Oil resistant article
An oil resistant article is described that does not contain any fluorocarbon compounds. The oil resistant article includes a basesheet formed from pulp fibers. The basesheet is coated on at least one surface with an oil resistant coating. The basesheet is formed without having to use any highly refined fibers. Various chemical treatments are incorporated into the basesheet and the oil resistant coating is formed from particularly selected polymers that produces an oil resistant article having a relatively high permeability and excellent oil resistant properties.
1. An oil resistant article comprising:
a paper basesheet comprising pulp fibers, the basesheet having a basis weight of from about 18 gsm to about 80 gsm, the basesheet including a first side and a second and opposite side;
an oil resistant coating on at least one side of the basesheet, the oil resistant coating comprising a cellulose derivative, a polyvinyl alcohol polymer, a vegetable protein-based polymer or mixtures thereof; and
wherein the oil resistant article is free of fluorocarbon compounds, and wherein the oil resistant article has a Gurley permeability of less than about 50,000 s/100 mL and greater than about 3,000 s/100 mL.
2. An oil resistant article as defined in claim 1 , wherein the pulp fibers contained in the basesheet have a degree of refining of from about 85° SR or less and about 50° SR or more.
3. An oil resistant article as defined in claim 1 , wherein the basesheet contains hardwood fibers in an amount of about 60% by weight or more.
4. An oil resistant article as defined in claim 1 , wherein the oil resistant coating comprises a sodium salt of a carboxymethyl cellulose, the sodium salt of the carboxymethyl cellulose having a viscosity of less than about 800 cPs and greater than about 5 cPs.
5. An oil resistant article as defined in claim 1 , wherein the oil resistant coating comprises from about 0.01% to about 10% by weight of the oil resistant article.
6. An oil resistant article as defined in claim 1 , wherein the basesheet further comprises a binder.
7. An oil resistant article as defined in claim 6 , wherein the binder comprises a carboxymethyl cellulose, a starch or mixtures thereof.
8. An oil resistant article as defined in claim 6 , wherein the binder comprises a first carboxymethyl cellulose and the oil resistant coating comprises a second carboxymethyl cellulose, the first carboxymethyl cellulose being different than the second carboxymethyl cellulose.
9. An oil resistant article as defined in claim 1 , wherein the basesheet further comprises a sizing agent.
10. An oil resistant article as defined in claim 9 , wherein the sizing agent comprises an alkyl ketene dimer, the alkyl ketene dimer being present in the basesheet in an amount from about 0.5% to about 4% by weight.
11. An oil resistant article as defined in claim 1 , wherein the basesheet has an uncoated, inherent permeability of from about 1,000 s/100 mL to about 3,000 s/100 mL.
12. An oil resistant article as defined in claim 1 , wherein the oil resistant article includes an oil resistant coating on the first side of the basesheet and an oil resistant coating on the second side of the basesheet.
13. An oil resistant article as defined in claim 1 , wherein the basesheet does not contain filler particles.
14. An oil resistant article as defined in claim 1 , wherein the oil resistant coating does not contain filler particles.
15. An oil resistant article as defined in claim 1 , wherein the article comprises a single coated layer made only from the basesheet and one or more oil resistant coatings.
16. An oil resistant article as defined in claim 1 , wherein the article displays a Kit oil rating of greater than about 3 and less than about 12.
17. An oil resistant article as defined in claim 1 , wherein the oil resistant article is silicone free.
18. An oil resistant article as defined in claim 1 , wherein the basesheet has a basis weight of from about 30 gsm to about 50 gsm.
19. An oil resistant article as defined in claim 1 , wherein the article has a Gurley permeability of from about 5,000 s/100 mL to about 15,000 s/100 mL.
20. An oil resistant article as defined in claim 1 , wherein the pulp fibers contained in the basesheet comprise at least about 95% by weight hardwood fibers.
21. An oil resistant article as defined in claim 1 , wherein the oil resistant article has been calendered.
22. An oil resistant article comprising:
a paper basesheet comprising pulp fibers, the basesheet having a basis weight of from about 18 gsm to about 80 gsm, the basesheet including a first side and a second and opposite side;
an oil resistant coating on at least one side of the basesheet, the oil resistant coating comprising a cellulose derivative, a polyvinyl alcohol polymer, a starch, a vegetable protein-based polymer or mixtures thereof;
wherein the oil resistant article is free of fluorocarbon compounds, and wherein the oil resistant article has a Gurley permeability of less than about 50,000 s/100 mL and greater than about 3,000 s/100 mL; and
wherein the basesheet does not contain any filler particles and wherein the pulp fibers contained in the basesheet have a degree of refining of from about 85° SR or less and about 50° SR or more.