Dry fluff pulp sheet additive

Patent metadata

Field	Value
Publication number	US-10415190-B2
Application number	US-201615138567-A
Country	US
Kind code	B2
Filing date	Apr 26, 2016
Priority date	Aug 5, 2009
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

A process is provided for making a fluff pulp sheet, comprising forming a web comprising fluff pulp fibers; and applying at least one debonder surfactant to 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 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 process for making a fluff pulp sheet, comprising:
forming a web comprising fluff pulp fibers, and
spraying at least one debonder surfactant to the web prior to a dryer section and after a headbox of a papermaking machine, to make the fluff pulp sheet;
wherein the fluff pulp sheet a fiberization energy of <145 kJ/kg and a Mullen of ≥90 psi, and
wherein the debonder surfactant is one or more selected from the group consisting of linear or branched monoalkyl amine, linear or branched dialkyl amine, linear or branched tertiary alkyl amine, linear or branched quaternary alkyl amine, fatty acid amide, fatty acid amide quaternary ammonium salt, dialkyl dimethyl quaternary ammonium salt, dialkylimidazolinium quaternary ammonium salt, dialkyl ester quaternary ammonium salt, triethanolamine-ditallow fatty acid, dialkyl amide of fatty acid, dialkyl amide of fatty acid, compound having CAS Registry No. 68155-01-1, compound having CAS Registry No. 26316-40-5, and a combination thereof.

2. The process of claim 1 , wherein the forming comprises one or more of contacting a fluff pulp mixture comprising fluff pulp fibers and water with a table in the papermaking machine, removing at least a portion of water from a fluff pulp mixture comprising fluff pulp fibers and water with a suction box under a table in a papermaking machine, at least partially drying a fluff pulp mixture comprising fluff pulp fibers and water in a flotation dryer, heating a fluff pulp mixture comprising fluff pulp fibers and water, heating the debonder surfactant, or a combination thereof.

3. The process of claim 1 , wherein the spraying is carried out using one or more formation showers over a table in the papermaking machine.

4. The process of claim 1 , further comprising drying the web in a dryer, to form a dried web.

5. The process of claim 1 , wherein the web has a moisture content of about 6.3%.

6. The process of claim 1 , wherein the web has a basis weight of 100 to 1100 gsm.

7. The process of claim 1 , wherein the web further comprises water and optionally one or more second debonder surfactant, pH adjusting agent, whitener, colorant, pigment, optical brightening agent, wetting agent, binder, bleaching agent, trivalent cationic metal, alum, other additive, or a combination thereof.

8. The process of claim 1 , wherein the web comprises a solids content of >1% by weight.

9. The process of claim 1 , wherein the debonder surfactant is neat, in combination with one or more second debonder surfactant, in solution, or combination thereof.

10. The process of claim 1 , wherein the debonder surfactant is in the form of a composition further comprising water and optionally one or more pH adjusting agent, whitener, colorant, pigment, optical brightening agent, wetting agent, binder, bleaching agent, trivalent cationic metal, alum, other additive, or a combination thereof.

11. The process of claim 1 , further comprising fiberizing or shredding the fluff pulp sheet.

12. The process of claim 11 , wherein the fiberizing or shredding are carried out in a hammermill.

13. The process of claim 1 , further comprising incorporating the fluff pulp sheet into one or more of 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.

14. A fluff pulp sheet, comprising:
a web comprising fluff pulp fibers;
at least one debonder surfactant selected from the group consisting of linear or branched monoalkyl amine, linear or branched dialkyl amine, linear or branched tertiary alkyl amine, linear or branched quaternary alkyl amine, fatty acid amide, fatty acid amide quaternary ammonium salt, dialkyl dimethyl quaternary ammonium salt, dialkylimidazolinium quaternary ammonium salt, dialkyl ester quaternary ammonium salt, triethanolamine-ditallow fatty acid, dialkyl amide of fatty acid, dialkyl amide of fatty acid, compound having CAS Registry No. 68155-01-1, compound having CAS Registry No. 26316-40-5, and a combination thereof;
a fiberization energy of <145 kJ/kg; and
a Mullen of ≥90 psi.

15. The sheet of claim 14 , further comprising a SCAN-C 33:80 adsorption time of <4.0 s.

16. The sheet of claim 14 , further comprising on screen fractionation a % Good of ≥50%.

17. The sheet of claim 14 , further comprising on screen fractionation a % Fines of ≤40%.

18. The sheet of claim 14 , further comprising on screen fractionation a % Pieces of ≤30%.

19. The sheet of claim 14 , wherein the debonder surfactant is present in an amount of ≥1 lb per ton of the fluff pulp fibers.

20. The sheet of claim 14 , further comprising a moisture content of about 6.3%.

21. The sheet of claim 14 , further comprising a density of 0.5 to 0.75 g/cc.

22. The sheet of claim 14 , further comprising a caliper of 40 to 70 mm.

23. The sheet of claim 14 , further comprising a finished basis weight of 100-1100 gsm.

24. 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 14 .

Assignees

• Int Paper Co

Inventors

• Jiang Jianer
• Sealey James E

Classifications

• D21H21/22

  Agents rendering paper porous, absorbent or bulky · CPC title

• D21H17/66

  Salts, e.g. alums · CPC title

• D21H17/63

  Inorganic compounds · CPC title

• D21H17/07

  Nitrogen-containing compounds · CPC title

• D21H11/16

  modified by a particular after-treatment · CPC title