Single ply paper product, method for manufacturing, and article
View Patent ↗In an embodiment, the invention is a single ply paper product comprising a paper substrate having a first surface and a second surface and comprising a web of fibers sufficiently refined to have a Canadian Standard Freeness value of greater than about 100 cm 3 according to TAPPI standard test T 227, and having a weight of between about 20 lbs./3,000 ft. 2 and about 45 lbs./3,000 ft. 2 ; and a fluorochemical in an amount of at least 800 parts per million. In another embodiment, the invention is a method for processing a single ply paper product comprising the steps of folding a single ply paper product into a container. Processing of the single ply paper product includes at least one of folding, creasing, applying adhesive, applying a susceptor patch, and heat sealing. In another embodiment, the invention is an article comprising a single ply paper product and a charge of oil and popcorn.
1. A paper product, comprising:
(a) a paper substrate comprising a web of fibers sufficiently refined to have a Canadian standard freeness value of greater than about 100 cm 3 according to TAPPI standard test T 227, and having a weight of about 20 lbs./3000 ft. 2 to about 45 lbs./3000 ft. 2 ;
(b) a sufficient amount of fluorochemical to provide grease hold out of less than 2.00% according to a crease testing; and
(c) a film covering at least a portion of the web of fibers, wherein the film includes a viscosity modifier in an amount sufficient to render the film non-adhesive and enhance grease hold out in the portion of the web of fibers covered by the film.
2. A paper product according to claim 1 , wherein the web of fibers comprises cellulose fiber from chemical pulped wood comprising at least one of coniferous and deciduous trees.
3. A paper product according to claim 1 , wherein the web of fibers comprises cellulose fiber from chemical pulped wood comprising at least one of hardwood and softwood.
4. A paper product according to claim 1 , wherein the web of fibers comprises bleached cellulose fiber.
5. A paper product according to claim 1 , wherein the web of fibers has a Canadian Standard Freeness of about 100 cm 3 to about 400 cm 3 .
6. A paper product according to claim 1 , wherein the web of fibers has a weight of 20 lbs./3,000 ft. 2 to 45 lbs./3,000 ft. 2 .
7. A paper product according to claim 1 , wherein the fluorochemical comprises a perfluorinated surfactant and the fluorochemical is applied as a part of wet-end chemistry.
8. A paper product according to claim 1 , wherein the paper product resists turpentine according to TAPPI test T 454 om-94 for longer than 180 minutes.
9. A paper product according to claim 8 , wherein the paper product has less than 0.25% oil pass-through according to crease testing.
10. A paper product according to claim 1 , wherein the fluorochemical is present in an amount of less than about 2000 ppm.
11. A paper product according to claim 1 , wherein the fluorochemical is provided as a result of size-press chemistry.
12. A paper product according to claim 1 , wherein the web of fibers has a Canadian standard freeness value of about 150 cm 3 to about 350 cm 3 .
13. A paper product according to claim 1 , wherein the web of fibers has a Canadian standard freeness value of about 200 cm 3 to about 300 cm 3 .
14. A paper product according to claim 1 , wherein the viscosity modifier comprises sodium alginate and at least one selected from the group consisting of sodium carboxymethyl cellulose, hydroxylethyl cellulose, poly sodium acrylate, guar gum, gum arabic and xanthan gum.