Packaging container with flared peripheral clearance

Abstract

A packaging container mainly includes a box having an open top and a first flange horizontally outward extended from a periphery of the open top, and a cover having a second flange horizontally outward extended from a periphery of the cover corresponding to the first flange. The first and the second flange are provided at corresponding positions with complementary recess and projection belts that fitly engage with each other to enhance connection of the cover to the box. Outer edges of the first and the second flange are bent downward and upward, respectively, to form a flared peripheral clearance between the cover and the box, allowing the cover to be easily removed from the open top of the box at the flared peripheral clearance.

1 . A packaging container with flared peripheral clearance, comprising a box having an open top and a first flange horizontally outward extended from a periphery of said open top, and a cover having a second flange horizontally outward extended from a periphery of said cover corresponding to said first flange; said packaging container being characterized in that said first and said second flange are provided at corresponding positions with complementary recess and projection belts to enhance connection of said cover to said box, and that outer edges of said first and said second flange are bent downward and upward, respectively, to form a flared peripheral clearance between said cover and said box when said cover is closed to said open top of said box, allowing said cover to be easily removed from said open top of said box at said flared peripheral clearance.  
   
   
       2 . The packaging container with flared peripheral clearance as claimed in  claim 1 , wherein said flared peripheral clearance continuously extends a whole periphery of said packaging container, allowing said cover to be easily removed from said open top of said box at any point on said flared peripheral clearance.  
   
   
       3 . The packaging container with flared peripheral clearance as claimed in  claim 1 , wherein said first flange on said box includes an inner belt immediately extended along said open top of said box, said recess belt located outside said inner belt, an outer belt located outside said recess belt, and said downward bent outer edge; and said second flange on said cover including an inner belt immediately extended along a periphery of said cover, said projection belt located outside said inner belt, an outer belt located outside said projection belt, and an upward bent outer edge.  
   
   
       4 . The packaging container with flared peripheral clearance as claimed in  claim 1 , wherein said first flange on said box includes an inner belt immediately extended along said open top of said box, said projection belt located outside said inner belt, an outer belt located outside said projection belt, and said downward bent outer edge; and said second flange on said cover including an inner belt immediately extended along a periphery of said cover, said recess belt located outside said inner belt, an outer belt located outside said recess belt, and an upward bent outer edge.  
   
   
       5 . The packaging container with flared peripheral clearance as claimed in  claim 1 , wherein said cover is provided at a predetermined position with a vent having a predetermined size, allowing thermally expanded air in said packaging container to discharge from said vent when said packaging container is heated in a microwave stove.