Microwavable bags for use with liquid oil and related methods
View Patent ↗Microwavable bags can include one or more seals formed by a cold seal adhesive. The one or more seals can prevent egress of liquid oil from the bag.
1. A bag comprising:
a body material comprising a paper ply, the body material defining a tube having a first end and a second end, the tube comprising a front wall, a back wall, a first side wall joined to each of the front and back walls, and a second side wall joined to each of the front and back walls, wherein the front wall, the back wall, and the first and second side walls cooperate to define an interior cavity, wherein the first side wall includes a front panel and a back panel that meet at a first crease, and wherein the first crease is positioned between the front wall and the back wall such that a first channel is at least partially defined by the front wall, the back wall, and the first crease; and
a seam that extends along an entirety of the first end of the tube, wherein the seam seals the first end of the tube to prevent liquid oil from exiting the interior of the cavity of the tube via the first end of the tube, wherein the seam is sealed along a full length thereof via only a first cold seal adhesive, and wherein the first cold seal adhesive obstructs the first channel sufficiently to prevent liquid oil from exiting the interior cavity of the tube via the first channel.
2. The bag of claim 1 , further comprising a second cold seal adhesive extending along an entirety of the second end of the tube, wherein the second cold seal adhesive is in contact with each of the front wall, the back wall, and the two side walls, and wherein a seal formed by the second cold seal adhesive obstructs an additional channel at the second end of the tube sufficiently to prevent liquid oil from exiting the interior cavity of the tube via the second end of the tube.
3. The bag of claim 2 , wherein the first and second cold seal adhesives have the same composition.
4. The bag of claim 1 , wherein the second side wall includes a front panel and a back panel that meet at a second crease, wherein the second crease is positioned between the front wall and the back wall such that a second channel is at least partially defined by the front wall, the back wall, and the second crease, and wherein the first cold seal adhesive extends between the first channel and the second channel and obstructs the second channel.
5. The bag of claim 1 , wherein the first cold seal adhesive is configured to seal the first end of the tube upon contact of separate portions of the first cold seal adhesive with each other and application of a pressure within a range of from about 40 psi to about 80 psi.
6. The bag of claim 5 , wherein the first cold seal adhesive is configured to seal the first end of the tube when elevated in temperature during application of said pressure, and wherein the cold seal adhesive is heated at a temperature within a range of from about 100 degrees Fahrenheit to about 250 degrees Farenheit.
7. The bag of claim 1 , wherein the body material further comprises a grease-resistant coating facing the interior cavity.
8. A microwavable popcorn bag comprising:
a body material comprising a paper ply, the body material defining a tube having a first end and a second end, the tube comprising a front wall, a back wall, a first side wall joined to each of the front and back walls, and a second side wall joined to each of the front and back walls, wherein the front wall, the back wall, and the first and second side walls cooperate to define an interior cavity, wherein the first side wall includes a front panel and a back panel that meet at a first crease, wherein the first crease is positioned between the front wall and the back wall such that a first channel is at least partially defined by the front wall, the back wall, and the first crease, wherein the second side wall includes a front panel and a back panel that meet at a second crease, and wherein the second crease is positioned between the front wall and the back wall such that a second channel is at least partially defined by the front wall, the back wall, and the second crease;
a charge of unpopped popcorn;
a fat component configured to be in a liquid state when at a temperature that is within a range of from about 60 degrees to about 79 degrees Fahrenheit; and
a seam that extends along an entirety of the first end of the tube, wherein the seam seals the first end of the tube to prevent liquid oil from exiting the interior of the cavity of the tube via the first end of the tube, wherein the seam comprises a first cold seal adhesive that extends between the first crease and the second crease, and wherein the first cold seal adhesive obstructs the first and second channels sufficiently to prevent liquid oil from exiting the interior cavity of the tube via the first and second channels.
9. The bag of claim 8 , wherein the first and second creases are positioned between the front wall and the back wall such that two additional channels are at least partially defined by the front wall, the back wall, and the first and second creases, respectively, the bag further comprising a second cold seal adhesive forming a seal at the second end of the tube that extends between the first and second creases, wherein the second cold seal adhesive obstructs the two additional channels such that the seal at the second end of the tube is configured to prevent liquid oil from exiting the interior cavity of the tube via the second end of the tube.
10. The bag of claim 9 , wherein the first and second cold seal adhesives have the same composition.
11. The bag of claim 8 , wherein the body material comprises a second paper ply laminated to the first paper ply.
12. The bag of claim 8 , wherein the fat component is substantially free of trans fat.
13. A method of forming a bag, the method comprising:
providing a body material comprising a paper ply;
applying a cold seal adhesive to the body material continuously along a full edge of the body material;
forming a tube from the body material, the tube having a front wall, a back wall, a first side wall joined to each of the front and back walls, and a second side wall joined to each of the front and back walls;
folding the first side wall to form a crease; and
pressing separate portions of the cold seal adhesive to each other at a first end of the tube so as to form a seal in which the crease is between the front and back walls and the cold seal adhesive obstructs a channel that is at least partially defined by the front wall, the back wall, and the crease sufficiently to prevent liquid oil from passing through the channel.
14. The method of claim 13 , further comprising inserting a charge of unpopped popcorn and a fat component into the tube, wherein the fat component is configured to be in a non-solid state when at a temperature that is less than about 75 degrees Fahrenheit.
15. The method of claim 14 , wherein the fat component is substantially free of trans fat.
16. The method of claim 14 , further comprising sealing a second end of the tube via an additional quantity of the cold seal adhesive, wherein the second end of the tube remains sealed thereafter due only to the additional quantity of the cold seal adhesive.
17. The method of claim 13 , wherein said pressing comprises applying a pressure within a range of from about 40 psi to about 80 psi.
18. The method of claim 17 , wherein said pressing comprises applying pressure for a dwell time of no more than about 2 seconds.
19. The method of claim 17 , further comprising heating the cold seal adhesive at a temperature of no less than about 100 degrees Fahrenheit to form said seal.
20. The method of claim 13 , wherein the seal is formed of only the cold seal adhesive.
21. The bag of claim 1 , further comprising an additional adhesive at an exterior surface of the first side wall that connects the front panel to the back panel, and wherein the additional adhesive is at the same longitudinal position as the seam.
22. The bag of claim 8 , further comprising an additional adhesive at an exterior surface of the first side wall that connects the front panel to the back panel, and wherein the additional adhesive is at the same longitudinal position as the seam.