Vacuum packing envelope for cooking

Abstract

The vacuum packing envelope for cooking which is characterized in that a sealing part ( 110 ) having a certain width is formed for vacuum packing food by heating and thermally melting a film, and a vapor discharge part ( 130 ) which is disposed at a portion of the sealing rim part ( 110 ) for automatically discharging vapor with the aid of an inner pressure when heating and cooking food, comprises an easy peel tape ( 120 ) which crosses, in a horizontal direction, the sealing rim part; and a vapor discharge part ( 130 ) which is formed in the sealing weak part ( 111 ) where the easy peel tape ( 120 ) and the sealing rim part ( 110 ) overlap with each other.

What is claimed is: 
     
         1 . A vacuum packing envelope for cooking which is characterized in that a sealing part ( 110 ) having a certain width is formed for vacuum packing food by heating and thermally melting a film, and a vapor discharge part ( 130 ) which is disposed at a portion of the sealing rim part ( 110 ) for automatically discharging vapor with the aid of an inner pressure when heating and cooking food, comprising:
 an easy peel tape ( 120 ) which crosses, in a horizontal direction, the sealing rim part; and   a vapor discharge part ( 130 ) which is formed in the sealing weak part ( 111 ) where the easy peel tape ( 120 ) and the sealing rim part ( 110 ) overlap with each other.   
     
     
         2 . The envelope of  claim 1 , wherein said easy peel tape ( 120 ) forms a multiplex sealing part ( 121 ) which is formed of at least one band. 
     
     
         3 . The envelope of  claim 1 , wherein said sealing weak part ( 111 ) comprises an expanding part which expands inwardly in the envelope. 
     
     
         4 . The envelope of  claim 3 , wherein a vapor discharge part ( 130 ) is formed only at a sealing weak part ( 111 ) which forms an expanding part. 
     
     
         5 . The envelope of  claim 1 , wherein said vapor discharge part ( 130 ) is formed in a porous shape. 
     
     
         6 . The envelope of  claim 1 , wherein said vapor discharge part ( 130 ) forms a passage for the sealing weak part ( 111 ) to pass through from the inner side to the outer side of the envelope. 
     
     
         7 . The envelope of  claim 6 , wherein said vapor discharge part ( 130 ) forms a passage from the sealing weak part ( 111 ) to pass through from the inner side of the outer side of the envelope, the outlet part of the passage being expanded to the region of the sealing rim part ( 110 ) which is out of the sealing weak part ( 111 ).