A packaging unit

Abstract

A packaging unit ( 100 ) includes an outer container ( 104 ) and an inner container ( 102 ) disposed inside the outer container. The outer container has a bottom portion ( 150 ) and a sidewall ( 152 ) extending upwardly from the bottom portion around a longitudinal axis ( 154 ). The sidewall has an upper edge ( 160 ) defining an access opening ( 162 ) to the container. Further, the inner container includes a bottom section ( 130 ) having a plurality of openings ( 140 ) that facilitate an egress of liquid from the inner container. Furthermore, the bottom portion is adapted to be displaced between a first position and a second position. Also, the inner container moves upwardly towards the access opening in response to a displacement of the bottom portion from the first position to the second position.

1 . A packaging unit, comprises:
 an outer container including:
 a bottom portion; and 
 a sidewall extending upwardly from the bottom portion around a longitudinal axis, the sidewall having an upper edge defining an access opening to the container; and 
   an inner container disposed inside the outer container and including a bottom section having at least one opening facilitating an egress of liquid from the inner container,   wherein the bottom portion is adapted to be displaced between a first position and a second position, wherein the inner container moves upwardly towards the access opening in response to a displacement of the bottom portion from the first position to the second position.   
     
     
         2 . The packaging unit of  claim 1 , wherein the bottom portion is arranged as a bi-stable element, wherein a force is applied on the bottom portion to move the bottom portion between the first position and the second position. 
     
     
         3 . The packaging unit of  claim 1 , wherein the bottom portion includes an engagement structure and the inner container includes a cooperating structure, wherein the engagement structure engages with the cooperating structure to prevent a rotation of the inner container inside the outer container. 
     
     
         4 . The packaging unit of  claim 3 , wherein the engagement structure is adapted to engage with the cooperating structure when the bottom portion is disposed at the second position. 
     
     
         5 . The packaging unit of  claim 3 , wherein the engagement structure is arranged as a plurality of rib elements arrayed circularly around the longitudinal axis of the outer container, each rib element protrudes upwardly from a surface of the bottom portion. 
     
     
         6 . The packaging unit of  claim 3 , wherein the cooperating structure is arranged as a plurality of fin elements arrayed circularly around a longitudinal axis of the inner container, each fin element protrudes downwardly from a bottom surface of the inner container. 
     
     
         7 . The packaging unit of  claim 1 , wherein
 the outer container includes a step defined along an inner surface of the outer container and disposed proximal to the access opening, and   the inner container is adapted to abut the step when the bottom portion is disposed in the first position.   
     
     
         8 . The packaging unit of  claim 1 , wherein the bottom portion includes:
 a flexible portion configured to be displaced between a first position and a second position, wherein the inner container moves upwardly towards the access opening in response to a displacement of the flexible portion from the first position to the second position; and   a rim portion extending downwardly from the flexible portion and connecting the flexible portion to the sidewall.   
     
     
         9 . The packaging unit of  claim 8 , wherein flexible portion includes an upwardly facing concave shape in the first position, and an upwardly facing convex shape in the second position. 
     
     
         10 . The packaging unit of  claim 8 , wherein the flexible portion includes a central flat portion and a curved peripheral portion connecting the central flat portion to the rim portion.