Multiwall (or multi-wall) paper sacks or shipping sacks, are often used as shipping containers for bulk materials as fertilizer, animal feed, sand, dry chemicals, flour and cement. There are many different types of sack available.
There are two basic design of bags: open mouth bags and valve bags. Open mouth bag is a tube of paper plies with only one bottom end sealed by the paper sack producer. The bag is filled though the open mouth and then closed by stitching, adhesive, or tape. Valve sacks have both bottom ends closed and are filled through a valve.
Gusseted Bags are bags that have expandable sides or bottom, which permit more fill able space and when the bags are opened ideal for packing bulk items.
LDPE Gusseted Bags
Printed + Unprinted
Multiwall Paper Sacks
Open Mouth, Block Bottom, Valve