Rectangular food container with double sealing structure

Abstract

The invention relates to a rectangular food container with double sealing structure comprises: a rectangular container body having an upward opening, a periphery of the upward opening outward folded to from a lower U-shaped body and the lower U-shaped body having an inner side surface forming a first sealing groove and an outer side surface forming a second sealing groove; and a rectangular cover having a downward opening, a periphery of the downward opening having an upper U-shaped body for fitting to each other, the upper U-shaped body having an inner side surface forming a third sealing groove and an outer side surface forming a fourth sealing groove for forming a double sealing structure of the inner side and outer side surfaces of the upper U-shaped body and lower U-shaped body.

What is claimed is: 
     
         1 . A rectangular food container with double sealing structure, comprising:
 a rectangular container body having an upward opening, a periphery of the upward opening outward folded to from a lower U-shaped body and the lower U-shaped body having an inner side surface forming a first sealing groove and an outer side surface forming a second sealing groove; and   a rectangular cover corresponding to the rectangular container body having a downward opening, a periphery of the downward opening corresponding to the lower U-shaped body of the rectangular container body having an upper U-shaped body for fitting to each other, the upper U-shaped body having an inner side surface corresponding to the first sealing groove forming a third sealing groove and an outer side surface corresponding to the second sealing groove forming a fourth sealing groove for forming a double sealing structure of the inner side and outer side surfaces of the upper U-shaped body and lower U-shaped body.   
     
     
         2 . The rectangular food container with double sealing structure as claimed in  claim 1 , wherein the first sealing groove and third sealing groove and the second sealing groove and fourth sealing groove are respectively located at different height position of the inner side surface and the outer side surface. 
     
     
         3 . The rectangular food container with double sealing structure as claimed in  claim 2 , wherein the rectangular cover includes a first annular groove between a wall surface thereof and the upper U-shaped body and a second annular groove on a surface thereof. 
     
     
         4 . The rectangular food container with double sealing structure as claimed in  claim 3 , wherein the upper U-shaped body has a pull tab at a corner of an outer side thereof. 
     
     
         5 . The rectangular food container with double sealing structure as claimed in  claim 4 , wherein the upper U-shaped body of the rectangular cover includes a flange surface outwardly and horizontally extending from an outside bottom thereof. 
     
     
         6 . The rectangular food container with double sealing structure as claimed in  claim 1 , wherein the rectangular container body and rectangular cover include wave bodies on wall surfaces thereof.