BALE BOND' Bale Bond is a type of TWINE used in the agricultural industry to bind hay or straw into bales. It is made from polypropylene, which is a strong and durable material that can withstand the elements. Bale Bond is often used in the production of animal feed, as it helps to keep the hay or straw together and makes it easier to transport. The TWINE is also used for other purposes such as tying up plants and securing items in storage.