Are woven polypropylene bags waterproof?
Tightly woven polypropylene is highly water repellent and weatherproof. However, because it is breathable, moisture from the air can still enter unless an additional coating or waterproof repellent is applied. Fully waterproof and washable coatings can be applied to either the inside or the outside of the material.
Advantages:
鈼?Very affordable, Lower cost
鈼?Food contact compliance
鈼?Flexible and high strength, persistent durability
鈼?Can be printed on both sides.
鈼?Can be stored in an open area due to UV-stability
http://www.nansupacks.com/pp-w....oven-sack/fertilizer
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