Sift proof seams

We can use siftproof seams in order to prevent any leaks. During the manufacturing process, the sewing machine needle makes small holes in the fabric. This could cause a leak if the FIBC were filled with fine powder material, such as cocoa, milk powders, starch, lead powders, iron powders or resins. A sift proof seam is a downy material that is attached to the seams and prevents leaks.


  • 3 – 5 grams per metre
  • Single-sided (on one side of the fabric)
  • Double-sided (on both sides of the fabric)
  • Triple (both sides + in between)
  • Triple with felt

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