Flour sack

Bags or sacks for flour range in size and material, from large bulk bags, in cotton or woven polypropylene, to smaller consumer packaging, often made of paper.

These printed cotton bags were sometimes viewed as collectables; other times the flour sack fabric was repurposed into a variety of household items.

Some include a layer of plastic film for barrier properties and insect control.

Packaging engineers and food scientists need to understand the properties of the particular flour, intended handling and logistics systems, and desired shelf life.

[5][6] When insect infestation is noted, one method of stopping further growth is to freeze the sacks of flour for several days.

open multi-wall paper sack of flour
40 kg. multi-wall paper sacks of flour
Paper sack of flour. 5 pound, 2.27 kg
Testing the ability of packages to resist insect infestation [ 4 ]
Reuel Colt Gridley became famous in the United States in 1864 by repeatedly selling a sack of flour to raise money for wounded U.S. Civil War veterans.