish to be used in paper product manufacturing, in which method aqueous furnish is prepared by making a fibre suspension, and cationic natural polymer, alum and anionic nanofibrillar cellulose are added to the aqueous furnish in a short circulation of a paper or board machine; wherein alum is added before anionic nanofibrillar cellulose is added. 2. The method according to claim 1 , wherein the cationic natural polymer and alum are added, in either order or simultaneously, before anionic nanofibrillar cellulose is added. 3. The method according to claim 2 , wherein alum is added before the fibre suspension is transferred to a feed pump in a paper machine, and the anionic nanofibrillated cellulose is added to the fibre suspension after the fibre suspension has passed through a pressure screen. 4. The method according to claim 3 , wherein the cationic natural polymer is added, before, after or simultaneously with the alum, before the fibre suspension is transferred to a feed pump in a paper machine. 5. The method according to claim 1 , wherein the cationic natural polymer is added before anionic nanofibrillar cellulose is added, followed by adding alum. 6. The method according to claim 5 , wherein the cationic natural polymer is added before the aqueous furnish is transferred to a feed pump in a paper machine, and alum and anionic nanofibrillar cellulose are added to the aqueous furnish after the aqueous furnish has passed through a pressure screen in a paper machine. 7. The method according to claim 1 , wherein the cationic natural polymer is cationically modified polysaccharide, such as cationic starch or cationic nanofibrillar cellulose. 8. The method according to claim 1 , wherein the fibre suspension comprises filler.
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Frequently asked questions
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- What does patent US9828727B2 cover?
- The invention relates to a method for preparing aqueous furnish to be used in paper product manufacturing. In the method aqueous furnish is prepared by making a fiber suspension, and cationic natural polymer (S), alum (A) and anionic nanofibrillar cellulose (F) are added to the aqueous furnish in a short circulation of a paper or board machine.
- Who is the assignee on this patent?
- Upm Kymmene Corp
- What technology area does this patent fall under?
- Primary CPC classification D21H21/10. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Nov 28 2017 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).