Composition containing a cationic trivalent metal and debonder and methods of making and using the same to enhance fluff pulp quality

Patent metadata

Field	Value
Publication number	US-9260820-B2
Application number	US-201314136515-A
Country	US
Kind code	B2
Filing date	Dec 20, 2013
Priority date	Aug 5, 2009
Publication date	Feb 16, 2016
Grant date	Feb 16, 2016

Abstract

A process is provided for making a fluff pulp sheet, comprising contacting at least one cationic trivalent metal, salt thereof, or combination thereof with a composition comprising fluff pulp fibers and water at a first pH, to form a first mixture; contacting at least one debonder surfactant with the first mixture and raising the pH to a second pH, which is higher than the first pH, to form a fluff pulp mixture; forming a web from the fluff pulp mixture; and drying the web, to make the fluff pulp sheet. A fluff pulp sheet is also provided, comprising a web comprising fluff pulp fibers; at least one cationic trivalent metal, salt thereof, or combination thereof; at least one debonder surfactant; and a fiberization energy of <145 kJ/kg. Products and uses of the fluff pulp sheet are also provided.

First claim

What is claimed is:

1. A fluff pulp sheet, comprising:
a web comprising fluff pulp fibers;
at least one cationic trivalent metal, salt thereof, or combination thereof;
at least one debonder surfactant;
a fiberization energy of <145 kJ/kg; and
a caliper of 40 to 70 mm.

2. The sheet of claim 1 , further comprising SCAN-C 33:80 adsorption time of <4.0 s.

3. The sheet of claim 1 , further comprising on screen fractionation a % Good of ≧50% according to the screen fractionation of shredded fluff pulp test described herein.

4. The sheet of claim 1 , further comprising on screen fractionation a % Fines of ≦40% according to the screen fractionation of shredded fluff pulp test described herein.

5. The sheet of claim 1 , further comprising on screen fractionation a % Pieces of ≦30% according to the screen fractionation of shredded fluff pulp test described herein.

6. The sheet of claim 1 , further comprising a Mullen of ≧90 psi.

7. The sheet of claim 1 , wherein the debonder surfactant is present in an amount of ≧1 lb per ton of the fluff pulp fibers.

8. The sheet of claim 1 , wherein the cationic trivalent metal, salt thereof, or combination thereof is present in an amount of ≧1 lb per ton of fluff pulp fibers.

9. The sheet of claim 1 , wherein the cationic trivalent metal is present in an amount ≧150 ppm.

10. The sheet of claim 1 , further comprising a moisture content of about 6.3%.

11. The sheet of claim 1 , further comprising a density of from 0.5 to 0.75 gee.

12. The sheet of claim 1 , further comprising a finished basis weight of from 100 to 1100 gsm.

13. An adsorbent product, paper product, personal care product, medical product, insulating product, construction product, structural material, cement, food product, veterinary product, packaging product, diaper, tampon, sanitary napkin, gauze, bandage, fire retardant, or a combination thereof, comprising the sheet of claim 1 .

Assignees

• Int Paper Co

Inventors

• Sealey James E
• Hevenor Michael

Classifications

• D21H21/22

  Agents rendering paper porous, absorbent or bulky · CPC title

• D21H11/18

  Highly hydrated, swollen or fibrillatable fibres · CPC title

• D21H17/07

  Nitrogen-containing compounds · CPC title

• D21H17/03

  Non-macromolecular organic compounds · CPC title

• D21H23/76

  characterised by choice of auxiliary compounds which are added separately from at least one other compound, e.g. to improve the incorporation of the latter or to obtain an enhanced combined effect (D21H17/18, D21H17/70, D21H23/10 take precedence) · CPC title