COFFEE BAG VENT

1 . A vent for a package, comprising:

a multilayer laminate film comprising a vent having a first breach, a second breach, and a laser-formed channel extending therebetween, the length and cross-sectional area of the laser-formed channel configured to exhaust CO 2 at a rate greater than a counter-flow diffusion rate for oxygen or water vapor.

2 . The vent of claim 1 , further comprising wherein the vent has an OTR of between about 1.5 ml to about 0.01 ml per day.

3 . The vent of claim 2 , further comprising wherein a diameter of the laser-formed channel is between about 50 microns to about 200 microns.

4 . The vent of claim 3 , further comprising wherein the vent can exhaust up to about 500 ml of CO 2 at 1 PSI in around 24 hours.

5 . The vent of claim 3 , further comprising wherein a first layer of the multilayer laminate film is laser transmissive.

6 . The vent of claim 5 , further comprising wherein a second layer of the multilayer laminate film is laser absorptive.

7 . The vent of claim 6 , further comprising wherein a third layer of the multilayer laminate film is laser reflective.

8 . The vent of claim 6 , further comprising wherein the laser-formed channel is formed in the second layer.

9 . The vent of claim 8 , further comprising wherein the laser-formed channel is inflated and expanded beyond an original thickness of the second layer.

10 . The vent of claim 8 , further comprising wherein either of the first breach or the second breach comprises a laser formed breach.

11 . The vent of claim 8 , further comprising wherein either of the first breach or the second breach comprises a mechanically cut breach.

12 . The vent of claim 1 , further comprising wherein the multilayer laminate film is a package film, and the first breach is in communication with an interior of a package comprising the package film and the second breach is in communication with an exterior of the package.

13 . The vent of claim 1 , further comprising wherein the multilayer laminate film is a patch comprising an adhesive layer for adhesion to a package film exterior surface, and the first breach is configured for communication with an interior of a package comprising the package film and the second breach is configured for communication with an exterior of the package.

14 . The vent of claim 13 , further comprising a wetted sealing film over the second breach.

15 . The vent of claim 14 , further comprising wherein the vent has an OTR of less than 0.01 ml per day.

16 . The vent of claim 13 , further comprising wherein the multilayer laminate film patches are provided on a roll stock.

17 . The vent of claim 16 , further comprising wherein the vent is configured to be crushed when the roll stock is rolled-up and to subsequently inflate in size when the roll stock is unrolled.

18 . A vent for a package, comprising:

a multilayer laminate film comprising a vent having a first breach configured for communication with an interior of a package comprising the multilayer laminate film, a second breach configured for communication with an exterior of the package, and a laser-formed channel communicating therebetween, wherein a diameter of the laser-formed channel is between about 50 microns to about 200 microns.

19 . The vent of claim 18 , further comprising wherein the vent has an OTR of between about 1.5 ml to about 0.01 ml per day.

20 . The vent of claim 19 , further comprising wherein the vent can exhaust up to about 500 ml of CO 2 at 1 PSI in around 24 hours.