Flexible carrier to be carried in the container

Abstract

A flexible carrier includes a body defining a closed volume and at least one filling opening for carrying liquid or liquid-based materials in the container. The section of the body includes a narrowed part at least in the middle part in the direction of the length of the body to reduce the pressure applied by the body to the side walls of the container.

What is claimed is: 
     
         1 . A flexible carrier, comprising a body defining a closed volume and at least one filling opening for carrying liquid or liquid-based materials in a container, wherein a section of the body comprises a narrowed part at least in a middle part in a direction of a length of the body to reduce a pressure applied by the body to side walls of the container. 
     
     
         2 . The flexible carrier according to  claim 1 , wherein a section of the narrowed part is at least 5% smaller than the section of the body. 
     
     
         3 . The flexible carrier according to  claim 1 , wherein the narrowed part is provided in a predetermined first length from the middle part towards two ends. 
     
     
         4 . The flexible carrier according to  claim 1 , wherein a first length of the narrowed part is greater than 5% of a total length of the body. 
     
     
         5 . The flexible carrier according to  claim 4 , wherein the first length of the narrowed part is equal to the total length of the body, and the body is provided in a form expanding from the middle part towards ends in the direction of the length of the body. 
     
     
         6 . The flexible carrier according to  claim 1 , wherein the body is obtained by connecting two plates provided with a narrowing width in a middle part of long sides of the two plates to each other through outer walls. 
     
     
         7 . The flexible carrier according to  claim 1 , wherein the flexible carrier comprises a corset, wherein the corset surrounds a circumference of the body to narrow the section of the body and is provided with a section smaller than the section of the body. 
     
     
         8 . The flexible carrier according to  claim 7 , wherein the corset is fixed on the body. 
     
     
         9 . The flexible carrier according to  claim 6 , wherein an end joint edge obtained by closing two ends of the body is positioned to extend upwards from a base of the container.