Package fof cooking foodstuffs having high-moisture content

Abstract

A package for cooking includes an inner ply and an outer ply laminated to the inner ply. The inner ply contact foodstuffs contained within the package. The inner ply is a paper-based product having a wet tensile strength property such that it will not deteriorate in the presence of high-moisture foods. The paper-based product also has a scorching temperature above the temperature of the foodstuffs when heated. The outer ply includes a polymer film.

1 . A package comprising:
 an inner ply that contacts foodstuffs contained within the package, the inner ply comprised of a paper-based product having a wet tensile strength property such that the paper-based product will not deteriorate in the presence of high-moisture foods and having a scorching temperature above the temperature of the foodstuffs when heated;   an outer ply disposed on the inner ply, the outer ply comprising a polymer film.   
   
   
       2 . The package of  claim 1 , wherein the paper has a wet strength property of from about 10% to about 60%. 
   
   
       3 . The package of  claim 1 , wherein the paper has a wet strength property of from about 20% to about 35%. 
   
   
       4 . The package of  claim 1 , further comprising a vent disposed for releasing pressure from within the package to the atmosphere. 
   
   
       5 . The package of  claim 4 , wherein the vent is a channel formed between the inner ply and the outer ply and being open to the atmosphere. 
   
   
       6 . The package according to  claim 5 , wherein the channel is formed by de-laminating a region between the inner ply and the outer ply. 
   
   
       7 . The package of  claim 4 , wherein the vent is opened when the pressure within the package reaches a predetermined pressure. 
   
   
       8 . The package of  claim 4 , wherein the vent comprises a seal that is selectively opened to relieve pressure within the package. 
   
   
       9 . The package of  claim 8 , wherein the seal comprises an adhesive that at least partially de-adheres in the presence of one or both of increased temperature and pressure and therefore opens the vent at a predetermined venting condition. 
   
   
       10 . The package of  claim 8 , wherein the seal is opened when the interior of the package reaches a predetermined pressure. 
   
   
       11 . The package of  claim 10 , wherein the seal comprises a flap disposed over an aperture formed through the inner layer and the outer layer. 
   
   
       12 . The package of  claim 1 , wherein the paper product is one of Kraft paper, bleached Kraft paper, parchment paper, greaseproof paper, and glassine paper. 
   
   
       13 . The package of  claim 1 , wherein at least one of the inner ply and the outer ply is coated with a material forming a barrier layer. 
   
   
       14 . The package of  claim 13 , further comprising an adhesive provided on one of the barrier layer and the outer ply, the adhesive being used for at least one of sealing the package, laminating the plies of the package, and forming a temporary seal in the package. 
   
   
       15 . The package of  claim 4 , wherein the vent comprises at least one aperture formed through the inner layer. 
   
   
       16 . The package of  claim 15 , wherein the vent further comprises a channel between the inner layer and the outer layer being open to the atmosphere and in communication with the at least one aperture, such that pressurized air exiting the package through the at least one aperture is exhausted from the package through the channel. 
   
   
       17 . The package of  claim 15 , wherein the at least one aperture comprises a plurality of micropores. 
   
   
       18 . The package of  claim 17 , wherein the micropores also are formed through the outer layer. 
   
   
       19 . The package of  claim 4 , wherein the vent comprises a selectively coverable aperture formed through the inner and outer plies of the package. 
   
   
       20 . A multi-layer package for use in cooking foodstuffs, the package comprising:
 an inner ply contacting the foodstuffs, the inner ply comprised of a paper-based product having a scorching temperature that is higher than a maximum temperature of the foodstuffs reached during cooking of the foodstuffs;   an outer surface facing the environment and comprising a polymer film; and   a vent disposed in the package for relieving pressure within the package during cooking.   
   
   
       21 . The package of  claim 20 , wherein the paper product comprising the inner ply has a wet tensile strength property such that the inner ply will not deteriorate in the presence of high-moisture foods. 
   
   
       22 . A package for cooking foodstuffs comprising:
 a single ply contacting the foodstuffs, the single ply comprised of a paper-based product having a scorching temperature that is higher than a maximum temperature of the foodstuffs reached during cooking of the foodstuffs; and   an adhesive sealing the single ply to form the package, the adhesive having a melting point at a temperature reached during cooking such that the seal is melted during cooking to vent the package.