Net-based baffles for flexible intermediate bulk containers

Abstract

A flexible intermediate bulk container (FIBC) for transferring various type of materials, including industry-based granule materials, fine materials like sugar, flour, comprising baffles sewed to edge region of the FIBCs for preventing bulging formation on lateral surfaces thereof so defining an essential volume and subsidiary volume in the FIBC and said baffles having holes for promoting material transfer between the essential volume and subsidiary volume the development comprising said baffle ( 3 ) formed as a net structure having plurality of filaments ( 4 ), plurality of net passages ( 10 ) between these filaments ( 4 ) and connection elements ( 8 ) the filaments ( 4 ) are attached thereon.

13 . A flexible intermediate bulk container (FIBC) for transferring various types of granule materials, said container comprising walls and baffles for preventing bulging of said container walls, said baffles comprising first and second vertically extending elements, and a horizontally extending element connecting said first and second vertically extending elements, said elements being knitted together, and means for connecting said baffles between said walls of the container, wherein each of said elements comprises a filament.  
   
   
       14 . The container of  claim 13  wherein the space occupied by the horizontally extending element is about 3-20% of the rectangular area defined by said baffle, for each meter of baffle length.  
   
   
       15 . The container of  claim 13  wherein the space occupied by the horizontally extending element is about 7% of the rectangular area defined by said baffle, for each meter of baffle length.  
   
   
       16 . The container of  claim 13  wherein the thickness of the filament that comprises said horizontal element is within the range of 0.5-5 mm.  
   
   
       17 . The container of  claim 13  wherein the gram weight for each 10,000 meters of the filament that comprises said first vertically extending element is approximately 1900 dtex.  
   
   
       18 . The container of  claim 13  wherein the gram weight for each 10,000 meters of the filament that comprises said second vertically extending element is approximately 1100 dtex.  
   
   
       19 . The container of  claim 13  wherein the gram weight for each 10,000 meters of the filament that comprises said horizontally extending element is approximately 3000 dtex.  
   
   
       20 . A method for fabricating a baffle for preventing bulging of the walls of a flexible intermediate bulk container (FIBC) of the type used for transferring various types of granule materials, the baffle comprising first and second vertically extending elements, and a horizontally extending element connecting said first and second vertically extending elements, the method comprising the steps of forming the first vertically extending element from a filament, forming the second vertically extending element from a filament, forming the horizontal extending element from a filament and knitting the first vertically extending element, the second vertically extending element and the horizontally extending element together in the same production step.  
   
   
       21 . The method of  claim 20  wherein the step of knitting comprises knitting the elements together such that the space occupied by the horizontally extending element is about 3-20% of the rectangular area defined by the baffle, for each meter of baffle length.  
   
   
       22 . The method of  claim 20  wherein the step of knitting comprises the step of knitting the elements together such that the space occupied by the horizontally extending element is about 7% of the rectangular area defined by said baffle, for each meter of baffle length.  
   
   
       23 . The method of  claim 20  wherein the step of forming the horizontal element comprises the step of forming the horizontal element of a filament with a thickness within the range of 0.5-5 mm.  
   
   
       24 . The method of  claim 20  wherein the step of forming the first vertically extending element comprises the step of forming the first vertically extending element of a filament with a gram weight for each 10,000 meters of the filament of approximately 1900 dtex.  
   
   
       25 . The method of  claim 20  wherein the step of forming the second vertically extending element comprises the step of forming the second vertically extending element of a filament with a gram weight for each 10,000 meters of the filament of approximately 1100 dtex.  
   
   
       26 . The method of  claim 20  wherein the step of forming the horizontally extending element comprises the step of forming the horizontally extending element of a filament with a gram weight for each 10,000 meters of the filament of approximately 3000 dtex.