Paperboard-made food container

Abstract

A paperboard-made food container includes a base with four sidewalls and a V-shaped main ridge extends from an inner bottom of the base. A V-shaped first groove is defined in an outer bottom of the base and located corresponding to the main ridge. A plurality of elongate slots are defined through the bottom of the base and a V-shaped separation ridge is connected to the inner bottom to cover the slots. A plurality of second grooves are defined in the outer bottom of the base and located corresponding to the separation ridges. A cover is connected to one of the four sidewalls of the base. The bases can be conveniently overlapped with each other by engaging the main ridge with the first groove and engaging the separation ridges with the second grooves.

1 . A paperboard-made food container comprising: 
 a base ( 20 ) having four sidewalls ( 22 ) and a main ridge ( 23 ) extending from an inner bottom of the base ( 20 ), a first groove ( 230 ) defined in an outer bottom of the base ( 20 ) and located in correspondence with the main ridge ( 23 ), a plurality of elongate slots ( 24 ) defined through the bottom of the base ( 20 ) and communicating with two opposite sidewalls ( 22 ) perpendicular to the elongate slots ( 24 ) and the main ridge, and    a plurality of separation ridges ( 30 ) each including two sides plates which are connected at one lengthwise side, each side plate having a first connection plate ( 31 ) at an end thereof and a second connection plate ( 32 ) at the other lengthwise side, the first side plates ( 31 ) of each of the separation ridges ( 30 ) attached to an inside of the side wall ( 22 ) and the main ridge ( 23 ), the second connection plates ( 32 ) attached to the inner bottom of the base ( 20 ).    
   
   
       2 . The container as claimed in  claim 1 , wherein the elongate slots ( 24 ) communicate with a V-shaped opening ( 26 ) defined through the sidewalls ( 22 ) and the main ridge ( 23 ), a plurality of V-shaped second grooves ( 300 ) defined in the outer bottom of the base ( 20 ) and communicating with the V-shaped openings ( 26 ).  
   
   
       3 . The container as claimed in  claim 2 , wherein the separation ridges ( 23 ) are a V-shaped ridge which is sized to be engaged with the second groove ( 300 ).  
   
   
       4 . The container as claimed in  claim 1 , wherein the main ridge ( 23 ) is a V-shaped ridge which is sized to be engaged with the first groove ( 230 ).  
   
   
       5 . The container as claimed in  claim 1  further comprising a cover ( 10 ) connected to one of the four sidewalls ( 22 ) of the base ( 20 ).  
   
   
       6 . The container as claimed in  claim 5 , wherein the main ridge ( 23 ) is located to be parallel to the sidewall to which the cover ( 10 ) is connected.  
   
   
       7 . The container as claimed in  claim 5 , wherein the main ridge ( 23 ) is located to be perpendicular to the sidewall to which the cover ( 10 ) is connected.