Anti-microbial tissue paper and process to manufacture same
An antimicrobial paper includes a paper web having a grammage between 10 and 60 grams per square meter, a cationizing agent in a concentration ranging between 0.05 wt % and 5 wt %, an antimicrobial agent in a concentration ranging between 0.01 wt % and 3 wt %, the antimicrobial agent and the cationizing agent being added on the paper web having a consistency above 15 wt %, the antimicrobial paper having an antimicrobial agent release of above about 0.01 wt % when wetted.
1. A dry antimicrobial wiping paper comprising a paper web having a grammage between 10 and 60 grams per square meter, a cationizing agent in a concentration ranging between 0.05 wt % and 5 wt % and sufficient to at least one of partially neutralize, neutralize and cationize the paper web having a paper web consistency above about 15 wt %, a water-soluble antimicrobial agent in a concentration ranging between 0.01 wt % and 3 wt %, wherein a portion of the antimicrobial agent is released when the antimicrobial wiping paper is wetted by wiping a wet surface.
2. The dry antimicrobial wiping paper as claimed in claim 1 , wherein the antimicrobial wiping paper has an antimicrobial agent release of above about 0.01 wt % when wetted by wiping the wet surface.
3. The dry antimicrobial wiping paper as claimed in claim 1 , wherein the antimicrobial agent release is between about 0.05 wt % and about 3 wt % when wetted by wiping the wet surface.
4. The dry antimicrobial wiping paper as claimed in claim 1 , wherein the antimicrobial agent comprises a cationic surfactant and the antimicrobial wiping paper has a cationic charge.
5. The dry antimicrobial wiping paper as claimed in claim 1 , wherein the antimicrobial agent comprises at least one amine salt.
6. The dry antimicrobial wiping paper as claimed in claim 1 , wherein the antimicrobial agent comprises at least one quaternary ammonium.
7. The dry antimicrobial wiping paper as claimed in claim 1 , wherein the cationizing agent is in a concentration below 2.5 wt %, has a charge density above about 2 eq/kg and has a molecular weight below 1000 kDa.
8. The dry antimicrobial wiping paper as claimed in claim 7 , wherein the canonizing agent has a charge density above about 5 eq/kg.
9. The dry antimicrobial wiping paper as claimed in claim 1 , wherein the cationizing agent comprises an organic coagulant.
10. The dry antimicrobial wiping paper as claimed in claim 1 , wherein the cationizing agent is at least one of a polyamine, a polyDADMAC, a PEI, a PAE, a PAAE, and a PVAm.
11. The dry antimicrobial wiping paper as claimed in claim 1 , wherein the paper web has a thickness ranging between 125 and 1000 micrometers.
12. The dry antimicrobial wiping paper as claimed in claim 1 , wherein the paper web comprises one to five superposed paper plies.
13. The dry antimicrobial wiping paper as claimed in claim 1 , wherein the paper web consistency is between 75 wt % and 98 wt % when the cationizing agent and the antimicrobial agent are added to the paper web.
14. The dry antimicrobial wiping paper as claimed in claim 1 , wherein the paper web consistency is between 20 wt % and 50 wt % when the cationizing agent and the antimicrobial agent are added to the paper web.
15. A process for manufacturing a dry antimicrobial wiping paper as claimed in claim 1 , comprising:
obtaining the paper web;
applying the cationizing agent and the water-soluble antimicrobial agent to the paper web; and
drying the paper web including the cationizing agent and the microbial agent to increase the paper web consistency above 92 wt %,
wherein a portion of the antimicrobial agent is released when the antimicrobial wiping paper is wetted by wiping a wet surface.
16. A process as claimed in claim 15 , wherein the antimicrobial wiping paper has an antimicrobial agent release of above about 0.01 wt % when wetted by wiping the wet surface.
17. A process as claimed in claim 15 , wherein the antimicrobial agent is a cationic surfactant and the antimicrobial wiping paper has a cationic charge.
18. A process as claimed in claim 15 , wherein the cationizing agent is in a concentration below 2.5 wt %, has a charge density above about 2 eq/kg, and has a molecular weight below 1000 kDa.
19. A process as claimed in claim 15 , wherein the paper web has a thickness ranging between 125 and 1000 micrometers.
20. A process as claimed claim 15 , wherein the cationizing agent and the antimicrobial agent are applied to the paper web on a paper machine at an end of a forming section or following a Yankee dryer and before at least one afterdryer.
21. A process as claimed in claim 15 , wherein said applying further comprises spraying the cationizing agent and the antimicrobial agent to the paper web.
22. A process as claimed in claim 15 , further comprising applying the cationizing agent and the antimicrobial agent to the paper web when the paper web consistency is between 75 wt % and 98 wt %.
23. A process as claimed in claim 15 , further comprising applying the cationizing agent and the antimicrobial agent to the paper web when the paper web consistency is between 20 wt % and 50 wt %.
24. A dry antimicrobial wiping paper comprising a paper web including a cationizing agent in a concentration ranging between 0.05 wt % and 5 wt % and sufficient to at least one of partially neutralize, neutralize and cationize the paper web, a water soluble antimicrobial agent in a concentration ranging between 0.01 wt % and 3 wt % and having an antimicrobial agent release rate of above about 0.01 wt % when wetted by wiping a wet surface.
25. The dry antimicrobial wiping paper as claimed in claim 24 , the antimicrobial agent and the cationizing agent being added to the paper web having a paper web consistency above 15 wt %.
26. The dry antimicrobial wiping paper as claimed in claim 24 , wherein the paper web has a grammage between 10 and 60 grams per square meter.
27. The dry antimicrobial wiping paper as claimed in claim 24 , wherein the antimicrobial wiping paper has an antimicrobial agent release of above about 0.05 wt % when wetted by wiping the wet surface.
28. The dry antimicrobial wiping paper as claimed in claim 24 , wherein the antimicrobial agent is a cationic surfactant and the antimicrobial wiping paper has a cationic charge.
29. The dry antimicrobial wiping paper as claimed in claim 24 , wherein the cationizing agent is in a concentration below 2.5 wt %, has a charge density above about 2 eq/kg, and has a molecular weight below 1000 kDa.
30. The dry antimicrobial wiping paper as claimed in claim 24 , wherein the cationizing agent is at least one of a polyamine, a polyDADMAC, a PEI, a PAE, a PAAE, and a PVAm.
31. The dry antimicrobial wiping paper as claimed in claim 24 , wherein the paper web has a thickness ranging between 125 and 1000 micrometers.
32. The dry antimicrobial wiping paper as claimed in claim 1 , wherein the paper web consistency is above 15 wt % when the antimicrobial agent and the cationizing agent are added to the paper web.
33. A process as claimed in claim 15 , wherein the paper web consistency is above 15 wt % when applying the cationizing agent and the antimicrobial agent.